Hand-held pressure plate auxiliary detection device

Abstract

The invention discloses a handheld pressure plate auxiliary detection device, which relates to the technical field of electric power detection and comprises a handheld terminal, a data transmission platform and a data processing terminal. The pressing plate image and the corresponding two-dimensional code image data are captured through the handheld terminal and sent to the data processing terminal through the data transmission platform to be analyzed and processed so as to detect whether the on-off state of the pressing plate is abnormal or not and feed back the abnormal state to the handheld terminal, auxiliary detection work of the pressing plate is achieved, and compared with traditional manual work, the method is more convenient, and the efficiency is improved. The on-off state of the electric power secondary pressing plate is accurately identified, the safety and reliability of operation of a transformer substation are improved, the practical significance is high, meanwhile, the phenomena of missing operation and misoperation of the pressing plate can be avoided, the safety and stability of an electric power system of the transformer substation are guaranteed, compared with traditional equipment detection, the informatization and intelligence level is relatively high, and the practicability is high. And the method can be matched with the overall intelligent level of the substation.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power detection, and in particular to a handheld pressure plate auxiliary detection device. Background Art

[0002] Smart substation refers to the use of advanced, reliable, integrated and environmentally friendly smart equipment. In order to promote the safe, stable and efficient operation of smart substations, it is necessary to effectively improve the operation and maintenance level of secondary equipment, especially the inspection level of relay protection devices. Relay protection devices are key equipment in smart substations for detecting and responding to faults or abnormal conditions. The main function of relay protection devices is to send out alarm signals when a fault is detected or to isolate and remove the faulty part from the system to protect the power system and its components from damage. The secondary equipment panel cabinet of smart substation is an indispensable part of the power system. With the development of the power system, the structure of the secondary equipment panel cabinet has become more and more complex, and the number of pressure plates is also increasing. The management of protection pressure plates is an important part of the inspection work of relay protection devices.

[0003] The existing secondary equipment pressure plate detection work is mainly divided into manual detection and equipment detection. During manual detection, due to visual fatigue, memory confusion and other reasons, the pressure plate may be missed or misoperated from time to time. Equipment detection mainly adopts intelligent detection method, but this method requires panel cabinet modification, which increases the complexity and cost of the equipment and cannot provide effective technical support for the intelligent construction and operation of substations. Therefore, the present invention proposes a handheld pressure plate auxiliary detection device to solve the problems existing in the prior art. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to propose a handheld pressure plate auxiliary detection device to solve the existing secondary equipment pressure plate detection work. During manual detection, it is easy to cause visual fatigue, memory confusion and other reasons, which leads to the phenomenon of missed operation and wrong operation of the pressure plate. The existing intelligent detection method requires screen cabinet modification, which increases the complexity and cost of the equipment.

[0005] In order to achieve the purpose of the present invention, the present invention is implemented through the following technical solutions: a handheld pressure plate auxiliary detection device, including a handheld terminal, a data transmission platform and a data processing terminal, the handheld terminal includes a handheld device, a data acquisition module, a data display module and a power supply module, the data acquisition module includes an image sensor for collecting pressure plate image data, a data preprocessing unit for preprocessing the collected image data and a signal sending chip for sending the digital signal obtained after preprocessing to the data transmission platform;

[0006] The handheld terminal performs wireless data communication with the data processing terminal through a data transmission platform, wherein the data transmission platform includes a communication detection module for detecting the communication signal strength in the substation area, a wireless communication module for providing different communication transmission modes, and a cloud database for cloud storage of collected data;

[0007] The data processing terminal includes a signal receiving module for receiving transmission signals from a data transmission platform, a local database for storing standard status data of a pressure plate, and a data analysis module for detecting and analyzing the status of the pressure plate. The signal receiving module includes a signal receiving chip for receiving transmission signals from a data transmission platform, a signal conversion unit for converting the received signal, and a data pre-processing unit for pre-processing the converted data.

[0008] A further improvement is that the housing of the handheld device is designed according to ergonomics and waterproof, the data acquisition module, data display module and power supply module are all installed on the handheld device, and the power supply module is a rechargeable battery and supplies power to the handheld terminal.

