CN112942874B - High-altitude falling object intercepting early warning and recycling device and method - Google Patents
High-altitude falling object intercepting early warning and recycling device and method Download PDFInfo
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- E—FIXED CONSTRUCTIONS
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- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
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- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
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- E04G21/32—Safety or protective measures for persons during the construction of buildings
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Abstract
The invention provides a high-altitude falling object intercepting early warning and recycling device and method, and belongs to the technical field of safety. The device comprises an object falling intercepting early warning unit and an object falling recovery unit, wherein the object falling intercepting early warning unit and the object falling recovery unit are controlled by a control unit; the falling object intercepting early warning unit comprises a detection recognition device, an audible and visual alarm device, a telescopic intercepting device, an Internet of things cloud platform and a falling object early warning APP; the cloud platform of the Internet of things receives falling object information sent by the control device, sends warning information to a falling object early warning APP after processing, and the telescopic intercepting device adopts a telescopic rod and a double-layer intercepting net; the falling object recovery unit comprises a recovery tank, a rotatable intercepting net at the bottom, a motor and a rotary bearing. The invention has the advantages of real-time monitoring, alarming, protection and the like; can effectively reduce casualties and property loss caused by falling objects, and effectively protect personnel and property.
Description
Technical Field
The invention relates to the technical field of safety, in particular to a high-altitude falling object intercepting early warning and recycling device and method.
Background
With the development of economy and building industry in China, population density and building height increase, and people injury events caused by falling objects frequently occur. Most of falling objects are hard objects which can bring serious psychological and physical injuries once hitting pedestrians. The falling object is difficult to protect and pursue due to the characteristics of randomness and concealment. The existing device for preventing falling objects from high altitude mainly has the defects that monitoring equipment is lack, the monitoring is not timely and in place, or the cost of the monitoring equipment is high and is difficult to popularize, and a recovery processing unit after the falling objects are intercepted is lack.
Disclosure of Invention
The invention aims to solve the problems of casualties and property loss caused by falling objects, provides a falling object intercepting, early warning and recycling device and method, and has the advantages of real-time monitoring, alarming, protection and the like; can effectively reduce casualties and property loss caused by falling objects from the air.
The device comprises an object falling intercepting early warning unit and an object falling recovery unit, wherein the object falling intercepting early warning unit and the object falling recovery unit are controlled by a control unit; the falling object intercepting early warning unit comprises a detection recognition device, an audible and visual alarm device, a telescopic intercepting device, an Internet of things cloud platform and a falling object early warning APP; the telescopic intercepting device adopts a telescopic rod and a double-layer intercepting net; thing information that weighs down that thing networking cloud platform received control device sent, handle the back and send warning information to weigh down thing early warning APP.
The telescopic intercepting device comprises a first electromagnetic lock, a first spring, a second spring, a double-layer intercepting net, a spring top plate, a telescopic intercepting rod piece, an electromagnetic lock iron plate and a rotatable intercepting net at the bottom, wherein a rotating bearing is arranged between an upper rod and a lower rod of a fixed rod, the first electromagnetic lock is positioned on the upper rod of the fixed rod, the second electromagnetic lock is positioned on the lower rod of the fixed rod, the first spring is arranged outside the electromagnetic lock, the lower part of the fixed rod where the second electromagnetic lock is positioned is connected with a motor and the telescopic intercepting rod piece, the second spring is arranged in the telescopic intercepting rod piece, the spring top plate covers the outer rod of the telescopic intercepting rod piece, the other end of the telescopic intercepting rod piece is connected with the electromagnetic lock iron plate, the triangular double-layer intercepting net is arranged between the fixed rod where the second electromagnetic lock is positioned and the telescopic intercepting rod piece, the first electromagnetic lock, the second electromagnetic lock, the motor, the telescopic intercepting rod and the electromagnetic lock iron plate are arranged in parallel, and are respectively arranged at two sides of the telescopic intercepting device, and the two sides of the telescopic intercepting device are connected through the double-layer intercepting net; the lower part of the rotary bearing is connected with an interception net recovery motor, and the bottom end of the telescopic interception rod piece is provided with a telescopic rod recovery motor.
