Electric power engineering safety anti-electric shock monitoring system

Abstract

The invention belongs to the field of electric power construction safety management, and discloses an electric power engineering safety anti-electric shock monitoring system which comprises a wireless positioning module, an image monitoring module and an early warning prompting module. The wireless positioning module is used for acquiring the real-time position of a monitored object by adopting a radio technology; the image monitoring module is used for acquiring a monitoring image of the real-time position when the distance between the real-time position of the object and the edge of the set electronic fence is smaller than a set distance threshold value; and the early warning prompt module is used for judging whether an early warning condition is met or not according to the monitoring image, and if so, sending an early warning prompt to the monitored object. According to the invention, when the electromagnetic interference exists in the construction site and the positioning has large offset, the probability of false alarm can be effectively reduced, and the probability of occurrence of an event that the false alarm occupies the processing time of a manager can be effectively reduced, so that the anti-electric shock management can be more effectively and timely carried out on the construction site of the electric power engineering.

Description

Technical Field

[0001] The invention relates to the field of power construction safety management, and in particular to a power engineering safety anti-electric shock monitoring system. Background Art

[0002] During the construction of power projects, there are sometimes live areas in the construction site. In order to prevent construction personnel and equipment from entering the live areas, the live areas are usually fenced to prevent electric shock. However, if the live area is very large and the construction time of the power project is very short, the fence will take a long time to prevent electric shock, which will obviously seriously affect the final construction efficiency.

[0003] With the development of Internet of Things technology, real-time positioning is gradually being used to alert construction workers and equipment approaching live areas. By placing positioning devices on construction workers and equipment in advance, positioning technology can be used to obtain the real-time location of construction workers and equipment. However, this method still has certain disadvantages. The construction site may have electromagnetic interference, and there may be objects that reflect the positioning signal sent by the positioning device, which makes the positioning result inaccurate and leads to a high probability of false alarms. Summary of the invention

[0004] The purpose of the present invention is to disclose a power engineering safety anti-electric shock monitoring system to solve the technical problems raised in the background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a power engineering safety anti-electric shock monitoring system, including a wireless positioning module, an image monitoring module and an early warning prompt module;

[0007] The wireless positioning module is used to obtain the real-time position of the monitored object using radio technology;

[0008] The image monitoring module is used to obtain a monitoring image of the real-time position when the distance between the real-time position of the object and the edge of the set electronic fence is less than a set distance threshold;

[0009] The early warning prompt module is used to determine whether the early warning conditions are met based on the monitoring image. If so, a warning prompt is issued to the monitored object;

[0010] Among them, the image monitoring module includes electronic fence setting equipment, distance calculation equipment and drones;

[0011] The electronic fence setting device is used to set the electronic fence and distance threshold. The area corresponding to the electronic fence can completely include the electrified area of ​​the construction site;

[0012] The distance calculation device is used to calculate the shortest distance between the real-time position of the object and the electronic fence, and the shortest distance is used as the distance between the real-time position of the object and the edge of the set electronic fence;

[0013] The drone is used to fly over the real-time location of the object and obtain a monitoring image of the real-time location when the distance between the real-time location of the object and the edge of the set electronic fence is less than a set location threshold.

[0014] Preferably, the wireless positioning module includes a positioning signal transmitting device, a positioning signal receiving device and a positioning signal processing device;

[0015] The positioning signal transmitting device is carried by the monitored object and is used to transmit the positioning signal;

[0016] Positioning signal receiving devices are dispersedly arranged in various places in the construction area to receive positioning signals;

[0017] The positioning signal processing device is used to calculate the position of the positioning signal transmitting device according to the signal strength of the positioning signal received by the positioning signal receiving device, and use the position of the positioning signal transmitting device as the real-time position of the monitored object.

[0018] Preferably, the positioning signal is a radio signal containing identity information of the monitored object;

[0019] The identification information includes the ID of the monitored object.