[0009] Further improvements are: the image sensor is a high-definition camera, and the image sensor collects the pressure plate image and the QR code ID image corresponding to the pressure plate through the camera driver. The data preprocessing unit denoises the collected image data and converts the denoised image analog signal into a digital signal through an analog-to-digital converter. The signal sending chip uses lossless compression technology to compress and package the converted digital signal and send it to the data transmission platform.

[0010] A further improvement is that the wireless communication module includes a WiFi communication unit for providing WiFi communication connection, a Bluetooth communication unit for providing Bluetooth communication connection and a cellular network communication unit for providing cellular network communication connection; the communication detection module includes a signal monitoring unit for monitoring the strength of WiFi signals, Bluetooth signals and cellular network signals in the substation area and a signal switching unit for switching the communication transmission mode according to the signal strength monitoring result.

[0011] Further improvements are: the signal conversion unit includes an amplifier for amplifying the signal received by the signal receiving chip, a filter for filtering the amplified signal, and a digital-to-analog converter for reconstructing the filtered digital model into image data; the data pre-processing unit uses the trained YoLo v5 algorithm to detect the position of the pressure plate and the QR code in the image data, and screens out the valid pressure plate area image and the QR code area image.

[0012] A further improvement is that the local database stores standard image data of the press plate's entry state and standard image data of the press plate's exit state, the press plate displayed in the standard image data of the press plate's entry state is in an upright state, and the press plate displayed in the standard image data of the press plate's exit state is in an inclined state.

[0013] Further improvements are: the data extraction unit extracts the pressure plate area image processed by the data pre-processing unit and the pressure plate standard state data in the local database, the data comparison unit compares and analyzes the extracted data and detects whether the pressure plate insertion and retraction state is abnormal, the discrimination feature in the analysis process is the direction angle of the pressure plate, and the discrimination basis is the width-to-length ratio of the circumscribed rectangle of the pressure plate, the analysis feedback unit identifies the ID of the QR code image, and binds and pairs the detected pressure plate insertion and retraction state abnormalities with the QR code IDs corresponding to each pressure plate and sends them to the data display module for display.

[0014] A further improvement is that the data display module includes a data conversion unit for data conversion and a liquid crystal display screen for displaying the pressure plate status detection results. The data conversion unit analyzes the pressure plate status detection results sent by the feedback unit and displays them on the liquid crystal display screen in the form of a visual chart.

[0015] The beneficial effects of the present invention are as follows: the present invention captures the pressure plate image and the corresponding two-dimensional code image data through the handheld terminal, and sends it to the data processing terminal for analysis and processing through the data transmission platform, so as to detect whether the pressure plate's throw-in and throw-out status is abnormal and feedback is given to the handheld terminal, thereby realizing pressure plate auxiliary detection work. Compared with traditional manual work, it is more convenient, and can accurately identify the throw-in and throw-out status of the secondary power pressure plate, which helps to improve the safety and reliability of substation operation, and has strong practical significance. At the same time, it can avoid the occurrence of pressure plate leakage and misoperation, and ensure the safety and stability of the substation power system. Compared with traditional equipment detection, there is no need to modify the panel cabinet, and the level of informatization and intelligence is relatively high, which can match the overall intelligence level of the substation and meet the needs of intelligent management of the substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the handheld pressure plate auxiliary detection device of the present invention. DETAILED DESCRIPTION

[0018] 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.

[0019] With the rapid development of my country's economy and society, the structure of the power system is becoming increasingly complex. Especially with the widespread access to intermittent new energy, the safe and stable operation of the power system faces greater challenges. In this context, smart substations with significant advantages are gradually becoming a construction hotspot. Smart substations refer to substations that use advanced, reliable, integrated and environmentally friendly intelligent equipment, with basic requirements such as full-station information digitization, communication platform networking, information sharing standardization, system function integration, compact structural design, high-voltage equipment intelligence and operation status visualization. They can support real-time online analysis and control decisions of the power grid, thereby improving the reliability and economy of the entire power grid operation.

