CN114604765A

CN114604765A - Intelligent tower crane material positioning auxiliary device and method based on Internet of things communication

Info

Publication number: CN114604765A
Application number: CN202210077262.2A
Authority: CN
Inventors: 陈德木; 蒋云; 赵晓东; 陆建江; 陈曦
Original assignee: Hangzhou Dajie Intelligent Transmission Technology Co Ltd
Current assignee: Hangzhou Dajie Intelligent Transmission Technology Co Ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-06-10
Anticipated expiration: 2042-01-24
Also published as: CN114604765B

Abstract

The application provides an intelligent tower crane material positioning auxiliary device and method based on Internet of things communication. Wherein, intelligence tower crane material location auxiliary device based on thing communication of networking includes: a controller and a plurality of micro image sensors connected to the controller; the plurality of miniature image sensors are all arranged on a lifting hook of the intelligent tower crane, at least one miniature image sensor is arranged on the inner side of a hook body of the lifting hook, and the plurality of miniature image sensors are respectively used for acquiring image information of a lifting part of goods to be loaded and unloaded at different positions of the lifting hook and sending the image information to the controller; the controller is used for detecting the relative position information between the hoisting part and the lifting hook according to the image information and controlling the lifting hook to move according to the relative position information so as to take and place the goods to be loaded and unloaded. The intelligent tower crane can improve automation and intelligence levels of the intelligent tower crane and reduce accident rate.

Description

Intelligent tower crane material positioning auxiliary device and method based on Internet of things communication

Technical Field

The application relates to the technical field of intelligent tower cranes, in particular to an intelligent tower crane material positioning auxiliary device and method based on Internet of things communication.

Background

With the development of the building industry, the mechanization degree of building construction is improved year by year, and a tower crane (for short, a tower crane) is widely applied to the building industry as a machine capable of realizing vertical and horizontal material transportation, particularly due to the characteristics of high lifting height, large lifting weight, large working amplitude and the like.

Along with the frequent emergence of tower crane incident, in order to protect tower crane operating personnel, the personal safety of company of serving as an emergency and reduce the incident that human error leads to, the unmanned tower crane promptly intelligence tower crane becomes new research and development direction, wherein, how to realize the automatic positioning of intelligence tower crane to the material and get in order to realize getting the problem of putting to await the opportune moment to the automation of material.

Disclosure of Invention

The application aims to provide an intelligent tower crane material positioning auxiliary device and method based on Internet of things communication.

This application first aspect provides an intelligence tower crane material location auxiliary device based on thing networking communication, includes: the system comprises a controller, a radio frequency signal transmitter and a plurality of radio frequency signal receivers;

the radio frequency signal emitter is arranged on the material when in use and broadcasts radio frequency signals to the surroundings;

the radio frequency signal receivers are respectively arranged at a plurality of different positions on the intelligent tower crane and are in communication connection with the controller;

each radio frequency signal receiver is used for receiving a radio frequency signal broadcast by the radio frequency signal transmitter and sending the radio frequency signal and arrival time thereof to the controller;

and the controller is used for calculating the positioning information of the material by adopting a time difference of arrival (TDOA) algorithm according to the position information of each radio frequency signal receiver and the arrival time of the radio frequency signal transmitted by the radio frequency signal receiver.

The second aspect of the application provides an intelligent tower crane material positioning auxiliary method based on internet of things communication, which is used for an intelligent tower crane material positioning auxiliary device based on internet of things communication provided by the first aspect of the application, and the method comprises the following steps:

the radio frequency signal receivers are used for respectively receiving radio frequency signals sent by radio frequency signal transmitters arranged on the materials and sending the radio frequency signals and arrival time thereof to the controller;

and the controller calculates the positioning information of the material by adopting a time difference of arrival (TDOA) algorithm according to the position information of each radio frequency signal receiver and the arrival time of the radio frequency signal transmitted by the radio frequency signal receiver.

The third aspect of the application provides an intelligent tower crane, the intelligent tower crane is provided with the intelligent tower crane material positioning auxiliary device based on internet of things communication that this application first aspect provided.

Compared with the prior art, the intelligent tower crane material positioning auxiliary device and method based on the internet of things communication provided by the application have the advantages that the controller, the radio frequency signal transmitter and the radio frequency signal receivers are arranged, the radio frequency signal transmitter is installed on a material when in use, and broadcasts radio frequency signals to the surroundings; a plurality of radio frequency signal receivers are located a plurality of different positions on the intelligent tower crane respectively, and all with controller communication connection, every radio frequency signal receiver all is used for receiving the radio frequency signal of radio frequency signal transmitter broadcast, and will radio frequency signal and arrival time send for the controller, the controller is used for according to every the positional information that radio frequency signal receiver located and the arrival time of the radio frequency signal who sends adopt arrival time difference TDOA algorithm to calculate the locating information of material to can realize the location to the job site material, help realizing the automation of lifting hook and get the operation of putting, improve automation, intelligent level and the operating efficiency of intelligent tower crane.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 shows a schematic structural diagram of an intelligent tower crane material positioning auxiliary device based on internet of things communication according to some embodiments of the present application;

FIG. 2 shows a schematic structural diagram of an intelligent tower crane provided by some embodiments of the present application;

fig. 3 shows a flowchart of an intelligent tower crane material positioning assisting method based on internet of things communication according to some embodiments of the present application.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

In addition, the terms "first" and "second", etc. are used to distinguish different objects, rather than to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The embodiment of the application provides an intelligent tower crane material positioning auxiliary device and method based on communication of the Internet of things, and the following description is exemplarily combined with the embodiment and the attached drawings.

Referring to fig. 1, which shows a schematic structural diagram of an intelligent tower crane material positioning auxiliary device based on internet of things communication according to some embodiments of the present application, the following exemplary descriptions may be understood with reference to fig. 2, and as shown in fig. 1, the intelligent tower crane material positioning auxiliary device based on internet of things communication may include: a controller 101, a radio frequency signal transmitter 102 and a plurality of radio frequency signal receivers 103;

the radio frequency signal transmitter 102 is mounted on the material when in use, and broadcasts radio frequency signals to the surroundings;

the radio frequency signal receivers 103 are respectively arranged at a plurality of different positions on the intelligent tower crane and are in communication connection with the controller 101;

each radio frequency signal receiver 103 is configured to receive a radio frequency signal broadcast by the radio frequency signal transmitter 102, and send the radio frequency signal and arrival time thereof to the controller 101;

the controller 101 is configured to calculate the location information of the material by using a TDOA (time difference of arrival) algorithm according to the location information of each rf signal receiver 103 and the arrival time of the rf signal transmitted by the receiver.

Compared with the prior art, the intelligent tower crane material positioning auxiliary device based on the internet of things communication provided by the embodiment of the application is provided with the controller 101, the radio frequency signal transmitter 102 and the radio frequency signal receivers 103, wherein the radio frequency signal transmitter 102 is installed on a material when in use and broadcasts radio frequency signals to the surroundings; a plurality of radio frequency signal receiver 103 locate a plurality of different positions on the intelligent tower crane respectively, and all with controller 101 communication connection, every radio frequency signal receiver 103 all is used for receiving the radio frequency signal of radio frequency signal transmitter 102 broadcast, and will radio frequency signal and arrival time send for controller 101, controller 101 is used for according to every the positional information that radio frequency signal receiver 103 was located and the arrival time of the radio frequency signal who sends adopt arrival time difference TDOA algorithm to calculate the locating information of material to can realize the location to the job site material, help realizing the automation of lifting hook and get the operation of putting, improve automation, intelligent level and the operating efficiency of intelligent tower crane, reduce accident rate and avoid the staff casualties.

Embodiments of the present application use a Time Difference of Arrival (TDOA) algorithm to calculate the location information of the material, where the TDOA is a method for locating by using the Time Difference, and by measuring the Time when a signal (e.g., a radio frequency signal) arrives at a monitoring station (e.g., the radio frequency signal receiver 103 in the present embodiment), the distance of a signal source (e.g., the radio frequency signal transmitter 102 in the present embodiment) can be determined. The location of the signal can be determined by the distance from the signal source to the plurality of radio monitoring stations (taking the radio monitoring stations as the center and the distance as the radius to make a circle). By comparing the time difference of the signals arriving at a plurality of monitoring stations, a hyperbola with the monitoring stations as the focus and the distance difference as the major axis can be formed, and the intersection point of the hyperbolas is the position where the radio frequency signal transmitter 102 is located, namely the position of the material. Since the TDOA algorithm is a relatively mature positioning algorithm, details are not described herein, and those skilled in the art can flexibly apply and modify the TDOA algorithm in combination with the prior art to achieve the purpose of the embodiments of the present application, which are all within the scope of the present application.

It should be noted that, in order to implement the TDOA algorithm, the multiple radio frequency signal receivers 103 need to be clock synchronized, and specifically, in some modified embodiments, the multiple radio frequency signal receivers 103 are connected to the controller 101 in a wired manner, and the controller 101 sends a clock synchronization signal to the multiple radio frequency signal receivers 103 at preset time intervals, so that the multiple radio frequency signal receivers 103 maintain clock synchronization. Therefore, the position of the radio frequency signal emitter 102, namely the positioning information of the material, can be accurately calculated by using the TDOA algorithm according to the arrival time of the radio frequency signal without performing clock synchronization with the radio frequency signal emitter 102.

In consideration of the fact that a construction site often has a plurality of materials and a plurality of intelligent tower cranes, how to identify the materials to be hoisted by the current intelligent tower crane from the plurality of materials on the intelligent tower crane construction site and how to hoist the materials by the proper intelligent tower crane is a problem to be further solved, in order to solve the problem, in some modified embodiments of the embodiment of the application, the radio frequency signal transmitted by the radio frequency signal transmitter 102 carries identification information of the intelligent tower crane;

the controller 101 is further configured to screen out radio frequency signals carrying identification information of the intelligent tower crane of the current intelligent tower crane from all the received radio frequency signals, calculate positioning information of materials needing to be hoisted by the current intelligent tower crane according to arrival time of the screened radio frequency signals, and identify the materials needing to be hoisted by the current intelligent tower crane from a plurality of materials on a construction site.

For example, can distinguish the sign to each intelligent tower crane, for example adopt the code, serial number etc. as intelligent tower crane identification information, when the operation, the user places or installs radio frequency signal transmitter 102 on the material, the radio frequency signal through radio frequency signal transmitter 102 transmission carries intelligent tower crane identification information, can ensure that the intelligent tower crane screens out the radio frequency signal of this radio frequency signal transmitter 102 and then fixes a position this radio frequency signal transmitter 102 according to this intelligent tower crane identification information, thereby discern the material that needs current intelligent tower crane to hoist in a plurality of materials of job site.

The rf signal transmitter 102 may be manufactured as an electronic tag, and is attached to the material by attaching, clamping, binding, or the like. The radio frequency signal transmitter 102 may be pre-bound to an intelligent tower crane, or may be temporarily paired during construction, for example, in some modification embodiments, an input module is disposed on the radio frequency signal transmitter 102;

the radio frequency signal transmitter 102 is further configured to generate intelligent tower crane identification information according to the intelligent tower crane identification input by the user through the input module.

The input module can be implemented by a keyboard, a touch screen, and the like, and the embodiment of the application is not limited. Through this embodiment, the workman can be in the on-the-spot real-time input intelligence tower crane sign in order to select suitable intelligent tower crane to hoist, and compatibility and flexibility are better.

In addition, if a plurality of materials need to be hoisted by the same intelligent tower crane on site, hoisting orders need to be distinguished, so in some modification embodiments, the radio frequency signal transmitted by the radio frequency signal transmitter 102 carries information of the hoisting orders;

the controller 101 is further configured to determine a hoisting order of a plurality of materials to be hoisted by the current intelligent tower crane according to the hoisting order information, and sequentially hoist the materials according to the hoisting order and the positioning information of the materials to be hoisted by the current intelligent tower crane.

The hoisting sequence information may include one of serial number information input by a user through an input module on the radio frequency signal transmitter 102, current power-on time information of the radio frequency signal transmitter 102, or starting broadcast time of the radio frequency signal.

If the hoisting sequence information is serial number information input by a user through an input module on the radio frequency signal transmitter 102, the user can flexibly set and adjust the hoisting sequence of each material through the input module, and the method has the advantages of convenience, rapidness, flexibility and adjustability.

If the hoisting order information is the current starting time information of the radio frequency signal transmitter 102 or the starting broadcast time of the radio frequency signal, the user does not need to perform manual input operation, only needs to start the radio frequency signal transmitter 102 or trigger broadcast, and can automatically generate corresponding hoisting order information according to the starting time or the broadcast trigger time and other time information, so that the use is more convenient and faster.

It should be noted that, in order to perform positioning by using the TDOA method, the number of the radio frequency signal receivers 103 is at least 4, which can be understood with reference to fig. 2, and they can be distributed at a plurality of positions on the crane arm, the tower body and the hook of the smart tower crane. It is easy to understand that by measuring and recording the rotation angle, amplitude variation information and lifting information of the intelligent tower crane and combining the specific installation position of the radio frequency signal receiver 103, the real-time position information of the radio frequency signal receiver 103 can be calculated at any time (specifically, the calculation can be performed by combining the geometric relationship, which is not described herein any more), and then the TDOA algorithm is adopted to realize the positioning of the material.

In addition, the radio frequency signal transmitter 102 and the radio frequency signal receiver 103 can be implemented by any medium-long distance wireless communication module such as a GPRS/4G wireless communication module, a 2.4G wireless communication module, a WiFi wireless communication module, etc., considering that the tower crane is high in height, many on-site shelters are present, the communication distance of the radio frequency signal needs to be as far as possible and the radio frequency signal has strong penetration capability and anti-interference capability, therefore, the embodiment of the present application preferably uses 433M wireless module to implement the radio frequency signal transmitter 102 and the radio frequency signal receiver 103, because the 433M wireless module has strong signal, long transmission distance, ideal transmission distance of about 3 kilometers, and the advantages of strong penetration and diffraction capability, small attenuation in the transmission process and the like, the tower crane can be well suitable for the working scene of an intelligent tower crane, therefore, a better signal transmission effect is obtained, and the implementation stability and reliability of the scheme are improved.

