CN115665649A - Method, system, server and machine readable storage medium for monitoring operator - Google Patents
Method, system, server and machine readable storage medium for monitoring operator Download PDFInfo
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Abstract
The invention provides a monitoring method, a system, a server and a machine readable storage medium of an operator, wherein the method comprises the following steps: obtaining a distance parameter sent by base station equipment; the distance parameter is used for representing the distance between the tag device and the base station equipment; the label device is carried by an operator; the base station equipment generates a distance parameter based on a communication signal between the tag device and the base station equipment; determining whether the operator is located in the operation area or not based on the distance parameter and a preset distance threshold; wherein the distance threshold is determined based on a distance relationship between the at least one base station apparatus and an area edge position of the work area. This mode need not accurate positioning operation personnel position, according to the distance parameter between operation personnel and the base station equipment, can determine whether the operation personnel is located the operation region to the realization is to regional staff's effective control, and the monitoring mode is simple reliable.
Description
Technical Field
The present invention relates to the field of positioning system technology, and in particular, to a method, a system, a server, and a machine-readable storage medium for monitoring a worker.
Background
When the vehicle section overhauls the operation, to electrified regional maintenance, the personnel state in the maintenance region need strictly be monitored to the maintenance in-process. In the related technology, a Global Positioning System (GPS) technology can be used for Positioning the staff, but the Positioning effect is greatly influenced by the environment and weather, and when the staff works indoors, the GPS signal is poor, and the staff in the maintenance area is difficult to be effectively monitored. In addition, through setting up the access & exit in region and punching the card or infrared induction equipment to personnel's mode in the monitoring area, the real-time is relatively poor, and can appear punching the card trailing, the inaccurate problem of count, is difficult to carry out effective control to the personnel who overhaul the region equally.
Disclosure of Invention
In view of the above, the present invention provides a method, a system, a server and a machine-readable storage medium for monitoring a worker, so as to effectively monitor the worker in an area with simplicity and reliability.
In a first aspect, an embodiment of the present invention provides a method for monitoring an operator, where the method is applied to a server; the server is in communication connection with at least one base station device; at least one base station device is arranged in the operation area; the method comprises the following steps: acquiring a distance parameter sent by base station equipment; the distance parameter is used for representing the distance between the tag device and the base station equipment; the label device is carried by an operator; the base station equipment generates a distance parameter based on a communication signal between the tag device and the base station equipment; determining whether the operator is located in the operation area or not based on the distance parameter and a preset distance threshold; wherein the distance threshold is determined based on a distance relationship between the at least one base station apparatus and an area edge position of the work area.
The step of determining whether the operator is located in the working area based on the distance parameter and the preset distance threshold includes: if the distance parameter is smaller than or equal to a preset distance threshold value, determining that the operator is located in the operation area; and if the distance parameter is larger than a preset distance threshold value, determining that the operator is not positioned in the operation area.
The distance threshold is specifically determined by: acquiring a first position parameter of the base station equipment in the operation area and a second position parameter of a plurality of area edge positions of the operation area; determining a distance value between the base station equipment and the edge position of each area based on the first position parameter and the second position parameter; the distance threshold is determined based on a distance value between the base station device and each area edge location.
The step of determining the distance threshold based on the distance value between the base station device and the edge position of each area includes: determining an average value of distance values between the base station equipment and the edge position of each area; the distance threshold is determined based on the average.
The base station device includes a plurality of base stations; each base station device corresponds to an average value; a step of determining a distance threshold based on the average, comprising: determining the minimum value in the average value corresponding to each base station device; the minimum value is determined as the distance threshold.
The step of obtaining second position parameters of a plurality of area edge positions of the working area includes: determining an area edge line of the operation area; wherein, the region edge line surrounds the operation region; and acquiring a plurality of area edge positions on the area edge line according to preset acquisition parameters, and determining the position parameters of the area edge positions as second position parameters.
After the step of determining whether the operator is located in the working area based on the distance parameter and the preset distance threshold, the method further includes: determining the completion state of the job task in the job area; if the completion state of the operation task is unfinished and the operator is located in the operation area, determining that the working state of the operator is on duty; and if the completion state of the operation task is not completed and the operator is not positioned in the operation area, determining that the working state of the operator is off duty.
The server is also in communication connection with the camera equipment; after the step of determining that the working state of the operator is off duty, the method further comprises the following steps: image data of an operator is acquired by an image pickup apparatus.
