A non-contact height self-adaptive pressboard state acquisition device

Abstract

The utility model is suitable for the electric power secondary equipment hard pressure plate state monitoring technical field provides a kind of non-contact height self-adapting pressure plate state acquisition device, including hard pressure plate and acquisition unit, the acquisition unit includes the shell of being installed on hard pressure plate, the shell is in and is provided with PCB small board and microcontroller, and PCB small board is provided with multiple groups, and multiple groups PCB small board are connected through flexible FPC between, still be provided with magnetic switch chip and LED pilot lamp on the PCB small board, and magnetic switch chip is located in the side close to hard pressure plate, the utility model chooses magnetic switch chip, sensitivity is high, response speed is fast, and anti-interference ability is strong;Sensor is connected through flexible FPC between on structure, can be freely moved, adapts the hard pressure plate state acquisition of various interval in field, and adaptability is strong, and stability is high, and the state acquisition of the interval of heterogeneous hard pressure plate between substation secondary equipment can be efficiently solved.

Description

Technical Field

[0001] This utility model relates to the field of hard pressure plate status monitoring technology for power secondary equipment, specifically a non-contact height-adaptive pressure plate status acquisition device. Background Technology

[0002] In substation operation mode changes and equipment maintenance and troubleshooting, the operation of enabling and disabling rigid pressure plates is often involved. Due to the variety and dense layout of rigid pressure plates, erroneous or missed enabling / disabling can easily occur. If erroneous enabling / disabling occurs, it will directly affect the realization of relay protection functions. If the operating status of the rigid pressure plate is incorrect and not detected in time, it will cause the protection device to malfunction or fail to operate, resulting in a large-scale power outage. The existing technology of collecting and monitoring the status of rigid pressure plates using magnetic induction involves installing a data acquisition device on top of the rigid pressure plate. The data acquisition device has a built-in PCB board with magnetic induction sensors arranged at equal intervals. The selected sensors are reed switches and Hall effect sensors. A kit with a magnet is installed on the rigid pressure plate, and the sensor detects the magnetic field of the magnet to determine the enabling / disabling of the pressure plate.

[0003] The existing technology has the following main drawbacks: 1. In terms of sensor selection, reed switch type has a fragile mechanical structure, is susceptible to vibration and shock, and has a slow response speed. Hall sensor is sensitive to electromagnetic fields or electromagnetic interference and is prone to misjudgment of the monitoring status. 2. The sensors inside the data acquisition device are arranged at equal intervals, which can meet most on-site scenarios. However, for some pressure plates with various abnormal (non-standard) spacings, the data acquisition device cannot be universally used. It needs to be customized according to the actual spacing of the pressure plates on site, resulting in poor adaptability and timeliness. 3. Although some data acquisition devices use a guide rail-type sliding adjustment method to match the abnormal spacing pressure plate on site, long-term friction between the guide rail and the sliding module may cause wear on the guide rail surface, reduce the smoothness of sliding, or even cause jamming, affecting the adjustment accuracy or poor contact, resulting in poor reliability.

[0004] Therefore, in view of the above situation, there is an urgent need to provide a non-contact height-adaptive pressure plate status acquisition device to overcome the shortcomings in current practical applications. Utility Model Content

[0005] The purpose of this invention is to provide a non-contact height-adaptive pressure plate status acquisition device, which aims to solve the problems in the background art mentioned above.

[0006] This utility model is implemented as follows: a non-contact height-adaptive pressure plate status acquisition device includes a rigid pressure plate and an acquisition unit. The acquisition unit includes a housing mounted on the rigid pressure plate. A PCB board and a microcontroller are disposed inside the housing. Multiple sets of PCB boards are disposed and connected to each other by a flexible FPC. A magnetic switch chip and an LED indicator are also disposed on the PCB board, and the magnetic switch chip is located on the side close to the rigid pressure plate.

[0007] As a further embodiment of this utility model: the PCB board and the housing are in sliding fit, and the magnetic switch chip is adjusted as the PCB board moves left and right.

[0008] As a further embodiment of this utility model: the hard plate is provided with a mounting component, and the mounting component is provided with a magnet.