[0020] Preferably, calculating the position of the positioning signal transmitting device according to the signal strength of the positioning signal received by the positioning signal receiving device includes:

[0021] Calculate the competitiveness coefficient of the signal strength of each positioning signal respectively;

[0022] Acquire a set U of signal strengths of positioning signals used for positioning based on the competitiveness coefficient;

[0023] Use the positioning algorithm to calculate the elements in U to obtain the position of the positioning signal transmitter.

[0024] Preferably, the process of obtaining the competitiveness coefficient of the signal strength of the positioning signal is as follows:

[0025] Get the minimum circumscribed circle of the construction area;

[0026] Divide the minimum circumscribed circle into M sectors with the same central angle;

[0027] Each sector area is numbered consecutively, the difference between the numbers of two adjacent sector areas is 1, the minimum number is 1, and the maximum number is M;

[0028] The competitiveness factor of the signal strength of the positioning signal is determined as follows:

[0029] For the positioning signal S, when all positioning signal receiving devices receive S, the signal strength of S is stored in the set SU;

[0030] Set the competitiveness coefficient of the maximum signal strength in SU to 1;

[0031] For other signal strengths of SU, the competitiveness coefficient is calculated using the following formula:

[0032]

[0033] comp z represents the competitiveness coefficient of signal strength z, sigstr z Indicates the signal strength value of signal strength z, sigstr max Indicates the preset signal strength value, min(numdp 1 ,numdp 2 ) means to get numdp 1 and numdp 2 The smaller value of numdp 1 =|num z -num cmp |, num z Indicates a positioning signal receiving device M z The number of the sector area, M z is the positioning signal receiving device corresponding to the signal strength z, num cmp Indicates a positioning signal receiving device M cmp The number of the sector area, M cmp The positioning signal receiving device corresponding to the maximum signal strength; numdp 2 =M-num z -num cmp |;SNR z Indicates M z When S is received, the signal-to-noise ratio of S, SNR max represents a preset signal-to-noise ratio, and λ1, λ2 and λ3 represent a preset intensity value weight, a number weight and a signal-to-noise ratio weight, respectively.

[0034] Preferably, obtaining a set U of signal strengths of positioning signals used for positioning based on the competitiveness coefficient includes:

[0035] The top three signal strengths with the largest competitiveness coefficients are stored in set U.

[0036] Preferably, using a positioning algorithm to calculate the elements in U to obtain the position of the positioning signal transmitting device includes:

[0037] Calculate the distance corresponding to each signal strength in U respectively;

[0038] Based on the calculated distance and the position of the positioning signal receiving device corresponding to each signal strength in U, the position of the positioning signal transmitting device is calculated using a triangulation positioning algorithm.

[0039] Preferably, flying to the air above the real-time location and acquiring a monitoring image of the real-time location includes:

[0040] Stay above the real-time location for a preset time, and within the preset time, use a fixed shooting interval to obtain monitoring images of the area where the real-time location is located;

[0041] After the total stay time exceeds the preset duration, the drone returns to the take-off point.

[0042] Preferably, judging whether the warning condition is met according to the monitoring image includes:

[0043] Obtaining the positions of all monitored objects in the monitoring image;

[0044] According to the acquired position, it is determined whether the monitored object is within the electronic fence. If so, it means that the warning condition is met. If not, it means that the warning condition is not met.

[0045] Preferably, obtaining the positions of all monitored objects in the monitoring image includes:

[0046] Use image algorithms to obtain all monitored objects in the monitoring image;

[0047] Get the position of each monitored object separately.

[0048] Beneficial effects:

[0049] Compared with the prior art, in addition to using real-time positioning technology to obtain the monitored object, the present invention also uses a drone to fly over the real-time position to obtain monitoring images, and then judges whether the warning conditions are met based on the monitoring images. In this way, when there is electromagnetic interference in the construction site, which leads to a large positioning offset, the probability of false alarms can be effectively reduced, and the probability of false alarms taking up the processing time of management personnel can be effectively reduced, thereby making it possible to more effectively and timely manage the prevention of electric shock at the construction site of the power project. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0051] Figure 1 A schematic diagram of a power engineering safety anti-electric shock monitoring system of the present invention.

