Hard strap state monitoring system and method based on magnetic induction technology

Abstract

The invention relates to the technical field of electric power operation and maintenance, in particular to a hard pressing plate state monitoring system and method based on the magnetic induction technology, and the system comprises a plurality of pressing plate detectors, each pressing plate detector is internally provided with a plurality of magnetic induction sensors, and each magnetic induction sensor is correspondingly placed above each hard pressing plate; a plurality of pressing plate detection accessories, wherein each pressing plate detection accessory is installed on the movable connecting sheet of each hard pressing plate; each intelligent pressure plate controller is arranged on the side surface of each protection screen cabinet and is connected with the pressure plate detectors in the protection screen cabinets; the intelligent management host is respectively connected with the plurality of intelligent pressing plate controllers and the server in the safety I area; and the substation terminal host is arranged in the safe I area and is connected with the server in the safe I area. According to the invention, the efficiency of monitoring the hard strap of the protection device by operation and maintenance personnel is improved, the influence of human factors is avoided, and an alarm is given out when the state of the strap is abnormally shifted.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power operation and maintenance, and in particular to a hard pressing plate state monitoring system and method based on magnetic induction technology. Background Art

[0002] The hard pressure plate is designed to be an obvious disconnection point visible to the naked eye on the tripping circuit. It is convenient for operation and maintenance personnel to judge whether the tripping circuit of the relay protection device can connect the tripping coil of the switch (circuit breaker). In the current substation equipment, it is necessary to manually operate the hard pressure plate on the protection screen to manually control the activation and deactivation of the protection function, and this operation is frequently performed when performing equipment maintenance and other operations. With the increasing number of substation protection equipment and functions, the number of pressure plates that operation and maintenance personnel need to monitor has also increased. In summary, although the hard pressure plate provides great convenience for maintenance and operation, it also adds a disconnection point that cannot be completely closed in the protection system of the substation. Therefore, it is necessary to check the status of the hard pressure plate in daily operation and maintenance work.

[0003] At present, operation and maintenance personnel mainly rely on manual inspections or image recognition to check the status of the hard pressure plate. This method has low work efficiency and requires high quality of operation and maintenance personnel. It is easily affected by human factors, resulting in the failure to issue an alarm when the hard pressure plate is abnormally displaced, which in turn causes the scope of the accident to expand. Summary of the invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the problem that the prior art requires reliance on manual inspection or image recognition to check the status of the hard pressure plate, resulting in low work efficiency and high requirements on the quality of operation and maintenance personnel, which is easily affected by human factors, resulting in the inability to issue an alarm when the hard pressure plate is abnormally displaced, thereby causing the scope of the accident to expand.

[0005] In order to solve the above technical problems, the present invention provides a hard platen state monitoring system based on magnetic induction technology, comprising:

[0006] Multiple pressure plate detectors, each of which is installed above each horizontal row of multiple hard pressure plates in each protection screen cabinet; used to detect the status of each hard pressure plate, and send the status signal of each hard pressure plate to the intelligent pressure plate controller; wherein each pressure plate detector has multiple magnetic induction sensors built in, each magnetic induction sensor is correspondingly placed above each hard pressure plate and detects the status of the corresponding hard pressure plate;

[0007] A plurality of pressure plate detection accessories, each of which is mounted on a movable connecting piece of each hard pressure plate;

[0008] Multiple intelligent pressure plate controllers, each of which is placed on the side of each protection screen cabinet and connected to multiple pressure plate detectors in the protection screen cabinet through flat cables; used to collect and transmit status signals of each hard pressure plate, and to issue an audible and visual alarm and transmit an alarm signal when the hard pressure plate moves abnormally or is not put in place;

[0009] The intelligent management host is connected to multiple intelligent pressure plate controllers in communication, and is connected to the server in the safety zone I through a network cable; it is used to receive the status signals of each hard pressure plate collected by multiple intelligent pressure plate controllers, as well as the alarm signals transmitted by the intelligent pressure plate controllers when the hard pressure plate moves abnormally or is not put in place, and send the status signals of each hard pressure plate to the server in the safety zone I;

[0010] The substation terminal host is placed in safety zone I and connected to the server in safety zone I through a network cable; it is used for built-in intelligent pressure plate management software and receives the status signals of each hard pressure plate in the server in safety zone I.