In the embodiment, an intelligent tower crane material positioning auxiliary device based on internet of things communication is provided, and correspondingly, the application further provides an intelligent tower crane material positioning auxiliary method based on internet of things communication. The intelligent tower crane material positioning auxiliary method based on the internet of things communication provided by the embodiment of the application can be realized based on the intelligent tower crane material positioning auxiliary device based on the internet of things communication, please refer to fig. 3, which shows a flow chart of the intelligent tower crane material positioning auxiliary method based on the internet of things communication provided by some embodiments of the application. Since the method embodiment is basically similar to the system embodiment, the description is simple, and the relevant points can be referred to the partial description of the system embodiment. The method embodiments described below are merely illustrative.

As shown in fig. 3, an intelligent tower crane material positioning auxiliary method based on internet of things communication can be executed by the intelligent tower crane material positioning auxiliary device based on internet of things communication provided by any of the above embodiments, and may include the following steps:

step S101: the radio frequency signal receivers are used for respectively receiving radio frequency signals sent by radio frequency signal transmitters arranged on the materials and sending the radio frequency signals and arrival time thereof to the controller.

Step S102: and the controller calculates the positioning information of the material by adopting a time difference of arrival (TDOA) algorithm according to the position information of each radio frequency signal receiver and the arrival time of the radio frequency signal transmitted by the radio frequency signal receiver.

In some variations of the embodiments of the present application, the plurality of rf signal receivers are connected to the controller in a wired manner, and the controller sends a clock synchronization signal to the plurality of rf signal receivers at preset time intervals, so that the plurality of rf signal receivers maintain clock synchronization.

In some variations of the embodiments of the present application, the calculating, by the controller, the location information of the material by using a time difference of arrival TDOA algorithm according to the location information of each of the radio frequency signal receivers and the arrival time of the radio frequency signal transmitted by the radio frequency signal receiver includes:

the controller screens out the radio-frequency signal that carries the intelligent tower crane identification information of current intelligent tower crane from all radio-frequency signals received to calculate the locating information of the material that needs current intelligent tower crane hoist and mount according to the arrival time of the radio-frequency signal who selects, with discern the material that needs current intelligent tower crane hoist and mount in a plurality of materials from the job site.

In some modified embodiments of the present application, the radio frequency signal transmitted by the radio frequency signal transmitter carries hoisting order information;

the method further comprises the following steps:

the controller determines the hoisting sequence of the materials needing to be hoisted by the current intelligent tower crane according to the hoisting sequence information, and sequentially hoists the materials according to the hoisting sequence and the positioning information of the materials needing to be hoisted by the current intelligent tower crane.

In some variations of the embodiments of the present application, the hoisting sequence information includes one of serial number information input by a user through an input module on the radio frequency signal transmitter, current power-on time information of the radio frequency signal transmitter, or start broadcast time of the radio frequency signal.

In some variations of the embodiments of the present application, the plurality of rf signal receivers are disposed at a plurality of positions on a boom, a body, and a hook of the smart tower crane.

In some variations of the embodiments of the present application, the radio frequency signal transmitter and the radio frequency signal receiver are both implemented by 433M wireless modules.

The intelligent tower crane material positioning auxiliary method based on the internet of things communication provided by the embodiment of the application and the intelligent tower crane material positioning auxiliary device and method based on the internet of things communication provided by the embodiment of the application are based on the same invention concept and have the same beneficial effects.

The embodiment of the application further provides an intelligent tower crane corresponding to the intelligent tower crane material positioning auxiliary device and method based on the internet of things communication provided by the embodiment, the intelligent tower crane is provided with the intelligent tower crane material positioning auxiliary device based on the internet of things communication provided by any embodiment, and the intelligent tower crane material positioning auxiliary method based on the internet of things communication provided by any embodiment can be executed.

The intelligent tower crane provided by the embodiment of the application and the intelligent tower crane material positioning auxiliary device and method based on the internet of things communication provided by the embodiment of the application have the same beneficial effects from the same invention conception.

In addition, in order to further improve the intellectualization and the unmanned of the intelligent tower crane, the intelligent tower crane can also reduce the safety accidents of tower crane hoisting by configuring the following sensing equipment for the automatic grabbing process of the tower crane hook, and the following description is combined with the example.

In some embodiments, the sensing device for the automatic grabbing process of the tower crane hook may include: the device comprises a controller, an automatic lifting hook, a lifting hook driving mechanism, a visual sensor and a sensor driving mechanism; wherein,

the automatic lifting hook is connected with the lifting hook driving mechanism, the visual sensor is connected with the sensor driving mechanism, and the lifting hook driving mechanism, the sensor driving mechanism and the visual sensor are all connected with the controller;

the controller is passing through lifting hook drive mechanism control during automatic lifting hook motion, still pass through sensor drive mechanism control vision sensor follows automatic lifting hook motion to control vision sensor orientation automatic lifting hook place region gathers vision sensing signal, with the basis vision sensing signal control automatic lifting hook snatchs the goods.

The controller can be realized by a computer host, a microcontroller, a Programmable Logic Controller (PLC) and the like, the automatic lifting hook can be realized by any automatic lifting hook provided by the prior art, and the embodiment of the application is not limited.

It should be noted that, if above-mentioned tower crane is unmanned tower crane, then the overhead of controlling on ground can be located to this controller, should control the overhead display screen that is provided with to the tower crane control personnel look over live picture around the lifting hook through the display screen, corresponding, the aforesaid basis vision sensing signal control automatic lifting hook snatchs the goods, can indicate to play this vision sensing signal through the display screen of locating the platform of controlling, makes the tower crane control personnel accurately know the condition around the lifting hook to control automatic lifting hook and hang and get the goods.

In addition, the controller, the vision sensor and the sensor driving mechanism can be connected in a wireless mode or in a wired mode, considering that the stability of a wireless signal is relatively poor, and safety accidents are possibly caused by signal interruption and errors, in some embodiments, the vision sensor and the sensor driving mechanism are connected with the controller by cables, and specifically, the cables can be connected to a console on the ground along a crane boom and a standard joint and connected with the controller on the console, so that the quality and the stability of the signals are improved, and the safety accidents caused by signal problems are avoided.

Through being used for the automatic sensing equipment who snatchs the process of tower crane lifting hook for intelligent tower crane configuration, can make through setting up controller, automatic lifting hook, lifting hook actuating mechanism, visual sensor and sensor actuating mechanism, automatic lifting hook with lifting hook actuating mechanism is connected, visual sensor with sensor actuating mechanism is connected, lifting hook actuating mechanism with visual sensor all with the controller is connected, and the controller is passing through when lifting hook actuating mechanism control the automatic lifting hook motion, still pass through sensor actuating mechanism control visual sensor follows automatic lifting hook motion, and control visual sensor orientation automatic lifting hook place region gathers visual sensing signal, with according to visual sensing signal control automatic lifting hook snatchs the goods to can make visual sensor follow automatic lifting hook motion and closely gather visual sensing signal, compared with the mode of installing the zoom camera in the prior art, the method can avoid the problem that the manual zooming influences the operation of tower crane operators or the automatic zooming misalignment causes blurred pictures, can automatically acquire high-definition and accurate vision sensing signals without additional operation of the tower crane operators, so that the operator of the tower crane can observe the conditions of the lifting hook, the surrounding environment, the obstacles and the like according to the visual sensing signal, solves the potential safety hazard of dead zones such as 'isolating mountain crane' and the like, ensures the hoisting safety of the dead zones, can further utilize an automatic lifting hook to automatically grab goods based on the visual sensing signal, reduces the problems of inaccurate hook hoisting and the like, does not need a dragger to hoist the goods to the lifting hook by adopting a manual operation mode, the participation of staffs such as a householder, a commander and the like can be reduced, so that the probability of accidental injury of the staffs by goods is further reduced, and the incidence rate of safety accidents is reduced.

In some variations of embodiments of the present application, the hook driving mechanism includes a first trolley, the sensor driving mechanism includes a second trolley, and the first trolley and the second trolley are both disposed on a boom of a tower crane and move along the boom.

Specifically, in some embodiments, the vision sensor is suspended on the second trolley by a rope pulley assembly, and moves in the horizontal direction according to the movement of the second trolley along the crane boom, and moves in the vertical direction according to the retracting action of the rope pulley assembly.

In addition, the first trolley and the second trolley can also adopt two sets of different amplitude-variable steel wire ropes to respectively carry out traction movement, so that the distance between the first trolley and the second trolley can be adjusted, the distance from a visual sensor to an automatic lifting hook can be conveniently adjusted, and a better observation visual field can be obtained.

In addition, the first trolley and the second trolley need to adopt two sets of different lifting steel wire ropes to respectively pull the automatic lifting hook and the vision sensor to lift, so that the vision sensor can be leveled with the automatic lifting hook, and can also be higher than the automatic lifting hook or lower than the automatic lifting hook to acquire signals, and the vision sensor can be applied to various working conditions to obtain a better observation visual field.

Through setting up the independent drive vision sensor of second dolly, can be according to the nimble following relation of adjusting between vision sensor and the automatic lifting hook of operating condition, for example, can adjust and keep 3 meters intervals along the width of cloth direction between vision sensor and the automatic lifting hook, keep a meter interval along direction of height, perhaps, adjust and keep a meter interval along the width of cloth direction between vision sensor and the automatic lifting hook, keep parallelly (the interval is zero) etc. along direction of height to obtain the observation field of vision of preferred.

After the following relationship is determined, the controller can automatically control the vision sensor to follow the movement according to the following relationship when controlling the movement of the automatic lifting hook so as to keep the same observation visual field. In addition, the operator can also adjust the following relationship according to actual requirements, and the embodiment of the present application does not limit specific values thereof.

It should be noted that, what relate to in this application embodiment follows means that certain distance and angle are kept with automatic lifting hook when moving to obtain the same observation field of vision, improve the tower crane and control personnel and observe experience, avoid the field of vision transform and influence the tower crane and control personnel and observe.

The vision sensor that this application embodiment provided can be connected with the controller through the cable, the cable can be receive and release through the winder, the winder can be located on the second dolly, the winder can keep the cable in the state of tightening up, avoids the cable slack to rock and influence other parts and move.

In other modified embodiments, the tower crane is provided with a variable amplitude sensor and a height sensor, the variable amplitude sensor is used for detecting variable amplitude position information of the automatic lifting hook, and the height sensor is used for detecting height position information of the automatic lifting hook;

and the controller controls the vision sensor to move along with the automatic lifting hook according to the amplitude variation position information and the height position information of the automatic lifting hook.

The amplitude sensor and the height sensor can be realized by sensors provided by the prior art, and can be mechanical sensors, infrared sensors or laser sensors, which can achieve the purpose of the embodiment of the application, and the embodiment of the application is not limited.

The amplitude-variable position information can comprise the horizontal distance from the automatic lifting hook to the standard knot along the amplitude-variable direction (namely the horizontal direction of the cargo boom), the height position information can comprise the vertical distance from the automatic lifting hook to the cargo boom along the vertical direction, and according to the amplitude-variable position information and the height position information, as the visual sensor and the automatic lifting hook are also driven by the trolley and the rope, the amplitude-variable position information and the height position information of the position where the visual sensor is located can be determined according to the amplitude-variable position information and the height position information of the automatic lifting hook and by combining the predetermined following relation, and the visual sensor is controlled to move to the position where the visual sensor is located, so that the following movement with the automatic lifting hook is realized.

Specifically, in some embodiments, the controller further determines a rough relative position relationship between the vision sensor and the automatic lifting hook according to the amplitude variation position information and the height position information of the automatic lifting hook, and coarsely adjusts the relative position relationship according to the rough relative position relationship, and turns the vision sensor to the area where the automatic lifting hook is located. Because the amplitude variation position information and the height position information of the automatic lifting hook and the visual sensor are obtained when the automatic lifting hook and the visual sensor move along, the visual sensor can be quickly and coarsely adjusted to turn to the area where the automatic lifting hook is located according to the existing data through the implementation mode.

In view of the fact that the automatic hook is not necessarily located at a preferred position in the visual sensor field after coarse adjustment, and the visual sensor may swing with air disturbance in the high altitude and fail to accurately capture a desired picture, in some modified embodiments, on the basis of the above embodiment, the controller further identifies the automatic hook in the visual sensing signals collected by the visual sensor after coarse adjustment of the visual sensor to the area where the automatic hook is located, determines a fine relative position relationship between the visual sensor and the automatic hook, and fine-adjusts the visual sensor according to the fine relative position relationship, so that the visual sensor after fine adjustment collects visual sensing signals that are in line with the desired visual sensor. In this embodiment, the image recognition technology provided by the prior art can be used to recognize the automatic lifting hook in the visual sensing signal, so as to determine the fine relative position relationship between the visual sensor and the automatic lifting hook, and the visual sensor is finely adjusted according to the fine relative position relationship, so that the visual sensor after fine adjustment acquires the visual sensing signal which meets the expectation, wherein the expectation can be that the automatic lifting hook is located in the middle position of the picture of the visual sensing signal, or the automatic lifting hook and the lifted cargo are located in the middle position of the picture of the visual sensing signal as a whole, and the embodiment of the application is not limited. Through the implementation mode, the vision sensing signal which is in line with the expectation can be recorded through fine adjustment on the basis of coarse adjustment, and the precision of the vision sensing signal is improved, so that the vision sensing signal is used for accurately controlling the action of the automatic lifting hook.

In aforementioned arbitrary embodiment, above-mentioned vision sensor can include cloud platform camera or laser scanner, and it all can gather and obtain accurate vision sensing signal to the staff accuracy is known lifting hook operating mode is controlled to the help tower crane, and the automatic lifting hook hoist and mount goods of accurate control.

It is easy to understand if vision sensor weight is lighter, can swing along with air disturbance in the high altitude, influence the shooting effect, consequently, in some change implementation modes, still can for vision sensor configuration gesture stable control ware to help vision sensor stabilize the gesture in the high altitude, reduce and rock, improve the shooting effect, and then help the tower crane control personnel to accurately know the lifting hook operating mode, and the automatic lifting hook hoist and mount goods of accurate control.