[0052] Figure 2 A schematic diagram of a process for calculating the position of a positioning signal transmitting device according to the present invention. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] like Figure 1 , the present invention provides a power engineering safety anti-electric shock monitoring system, including a wireless positioning module, an image monitoring module and an early warning prompt module;

[0055] The wireless positioning module is used to obtain the real-time position of the monitored object using radio technology;

[0056] The image monitoring module is used to obtain a monitoring image of the real-time position when the distance between the real-time position of the object and the edge of the set electronic fence is less than a set distance threshold;

[0057] The early warning prompt module is used to determine whether the early warning conditions are met based on the monitoring image. If so, a warning prompt is issued to the monitored object;

[0058] Among them, the image monitoring module includes electronic fence setting equipment, distance calculation equipment and drones;

[0059] The electronic fence setting device is used to set the electronic fence and distance threshold. The area corresponding to the electronic fence can completely include the electrified area of ​​the construction site;

[0060] The distance calculation device is used to calculate the shortest distance between the real-time position of the object and the electronic fence, and the shortest distance is used as the distance between the real-time position of the object and the edge of the set electronic fence;

[0061] The drone is used to fly over the real-time location of the object and obtain a monitoring image of the real-time location when the distance between the real-time location of the object and the edge of the set electronic fence is less than a set location threshold.

[0062] Compared with the prior art, in addition to using real-time positioning technology to obtain the monitored object, the present invention also uses a drone to fly over the real-time position to obtain monitoring images, and then judges whether the warning conditions are met based on the monitoring images. In this way, when there is electromagnetic interference in the construction site, which leads to a large positioning offset, the probability of false alarms can be effectively reduced, and the probability of false alarms taking up the processing time of management personnel can be effectively reduced, thereby making it possible to more effectively and timely manage the prevention of electric shock at the construction site of the power project.

[0063] Preferably, the wireless positioning module includes a positioning signal transmitting device, a positioning signal receiving device and a positioning signal processing device;

[0064] The positioning signal transmitting device is carried by the monitored object and is used to transmit the positioning signal;

[0065] Positioning signal receiving devices are dispersedly arranged in various places in the construction area to receive positioning signals;

[0066] The positioning signal processing device is used to calculate the position of the positioning signal transmitting device according to the signal strength of the positioning signal received by the positioning signal receiving device, and use the position of the positioning signal transmitting device as the real-time position of the monitored object.

[0067] Specifically, the positioning signal processing device processes the signal strength of the same positioning signal received by multiple positioning signal receiving devices. Since the positioning signal usually contains the information of the positioning signal transmitting device, the monitored object carrying the positioning signal transmitting device can be determined through the information of the positioning signal transmitting device, so that the position of the positioning signal transmitting device can be used as the position of the monitored object.

[0068] The positioning signal processing device measures the strength of the positioning signal while receiving the positioning signal.

[0069] Preferably, the positioning signal is a radio signal containing identity information of the monitored object;

[0070] The identification information includes the ID of the monitored object.

[0071] Specifically, the ID of the monitored object can be written into the positioning signal transmitting device in advance for storage, so that the corresponding monitored object can be determined by the ID. For example, when the monitored object is a construction worker, the ID can be the employee number of the construction worker. When the monitored object is construction equipment, the ID can be the equipment number of the construction equipment.

[0072] In the present invention, the distance threshold may be 3 meters.

[0073] Calculate the shortest distance between the object's real-time location and the electronic fence, including:

[0074] The distance between the real-time position of the object and each sampling point of the edge of the electronic fence is calculated respectively, and the minimum value of all the distances obtained is taken as the shortest distance.

