High-degree-of-freedom pressure plate information acquisition module based on RS485 / CAN bus
Through the platen information acquisition module based on the RS485/CAN bus, the Hall sensor is used to detect the magnet magnetic line strength, which solves the versatility and scalability of the substation plate monitoring system, and realizes flexible data interaction and multi-node support.
Patent Information
- Application Number
- CN202422350398.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The existing substation voltage plate monitoring system has poor versatility, flexibility and scalability, and cannot adapt to the differences in protective screen cabinets in different substations.
The high-degree of freedom plate information acquisition module based on the RS485/CAN bus is adopted, including the main control circuit, sensor circuit, RS485/CAN bus communication circuit, power circuit, indicator circuit and bus interface. The 32-bit ARM architecture microcontroller and switch-type Hall sensor are used to detect the magnet magnetic line strength, and interact with the upper and lower modules or information terminals through the bus interface.
It achieves higher flexibility and versatility, can adapt to the differences in protective screen cabinets of different substations, has strong scalability, and supports multi-node data interaction.
Smart Images
Figure CN223077670U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of substation monitoring, and particularly relates to a high-degree-of-freedom pressure plate information acquisition module based on RS485 / CAN bus. Background Technique
[0002] In order to improve the operation and maintenance quality and efficiency of substation equipment and promote the professional digital transformation, the substation has carried out the construction of an intelligent inspection system, and various high- and low-voltage equipment in the station has begun to adopt technical means for auxiliary inspection, especially the substation hard pressure plate system. At present, there are various ways to realize the monitoring of the pressure plate, such as using reed switches, Hall sensors, acceleration sensors, infrared sensors, etc.
[0003] For the security of the substation equipment monitoring data, the data monitored by the sensors are currently reported in a wired manner, so the sensor acquisition module and the information terminal are connected by cables. The existing sensor acquisition modules are designed according to the number of rows and columns of the existing protection cabinets, and there are large differences in the pressure plate protection cabinets and types of different substations, so the versatility, flexibility and scalability are poor. Therefore, a high-degree-of-freedom pressure plate information acquisition module based on RS485 / CAN bus is proposed. Content of the Utility Model
[0004] The purpose of the utility model is to provide a high-degree-of-freedom pressure plate information acquisition module based on RS485 / CAN bus, aiming to solve the problems proposed in the above background technique.
[0005] The embodiment of the utility model is realized as follows: A high-degree-of-freedom pressure plate information acquisition module based on RS485 / CAN bus includes:
[0006] A main control circuit;
[0007] A sensor circuit, connected to the main control circuit, the sensor circuit is arranged under the monitored hard pressure plate, a magnet is assembled on the hard pressure plate, and the sensor circuit is used to detect the magnetic field line intensity of the magnet and output high and low level signals to the main control circuit according to the magnetic field line density;
[0008] An RS485 / CAN bus communication circuit, connected to the main control circuit, for reporting the pressure plate status information;
[0009] A power supply circuit, for power supply;
[0010] An indicator light circuit, connected to the main control circuit, for indicating the hard pressure plate status and the pressure plate information reporting status;
[0011] The bus interface is connected to the RS485 / CAN bus communication circuit, and the RS485 / CAN bus communication circuit conducts data interaction with the upper-level acquisition module, the lower-level acquisition module, or the information terminal through the bus interface.
[0012] Furthermore, the main control circuit uses a single-chip microcomputer with a 32-bit ARM architecture, and the model is FM33LC023N.
[0013] Furthermore, the sensor circuit includes a switch-type Hall sensor, and the model of the switch-type Hall sensor is CC7031ST; the magnet is axially magnetized, and the grade is N52; the magnet and the switch-type Hall sensor are on the same axis.
[0014] Furthermore, the RS485 / CAN bus communication circuit uses the RS485 bus communication method or the CAN bus communication method.
[0015] Furthermore, the power supply circuit uses a 3.3V power supply output by the information terminal to supply power to the press plate information acquisition module.
[0016] Furthermore, the indicator light circuit uses a red surface-mount LED, and the model is MHT192CRCT.
[0017] Furthermore, the bus interface includes bus interface 1 and bus interface 2. Bus interface 1 and bus interface 2 are respectively located at both ends of the press plate information acquisition module. Both bus interface 1 and bus interface 2 include the power supply lines (VCC, GND), ground wires, and bus communication lines of the press plate information acquisition module. The bus communication lines include 485A, 485B, or CAN+, CAN-.
