CN210222533U

CN210222533U - CANBUS bus control system of data acquisition unit

Info

Publication number: CN210222533U
Application number: CN201921396308.7U
Authority: CN
Inventors: Xiang Zhou; 周祥
Original assignee: Chongqing Source Of Green Environmental Technology Co Ltd
Current assignee: Chongqing Zhongyuan Lvlan Energy Technology Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-03-31
Anticipated expiration: 2029-08-26

Abstract

The utility model discloses a data collection station CANBUS bus control system, it includes central control platform, data collection station and CSM module, the CSM module is including embedding the CAN interface circuit in the CSM module, central control platform passes through TCP/IP agreement with data collection station and is connected, the RXD pin of CSM module connects data collection station MCU's TXD pin, the TXD pin of CSM module connects data collection station MCU's RXD pin, CAN interface circuit's CANH pin and CANL pin are direct and CAN bus connection, be equipped with CANBUS protocol module in the data collection station. The equipment of the CAN bus CAN be converted into the 485 bus for control, and all CANBUS equipment information is supported to be accessed, so that the control is facilitated.

Description

CANBUS bus control system of data acquisition unit

Technical Field

The utility model belongs to the communication field, concretely relates to data collection station CANBUS bus control system.

Background

The CAN bus is an international standardized serial communication protocol with high performance and high reliability, has the advantages of strong real-time performance, long transmission distance, strong anti-electromagnetic interference capability, low cost and the like compared with an RS485 bus, is widely applied to the aspects of industrial automation, ships, medical equipment, industrial equipment and the like, and has more and more detection control instruments and automation equipment in the building automatic control field and adopts the CAN bus technology. The industrial field bus adopts a data collector (or called a bus controller) to be connected with a PC (personal computer), so that data organization, data transformation and data transmission between an intelligent control software platform and a field intelligent instrument and an automation device are realized, the data structure of the software platform can be effectively optimized, and the programming of the software platform is simplified. Due to the continuous development of the technology, the CAN bus type instruments are mostly adopted by the existing instruments and meters, and the existing mode causes that various instruments and meters based on the CAN bus CAN not be directly accessed to the control platform.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a data collection station CANBUS bus control system CAN convert the equipment of CAN bus to the 485 bus and control, supports to insert all CANBUS equipment information, more does benefit to control.

For this reason, the utility model discloses a data collection station CANBUS bus control system, it includes central control platform, data collection station and CSM module, the CSM module is including the CAN interface circuit of embedding in the CSM module, central control platform passes through TCP/IP agreement with data collection station and is connected, the RXD pin of CSM module connects data collection station MCU's TXD pin, the TXD pin of CSM module connects data collection station MCU's RXD pin, CAN interface circuit's CANH pin and CANL pin are direct and CAN bus connection, be equipped with CANBUS protocol module in the data collection station.

Furthermore, an electrical isolation module is integrated in the CSM module and arranged between the MCU and the CAN interface circuit.

Further, the CSM module is CSM100 or CSM 100T.

Further, the power supply of the CSM module is provided by the built-in power supply of the data collector.

The utility model has the advantages that: and the data acquisition unit is provided with an extended CAN interface for realizing the access of CAN bus equipment information through a 485 bus to realize a control function and expanding the control of an intelligent instrument.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. In the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic block diagram of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1: the CANBUS bus control system of the data collector comprises a central control platform, a data collector and a CSM module, wherein the CSM module comprises a CAN interface circuit embedded in the CSM module, the central control platform is connected with the data collector through a TCP/IP protocol, an RXD pin of the CSM module is connected with a TXD pin of a data collector MCU, the TXD pin of the CSM module is connected with the RXD pin of the data collector MCU, a CANH pin and a CANL pin of the CAN interface circuit are directly connected with a CAN bus, and a CANBUS protocol module is arranged in the data collector.

Further, the CSM module is CSM100 or CSM 100T.

In this embodiment, a CSM100 chip is used as a CSM module, wherein a GND pin of the CSM100 chip is grounded, a Vin pin is connected to a 5V dc power supply built in a data collector, the data collector provides power for the operation of the CSM100, and the electrical isolation module is integrated in a CSM100 chip series, so that the electrical isolation module has certain interference resistance, and simultaneously has moisture-proof and vibration-proof capabilities, thereby improving the reliability of the electrical isolation module used in a severe environment.

Specifically, in this embodiment, because the CSM100 chip further integrates an analog device and a digital device, which are required for implementing conversion between the CAN and the UART, and a photocoupler and a DC-DC converter, in the embodiment, the data receiving end and the transmitting end of the CSM100 chip are connected to the data transmitting end and the receiving end corresponding to the control serial port of the data collector MCU, respectively, to implement data transmission, and in addition, the CANH and CANL of the CSM100 chip are directly connected to the CAN bus device to implement data access, so as to send data information of the CAN bus device to the MCU of the CSM100 chip via the CAN interface circuit, then to the data collector MCU, and then to the central control platform, where the data collector is equipped with a CANBUS protocol module for data collection, which is used for controlling device driving, where the working temperature range in this embodiment is the working temperature range: -40 ℃ to +85 ℃; CANBUS communication rate: 5 Kbps-1000 Kbps, UART Baud rate: the highest frame flow of 600 bps-115200 bps: 400 frames/second.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The CANBUS bus control system of the data collector is characterized by comprising a central control platform, the data collector and a CSM module, wherein the CSM module comprises a CAN interface circuit embedded in the CSM module, the central control platform is connected with the data collector through a TCP/IP protocol, an RXD pin of the CSM module is connected with a TXD pin of a data collector MCU, the TXD pin of the CSM module is connected with the RXD pin of the data collector MCU, a CANH pin and a CANL pin of the CAN interface circuit are directly connected with a CAN bus, and a CANBUS protocol module is arranged in the data collector.

2. The CANBUS control system of claim 1, wherein the CSM module is integrated with an electrical isolation module disposed between the CSM module MCU and the CAN interface circuit.

3. The data collector CANBUS control system of claim 1, wherein the CSM module is CSM100 or CSM 100T.

4. The CANBUS control system of claim 1, wherein the power of the CSM module is provided by the power supply built in the data collector.