[0075] Specifically, a sampling point may be set at an interval of 1 meter at the edge of the electronic fence, that is, the length of the portion of the electronic fence passing through two adjacent sampling points is 1 meter.

[0076] Preferably, if Figure 2 , calculating the position of the positioning signal transmitting device according to the signal strength of the positioning signal received by the positioning signal receiving device, including:

[0077] Calculate the competitiveness coefficient of the signal strength of each positioning signal respectively;

[0078] Acquire a set U of signal strengths of positioning signals used for positioning based on the competitiveness coefficient;

[0079] Use the positioning algorithm to calculate the elements in U to obtain the position of the positioning signal transmitter.

[0080] Different from the prior art, the present invention does not directly use the first few signal strengths with the largest values ​​for positioning. This is because, if the positions of the positioning signal receiving devices corresponding to the first few signal strengths with the largest values ​​are closer, the probability that the signal strength is affected by the multipath effect is greater, and the positioning accuracy is lower. Therefore, the present invention uses the competitiveness coefficient to screen the signal strength, which can effectively reduce the impact of the multipath effect and improve the positioning accuracy.

[0081] Preferably, the process of obtaining the competitiveness coefficient of the signal strength of the positioning signal is as follows:

[0082] Get the minimum circumscribed circle of the construction area;

[0083] Divide the minimum circumscribed circle into M sectors with the same central angle;

[0084] Each sector area is numbered consecutively, the difference between the numbers of two adjacent sector areas is 1, the minimum number is 1, and the maximum number is M;

[0085] The competitiveness factor of the signal strength of the positioning signal is determined as follows:

[0086] For the positioning signal S, when all positioning signal receiving devices receive S, the signal strength of S is stored in the set SU;

[0087] Set the competitiveness coefficient of the maximum signal strength in SU to 1;

[0088] For other signal strengths of SU, the competitiveness coefficient is calculated using the following formula:

[0089]

[0090] comp z represents the competitiveness coefficient of signal strength z, sigstr z Indicates the signal strength value of signal strength z, sigstr max Indicates the preset signal strength value, min(numdp 1 ,numdp 2 ) means to get numdp 1 and numdp 2 The smaller value of numdp 1 =|num z -num cmp |, num z Indicates a positioning signal receiving device M z The number of the sector area, M z is the positioning signal receiving device corresponding to the signal strength z, num cmp Indicates a positioning signal receiving device M cmp The number of the sector area, M cmp The positioning signal receiving device corresponding to the maximum signal strength; numdp 2 =M-|num z -num cmp |;SNR z Indicates M z When S is received, the signal-to-noise ratio of S, SNR max represents a preset signal-to-noise ratio, and λ1, λ2 and λ3 represent a preset intensity value weight, a number weight and a signal-to-noise ratio weight, respectively.

[0091] When calculating the competitiveness coefficient, the present invention divides the construction area into a plurality of sector areas, and compares the difference between the numbers of the sector areas to which the positioning signal receiving devices corresponding to the signal strengths belong instead of directly comparing the distances between the positioning signal receiving devices corresponding to the signal strengths. In addition, the present invention also introduces the signal-to-noise ratio in the calculation process of the competitiveness coefficient. Therefore, when M z and M cmp The greater the difference in direction between them, the z The greater the signal strength of the positioning signal S detected, the greater the z The greater the signal-to-noise ratio of the received positioning signal S, the greater the competitiveness coefficient of the signal strength z. Therefore, when the signal strength is screened based on the competitiveness coefficient, the signal strength detected by the positioning signal receiving device with a greater direction difference from the positioning signal receiving device corresponding to the maximum signal strength can be more effectively screened out for positioning, thereby effectively reducing the impact of multipath paths and improving positioning accuracy.

[0092] In the present invention, the value of M may be 12, that is, the center angle of each sector area is 30°. The center of the circle where all the sector areas are located is the center of the minimum circumscribed circle.