After the step of determining whether the operator is located in the working area based on the distance parameter and the preset distance threshold, the method further includes: sequentially collecting at least two distance parameters according to a time sequence; wherein the at least two distance parameters comprise a first distance parameter and a second distance parameter; determining that the operator enters the work area if the operator is determined not to be located in the work area based on the first distance parameter and the distance threshold and if the operator is determined to be located in the work area based on the second distance parameter and the distance threshold; determining that the operator is away from the work area if the operator is determined to be located in the work area based on the first distance parameter and the distance threshold and if the operator is determined not to be located in the work area based on the second distance parameter and the distance threshold; and updating the number of operators in the working area.
In a second aspect, an embodiment of the present invention provides a server, including a processor and a memory, where the memory stores machine executable instructions capable of being executed by the processor, and the processor executes the machine executable instructions to implement the above monitoring method for a worker.
In a third aspect, embodiments of the present invention provide a machine-readable storage medium storing machine-executable instructions, which when called and executed by a processor, cause the processor to implement the above-mentioned monitoring method for a worker.
In a fourth aspect, an embodiment of the present invention provides a monitoring system for an operator, where the system includes a server, a base station device, and a tag device; the label device is carried by an operator; wherein the base station device is configured to: sending out a detection signal to detect whether a label device exists in a preset range; the label device is used for: if receiving a detection signal sent by the base station equipment, returning a reflection signal to the base station equipment; the base station device is further configured to: calculating the distance between the tag device and the base station equipment based on the detection signal and the reflection signal to obtain a distance parameter; sending the distance parameter to the server; the server is used for: and determining whether the operator is located in the working area or not based on the distance parameter and a preset distance threshold.
The base station device is further configured to: and calculating the distance between the tag device and the base station equipment based on the sending time of the detection signal, the receiving time of the reflection signal and a preset signal propagation speed, and determining the calculation result as a distance parameter.
The embodiment of the invention brings the following beneficial effects:
the monitoring method, the monitoring system, the monitoring server and the machine-readable storage medium of the operator are characterized in that the method is applied to the monitoring server; the server is in communication connection with at least one base station device; at least one base station device is arranged in the operation area; the method comprises the following steps: acquiring a distance parameter sent by base station equipment; the distance parameter is used for representing the distance between the tag device and the base station equipment; the label device is carried by an operator; the base station equipment generates a distance parameter based on a communication signal between the tag device and the base station equipment; determining whether the operator is located in the operation area or not based on the distance parameter and a preset distance threshold; wherein the distance threshold is determined based on a distance relationship between the at least one base station apparatus and an area edge position of the work area. In the method, a worker carries the tag device, a working area is provided with base station equipment, and whether the tag device is located in the working area can be determined through a distance parameter between the base station equipment and the tag device; according to the method, the position of the operator does not need to be accurately positioned, whether the operator is located in the operation area or not can be determined according to the distance parameter between the operator and the base station equipment, so that the operator in the area can be effectively monitored, and the monitoring mode is simple and reliable.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a monitoring method for an operator according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electronic map according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a system deployment of a worker according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a server according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the vehicle section maintenance process, the maintenance relates to an electrified region, the maintenance process needs to be strictly monitored, and the following aspects need to be monitored:
1) Personnel walk wrong between jobs, operating equipment or cabinets that should not be operated.
2) The maintenance execution process is not standard, and comprises the phenomena of not-in-place maintenance, off-post personnel and the like.
3) The control of the dangerous area is not strict, and the timely identification and warning of the dangerous source are not realized.
In the related technology, the positioning of personnel can be realized by adopting a GPS (global positioning system), and the GPS technology is a point location measurement navigation technology by utilizing an artificial satellite, is generally applied outdoors, and has the positioning precision of 5-10 meters. In most cases, the maintenance operation is completed indoors, so that the situation that GPS signals are poor or even GPS satellite signals cannot be received may occur, the positioning effect is not ideal, and people in the maintenance area are difficult to effectively monitor. In addition, the number of people is counted by technical means such as card swiping or infrared sensing, the defects of card swiping trailing and inaccurate counting exist, personnel counting is not real-time, and the like are difficult to comprehensively manage and control personnel in an overhaul area.
Based on the above, the embodiment of the invention provides a monitoring method, a monitoring system, a server and a machine-readable storage medium for an operator. The technology can be applied to the scene of positioning, monitoring and managing personnel in the vehicle maintenance industry or other industries.
First, referring to a flowchart of a monitoring method for an operator shown in fig. 1, the method is applied to a server; the server is in communication connection with at least one base station device; at least one base station device is arranged in the operation area; here, the base station apparatus is disposed within the work area, for example: the inlet or outlet position of the partially enclosed working area can also be arranged at the boundary position of the open working area.