The falling object recovery unit comprises a recovery tank, a rotary bearing, a motor and a rotatable intercepting net which are shared by the recovery tank and the telescopic intercepting device, and the recovery tank is arranged at the lower part of the telescopic intercepting device.
The lower half part of the double-layer interception net between the fixing rods of the two electromagnetic locks II is the interception net with the rotatable bottom.
The detection recognition device adopts a photoelectric sensor, the photoelectric sensor is provided with double layers, an upper photoelectric sensor and a lower photoelectric sensor are provided between two floors, the upper photoelectric sensor is provided on the lower edge of a window of the upper floor, the lower photoelectric sensor is provided on the upper edge of the window of the lower floor, and no window is arranged between the two photoelectric sensors.
Photoelectric sensor is used for surveying the object that falls, obtains the time that the object that falls, sends the detection signal, and wherein the detection signal includes: one or more of time information, speed information, and altitude information.
The method for applying the device comprises the following steps:
s1, detecting a high-level signal of a photoelectric sensor of a detection and identification device by a control unit;
s2, judging whether the photoelectric signal has a high level by the control unit;
s3, the control unit judges that the photoelectric signal has a high level, namely an object passes through the first layer of photoelectric switch, and then the control unit starts to record the falling time;
s4, the control unit judges whether the time record is too long or overtime;
s5, if the dropping time is not overtime, the control unit judges whether the last layer of sensor passes or not;
s6, the heavy object passes through the last layer of sensor, and the control device stops time recording to obtain the passing time;
s7, according to the time difference obtained in S3 and S6, under the condition that the distance between the sensors is known, the control unit calculates one or all of falling speed and acceleration of the falling object;
s8, judging whether the object falls or not by the control unit according to the calculated acceleration;
s9, after judging that the object falls down, the control unit immediately sends an audible and visual alarm instruction, and the audible and visual alarm device is started;
and S10, when an audible and visual alarm instruction is sent, an interception instruction is sent at the same time, the electromagnetic lock is started, the telescopic interception device extends out, and heavy objects are intercepted.
S11, after judging that the falling object falls, the control unit calculates the falling height of the falling object;
s12, intercepting the heavy object by an intercepting unit;
s13, uploading falling information after the falling height of the falling object is calculated;
and S14, after the falling object is successfully intercepted, the control unit sends a falling object recovery instruction, and the falling object recovery unit performs recovery processing on the falling object.
The device provided by the invention is used for intercepting and recovering falling objects, timely informing property and owners, judging falling floors and giving an alarm to warn pedestrians.
The detection recognition device is used for monitoring falling objects and sending detection signals according to the falling speed of the falling objects obtained by the double-layer or multi-layer photoelectric sensor; the control unit is connected with the detection recognition device and used for processing the received detection signal, judging whether the object falls or not according to the detection signal, and sending an interception instruction, an audible and visual alarm instruction, a recovery interception instruction and a falling object recovery instruction; sending falling object information according to the information transmission instruction to calculate a falling floor of the falling object, and transmitting the falling object information to the Internet of things cloud platform; the sound and light alarm device is connected with the control unit and used for giving an alarm and carrying out voice prompt after receiving the signal of the control unit; the telescopic intercepting device is connected with the control unit, is used for telescopic intercepting according to the intercepting instruction and is used for recovering the telescopic intercepting device according to the recovering intercepting instruction; the falling object recovery device is connected with the control unit and used for recovering and storing falling objects according to falling object recovery instructions; the control unit is also used for judging whether the falling object is detected according to the detection signal and making a response instruction, wherein the response instruction is that if the falling object is judged, the response instruction sends out instructions including an interception instruction, an audible and visual alarm instruction, a recovery interception instruction and a falling object recovery instruction; if it is judged that the object is not a falling object, no response is made.