[0093] In the present invention, the process of obtaining the minimum circumscribed circle of the construction area is:

[0094] In the construction site, a curve is used to represent the edge of the construction area, and the closed area enclosed by the curve is represented as AR;

[0095] Get the minimum circumscribed circle of AR.

[0096] In the present invention, the preset signal strength value may be the signal strength of the positioning signal emitted by the positioning signal transmitting device and received by the positioning signal transmitting device when the distance between the positioning signal transmitting device and the positioning signal receiving device is equal to 0.5 meters and there is no obstruction between the two.

[0097] In the present invention, the positioning signal receiving device corresponding to the signal strength z refers to the positioning signal receiving device that detects that the signal strength of the positioning signal S is z when receiving the positioning signal S.

[0098] In the present invention, the preset signal-to-noise ratio is 100 dB.

[0099] In the present invention, the preset intensity value weight, number weight and signal-to-noise ratio weight may be 0.3, 0.5 and 0.2 respectively.

[0100] Preferably, obtaining a set U of signal strengths of positioning signals used for positioning based on the competitiveness coefficient includes:

[0101] The top three signal strengths with the largest competitiveness coefficients are stored in set U.

[0102] Preferably, using a positioning algorithm to calculate the elements in U to obtain the position of the positioning signal transmitting device includes:

[0103] Calculate the distance corresponding to each signal strength in U respectively;

[0104] Based on the calculated distance and the position of the positioning signal receiving device corresponding to each signal strength in U, the position of the positioning signal transmitting device is calculated using a triangulation positioning algorithm.

[0105] In the present invention, the position of the positioning signal receiving device can be determined after the positioning signal receiving device is installed.

[0106] Preferably, when calculating the distance based on the signal strength, the distance is calculated based on the following model:

[0107]

[0108] Wherein, strrcp represents the signal strength of the positioning signal received by the positioning signal receiving device, strds represents the signal strength of the positioning signal sent by the positioning signal transmitting device when the positioning signal receiving device is at a distance of ds, and n new represents the control coefficient corresponding to the positioning signal receiving device, and d represents the value to be solved, that is, the distance between the positioning signal receiving device and the positioning signal transmitting device.

[0109] When calculating the distance, the present invention does not use the same control coefficient for all positioning signal receiving devices, but calculates the distance by respectively obtaining the control coefficient corresponding to each positioning signal receiving device. In this way, the control coefficient can better reflect the shielding conditions and multipath effects around the positioning signal receiving device, so that the calculated distance refers to more actual electromagnetic environment information and is more accurate, which is conducive to obtaining a more accurate real-time position of the monitored object.

[0110] Preferably, the control coefficient is determined as follows:

[0111] At fixed time intervals, a correction signal is emitted at the center of the minimum circumscribed circle;

[0112] Use the following formula to calculate the control coefficient corresponding to the positioning signal receiving device when the correction signal is received:

[0113]

[0114] n srrepresents the control coefficient corresponding to the positioning signal receiving device when the correction signal is received, strsr represents the signal strength of the correction signal received by the positioning signal receiving device, and dr represents the distance between the positioning signal receiving device and the center of the minimum circumscribed circle;

[0115] Calculate n using the following formula new :

[0116]

[0117] P represents the preset range parameter, k represents the total number of cumulative transmission of the correction signal, and n sr,i It represents the control coefficient corresponding to the positioning signal receiving device when the correction signal is transmitted for the i-th time.

[0118] The control coefficient corresponding to the signal receiving device of the present invention is not determined by a single calculation, but by controlling the number of control coefficients corresponding to the positioning signal receiving device when receiving the correction signal participating in the calculation through the range coefficient, and then based on the difference between i and k, it is n. sr,i Set the corresponding influence weight so that the smaller the absolute value of the difference between i and k, the greater the value of n sr,i The larger the corresponding influence weight, the more nearest n can be referenced. sr,i To calculate n new , so that n new It is more representative and real-time, and improves the accuracy of the final calculated distance d.

