CN203406907U - CAN communication transition device and communication system - Google Patents

Abstract

The utility model discloses a CAN communication transition device and a communication system. The CAN communication transition device comprises two CAN drivers connected with CAN buses, and the CAN communication transition device can be simultaneously connected with two CAN networks. When data of network nodes in different CAN networks need to be exchanged, the exchanging is realized via the CAN communication transition device sending the data to be exchanged to a computer, so that burdens and power consumption of the network nodes are reduced. By employing the CAN communication transition device, transition between CAN signals and other signals is achieved, and communication between the network nodes in the different CAN networks is also achieved.

Description

CAN transition of communications equipment and communication system

Technical field

The utility model relates to communication technical field, more particularly, relates to a kind of CAN transition of communications equipment and communication system.

Background technology

CAN network, i.e. controller local area network, is one of most widely used fieldbus in the world.In actual applications, be often that CAN network and other mixture of networks are used, this just need to be converted to other signal CAN signal, and as rs 232 serial interface signal, the identification that CAN signal is converted to other signal is referred to as CAN transition of communications equipment.

Utility model people, in realizing process of the present utility model, finds the function singleness of existing CAN transition of communications equipment, can only realize the conversion between CAN signal and other signal.

Utility model content

The purpose of this utility model is to provide a kind of CAN transition of communications equipment, to increase the function of CAN transition of communications equipment.

For achieving the above object, the utility model provides following technical scheme:

A transition of communications equipment, comprising:

The CAN driver being connected with CAN bus and the 2nd CAN driver;

The CAN controller being connected with a described CAN driver;

The 2nd CAN controller being connected with described the 2nd CAN driver;

Single-chip microcomputer simultaneously that be connected with the 2nd CAN controller with a described CAN controller;

The level transferring chip being connected with described single-chip microcomputer.

Above-mentioned CAN transition of communications equipment, preferred, also comprise:

Control with a CAN the first optical coupler being connected with a described CAN driver respectively;

Control with the 2nd CAN the second optical coupler being connected with described the 2nd CAN driver respectively.

Above-mentioned CAN transition of communications equipment, preferred, described the first optical coupler and the second optical coupler are 6N137 optical coupler.

Above-mentioned CAN transition of communications equipment, preferred, described single-chip microcomputer is AT89C51 single-chip microcomputer.

, comprising:

CAN transition of communications equipment as above;

A CAN network and the 2nd CAN network simultaneously that be connected with described CAN transition of communications equipment;

The computer being connected with described CAN transition of communications equipment.

Known by above scheme, a kind of CAN transition of communications equipment that the application provides, comprise two CAN drivers, can connect two CAN networks simultaneously, when the network node in different CAN networks need to carry out exchanges data, network node information exchange in the one CAN network is crossed a CAN driver and is transferred to after the CAN transition of communications equipment that the application provides, CAN transition of communications equipment can be transferred to computer by this information or dependent instruction, after being processed by computer, send to again CAN transition of communications equipment, then, CAN transition of communications equipment is given the 2nd CAN network node by the 2nd CAN driver by the communication after information or processing, that is to say, when the network node in different CAN networks need to carry out exchanges data, the CAN transition of communications equipment that can provide by the embodiment of the present application sends to computer to complete the data of needs exchange, reduced the burden of network node, reduced the power consumption of network node, therefore, the CAN transition of communications equipment that the embodiment of the present application provides, when realizing the conversion of CAN signal and other signal, can also realize the communication between the network node in different CAN networks.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The structural representation of a kind of CAN transition of communications equipment that Fig. 1 provides for the embodiment of the present application;

The structural representation of the another kind of CAN transition of communications equipment that Fig. 2 provides for the embodiment of the present application;

The structural representation of a kind of communication system that Fig. 3 provides for the embodiment of the present application.

Term " first " in specification and claims and above-mentioned accompanying drawing, " second ", " the 3rd " " 4th " etc. (if existence) are for distinguishing similar part, and needn't be for describing specific order or precedence.The data that should be appreciated that such use suitably can exchanged in situation, so that the application's described herein embodiment can be with the order enforcement except here illustrated.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1, the structural representation of a kind of CAN transition of communications equipment that Fig. 1 provides for the embodiment of the present application, can comprise:

The one CAN driver 101 and the 2nd CAN driver 102; Wherein, a described CAN driver 101 and the 2nd CAN driver 102 can be 82C250CAN bus driver.When concrete application, a CAN driver 2011 is connected with CAN bus with the 2nd CAN driver 2012.

The CAN controller 103 being connected with a described CAN driver 101;

The 2nd CAN controller 104 being connected with described the 2nd CAN driver 102;

Wherein, a described CAN controller 103 and the 2nd CAN controller 104 can be MCP2510CAN controller.