The cloud platform of the Internet of things is connected with the control unit through a network, and is used for receiving information such as falling floors and the like sent by the control device, and sending warning information to the falling object early warning APP after processing; the falling object early warning APP is connected with the Internet of things cloud platform through a network and used for receiving information such as falling object floors sent by the Internet of things cloud platform and displaying the information. The control unit is connected with a network through WIFI or cellular data, and transmits a data packet containing falling object information to an Internet of things cloud platform server by utilizing an HTTP protocol; wherein the information includes: the falling height of the falling object, the falling floor, the occurrence floor number of the falling object event and the falling time. The falling object information display means a process that information such as a falling floor of a falling object is displayed on a mobile phone of a property and an owner, and property security guards or the owner can know the falling object information through the mobile phone.
The acousto-optic alarm device comprises an acousto-optic alarm lamp and works according to an instruction sent by the control device; the Internet of things cloud platform has the functions of user login registration, receiving and sending falling object information; the high-altitude falling object intercepting early warning and recycling device is fixed outside the home building through a rod piece.
The technical scheme of the invention has the following beneficial effects:
in the scheme, a telescopic rod net intercepting mode is adopted, the practical application attractiveness problem is considered on the basis of increasing the intercepting area, and the attractiveness of the corresponding floor is not influenced; the falling object recovery device is applied, so that the problem that falling objects are accumulated in an intercepting network within a certain time after falling is solved, and timely and effective interception cannot be realized, and meanwhile, the falling object recovery device is convenient for property security personnel to carry out unified recovery, avoids the phenomenon that recovery needs manpower every time falling, and improves the recovery efficiency; by combining the internet of things technology, the system expansibility is enhanced while the user is facilitated, the falling object information can be checked at any time and any place, and the defects of the audible and visual alarm mode in the notification coverage range and the timeliness are overcome; the early warning APP is established, and the Internet of things cloud platform is combined, so that the community property and the owner can find and handle falling objects in time conveniently, and the safety risk possibly caused by the falling objects is reduced; the system establishes an integrated system for finding, intercepting, alarming, recovering and connecting with the Internet of things, processes the falling objects more intelligently, has higher integrity and practicability, is suitable for intercepting most falling objects, and has certain universality.
Drawings
FIG. 1 is a schematic structural view of an intercepting and recovering unit of the high-altitude falling object intercepting early warning and recovering device of the invention;
FIG. 2 is a schematic view of a recovery net of the high-altitude falling object intercepting early warning recovery device of the invention;
FIG. 3 is a schematic view of the operation process of the falling object intercepting, early warning and recycling device of the invention;
fig. 4 is a flow chart of the high-altitude falling object intercepting early warning and recovering method of the invention.
Wherein: 1, an electromagnetic lock I; 2-a rotational bearing; 3-a first spring; 4, a second electromagnetic lock; 5-a second spring; 6, double-layer interception nets; 7-an electric motor; 8-spring top sheet; 9-a telescopic interception bar member; 10-electromagnetic lock iron plate; 11-a recovery tank; 12-a rotatable intercepting net at the bottom; 13-intercept net recovery motor; 14-telescopic rod recovery motor.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a high-altitude falling object intercepting early warning and recycling device and method.
The device comprises an object falling intercepting early warning unit and an object falling recovery unit, wherein the object falling intercepting early warning unit and the object falling recovery unit are controlled by a control unit; the falling object intercepting early warning unit comprises a detection and recognition device, an audible and visual alarm device and a telescopic intercepting device; the telescopic intercepting device adopts a telescopic rod net; the falling object recovery unit comprises an Internet of things cloud platform and a falling object early warning APP, the Internet of things cloud platform receives falling object information sent by the control device, and warning information is sent to the falling object early warning APP after processing.