[0018] Compared with the prior art, the beneficial effects of the present utility model are:
[0019] The high-degree-of-freedom press plate information acquisition module based on the RS485 / CAN bus has two bus communication interfaces, and both interfaces can conduct data interaction with external acquisition modules. At the same time, due to the adoption of bus technology, it can also directly conduct data interaction with information terminals using the bus. Compared with the prior art, the present utility model has higher flexibility and versatility. At the same time, due to the adoption of bus technology, the expandability is also relatively strong. Description of the Drawings
[0020] Figure 1 It is a structural schematic diagram of the high-degree-of-freedom press plate information acquisition module based on the RS485 / CAN bus.
[0021] Figure 2 It is a structural schematic diagram of the bus interface in the high-degree-of-freedom press plate information acquisition module based on the RS485 / CAN bus.
[0022] Figure 3 It is a schematic structural diagram of the installation of a Hall sensor and a magnet in a high-degree-of-freedom pressing plate information acquisition module based on the RS485 / CAN bus.
[0023] Figure 4 It is an application schematic diagram of a high-degree-of-freedom pressing plate information acquisition module based on the RS485 / CAN bus.
[0024] In the figure: 1 - main control circuit, 2 - sensor circuit, 3 - RS485 / CAN bus communication circuit, 4 - power supply circuit, 5 - indicator light circuit, A - bus interface 1, B - bus interface 2. Specific implementation manners
[0025] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0026] The following describes in detail the specific implementation of the present utility model in conjunction with specific embodiments.
[0027] As Figures 1-3 shown, a high-degree-of-freedom pressing plate information acquisition module based on the RS485 / CAN bus provided by an embodiment of the present utility model includes:
[0028] The main control circuit 1;
[0029] The sensor circuit 2, connected to the main control circuit 1. The sensor circuit 2 includes a switch-type Hall sensor, which is arranged below the monitored hard pressing plate. A magnet is assembled on the hard pressing plate. The magnet and the switch-type Hall sensor are located on the same axis, and are used to detect the intensity of the magnetic force line of the magnet on the hard pressing plate of the protection screen cabinet passing through the Hall sensor, so as to collect the state of the hard pressing plate.
[0030] The RS485 / CAN bus communication circuit 3, connected to the main control circuit 1, and is used to report the pressing plate state information;
[0031] The power supply circuit 4, used for power supply;
[0032] The indicator light circuit 5, connected to the main control circuit 1, and is used to indicate the state of the hard pressing plate and the state of reporting the pressing plate information;
[0033] The bus interface, connected to the RS485 / CAN bus communication circuit 3. The RS485 / CAN bus communication circuit 3 performs data interaction with the upper-level acquisition module, the lower-level acquisition module or the information terminal through the bus interface.
[0034] As Figure 1As shown, as a preferred embodiment of the present utility model, the main control circuit 1 adopts a 32-bit ARM architecture single-chip microcomputer, such as a FM33LC023N chip.
[0035] like Figure 3 As shown, as a preferred embodiment of the utility model, the switch type Hall sensor model is CC7031ST; the magnet is axially magnetized and the brand is N52; the magnet and the switch type Hall sensor are located on the same axis.
[0036] In the embodiment of the utility model, the sensor has the ability to detect the entire magnetic field. It can be activated as long as the north pole or south pole of the magnetic field is close. When the magnetic field is removed, the output is turned off. The detection principle of the Hall sensor mainly detects the magnetic lines of force radiated by the magnet in the environment. The Hall device sends corresponding high and low level signals to the main control circuit 1 according to the density of the magnetic lines of force.
[0037] like Figure 1 As shown, as a preferred embodiment of the utility model, the RS485 / CAN bus communication circuit 3 adopts RS485 bus communication mode or CAN bus communication mode.
[0038] like Figure 1 As shown, as a preferred embodiment of the utility model, the power supply circuit 4 uses a 3.3V power supply output by the information terminal to power the pressure plate information acquisition module.
[0039] like Figure 1 As shown, as a preferred embodiment of the utility model, the indicator light circuit 5 adopts a red SMD LED lamp, model MHT192CRCT.
