Intelligent pressing plate state detection device for transformer substation

Abstract

The utility model discloses a transformer station intelligent pressure plate state detection device, which relates to the transformer station pressure plate state monitoring technology field, and comprises a base plate used as a basic support part; the number of the pressing plates is multiple, and the pressing plates are installed on the bottom plate and have the two working states of being put into operation and quitting operation; the number of the magnetic steel accessories is multiple, each magnetic steel accessory is installed on the corresponding pressing plate, and when the states of the pressing plates are switched, the positions of the magnetic steel accessories are changed; the induction rail belt is installed on the bottom plate, a plurality of magnetic induction sensors are integrated on the induction rail belt in the length direction of the induction rail belt, and the magnetic induction sensors correspond to the magnetic steel accessories on the pressing plates in a one-to-one mode and are used for inducting the positions or magnetic field characteristic changes of the corresponding magnetic steel accessories so as to obtain working state information of the corresponding pressing plates; a plurality of magnetic induction sensors are integrated in the induction rail belt, and the sensors are efficiently connected in series, so that the whole body is convenient to install, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of substation pressure plate status monitoring technology, specifically a substation intelligent pressure plate status detection device. Background Technology

[0002] With the continuous expansion of power system scale and the improvement of intelligence level, the reliable operation of substation secondary equipment has become a key link in ensuring power grid security. As a core component controlling the activation and deactivation of relay protection and automation devices, the accurate monitoring of the status of the pressure plate directly affects the protection efficiency and fault response speed of the power system. If the pressure plate status is misjudged or missed, it may lead to serious consequences such as protection failure or maloperation, causing regional power outages and significantly impacting social production and residential electricity consumption.

[0003] Traditional substation pressure plate status monitoring mainly relies on manual inspections, requiring maintenance personnel to periodically check the pressure plate's opening and closing status visually or manually. This method is not only inefficient and labor-intensive but also significantly susceptible to human error, making it difficult to meet the real-time monitoring needs of the power grid. With technological advancements, some substations have introduced electronic monitoring methods, automating pressure plate status detection by adding independent monitoring units such as microswitches and photoelectric sensors to the pressure plate contacts. However, this technology has significant limitations: distributed magnetic induction sensors require separate signal acquisition and transmission lines for each pressure plate, resulting in high equipment installation costs and complex wiring; the lack of collaborative design between the magnetic induction sensors makes them prone to signal crosstalk in strong electromagnetic environments, leading to low data processing efficiency; furthermore, as the system scales up and the number of pressure plates increases, distributed magnetic induction sensors struggle to achieve unified management and rapid fault location, failing to meet the requirements of intelligent substation operation and maintenance for highly reliable and integrated monitoring systems.

[0004] In recent years, the power industry has urgently needed an innovative solution that can overcome the bottlenecks of traditional distributed monitoring technologies. Achieving efficient and accurate monitoring of pressure plate status through integrated and systematic magnetic induction sensor layout design has become a key technological direction for improving the automation level and operation and maintenance management capabilities of substations. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] A substation intelligent pressure plate status detection device includes:

[0007] The base plate serves as a foundation support component.

[0008] The pressure plate is provided in several parts, and each pressure plate is installed on the base plate, and has two working states: put into operation and take out of operation.

[0009] The magnetic steel accessory is provided in several parts, and each magnetic steel accessory is installed on a corresponding pressure plate. When the pressure plate state is switched, the position of the magnetic steel accessory changes.

[0010] The induction rail is mounted on the base plate and integrates several magnetic induction sensors along its length. Each magnetic induction sensor is set one-to-one with the magnetic steel accessory on each pressure plate to sense the position or magnetic field characteristics change of the corresponding magnetic steel accessory in order to obtain the working status information of the corresponding pressure plate.

[0011] As a further embodiment of this utility model: several of the pressure plates are arranged at intervals along the length direction of the base plate;

[0012] The induction track extends along the length of the base plate and is located on one side of each pressure plate;

[0013] Several of the aforementioned magnetic steel accessories are distributed at intervals along the length of the base plate along the corresponding pressure plate, and each magnetic steel accessory corresponds to the corresponding magnetic induction sensor in the induction rail in the horizontal direction.