As shown in fig. 1, the retractable intercepting device comprises a first electromagnetic lock 1, a rotating bearing 2, a first spring 3, a second electromagnetic lock 4, a second spring 5, a double-layer intercepting net 6, a motor 7, a spring top plate 8, a retractable intercepting rod piece 9, an electromagnetic lock iron plate 10 and a bottom rotatable intercepting net 12, wherein the rotating bearing 2 is arranged between an upper rod and a lower rod of a fixed rod, the first spring 3 is arranged outside the second electromagnetic lock 4, the lower part of the fixed rod where the second electromagnetic lock 4 is located is connected with the motor 7 and the retractable intercepting rod piece 9, the second spring 5 is arranged in the retractable intercepting rod piece 9, the spring top plate 8 covers the outer rod of the retractable rod piece 9, the other end of the retractable intercepting rod piece 9 is connected with the electromagnetic lock iron plate 10, the triangular double-layer intercepting net is arranged between the fixed rod where the second electromagnetic lock 4 is located and the retractable intercepting rod piece 9, the first electromagnetic lock 1, the second electromagnetic lock 4, the motor 7, the retractable intercepting rod piece 9 and the electromagnetic lock iron plate 10 are arranged in two parallel arrangements and are respectively arranged at two sides of the retractable intercepting device, the two sides of the retractable intercepting device are connected through the double-layer 6, the lower part of the rotating bearing 2 is connected with a retractable intercepting net recovery motor 13, and the bottom end of the retractable intercepting rod recovery motor 14.
As shown in fig. 2, the drop recovery unit includes a recovery tank 11, a rotatable intercepting net 12 at the bottom shared by the retractable intercepting means, a motor 7, and a rotary bearing 2, and the recovery tank 11 is installed at the lower portion of the retractable intercepting means. The lower half part of the double-layer interception net between the fixing rods of the two electromagnetic locks II 4 is a rotatable interception net 12 at the bottom.
The detection and identification device is used for monitoring a falling object, obtaining the falling speed of the falling object according to the time difference of the object passing through the double-layer or multi-layer photoelectric switch and sending a detection signal. Specifically, the detection and identification device mainly uses a photoelectric sensor, the sensor uses infrared geminate transistors, an emitting end emits infrared rays, and detects infrared signals at a receiving end, the infrared signals output low level, no infrared signals output high level, and whether an object exists between the emitting end and the receiving end can be detected through the high level and the low level. Under normal conditions, the transmitting and receiving end is not shielded and outputs low level; when the sensor outputs a high level when the occlusion of the object is detected, the position of the object can be determined between the transmitting end and the receiving end of the sensor.
When falling object detection is carried out, the emitter and the receiver are placed on the same straight line and are parallel to the wall of a building, 5 pairs of sensors are arranged on the same horizontal plane in one group, and two or more groups of sensors are arranged on the horizontal planes at different heights. And calculating the falling height of the falling object and the horizontal distance relative to the wall according to the time difference transmitted by the sensor.
When the movement speed is calculated, the movement speed is calculated according to the time when the object passes through different positions:
wherein V represents the average speed of falling of the falling object,
representing the distance between the photosensor layers and deltat representing the time difference measured by the sensor through the segment.
Calculate drop height, expressed as:
wherein H represents the falling height of the falling object, V represents the average falling speed of the falling object, and g represents the local gravity acceleration.
From the falling height of the falling object, the corresponding falling object floor can be calculated, expressed as:
n＝H/Δd
where n is the falling floor, H is the falling height of the falling object, and Δ d is the height difference between the local floors.
The control device is connected with the detection and identification device and used for processing the received detection signal and sending a next step instruction after judgment. Specifically, the judgment is carried out according to the signal time difference, if the single-layer touch or the time difference is not in a limited range, the mistaken touch is judged, so that non-falling objects are filtered, and the possibility of system misjudgment is reduced; and if the falling object is determined, sending an interception instruction, an audible and visual alarm instruction, a recovery interception instruction, a falling object recovery instruction and an information transmission instruction.
