CN212873249U

CN212873249U - On-load switch controller based on CAN bus

Info

Publication number: CN212873249U
Application number: CN202021703581.2U
Authority: CN
Inventors: 刘勇
Original assignee: Tianjin Tianbian Henbol Electrical Advance Co ltd
Current assignee: Tianjin Tianbian Henbol Electrical Advance Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-04-02
Anticipated expiration: 2030-08-14

Abstract

The utility model relates to the technical field of electronic and electrical uses, and discloses a CAN bus-based on-load switch controller, which comprises a CAN communication module, wherein the CAN communication module is used for transmitting data for communication, the CAN communication module is connected with a singlechip module, the singlechip module is connected with an internal power module, a gear shifting relay module and a gear reading module, and the gear reading module is used for reading and setting gears of a load switch; the single chip microcomputer module utilizes the CAN communication module to realize remote gear reading and gear shifting, the internal power supply module is connected with the CAN communication module and used for supplying power to the CAN communication module and the single chip microcomputer module, the internal power supply module is connected with the external power supply module, the external power supply module is connected with the gear shifting relay module, and the gear shifting relay module is used for controlling gear shifting of the on-load switch; the utility model provides a singlechip CAN realize long-range reading shelves and functions such as gear shifting through CAN communication.

Description

On-load switch controller based on CAN bus

Technical Field

The utility model relates to an electric power system technical field, concretely relates to have switch controller of carrying based on CAN bus.

Background

At present, on-load switches applied to many power industries only support manual gear shifting and field observation gear reading, and old versions of on-load switch controllers adopt direct reading or gear line operation for remote control, so that the problems of too many gear lines, too long gear lines and the like occur, the management and the maintenance are not convenient, and a communication interface cannot be matched with a CAN bus for control and data transmission.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model aims to provide a have a load switch controller based on the CAN bus.

In order to achieve the above object, the present invention provides the following technical solutions:

the on-load switch controller based on the CAN bus comprises a CAN communication module, wherein the CAN communication module is used for transmitting data for communication, the CAN communication module is connected with a single chip microcomputer module, the single chip microcomputer module is connected with an internal power supply module, a gear shifting relay module and a gear reading module, and the gear reading module is used for reading and setting gears of an on-load switch; the single chip microcomputer module utilizes CAN communication module realizes long-range reading shelves and gear shifting, internal power module with CAN communication module connects, internal power module is used for doing CAN communication module with the single chip microcomputer module power supply, internal power module is connected with external power module, external power module connects gear shifting relay module, external power module changes the alternating current to the direct current does internal power module with gear shifting relay module power supply, gear shifting relay module is used for controlling the gear shifting that has the load switch.

Preferably, the main control chip of the CAN communication module is a chip U5, pin 6 of the chip U5 is connected to the single chip microcomputer module through a port CAN _ L, pin 7 of the chip U5 is connected to the single chip microcomputer module through a port CAN _ H, pin 3 of the chip U5 is connected to the internal power supply module, the chip U5 is connected to a chip U4, pin 3 of the chip U4 is connected to the single chip microcomputer module through a port CAN _ TX, and pin 2 of the chip U4 is connected to the single chip microcomputer module through a port CAN _ RX.

Preferably, the main control chip of the shift relay module is a chip RLY1 and a chip RLY2, pin 4 of the chip RLY1 is grounded through a transistor Q2, pin 1 of the chip RLY1 is connected with the external power supply module, pin 1 of the chip RLY2 is connected with the external power supply module, pin 4 of the chip RLY2 is grounded through a transistor Q3, the transistor Q2 is connected with a port UP through a chip U6, the transistor Q3 is connected with a port DOWN through a chip U7, and the shift relay module is connected with the single chip microcomputer module through the port UP and the port DOWN.

Preferably, the main control chip of the single chip microcomputer module is a chip U2A and a chip U2B, a pin 1 of the chip U2B is connected to the internal power supply module, a pin 50 of the chip U2A is connected to a port UP, a pin 51 of the chip U2A is connected to a port DOWN, a pin 8 of the chip U2A is connected to a port WN, a pin 44 of the chip U2A is connected to a port CAN _ RX, and a pin 45 of the chip U2A is connected to a port CAN _ TX.

Preferably, the gear reading module comprises a chip P2, a chip P6 and a chip P5, pins 5 to 20 of the chip P2 are correspondingly connected to ports N2 to N17 of the single chip microcomputer module, pin 1 of the chip P2 is connected to a port WN of the single chip microcomputer module, pin 3 of the chip P2 is connected to the port N1 of the single chip microcomputer module, and pins 1 to 8 of the chip P6 are correspondingly connected to ports N18 to N25 of the single chip microcomputer module.