[0014] As a further embodiment of this utility model: the induction track includes a strip-shaped housing, and a cavity extending along the length direction is formed inside the housing, and a plurality of magnetic induction sensors are spaced apart inside the housing along the length direction of the cavity.

[0015] As a further embodiment of this utility model, the induction track is installed on the base plate by means of snap-fit, bolt connection or adhesive.

[0016] As a further embodiment of this utility model: the pressure plate includes a fixed base and a movable connecting piece, the fixed base is installed on the base plate, the movable connecting piece is movably connected to the fixed base through a hinge shaft, and the magnetic steel accessory is fixedly connected to the free end of the movable connecting piece;

[0017] The magnetic steel accessory is equipped with a permanent magnet. When the pressure plate switches between the operation and non-operation states, the movable connecting piece rotates around the hinge axis, causing the permanent magnet in the magnetic steel accessory to make an arc-shaped movement, so that the distance between the permanent magnet and the corresponding magnetic induction sensor in the induction rail changes from close to far away.

[0018] As a further embodiment of this utility model: a positioning isolation component is provided between adjacent magnetic induction sensors in the induction track, the length of the positioning isolation component is equal to the distance between adjacent pressure plates, or the length of the positioning isolation component is in a fixed proportion to the distance between adjacent pressure plates.

[0019] As a further aspect of this utility model, it also includes a signal processing unit, which is used to receive and process signals acquired by the magnetic induction sensor in the induction track.

[0020] As a further embodiment of this utility model: several magnetic induction sensors are connected in series in sequence through a bus structure, the bus structure including a power supply line for providing working power to each magnetic induction sensor, and a signal transmission line for transmitting the induction signal of each magnetic induction sensor to the signal processing unit.

[0021] As a further embodiment of this utility model: the base plate is provided with a plurality of base plates, each base plate being provided with an induction rail and a corresponding signal processing unit, the induction rail being connected to the corresponding signal processing unit.

[0022] As a further embodiment of this utility model: several signal processing units are connected in series via communication lines and output signals to external monitoring equipment through the same output interface.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] 1) The induction track adopts a strip-shaped shell and closed cavity design, which integrates multiple magnetic induction sensors. It can effectively isolate external environmental interference such as dust, moisture, and mechanical collisions, while shielding external electromagnetic influences. Compared with the traditional decentralized monitoring method, it significantly improves the stability of sensor operation and the accuracy of monitoring data, providing a solid guarantee for reliable monitoring of the pressure plate status.

[0025] 2) Several magnetic induction sensors in the induction track are efficiently connected in series through a bus structure. The bus structure adopts a simplified wiring mode that integrates a single communication line and a power supply line, which greatly reduces the space occupied by the cables and significantly reduces the installation complexity and maintenance costs.

[0026] 3) Several signal processing units are connected in series through communication lines and share the same output interface to output signals to external monitoring equipment. Compared with the traditional distributed design where one pressure plate corresponds to one output interface, this method greatly reduces the number of interfaces. In large substations, it can realize real-time monitoring and centralized management of the status of a large number of pressure plates, reduce hardware costs, simplify line layout, and improve system reliability and maintenance efficiency.

[0027] 4) The positioning isolator is set between adjacent magnetic induction sensors. Its length is equal to or in a fixed proportion to the distance between adjacent pressure plates. On the one hand, it ensures that the position of each magnetic induction sensor is accurately aligned with the magnet attachment on the corresponding pressure plate, avoiding monitoring errors due to positional deviation. On the other hand, its insulation properties can effectively isolate electromagnetic crosstalk between adjacent magnetic induction sensors, reduce signal interference, ensure the stability of power supply and signal transmission lines, and further improve the accuracy and reliability of signal transmission.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure from one perspective of this utility model;

[0031] Figure 2 This is another perspective structural schematic diagram of this utility model;

[0032] Figure 3 yes Figure 2 Enlarged structural diagram at point A;

[0033] Figure 4 This is a partial structural diagram of the base plate, pressure plate, magnetic steel accessories, and induction rail belt of this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the induction track in this utility model.