In a specific application, the controller adopts an STM32F103C8T6 chip. Normally in a dormant state; when the pulse of the infrared sensor is sent, an interrupt is generated, the controller is awakened, timing is started, the sensor is distinguished, the position of the sensor is determined, and meanwhile, the pulse signal of the next sensor layer is waited. If the waiting time is out, the judgment is false, and the error information is sent to the upper computer for storage. When the next layer generates pulses, the speed and the acceleration are calculated according to the time difference, and the destructive power of the object is judged according to the speed and the acceleration. If the light drifted object without destructive power is judged, the inference result is sent to an upper computer for storage; if the weight with destructive power is judged, the interception net and the alarm device are started immediately, and alarm information is sent to the upper computer. And after the alarm is released, recovering the heavy object and recovering the normal state, and transmitting a signal to the control device.
After receiving the audible and visual alarm instruction, the audible and visual alarm device gives an alarm, receives the signal of the control device and can give an alarm and carry out voice prompt to remind ground personnel to avoid the danger of falling objects, the specific audible and visual alarm device is an audible and visual alarm lamp, and after receiving the alarm instruction, the audible and visual alarm lamp immediately gives out alarm sound and light.
The telescopic intercepting device is connected with the control device and used for telescopic intercepting according to the intercepting instruction and recovering the telescopic intercepting device according to the recovering intercepting instruction. Specifically, the telescopic intercepting device comprises: the electromagnetic lock comprises an electromagnetic lock I1, a telescopic intercepting rod piece 9, a fixing device and a motor 7; under normal conditions, the electromagnetic lock I1 is closed, the motor stops rotating, and the double-layer intercepting net 6 is locked; when the falling objects are intercepted, the first electromagnetic lock 1 is powered off, and the double-layer intercepting net 6 is bounced off by a first spring 3 and a second spring 5; after the interception is finished, the interception net recovery motor 13 pulls and recovers the double-layer interception net 6 to recover heavy objects, and the electromagnetic lock I1 is closed; after the recovery is finished, the motor rotates reversely to release the traction device.
As shown in fig. 3, a schematic flow chart of the work in the specific embodiment of the high-altitude falling object intercepting, early warning and recycling device in the embodiment includes the following steps:
s1, detecting a high-level signal of a photoelectric sensor by a control device.
And S2, judging whether the photoelectric signal has a high level by the control device.
And S3, judging that the photoelectric signal has a high level by the control device, namely, when an object passes through the first layer of photoelectric switch, starting to record the falling time by the control device.
And S4, judging whether the time record is too long or overtime by the control device.
And S5, if the dropping time is not overtime, the control device judges whether the last layer of sensor passes through.
And S6, the heavy object passes through the last layer of sensor, and the control device stops time recording to obtain the passing time.
And S7, calculating one or both of falling speed and acceleration of the falling object under the condition of known distance between the sensors according to the obtained time difference.
And S8, judging whether the falling object is present by the control device according to the calculated acceleration.
And S9, immediately sending an acousto-optic alarm instruction by the control device after judging that the object falls, and starting an acousto-optic alarm lamp.
And S10, when an audible and visual alarm instruction is sent, an interception instruction is sent at the same time, the electromagnetic lock is started, the interception device extends out, and heavy objects are intercepted.
And S11, after the control device judges that the falling object falls, calculating the falling height of the falling object.
And S12, intercepting the heavy object by an intercepting device.
And S13, uploading falling information after the falling height of the falling object is calculated.
And S14, after the falling object is successfully intercepted, the control device sends a falling object recovery command, and the falling object recovery device recovers the falling object.
And S15, after the recovery device recovers the falling object, the control device sends a recovery interception instruction after a period of time, and the recovery interception device recovers the interception device.
And S16, after the steps are finished, the control device enters a state to be triggered, namely a dormant state.