Single-chip microcomputer 105 simultaneously that be connected with the 2nd CAN controller 104 with a described CAN controller 103; Single-chip microcomputer 105 is realized the operation to CAN by the register of access the one CAN controller 103 and/or the 2nd CAN controller 104 inside, is about to CAN signal and is converted to the signal that single-chip microcomputer 105 can be identified.Specifically how to change the common practise that belongs to this area, repeat no more here.

Described single-chip microcomputer 105 can be AT89C51 single-chip microcomputer, and specifically, when connecting, the first port in a data-in port for CAN control 103 and the P0 mouth of single-chip microcomputer 105 is connected; The one CAN controls the second port in the P0 mouth of 103 data-out port and single-chip microcomputer 105 and is connected, and the sheet of a CAN control 103 selects the first port in the P2 mouth of port and single-chip microcomputer to be connected; The interruptive port of the one CAN control 103 is connected with external interrupt 0 port of single-chip microcomputer; The 3rd port in the 2nd data-in port of CAN control 104 and the P0 mouth of single-chip microcomputer is connected; The 2nd CAN controls the 4th port in the P0 mouth of 104 data-out port and single-chip microcomputer and is connected, and the sheet of the 2nd CAN control 104 selects the second port in the P2 mouth of port and single-chip microcomputer to be connected; The interruptive port of the 2nd CAN control 104 is connected with external interrupt 1 port of single-chip microcomputer;

The level translator 106 being connected with described single-chip microcomputer 105.Wherein, described level translator 106 can be MAX232 chip,, the signal of single-chip microcomputer output is converted to RS-232 signal that is.

A kind of CAN transition of communications equipment that the embodiment of the present application provides, comprise two CAN drivers, can connect two CAN networks simultaneously, when the network node in different CAN networks need to carry out exchanges data, network node information exchange in the one CAN network is crossed a CAN driver and is transferred to after the CAN transition of communications equipment that the application provides, CAN transition of communications equipment can be transferred to computer by this information or dependent instruction, by computer, undertaken sending to again CAN transition of communications equipment (or directly sending) after analyzing and processing, then, CAN transition of communications equipment is given the 2nd CAN network node by the 2nd CAN driver by the communication after information or analyzing and processing, that is to say, when the network node in different CAN networks need to carry out exchanges data, the CAN transition of communications equipment that can provide by the embodiment of the present application is converted to rs 232 serial interface signal by the data of needs exchange and sends to computer to complete, reduced the burden of network node, reduced the power consumption of network node, therefore, the CAN transition of communications equipment that the embodiment of the present application provides, when realizing the conversion of CAN signal and other signal, can also realize the communication between the network node in different CAN networks.

Above-described embodiment, preferred, in order to prevent that instantaneous high pressure from scurrying into the harm that CAN conversion equipment is caused, the structural representation of the another kind of CAN transition of communications equipment that the embodiment of the present application provides as shown in Figure 2, can also comprise:

The first optical coupler 106, is connected with a CAN controller 103 with a described CAN driver 101 respectively;

The second optical coupler 107, is connected with the 2nd CAN controller 104 with described the 2nd CAN driver 102 respectively.

The embodiment of the present application also provides a kind of communication system, and its structural representation as shown in Figure 3, can comprise:

CAN transition of communications equipment 301 as above;

The CAN network being simultaneously connected with described CAN transition of communications equipment 301 (in Fig. 3 with CAN bus signal an one CAN network) and the 2nd CAN network (in Fig. 3 with the 2nd CAN bus illustrate the 2nd CAN network);

The computer 302 being connected with described CAN transition of communications equipment 301.

Exchanges data between a described CAN network and the 2nd CAN network completes by described CAN transition of communications equipment 301 and computer 302, specifically can be referring to embodiment illustrated in fig. 1.

Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (5)

1. a CAN transition of communications equipment, is characterized in that, comprising:

The CAN driver being connected with CAN bus and the 2nd CAN driver;

The CAN controller being connected with a described CAN driver;

The 2nd CAN controller being connected with described the 2nd CAN driver;

Single-chip microcomputer simultaneously that be connected with the 2nd CAN controller with a described CAN controller;

The level transferring chip being connected with described single-chip microcomputer.

2. CAN transition of communications equipment according to claim 1, is characterized in that, also comprises:

Control with a CAN the first optical coupler being connected with a described CAN driver respectively;

Control with the 2nd CAN the second optical coupler being connected with described the 2nd CAN driver respectively.

3. CAN transition of communications equipment according to claim 2, is characterized in that, described the first optical coupler and the second optical coupler are 6N137 optical coupler.

4. CAN transition of communications equipment according to claim 1, is characterized in that, described single-chip microcomputer is AT89C51 single-chip microcomputer.

5. a communication system, is characterized in that, comprising:

CAN transition of communications equipment as described in claim 1-4 any one;

A CAN network and the 2nd CAN network simultaneously that be connected with described CAN transition of communications equipment;

The computer being connected with described CAN transition of communications equipment.

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