The attitude stabilization controller can be realized by at least one of a counterweight, a flywheel and a control moment gyro, and can be realized by one of the counterweight, the flywheel and the control moment gyro or by a plurality of the counterweight, the flywheel and the control moment gyro. Wherein, the counterweight is most easily realized and the implementation cost is lowest; if the flywheel is additionally arranged, the flywheel should be horizontally placed, and the generated angular momentum can help to keep the posture of the vision sensor stable; in addition, the principle of the control moment gyro is that when a torque perpendicular to the rotation axis of the gyro is given to the gyro, a precession moment perpendicular to the rotation axis and perpendicular to the torque axis is generated.

In consideration of the problems that a lifting hook falls off, a rope falls off and the like often occur in the lifting process due to the reasons that goods are not bound tightly, hooked inaccurately and the like when the goods are lifted, so that the goods fall off to injure ground workers such as a cable businessman and the like, and safety accidents are caused, and therefore the abnormal lifting of the tower crane needs to be further detected to reduce the lifting safety accidents of the tower crane. On the basis of any of the above embodiments, in some modification embodiments, the sensing device for the automatic grabbing process of the tower crane hook may further include: an attitude sensor in communicative connection with the controller;

the attitude sensor is fixedly arranged on the automatic lifting hook and used for acquiring attitude data of the automatic lifting hook in real time and sending the attitude data to the controller;

and the controller determines the inclination information and the swing information of the automatic lifting hook according to the attitude data, and judges whether the lifting state of the automatic lifting hook is abnormal or not according to the inclination information and the swing information.

The attitude sensor may be implemented by motion sensors such as, but not limited to, a three-axis gyroscope, a three-axis accelerometer, and a three-axis electronic compass, and the embodiments of the present application are not limited thereto.

It should be noted that, if above-mentioned tower crane is unmanned tower crane, then this controller can locate on the platform is controlled on ground, should control and be provided with display screen and/or stereo set be connected with the controller on the platform for whether the play to rise state that is used for reporting automatic lifting hook through image and/or voice mode is unusual, so that the tower crane control personnel know the play to rise state of automatic lifting hook and whether unusual.

In addition, the controller and the attitude sensor can be connected in a wireless mode or in a wired mode, considering that the stability of a wireless signal is relatively poor and safety accidents are possibly caused due to signal interruption and errors, in some embodiments, the attitude sensor and the controller are preferably connected in a wired mode by using a cable, and specifically, the cable can be connected to a console on the ground along a crane boom and a standard joint and is connected with the controller on the console, so that the signal quality and the stability are improved, and the safety accidents caused by the fact that the lifting state of the automatic lifting hook cannot be found in time due to signal problems are avoided.

Compared with the prior art, the above-mentioned sensing equipment that is used for automatic process of snatching of tower crane lifting hook through further set up with controller communication connection's attitude sensor, just attitude sensor is fixed to be set up on automatic lifting hook for gather in real time automatic lifting hook's attitude data sends for the controller, the controller basis attitude data confirms automatic lifting hook's slope information and swing information, and according to slope information and swing information judge whether automatic lifting hook's the state of lifting to rise is unusual. Because before the lifting hook drops, the rope drops, the lifting hook often can produce great inclination, perhaps shake etc. unusually by a wide margin, consequently, utilize automatic lifting hook's gesture data can judge the tower crane hoisting state more accurately and whether unusual to in time carry out the pertinence when detecting unusually, avoid the goods to scatter and injure the workman, reduce the tower crane hoisting stage because of the incident incidence that the goods of hoist and mount scatter and lead to.

The gesture sensor that this application embodiment provided can be connected with the controller through the cable, the cable can be receive and release through the winder, the winder can be located and hang on the dolly of automatic lifting hook, the winder can keep the cable to be in the state of tightening up, avoids the cable to relax and rocks and influence other part operations.

In some modifications of the embodiments of the present application, the controller stores no-load attitude data collected by the attitude sensor when the automatic hook is no-load, and determines inclination information and swing information of the automatic hook by comparing the load attitude data with the no-load attitude data after receiving load attitude data collected by the attitude sensor when the automatic hook is loaded.

The no-load attitude data is basic attitude data which is collected in a static state that the automatic lifting hook is no-load and no wind exists around and is used for comparison, and after the automatic lifting hook hangs a cargo, namely a load, the inclination information and the swing information of the automatic lifting hook can be obtained by comparing the load attitude data with the no-load attitude data.

The inclination information refers to information such as an inclination angle generated by rotation of the automatic lifting hook with the automatic lifting hook serving as a reference, the swing information refers to information such as a swing angle generated by swing of the automatic lifting hook with a trolley for suspending the automatic lifting hook serving as a reference, the radius of a circle can be calculated according to a path (a section of arc line on the circle) which the automatic lifting hook passes through in the swing process, the swing angle can be calculated according to the length of the arc line, and whether the state of the automatic lifting hook is abnormal or not can be judged and predicted according to the inclination information and the swing information.

Specifically, the controller may determine inclination change information and swing change information of a unit time window according to the inclination information and the swing information by using a sliding time window method, and determine whether the lifting state of the automatic lifting hook is abnormal according to the inclination change information and the swing change information.

Wherein the tilt change information includes at least one of a tilt change width and a tilt angle at the end of the unit time window, and the wobble change information includes at least one of a wobble change width and a wobble angle at the end of the unit time window.

The inclination change amplitude is a difference value between an inclination angle at the last stage of a unit time window and an inclination angle at the initial stage, the inclination angle of the automatic lifting hook inclining to the unhooking direction can be defined to be positive, the inclination angle at the opposite direction is negative, if the difference value is a positive value and is greater than a preset threshold value, the abnormal probability is greater, and the lifting abnormity can be directly judged or whether the lifting abnormity exists is further judged by combining other factors.

The swing change amplitude is a difference value between an inclination angle at the last stage of a unit time window and an inclination angle at the initial stage, the swing angle of the automatic lifting hook swinging towards the unhooking direction can be defined to be positive, the swing angle in the opposite direction is negative, if the difference value is a positive value and is greater than a preset threshold value, the abnormal probability is greater, and the lifting abnormity can be directly judged or whether the lifting abnormity exists is further judged by combining other factors.

In some modification embodiments, in order to improve the determination accuracy, the controller may input the inclination change information and the swing change information into a first neural network model trained in advance, and determine whether the lifting state of the automatic lifting hook is abnormal according to the first neural network model.

The first neural network model can be obtained by training a large number of training samples, the training samples comprise a plurality of groups of training data determined by experiments, each group of training data comprises inclination change information and swing change information, and whether abnormal labels exist or not is judged, through training, the first neural network model can output whether abnormal labels exist or not according to the input inclination change information and swing change information, and then the first neural network model can be used for judging whether the lifting state of the automatic lifting hook is abnormal or not.

The input data of the first neural network model comprises inclination change information and swing change information, the output data is whether an abnormal label (a binary label) exists or not, and the whole input parameters and the output are simple, so that the neural network can be realized by adopting a BP neural network, a convolutional neural network CNN and other neural networks with simple structures, can be composed of an input layer, a hidden layer and an output layer, and the purpose of the embodiment of the application can be realized without complex design, thereby reducing the implementation difficulty and obtaining a more accurate judgment result. The BP neural network and the convolutional neural network CNN are both mature neural network models, and those skilled in the art can refer to the prior art and combine actual requirements to flexibly construct the first neural network model to achieve the purpose of the embodiment of the present application.

Through the embodiment, whether the lifting state of the automatic lifting hook is abnormal or not can be accurately judged by utilizing the neural network model, and compared with a mode of judging according to a threshold value, the accuracy is higher.

Consider that environmental wind also can influence the hoist and mount firmness of goods, if wind direction is the same with the unhook direction, can increase the probability that goods unhook, and the wind speed is big more, and the unhook probability is big more, and is opposite, if wind direction is opposite with the unhook direction, can reduce the probability that goods unhook, for more accurate judgement whether the rising state of automatic lifting hook is unusual, in some change implementation modes, the above-mentioned sensing equipment that is used for the automatic process of snatching of tower crane lifting hook still includes: the wind direction sensor and the wind speed sensor are arranged on the tower crane;

the wind direction sensor and the wind speed sensor are connected with the controller and are respectively used for collecting wind direction information and wind speed information around the automatic lifting hook and sending the wind direction information and the wind speed information to the controller;

the controller is further used for comprehensively judging whether the lifting state of the automatic lifting hook is abnormal or not according to the inclination change information, the swing change information, the wind direction information and the wind speed information.

The specific determination method may be as described above, based on the preset threshold, to comprehensively determine whether the lifting state of the automatic lifting hook is abnormal, or a neural network may be used to determine whether the lifting state of the automatic lifting hook is abnormal, for example, in some embodiments, the controller may input the tilt change information, the swing change information, the wind direction information, and the wind speed information into a second neural network model trained in advance, and determine whether the lifting state of the automatic lifting hook is abnormal according to the second neural network model.

The second neural network model can be obtained by training a large number of training samples, the training samples comprise a plurality of groups of training data determined by experiments, each group of training data comprises inclination change information, swing change information, wind direction information and the wind speed information, and whether abnormal labels exist or not is judged by the second neural network model through training, so that whether abnormal labels exist or not can be output according to the input inclination change information, swing change information, wind direction information and the wind speed information, and then whether the lifting state of the automatic lifting hook is abnormal or not can be judged by the second neural network model.

Similar to the first neural network model, the input data of the second neural network model includes inclination change information, swing change information, wind direction information and wind speed information, the output data is a label (binary label) for whether an abnormality exists, and the whole input parameters and output are simple, so that the neural network can be realized by adopting a neural network with a simple structure, such as a BP (back propagation) neural network, a Convolutional Neural Network (CNN), and the like, and can be composed of an input layer, a hidden layer and an output layer. The BP neural network and the convolutional neural network CNN are both mature neural network models, and those skilled in the art can refer to the prior art and combine actual requirements to flexibly construct the first neural network model to achieve the purpose of the embodiment of the present application.

Through the embodiment, whether the lifting state of the automatic lifting hook is abnormal or not can be accurately judged by using the second neural network model, the influence of wind power on the abnormal unhooking is considered, the neural network model is used for judging, the accuracy is high, and whether the lifting state of the automatic lifting hook is abnormal or not can be accurately judged.

On the basis of any of the above embodiments, in another modified embodiment, the sensing device for the automatic grabbing process of the tower crane hook may further include: the alarm device is arranged on the automatic lifting hook;

the alarm device is connected with the controller, and the controller broadcasts abnormal alarm information through the alarm device when detecting that the lifting state of the automatic lifting hook is abnormal.

The alarm device can comprise a buzzer, a sound box and other voice alarm devices, and can warn surrounding workers to evacuate by broadcasting abnormal alarm information to the surrounding, so that the condition that the goods are unhooked to hurt the nearby workers is avoided, and the accident loss is reduced.

In addition, after the goods are lifted, the controller can comprehensively judge whether the lifting state of the tower crane lifting hook is abnormal according to the visual sensing signal and the attitude data acquired by the attitude sensor, for example, taking the visual sensing signal as a real-time picture shot by a pan-tilt camera as an example, the lifting hook and the rope can be identified through image identification, and whether the abnormality exists can be judged through the relative positions of the lifting hook and the rope in the pictures shot successively and the movement trend of the rope, for example, if the rope moves to a preset range at the outlet of the lifting hook and has a trend of continuing moving towards the unhooking direction, the unhooking risk is judged, namely the lifting state of the tower crane lifting hook is judged to be abnormal; otherwise, the unhooking risk can be judged, namely the lifting state of the tower crane lifting hook is judged to be abnormal. Among them, the image recognition technology is a mature technology in the prior art, and those skilled in the art can directly apply the prior art to the present application to achieve the purpose of the embodiments of the present application.

It should be noted that, if the lifting state of the tower crane lifting hook is comprehensively judged to be abnormal according to the attitude data and the visual sensing signal, the specific judgment mode may be: if the lifting state of the tower crane lifting hook is judged to be abnormal by adopting any one of the attitude data and the visual sensing signal, the lifting state of the tower crane lifting hook is judged to be abnormal on the whole, and if not, the lifting state of the tower crane lifting hook is judged to be abnormal. Therefore, whether the lifting state of the tower crane lifting hook is abnormal or not is comprehensively and accurately judged by utilizing the attitude data and the visual sensing signals, and the accuracy is improved.

In addition, in order to further improve the intellectualization and the unmanned of the intelligent tower crane, the intelligent tower crane can also reduce the safety accidents of tower crane hoisting by configuring the following sensing internet of things system for sensing the abnormal hoisting state of the intelligent tower crane, and the following description is combined with the example.

In some embodiments, the sensing internet of things system for sensing the abnormal lifting state of the intelligent tower crane may include: the device comprises a controller and an attitude sensor in communication connection with the controller;

the attitude sensor is fixedly arranged on the tower crane hook and used for acquiring attitude data of the tower crane hook in real time and sending the attitude data to the controller;

and the controller determines the inclination information and the swing information of the tower crane lifting hook according to the attitude data and judges whether the lifting state of the tower crane lifting hook is abnormal or not according to the inclination information and the swing information.

The controller can be realized by a computer host, a microcontroller, a Programmable Logic Controller (PLC) and the like, the attitude sensor can be realized by motion sensors such as a triaxial gyroscope, a triaxial accelerometer, a triaxial electronic compass and the like, and the embodiment of the application is not limited.

It should be noted that, if above-mentioned tower crane is unmanned tower crane, then this controller can locate on the platform is controlled on ground, should control the bench and be provided with display screen and/or stereo set be connected with the controller for whether play to rise the state of tower crane lifting hook is unusual through image and/or voice mode broadcast, so that the tower crane control personnel know the play to rise the state of tower crane lifting hook and whether unusual.

In addition, the controller and the attitude sensor can be connected in a wireless mode or in a wired mode, considering that the stability of a wireless signal is relatively poor and safety accidents are possibly caused due to signal interruption and errors, in some embodiments, the attitude sensor and the controller are connected by a cable in a preferred wired mode, specifically, the cable can be connected to a control platform on the ground along a crane boom and a standard joint and is connected with the controller on the control platform, so that the signal quality and the stability are improved, and the problem that the lifting state abnormity of the tower crane lifting hook cannot be timely found due to signal problems and further safety accidents are caused is avoided.

