Perimeter safety protection device for power ring main unit

Abstract

The invention provides a perimeter safety protection device for an electric power ring main unit, and the device comprises a radar module which is used for detecting whether there is a person approaching in real time, and outputting a corresponding activation signal to a video collection module when detecting that there is a person entering a preset detection range; the video acquisition module is used for responding to the corresponding activation signal to start and acquiring video data in a preset detection range; the data processing unit is used for carrying out feature extraction on the collected video data through a pre-trained intelligent model, identifying the entering personnel according to the extracted features, and carrying out graded alarm when an abnormal condition is identified; wherein the intelligent model is at least used for face recognition, safety helmet detection and tool detection, and recognizing a power grid work ticket code under the condition of network security permission. According to the invention, the target identification accuracy is improved, and the false alarm rate is reduced; remote safety standard work reminding is achieved, and personal safety of personnel and power property safety are protected.

Description

Technical Field

[0001] The present invention relates to the technical field of power system automation, and particularly to a perimeter security prevention device for a power ring main unit. Background Art

[0002] With the intensification of urban infrastructure, a large number of power ring main units are exposed in public areas. Existing perimeter protection technologies have the following problems: high false alarm rate: unable to distinguish between external personnel and power workers, resulting in ineffective alarms; detection blind spots: relying on a single sensor (such as a camera or an infrared sensor), vulnerable to light and weather interference, with a high missed alarm rate at night or in harsh environments; passive protection: unable to give an active warning when a traditional physical fence is damaged, and unable to link with sound and light warnings. Summary of the Invention

[0003] The purpose of the present invention is to provide a perimeter security prevention device for a power ring main unit to solve the technical problem of how to achieve active security prevention of the perimeter of the power ring main unit.

[0004] On the one hand, a perimeter security prevention device for a power ring main unit is provided, including:

[0005] A radar module for detecting in real time whether there are people approaching, and when it detects that a person enters a preset detection range, outputting a corresponding activation signal to the video acquisition module;

[0006] A video acquisition module for starting in response to the corresponding activation signal and collecting video data within the preset detection range;

[0007] A data processing unit for extracting features from the collected video data through a pre-trained intelligent model, identifying the entering personnel according to the extracted features, and giving a hierarchical alarm when an abnormal situation is identified; wherein, the intelligent model is at least used for face recognition, safety helmet detection and work clothing detection, and identifying the power grid work ticket code when network security permits.

[0008] Preferably, it further includes a communication module for obtaining work ticket information from the background and transmitting it to the data processing unit, and outputting an alarm signal to the background.

[0009] Preferably, the data processing unit is further used for extracting operator information from the work ticket information and storing the operator information in a preset storage unit.

[0010] Preferably, the data processing unit is further used for extracting the facial features of the personnel captured by the video acquisition module through a preset algorithm, and comparing the extracted features with the facial features in the operator information extracted from the work ticket information to determine whether the person is an authorized person.

[0011] Preferably, the data processing unit is further configured to identify the face of an authorized person, and determine whether the authorized person entering the preset perimeter protection area wears a safety helmet and work protective clothing according to the recognition result; if the safety helmet or work protective clothing is not worn, an alarm signal is generated.

[0012] Preferably, the data processing unit is further configured to compare the extracted features with the information of the operating personnel, and compare the comparison result with a preset rule;

[0013] If it is determined that the approaching person is an unauthorized person, a first-level alarm is given through local audible and visual warnings;

[0014] If it is determined that an unauthorized person enters the preset perimeter area, a second-level alarm is given through local audible and visual warnings and background push of alarm information.

[0015] Preferably, it further includes an audible and visual alarm module for outputting and performing corresponding audible and visual alarm actions according to the received alarm signal.

[0016] Preferably, it further includes a power supply module for converting the input external voltage signal into the voltage output required by other functional modules; and supplying power to other functional modules through a built-in storage battery when the input of the external voltage signal is cut off.

[0017] In summary, implementing the embodiments of the present invention has the following beneficial effects:

[0018] The perimeter security prevention device for a power ring main unit provided by the present invention improves the target recognition accuracy and reduces the false alarm rate through the fusion of radar and video; the combination of audible and visual warnings and remote shouting actively monitors non-standard operating behaviors and prevents dangerous behaviors in advance; it supports linkage with the power grid work ticket system to verify the identity of operating personnel and construction tasks, realizes remote safety and standard work reminders, and protects the personal safety of personnel and the safety of electric power property. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present invention.