The recovery interception process comprises the following steps:
when a heavy object falls on the double-layer interception net 6, the second electromagnetic lock 4 of the rotatable fixed rod is powered off, the electromagnetic lock is opened, the motor 7 leaning against the wall drives the rotary bearing 2 to jack the lower rod of the fixed rod, the rotatable interception net 12 at the bottom rotates to open the bottom of the net, and the heavy object falls in the recovery tank 11 below the double-layer interception net 6;
the motor 7 leaning against the wall body drives the rotary bearing 2 to drop the lower rod of the fixed rod, the electromagnetic lock II 4 is opened, the fixed rod is fixed on the wall, the telescopic rod recovery motor 14 in the telescopic intercepting rod piece 9 rotates, the inner rod is pulled back, the fixed rod motor rotates to pull back the outer rod of the telescopic intercepting rod piece 9, then the electromagnetic lock I1 on the upper rod of the fixed rod is closed, and the telescopic intercepting rod piece 9 is fixed.
As shown in fig. 4, the invention further provides a technical scheme of a falling object early warning system based on the internet of things, which comprises the following steps: the system comprises an Internet of things cloud platform and an object falling early warning APP.
The Internet of things cloud platform is mainly used for receiving falling object information sent by the control device, extracting and storing information such as floors, building numbers and falling time in the falling object information in a MySQL database built in the server.
The cloud platform of the Internet of things is connected with the falling object early warning APP through an HTTP (hyper text transport protocol), a user account and a password are stored in the server, one account is allocated to one cell, multiple devices are allowed to log in simultaneously, and management is facilitated.
The user password in the Internet of things cloud platform database is processed through a hash algorithm, so that the condition that the user password is revealed by a server due to external attack is prevented, and an attacker only can obtain a hashed password ciphertext after invading the database.
The falling object early warning APP mainly serves as a platform for looking up falling object information at any time for community property or owners. The user can check the historical falling object information of the cell after logging in the cell account, and the user can be informed to process the falling object at the first time after the falling object occurs.
The APP adopts a polling mode to keep communication with the Internet of things cloud platform, and real-time connection is carried out.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. The utility model provides a high altitude weight interception early warning recovery unit which characterized in that: the falling object intercepting early warning unit and the falling object recovery unit are controlled by the control unit; the falling object intercepting early warning unit comprises a detection recognition device, an audible and visual alarm device, a telescopic intercepting device, an Internet of things cloud platform and a falling object early warning APP; the telescopic intercepting device adopts a telescopic intercepting rod piece and a double-layer intercepting net; the cloud platform of the Internet of things receives falling object information sent by the control unit, and sends warning information to a falling object early warning APP after processing;
the telescopic intercepting device comprises a fixed rod, a first electromagnetic lock (1), a rotary bearing (2), a first spring (3), a second electromagnetic lock (4), a second spring (5), a double-layer intercepting net, a motor (7), a spring top plate (8), a telescopic intercepting rod piece (9), an electromagnetic lock iron plate (10) and a bottom rotatable intercepting net (12), wherein the rotary bearing (2) is arranged between an upper rod of the fixed rod and a lower rod of the fixed rod, the first electromagnetic lock (1) is positioned on the upper rod of the fixed rod, the second electromagnetic lock (4) is positioned on the lower rod of the fixed rod, the first spring (3) is arranged outside the second electromagnetic lock (4), the bottom of the fixed rod where the second electromagnetic lock (4) is positioned is connected with the motor (7) and the telescopic intercepting rod piece (9), a second spring (5) is arranged in the telescopic intercepting rod piece (9), a spring top plate (8) is covered on the outer rod of the telescopic intercepting rod piece, the other end of the telescopic interception rod piece (9) is connected with an electromagnetic lock iron plate (10), a triangular double-layer interception net is installed between a fixed rod where the electromagnetic lock II (4) is located and the telescopic interception rod piece (9), the electromagnetic lock I (1), the electromagnetic lock II (4), the motor (7), the telescopic interception rod piece (9) and the electromagnetic lock iron plate (10) are arranged in parallel and are respectively arranged on two sides of the telescopic interception device, and the two sides of the telescopic interception device are connected through the double-layer interception net; the lower part of the rotary bearing (2) is connected with an interception net recovery motor (13), and the bottom end of the telescopic interception rod piece (9) is provided with a telescopic rod recovery motor (14);
the lower half part of the double-layer interception net between the fixed rods of the two electromagnetic locks II (4) is a rotatable interception net (12) at the bottom;
after the heavy object falls on the double-layer interception net, the second electromagnetic lock (4) of the rotatable fixing rod is powered off, the electromagnetic lock is opened, the motor (7) leaning against the wall drives the rotary bearing (2), the lower rod of the fixing rod is jacked up, the rotatable interception net (12) at the bottom rotates, the bottom of the net is opened, and the heavy object falls in the recovery tank (11) below the double-layer interception net.