Preferably, the main control chip of the internal power module is a UP1 chip, the input port of the UP1 chip is connected to a 24V power supply, and the output port of the UP1 chip is connected to a 5V power supply port through a connecting inductor L1.

Preferably, the 5V power port is connected with a chip VR1, the output port of the chip VR1 is connected with a 3V3 power port, and the 3V3 power port is connected with the power input port of the chip U2B.

Preferably, the 5V power port is connected to a chip U1 through a resistor R5 and an inductor L3, and an output port of the chip U1 is connected to a D5V port through a capacitor C14.

Preferably, the pin 7 of the single chip microcomputer module is connected with a button S1 through a RESET port, one end of the button S1 is connected with a 3V3 power supply port through a resistor R7, and the other end of the button S1 is grounded through a capacitor C23.

Preferably, the external power supply module adopts a bright weft switch power supply HDR-30-24.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) through setting up the CAN communication module, the CAN communication module is used for transmitting data and communicates, the CAN communication module is connected with single chip module, the high-speed CAN transceiver of TJA1051T passes through ADUM120IBR and keeps apart the chip and connect singlechip STM32F103RBT6, ADUM120IBR keeps apart the chip and has realized the electrical isolation between the CAN bus node, improve the transmission of CAN bus signal, the high-speed CAN transceiver of TJA1051T provides differential transmission and receiving function for singlechip STM32F103RBT6 of single chip module.

(2) The single chip microcomputer module is connected with an internal power supply module, a gear shifting relay module and a gear reading module, the gear reading module is used for reading and setting gears of the on-load switch, the single chip microcomputer module utilizes a CAN communication module to realize remote gear reading and gear shifting, specific gear positions of 25 gears of the on-load switch are read through ports N1-N25 of the gear reading module, the highest gear position CAN be set according to the specific gear positions of the on-load switch, the gear shifting relay module is used for controlling gear shifting of the on-load switch, and the single chip microcomputer STM32F103RBT6 controls a relay SRD-24VDC-SL-C to control gear shifting of the on-load switch through contact attraction and disconnection.

(3) Internal power module is connected with CAN communication module, internal power module is used for supplying power for CAN communication module and singlechip module, internal power module is connected with external power module, external power module connects the relay module of shifting gears, external power module changes the alternating current to the direct current and is internal power module and the power supply of the relay module of shifting gears, internal power module converts 24V voltage into 5V voltage, the partly 5V voltage of output is used for CAN communication module power supply, the partly 3.3V's of output power of export behind forward low voltage regulator, 3.3V's power is the singlechip module power supply, 5V power is through keeping apart constant voltage power supply chip and turning into alternating voltage D5V, alternating voltage D5V provides the power for CAN communication module.

The utility model provides a singlechip CAN realize long-range functions such as reading shelves and gear shifting through CAN communication.

Drawings

Fig. 1 is a block diagram of a load switch controller based on a CAN bus.

Fig. 2 is a circuit diagram of a CAN communication module.

Fig. 3 is a circuit diagram of the shift relay module.

Fig. 4 is a circuit diagram of the single chip microcomputer module and the gear reading module.

Fig. 5(a) is a circuit diagram of the chip UP1 of the internal power supply module.

Fig. 5(b) is a circuit diagram of the chip VR1 of the internal power supply module.

Fig. 5(c) is a circuit diagram of the chip U1 of the internal power supply module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1 to 5(c) simultaneously, a preferred embodiment of the present invention provides an on-load switch controller based on a CAN bus, which includes a CAN communication module, the CAN communication module is used for transmitting data for communication, the CAN communication module is connected with a single chip module, the single chip module is connected with an internal power module, a gear shifting relay module and a gear reading module, the gear reading module is used for reading and setting a gear of the on-load switch; the single chip microcomputer module utilizes the CAN communication module to realize remote gear reading and gear shifting, the internal power supply module is connected with the CAN communication module, the internal power supply module is used for supplying power for the CAN communication module and the single chip microcomputer module, the internal power supply module is connected with the external power supply module, the external power supply module is connected with the gear shifting relay module, the external power supply module converts alternating current to direct current to supply power for the internal power supply module and the gear shifting relay module, and the gear shifting relay module is used for controlling gear shifting of a load switch.