[0011] Preferably, the pressure plate detection accessory is a continuous pressure plate accessory or a wire spring pressure plate accessory.

[0012] Preferably, the magnetic induction sensor adopts a Hall element.

[0013] Preferably, the magnetic induction sensor is based on the Hall effect principle. When the two poles of the magnet attached to the pressure plate are far apart, the magnetic induction sensor detects that the hard pressure plate is in the exit state; when the two poles of the magnet attached to the pressure plate are close, the magnetic induction sensor detects that the hard pressure plate is in the engagement state.

[0014] Preferably, the intelligent management host is communicatively connected with a plurality of intelligent pressure plate controllers via an RS485 communication line; and the intelligent pressure plate controller is connected with an AC / DC power supply via a cable.

[0015] Preferably, the intelligent platen management software includes: a platen real-time status detection module, a platen operation real-time prompt module, a platen operation error real-time alarm module, a platen status abnormal alarm module, an operation result verification module, and a report export module;

[0016] The press plate real-time status detection module is used to display the status of each hard press plate in real time in the form of a press plate image;

[0017] The press plate operation real-time prompt module is used to light up the red light of the press plate image corresponding to the wrongly operated hard press plate and send out an alarm prompt through the intelligent press plate controller when the hard press plate is misoperated;

[0018] The pressure plate operation error real-time alarm module is used to send out an audible and visual alarm through the intelligent pressure plate controller when the operator makes an operation error that causes the hard pressure plate to be abnormally displaced;

[0019] The pressure plate state abnormal alarm module is used to light up a yellow light flashing on the pressure plate image corresponding to the abnormally displaced hard pressure plate when no operation task is performed and the hard pressure plate is abnormally displaced;

[0020] The operation result checking module is used to record the status of all hard pressure plates in the current substation before each pressure plate operation; update the status of the hard pressure plates in real time during the operation, and if the status of the hard pressure plates has not reached the target state of the operation task, it will prompt that the task cannot be completed;

[0021] The report export module is used to record the historical data of the press plate operation and the press plate status in the press plate database, and to export the press plate operation report generated with year / quarter / month / day as the time unit.

[0022] Preferably, the intelligent pressure plate management software also includes: a 3D modeling module, which is used to build a protection screen cabinet simulation platform according to the on-site requirements of the substation, and draw each pressure plate image in the software according to the distribution and quantity of each hard pressure plate in each protection screen cabinet; when any hard pressure plate is put into or exited, the pressure plate image corresponding to the current hard pressure plate will display the pressure plate status in real time.

[0023] Preferably, the servers in the security zone I include a station-side acquisition server and an integrated system server.

[0024] Preferably, after receiving the status signals of each hard pressure plate in each protection screen cabinet, the station-side acquisition server in the safety zone I uses a protocol converter to send the status signals to the integrated automatic system server in the safety zone I; the protocol converter uses 104 protocol.

[0025] The present invention also provides a hard platen state monitoring method based on magnetic induction technology, which is applied to the hard platen state monitoring system based on magnetic induction technology described above, comprising:

[0026] Detect the status of each hard pressing plate in each corresponding protection screen cabinet through each magnetic induction sensor in each pressing plate detector, and convert each hard pressing plate status into a corresponding hard pressing plate status signal;

[0027] Through the intelligent pressure plate controller, the collected status signals of each hard pressure plate are uniformly transmitted to the intelligent management host through the RS485 communication line; through the network cable, the status signals of each hard pressure plate received by the intelligent management machine are sent to the server in the safety zone I, and then transmitted to the terminal host of the substation;

[0028] After analyzing and checking the status signals of each hard pressure plate through the intelligent pressure plate management software built into the substation terminal host, the real-time status of each hard pressure plate is displayed on the intelligent pressure plate management software, and the status information of each hard pressure plate is transmitted to the pressure plate database.