[0035] The reference numerals and names in the figure are as follows:

[0036] 1. Base plate; 2. Pressure plate; 3. Magnet accessories; 4. Induction track; 5. Magnetic induction sensor; 6. Housing; 7. Base; 8. Movable connecting piece; 9. Permanent magnet; 10. Positioning isolation component; 11. Signal processing unit; 12. Power supply line; 13. Signal transmission line; 14. Communication line. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Please see Figure 1-5 In this embodiment of the utility model, a substation intelligent pressure plate 2 status detection device includes a base plate 1, a pressure plate 2, a magnetic steel accessory 3, an induction rail 4, and a signal processing unit 11.

[0039] The base plate 1, as the fundamental support component of the entire device, is made of insulating and metallic materials, or high-strength insulating materials, possessing excellent mechanical strength and electrical insulation performance, and providing a stable and reliable mounting carrier for other components. Its surface is equipped with standardized mounting positioning holes or grooves, enabling rapid and precise installation with components such as the pressure plate 2 and the induction rail 4. In practical applications, the size of the base plate 1 can be customized according to the actual layout and installation space of the substation pressure plates 2. For example, in small substations, a smaller base plate 1 can be used to save space; while in large substations, a larger base plate 1 can be selected to meet the installation needs of a large number of pressure plates 2. Several base plates 1 can be provided, each equipped with an induction rail 4 and a corresponding signal processing unit 11. The induction rail 4 is connected to the corresponding signal processing unit 11. The arrangement of multiple base plates 1 can adapt to the layout requirements of pressure plates 2 in substations of different sizes. For example, in ultra-large substations, multiple base plates 1 can achieve distributed monitoring of pressure plates 2 in different areas.

[0040] Several pressure plates 2 are spaced apart along the length of the base plate 1. Each pressure plate 2 has two working states: in operation and out of operation, corresponding to the functions of "closed conduction" and "disconnection isolation". The pressure plate 2 structure consists of a fixed base 7 and a movable connecting piece 8. The fixed base 7 is securely installed on the base plate 1 by bolts or clips, providing a supporting foundation for the movable connecting piece 8. The movable connecting piece 8 is movably connected to the fixed base 7 through a hinge shaft (rotating shaft). This hinge shaft is made of high-strength metal material to ensure that the movable connecting piece 8 can rotate flexibly and has sufficient connection strength to withstand frequent state switching.

[0041] When the pressure plate 2 switches from being out of operation to being in operation, the operator manually moves / drives the movable connecting piece 8 to rotate around the hinge axis. At this time, the magnet attachment 3, which is fixedly connected to the free end of the movable connecting piece 8, will also move. The permanent magnet 9 inside the magnet attachment 3 will make an arc-shaped movement and gradually approach the corresponding magnetic induction sensor 5 in the induction rail 4. When the movable connecting piece 8 rotates to close / lock with one end of the fixed base 7, the permanent magnet 9 will be close to the magnetic induction sensor 5. The magnetic induction sensor 5 will sense a strong magnetic field signal, which will provide a basis for determining the working state of the pressure plate 2, thereby connecting the secondary circuit and enabling the relay protection, automation device and other functions to take effect.

[0042] Conversely, when the pressure plate 2 switches from being in operation to being out of operation, the operator reverses the direction of the movable connecting piece 8 to rotate around the hinge axis. The magnet attachment 3, which is fixedly connected to the free end of the movable connecting piece 8, moves again. The permanent magnet 9 inside the magnet attachment 3 moves in an arc and begins to move away from the corresponding magnetic induction sensor 5 inside the induction rail 4. When the movable connecting piece 8 rotates to a certain angle, that is, when it opens to a certain angle, the movable connecting piece 8 continues to rotate to the corresponding position of the out-of-operation state. The permanent magnet 9 moves away from the magnetic induction sensor 5, and the magnetic field signal sensed by the magnetic induction sensor 5 is significantly weakened, or until it can no longer generate electromagnetic induction. This signal characteristic confirms that the pressure plate 2 is in the out-of-operation state.