Compared with the prior art, the sensing thing networking systems that is used for intelligence tower crane to play to rise abnormal state perception that this application embodiment provided is through setting up the controller and with controller communication connection's attitude sensor, just attitude sensor is fixed to be set up on the tower crane lifting hook, is used for real-time acquisition the attitude data of tower crane lifting hook sends for the controller, the controller basis attitude data confirms the slope information and the swing information of tower crane lifting hook, and according to slope information and swing information judge whether the play to rise state of tower crane lifting hook is unusual. Because before the lifting hook drops, the rope drops, the lifting hook often can produce great inclination, perhaps shake etc. unusually by a wide margin, consequently, utilize the attitude data of tower crane lifting hook can judge the tower crane hoisting state more accurately and whether unusual to in time carry out the pertinence when detecting unusually, avoid the goods to scatter and injure the workman, reduce the tower crane hoisting stage because of the incident incidence that the goods scatters and leads to.

The attitude sensor that this application embodiment provided can be connected with the controller through the cable, the cable can be receive and release through the winder, the winder can be located and hang on the dolly of tower crane lifting hook, the winder can keep the cable to be in the state of tightening up, avoids the cable to relax and rocks and influence other part operations.

In some change implementation modes of this application embodiment, the controller storage has when the tower crane lifting hook is unloaded the unloaded attitude data that attitude sensor gathered, and receiving when the tower crane lifting hook is loaded behind the load attitude data that attitude sensor gathered, through the comparison load attitude data with unloaded attitude data confirms the slope information and the swing information of tower crane lifting hook.

The no-load attitude data is basic attitude data which is collected in a static state that the tower crane lifting hook is no-load and no wind exists around and is used for comparison, and after goods, namely loads, are hung on the tower crane lifting hook, the inclination information and the swing information of the tower crane lifting hook can be obtained by comparing the load attitude data with the no-load attitude data.

Wherein, above-mentioned inclination information is that the tower crane lifting hook uses self to rotate and information such as inclination that produces as the reference, and above-mentioned swing information is that the tower crane lifting hook is with the dolly that hangs this tower crane lifting hook as information such as the swing angle that the reference swing produced, wherein, according to the route (one section pitch arc on the circle) that the tower crane lifting hook passed through at the swing in-process, can calculate the radius of circle, and then calculate the swing angle according to pitch arc length, according to this inclination information and swing information, can judge, predict whether the state of tower crane lifting hook is unusual.

Specifically, the controller can adopt a sliding time window method, determine inclination change information and swing change information of a unit time window according to the inclination information and the swing information, and judge whether the lifting state of the tower crane lifting hook is abnormal or not according to the inclination change information and the swing change information.

The inclination change amplitude is a difference value between an inclination angle at the last stage and an inclination angle at the initial stage of a unit time window, the inclination angle of the tower crane hook inclined towards the unhooking direction can be defined to be positive, the inclination angle at the opposite stage is negative, if the difference value is a positive value and is greater than a preset threshold value, the abnormal probability is high, and the abnormal lifting can be directly judged or whether the abnormal lifting exists can be further judged by combining other factors.

The swing change amplitude is a difference value between an inclination angle at the last stage and an inclination angle at the initial stage of a unit time window, the swing angle of the tower crane hook swinging towards the unhooking direction can be defined to be positive, the swing angle at the opposite direction is negative, if the difference value is a positive value and is greater than a preset threshold value, the abnormal probability is higher, and the abnormal lifting can be directly judged or whether the abnormal lifting exists can be further judged by combining other factors.

Considering that whether the lifting abnormality exists or not is judged only by comparing the threshold value, and the probability of misjudgment exists, in order to improve the judgment accuracy, in some modification embodiments, the controller may input the inclination change information and the swing change information into a first neural network model trained in advance, and judge whether the lifting state of the tower crane lifting hook is abnormal or not according to the first neural network model.

The first neural network model can be obtained by training a large number of training samples, the training samples comprise multiple groups of training data determined by experiments, each group of training data comprises inclination change information and swing change information, and whether abnormal labels exist or not is judged, through training, the first neural network model can output whether abnormal labels exist or not according to the input inclination change information and swing change information, and then the first neural network model can be used for judging whether the lifting state of the tower crane lifting hook is abnormal or not.

Through above-mentioned embodiment, can utilize the comparatively accurate judgement of neural network model whether the lifting state of tower crane lifting hook is unusual, compare in the mode of judging according to the threshold value, the precision is higher.

Considering that environmental wind also can influence the hoist and mount firmness of goods, if wind direction is the same with unhook direction, can increase the probability of goods unhook, and the wind speed is big more, and the unhook probability is big more, and is opposite, if wind direction is opposite with unhook direction, can reduce the probability of goods unhook, for more accurate judgement the tower crane lifting hook play to rise the state and whether unusual, in some change implementation modes, above-mentioned a sensing thing networking systems for intelligent tower crane plays to rise unusual state perception still includes: the wind direction sensor and the wind speed sensor are arranged on the tower crane;

the wind direction sensor and the wind speed sensor are both connected with the controller and are respectively used for acquiring wind direction information and wind speed information around the tower crane hook and sending the wind direction information and the wind speed information to the controller;

the controller is further used for comprehensively judging whether the lifting state of the tower crane lifting hook is abnormal or not according to the inclination change information, the swing change information, the wind direction information and the wind speed information.

The specific judgment mode is as described above, whether the lifting state of the tower crane lifting hook is abnormal or not can be comprehensively judged based on the preset threshold value, and whether the lifting state of the tower crane lifting hook is abnormal or not can also be judged by adopting a neural network, for example, in some embodiments, the controller can input the inclination change information, the swing change information, the wind direction information and the wind speed information into a pre-trained second neural network model, and judge whether the lifting state of the tower crane lifting hook is abnormal or not according to the second neural network model.

The second neural network model can be obtained by training a large number of training samples, the training samples comprise a plurality of groups of training data determined by experiments, each group of training data comprises inclination change information, swing change information, wind direction information and the wind speed information, and whether abnormal labels exist or not is output through training, so that whether the abnormal labels exist or not can be judged by the second neural network model according to the input inclination change information, swing change information, wind direction information and the wind speed information, and then whether the lifting state of the tower crane lifting hook is abnormal or not can be judged by the second neural network model.

Similar to the first neural network model, the input data of the second neural network model includes inclination change information, swing change information, wind direction information and wind speed information, the output data is a label (binary label) whether an abnormality exists, and the whole input parameters and output are simple, so that the neural network can be realized by adopting a neural network with a simple structure such as a BP neural network and a convolutional neural network CNN, and the neural network can be composed of an input layer, a hidden layer and an output layer, and the purpose of the embodiment of the application can be realized without complex design, so that the implementation difficulty is reduced, and a more accurate judgment result is obtained. The BP neural network and the convolutional neural network CNN are both mature neural network models, and those skilled in the art can refer to the prior art and combine actual requirements to flexibly construct the first neural network model to achieve the purpose of the embodiment of the present application.

Through the embodiment, the second neural network model can be utilized to accurately judge whether the lifting state of the tower crane lifting hook is abnormal or not, the influence of wind power on the abnormal unhooking is considered, the neural network model is utilized to judge, the accuracy is high, and whether the lifting state of the tower crane lifting hook is abnormal or not can be judged more accurately.

On the basis of any of the above embodiments, in another modified embodiment, the sensing internet of things system for sensing the abnormal lifting state of the intelligent tower crane may further include: the alarm device is arranged on the tower crane lifting hook;

the alarm device is connected with the controller, and the controller is detecting when the lifting state of the tower crane lifting hook is abnormal, the controller broadcasts abnormal alarm information through the alarm device.

On the basis of any of the above embodiments, in some modified embodiments, the sensing internet of things system for sensing the abnormal lifting state of the intelligent tower crane may further include: the device comprises a lifting hook, a lifting hook driving mechanism, a visual sensor and a sensor driving mechanism; wherein,

the lifting hook is connected with the lifting hook driving mechanism, the visual sensor is connected with the sensor driving mechanism, and the lifting hook driving mechanism, the sensor driving mechanism and the visual sensor are all connected with the controller;

the controller is passing through lifting hook drive mechanism control during the lifting hook motion, still pass through sensor drive mechanism control vision sensor follows the lifting hook motion, and control vision sensor orientation the regional visual sensing signal of gathering in lifting hook place, with the basis visual sensing signal with the gesture data comprehensive judgement that gesture sensor gathered whether the lifting state of tower crane lifting hook is unusual.

In addition, the controller, the vision sensor and the sensor driving mechanism may be connected in a wireless manner or in a wired manner, and in view of relatively poor stability of wireless signals, in some embodiments, a wired manner is preferably adopted, and the vision sensor and the sensor driving mechanism are connected with the controller by cables, specifically, the cables may be connected to a console on the ground along a boom and a standard section and connected with the controller on the console, so as to improve signal quality and stability and avoid sensing errors caused by signal problems.

Compared with the prior art, the intelligent tower crane provided by the embodiment of the application can be used for sensing the sensing internet of things system for sensing the abnormal lifting state of the intelligent tower crane through configuration, can further add a visual sensor and a sensor driving mechanism, and can control the visual sensor to follow the lifting hook movement through the sensor driving mechanism when the lifting hook moves, and can control the visual sensor to acquire visual sensing signals towards the area where the lifting hook is located so as to comprehensively judge whether the lifting state of the lifting hook of the tower crane is abnormal according to the visual sensing signals and the attitude data acquired by the attitude sensor, so that the visual sensor can follow the lifting hook movement and can acquire the visual sensing signals closely, and the personnel can automatically acquire the high-definition and accurate visual sensing signals without extra operation of the tower crane control personnel, whether the lifting state of the tower crane lifting hook is abnormal or not is comprehensively and accurately judged according to the visual sensing signals, so that the probability that workers are accidentally injured by goods is further reduced, and the safety accident rate is reduced.

In some variations of the embodiments of the present application, the hook driving mechanism includes a first trolley, the sensor driving mechanism includes a second trolley, and the first trolley and the second trolley are both disposed on the boom of the tower crane and move along the boom.

In addition, the first trolley and the second trolley can also adopt two sets of different amplitude-variable steel wire ropes to respectively carry out traction movement, so that the distance between the first trolley and the second trolley can be adjusted, the distance from the visual sensor to the lifting hook can be conveniently adjusted, and a better observation visual field can be obtained.

In addition, the first trolley and the second trolley need to adopt two sets of different lifting steel wire ropes to respectively pull the lifting hook and the visual sensor to lift, so that the visual sensor can be leveled with the lifting hook, can be higher than the lifting hook or lower than the lifting hook to carry out signal acquisition, and can be applied to various working conditions to obtain a better observation visual field.

Through setting up the independent drive vision sensor of second dolly, can be according to the nimble following relation of adjusting between vision sensor and the lifting hook of operating condition, for example, can adjust and keep a meter interval along the width of cloth direction between vision sensor and the lifting hook, keep a meter interval along direction of height, perhaps, adjust and keep a meter interval along the width of cloth direction between vision sensor and the lifting hook, keep parallelly (the interval is zero) etc. along direction of height to obtain the observation field of vision of preferred.

After the following relationship is determined, the controller can automatically control the visual sensor to follow the following relationship when controlling the lifting hook to move so as to keep the same observation visual field. In addition, the operator can also adjust the following relationship according to actual requirements, and the embodiment of the present application does not limit specific values thereof.

It should be noted that the following referred to in the embodiment of the present application means that the vision sensor and the lifting hook keep a certain distance and angle during the movement to obtain the same observation visual field, so as to determine whether the lifting state of the tower crane lifting hook is abnormal or not through image comparison and identification.

For example, taking a real-time picture shot by a pan-tilt camera as an example of a visual sensing signal, through image recognition, a lifting hook and a rope can be recognized, and whether an abnormality exists can be judged through the relative positions of the lifting hook and the rope in the pictures shot successively and the movement trend of the rope, for example, if the rope moves to a preset range at an outlet of the lifting hook and has a trend of continuously moving towards an unhooking direction, it is judged that an unhooking risk exists, that is, it is judged that the lifting state of the tower crane lifting hook is abnormal; otherwise, the unhooking risk can be judged, namely the lifting state of the tower crane lifting hook is judged to be abnormal. Among them, the image recognition technology is a mature technology in the prior art, and those skilled in the art can directly apply the prior art to the present application to achieve the purpose of the embodiments of the present application.

In other modified embodiments, the tower crane is provided with a variable amplitude sensor and a height sensor, the variable amplitude sensor is used for detecting variable amplitude position information of the lifting hook, and the height sensor is used for detecting height position information of the lifting hook;

and the controller controls the vision sensor to move along with the lifting hook according to the amplitude variation position information and the height position information of the lifting hook.

The amplitude-variable position information can comprise the horizontal distance from the lifting hook to the standard knot along the amplitude-variable direction (namely the horizontal direction of the cargo boom), the height position information can comprise the vertical distance from the lifting hook to the cargo boom along the vertical direction, and according to the amplitude-variable position information and the height position information, as the visual sensor and the lifting hook are also driven by the trolley and the rope, the amplitude-variable position information and the height position information of the position where the visual sensor is located can be determined according to the amplitude-variable position information and the height position information of the lifting hook and by combining the predetermined following relation, and the visual sensor is controlled to move to the location where the visual sensor is located according to the amplitude-variable position information and the height position information, so that the following movement with the lifting hook is realized.

Specifically, in some embodiments, the controller further determines a rough relative position relationship between the vision sensor and the hook according to the amplitude variation position information and the height position information of the hook, and coarsely adjusts the rotation direction of the vision sensor to the region where the hook is located according to the rough relative position relationship. Because the amplitude variation position information and the height position information of the lifting hook and the visual sensor are obtained when the lifting hook and the visual sensor move along, the visual sensor can be quickly and coarsely adjusted to the area where the lifting hook is located according to the existing data through the implementation mode.