[0029] The above technical solution of the present invention has the following beneficial effects compared with the prior art:

[0030] The present invention discloses a hard pressure plate state monitoring system based on magnetic induction technology. Through the magnetic induction sensor placed above each hard pressure plate and the pressure plate detection attachment installed on the movable connecting piece of each hard pressure plate, based on the Hall effect principle, the state of each hard pressure plate is detected to realize real-time monitoring of the state of the hard pressure plate. After receiving the state signal of each hard pressure plate through the intelligent pressure plate controller, it is transmitted to the intelligent management host, then transmitted to the server in the safety zone I, and finally transmitted to the substation terminal host. Then, each hard pressure plate can be monitored by the intelligent pressure plate management software built into the substation terminal host. The pressure plate status signal is analyzed and checked, and the real-time status of each hard pressure plate is displayed on the intelligent pressure plate management software. At the same time, the status information of each hard pressure plate is transmitted to the database; the operation and maintenance personnel can view the real-time status information of each hard pressure plate on the intelligent pressure plate management software, realize real-time status monitoring of the pressure plate and real-time prompt of the pressure plate operation; thereby improving the efficiency of the operation and maintenance personnel in monitoring the hard pressure plates of the protection device and avoiding the influence of human factors. When the pressure plate status changes abnormally, the intelligent pressure plate controller will issue an audible and visual alarm and send an alarm message to the intelligent management host to avoid the expansion of the scope of the accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0032] Figure 1 It is a structural schematic diagram of a hard pressing plate state monitoring system based on magnetic induction technology provided by the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of each hardware used in the present invention; wherein, Figure 2 (a) in the figure represents a pressure plate detector; Figure 2 (b) in the figure indicates the continuous pressure plate detection attachment; Figure 2 (c) in the figure indicates a wire spring type pressure plate detection accessory; Figure 2 (d) in the figure represents the physical installation drawing of the joint pressure plate detection accessory; Figure 2 (e) in the figure represents the actual installation diagram of the wire spring type pressure plate detection accessory;

[0034] Figure 3 It is a flow chart of a hard pressing plate state monitoring method based on magnetic induction technology provided by the present invention;

[0035] Explanation of the markings in the specification: 1. Platen detector; 2. Platen detection accessory; 3. Platen controller; 4. Intelligent management host; 5. Intelligent platen management software. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0037] Reference Figure 1 As shown, Figure 1 This is a structural diagram of a hard platen state monitoring system based on magnetic induction technology provided by the present invention; specifically comprising:

[0038] Multiple pressure plate detectors, each pressure plate detector is installed above each horizontal row of multiple hard pressure plates in each protection screen cabinet; used to detect the status of each hard pressure plate, and send each hard pressure plate status signal to the intelligent pressure plate controller; wherein each pressure plate detector has multiple built-in magnetic induction sensors, each magnetic induction sensor is placed above each hard pressure plate and detects the corresponding hard pressure plate status; the magnetic induction sensor adopts Hall element; the magnetic induction sensor is based on the Hall effect principle, when the two poles of the magnet attached to the pressure plate are far away, the magnetic induction sensor detects the state of the hard pressure plate as the exit state; when the two poles of the magnet attached to the pressure plate are close, the magnetic induction sensor detects the state of the hard pressure plate as the engagement state; the structural schematic diagram of the pressure plate detector is as follows, Figure 2 As shown in (a);

[0039] Multiple pressure plate detection accessories, each pressure plate detection accessory is installed on the movable connecting piece of each hard pressure plate; the pressure plate detection accessory is a continuous pressure plate accessory or a wire spring pressure plate accessory; wherein the structural schematic diagram of the continuous pressure plate accessory and its physical installation diagram, such as Figure 2 As shown in (b) and (a) of FIG. 1 ; the structural diagram of the wire spring pressure plate accessory and its physical installation diagram, as shown in FIG. Figure 2 As shown in (c) and (e);

[0040] Multiple intelligent pressure plate controllers, each of which is placed on the side of each protection screen cabinet and connected to multiple pressure plate detectors in the protection screen cabinet through flat cables; used to collect and transmit status signals of each hard pressure plate, and to issue an audible and visual alarm and transmit an alarm signal when the hard pressure plate moves abnormally or is not put in place; wherein the intelligent pressure plate controller is connected to the AC / DC power supply through a cable;