[0040] In an embodiment of the utility model, when the state of the hard pressure plate of the protective screen cabinet changes, the indicator light will flash to indicate the state change. At the same time, the pressure plate information status is uploaded to the information terminal through the bus interface. After successful reporting, the indicator light will go out. If the reporting is unsuccessful, the indicator light will remain on.
[0041] like Figures 1-4 As shown, as a preferred embodiment of the utility model, the bus interface includes a bus interface 1A and a bus interface 2B, and the bus interface 1A and the bus interface 2B are respectively located at both ends of the pressure plate information acquisition module, and the bus interface 1A and the bus interface 2B both include the power line (VCC, GND), ground line and bus communication line of the pressure plate information acquisition module, and the bus communication line includes 485A, 485B or CAN+, CAN-.
[0042] In the embodiment of the present utility model, the bus interfaces 1A and 2B are the external bus interfaces of the RS485 / CAN communication module, and can communicate with the upper or lower level acquisition modules or information terminals or other devices with the same communication bus. The bus interfaces 1A and 2B include the positive and negative power supplies as the input or output of the power supply circuit 4. Figure 4 It is a schematic application diagram of the pressure plate information acquisition module. The pressure plate information acquisition module communicates with the pressure plate information acquisition module of another node through the bus interfaces 1A and 2B. The maximum number of pressure plate information acquisition module nodes that can be accessed simultaneously is 128. The 128 pressure plate status information is reported to the information terminal through the 485 / CAN bus method. The pressure plate information acquisition module can freely select the installation position according to the position of the pressure plate in the substation protection panel cabinet, without being restricted by the original position of the pressure plate in the protection panel cabinet. The pressure plate information acquisition modules are only connected by cables.
[0043] The above is only the preferred embodiment of the present utility model. It should be pointed out that for those skilled in the art, without departing from the concept of the present utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicability of the patent.
Claims
1. A high-degree-of-freedom platen information acquisition module based on RS485 / CAN bus, characterized in that, Including: Main control circuit; Sensor circuit, connected to the main control circuit, the sensor circuit is arranged under the monitored hard pressure plate, a magnet is assembled on the hard pressure plate, and the sensor circuit is used to detect the magnetic field line intensity of the magnet and output high and low level signals to the main control circuit according to the magnetic field line density; RS485 / CAN bus communication circuit, connected to the main control circuit, for reporting the status information of the pressure plate; Power supply circuit, for power supply; Indicator light circuit, connected to the main control circuit, for indicating the status of the hard pressure plate and the status of reporting the pressure plate information; Bus interface, connected to the RS485 / CAN bus communication circuit, and the RS485 / CAN bus communication circuit performs data interaction with the upper-level acquisition module, the lower-level acquisition module or the information terminal through the bus interface.
2. The high-degree-of-freedom platen information acquisition module based on RS485 / CAN bus according to claim 1, characterized in that The main control circuit uses a single-chip microcomputer with a 32-bit ARM architecture, and the model is FM33LC023N.
3. The high-degree-of-freedom platen information acquisition module based on RS485 / CAN bus according to claim 1, characterized in that The sensor circuit includes a switch-type Hall sensor, and the model of the switch-type Hall sensor is CC7031ST; the magnet is axially magnetized, and the grade is N52; the magnet and the switch-type Hall sensor are located on the same axis.
4. The high-degree-of-freedom platen information acquisition module based on the RS485 / CAN bus according to claim 1, wherein The RS485 / CAN bus communication circuit adopts RS485 bus communication mode or CAN bus communication mode.
5. The high-degree-of-freedom platen information acquisition module based on RS485 / CAN bus according to claim 1, wherein The power supply circuit uses a 1-way 3.3V power supply output by the information terminal to supply power to the pressure plate information acquisition module.
6. The high-degree-of-freedom platen information acquisition module based on RS485 / CAN bus according to claim 1, characterized in that The indicator light circuit uses a red surface-mount LED, and the model is MHT192CRCT.
7. The high-degree-of-freedom platen information acquisition module based on RS485 / CAN bus according to claim 1, characterized in that The bus interface includes bus interface 1 and bus interface 2. Bus interface 1 and bus interface 2 are respectively located at both ends of the pressure plate information acquisition module. Both bus interface 1 and bus interface 2 include the power supply line, ground line and bus communication line of the pressure plate information acquisition module. The bus communication line includes 485A, 485B or CAN+, CAN-.