2. The high-altitude falling object intercepting, early warning and recycling device of claim 1, is characterized in that: the falling object recovery unit comprises a recovery tank (11), a bottom rotatable intercepting net (12) shared by the telescopic intercepting device, a motor (7) and a rotary bearing (2), and the recovery tank (11) is installed on the lower portion of the telescopic intercepting device.
3. The high-altitude falling object intercepting, early warning and recycling device of claim 1, is characterized in that: the detection recognition device adopts photoelectric sensors, and photoelectric sensors erect the bilayer, and upper photoelectric sensors and lower floor's photoelectric sensors erect between two-layer floor, and upper photoelectric sensors erect edge under the window of upper story, and lower floor's photoelectric sensors erect edge on the window of lower story, guarantee that two-layer photoelectric sensors align and between no window.
4. The falling object intercepting and early warning and recycling device as claimed in claim 3, wherein the device comprises: the photoelectric sensor is used for detecting a falling object, obtaining the falling time of the falling object and sending a detection signal, wherein the detection signal comprises: one or more of time information, speed information, and altitude information.
5. The method for intercepting, early warning and recycling the falling object in the claim 1 is characterized in that: the method comprises the following steps:
s1, detecting a high-level signal of a photoelectric sensor of a detection and identification device by a control unit;
s2, judging whether the photoelectric signal has a high level by the control unit;
s3, the control unit judges that the photoelectric signal has a high level, namely an object passes through the first layer of photoelectric switch, and then the control unit starts to record the falling time;
s4, the control unit judges whether the time record is too long or overtime;
s5, if the dropping time is not overtime, the control unit judges whether the last layer of sensor passes or not;
s6, the heavy object passes through the last layer of sensor, and the control device stops time recording to obtain the passing time;
s7, according to the time difference obtained in S3 and S6, under the condition that the distance between the sensors is known, the control unit calculates one or all of falling speed and acceleration of the falling object;
s8, judging whether the object falls or not by the control unit according to the calculated acceleration;
s9, after judging that the object falls down, the control unit immediately sends an audible and visual alarm instruction, and the audible and visual alarm device is started;
s10, when an audible and visual alarm instruction is sent, an interception instruction is sent at the same time, the electromagnetic lock is started, the telescopic interception device extends out, and heavy objects are intercepted;
s11, after the control unit judges that the falling object falls, calculating the falling height of the falling object;
s12, uploading falling information after the falling height of the falling object is calculated;
and S13, after the falling object is successfully intercepted, the control unit sends a falling object recovery instruction, and the falling object recovery unit carries out recovery processing on the falling object.
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| CN113990009A (en) * | 2021-10-29 | 2022-01-28 | 西安文理学院 | Building falling object intelligent detection and interception system based on CPU and control method thereof |
| CN115450453A (en) * | 2022-10-08 | 2022-12-09 | 长沙航空职业技术学院 | High-altitude object throwing, falling and falling person recognizing, early warning and blocking system and method thereof |
| KR102633798B1 (en) * | 2023-11-23 | 2024-02-05 | 김현호 | Fall protection cage for bridge |
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