[0041] The intelligent management host is connected to multiple intelligent pressure plate controllers and is connected to the server in the safety zone I through a network cable; it is used to receive the status signals of each hard pressure plate collected by multiple intelligent pressure plate controllers, as well as the alarm signals transmitted by the intelligent pressure plate controllers when the hard pressure plate acts abnormally or is not put into place, and send the status signals of each hard pressure plate to the server in the safety zone I; wherein, the intelligent management host is connected to multiple intelligent pressure plate controllers through RS485 communication lines; the intelligent management host can support multiple protocol conversions, which are used to communicate with the intelligent pressure plate management software and interact with third-party system data; the server in the safety zone I includes a station-end acquisition server and an integrated self-system server; after the station-end acquisition server in the safety zone I receives the status signals of each hard pressure plate in each protection screen cabinet, it uses a protocol converter to send them to the integrated self-system server in the safety zone I; the protocol converter uses 104 protocol;

[0042] The substation terminal host is placed in the safety zone I and connected to the server in the safety zone I through a network cable; it is used for the built-in intelligent pressure plate management software and receives the status signals of each hard pressure plate in the server in the safety zone I;

[0043] The intelligent platen management software includes: a platen real-time status detection module, a platen operation real-time prompt module, a platen operation error real-time alarm module, a platen status abnormal alarm module, an operation result verification module, and a report export module;

[0044] The platen real-time status detection module is used to display the status of each hard platen in real time in the form of a platen image; it can realize the real-time detection function of the platen status, and all platen working states can be detected in real time and displayed in real time in the intelligent platen management system software interface in a graphical manner, which is convenient for the operation duty personnel to view and manage;

[0045] The press plate operation real-time prompt module is used to, when a hard press plate is misoperated, the press plate image corresponding to the misoperated hard press plate will light up and flash red, and send out an alarm prompt through the intelligent press plate controller; the press plate operation real-time prompt function can be realized, and all press plate operations can be completed in a real-time online manner under the monitoring of the press plate host and the press plate controller, and the press plate detector will prompt the operation requirements in time. When a press plate is misoperated, the misoperated press plate will light up and flash red, and a sound alarm prompt can be sent out through the connected intelligent press plate controller;

[0046] The pressure plate operation error real-time alarm module is used to send out an audible and visual alarm through the intelligent pressure plate controller when the hard pressure plate is abnormally displaced due to an operator's operation error; the pressure plate operation error real-time alarm function can be realized. When the pressure plate is abnormally displaced due to an operator's operation error or other reasons, the intelligent pressure plate, the intelligent pressure plate controller and the intelligent pressure plate management system software will send out an audible and visual alarm in time, requiring the error state to be eliminated as soon as possible;

[0047] The abnormal state alarm module of the pressure plate is used to flash a yellow light on the pressure plate image corresponding to the abnormally displaced hard pressure plate when the operation task is not performed and the hard pressure plate is abnormally displaced. The abnormal state alarm function of the pressure plate can be realized. When the operation task is not performed, the pressure plate is misoperated due to external factors. The information of the abnormal displacement of the pressure plate is transmitted to the intelligent pressure plate management system software through the pressure plate controller and recorded in the database, and flashing prompts are given by different light colors.

[0048] The operation result verification module is used to record the status of all hard pressure plates in the current substation before each pressure plate operation; update the status of the hard pressure plate in real time during the operation, and if the status of the hard pressure plate has not reached the target state of the operation task, it will prompt that the task cannot be completed; the operation result verification function can be realized. Before each pressure plate operation, the intelligent pressure plate management system software automatically records the status of all pressure plates in the current station. The pressure plate status is updated in real time during the operation. If the pressure plate status has not reached the target state of the operation task, the system will give a prompt that the task cannot be completed;

[0049] The report export module is used to record the historical data of the platen operation and platen status in the platen database, and export the platen operation report generated with year / quarter / month / day as the time unit; the report function can be realized, and the historical process of the platen operation, platen status, etc. will be recorded in detail in the platen database. Users can view the historical operation records of the platen in the station at any time, and can view them in different ways such as year, quarter, month, day, etc., generate the required reports for the operation personnel and print them out, etc.;

[0050] The intelligent pressure plate management software also includes: a 3D modeling module, which is used to build a protection panel cabinet simulation platform according to the on-site requirements of the substation, and draw each pressure plate image in the software according to the distribution and quantity of each hard pressure plate in each protection panel cabinet; when any hard pressure plate is put into or exited, the pressure plate image corresponding to the current hard pressure plate will display the pressure plate status in real time.