Step S101, obtaining a distance parameter sent by base station equipment; the distance parameter is used for representing the distance between the tag device and the base station equipment; the label device is carried by an operator; the base station equipment generates a distance parameter based on a communication signal between the tag device and the base station equipment;
in the personnel positioning system, the hardware part usually consists of equipment such as a base station, a tag device, a server and the like, and generally, the base station needs to receive a communication signal of the tag device, calculate the position information of the tag device and then send the data to the server to complete further calculation.
Here, the base station apparatus may send a detection signal to detect whether the tag device exists within a preset range, where the detection signal may be a radio signal, an infrared signal, or the like. The label device is a positioned device, is carried by an operator to position the position of the operator, and has common label types such as an I-shaped label, a hand ring type label, a safety helmet type label and the like. When the operator moves, the label device moves in real time along with the operator, and simultaneously returns a reflection signal to a corresponding base station after receiving a detection signal sent by the base station equipment. The distance parameter is a parameter for characterizing a distance between the tag device and the base station apparatus, and may be generated by calculation based on a communication signal between the tag device and the base station apparatus.
In practical implementation, in an operation area, the base station performs positioning communication with surrounding tag devices respectively, calculates a relative distance between the base station and the tag devices according to propagation time and propagation speed of communication signals between the tag devices and the base station equipment to obtain distance parameters, and further, the base station equipment uploads the distance parameters to the server so that the server can calculate the position states of the tag devices.
In this step, the server obtains a distance parameter sent by the base station device, where the distance parameter is used to represent a distance between the tag device and the base station device.
Step S102, determining whether an operator is located in an operation area or not based on the distance parameter and a preset distance threshold; wherein the distance threshold is determined based on a distance relationship between the at least one base station apparatus and an area edge position of the work area.
The operation area can be an indoor environment with a shielding object above or an outdoor field in the open air, the edge position of the operation area is the position on the edge line of the operation area, and the position information can be acquired in a certain acquisition mode. The distance threshold value represents the minimum value of the relative distance between the base station equipment and the area edge position of the operation area, is determined based on the area edge position relation between at least one base station equipment and the operation area, and is determined when the base station position and the operation area are determined.
Determining whether the operator is located in the operation area or not according to the distance parameter and a preset distance threshold value, that is, determining whether the operator is located in the operation area or not according to comparison between the distance between the tag device attached to the operator and the base station equipment and the minimum value of the relative distance between the base station and the edge position of the operation area, wherein it can be understood that when the distance between the tag device and the base station equipment is smaller than or equal to the preset distance threshold value, it is indicated that the operator is located in the operation area; when the distance between the tag device and the base station apparatus is greater than the distance threshold, it is indicated that the operator is not located in the work area.
In the step, a relative distance is used for carrying out a personnel positioning algorithm, whether the operating personnel are located in the operating area or not is determined according to the relation between the distance parameter uploaded by the base station equipment and the preset distance threshold, the position of the operating personnel does not need to be accurately positioned, only the distance parameter between the operating personnel and the base station equipment needs to be acquired, and whether the operating personnel are located in the operating area or not can be determined according to the relation between the distance parameter and the preset distance threshold, so that the personnel in the area are monitored, and the personnel management and control in the maintenance operation process are simply and reliably realized.
The monitoring method of the operating personnel obtains the distance parameter sent by the base station equipment; the distance parameter is used for representing the distance between the tag device and the base station equipment; the label device is carried by an operator; the base station equipment generates a distance parameter based on a communication signal between the tag device and the base station equipment; determining whether the operator is located in the operation area or not based on the distance parameter and a preset distance threshold; wherein the distance threshold is determined based on a distance relationship between the at least one base station apparatus and an area edge position of the work area. In this mode, need not accurate positioning operation personnel position, only need acquire the distance parameter between operation personnel and the base station equipment, according to the relation of distance parameter and predetermined distance threshold value, can determine whether the operation personnel are located the operation region to personnel in the monitoring area, this mode has realized the management and control of maintenance operation in-process personnel simply reliably.
The following embodiments provide specific implementations of obtaining a distance threshold.
Specifically, a first position parameter of the base station equipment in a working area and a second position parameter of a plurality of area edge positions of the working area are obtained; determining a distance value between the base station equipment and the edge position of each area based on the first position parameter and the second position parameter; the distance threshold is determined based on the distance value between the base station device and each area edge location.
The first position parameter is a set of position information of all base station devices in the work area; the second position parameter is a set of a plurality of area edge position information of the work area.