[0009] As a further embodiment of this utility model, a communication module is also provided inside the housing, and the communication module is electrically connected to the microcontroller.

[0010] As a further embodiment of this utility model, it also includes a data acquisition terminal and a PC-based monitoring system connected to the data acquisition terminal. The microcontroller, LED indicator, and communication module are all powered by the data acquisition terminal via a bus.

[0011] As a further embodiment of this utility model, the top cover of the shell adopts a semi-transparent structure.

[0012] As a further embodiment of this utility model, the housing is installed on the surface of the cabinet using 3M adhesive.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The sensor uses a magnetic switch chip for non-contact acquisition of the pressure plate status, with fast response speed, strong anti-interference ability, and high accuracy in hard pressure plate status detection.

[0014] 2. The sensor spacing is highly adjustable. The sensor moves freely along with the movable PCB board and can be accurately aligned with the magnet of the hard pressure plate below. The movable PCB boards are connected by a flexible FPC, and the spacing is flexibly adjustable to adapt to the status detection of various heterogeneous spacing hard pressure plates on site.

[0015] 3. High cutability: The flexible FPC soft connection can be cut. When the number of single-row monitoring pressure plates is small, the adjacent flexible FPCs of more than a number of PCB small boards can be cut, which is highly flexible.

[0016] 4. Expandable: The device can be cascaded and expanded to meet the needs of scenarios with a large number of single-row hard pressure plates.

[0017] 5. High reliability: Flexible FPC soft connection is used between PCB small boards. It is ultra-thin and flexible, with no loose joints, strong vibration resistance, moisture resistance and corrosion resistance, and high connection reliability, ensuring long-term stable operation. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a diagram of the monitoring system of this utility model.

[0021] In the attached diagram: 1-Magnetic switch chip, 2-LED indicator, 3-PCB board, 4-Flexible FPC, 5-Microcontroller, 6-Communication module, 7-Housing, 8-Magnet, 9-Mounting component, 10-Base, 11-Hard pressure plate, 12-Acquisition unit, 13-Cabinet, 14-Acquisition terminal, 15-PC monitoring. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figure 1 and Figure 2 This utility model provides a non-contact height-adaptive pressure plate status acquisition device, comprising: The rigid pressure plate 11 and the acquisition unit 12 are included. The acquisition unit 12 includes a housing 7 mounted on the rigid pressure plate 11. A PCB board 3 and a microcontroller 5 are disposed inside the housing 7. Multiple sets of PCB boards 3 are disposed and connected to each other by a flexible FPC 4. A magnetic switch chip 1 and an LED indicator 2 are also disposed on the PCB board 3. The magnetic switch chip 1 is located on the side closer to the rigid pressure plate 11. The flexible FPC 4 can be freely extended and retracted. When the magnetic switch chip 1 detects that a magnet mounted on the rigid pressure plate 11 is close, it outputs a signal to the microcontroller 5. The LED indicator 2 is used to provide light indication when the microcontroller 5 detects a change in the state of the rigid pressure plate 11, thus indicating the change in state.

[0027] The magnetic switch chip 1 is selected, which has high sensitivity, fast response speed and strong anti-interference ability.

[0028] In this embodiment, a magnetic switch chip 1 is used as a sensor to collect the status of the pressure plate in a non-contact manner. It has a fast response speed, strong anti-interference ability, and high accuracy in detecting the status of the hard pressure plate 11. The sensor spacing is highly adjustable. The sensor moves freely along with the movable PCB board 3 and can be accurately aligned with the magnet of the hard pressure plate 11 below. The movable PCB boards 3 are connected by a flexible FPC 4, and the spacing is flexibly adjustable to adapt to the status detection of hard pressure plates 11 with various heterogeneous spacings on site. It has high cutability. The flexible FPC4 soft connection can be cut. When the number of single-row monitoring pressure plates is small, more than 3 PCB small boards adjacent to the flexible FPC4 can be cut, which is highly flexible. This device can be cascaded and expanded to meet the needs of scenarios with a large number of single-row hard pressure plates 11. The three PCB boards are connected by a flexible FPC4 soft connection, which is ultra-thin and flexible, with no loose joints, strong vibration resistance, moisture resistance and corrosion resistance, and high connection reliability, ensuring long-term stable operation.