[0051] In summary, for any protection screen cabinet, there are multiple hard pressure plates, and a pressure plate detector is placed above each horizontal row of multiple hard pressure plates. Multiple magnetic induction sensors are deployed on the pressure plate detector, and each magnetic induction sensor is placed above each hard pressure plate; a pressure plate detection accessory is attached to the movable connecting piece of each hard pressure plate; based on the pressure plate detectors on each hard pressure plate and the corresponding pressure plate detection accessory, the real-time status of the substation protection hard pressure plate is collected through the Hall element principle to monitor the pressure plate status. When the pressure plate is put into or out, the real-time status of the pressure plate can be displayed on the intelligent pressure plate management software, thereby improving the efficiency of operation and maintenance personnel in monitoring the outlet pressure plate of the protection device, avoiding the influence of human factors and issuing an alarm when the pressure plate status changes abnormally.

[0052] Reference Figure 3 As shown, Figure 3 A flowchart of a hard platen state monitoring method based on magnetic induction technology provided by the present invention; the hard platen state monitoring method based on magnetic induction technology is applied to the hard platen state monitoring system based on magnetic induction technology described above, specifically comprising:

[0053] S1: Detect the status of each hard pressing plate in each corresponding protection screen cabinet through each magnetic induction sensor in each pressing plate detector, and convert each hard pressing plate status into a corresponding hard pressing plate status signal;

[0054] S2: Through the intelligent pressure plate controller, the collected status signals of each hard pressure plate are uniformly transmitted to the intelligent management host through the RS485 communication line; through the network cable, the status signals of each hard pressure plate received by the intelligent management machine are sent to the server in the safety zone I, and then transmitted to the substation terminal host;

[0055] S3: After analyzing and checking the status signals of each hard pressure plate through the intelligent pressure plate management software built into the substation terminal host, the real-time status of each hard pressure plate is displayed on the intelligent pressure plate management software, and the status information of each hard pressure plate is transmitted to the pressure plate database.

[0056] After the platform is built according to the on-site requirements, the intelligent pressure plate management software draws the pressure plate graphics in the software according to the distribution and number of the pressure plates in the screen cabinet; the intelligent pressure plate controller receives the data uploaded by the intelligent pressure plate in real time, and when the pressure plate is put into or exited, the real-time status of the pressure plate is displayed on the intelligent pressure plate management software to realize remote monitoring; at the same time, the intelligent pressure plate management software can generate a pressure plate operation database to realize real-time status detection of pressure plate, real-time prompt of pressure plate operation, real-time alarm of pressure plate operation error, abnormal pressure plate status alarm, operation result verification, and report export advanced application functions; in addition, operation and maintenance personnel can use the intelligent pressure plate management software to view the real-time pressure plate status and operation, and realize the real-time status detection of pressure plate and real-time prompt of pressure plate operation.

[0057] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A hard platen status monitoring system based on magnetic induction technology, characterized in that: include: A plurality of pressure plate detectors, each of which is installed above each horizontal row of multiple hard pressure plates in each protection screen cabinet; Used to detect the status of each hard pressing plate, and send the status signal of each hard pressing plate to the intelligent pressing plate controller; wherein each pressing plate detector has multiple magnetic induction sensors built in, each magnetic induction sensor is placed above each hard pressing plate and detects the status of the corresponding hard pressing plate; A plurality of pressure plate detection accessories, each of which is mounted on a movable connecting piece of each hard pressure plate; Multiple intelligent pressure plate controllers, each of which is placed on the side of each protection screen cabinet and connected to multiple pressure plate detectors in the protection screen cabinet through flat cables; used to collect and transmit status signals of each hard pressure plate, and to issue an audible and visual alarm and transmit an alarm signal when the hard pressure plate moves abnormally or is not put in place; The intelligent management host is connected to multiple intelligent pressure plate controllers in communication, and is connected to the server in the safety zone I through a network cable; it is used to receive the status signals of each hard pressure plate collected by multiple intelligent pressure plate controllers, as well as the alarm signals transmitted by the intelligent pressure plate controllers when the hard pressure plate moves abnormally or is not put in place, and send the status signals of each hard pressure plate to the server in the safety zone I; The substation terminal host is placed in safety zone I and connected to the server in safety zone I through a network cable; it is used for built-in intelligent pressure plate management software and receives the status signals of each hard pressure plate in the server in safety zone I.