In actual implementation, a site actual map and drawing software are combined on a computer, a site electronic map of an operation area is drawn according to a certain proportion, and a first position parameter, a second position parameter and a distance threshold are obtained in a position coordinate mode. Taking an SVG electronic map as an example, after a tag device and a base station device are deployed, starting a server, manually drawing a polygonal operation area which can be covered by communication signals on the SVG electronic map displayed by a client according to XY axis coordinates, wherein edge lines of the operation area surround the operation area as an electronic fence, and converting the area edge lines into an electronic fence coordinate system { X & lt/EN & gt coordinate system according to the proportion of the SVG electronic map and an actual map a1 Y a1 ,X a2 Y a2 ,……X an Y an Denotes, as indicated by the dashed line in fig. 2, the coordinates of the respective base stations { X } in the electronic fence b1 Y b1 ,X b2 Y b2 ,……X bm Y bm And taking the set of coordinates as a first position parameter, furtherAnd uploading the coordinates of the fence and the base station to a server.
As for the second position parameter, it may be acquired by:
determining a region edge line of the operation region; wherein, the region edge line surrounds the operation region; and acquiring a plurality of region edge positions on the region edge line according to preset acquisition parameters, and determining the position parameters of the region edge positions as second position parameters.
That is to say, after the area edge line of the operation area is determined, a plurality of position point coordinates are collected on the operation area edge line according to preset collection parameters, and the obtained coordinate set is used as a second position parameter. For example, finding an electronic fence surrounding a job area on an SVG electronic map, a certain number of position points can be collected uniformly at each edge and angular position on the electronic fence, and a set of the obtained coordinates of the plurality of position points is used as a second position parameter.
Further, according to the first position parameter and the second position parameter, a distance value between the base station device and each area edge position is determined. Specifically, an average value of distance values between the base station device and each area edge position is determined; the distance threshold is determined based on the average.
In a specific implementation manner, this embodiment may provide an average D for calculating a set of distances from the base station to the edge positions of each area avej The formula (c) of (a), i.e.,
wherein j has a value range of 1-m; the coordinate set of the base station equipment is { X b1 Y b1 ,X b2 Y b2 ,……X bm Y bm The value range of i is 1-n, and i represents the edge position of the ith area; the set of region edge position coordinates is { X } a1 Y a1 ,X a2 Y a2 ,……X an Y an }. It should be noted that, for each base station j, the average value D corresponding to the base station j can be obtained through calculation by the above formula avej When the total number of base stations is m, the average value D is obtained avej Set as { D ave1 ,D ave2 ……D avem }。
Further, a distance threshold is determined from the calculated average. Specifically, when the base station apparatus includes a plurality of base station apparatuses, each base station apparatus may correspond to one average value; determining the minimum value of the average values corresponding to each base station device; the minimum value is determined as the distance threshold.
Illustratively, each base station in the operation area is evaluated according to an average calculation formula to obtain a set of distance averages corresponding to a plurality of base stations, and a minimum value D in the set of average values is determined min That is, the amount of the oxygen present in the gas,
D min ＝min 0～m {D ave1 ,D ave2 ……D avem h, dividing the minimum value D min Determined as a distance threshold.
In the above manner, an electronic map is drawn, an electronic fence coordinate system is set by using the electronic map, and a distance threshold between the base station device and each area edge position is obtained according to the coordinates of the device position points. Further, it may be determined whether the operator is located in the working area based on a relationship between the value and the distance parameter.
The embodiments described below provide specific implementations for determining whether a worker is located in a work area.
First, a distance parameter is acquired. The distance parameter is used for representing the distance between the tag device and the base station equipment, and the distance between the tag device and the base station equipment is calculated based on the sending time of the detection signal, the receiving time of the reflection signal and the preset signal propagation speed.
In consideration of the lack of indoor positioning capability of a GPS (global positioning system), an Ultra Wide Band (UWB) technology can be adopted to position the tag device, and the UWB technology has the advantages of low system complexity, low power spectral density of transmitted signals, insensitivity to channel fading, low interception capability, high positioning accuracy and the like, and is particularly suitable for high-speed wireless access in indoor and other dense multipath places.
Illustratively, when an operator carrying the tag device enters the sensing range of the base station equipment, the base station equipment firstly emits infrared light and starts timing; when the infrared light is reflected back to the base station equipment from the label device, the timing is finished, and the flight time of the light is measured by adopting the time difference, and the speed of the light is constant, so that the time difference is calculated according to the formula: d m = (speed of light x time of flight)/2, relative distance D between base station and operator can be calculated m I.e., the distance parameter, the base station apparatus uploads the distance parameter to the server in real time.