In view of the fact that the hook is not necessarily located at a preferred position in the visual sensor field after coarse adjustment, and the visual sensor may swing in the air due to air disturbance and fail to accurately capture a desired image, in some modified embodiments, on the basis of the above embodiment, the controller further identifies the hook in the visual sensing signal acquired by the visual sensor after coarse adjustment of the visual sensor to the area where the hook is located, determines a fine relative position relationship between the visual sensor and the hook, and fine-adjusts the visual sensor according to the fine relative position relationship, so that the visual sensor after fine adjustment acquires a visual sensing signal that meets the desired requirement. In this embodiment, the image recognition technology provided by the prior art can be used to recognize the hook in the visual sensing signal, so as to determine the fine relative position relationship between the visual sensor and the hook, and the visual sensor is finely adjusted according to the fine relative position relationship, so that the visual sensor after fine adjustment acquires the visual sensing signal which meets the expectation, wherein the expectation can be that the hook is located in the middle of the picture of the visual sensing signal, or the hook and the lifted cargo are located in the middle of the picture of the visual sensing signal as a whole, and the embodiment of the application is not limited. Through this embodiment, can further on the basis of coarse adjustment just remember the vision sensing signal that accords with the expectation through the fine setting, improve vision sensing signal precision to whether utilize this vision sensing signal accurately to judge the rising state of tower crane lifting hook is unusual.

In any of the foregoing embodiments, the visual sensor may include a pan-tilt camera or a laser scanner, which may acquire an accurate visual sensing signal to determine whether the lifting state of the tower crane hook is abnormal by combining attitude data.

Specifically, if the lifting state of the tower crane lifting hook is comprehensively judged to be abnormal according to the attitude data and the visual sensing signal, the specific judgment mode may be as follows: if the lifting state of the tower crane lifting hook is judged to be abnormal by adopting any one of the attitude data and the visual sensing signal, the lifting state of the tower crane lifting hook is judged to be abnormal on the whole, and if not, the lifting state of the tower crane lifting hook is judged to be abnormal. Therefore, whether the lifting state of the tower crane lifting hook is abnormal or not is comprehensively and accurately judged by utilizing the attitude data and the visual sensing signals, and the accuracy is improved.

It can be easily understood that if the weight of the vision sensor is light, the vision sensor can swing along with air disturbance in high altitude to influence the shooting effect, therefore, in some change implementation modes, the vision sensor can be also configured with an attitude stabilizing controller to help the vision sensor stabilize the attitude in high altitude, reduce the shaking, improve the shooting effect and further improve the accuracy of the abnormal judgment of the lifting state of the tower crane lifting hook.

In addition, in order to further perfect the intellectuality and the unmanned of above-mentioned intelligent tower crane, the three-dimensional augmented reality video control device that the intelligence tower crane can also be used for intelligent tower crane to control through the configuration below realizes comprehensive monitoring and discernment to the job site operating mode, need not the tower crane driver and carries out high altitude construction just can realize the control to the intelligence tower crane according to this three-dimensional augmented reality video, reduces staff's participation to can effectively reduce the accident rate and avoid staff's injures and deaths, combine the example below to explain.

In some embodiments, the three-dimensional augmented reality video control device for intelligent tower crane control may include: a controller, a global camera, and a plurality of local cameras;

the global camera and the local camera are both connected with the controller;

the global camera is arranged on the intelligent tower crane boom downwards and is used for shooting a global image of a working scene of the intelligent tower crane and sending the global image to the controller;

the plurality of local cameras are uniformly distributed on the periphery of a lifting hook of the intelligent tower crane and used for shooting local images from different directions on the periphery of the lifting hook and sending the local images to the controller;

the controller generates a three-dimensional augmented reality video representing the real-time working scene of the intelligent tower crane according to the global image and the local image, and controls the intelligent tower crane to operate according to the three-dimensional augmented reality video.

Compared with the prior art, the intelligent tower crane provided by the embodiment of the application can be provided with the controller, the global camera and the plurality of local cameras by configuring the three-dimensional augmented reality video control device for controlling the intelligent tower crane; wherein the global camera and the local camera are both connected with the controller; the global camera is arranged on the intelligent tower crane boom downwards and is used for shooting a global image of a working scene of the intelligent tower crane and sending the global image to the controller; the plurality of local cameras are uniformly distributed on the periphery of a lifting hook of the intelligent tower crane and used for shooting local images from different directions on the periphery of the lifting hook and sending the local images to the controller; the controller generates a three-dimensional augmented reality video representing the real-time working scene of the intelligent tower crane according to the global image and the local image, and controls the intelligent tower crane to operate according to the three-dimensional augmented reality video. Therefore, real-time images of the working scene of the tower crane can be acquired by the aid of the global camera and the local camera, a three-dimensional augmented reality video is generated, comprehensive monitoring and recognition of working conditions of a construction site are achieved, a tower crane driver is not required to carry out high-altitude operation, control over an intelligent tower crane can be achieved according to the three-dimensional augmented reality video, staff participation is reduced, and accordingly accident rate can be effectively reduced, and casualties of workers can be avoided.

Regarding the installation manner of the local camera, in some modified implementation manners of the embodiment of the present application, the three-dimensional augmented reality video control device for smart tower crane control may further include: a multi-branch support frame;

the multi-branch supporting frame is installed on the shell of the lifting hook and is opened in an umbrella shape, and the local cameras are installed at the tail ends of the branches of the multi-branch supporting frame.

In some variations, the multi-branch scaffold may include a bottom fixed portion, a sleeve, a plurality of branches, and an adjustable portion movable up and down the sleeve;

the bottom fixing part is arranged on the shell of the lifting hook, and the sleeve is sleeved on a steel wire rope of the lifting hook;

each branch comprises a supporting rod and a pull rod, one end of the supporting rod is connected with the bottom fixing part, and the other end of the supporting rod is used for installing the local camera;

one end of the pull rod is connected with the adjustable part, and the other end of the pull rod is connected with the middle part of the supporting rod.

Through setting up above-mentioned many branches support frame, can install local camera around the lifting hook, make local camera can accompany the lifting hook and remove, obtain stable, clear shooting picture, help generating accurate three-dimensional augmented reality video.

It should be noted that, the above is only a simple schematic structure of the multi-branch supporting frame, and in practical applications, the structure of the multi-branch supporting frame may be modified according to actual requirements to obtain better implementation effects, which do not depart from the inventive concept of the present embodiment, and all of which are within the protection scope of the present application.

On the basis of the above embodiment, in some modified embodiments, the outer surface of the sleeve is provided with an external thread, the adjustable part comprises a gear bearing provided with an internal thread and a driving motor, and the external thread is matched with the internal thread;

the driving motor is meshed with the gear bearing through a gear, is electrically connected with the controller and is used for driving the gear bearing to rotate around the sleeve to move up and down under the control of the controller.

Through above-mentioned embodiment, can realize the electric drive of adjustable portion, can drive the pull rod motion when adjustable portion reciprocates, and then drive local camera and reciprocate and be close to or keep away from the lifting hook to realize the automatically controlled regulation of local camera, help the tower crane control personnel to combine the position of the convenient, nimble regulation local camera of actual scene in order to obtain comparatively ideal shooting effect, and then generate accurate three-dimensional augmented reality video.

In addition, in order to improve the ease of use of local camera, in some change implementation modes, local camera pass through the cloud platform install in each branch end of many branches support frame, through setting up the cloud platform, required image is gathered to the local camera of control that can be more nimble, on the one hand, can when the deviation appears in the shooting angle, correct the angle deviation through the local camera of cloud platform control to the required image of more accurate collection, on the other hand, can control local camera and carry out the shooting of cruising, gather the image in the wider range on every side, so that further carry out the three-dimensional reconstruction of full scene, improve intelligent level.

In view of the balance problem and the shielding problem caused by the surrounding arrangement of the plurality of local cameras, more than one local camera may be generally arranged, and in view of the fact that the system load and the implementation cost for generating the three-dimensional augmented reality video are increased due to the excessive number of the local cameras, it is preferable that the number of the local cameras is one or more, so that the implementation cost and the implementation effect are both considered, and a high input-output ratio is obtained.

It should be noted that, in the embodiment of the present application, a global camera and a local camera are combined to collect images, wherein the global camera can capture a global image of a more comprehensive construction scene, but due to a higher installation position, the defects of poor definition of objects at low positions in a shielding and captured image exist, so that the shielding problem is reduced by introducing the local camera arranged around the hook, the image at the shielding position can be collected, and due to the fact that the local camera moves along with the hook, the image with higher definition can be collected at a short distance, so that the global image and the local image are fused by matching the global camera and the local camera, and the comprehensive, clear and accurate image data can be obtained, thereby ensuring that the generated three-dimensional augmented reality video can more accurately restore the real situation of the construction field, the intelligent tower crane can realize accurate operation based on three-dimensional augmented reality video, and the intelligent level, the automation level and the operation accuracy of the intelligent tower crane are improved.

The controller and the local camera can be connected in a wireless mode or in a wired mode, considering that the stability of wireless signals is relatively poor, safety accidents are possibly caused by signal interruption and error, in some embodiments, the local camera and the controller are connected by cables in a preferable wired mode, specifically, the cables can be connected to a control platform on the ground along a crane boom and a standard section and connected with the controller on the control platform, so that the signal quality and the stability are improved, and the problem that the lifting state abnormity of a tower crane hook cannot be found in time due to signal problems is avoided, and further the safety accidents are caused. On this basis, above-mentioned a three-dimensional augmented reality video control device for intelligent tower crane is controlled can also include: the winder is arranged on the trolley for hanging the lifting hook; the local cameras are connected with the controller through cables, and the cables are stored and released through the winder. Through the embodiment, the wire winder can be used for keeping the wire in the tightening state, and the wire is prevented from loosening and shaking to influence the operation of other parts.

In some embodiments, the controller generates the three-dimensional augmented reality video representing the real-time working scene of the intelligent tower crane through three-dimensional reconstruction according to the global image and the local image.

For example, the controller determines, by using a dense reconstruction algorithm, position information of a three-dimensional point corresponding to each pixel point in a world coordinate system according to the camera position information of the global camera and the local camera and the pixel position information of each pixel point in the global image and the local image, and determines a three-dimensional augmented reality video of the real-time working scene of the intelligent tower crane according to a three-dimensional point cloud formed by the three-dimensional points. Three-dimensional reconstruction based on multiple images is a mature prior art, so the specific process is not described herein any more, and those skilled in the art can flexibly modify and implement the three-dimensional reconstruction based on the prior art.

In addition, a Building Information Modeling (BIM) tool may also be used to generate a three-dimensional augmented reality video based on the global image and the local image, which may also achieve the purpose of the embodiment of the present application and is also within the protection scope of the present application.

In addition, in order to further perfect the intellectuality and the unmanned of above-mentioned intelligent tower crane, the intelligent tower crane can also get the sensing thing networking equipment of putting motion detection through the following intelligent tower crane of being used for of configuration, realizes the automated inspection and the relative position calculation to lifting hook and goods, and then realizes the automation of lifting hook and gets the operation of putting, need not manual control and participation and can realize automatic hook and hang to effectively improve the automation of intelligent tower crane, intelligent level, reduce accident rate and avoid the staff casualties, the following combines the example to explain.

In some embodiments, the sensing internet of things equipment for intelligent tower crane picking and placing motion detection may include: a controller and a plurality of micro image sensors connected to the controller;

the plurality of miniature image sensors are all arranged on a lifting hook of the intelligent tower crane, at least one miniature image sensor is arranged on the inner side of a hook body of the lifting hook, and the plurality of miniature image sensors are respectively used for acquiring image information of a lifting part of goods to be loaded and unloaded at different positions of the lifting hook and sending the image information to the controller;

the controller is used for detecting the relative position information between the hoisting part and the lifting hook according to the image information and controlling the lifting hook to move according to the relative position information so as to take and place the goods to be loaded and unloaded.

Compared with the prior art, the intelligent tower crane provided by the embodiment of the application can be provided with the controller and the plurality of miniature image sensors connected with the controller by configuring the sensing internet of things equipment for detecting the taking and placing motion of the intelligent tower crane; the plurality of miniature image sensors are all arranged on a lifting hook of the intelligent tower crane, at least one miniature image sensor is arranged on the inner side of a hook body of the lifting hook, and the plurality of miniature image sensors are respectively used for acquiring image information of a lifting part of goods to be loaded and unloaded at different positions of the lifting hook and sending the image information to the controller; the controller is used for detecting the relative position information between the hoisting part and the lifting hook according to the image information and controlling the lifting hook to move according to the relative position information so as to take and place the goods to be loaded and unloaded. Thereby can realize calculating the automated inspection and the relative position of lifting hook and goods, help realizing that the automation of lifting hook is got and is put the operation, improve automation, the intelligent level of intelligent tower crane, reduce the occurence of failure rate and avoid the staff casualties.

The above-mentioned relative position information includes at least one kind of information such as a relative direction, a relative distance, a relative angle, etc., and the embodiment of the present application does not limit the specific content thereof, and those skilled in the art can flexibly select and use the information in combination with actual requirements.

In some variations of the embodiments of the present application, at least one of the plurality of micro image sensors is disposed on a side of the handle of the lifting hook facing an opening of the lifting hook, and is configured to collect image information outside the lifting hook before the lifting portion enters the inside of the lifting hook; the controller is used for detecting the relative position information outside the hook of the lifting part outside the hook of the lifting hook according to the image information outside the hook, and controlling the lifting hook to be close to the lifting part according to the relative position information outside the hook.

Through this embodiment, can gather the outer image information of hook through the miniature image sensor who sets up outside the hook, and then utilize this outer image information of hook to confirm that hoist and mount portion is in the outer relative position information of hook of lifting hook to can ensure that the controller can control the lifting hook accurately moves to hoist and mount portion position, need not manual control and participates in and can realize automatic hook and hang.

In some modifications of the embodiment of the present application, the micro image sensor disposed inside the hook body is configured to acquire image information inside the hook of the hoisting part after the hoisting part enters the hook of the lifting hook;

the controller is used for detecting the relative position information in the hook after the hoisting part enters the hook according to the image information in the hook, and controlling the hoisting hook to hook the hoisting part according to the relative position information in the hook.