[0020] In order to promote the safe, stable and efficient operation of smart substations, it is necessary to effectively improve the operation and maintenance level of secondary equipment, especially the inspection level of relay protection devices. Relay protection devices are key equipment in smart substations for detecting and responding to faults or abnormal conditions. They achieve this function by monitoring changes in electrical quantities (such as current, voltage, power, frequency) and other physical quantities (such as gas, oil flow rate and oil pressure intensity in the transformer tank). The main function of the relay protection device is to send out an alarm signal when a fault is detected or to isolate and remove the faulty part from the system to protect the power system and its components from damage.

[0021] The secondary equipment cabinets of smart substations are an indispensable part of the power system. They are responsible for measuring, controlling and protecting the primary equipment. With the development of the power system, the structure of the secondary equipment cabinets has become more and more complex, and the number of pressure plates is also increasing. These pressure plates are key components for controlling and isolating circuits. Their existence ensures the safe operation of the power system. Protection pressure plate management is an important part of the inspection of relay protection devices.

[0022] In the existing technology, the informationization and intelligence level of protection pressure plate management is relatively low, which cannot match the overall intelligence level of substation and is difficult to meet the needs of intelligent management of substation. The existing secondary equipment pressure plate detection work is mainly divided into manual detection and equipment detection. During manual detection, due to visual fatigue, memory confusion and other reasons, the pressure plate may be missed or misoperated from time to time, which seriously endangers the safety and stability of the substation power system. Equipment detection is mainly an intelligent detection method, but this method requires panel cabinet modification, which increases the complexity and cost of the equipment and cannot provide effective technical support for the intelligent construction and operation of substations.

[0023] For the problems existing in the above-mentioned prior art, see Figure 1 , the present embodiment provides a handheld pressure plate auxiliary detection device, including a handheld terminal held by an inspection personnel, a data transmission platform providing a wireless data transmission function, and a data processing terminal for analyzing and detecting the pressure plate status, wherein the handheld terminal is composed of a handheld device, a data acquisition module, a data display module, and a power supply module. The housing of the handheld device of the present embodiment is designed according to ergonomics and waterproof, the data acquisition module, the data display module, and the power supply module are all installed on the handheld device, the data acquisition module includes an image sensor, a data preprocessing unit, and a signal sending chip, wherein the image sensor collects the pressure plate image and the corresponding two-dimensional code image data, the data preprocessing unit preprocesses the collected image data, the signal sending chip sends the digital signal obtained after preprocessing to the data transmission platform, the power supply module provides power for each electrical component on the handheld terminal, and the power supply module can be a rechargeable battery, which is easy to charge and can be recycled;

[0024] The handheld terminal is wirelessly connected to the data transmission platform, which consists of a communication detection module, a wireless communication module and a cloud database. The communication detection module detects the communication signal strength in the substation area, the wireless communication module provides different wireless communication transmission paths, and the cloud database stores the data transmitted by the data transmission platform in the cloud for subsequent search of historical data.

[0025] The data transmission platform is wirelessly connected to the data processing terminal, which is composed of a signal receiving module, a local database and a data analysis module. The signal receiving module receives signal data transmitted from the data transmission platform, and the local database is pre-stored by the user with the standard state data of the pressure plate. The data analysis module detects and analyzes the state of the pressure plate according to the collected data. The signal receiving module is composed of a signal receiving chip, a signal conversion unit and a data pre-processing unit. The signal receiving chip receives signal data transmitted from the data transmission platform, and the signal conversion unit re-converts the received signal data into image data. The data pre-processing unit pre-processes the converted data to obtain more accurate image data.

[0026] The image sensor in this embodiment is a high-definition camera. The pressure plate image and the QR code ID image corresponding to the pressure plate are collected through the camera driver. The data preprocessing unit first uses an image denoising algorithm to denoise the collected image data, and then converts the denoised image analog signal into a digital signal through an analog-to-digital converter (A / D conversion). The signal sending chip uses lossless compression technology to compress and package the converted digital signal and send it to the data transmission platform. The signal receiving chip uses lossless decompression technology to decompress the digital signal compression package to improve the data transmission speed.