Further, whether the operator is located in the operation area is determined based on the distance parameter and a preset distance threshold, and if the distance parameter is smaller than or equal to the preset distance threshold, the operator is determined to be located in the operation area; and if the distance parameter is larger than a preset distance threshold value, determining that the operator is not positioned in the operation area.
Illustratively, the server collects the distance D between the tag device and the base station in real time m When the distance D is m ≤D min When the operator is located in the electronic fence, i.e. in the work area; when the distance D m ＞D min When the operator leaves the electronic fence, the operator is not located in the operation area.
The GPS positioning method is different from the prior art, needs to perform conversion between SVG coordinates of a computer and GPS map coordinates, is mainly applied to accurate positioning of personnel and drawing of scenes such as activity tracks of operators, and is relatively complex in design process.
In order to further monitor the activities of the operators in real time and standardize the execution process of the operation, after the position states of the operators are judged, various monitoring functions can be added in upper-layer application according to actual needs, and the function of comprehensive management and control in the operation process is realized.
In one mode, the work status of the operator is further determined based on the completion status of the work task in the work area.
Specifically, the completion state of a job task in a job area is determined; if the completion state of the operation task is not completed and the operator is located in the operation area, determining that the working state of the operator is on duty; and if the completion state of the operation task is not completed and the operator is not located in the operation area, determining that the working state of the operator is off duty.
Here, the completion state of the job task in the job area may be determined by the operation state of the working machine and the job time, and it can be understood that the distance D between the tag device and the base station is collected in real time by the server when the job task is in the incomplete state m If D is m ≤D min When the operator is in the working area, the operator is judged to be in the on-duty state; when the distance D m ＞D min When the worker is not located in the working area and the leaving time is before the end of the work, the worker off duty state is determined.
In another mode, video linkage and video early warning functions can be added.
Specifically, the server can be also in communication connection with the camera device; after the working state of the operator is determined to be the off-post state, image data of the operator can be acquired through the camera equipment.
Illustratively, when the worker is in an off-duty state, the camera device is triggered, for example: and the network ball machine pops up a real-time monitoring picture on a client interface, alarms personnel to leave the post, and simultaneously captures a monitoring area picture as a leaving post evidence.
Under this mode, in the maintenance operation in-process, set up the supervision and the management and control in the aspect of safety fields such as fence, personnel early warning, video linkage cross border to the maintenance operation region, make the maintenance execution process more standardized, simultaneously, the timely discernment of danger source and warning also can be accomplished to the real time monitoring picture.
In still another mode, a function of counting the number of workers in the work area can be realized.
Specifically, after determining whether an operator is located in an operation area, sequentially collecting at least two distance parameters according to a time sequence; wherein the at least two distance parameters comprise a first distance parameter and a second distance parameter; determining that the operator enters the work area if the operator is determined not to be located in the work area based on the first distance parameter and the distance threshold and if the operator is determined to be located in the work area based on the second distance parameter and the distance threshold; determining that the operator is away from the work area if the operator is determined to be located in the work area based on the first distance parameter and the distance threshold and if the operator is determined not to be located in the work area based on the second distance parameter and the distance threshold; and updating the number of operators in the working area.
Here, the base station may successively acquire a plurality of distance parameters according to a time sequence; and updating the number of the operators in the operation area based on the relationship between the plurality of distance parameters and the preset distance threshold.
For example, the base station may successively acquire a plurality of distance parameters according to a time sequence, where the distance parameters include a first distance parameter and a second distance parameter, and an acquisition time of the first distance parameter is prior to the second distance parameter. If the operator is determined not to be located in the operation area according to the first distance parameter and the distance threshold value, and the operator is determined to be located in the operation area based on the second distance parameter and the distance threshold value, the operator enters the operation area; at this time, the statistics of the work area personnel are increased by one bit. Determining that the operator is away from the work area if the operator is determined to be located in the work area based on the first distance parameter and the distance threshold and the operator is not determined to be located in the work area based on the second distance parameter and the distance threshold; at this time, the statistics of the work area personnel are reduced by one bit.
In the mode, the number of personnel in the operation area can be simply and conveniently counted in real time, and personnel monitoring in the maintenance operation process is realized.
It should be noted that, in the positioning process, the communication signal reflected by the tag device to the base station device may include the identity information of the operator or may not include the identity information, and when the signal reflected by the tag device does not carry the identity information, the base station device may confuse signals reflected by multiple tag devices, which may result in inaccurate monitoring of the statistics of the number of people and the off-duty state.