Through this embodiment, can gather the interior image information of hook through the miniature image sensor who sets up in the hook, and then utilize this interior image information of hook to confirm hoist and mount portion and be in relative position information in the hook in the lifting hook to can ensure that the controller can control the lifting hook fine setting makes hoist and mount portion accurately fall into the lifting hook, need not manual control and participates in and can realize automatic hook and hang.

For example, 4 miniature image sensors can be arranged on the lifting hook, wherein the miniature image sensors A and B are arranged outside the hook and used for collecting image information outside the hook, and the miniature image sensors C and D are arranged in the hook and used for collecting image information in the hook, so that the comprehensive monitoring of the working conditions inside and outside the lifting hook is realized.

In some variations of the embodiments of the present application, the controller is further configured to detect whether there is a risk of unhooking the cargo to be loaded or unloaded based on the relative position information in the hook after the cargo to be loaded or unloaded is lifted. With reference to the above example, the image information in the hook acquired by the miniature image sensor C disposed with the top end of the hook in the hook facing downward can be used to accurately determine whether the hoisting part is located in a safe area (for example, a preset range of the hook bottom is a safe area), if so, the hoisting can be performed, and if so, the situation that the hoisting part is in a safe area indicates that there is a risk of unhooking exists, and the position of the hook needs to be readjusted until the safety is ensured, and then the hoisting is performed.

In some modification embodiments of the embodiment of the present application, a transparent protection cover is disposed on an information acquisition end surface of the miniature image sensor, and the transparent protection cover is used for protecting the miniature image sensor from being polluted and/or damaged by impact of the hoisting part. The transparent protection cover can be realized by adopting glass or transparent acrylic, and the specific material of the transparent protection cover is not limited in the examples of the application. Consider that the building site environment is comparatively abominable, the dust is more, and the lifting hook collides with hoist and mount portion easily during hoist and mount, through this embodiment, can effectively protect miniature image sensor is by pollution such as dust, rainwater, and effectively protects miniature image sensor quilt hoist and mount portion striking damage.

When considering that the striking dynamics is great, transparent safety cover such as glass or ya keli is probably smashed and then damages miniature image sensor, consequently, in some modified implementation modes of this application embodiment, be provided with a plurality of recesses on the lifting hook, miniature image sensor imbeds in the recess, just the surface of transparent safety cover flushes or is less than the upper surface of recess. Through in embedding recess miniature image sensor and transparent safety cover, even hoist and mount portion and lifting hook take place the striking, the impact force that the striking produced also bears by the lifting hook body, and can not damage miniature image sensor to can effectively improve miniature image sensor's life.

In addition to any of the above embodiments, in some modified embodiments, the hoisting part of the cargo to be loaded and unloaded is provided with a preset pattern different from other parts;

the controller is used for identifying the hoisting part by detecting the preset pattern in the image information.

Wherein, above-mentioned pattern of predetermineeing can adopt the spray gun to spray in hoist and mount portion, also can attach in hoist and mount portion in the form of sticker, perhaps will predetermine the pattern and locate on the signboard, pass through anchor clamps centre gripping again with this signboard in hoist and mount portion, this application embodiment does not limit its concrete implementation, the purpose of this application embodiment can all be realized to above-mentioned mode and combination, all should be within the scope of protection of this application.

Since the predetermined pattern is distinguished from other portions, the predetermined pattern can be detected by pattern matching recognition in the image information, and the hanger can be recognized in the image information. The pattern-based image recognition technology is a relatively mature technology at present, and therefore, the detailed description is omitted here, and a person skilled in the art can adopt any pattern-based image recognition technology disclosed in the prior art to achieve the purpose of the embodiments of the present application, which should be within the scope of the present application.

Through this embodiment, can utilize and predetermine the pattern and realize the differentiation sign to hoisting portion, help improving the controller and discern the rate of accuracy and the efficiency of hoisting portion, and then improve intelligent level and the security of intelligent tower crane.

In addition, since one of the purposes of the embodiments of the present application is to identify the relative position information between the hoisting part and the hook, in order to obtain the depth information and further determine the relative position information of the three-dimensional space, in some embodiments, the above-mentioned micro image sensor includes a binocular camera, and the controller is specifically configured to calculate the relative position information between the hoisting part and the hook by using a binocular camera ranging algorithm.

The distance measurement algorithm based on the binocular camera is a relatively mature technology at present, and therefore is not described herein any more, and a person skilled in the art can adopt any binocular camera distance measurement algorithm disclosed in the prior art to achieve the purpose of the embodiment of the present application, and all the algorithms should be within the protection scope of the present application.

Through this embodiment, can utilize two mesh cameras and the range finding algorithm that corresponds thereof to accurately calculate the relative position information between hoist and mount portion and the lifting hook, and then accurately control the lifting hook motion and get in order to realize automatic getting and put, can effectively improve the lifting hook and get the precision and the efficiency of putting the motion.

It should be noted that the micro image sensor may be implemented by a CCD sensor or a CMOS sensor, which can achieve the purpose of the embodiments of the present application, and is not limited herein.

In addition, under considering the condition of miniature image sensor embedding recess, wireless communication signal can receive the shielding of lifting hook main part metallic structure and unable effective transmission, consequently, in order to improve the security of intelligent tower crane, in some embodiments, a sensing thing networking equipment for motion detection is got to intelligence tower crane, still includes: the winder is arranged on the trolley for hanging the lifting hook;

the miniature image sensors are connected with the controller through cables, and the cables are wound and unwound through the winder.

Specifically, the cable can be connected to the console on ground along jib loading boom, standard festival to be connected with the controller of controlling on the platform, thereby improve signal quality and stability, avoid leading to the incident because of the signal problem. Above-mentioned winder can keep the cable to be in the state of tightening up, avoids the cable slack to rock and influence other part operations, improves the security of intelligent tower crane.

In addition, the controller can be realized by a computer host, a microcontroller, a Programmable Logic Controller (PLC) and the like, and the lifting hook can be realized by any automatic lifting hook provided by the prior art, and the embodiment of the application is not limited.

In addition, in order to further perfect the intellectuality and the unmanned of above-mentioned intelligent tower crane, the intelligent tower crane can also be used for the tower crane to maintain the intelligent auxiliary robot who maintains the maintenance through the configuration below, realize maintaining the automation of maintenance point and patrol and examine, improve the timeliness of maintaining the maintenance, can shoot the video of artifical maintenance and confirm simultaneously, and the automatic maintenance record that maintains that generates, help tracing back behind the accident, in addition, through shooting artifical maintenance and maintenance video, can encourage maintenance personnel to carefully, maintain the maintenance in charge, reduce and maintain the problem emergence that the maintenance is not in place, thereby improve intelligent level and the security of intelligent tower crane on the whole, the following description of combining the example.

In some embodiments, the intelligent auxiliary robot for tower crane maintenance may include: a control device, a drive device and an image pickup device;

the driving device and the camera device are both connected with the control device;

the driving device is used for driving the intelligent auxiliary robot to move along a maintenance path preset on the intelligent tower crane;

the control device is used for controlling the driving device to drive the intelligent auxiliary robot to patrol and maintain the maintenance points according to a preset maintenance schedule;

the camera device is used for shooting a manual maintenance video and documentations when the camera device stays at the maintenance point needing manual maintenance;

and the control device is also used for generating maintenance records aiming at each maintenance point on the maintenance schedule after the maintenance is finished.

Compared with the prior art, the intelligent auxiliary robot for tower crane maintenance provided by the embodiment of this application, through setting up controlling means, drive arrangement and camera device, wherein, drive arrangement with camera device all with controlling means connects, drive arrangement is used for driving intelligent auxiliary robot removes along the maintenance route of predetermineeing on the intelligent tower crane, controlling means is used for controlling according to predetermined maintenance schedule drive intelligent auxiliary robot patrols and examines and maintains the maintenance point, camera device is used for stopping need the manual maintenance when maintaining the maintenance point, shoots the manual maintenance video and demonstrates, controlling means still is used for after the maintenance is accomplished, aims at each maintenance point of maintaining on the maintenance schedule generates the maintenance record. Thereby can utilize intelligent auxiliary robot to maintain the automation of maintenance point and patrol and examine, improve the promptness of maintaining the maintenance, can shoot artifical maintenance video and certificate simultaneously, and the automatic maintenance record that generates helps going back after the accident, in addition, through shooting artifical maintenance video, can encourage maintenance personnel to be serious, maintain the maintenance in charge, reduce the problem emergence of maintaining the maintenance not in place, thereby improve intelligent level and the security of intelligent tower crane on the whole.

The control device may be implemented by a computer host, a microcontroller, a programmable logic controller PLC, and the like, and the image pickup device may be implemented by any camera provided in the prior art, which is not limited in the embodiment of the present application.

In some modification implementation manners of the embodiment of the present application, the intelligent auxiliary robot for tower crane maintenance further includes: the electronic tag reader is connected with the control device;

the maintenance points are provided with electronic tags, and the electronic tags are used for distinguishing and identifying different maintenance points;

the electronic tag reader is used for detecting an electronic tag in the moving process of the intelligent auxiliary robot and sending tag information of the electronic tag to the control device when the electronic tag is detected;

the control device is also used for identifying the maintenance point according to the label information.

Through this embodiment, can utilize electronic tags to realize the sign to maintaining the maintenance point for intelligent auxiliary robot can be through reading this electronic tags discernment maintain the maintenance point, and then carry out the maintenance of pertinence to and accomplish and patrol and examine, avoid omitting simultaneously and maintain the maintenance point.

In some modification implementation manners of the embodiment of the present application, the intelligent auxiliary robot for tower crane maintenance further includes: the display device is connected with the control device;

the control device is also used for controlling the display device to play the maintenance guide information of the current maintenance point when the display device stays at the maintenance point needing manual maintenance.

By playing the maintenance guidance information, maintenance personnel can be guided to finish maintenance operation correctly and efficiently, and the problems of maintenance errors or inadequate maintenance and the like are avoided.

In some modification embodiments of the embodiment of the application, a steel chain is arranged along a preset overhaul path on the intelligent tower crane;

the driving device comprises a gear structure coupled with the steel chain and is used for driving the intelligent auxiliary robot to move along the steel chain.

Because to intelligent tower crane, there is a large amount of maintenance routes to need the climbing, consequently, through this embodiment, can make intelligent auxiliary robot can follow the maintenance route climbing reaches the maintenance point of each position, ensures the safety of this scheme, implements smoothly.

In some modification implementation manners of the embodiment of the present application, the intelligent auxiliary robot for tower crane maintenance further includes: a housing;

the control device, the driving device and the camera device are fixedly installed through the shell;

the surface of casing is provided with gyro wheel and rubidium indisputable boron magnet, ru indisputable boron magnet be used for with intelligent auxiliary robot inhales on intelligent tower crane, the gyro wheel be used for with intelligent tower crane contact so that intelligent auxiliary robot can follow the intelligence tower crane removes.

Through this embodiment, can ensure that intelligent auxiliary robot can adsorb and move on the intelligent tower crane tower body, avoid intelligent auxiliary robot in the emergence of the circumstances such as high altitude along with the wind swing, improve operation stability and security.

In some modification implementation manners of the embodiment of the present application, the intelligent auxiliary robot for tower crane maintenance further includes: a communication device;

the communication device is connected with the control device;

the control device is also used for sending the maintenance schedule of the polling to a terminal carried by a maintenance worker through the communication device before the polling so that the maintenance worker can patrol and examine maintenance points along with the intelligent auxiliary robot according to the maintenance schedule.

Through the embodiment, the maintenance personnel can be effectively reminded to maintain in time, and the maintenance personnel can know the maintenance content by sending the maintenance schedule, so that the maintenance efficiency is improved, and the condition that the maintenance is not in time is avoided.

In some modifications of the embodiment of the application, the control device is further configured to send warning information indicating that maintenance is being performed to the controller of the smart tower crane through the communication device during the period of polling, so that the controller avoids performing construction work during the maintenance.

Through this embodiment, can avoid intelligent tower crane construction operation during patrolling and examining, improve the security, avoid the construction to go on simultaneously with the maintenance and the incident emergence that leads to.

In some modification implementation manners of the embodiment of the application, the control device is further configured to control the camera device to collect a face image of a maintenance person when the camera device stays at the maintenance point where manual maintenance is needed, identify and authenticate the maintenance person according to the face image, and play warning information indicating authentication failure to the maintenance person after authentication failure.

Through the embodiment, the identity authentication of the maintenance personnel can be realized, the problems of error and not-in-place maintenance and the like caused by the situations that the maintenance personnel replace operation, illegal personnel (personnel without maintenance qualification) carry out maintenance and the like are avoided, and the maintenance quality and the arrival rate are improved.

In addition, in order to further improve the intellectualization and the unmanned of the intelligent tower crane, the intelligent tower crane can automatically identify materials by configuring the following tower crane material classification and identification system based on image analysis, and further automatically select a reasonable mode for loading and unloading aiming at different types of materials, so that the occurrence of loading and unloading accidents is reduced, the unmanned and intelligent development of the tower crane is promoted, and the description is combined with an example below.

In some embodiments, the image analysis-based tower crane material classification and identification system may include:

the system comprises an image group acquisition module, a data acquisition module and a data processing module, wherein the image group acquisition module is used for acquiring a material image group acquired by a camera group arranged on the intelligent tower crane, the camera group comprises a plurality of cameras with different shooting angles, and the material image group comprises material images acquired by each camera aiming at materials;

the attribute information determining module is used for determining attribute information of the material according to the material image group, wherein the attribute information comprises shape information, size information and texture information;

and the material type matching module is used for matching the type of the material from a tower crane material database according to the attribute information of the material, wherein the tower crane material database stores the attribute information of different tower crane materials in advance.

Compared with the prior art, the tower crane material classification and identification system based on image analysis provided by the embodiment of the application comprises a material image group acquired by acquiring the camera group arranged on the intelligent tower crane, wherein the camera group comprises a plurality of cameras with different shooting angles, the material image group comprises every camera aiming at the material image acquired by the material, and according to the material image group, the attribute information of the material is determined, the attribute information comprises shape information, size information and texture information, and according to the attribute information of the material, the material type is obtained by matching the material in the tower crane material database, wherein the tower crane material database stores the attribute information of different tower crane materials in advance, and as the material type loaded and unloaded by the tower crane is clear and distinct, the system only needs to pertinently extract the shape, size and texture of the material, The intelligent tower crane has the advantages that the size, the texture and other attribute information, namely the categories of the materials can be quickly and accurately identified through database matching, the intelligent tower crane is facilitated to automatically select a reasonable mode for loading and unloading different categories of materials, the loading and unloading accidents are reduced, and the unmanned and intelligent development of the tower crane is promoted.

