CN204089852U - Based on the CAN protocol communication board of CANBUS - Google Patents

Abstract

Based on a CAN protocol communication board of CANBUS, primarily of control circuit, CAN communication circuit, serial communication circuit composition.The utility model utilizes embedded microprocessor as control core, realizes the mutual conversion of CANBUS and serial ports.The utility model is the scheme that user provides a kind of novel CAN BUS and serial ports and mutually changes.May be used on, based in CANBUS intelligent home control system, to access different serial equipments by CAN protocol communication board in intelligent domestic system, the entirety realizing plurality of devices controls, and has promotion and application and is worth.

Description

Based on the CAN protocol communication board of CANBUS

Technical field

The utility model belongs to Intelligent housing field, is specifically related to a kind of CAN protocol communication board based on CANBUS, realizes the mutual conversion of CANBUS and serial ports.

Background technology

At present, in Intelligent housing field, the interface of the distinct device of different manufacturers is not quite similar, if think unified these equipment of control, just needs to be connected in a bus unified for these equipment.The equipment adapted with its own interfaces oneself produced can only be accessed in present a lot of intelligent home control systems, be difficult to the product of other producers of access.Such function can not meet the different demands of user to equipment.

Summary of the invention

The utility model object is the compatibility issue solving various equipment in the prior art of Smart Home field, provides a kind of CAN protocol communication board based on CANBUS.

The utility model utilizes embedded microprocessor as the control core of communication board.The described CAN protocol communication board based on CANBUS comprises control circuit, CAN communication circuit and serial communication circuit.

Described control circuit is made up of embedded microprocessor and peripheral circuit thereof; This control circuit is connected with described CAN communication circuit and serial communication circuit respectively.

Described control circuit is connected with CAN communication circuit, realizes the transmitting-receiving of CANBUS data, serves the function of Long-distance Control and information feed back.Described control circuit is connected with serial communication circuit, realizes the transmitting-receiving of serial data.So just can realize the mutual conversion of CANBUS data and serial data.

advantage of the present utility model and good effect:

Described CAN protocol communication board can be used as the interface equipment of the intelligent home control system based on CANBUS, realizes the access of different serial equipment.

Accompanying drawing explanation

Fig. 1 is CAN protocol communication board integrated circuit theory diagram;

Fig. 2 is control circuit schematic diagram;

Fig. 3 is CAN communication circuit schematic diagram;

Fig. 4 is serial communication circuit schematic diagram;

In figure, 1-1 control circuit, 1-2 CAN communication circuit, 1-3 serial communication circuit.

embodiment:

Example below further illustrates the application of CAN protocol communication board.

Given example does not affect the further protection of the utility model patent.

embodiment 1

As shown in Figure 1, the CAN protocol communication board based on CANBUS that the utility model provides, comprises control circuit, CAN communication circuit and serial communication circuit.

Described control circuit is connected with described CAN communication circuit and serial communication circuit respectively.

Control circuit 1-1 as shown in Figure 2, is made up of embedded microprocessor STM32F103C6 and peripheral circuit thereof, and this chip, with CAN interface, can realize the function of CAN controller.Comprise the toggle switch of two 8 as shown in Figure 2 in control circuit 1-1, SW1 and SW2, the function of device address in setting intelligent domestic system can be played.

CAN communication circuit 1-2 as shown in Figure 3, is made up of CAN transceiver TJA1042, is the interface between CAN controller and physical bus, in control circuit 1-1, the CAN interface of embedded microprocessor provides differential transmission and receiving function.

Serial communication circuit as shown in Figure 4, wherein comprises RS485 communication chip VP3082 and application circuit thereof, and this chip is directly connected with one group of serial line interface of embedded microprocessor in control circuit 1-1, realizes the data communication of RS485; Serial communication circuit as shown in Figure 4, wherein also comprises RS232 communication chip MAX232 and application circuit thereof, and this chip is directly organized serial line interface with another of embedded microprocessor in control circuit 1-1 and is connected, and realizes the data communication of RS232.

By the embedded microprocessor in control circuit 1-1, the conversion of CANBUS data and RS485 and RS232 data can be realized, and then can be implemented in the distinct device accessing RS485 and RS232 interface in the intelligent domestic system based on CANBUS.

Claims (1)

1. based on a CAN protocol communication board of CANBUS, it is characterized in that, this protocol plate comprises control circuit, CAN communication circuit and serial communication circuit;

Described control circuit is made up of embedded microprocessor and peripheral circuit thereof; This control circuit is connected with described CAN communication circuit and serial communication circuit respectively.