Based on the above, in order to count the number of people in the area and monitor the on duty and off duty states of the people, in a period of time, one base station device only collects the signal of one tag, and determines whether the tag is in the operation area or not and the states of the tag device entering and exiting the operation area according to the device number of the base station device, such as the ID of the base station device.
A specific implementation mode is that a plurality of channels are arranged in an operation area, each channel is provided with a base station device, and one channel only allows one worker to enter, so that whether the worker enters the operation area or not can be determined, and the worker is in a state of being on duty and off duty.
In an embodiment, taking an application of UWB personnel location technology in vehicle segment maintenance work as an example, the monitoring method for the operator provided by the embodiment is described in detail, and specifically relates to the following aspects:
1) A positioning engine: the system comprises a tag device and a positioning base station;
the UWB communication technology of wireless carrier is adopted in the positioning of operators, and has the advantages of low system complexity, low power spectral density of transmitted signals, insensitivity to channel fading, low interception capability, high positioning accuracy and the like, and is particularly suitable for high-speed wireless access in dense multipath places such as indoor places.
The relative distance between objects is calculated using a TOF (Time of Flight) algorithm, and the sensor in the base station device emits infrared light or laser light using a tiny transmitter, where the generated light bounces off any object and returns to the sensor. The sensor can measure the distance between the object and the sensor based on the time difference between the emission of the light and the return of the light to the sensor after reflection by the object.
2) The label device comprises: an intelligent safety helmet;
the intelligent safety helmet is a novel safety helmet integrating personnel positioning tags, emergency alarming and safety protection functions, and in the working process of personnel, the positioning tags in the safety helmet and a positioning base station emit infrared light mutually to sense the relative distance between the positioning tags and the positioning base station, so that the personnel positioning function is realized; when an abnormal emergency occurs, the emergency button in the safety helmet can be used for carrying out safe help seeking.
3) A base station device;
in an overhaul operation area, namely an overhaul platform, considering factors such as overhaul area, area shape and the like, a plurality of positioning base stations are deployed and used for communicating with positioning tags in a range, the base stations respectively perform distance measurement with surrounding positioning tags, and a distance measurement result is uploaded to a positioning server for tag position calculation.
4) Positioning personnel;
after the positioning label and the positioning base station are deployed, starting a positioning server, manually drawing a polygonal operation area which can be covered by UWB signals and video monitoring on an SVG electronic map displayed by a client according to XY-axis coordinates, and converting into an electronic fence coordinate system { X) according to the proportion of the SVG electronic map and an actual map a1 Y a1 ,X a2 Y a2 ,……X an Y an }; meanwhile, marking coordinate systems { X) of all base stations in the electronic fence b1 Y b1 ,X b2 Y b2 ,……X bm Y bm }; and publishing the fence and the base station coordinate system to a positioning server through a network.
When an operator wearing the intelligent safety helmet enters the sensing range of the positioning base station, as shown in the figure, the base station firstly emits infrared light and starts timing; when the infrared light is reflected back to the base station from the worker helmet tag, the timing is finished, and the light 'flight time' is measured by adopting the time difference, because the speed of the light is constant, the light is measured by the formula: d m = (speed of light x time of flight)/2, relative distance D between base station and operator can be calculated m And the base station uploads the measured distance to a positioning server in real time.
The positioning server calculates the distance from each base station to the electronic fenceAverage value D of distance sets of coordinate points of columns avej That is to say that,
wherein j has a value ranging from 1 to m; the coordinate set of the base station equipment is { X b1 Y b1 ,X b2 Y b2 ,……X bm Y bm The value range of i is 1-n, and i represents the edge position of the ith area; the set of region edge position coordinates is { X } a1 Y a1 ,X a2 Y a2 ,……X an Y an }. When the total number of base stations is m, the average value D can be obtained avej Set as { D ave1 ,D ave2 ……D avem }。
Further, obtaining the minimum value D of the average value set min Wherein D is min ＝min 0～m {D ave1 ,D ave2 ……D avem Based on the value, the functions of on duty, off duty, quantity statistics and the like of the personnel can be realized in the upper-layer application.
5) Judging whether the operator is on duty or off duty;
the positioning server collects the distance D between the operator and the positioning base station in real time m When the distance D is m ≤D min When the operation staff enters the electronic fence, the operation staff is judged to be on duty; when D is present m ＞D min And judging that the operator leaves the electronic fence and the leaving time is before the end of the operation, and judging that the operator leaves the post.