Wherein, the tower crane material classification identification system based on image analysis that this application embodiment provided can be realized by the controller of intelligent tower crane, realizes the automatic classification discernment to the tower crane material by the controller to further load and unload to the material automatic selection reasonable mode of different classes, for example, select suitable lifting hook to hoist, select different hoist and mount speed etc. to glass and steel, thereby reduce the emergence of loading and unloading accident, promote the unmanned, intelligent development of tower crane.

In some variations of the embodiments of the present application, the attribute information determination module includes:

the initial image query unit is used for querying an initial image corresponding to attitude information from an initial image database according to the attitude information of each camera for acquiring the material image, wherein the attitude information comprises shooting position information and shooting angle information of the camera, the initial image database stores the initial image acquired by each camera corresponding to the attitude information, and the initial image is acquired before the material enters the field;

the image comparison unit is used for comparing each material image in the material image group with the initial image which is acquired by the camera for acquiring the material image in advance under the same posture, and identifying a material main body in each material image;

and the attribute information determining unit is used for determining the attribute information of the material according to the material main body in each material image obtained by identification.

In addition to the above-described embodiments, in some modified embodiments of the present application, for the extraction of the shape information and the size information, the attribute information determination unit includes:

a coordinate conversion relation determining subunit, configured to determine a coordinate conversion relation between a pixel coordinate system corresponding to each camera and a world coordinate system;

the coordinate conversion subunit is used for converting the pixel coordinates of the material main body in each material image into world coordinates in a world coordinate system according to the coordinate conversion relation;

and the shape and size determining subunit is used for determining the shape information and the size information of the material according to the world coordinates.

The determination of the coordinate conversion relationship of the camera and the conversion of the pixel coordinate into the world coordinate are already mature technologies in the prior art, and therefore, the detailed process is not described herein, and a person skilled in the art can refer to the prior art to flexibly change and implement the coordinate conversion relationship.

In addition to the foregoing embodiments, in some modifications of the embodiments of the present application with respect to the extraction of texture information, the attribute information determination unit includes:

and the texture determining subunit is used for identifying the texture information of the material body in each material image by adopting a texture identification algorithm.

The texture recognition algorithm may be implemented by any texture feature extraction algorithm provided by the prior art, for example, a Local Binary Pattern (LBP) algorithm, an OpenCV-based texture recognition algorithm, and the like, which may all achieve the purpose of the embodiments of the present application.

In practical application, materials commonly used for hoisting of the tower crane are mainly raw materials for building construction, such as steel bars, wood ridges, concrete, steel pipes, glass and the like, and the shapes, the sizes and the textures of the materials are greatly different, so that only attribute information, such as the shapes, the sizes, the textures and the like of the materials, is required to be pertinently extracted, the types of the materials can be quickly and accurately identified through database matching, the intelligent tower crane can be used for automatically selecting reasonable modes for loading and unloading aiming at different types of materials, loading and unloading accidents are reduced, and unmanned and intelligent development of the tower crane is promoted.

In some variation implementations of the embodiments of the present application, the camera includes a binocular camera, and the material image acquired by the binocular camera carries depth-of-field information;

the attribute information determination module includes:

and the depth-of-field-based determining unit is used for determining the attribute information of the material according to the depth-of-field information carried by each material image in the material image group.

In addition, in order to further improve the intellectualization and the unmanned of the intelligent tower crane, the intelligent tower crane can also be configured with a following intelligent tower crane maintenance management system based on a fault identification model to predict the fault occurrence rate according to the daily instruction execution arrival rate of the intelligent tower crane, and output a corresponding maintenance strategy when the alarm value is exceeded, so that the components which are possibly in fault are maintained and maintained at any time and pertinently before the fault occurs, the fault is eliminated in a bud state, the occurrence of the fault can be effectively reduced, and the intellectualization level, the automation level and the safety of the intelligent tower crane are improved, which is described in combination with an example below.

In some embodiments, the intelligent tower crane maintenance management system based on the fault identification model may include:

the execution information acquisition module is used for acquiring execution monitoring information corresponding to a control instruction sent by the intelligent tower crane controller in real time;

the arrival rate calculation module is used for calculating the instruction execution arrival rate of the control instruction according to the execution monitoring information;

the fault recognition module is used for inputting the control instruction and the instruction execution arrival rate thereof into a pre-trained fault recognition model and obtaining the fault occurrence rate predicted by the fault recognition model;

and the maintenance strategy output module is used for inquiring and outputting the maintenance strategy of the executing mechanism corresponding to the control instruction if the fault occurrence rate is greater than a preset warning value.

Compared with the prior art, the intelligent tower crane maintenance management system based on the fault identification model provided by the embodiment of the application obtains the execution monitoring information corresponding to the control command sent by the intelligent tower crane controller in real time, then calculates the command execution arrival rate of the control command according to the execution monitoring information, inputs the control command and the command execution arrival rate thereof into the pre-trained fault identification model, and obtains the fault occurrence rate predicted by the fault identification model, if the fault occurrence rate is greater than the preset warning value, queries the maintenance strategy of the execution mechanism corresponding to the control command and outputs the strategy, and because most faults are caused by large product, before the fault occurs, the fault often has slight abnormal performance, such as the command execution is not in place, the command execution arrival rate is low, and the like, therefore, the fault occurrence rate can be predicted according to the daily command execution arrival rate of the intelligent tower crane, and when the warning value is exceeded, a corresponding maintenance strategy is output, and then parts which possibly break down are maintained and maintained at any time and pertinently before the faults happen, so that the faults are eliminated in a sprouting state, the faults can be effectively reduced, and the intelligence level, the automation level and the safety of the intelligent tower crane are improved.

Wherein, the maintenance strategy of inquiring of this application embodiment can be exported display device such as display screen, so that the tower crane control personnel maintain with the manual mode according to this maintenance strategy, in addition, the maintenance strategy of inquiring also can be exported the maintenance robot (be used for the tower crane to maintain the intelligent auxiliary robot of maintenance), utilize this maintenance robot to realize the automatic maintenance to intelligent tower crane, realize the automation of intelligent tower crane, unmanned, the intelligent maintenance, promote the tower crane unmanned, intelligent development, the purpose of this application embodiment can all be realized to the above-mentioned mode, all should be within the protection scope of this application.

The execution monitoring information comprises action information of an execution mechanism corresponding to the control instruction, which is monitored from the sending of the control instruction, and the action information comprises at least one of action amplitude, action time and action speed. The action information can be used for judging the instruction execution condition of the execution mechanism and calculating the instruction execution bit rate of the execution mechanism. The above-mentioned actuating mechanism includes hoisting mechanism, rotation mechanism and luffing mechanism, can monitor its action information to the corresponding sensor of above-mentioned actuating mechanism installation on the intelligent tower crane, for example, adopt image recognition analysis's mode to monitor its action information through installing the camera, if, monitor its action information through installing sensors such as laser range finder, accelerometer, gyroscope, this application embodiment does not restrict its concrete implementation, and the collection of above-mentioned action information can be realized to the arbitrary mode that technical staff in the art provided to adopt prior art.

After the action information is collected, it may be determined that the instruction execution arrival rate of the corresponding control instruction may be determined, in this embodiment of the present application, the instruction execution arrival rate may be calculated by an execution duration, and in some modified embodiments of this embodiment of the present application, the arrival rate calculation module includes:

the execution duration calculation unit is used for determining the actual execution in-place duration from the control instruction issuing to the control instruction execution condition according with the preset in-place condition according to the execution monitoring information;

and the arrival rate calculating unit is used for determining the instruction execution arrival rate of the control instruction according to the ratio of the actual execution arrival time length to the standard execution arrival time length corresponding to the control instruction.

For example, the control instruction is to lift the hook at a speed of 1 m/s, the standard execution in-place time length of the hook accelerated from static state to 1 m/s is 2 seconds, and if the actual execution in-place time length is 4 seconds, the corresponding instruction execution in-place rate is 50% for 2 seconds/4 seconds; for another example, the control instruction is to control the braking of the luffing trolley, the standard in-place execution time length is 0.5 second, and if the actual in-place execution time length is 0.5 second, the corresponding instruction execution in-place rate is 0.5 second/0.5 second, which is equal to 100%. The above are exemplary illustrations, and those skilled in the art can flexibly set the specific value of the standard execution in-place time length and the specific calculation manner of the instruction execution in-place rate according to the actual situation, which are all within the protection scope of the present application.

After calculating the instruction execution arrival rate, a pre-trained fault identification model can be input to predict the fault occurrence rate, and it should be noted that, in some modification embodiments of the embodiment of the present application, the intelligent tower crane maintenance management system based on the fault identification model further includes:

the historical information acquisition module is used for acquiring all historical control instructions of the intelligent tower crane before the fault occurs and corresponding historical execution monitoring information;

the historical arrival rate calculation module is used for calculating the historical execution arrival rate corresponding to the historical control instruction according to the historical control instruction and the historical execution monitoring information;

the historical arrival rate sorting module is used for sorting the historical execution arrival rates according to time to obtain a historical execution arrival rate set;

the fault rate assignment module is used for assigning the historical execution arrival rates in the historical execution arrival rate set according to the distance fault occurrence time, wherein the shorter the distance fault occurrence time is, the higher the assigned fault occurrence rate is;

the learning sample generation module is used for generating machine learning samples, wherein each machine learning sample comprises one historical control instruction and corresponding historical execution monitoring information and fault occurrence rate;

and the model training module is used for training a fault recognition model according to the machine learning sample to obtain a pre-trained fault recognition model.

In the embodiment, a large amount of historical data is collected to calculate the historical execution achievement rate (i.e. the historical instruction execution achievement rate) and sort the historical execution achievement rate according to the issuing time of the control instruction, then, for each actually occurring fault, the execution mechanism and the control instruction related to the fault are identified through fault detection, then, according to the time from the occurrence of the fault, the fault occurrence rate assignment is performed on the historical execution achievement rate corresponding to the control instruction related to the fault, the value of the assignment is between 0 and 1, the higher the value of the assignment is the closer the fault is, for example, the fault occurrence rate assignment corresponding to the historical execution achievement rate in one day from the fault is 0.9, the fault occurrence rate assignment corresponding to the historical execution achievement rate in 7 days from the fault is 0.5, and the like, the specific assignment mode is not limited in the embodiment of the present application, for example, the period from the historical execution achievement rate being lower than 100% to the occurrence of the fault can also be regarded as a fault period, the duration is L, and the time interval from the historical execution arrival rate corresponding to a certain control instruction to the occurrence of a fault is a, then the fault occurrence rate corresponding to the historical execution arrival rate can be calculated by using the following formula:

m₁＝1-a/L

in the above formula, m₁And indicating the fault occurrence rate, a indicating the time interval from the historical execution to the bit rate corresponding to the control instruction to the fault occurrence, and L indicating the time interval from the historical execution to the bit rate lower than 100% to the fault occurrence.

In addition, the above assignment may also be performed in combination with a specific historical execution achievement rate value, for example, the historical execution achievement rate when a fault occurs is b, and the historical execution achievement rate when an execution mechanism operates well is c, then the fault occurrence rate corresponding to a certain historical execution achievement rate d may be calculated by using the following formula:

in the above formula, m₂The failure occurrence rate corresponding to the historical execution achievement rate d is shown, b shows the historical execution achievement rate when the failure occurs, and c shows the historical execution achievement rate when the execution mechanism runs well.

In addition, the failure occurrence rate may be calculated by summing the time factor and the historical execution arrival rate value factor, for example, m may be calculated based on the above₁And m₂Further determines the failure occurrence rate m, as follows:

m＝m₁×m₂

in the above formula, m is the total failure occurrence rate, m₁Indicating the assignment according to the time of the distance faultFailure rate of value, m₂The fault occurrence rate that the assignment is carried out according to the specific historical execution arrival rate numerical value is shown, through the embodiment, the total fault occurrence rate change range obtained after multiplying the two is larger, the difference of the fault occurrence rate can be shown numerically more obviously, the prediction accuracy of the fault is higher, the sensitivity and the accuracy of the fault recognition model trained after assignment are higher, and the integral implementation accuracy of the scheme is improved.

In addition, the fault recognition model is a model for predicting the fault occurrence rate according to the actual instruction execution arrival rate, and can be obtained by training a machine learning sample generated according to historical data.

The input data of the fault identification model comprises control instruction codes and instruction execution arrival rates thereof, the output data is fault occurrence rate, and the whole input parameters and output are simple, so that the fault identification model can be realized by adopting neural networks with simple structures such as a BP (back propagation) neural network and a Convolutional Neural Network (CNN), and can be composed of an input layer, a hidden layer and an output layer, the purpose of the embodiment of the application can be realized without complex design, the implementation difficulty is reduced, and a more accurate judgment result is obtained. The BP neural network and the convolutional neural network CNN are both mature neural network models, and those skilled in the art can refer to the prior art and combine actual requirements to flexibly construct the fault identification model to achieve the purpose of the embodiment of the present application, which are all within the protection scope of the present application.

After the failure occurrence rate is obtained through prediction, a corresponding maintenance strategy can be further determined, in some modification implementation manners of the embodiment of the application, the intelligent tower crane maintenance management system based on the failure recognition model further includes:

the strategy determining module is used for determining an actuating mechanism corresponding to the control instruction and a maintenance strategy corresponding to the actuating mechanism aiming at various control instructions sent by the controller;

the mapping table generating module is used for generating a maintenance strategy mapping table according to various control instructions and corresponding execution mechanisms and maintenance strategies;

the maintenance strategy output module comprises:

and the mapping table query module is used for querying and outputting the actuating mechanism and the maintenance strategy corresponding to the control command from the maintenance strategy mapping table.