[0027] The wireless communication module is composed of a WiFi communication unit, a Bluetooth communication unit and a cellular network communication unit, wherein the WiFi communication unit provides a WiFi communication connection path between the handheld terminal and the data processing terminal, the Bluetooth communication unit provides a Bluetooth communication connection path between the handheld terminal and the data processing terminal, and the cellular network communication unit provides a cellular network communication connection path between the handheld terminal and the data processing terminal. The communication detection module is composed of a signal monitoring unit and a signal switching unit. The signal monitoring unit monitors the strength of the WiFi signal, Bluetooth signal and cellular network signal in the substation area. The signal switching unit switches the communication transmission mode according to the signal strength monitoring result. If the WiFi signal is detected to be the strongest, the WiFi communication unit is switched to provide a WiFi communication connection path between the handheld terminal and the data processing terminal. The same applies to Bluetooth signals and cellular network signals.

[0028] The signal conversion unit is composed of an amplifier, a filter and a digital-to-analog converter (D / A conversion), wherein the amplifier amplifies the signal received by the signal receiving chip, the filter filters the amplified signal, the digital-to-analog converter is used to reconstruct the digital model after filtering into image data, and the data pre-processing unit uses the trained YoLo v5 algorithm to detect the position of the pressure plate and QR code in the image data, and screen out the effective pressure plate area image and QR code area image.

[0029] The local database stores standard image data of the press plate's entry state and standard image data of the press plate's exit state, wherein the press plate shown in the standard image data of the press plate's entry state is in an upright state, and the press plate shown in the standard image data of the press plate's exit state is in an inclined state.

[0030] The data extraction unit extracts the pressure plate area image processed by the data pre-processing unit and the pressure plate standard state data in the local database. The data comparison unit uses the direction angle of the pressure plate as a discrimination feature and the width-to-length ratio of the circumscribed rectangle of the pressure plate as a discrimination basis. It compares and analyzes the extracted data and detects whether the pressure plate insertion and retraction state is abnormal. If the processed pressure plate area image does not match the pressure plate standard state data, it indicates that there is an abnormality. The analysis and feedback unit identifies the ID of the QR code image and binds and pairs the detected pressure plate insertion and retraction state abnormality with the QR code ID corresponding to each pressure plate one by one and sends them to the data display module for display, so that the inspection personnel can intuitively understand the abnormal pressure plate state.

[0031] The data display module consists of a data conversion unit and a liquid crystal display screen. The data conversion unit analyzes the pressure plate status detection results sent by the feedback unit and displays them on the liquid crystal display screen in the form of a visual chart for inspection personnel to view so as to intuitively find abnormal pressure plate status.

[0032] In this embodiment, a corresponding QR code sticker is affixed near each group of pressure plates, and one group of pressure plates corresponds to one group of QR code IDs, which is convenient for tracing in the subsequent detection process. When the handheld pressure plate auxiliary detection equipment is actually used, the substation inspection personnel take the handheld terminal, first use the data acquisition module in the handheld terminal to capture the image of the pressure plate to be detected and the corresponding QR code ID image, and send it to the data processing terminal through the data transmission platform in the form of a digital signal, and use the cloud database to back up and store the received data. In the process of providing communication connection on the data transmission platform, the communication detection module is used to monitor the nearby communication signals in real time. , and according to the monitoring results, the wireless communication module is driven to switch to the communication transmission mode with the strongest signal. After the data processing terminal receives the digital signal, the signal receiving module is first used to reconstruct the digital signal into image data, and the image data is detected and processed to screen out the effective pressure plate area image and the QR code area image. Then, based on the pressure plate standard state data pre-stored in the local database, the effective pressure plate area image is analyzed and determined by the data analysis module to detect whether the pressure plate insertion and retraction state is abnormal. Finally, the detected state results are fed back to the data display module for display, so that the inspection personnel can intuitively understand whether the pressure plate state is abnormal.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A handheld pressure plate auxiliary detection device, characterized in that: It includes a handheld terminal, a data transmission platform and a data processing terminal. The handheld terminal includes a handheld device, a data acquisition module, a data display module and a power supply module. The data acquisition module includes an image sensor for acquiring platen image data, a data preprocessing unit for preprocessing the acquired image data and a signal transmission chip for sending the digital signal obtained after preprocessing to the data transmission platform. The handheld terminal performs wireless data communication with the data processing terminal through a data transmission platform, wherein the data transmission platform includes a communication detection module for detecting the communication signal strength in the substation area, a wireless communication module for providing different communication transmission modes, and a cloud database for cloud storage of collected data; The data processing terminal includes a signal receiving module for receiving transmission signals from a data transmission platform, a local database for storing standard status data of a pressure plate, and a data analysis module for detecting and analyzing the status of the pressure plate. The signal receiving module includes a signal receiving chip for receiving transmission signals from a data transmission platform, a signal conversion unit for converting the received signal, and a data pre-processing unit for pre-processing the converted data.