6) Counting the number of operating personnel;
when the operator enters the electronic fence, adding one to the statistical value of the number of the operators in the operation area; when the personnel leave the electronic fence, the statistical value of the number of the personnel in the working area is reduced by one.
7) Video linkage;
when the operator leaves the post, the network ball machine is triggered to pop up a real-time monitoring picture on a client interface, the operator is warned to leave the post, and meanwhile, a monitoring area picture is captured to serve as a leave-post evidence.
In the above-mentioned mode, according to the relation of distance parameter and predetermined distance threshold value, can determine whether the operation personnel are located the operation region to personnel in the monitoring area, in the maintenance operation in-process, set up the supervision and the management and control in the aspect of safety fields such as fence, personnel early warning, video linkage, personnel real-time statistics to the maintenance operation region, realized the comprehensive management and control of maintenance operation process reliably.
The embodiment also provides a monitoring system of the operating personnel, which comprises a server, base station equipment and a label device; the tag device is carried by an operator, wherein the base station apparatus is configured to: sending out a detection signal to detect whether a label device exists in a preset range; the label device is used for: if receiving a detection signal sent by the base station equipment, returning a reflection signal to the base station equipment; the base station device is further configured to: calculating the distance between the label device and the base station equipment based on the detection signal and the reflection signal to obtain a distance parameter; sending the distance parameter to a server; the server is used for: and determining whether the operator is positioned in the working area or not based on the distance parameter and a preset distance threshold value.
Specifically, the system includes a server, a base station device, and a tag device, the base station device is configured to: sending out a detection signal to detect whether a label device exists in a preset range; the label device is used for: if receiving a detection signal sent by the base station equipment, returning a reflection signal to the base station equipment; the base station device is further configured to: calculating the distance between the label device and the base station equipment based on the detection signal and the reflection signal to obtain a distance parameter; sending the distance parameter to a server; the server is used for: and determining whether the operator is positioned in the working area or not based on the distance parameter and a preset distance threshold value.
Illustratively, a system device deployment diagram is shown in fig. 3, and hardware devices in the system include: the system comprises a server, base station equipment and a tag device, adopts advanced technologies such as UWB technology, computer logic algorithm, signal monitoring and video linkage to establish a programmed, networked, visualized and standardized safety guarantee system, and realizes comprehensive control of the overhaul operation process of the vehicle section.
In addition, the base station apparatus is further configured to: and calculating the distance between the tag device and the base station equipment based on the sending time of the detection signal, the receiving time of the reflection signal and a preset signal propagation speed, and determining the calculation result as a distance parameter.
Illustratively, taking the case of a system that uses UWB technology to achieve operator positioning, a TOF time-of-flight algorithm is used to calculate the relative distance between objects, and the sensors of the base station device use tiny emitters that emit infrared light or laser light, where the light generated bounces off any object and returns to the sensor. According to the time difference between the emission of the light and the return to the sensor after being reflected by the object, by the formula: dm = (speed of light x time of flight)/2, the relative distance between the base station and the operator, that is, the distance parameter, can be calculated, and the base station device sends the distance parameter to the server in real time.
The embodiment also provides a server, which comprises a processor and a memory, wherein the memory stores machine executable instructions capable of being executed by the processor, and the processor executes the machine executable instructions to realize the monitoring method for the operator.
Referring to fig. 4, the server includes a processor 100 and a memory 101, the memory 101 stores machine executable instructions capable of being executed by the processor 100, and the processor 100 executes the machine executable instructions to implement the monitoring method for the operator.
Further, the server shown in fig. 4 further includes a bus 102 and a communication interface 103, and the processor 100, the communication interface 103 and the memory 101 are connected through the bus 102.
The Memory 101 may include a high-speed Random Access Memory (RAM) and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 103 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like can be used. The bus 102 may be an ISA bus, a PCI bus, an EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 4, but that does not indicate only one bus or one type of bus.
The present embodiments also provide a machine-readable storage medium storing machine-executable instructions, which when invoked and executed by a processor, cause the processor to implement the above-mentioned monitoring method for a worker.
The method, system, server and computer program product for monitoring an operator provided in an embodiment of the present invention include a computer readable storage medium storing a program code, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, and will not be described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, an operation and maintenance management device, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (13)
1. The monitoring method of the operator is characterized in that the method is applied to a server; the server is in communication connection with at least one base station device; the at least one base station device is arranged in a working area; the method comprises the following steps:
acquiring a distance parameter sent by the base station equipment; wherein the distance parameter is used for characterizing the distance between a tag device and the base station equipment; the label device is carried by an operator; the base station equipment generates the distance parameter based on a communication signal between the tag device and the base station equipment;
determining whether the operator is located in the operation area based on the distance parameter and a preset distance threshold; wherein the distance threshold is determined based on a distance relationship between the at least one base station device and an area edge position of the work area.