By the embodiment, corresponding maintenance strategies can be set in advance for various situations, the mapping table is established for storage, and when the fault occurrence rate is detected to be greater than the preset warning value, the executing mechanism and the maintenance strategies corresponding to the control command can be inquired from the mapping table and output, so that targeted maintenance can be performed on the executing mechanism.

It should be noted that, the maintenance strategy may be flexibly set by a technician in combination with an actual situation, for example, a failure occurrence rate corresponding to a control instruction for controlling the brake of the luffing trolley exceeds a corresponding warning value, and the maintenance strategy is to perform maintenance on a brake system of the trolley; the fault occurrence rate corresponding to a control instruction for controlling the starting of the amplitude-variable trolley exceeds a corresponding warning value, and the maintenance strategy is to perform maintenance aiming at a driving system of the trolley; the embodiments of the present application do not limit the specific content of the maintenance strategy, and when it is used in the solution of the present application, it should be within the protection scope of the present application.

In addition, in order to further improve the intellectualization and the unmanned degree of the intelligent tower crane, the intelligent tower crane can also realize the unmanned degree, the intellectualization and the automation of the selection of a lifting appliance by configuring the following tower crane lifting appliance selection device based on the three-dimensional material form model simulation, so that the intellectualization level, the automation level and the safety of the intelligent tower crane are improved, and the description is combined with the examples below.

In some embodiments, the intelligent tower crane material positioning auxiliary device based on internet of things communication can include:

the system comprises a material image acquisition module, a material image acquisition module and a control module, wherein the material image acquisition module is used for acquiring a material image group acquired by a camera group arranged on an intelligent tower crane, the camera group comprises a plurality of cameras arranged at different positions of the intelligent tower crane, and the material image group comprises material images acquired by each camera aiming at materials;

the three-dimensional reconstruction module is used for performing three-dimensional reconstruction on the material according to the material image group to obtain a three-dimensional simulation material;

the lifting appliance matching module is used for matching a plurality of alternative three-dimensional simulation lifting appliances with the three-dimensional simulation material in sequence and selecting the three-dimensional simulation lifting appliance with the highest matching degree;

and the lifting appliance selecting module is used for controlling the intelligent tower crane to select a lifting appliance corresponding to the three-dimensional simulation lifting appliance from a lifting appliance pool.

Compared with the prior art, the tower crane lifting appliance selection device based on three-dimensional material form model simulation provided by the embodiment of the application acquires a material image group acquired by a camera group arranged on an intelligent tower crane, wherein the camera group comprises a plurality of cameras arranged at different positions of the intelligent tower crane, the material image group comprises material images acquired by each camera aiming at materials, then three-dimensional reconstruction is carried out on the materials according to the material image group to obtain three-dimensional simulation materials, then a plurality of alternative three-dimensional simulation lifting appliances are sequentially matched with the three-dimensional simulation materials, the three-dimensional simulation lifting appliance with the highest matching degree is selected, finally the intelligent tower crane is controlled to select the lifting appliance corresponding to the three-dimensional simulation lifting appliance from a lifting appliance pool, the three-dimensional simulation materials corresponding to the materials can be constructed through three-dimensional reconstruction, and the three-dimensional simulation lifting appliance is determined through simulation matching, then can directly, pertinence ground select suitable hoist from the hoist pond and hoist the material, can realize unmanned, intelligent and the automation that the hoist was selected, improve intelligent level, the automation level and the security of intelligent tower crane.

The tower crane lifting appliance selection method based on the three-dimensional material form model simulation can be realized by a controller of an intelligent tower crane, the controller can be realized by a computer host, a microcontroller, a Programmable Logic Controller (PLC) and the like, and the embodiment of the application is not limited.

In the embodiment of the present application, the three-dimensional reconstruction refers to establishing a mathematical model suitable for representation and processing by a computer for a three-dimensional object, which is a basis for processing, operating and analyzing the properties of the three-dimensional object in a computer environment, and is also a key technology for establishing a virtual reality expressing an objective world in the computer. In computer vision, three-dimensional reconstruction refers to a process of reconstructing three-dimensional information from a single-view or multi-view image, and may be implemented by calibrating a camera, i.e., calculating a relationship between a pixel coordinate system of the camera and a world coordinate system, and then reconstructing three-dimensional information using information in a plurality of two-dimensional images, for example, the following three-dimensional reconstruction process based on two-dimensional images is illustrated in (1) to (5):

(1) image acquisition: prior to image processing, a two-dimensional image of a three-dimensional object (e.g., an image of a material in the present application) is acquired by an imaging device (e.g., a camera).

(2) Calibrating a camera: an effective imaging model is established through camera calibration, and internal and external parameters of a camera are solved, so that three-dimensional point coordinates in a space can be obtained by combining the matching result of the image, and the purpose of three-dimensional reconstruction is achieved.

(3) Feature extraction: the features mainly include feature points, feature lines, and regions. In most cases, feature points are used as matching primitives, and the form of extracting the feature points is closely related to the matching strategy. The feature point extraction algorithm may include, but is not limited to: directional derivative based methods, image brightness contrast relationship based methods, mathematical morphology based methods, and the like.

(4) Stereo matching: stereo matching is to establish a corresponding relationship between different images according to the extracted features, that is, imaging points of the same physical space point in two different images are in one-to-one correspondence. Some factors in the scene, such as the illumination condition, noise interference, geometric distortion of the scene, surface physical characteristics, and camera characteristics, are considered in matching.

(5) Three-dimensional reconstruction: with a relatively accurate matching result, the three-dimensional scene information can be restored by combining the internal and external parameters calibrated by the camera. Because the three-dimensional reconstruction precision is influenced by factors such as matching precision, internal and external parameter errors of a camera and the like, the work of the previous steps is needed to be done firstly, so that the precision of each link is high, the error is small, and the three-dimensional reconstruction can be realized more accurately.

The three-dimensional reconstruction process based on the two-dimensional image is exemplarily described above, and those skilled in the art can refer to the exemplary description above, and implement flexible change of an actual scene to perform three-dimensional reconstruction according to the material image to obtain a three-dimensional simulation material, so as to achieve the purpose of the embodiment of the present application, which is further described below with reference to examples:

in some variations of embodiments of the present application, the three-dimensional reconstruction module includes:

the camera position determining unit is used for determining the camera position information corresponding to each material image in the material image group;

and the three-dimensional reconstruction unit is used for performing three-dimensional reconstruction according to the position information of the camera corresponding to each material image and the position information of the pixel point corresponding to the material in each material image to obtain the three-dimensional simulation material corresponding to the material.

The position information of the camera can be calculated in real time according to the installation position of the camera and the amplitude variation, rotation and lifting information of the intelligent tower crane, for example, the camera can comprise a global camera arranged on a crane arm of the intelligent tower crane and can be used for shooting a global image of a working scene of the intelligent tower crane, so that the position of a material can be preliminarily positioned according to the global image to determine a material image, and the position information can be calculated and determined according to the rotation information and the installation position of the tower crane; for another example, the camera may further include a local camera installed near the spreader, where the local camera is used to shoot the material only by way of example to obtain a material image with higher definition and accuracy, and the position information of the local camera may be calculated and determined according to the rotation information, amplitude variation information, lifting information, and installation position of the tower crane; the calculation of the camera position information can be realized according to the geometric relationship, and the details are not repeated here.

In addition to the above-described embodiments, in some modified embodiments, the three-dimensional reconstruction unit includes:

and the dense reconstruction subunit is used for determining the position information of the three-dimensional point corresponding to each pixel point in the world coordinate system by adopting a dense reconstruction algorithm according to the position information of the camera corresponding to each material image and the position information of the pixel point corresponding to the material in each material image, and determining the three-dimensional simulation material corresponding to the material according to the three-dimensional point cloud formed by the three-dimensional points.

The multi-View solid geometry is a dense reconstruction (MVS) algorithm, and aims to calculate three-dimensional points corresponding to each pixel point in an image one by one on the premise that the pose of a camera is known to obtain a dense three-dimensional point cloud on the surface of a scene object.

Through the embodiment, the three-dimensional reconstruction can be accurately and quickly realized, and the whole marking accuracy and marking efficiency are improved.

In some variations of embodiments of the present application, the spreader matching module comprises:

the lifting appliance matching unit is used for sequentially matching a plurality of alternative three-dimensional simulation lifting appliances with the three-dimensional simulation materials in BIM software of a building information model, and determining the matching degree according to the priority of the lifting appliances and the coupling degree of a lifting part, wherein different lifting appliances are preset with different priorities, and the coupling degree of the lifting part is determined according to the shape and size coupling information;

and the lifting appliance selecting unit is used for selecting the three-dimensional simulation lifting appliance with the highest matching degree from the plurality of three-dimensional simulation lifting appliances according to the matching degree.

In the implementation process, corresponding three-dimensional simulation lifting appliances can be preset in Building Information Model (BIM) software corresponding to each lifting appliance in a lifting appliance pool, attribute Information and priority Information are set for each three-dimensional simulation lifting appliance, after a three-dimensional simulation material is generated, the three-dimensional simulation lifting appliances can be sequentially matched with the three-dimensional simulation material in the BIM software, and then the matching degree of each three-dimensional simulation lifting appliance is determined.

It is easily understood that different hangers can be set with different priorities, for example, the safety of the hook is higher, and the priority is higher than that of the hanging tongs, the clamp, the hanging beam, etc., and those skilled in the art can flexibly set the priority of each hanger according to the actual requirement, which is not limited herein.

In addition, the coupling degree of the hoisting part (i.e. the contact part of the spreader and the material) can be determined according to the shape and size coupling information, for example, the coupling degree between the circle and the circle is greater than the coupling degree between the circle and the rectangle, the coupling degree between the small-sized spreader and the large-sized material cannot be coupled, i.e. is zero, and the like.

By the mode, the BIM software can be used for automatically selecting the appropriate three-dimensional simulation lifting appliance for the material, so that the corresponding lifting appliance can be selected in a targeted manner, and the accuracy and the efficiency are high.

In some modified embodiments of the embodiment of the application, a hanger pool is arranged for the intelligent tower crane, a plurality of different hangers are arranged in the hanger pool, and each hanger is arranged at a preset position in the hanger pool according to a corresponding hanger identifier;

the module is selected to hoist includes:

and the lifting appliance selecting module unit is used for controlling the intelligent tower crane to select a corresponding lifting appliance from a preset position corresponding to the lifting appliance identification in the lifting appliance pool according to the selected lifting appliance identification of the three-dimensional simulation lifting appliance with the highest matching degree.

This embodiment can set up the hoist sign to the hoist of difference to locate the assigned position in the hoist pond with the hoist, like this, after matching and confirming three-dimensional emulation hoist, can be according to the quick hoist that selects of hoist sign corresponds, improve the hoist and select accuracy and efficiency.

It should be noted that the lifting device according to the embodiments of the present application includes, but is not limited to, a lifting hook, a lifting clamp, a lifting beam, a clamp, a steel plate lifting device, a lifting device, a steel ingot lifting device, a vertical rolled steel lifting device, a C-shaped lifting device, a round steel lifting device, an electric horizontal rolled lifting device, a container lifting device, a roll lifting device, and the like.

It should be noted that the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification.

Claims

1. The utility model provides an intelligence tower crane material location auxiliary device based on thing communication of networking which characterized in that includes: the system comprises a controller, a radio frequency signal transmitter and a plurality of radio frequency signal receivers;

and the controller is used for calculating the positioning information of the material by adopting a time difference of arrival (TDOA) algorithm according to the position information of each radio frequency signal receiver and the arrival time of the radio frequency signal sent by the radio frequency signal receiver.

2. The intelligent tower crane material positioning auxiliary device based on internet of things communication of claim 1, wherein the radio frequency signal receivers are connected with the controller in a wired manner, and the controller sends clock synchronization signals to the radio frequency signal receivers according to preset time intervals so that the radio frequency signal receivers keep clock synchronization.

3. The intelligent tower crane material positioning auxiliary device based on the internet of things communication is characterized in that a radio frequency signal transmitted by a radio frequency signal transmitter carries intelligent tower crane identification information;

the controller is further used for screening out the radio frequency signals carrying the identification information of the intelligent tower crane of the current intelligent tower crane from all the received radio frequency signals, and calculating the positioning information of the material needing to be hoisted by the current intelligent tower crane according to the arrival time of the screened radio frequency signals so as to identify the material needing to be hoisted by the current intelligent tower crane from a plurality of materials on a construction site.

4. The intelligent tower crane material positioning auxiliary device based on the communication of the Internet of things according to claim 3, wherein an input module is arranged on the radio frequency signal transmitter;

the radio frequency signal transmitter is also used for generating intelligent tower crane identification information according to the intelligent tower crane identification input by the user through the input module.

5. The intelligent tower crane material positioning auxiliary device based on the internet of things communication is characterized in that a radio frequency signal transmitted by a radio frequency signal transmitter carries hoisting sequence information;

the controller is further used for determining the hoisting sequence of the materials needing to be hoisted by the current intelligent tower crane according to the hoisting sequence information, and sequentially hoisting the materials according to the hoisting sequence and the positioning information of the materials needing to be hoisted by the current intelligent tower crane.

6. The intelligent tower crane material positioning auxiliary device based on internet of things communication of claim 5, wherein the hoisting sequence information comprises one of serial number information input by a user through an input module on a radio frequency signal transmitter, current start-up time information of the radio frequency signal transmitter, or start broadcasting time of the radio frequency signal.

7. The intelligent tower crane material positioning auxiliary device based on internet of things communication of claim 1, wherein the plurality of radio frequency signal receivers are arranged at a plurality of positions on a crane arm, a tower body and a lifting hook of the intelligent tower crane.

8. The intelligent tower crane material positioning auxiliary device based on internet of things communication of claim 1, wherein the radio frequency signal transmitter and the radio frequency signal receiver are both realized by 433M wireless modules.

9. An intelligent tower crane material positioning auxiliary method based on internet of things communication is characterized in that the method is used for the intelligent tower crane material positioning auxiliary device based on internet of things communication in any one of claims 1 to 8, and the method comprises the following steps:

10. The intelligent tower crane is characterized in that the intelligent tower crane is provided with the intelligent tower crane material positioning auxiliary device based on the communication of the Internet of things according to any one of claims 1 to 8.