[0043] The movable connecting piece 8 and the fixed base 7 are movably connected by a hinge shaft (rotating shaft). Specifically, one end of the fixed base 7 is connected to one end of the movable connecting piece 8 by a knob, and the other end of the fixed base 7 is engaged with the other end of the movable connecting piece 8 by a knob. The end of the movable connecting piece 8 that is engaged with the knob is the free end.

[0044] The induction track 4 is the core component of this device. It extends along the length of the base plate 1 and is installed on one side of each pressure plate 2. The induction track 4 adopts a strip-shaped housing 6 design, forming a closed cavity extending along the length direction inside. Several magnetic induction sensors 5 are spaced apart in the housing 6 along the length direction of the cavity. This design can not only effectively protect the magnetic induction sensors 5 from the influence of external environmental factors (such as dust, moisture, mechanical impact, etc.), but also reduce the influence of external electromagnetic interference on the magnetic induction sensors 5 and improve the accuracy of monitoring data.

[0045] Before leaving the factory, the induction rail 4 is assembled into a strip with multiple magnetic induction sensors 5 according to the standard configuration. For example, in a scenario with a standard configuration of nine pressure plates 2, nine magnetic induction sensors 5 will be precisely installed in the induction rail 4, and their positions will correspond one-to-one with the pressure plates 2. During on-site installation, the installer can directly fix the induction rail 4 to the base plate 1 by means of snap-fit, bolt connection or adhesive, without the need for complicated installation and debugging of the magnetic induction sensors 5, which greatly shortens the installation time and reduces the installation difficulty and labor costs. It can also ensure the firmness of the installation and facilitate the disassembly and maintenance later. For example, when using the snap-fit ​​method, the base plate 1 is provided with a slot that matches the housing 6 of the induction rail 4. During installation, the induction rail 4 can be inserted into the slot to complete the installation, which is simple and quick.

[0046] A positioning isolator 10 is provided between adjacent magnetic induction sensors 5. The length of the positioning isolator 10 is equal to the distance between adjacent pressure plates 2, or the length of the positioning isolator 10 is in a fixed proportion to the distance between adjacent pressure plates 2. The positioning isolator 10 is made of insulating material. On the one hand, it can ensure that each magnetic induction sensor 5 and the corresponding magnetic steel attachment 3 on the pressure plate 2 are accurately aligned in the horizontal direction. Even if it is affected by factors such as vibration during long-term use, it can ensure that the relative position of the magnetic induction sensor 5 and the magnetic steel attachment 3 remains unchanged, avoiding monitoring errors caused by positional deviation. On the other hand, the positioning isolator 10 can also isolate adjacent magnetic sensors to a certain extent. To reduce signal interference and improve the stability and reliability of the monitoring system, electromagnetic coupling between sensors 5 is minimized. Furthermore, the length of the positioning isolator 10 is equal to the distance between adjacent pressure plates 2, or the length of the positioning isolator 10 is proportional to the distance between adjacent pressure plates 2. This precise design ensures that each magnetic induction sensor 5 accurately corresponds to a pressure plate 2, preventing misalignment during monitoring. The positioning isolator 10 is replaceable, and different lengths of positioning isolators 10 can be replaced according to different distances between pressure plates 2. This modularity of the induction track assembly enhances the adaptability of the intelligent pressure plate 2 status detection device in this substation.

[0047] Several magnetic steel attachments 3 are provided, and each magnetic steel attachment 3 is installed on a corresponding pressure plate 2. When the pressure plate 2 switches states, the position of the magnetic steel attachment 3 changes. The magnetic steel attachment 3 contains a permanent magnet 9. As the movable connecting piece 8 of the pressure plate 2 rotates, the position of the permanent magnet 9 changes, thereby moving closer to or further away from the magnetic induction sensor 5 in the corresponding induction rail 4. The structural design of the magnetic steel attachment 3 ensures a stable connection between it and the movable connecting piece 8 of the pressure plate 2. It also takes into account the installation position and orientation of the permanent magnet 9, ensuring that the permanent magnet 9 can generate a significant magnetic field change signal during the state switching process of the pressure plate 2, so that the magnetic induction sensor 5 can detect it.