[0119] In the present invention, the preset range coefficient may be 5.

[0120] In the present invention, the fixed time length may be 1 day.

[0121] Preferably, flying to the air above the real-time location and acquiring a monitoring image of the real-time location includes:

[0122] Stay above the real-time location for a preset time, and within the preset time, use a fixed shooting interval to obtain monitoring images of the area where the real-time location is located;

[0123] After the total stay time exceeds the preset duration, the drone returns to the take-off point.

[0124] By staying for a certain period of time, timely warnings can be issued when the construction workers are within the electronic fence.

[0125] In the present invention, the preset duration may be 10 minutes and the fixed shooting interval may be 5 seconds.

[0126] Preferably, judging whether the warning condition is met according to the monitoring image includes:

[0127] Obtaining the positions of all monitored objects in the monitoring image;

[0128] According to the acquired position, it is determined whether the monitored object is within the electronic fence. If so, it means that the warning condition is met. If not, it means that the warning condition is not met.

[0129] In the present invention, the position of the pixel point at the center of the area corresponding to the monitored object in the monitoring image in the real physical world can be used as the position of the monitored object, so as to determine whether the monitored object is within the electronic fence.

[0130] Preferably, obtaining the positions of all monitored objects in the monitoring image includes:

[0131] Use image algorithms to obtain all monitored objects in the monitoring image;

[0132] Get the position of each monitored object separately.

[0133] In the present invention, an image algorithm is used to obtain all monitored objects in the monitoring image, including:

[0134] An image segmentation algorithm is used to obtain the foreground area in the monitoring image;

[0135] Determine whether each foreground area belongs to the monitored object.

[0136] For example, if there are multiple construction workers in the detection image at the same time, after obtaining multiple foreground areas through the image segmentation algorithm, it is determined whether there is a monitored object in the foreground area by judging whether the foreground area contains construction workers.

[0137] Specifically, it is possible to determine whether the foreground area belongs to the monitored object by extracting features of the foreground area.

[0138] For example, it is possible to determine whether there are construction workers in the foreground area based on the features of the foreground area.

[0139] Preferably, issuing an early warning prompt to the monitored object includes:

[0140] The positioning signal transmitting device is controlled to emit a warning sound to provide an early warning to the monitored object.

[0141] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A power engineering safety anti-electric shock monitoring system, characterized in that: Including wireless positioning module, image monitoring module and early warning prompt module; The wireless positioning module is used to obtain the real-time position of the monitored object using radio technology; The image monitoring module is used to obtain a monitoring image of the real-time position when the distance between the real-time position of the object and the edge of the set electronic fence is less than a set distance threshold; The early warning prompt module is used to determine whether the early warning conditions are met based on the monitoring image. If so, a warning prompt is issued to the monitored object; Among them, the image monitoring module includes electronic fence setting equipment, distance calculation equipment and drones; The electronic fence setting device is used to set the electronic fence and distance threshold. The area corresponding to the electronic fence can completely include the electrified area of ​​the construction site; The distance calculation device is used to calculate the shortest distance between the real-time position of the object and the electronic fence, and the shortest distance is used as the distance between the real-time position of the object and the edge of the set electronic fence; The drone is used to fly over the real-time location of the object and obtain a monitoring image of the real-time location when the distance between the real-time location of the object and the edge of the set electronic fence is less than a set location threshold.

2. The power engineering safety anti-electric shock monitoring system according to claim 1 is characterized in that: The wireless positioning module includes a positioning signal transmitting device, a positioning signal receiving device and a positioning signal processing device; The positioning signal transmitting device is carried by the monitored object and is used to transmit the positioning signal; Positioning signal receiving devices are dispersedly arranged in various places in the construction area to receive positioning signals; The positioning signal processing device is used to calculate the position of the positioning signal transmitting device according to the signal strength of the positioning signal received by the positioning signal receiving device, and use the position of the positioning signal transmitting device as the real-time position of the monitored object.