[0020] Figure 1 It is a schematic diagram of a perimeter security prevention device for a power ring main unit in an embodiment of the present invention.

[0021] Figure 2Schematic diagram of the working process of a perimeter security prevention device for a power ring main unit in an embodiment of the present invention. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] As Figure 1 and Figure 2 shown, it is a schematic diagram of an embodiment of a perimeter security prevention device for a power ring main unit provided by the present invention. In this embodiment, it includes:

[0024] A radar module for detecting in real time whether there are people approaching. When it detects that a person enters a preset detection range, it outputs a corresponding activation signal to the video acquisition module; a video acquisition module for starting in response to the corresponding activation signal and collecting video data within the preset detection range; a data processing unit for extracting features from the collected video data through a pre-trained intelligent model and identifying the entering personnel according to the extracted features. When an abnormal situation is identified, it performs hierarchical warning. Among them, the intelligent model is at least used for face recognition, safety helmet detection and work clothing detection, and identifies the power grid work ticket code when network security permits. In this embodiment, the millimeter-wave radar module detects in real time whether there are people approaching. When it detects that someone enters the detection range, it activates the video acquisition module to collect video data, realizes the fusion analysis of the point cloud data of the radar and the image data of the video, so as to submit the perception and early warning of the abnormal environment around the power equipment. The data processing unit uses a pre-trained intelligent model to extract features from the collected video data. The analysis of the intelligent model includes at least face recognition, safety helmet detection, work clothing detection, and identifies the power grid work ticket code when network security permits. Among them, the millimeter-wave radar module: the working frequency is 24 - 30 GHz, the detection distance is 50 m, it supports target trajectory tracking and perimeter setting; the video acquisition module: integrates a 4-megapixel low-light camera, supports H.265 encoding and infrared night vision; the data processing unit: is equipped with an edge computing chip and runs a target recognition algorithm (YOLOv5) and a behavior analysis model.

[0025] An embodiment further includes a communication module for obtaining work ticket information from the background and transmitting it to the data processing unit, and outputting an alarm signal to the background. The fusion communication module realizes obtaining work ticket information from the background and transmitting it to the data processing unit. The data processing unit extracts operator information from the work ticket information and stores the operator information in the data processing unit. The communication module: supports 4G / 5G, LoRa multi-mode communication and realizes real-time interaction with the cloud platform.

[0026] In one embodiment, the data processing unit is further used to extract operator information from the work ticket information and store the operator information in a preset storage unit. The data processing module is connected to the background system through the communication module, and is linked with the work ticket system to obtain the authorized staff information through the work ticket information, and extract the authorized staff facial feature information through the pre-trained face recognition algorithm and store it in the data processing unit.

[0027] In one embodiment, the data processing unit is also used to extract the facial features of the personnel captured by the video acquisition module through a preset algorithm, and compare the extracted features with the facial features of the operator information extracted from the work ticket information to determine whether it is an authorized person. The data processing unit is also used to identify the face of the authorized person, and determine whether the authorized person entering the preset perimeter protection area is wearing a safety helmet or work protective clothing according to the recognition result; if the safety helmet or work protective clothing is not worn, an alarm signal is generated. That is, after the video acquisition module receives the information from the radar module, it starts the video acquisition work, and links the data processing module to analyze and compare through the algorithm, extract the facial features of the personnel captured by the video acquisition module through the pre-trained face recognition algorithm, and compare the extracted features with the facial features of the authorized staff obtained from the work ticket information to determine whether it is an authorized person, effectively identify the face of the authorized person, determine whether the authorized person entering the perimeter protection area is wearing a safety helmet, work protective clothing, etc., and identify the power grid work ticket code when network security allows. When it is determined that the person entering the defense area is an authorized person, further analysis is performed to determine whether he or she is wearing a safety helmet and work clothes as required. If the safety clothing requirements are not met, the sound and light alarm device can be linked to remind the person to wear a safety helmet and work clothes when entering the work area, thereby realizing remote safety and standardized work reminders and reporting alarm information to the background.