[0048] Furthermore, the magnet accessory 3 can be connected to the movable connecting piece 8 of the pressure plate 2 by means of sleeve or snap-fit, so that the setting of the magnet accessory 3 can use different structural forms of the pressure plate 2, making the intelligent pressure plate 2 status detection device of this substation more adaptable.

[0049] The signal processing unit 11 is used to receive and process the signals acquired by the magnetic induction sensors 5 in the induction track 4. Several magnetic induction sensors 5 are connected through a bus structure, which includes a power supply line 12 and a signal transmission line 13. The power supply line 12 adopts a voltage regulation design, which can provide a stable working power supply for each magnetic induction sensor 5, ensuring that the magnetic induction sensors 5 can operate normally in different working environments. The signal transmission line 13 adopts a shielded cable with good anti-interference performance, which can quickly and accurately transmit the induction signals of each magnetic induction sensor 5 to the signal processing unit 11.

[0050] By designing a bus structure that integrates a single communication line and a power supply line, several magnetic induction sensors 5 within the induction rail 4 are efficiently connected in series. This extremely simple wiring method not only significantly reduces the space occupied by cables but also significantly reduces installation complexity and maintenance costs. Of course, a ground wire is also connected within the induction rail 4 to provide electrical safety grounding, connecting potentially live parts such as the equipment casing to the earth to prevent electric shock to personnel and damage to equipment due to leakage.

[0051] Furthermore, the positioning isolator 10 between the magnetic induction sensors 5 can accurately fix the routing of the bus structure, preventing the wiring from twisting or tangling due to vibration or displacement, and ensuring the stability of the power supply line 12 and the signal transmission line 13. At the same time, the insulation characteristics of the positioning isolator 10 effectively isolate electromagnetic crosstalk between the magnetic induction sensors 5, prevent mutual interference during bus signal transmission, further improve the accuracy and reliability of signal transmission, and ensure the long-term stable operation of the bus structure.

[0052] When the state of the pressure plate 2 changes, the position of the magnetic steel accessory 3 changes, and the corresponding magnetic induction sensor 5 senses the change in the position or magnetic field characteristics of the magnetic steel accessory 3, generating a corresponding electrical signal. This electrical signal is transmitted to the signal processing unit 11 through the signal transmission line 13. The signal processing unit 11 has a built-in high-precision signal acquisition and analysis module, which can amplify, filter, and convert analog to digital signals. Through preset algorithms and threshold judgments, it can accurately obtain the working status information of the corresponding pressure plate 2.

[0053] Several signal processing units 11 are connected in series via communication lines 14 and share the same output interface to output signals to external monitoring equipment. Compared with the traditional distributed design where one pressure plate 2 corresponds to one output interface, this series architecture significantly reduces the number of interfaces. In large substations, even if there are hundreds of pressure plates 2, it is not necessary to equip them with the same number of output interfaces. Instead, data is transmitted in series through each signal processing unit 11, and finally, the status information of all pressure plates 2 is transmitted to external monitoring equipment through a single output interface. For example, multiple base plates 1 and corresponding induction rails 4 and signal processing units 11 can be set according to the distribution area of ​​the pressure plates 2. All parts work together to realize real-time monitoring and centralized management of the status of a large number of pressure plates 2. Maintenance personnel only need to view the working status of all pressure plates 2 in real time through this single output interface on the external monitoring equipment in the central monitoring room. Once an abnormality is detected, it can be dealt with in a timely manner. This not only reduces hardware costs but also simplifies the wiring layout, effectively improves the reliability and maintenance efficiency of the substation monitoring system, and ensures the safe and stable operation of the substation.

[0054] The signal processing unit 11 can be various devices or circuit modules with signal acquisition, analysis, processing and transmission functions, such as a microcontroller unit (MCU).

[0055] Furthermore, some signal processing units 11 can also use a strip-shaped housing 6, such as in the induction track, for wiring and to meet the needs of daily protection.

[0056] In summary, by integrating multiple magnetic induction sensors 5 into the induction track 4, the traditional decentralized monitoring model that requires separate wiring for each pressure plate 2 is changed. The bus structure is used to efficiently connect the sensors in the track, and the extremely simple wiring with a single communication line and power supply line is used to greatly reduce the installation cost and wiring complexity, solving the problems of high cost and complicated wiring of traditional technology equipment.