3. The power engineering safety anti-electric shock monitoring system according to claim 2 is characterized in that: The positioning signal is a radio signal containing the identity information of the monitored object; The identification information includes the ID of the monitored object.

4. The power engineering safety anti-electric shock monitoring system according to claim 2 is characterized in that: Calculating the position of the positioning signal transmitting device according to the signal strength of the positioning signal received by the positioning signal receiving device includes: Calculate the competitiveness coefficient of the signal strength of each positioning signal respectively; Acquire a set U of signal strengths of positioning signals used for positioning based on the competitiveness coefficient; Use the positioning algorithm to calculate the elements in U to obtain the position of the positioning signal transmitter.

5. The power engineering safety anti-electric shock monitoring system according to claim 4 is characterized in that: The process of obtaining the competitiveness coefficient of the signal strength of the positioning signal is as follows: Get the minimum circumscribed circle of the construction area; Divide the minimum circumscribed circle into M sectors with the same central angle; Each sector area is numbered consecutively, the difference between the numbers of two adjacent sector areas is 1, the minimum number is 1, and the maximum number is M; The competitiveness factor of the signal strength of the positioning signal is determined as follows: For the positioning signal S, when all positioning signal receiving devices receive S, the signal strength of S is stored in the set SU; Set the competitiveness coefficient of the maximum signal strength in SU to 1; For other signal strengths of SU, the competitiveness coefficient is calculated using the following formula: comp z represents the competitiveness coefficient of signal strength z, sigstr z Indicates the signal strength value of signal strength z, sigstr max Indicates the preset signal strength value. min(numdp1,numdp2) means obtaining the smaller value of numdp1 and numdp2. numdp1= | num z -num cmp | , num z Indicates a positioning signal receiving device M z The number of the sector area, M z is the positioning signal receiving device corresponding to the signal strength z, num cmp Indicates a positioning signal receiving device M cmp The number of the sector area, M cmp The positioning signal receiving device corresponding to the maximum signal strength; numdp2 = M-num z -num cmp | ; SNR z Indicates M z When S is received, the signal-to-noise ratio of S, SNR max represents a preset signal-to-noise ratio, and λ1, λ2 and λ3 represent a preset intensity value weight, a number weight and a signal-to-noise ratio weight, respectively.

6. The electric power engineering safety anti-electric shock monitoring system according to claim 5 is characterized in that: A set U of signal strengths of positioning signals used for positioning is obtained based on the competitiveness coefficient, including: The top three signal strengths with the largest competitiveness coefficients are stored in set U.

7. The power engineering safety anti-electric shock monitoring system according to claim 4 is characterized in that: Use the positioning algorithm to calculate the elements in U to obtain the position of the positioning signal transmitter, including: Calculate the distance corresponding to each signal strength in U respectively; Based on the calculated distance and the position of the positioning signal receiving device corresponding to each signal strength in U, the position of the positioning signal transmitting device is calculated using a triangulation positioning algorithm.

8. The power engineering safety anti-electric shock monitoring system according to claim 1 is characterized in that: Fly above the real-time location and obtain monitoring images of the real-time location, including: Stay above the real-time location for a preset time, and within the preset time, use a fixed shooting interval to obtain monitoring images of the area where the real-time location is located; After the total stay time exceeds the preset duration, the drone returns to the take-off point.

9. The power engineering safety anti-electric shock monitoring system according to claim 1 is characterized in that: Determine whether the warning conditions are met based on the monitoring images, including: Obtaining the positions of all monitored objects in the monitoring image; According to the acquired position, it is determined whether the monitored object is within the electronic fence. If so, it means that the warning condition is met. If not, it means that the warning condition is not met.

10. The power engineering safety anti-electric shock monitoring system according to claim 1, characterized in that: Get the positions of all monitored objects in the monitoring image, including: Use image algorithms to obtain all monitored objects in the monitoring image; Get the position of each monitored object separately.

Images