2. A handheld pressure plate auxiliary detection device according to claim 1, characterized in that: The housing of the handheld device is designed according to ergonomics and waterproof. The data acquisition module, data display module and power supply module are all installed on the handheld device. The power supply module is a rechargeable battery and supplies power to the handheld terminal.

3. The handheld pressure plate auxiliary detection device according to claim 1, characterized in that: The image sensor is a high-definition camera, which collects the pressure plate image and the QR code ID image corresponding to the pressure plate through the camera driver. The data preprocessing unit denoises the collected image data and converts the denoised image analog signal into a digital signal through an analog-to-digital converter. The signal sending chip uses lossless compression technology to compress and package the converted digital signal and send it to the data transmission platform.

4. The handheld pressure plate auxiliary detection device according to claim 1, characterized in that: The wireless communication module includes a WiFi communication unit for providing WiFi communication connection, a Bluetooth communication unit for providing Bluetooth communication connection, and a cellular network communication unit for providing cellular network communication connection. The communication detection module includes a signal monitoring unit for monitoring the strength of WiFi signals, Bluetooth signals and cellular network signals in the substation area, and a signal switching unit for switching the communication transmission mode according to the signal strength monitoring results.

5. The handheld pressure plate auxiliary detection device according to claim 1, characterized in that: The signal conversion unit includes an amplifier for amplifying the signal received by the signal receiving chip, a filter for filtering the amplified signal, and a digital-to-analog converter for reconstructing the filtered digital model into image data. The data pre-processing unit uses the trained YoLo v5 algorithm to detect the position of the pressure plate and the QR code in the image data, and screens out the effective pressure plate area image and the QR code area image.

6. The handheld pressure plate auxiliary detection device according to claim 1, characterized in that: The local database stores standard image data of a press plate in an engaged state and standard image data of a press plate in an exited state. The press plate shown in the standard image data of a press plate in an engaged state is in an upright state, while the press plate shown in the standard image data of a press plate in an exited state is in an inclined state.

7. The handheld pressure plate auxiliary detection device according to claim 1, characterized in that: The data extraction unit extracts the pressure plate area image processed by the data pre-processing unit and the pressure plate standard state data in the local database, the data comparison unit compares and analyzes the extracted data and detects whether the pressure plate insertion and retraction state is abnormal, the discrimination feature in the analysis process is the direction angle of the pressure plate, and the discrimination basis is the width-to-length ratio of the circumscribed rectangle of the pressure plate, the analysis feedback unit identifies the ID of the QR code image, and binds and pairs the detected pressure plate insertion and retraction state abnormalities with the QR code IDs corresponding to each pressure plate and sends them to the data display module for display.

8. The handheld pressure plate auxiliary detection device according to claim 1, characterized in that: The data display module includes a data conversion unit for data conversion and a liquid crystal display screen for displaying the platen state detection result. The data conversion unit displays the platen state detection result sent by the analysis feedback unit on the liquid crystal display screen in the form of a visual chart.

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