2. The method of claim 1, wherein the step of determining whether the operator is located in the work area based on the distance parameter and a preset distance threshold comprises:
if the distance parameter is smaller than or equal to a preset distance threshold value, determining that the operator is located in the operation area;
and if the distance parameter is larger than a preset distance threshold value, determining that the operator is not located in the operation area.
3. The method according to claim 1, wherein the distance threshold is determined by:
acquiring a first position parameter of the base station equipment in the operation area and a second position parameter of a plurality of area edge positions of the operation area;
determining a distance value between the base station device and each of the area edge locations based on the first location parameter and the second location parameter;
determining the distance threshold based on a distance value between the base station device and each of the area edge locations.
4. The method of claim 3, wherein the step of determining the distance threshold based on the distance value between the base station device and each of the zone edge locations comprises:
determining an average value of distance values between the base station device and each of the zone edge locations;
determining the distance threshold based on the average.
5. The method of claim 4, wherein the base station device comprises a plurality of base stations; each base station device corresponds to one average value; the step of determining the distance threshold based on the average value comprises:
determining the minimum value of the average values corresponding to each base station device;
determining the minimum value as the distance threshold.
6. The method of claim 3, wherein the step of obtaining a second location parameter for a plurality of zone edge locations of the work zone comprises:
determining a region edge line of the operation region; wherein the region edge lines surround the working region;
and acquiring a plurality of area edge positions on the area edge line according to preset acquisition parameters, and determining the position parameters of the area edge positions as second position parameters.
7. The method of claim 1, wherein after the step of determining whether the operator is located in the work area based on the distance parameter and a preset distance threshold, the method further comprises:
determining the completion state of the job task in the job area;
if the completion state of the operation task is not completed and the operator is located in the operation area, determining that the working state of the operator is on duty;
and if the completion state of the operation task is not completed and the operator is not located in the operation area, determining that the working state of the operator is off duty.
8. The method of claim 7, wherein the server is further communicatively connected to a camera device; after the step of determining that the working state of the operator is off duty, the method further comprises: and acquiring image data of the operator through the camera equipment.
9. The method of claim 1, wherein the step of determining whether the operator is located in the work area is followed based on the distance parameter and a preset distance threshold, the method further comprising:
sequentially collecting at least two distance parameters according to a time sequence; wherein the at least two distance parameters comprise a first distance parameter and a second distance parameter;
determining that the operator enters the work area if the operator is determined not to be located in the work area based on the first distance parameter and the distance threshold and the operator is determined to be located in the work area based on the second distance parameter and the distance threshold;
determining that the operator is away from the work area if the operator is determined to be located in the work area based on the first distance parameter and the distance threshold and the operator is determined not to be located in the work area based on the second distance parameter and the distance threshold;
and updating the number of the operators in the operation area.
10. A server comprising a processor and a memory, the memory storing machine executable instructions executable by the processor, the processor executing the machine executable instructions to implement the method of monitoring a worker of any one of claims 1 to 9.
11. A machine-readable storage medium having stored thereon machine-executable instructions which, when invoked and executed by a processor, cause the processor to implement the method of monitoring a worker of any one of claims 1 to 9.
12. A monitoring system for an operator, the system comprising a server, a base station device and a tag device; the label device is carried by an operator;
wherein the base station device is configured to: sending out a detection signal to detect whether a label device exists in a preset range;
the label device is used for: if receiving a detection signal sent by the base station equipment, returning a reflection signal to the base station equipment;
the base station device is further configured to: calculating the distance between the label device and the base station equipment based on the detection signal and the reflection signal to obtain a distance parameter; sending the distance parameter to the server;
the server is configured to: and determining whether the operator is located in the working area or not based on the distance parameter and a preset distance threshold.
13. The system of claim 12, wherein the base station device is further configured to:
and calculating the distance between the tag device and the base station equipment based on the sending time of the detection signal, the receiving time of the reflection signal and a preset signal propagation speed, and determining the calculation result as the distance parameter.
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| CN116992907A (en) * | 2023-07-27 | 2023-11-03 | 北京瑞霖徕特科技有限公司 | Internet of things management system and method |
| CN116992907B (en) * | 2023-07-27 | 2024-03-29 | 珠海昊宇科技有限公司 | Internet of things management system and method |
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