The main control chip of the CAN communication module is a chip U5, the model of the chip U5 is TJA1051T high-speed CAN transceiver, an interface between a Controller Area Network (CAN) protocol controller and a physical two-wire CAN bus is provided, a pin 6 of the chip U5 is connected with a singlechip module through a port CAN _ L, a pin 7 of the chip U5 is connected with the singlechip module through a port CAN _ H, the TJA1051T high-speed CAN transceiver provides differential transmission and receiving functions for a singlechip of the singlechip module, a pin 3 of the chip U5 is connected with an internal power supply module, a VCC power supply interface of the CAN communication module is connected with D5V, the internal power supply module provides 5V voltage for the chip U5, the chip U5 is connected with the singlechip through a chip U4, the model of the chip U4 is an ADUM120IBR isolation chip, electric isolation between CAN bus nodes is realized, transmission of bus signals is improved, the pin 3 of the chip U4 is connected with the singlechip module through a port TX, a pin 2 of a chip U4 is connected with a single chip microcomputer module through a port CAN _ RX, a pin 1 of a chip U4 is connected with a 3V3 power interface and used for providing a 3V power supply for a chip U4, a pin 8 of the chip U4 is connected with a D5V power interface and used for providing a 5V power supply for a chip U4, low-voltage power supply is achieved, system power consumption is reduced, a capacitor C28 is connected between the 3V3 power port and a reference ground GND, a capacitor C29 and a capacitor C30 are connected between the D5V power port and the reference ground DGND and used for eliminating high-frequency interference and achieving a better filtering effect, the pin 1 and the pin 8 of the chip U4 need to be powered on simultaneously, and an ADUM120IBR isolation chip CAN normally work.

The main control chip of the gear shifting relay module is a chip RLY1 and a chip RLY2, the model of the chip RLY1 and the model of the chip RLY2 are relays SRD-24VDC-SL-C, pin 4 of the chip RLY1 is grounded through a triode Q2, pin 1 of the chip RLY1 is connected with an external power module, pin 1 of the chip RLY1 is connected with a 24V power port, pin 1 of the chip RLY2 is connected with the external power module, pin 1 of the chip RLY2 is connected with the 24V power port, the external power module provides 24V power for chip RLY1 and chip RLY2, the 24V power is used for driving relays SRD-24VDC-SL-C, pin 4 of the chip RLY2 is grounded through a triode Q3, a triode Q2 is connected with a port through a chip U6, the triode Q3 is connected with a port through a chip U7, the gear shifting relay module is connected with a singlechip module through the port and the STM 103 in the singlechip module through an SRD-24VDC contact, and the SRD-SL- The pull-in and the pull-off control the gear shifting of the on-load switch.

The main control chip of the single chip microcomputer module is a chip U2A and a chip U2B, the models of the chip U2A and the chip U2B are a single chip microcomputer STM32F103RBT6, a pin 1 of the chip U2B is connected with an internal power supply module, a pin 1 of the chip U2B is connected with a 3V3 power supply port, the internal power supply module provides 3V power for the single chip microcomputer STM32F103RBT6, a pin 50 of the chip U2A is connected with a port UP, a pin 51 of the chip U2A is connected with a port DOWN, the single chip microcomputer STM32F103RBT6 is connected with a relay SRD-24VDC-SL-C in a gear shifting relay module through the port UP and the port DOWN, the single chip microcomputer STM32F103RBT6 controls the contact of the relay SRD-24VDC to be switched on and off, a pin 8 of the chip IBU 2A is connected with a pin WN, a pin 44 of the chip U2A is connected with a port _ RX, a CAN pin of the chip U2A is connected with a CAN pin 120 and a pin of the relay SRF _ TX 39, and the communication signals of the single chip microcomputer STM32F103RBT6 are electrically isolated.

The gear reading module comprises a chip P2, a chip P6 and a chip P5, pins 5-20 of the chip P2 are correspondingly connected with ports N2-N17 of the single chip microcomputer module, pin 1 of the chip P2 is connected with a port WN of the single chip microcomputer module, pin 3 of the chip P2 is connected with a port N1 of the single chip microcomputer module, pins 1-8 of the chip P6 are correspondingly connected with ports N18-N25 of the single chip microcomputer module, the single chip microcomputer module reads specific gear numbers of 25 gears of the load switch through 25 ports in total of the ports N1-N25, and the single chip microcomputer module can also set the highest gear.