2. According to claim 1, a hard platen state monitoring system based on magnetic induction technology is characterized in that: The pressure plate detection accessory is a continuous pressure plate accessory or a wire spring pressure plate accessory.

3. The hard platen state monitoring system based on magnetic induction technology according to claim 1 is characterized in that: The magnetic induction sensor adopts a Hall element.

4. The hard platen state monitoring system based on magnetic induction technology according to claim 3 is characterized in that: The magnetic induction sensor is based on the Hall effect principle. When the two poles of the magnet attached to the pressure plate are far apart, the magnetic induction sensor detects that the hard pressure plate is in the exit state; when the two poles of the magnet attached to the pressure plate are close, the magnetic induction sensor detects that the hard pressure plate is in the engagement state.

5. The hard platen state monitoring system based on magnetic induction technology according to claim 1 is characterized in that: The intelligent management host is connected to multiple intelligent pressure plate controllers through RS485 communication lines; the intelligent pressure plate controller is connected to the AC / DC power supply through a cable.

6. The hard platen state monitoring system based on magnetic induction technology according to claim 1 is characterized in that: The intelligent platen management software includes: a platen real-time status detection module, a platen operation real-time prompt module, a platen operation error real-time alarm module, a platen status abnormality alarm module, an operation result verification module, and a report export module; The press plate real-time status detection module is used to display the status of each hard press plate in real time in the form of a press plate image; The press plate operation real-time prompt module is used to light up the red light of the press plate image corresponding to the wrongly operated hard press plate and send out an alarm prompt through the intelligent press plate controller when the hard press plate is misoperated; The pressure plate operation error real-time alarm module is used to send out an audible and visual alarm through the intelligent pressure plate controller when the operator makes an operation error that causes the hard pressure plate to be abnormally displaced; The pressure plate state abnormal alarm module is used to light up a yellow light flashing on the pressure plate image corresponding to the abnormally displaced hard pressure plate when no operation task is performed and the hard pressure plate is abnormally displaced; The operation result checking module is used to record the status of all hard pressure plates in the current substation before each pressure plate operation; update the status of the hard pressure plates in real time during the operation, and if the status of the hard pressure plates has not reached the target state of the operation task, it will prompt that the task cannot be completed; The report export module is used to record the historical data of the press plate operation and the press plate status in the press plate database, and to export the press plate operation report generated with year / quarter / month / day as the time unit.

7. The hard platen state monitoring system based on magnetic induction technology according to claim 1 is characterized in that: The intelligent pressure plate management software also includes: a 3D modeling module, which is used to build a protection panel cabinet simulation platform according to the on-site requirements of the substation, and draw each pressure plate image in the software according to the distribution and quantity of each hard pressure plate in each protection panel cabinet; when any hard pressure plate is put into or exited, the pressure plate image corresponding to the current hard pressure plate will display the pressure plate status in real time.

8. The hard platen state monitoring system based on magnetic induction technology according to claim 1 is characterized in that: The servers in the security zone I include station-side acquisition servers and integrated system servers.

9. The hard platen state monitoring system based on magnetic induction technology according to claim 8 is characterized in that: After receiving the status signals of each hard pressure plate in each protection screen cabinet, the station-side acquisition server in the safety zone I uses the protocol converter to send it to the integrated automatic system server in the safety zone I; the protocol converter uses the 104 protocol.

10. A method for monitoring the state of a hard pressing plate based on magnetic induction technology, characterized in that: A hard platen state monitoring system based on magnetic induction technology as described in any one of claims 1 to 9, comprising: Detect the status of each hard pressing plate in each corresponding protection screen cabinet through each magnetic induction sensor in each pressing plate detector, and convert each hard pressing plate status into a corresponding hard pressing plate status signal; Through the intelligent pressure plate controller, the collected status signals of each hard pressure plate are uniformly transmitted to the intelligent management host through the RS485 communication line; through the network cable, the status signals of each hard pressure plate received by the intelligent management machine are sent to the server in the safety zone I, and then transmitted to the terminal host of the substation; After analyzing and checking the status signals of each hard pressure plate through the intelligent pressure plate management software built into the substation terminal host, the real-time status of each hard pressure plate is displayed on the intelligent pressure plate management software, and the status information of each hard pressure plate is transmitted to the pressure plate database.

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