[0057] The sensing track 4 adopts a strip-shaped shell 6 with a closed cavity design, which integrates multiple sensors in an orderly manner and precisely corresponds to the pressure plate 2. Compared with the disadvantage of traditional distributed sensors lacking coordination, this integrated layout not only effectively protects the sensors from environmental interference, but also isolates electromagnetic crosstalk through the positioning isolation component 10, realizing efficient coordination between sensors and significantly improving the accuracy and stability of data acquisition and transmission.

[0058] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A substation intelligent pressure plate status detection device, characterized in that, include: The base plate serves as a foundation support component. The pressure plate is provided in several parts, and each pressure plate is installed on the base plate, and has two working states: put into operation and take out of operation. The magnetic steel accessory is provided in several parts, and each magnetic steel accessory is installed on a corresponding pressure plate. When the pressure plate state is switched, the position of the magnetic steel accessory changes. The induction rail is mounted on the base plate and integrates several magnetic induction sensors along its length. Each magnetic induction sensor is set one-to-one with the magnetic steel accessory on each pressure plate to sense the position or magnetic field characteristics change of the corresponding magnetic steel accessory in order to obtain the working status information of the corresponding pressure plate.

2. The intelligent pressure plate status detection device for substations according to claim 1, characterized in that, Several of the pressure plates are arranged at intervals along the length of the base plate; The induction track extends along the length of the base plate and is located on one side of each pressure plate; Several of the aforementioned magnetic steel accessories are distributed at intervals along the length of the base plate along the corresponding pressure plate, and each magnetic steel accessory corresponds to the corresponding magnetic induction sensor in the induction rail in the horizontal direction.

3. The intelligent pressure plate status detection device for substations according to claim 2, characterized in that, The induction track includes a strip-shaped housing with a cavity extending along its length inside. Several magnetic induction sensors are spaced apart inside the housing along the length of the cavity.

4. The intelligent pressure plate status detection device for substations according to claim 1, characterized in that, The induction track is installed on the base plate by means of snap-fit, bolt connection or adhesive.

5. The intelligent pressure plate status detection device for substations according to claim 1, characterized in that, The pressure plate includes a fixed base and a movable connecting piece. The fixed base is installed on the base plate, and the movable connecting piece is movably connected to the fixed base through a hinge shaft. The magnetic steel accessory is fixedly connected to the free end of the movable connecting piece. The magnetic steel accessory is equipped with a permanent magnet. When the pressure plate switches between the operation and non-operation states, the movable connecting piece rotates around the hinge axis, causing the permanent magnet in the magnetic steel accessory to make an arc-shaped movement, so that the distance between the permanent magnet and the corresponding magnetic induction sensor in the induction rail changes from close to far away.

6. The intelligent pressure plate status detection device for substations according to claim 3, characterized in that, A positioning isolator is provided between adjacent magnetic induction sensors within the induction track. The length of the positioning isolator is equal to the distance between adjacent pressure plates, or the length of the positioning isolator is in a fixed proportion to the distance between adjacent pressure plates.

7. A substation intelligent pressure plate status detection device according to any one of claims 1-6, characterized in that, It also includes a signal processing unit, which is used to receive and process signals acquired by the magnetic induction sensor in the induction track.

8. The intelligent pressure plate status detection device for substations according to claim 7, characterized in that, Several magnetic induction sensors are connected in series via a bus structure, which includes a power supply line for providing power to each magnetic induction sensor and a signal transmission line for transmitting the induction signals of each magnetic induction sensor to a signal processing unit.

9. The intelligent pressure plate status detection device for substations according to claim 7, characterized in that, The base plate is provided with several, and each base plate is provided with a sensing rail and a corresponding signal processing unit. The sensing rail is connected to the corresponding signal processing unit.

10. The intelligent pressure plate status detection device for substations according to claim 9, characterized in that, Several of the signal processing units are connected in series via communication lines and output signals to external monitoring equipment through the same output interface.

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