The main control chip of the internal power supply module is a chip UP1, the model of the chip UP1 is LM2596SX-5.0NOPB switching voltage regulator, the input port of the chip UP1 is connected with a 24V power supply, the output port of the chip UP1 is connected with a 5V power supply port through a connecting inductor L1, the LM2596SX-5.0NOPB switching voltage regulator carries out 5V voltage conversion on the input 24V voltage, part of the output 5V voltage is used for supplying power to a CAN communication module, part of the output 5V voltage is converted into 3.3V voltage to supply power to a single chip microcomputer surge module, a pin 1 of the chip UP1 is connected with an inductor L2 through a capacitor C1, a diode D1 and a capacitor C4, a pin 5 of the chip UP1 is connected with an inductor L2, the capacitor C1, a diode D1, a capacitor C4 and the inductor L2 form a power supply input end circuit, and the power supply input end circuit CAN realize the suppression of common.

The 5V power supply port is connected with a chip VR1, the chip VR1 is an AMS1117-3.3 forward low-voltage regulator, the input port of the chip VR1 is connected with a 5V power supply, the output port of the chip VR1 is connected with a 3V3 power supply port, the 3V3 power supply port is connected with the power supply input port of the chip U2B, the 5V power supply outputs a 3.3V power supply after passing through the AMS1117-3.3 forward low-voltage regulator, and the 3.3V power supply supplies power for the single chip microcomputer module.

The 5V power supply port is connected with a chip U1 through a resistor R5 and an inductor L3, an output port of the chip U1 is connected with a D5V port through a capacitor C14, the model of the chip U1 is IB0505LS-1W isolation voltage-stabilized power supply chip, a 5V power supply is converted into alternating-current voltage D5V through the IB0505LS-1W isolation voltage-stabilized power supply chip, a pin 1 and a pin 2 of the IB0505LS-1W isolation voltage-stabilized power supply chip are connected with the capacitor C13, the inductor 3, the capacitor C12 and the resistor R5, the influence of common-mode interference brought by other equipment on a system can be effectively isolated, and the load can work stably.

The 7 pins of the singlechip module are connected with a button S1 through a RESET port, one end of the button S1 is connected with a 3V3 power supply port through a resistor R7, the other end of the button S1 is grounded through a capacitor C23, the capacitor C23 ensures that a RESET signal entering the singlechip is not too noisy, and the button S1 is opened and closed to control the RESET of the singlechip.

The external power supply module adopts a bright and weft switch power supply HDR-30-24, 220V direct current is converted into 24V alternating current, one part of the 24V alternating current is used for driving a relay SRD-24VDC-SL-C, and one part of the 24V alternating current is converted into 5V voltage through an LM2596SX-5.0NOPB switch voltage regulator.

In the present embodiment, it is preferred that,

the working principle is as follows: the single chip microcomputer is RESET when being started, so that a CPU and all parts of a system are in a determined initial state and start to work from the initial state, when a button S1 is manually pressed, the level of 3.3V is directly applied to a RESET port of a single chip microcomputer STM32F103RBT6, the single chip microcomputer STM32F103RBT6 is RESET, after the RESET is completed, the single chip microcomputer STM32F103RBT6 starts to work, an external power supply module adopts an open-weft switch power supply HDR-30-24, 220V direct current is converted into 24V alternating current, one part of the 24V alternating current is used for driving a relay SRD-24VDC-SL-C, one part of the 24V alternating current passes through an internal power supply module, the internal power supply module converts 24V voltage into 5V voltage through an LM2596SX-5.0NOPB switch voltage regulator, one part of the output 5V voltage is used for supplying power to a communication module, one part of the output 5V AMS voltage passes through an LM 1117-3.3 forward low-voltage regulator and then outputs a CAN, A3.3V power supply supplies power for a singlechip module, a 5V power supply is converted into an alternating voltage D5V through an IB0505LS-1W isolation voltage-stabilizing power supply chip, the alternating voltage D5V supplies power for a TJA1051T high-speed CAN transceiver and an ADUM120IBR isolation chip of a CAN communication module, after 24V alternating current is electrified on a relay SRD-24VDC-SL-C, the singlechip STM32F103RBT6 controls the relay SRD-24VDC-SL-C to control the gear shifting of a load switch through contact attraction and disconnection, the JAT 1051T high-speed CAN transceiver is connected with an STM32F103RBT6 through the ADUM120IBR isolation chip, the ADUM120IBR isolation chip realizes the electrical isolation between CAN bus nodes and improves the transmission of CAN bus signals, the TJA1051T high-speed CAN transceiver provides a differential singlechip sending and receiving functions for the STM32F103RBT6 of the STM module, the relay SRD-24-VDC isolation chip CAN carry out the load switch attraction, the single chip microcomputer STM32F103RBT6 reads specific gear positions of 25 gears of the load switches through ports N1-N25 of the gear reading module, the highest gear position CAN be set according to the specific gear positions of the load switches, the single chip microcomputer STM32F103RBT6 CAN also read fault alarm state lines of the two load switches, and the single chip microcomputer STM32F103RBT6 realizes functions of remotely reading gears, shifting gears, reading on-load switch alarms and the like by utilizing CAN communication.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims

1. The on-load switch controller based on the CAN bus is characterized by comprising a CAN communication module, wherein the CAN communication module is used for transmitting data for communication, the CAN communication module is connected with a single chip microcomputer module, the single chip microcomputer module is connected with an internal power supply module, a gear shifting relay module and a gear reading module, and the gear reading module is used for reading and setting gears of an on-load switch; the single chip microcomputer module utilizes CAN communication module realizes long-range reading shelves and gear shifting, internal power module with CAN communication module connects, internal power module is used for doing CAN communication module with the single chip microcomputer module power supply, internal power module is connected with external power module, external power module connects gear shifting relay module, external power module changes the alternating current to the direct current does internal power module with gear shifting relay module power supply, gear shifting relay module is used for controlling the gear shifting that has the load switch.

2. The on-load switch controller based on the CAN bus of claim 1, wherein the main control chip of the CAN communication module is a chip U5, pin 6 of the chip U5 is connected to the single chip microcomputer module through a port CAN _ L, pin 7 of the chip U5 is connected to the single chip microcomputer module through a port CAN _ H, pin 3 of the chip U5 is connected to the internal power supply module, the chip U5 is connected to a chip U4, pin 3 of the chip U4 is connected to the single chip microcomputer module through a port CAN _ TX, and pin 2 of the chip U4 is connected to the single chip microcomputer module through a port CAN _ RX.

3. The CAN bus based on-load switch controller of claim 2, wherein the main control chips of the shift relay module are a chip RLY1 and a chip RLY2, pin 4 of the chip RLY1 is grounded through a transistor Q2, pin 1 of the chip RLY1 is connected to the external power supply module, pin 1 of the chip RLY2 is connected to the external power supply module, pin 4 of the chip RLY2 is grounded through a transistor Q3, the transistor Q2 is connected to port UP through a chip U6, the transistor Q3 is connected to port n through a chip U7, and the shift relay module is connected to the single chip microcomputer module through port UP and port DOWN.

4. The CAN bus based on-load switch controller of claim 1, wherein the main control chips of the single chip module are a chip U2A and a chip U2B, pin 1 of the chip U2B is connected to the internal power module, pin 50 of the chip U2A is connected to port UP, pin 51 of the chip U2A is connected to port DOWN, pin 8 of the chip U2A is connected to port WN, pin 44 of the chip U2A is connected to port CAN _ RX, and pin 45 of the chip U2A is connected to port CAN _ TX.

5. The on-load switch controller based on the CAN bus according to claim 1, wherein the gear reading module comprises a chip P2, a chip P6 and a chip P5, pins 5-20 of the chip P2 are correspondingly connected with ports N2-N17 of the single chip microcomputer module, pin 1 of the chip P2 is connected with port WN of the single chip microcomputer module, pin 3 of the chip P2 is connected with port N1 of the single chip microcomputer module, and pins 1-8 of the chip P6 are correspondingly connected with ports N18-N25 of the single chip microcomputer module.

6. The on-load switch controller based on CAN bus of claim 1, wherein the main control chip of the internal power module is a chip UP1, the input port of the chip UP1 is connected with 24V power supply, and the output port of the chip UP1 is connected with 5V power supply port through a connecting inductor L1.

7. The CAN bus based on-load switch controller of claim 6, wherein the 5V power port is connected with a chip VR1, an output port of the chip VR1 is connected with a 3V3 power port, and the 3V3 power port is connected with a power input port of the chip U2B.

8. The CAN bus based on-load switch controller of claim 6, wherein the 5V power port is connected with a chip U1 through a resistor R5 and an inductor L3, and an output port of the chip U1 is connected with a D5V port through a capacitor C14.

9. The CAN bus based on-load switch controller of claim 1, wherein the 7 pins of the single chip module are connected to a button S1 through a RESET port, one end of the button S1 is connected to a 3V3 power port through a resistor R7, and the other end of the button S1 is grounded through a capacitor C23.

10. The CAN bus based on-load switch controller of claim 1, wherein the external power module employs bright weft switching power supply HDR-30-24.