[0029] In a specific example, the PCB board 3 and the housing 7 are in sliding fit, and the magnetic switch chip 1 can be adjusted by moving the PCB board 3 left and right.

[0030] In a specific example, the rigid pressure plate 11 is provided with a mounting component 9, and the mounting component 9 is provided with a magnet 8. According to the actual spacing of the rigid pressure plate, the PCB board 3 is moved so that the magnetic switch chip 1 is aligned with the magnet 8, ensuring that the rigid pressure plate 11 can sense the magnet 8 when it is closed.

[0031] In a specific example, a communication module 6 is also provided inside the housing 7, and the communication module 6 is electrically connected to the microcontroller 5; It also includes a data acquisition terminal 14 and a PC monitoring terminal 15 connected to the data acquisition terminal 14. The microcontroller 5, LED indicator 2 and communication module 6 are all powered by the data acquisition terminal 14 via a bus. The data acquisition terminal 14 also provides 485 communication. The communication module 6 is used to send the pressure plate status collected by the microcontroller 5 to the acquisition terminal 14 via the 485 bus, and then the acquisition terminal 14 uploads it to the PC monitoring 15.

[0032] In a specific example, the top cover of the housing 7 has a semi-transparent structure, which allows the light emitted by the LED indicator 2 to pass through evenly.

[0033] In a specific example, the housing 7 is installed on the surface of the cabinet 13 above the rigid pressure plate 11 using 3M adhesive. The rigid pressure plate 11 can be inserted or removed based on the base 10.

[0034] In summary, the working steps of this utility model are as follows: When personnel operate the hard pressure plate 11 to close / open, the magnetic switch chip 1 can sense the magnet 8 approaching or moving away and send a signal to the microcontroller 5. The microcontroller 5 then turns on or off the LED indicator 2. At the same time, the collected status is sent to the acquisition terminal 14 through the communication module 6, and then sent to the PC monitoring terminal 15. The PC monitoring terminal 15 monitors the status of the hard pressure plate in real time and displays or alarms. Maintenance personnel can view the operating status of the hard pressure plate in the background.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A non-contact height-adaptive pressure plate status acquisition device, comprising a rigid pressure plate (11) and an acquisition unit (12), characterized in that, The acquisition unit (12) includes a housing (7) mounted on a rigid plate (11). A PCB board (3) and a microcontroller (5) are provided inside the housing (7). There are multiple sets of PCB boards (3), which are connected to each other by a flexible FPC (4). A magnetic switch chip (1) and an LED indicator (2) are also provided on the PCB board (3), and the magnetic switch chip (1) is located on the side close to the rigid plate (11).

2. The non-contact height-adaptive pressure plate status acquisition device according to claim 1, characterized in that, The PCB board (3) and the housing (7) slide together, and the magnetic switch chip (1) moves left and right with the PCB board (3) to adjust.

3. The non-contact height-adaptive pressure plate status acquisition device according to claim 1, characterized in that, The hard plate (11) is provided with a mounting component (9), and the mounting component (9) is provided with a magnet (8).

4. The non-contact height-adaptive pressure plate status acquisition device according to claim 1, characterized in that, The housing (7) is also provided with a communication module (6), which is electrically connected to the microcontroller (5).

5. The non-contact height-adaptive pressure plate status acquisition device according to claim 4, characterized in that, It also includes a data acquisition terminal (14) and a PC-side monitoring (15) connected to the data acquisition terminal (14). The microcontroller (5), LED indicator (2) and communication module (6) are all powered by the data acquisition terminal (14).

6. The non-contact height-adaptive pressure plate status acquisition device according to claim 1, characterized in that, The top cover of the housing (7) has a semi-transparent structure.

7. The non-contact height-adaptive pressure plate status acquisition device according to claim 1, characterized in that, The housing (7) is installed on the surface of the cabinet (13) using 3M adhesive.

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