[0028] In one embodiment, the data processing unit is also used to compare the extracted features with the operator information, and compare the comparison results with the preset rules; if it is determined that the approaching person is an unauthorized person, a first-level alarm is issued through a local sound and light alarm; if it is determined that the unauthorized person enters the preset perimeter area, a second-level alarm is issued through a local sound and light alarm and a background push alarm information. That is, the data processing unit issues graded alarms according to the preset rules: first-level alarm (unauthorized person approaches): local sound and light alarm; second-level alarm (unauthorized person enters the perimeter area): local sound and light alarm + linkage background push alarm information to the operation and maintenance personnel's mobile phone.

[0029] One embodiment further includes an audible and visual alarm module, which is used to output and execute a corresponding audible and visual alarm action according to the received alarm signal. The audible and visual alarm module includes a high-brightness LED warning light and a pre-recorded voice system, and supports remote shouting.

[0030] An embodiment further includes a power supply module, which is used to convert the input of the external voltage signal into the voltage output required by other functional modules; and supply power to other functional modules through the built-in storage battery when the input of the external voltage signal is cut off. It supports dual power supply of commercial power and solar energy, and is built with a 20AH backup lithium battery. The entire device is powered by the power supply module. The power supply module uses AC220V input, converts it into the voltage required by other functional modules for work orders. At the same time, the power supply module is built with a storage battery, and when the AC220V input is cut off, the built-in storage battery can be used to supply power to other functional modules.

[0031] In summary, implementing the embodiments of the present invention has the following beneficial effects:

[0032] The perimeter security prevention device for power ring main units provided by the present invention improves the target recognition accuracy and reduces the false alarm rate through the fusion of radar and video; combines audible and visual warnings with remote shouting, actively monitors non-standard operation behaviors, and prevents dangerous behaviors in advance; supports linkage with the power grid work ticket system, verifies the identities of operators and construction tasks, realizes remote safety and standard work reminders, and protects the personal safety of personnel and the safety of power property.

[0033] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A perimeter security device for a power ring network cabinet, characterized in that: include: The radar module is used to detect in real time whether there is a person approaching. When a person is detected entering the preset detection range, the corresponding activation signal is output to the video acquisition module; The video acquisition module is used to start in response to the corresponding activation signal and to acquire video data within a preset detection range; The data processing unit is used to extract features from the collected video data through a pre-trained intelligent model, and identify the people entering based on the extracted features. When an abnormal situation is identified, a graded alarm is issued; wherein the intelligent model is used at least for face recognition, helmet detection and workwear detection, and identifies the power grid work ticket code when network security permits.

2. The device according to claim 1, characterized in that It also includes a communication module, which is used to obtain work ticket information from the background and transmit it to the data processing unit, and output an alarm signal to the background.

3. The device according to claim 2, characterized in that The data processing unit is also used to extract operator information from the work ticket information and store the operator information in a preset storage unit.

4. The device according to claim 3, characterized in that The data processing unit is also used to extract facial features of the person captured by the video acquisition module through a preset algorithm, and compare the extracted features with facial features in the operator information extracted from the work ticket information to determine whether the person is an authorized person.

5. The device according to claim 4, characterized in that The data processing unit is also used to identify the face of the authorized personnel and determine whether the authorized personnel entering the preset perimeter protection area are wearing a safety helmet or work protective clothing based on the identification result; if they are not wearing a safety helmet or work protective clothing, an alarm signal is generated.

6. The device according to claim 5, characterized in that The data processing unit is also used to compare the extracted features with the operator information, and compare the comparison results with the preset rules; If it is determined that the approaching person is an unauthorized person, a level 1 alarm will be issued through local sound and light alarms; If it is determined that unauthorized personnel have entered the preset perimeter area, a secondary alarm will be issued through local sound and light alarms and background push alarm information.

7. The device according to claim 6, characterized in that It also includes an audible and visual alarm module, which is used to output and execute corresponding audible and visual alarm actions according to the received alarm signal.

8. The device according to claim 7, characterized in that It also includes a power supply module, which is used to convert the external voltage signal input into the voltage output required by other functional modules; and to supply power to other functional modules through the built-in battery when the external voltage signal input is powered off.

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