CN215006629U

CN215006629U - Portable USB-CAN tool

Info

Publication number: CN215006629U
Application number: CN202121223692.8U
Authority: CN
Inventors: 刘汉国; 刘科; 王云龙
Original assignee: Anhui Chenji New Energy Technology Co ltd
Current assignee: Anhui Chenji New Energy Technology Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-12-03
Anticipated expiration: 2031-06-02

Abstract

A portable USB-CAN tool comprising: the USB connecting terminal, the CAN connecting terminal and the data connecting line are arranged on the shell; USB binding post installs in connecting the casing, connects the inside buffer memory module that is equipped with of casing, and USB binding post electric connection buffer memory module, buffer memory module connect CAN binding post through data connecting line, and USB binding post transmits 64 byte data to buffer memory module, and buffer memory module is with 64 byte data storage in an annular buffer memory queue, reads 8 bytes and transmits to CAN binding post. The single-chip microcomputer buffer module with the USB function pins is used, the single-chip microcomputer is enumerated into input equipment by program programming to be communicated with a PC, meanwhile, an upper computer tool is equipped to realize related configuration of the USB-CAN, the problem of untimely transmission during large data volume exchange is solved by adopting an annular buffer mode in numerical control transmission, and data is guaranteed not to be lost during large data interaction.

Description

Portable USB-CAN tool

Technical Field

The utility model relates to a, concretely relates to portable USB-CAN instrument.

Background

At present, two communication modes of a CAN tool and a PC are common, one communication mode is enumerated into a COM port through a serial port chip for communication, and the other communication mode is enumerated into an input device for data exchange with the PC. For a USB-CAN tool that communicates using COM ports: (1) a serial port chip needs to be added, so that the design cost of the tool is increased; (2) the serial port can not meet the requirement of high-speed data communication, and frame loss is serious when a large amount of data is taken in and out; (3) when data is transmitted for a long time, the automatic recovery cannot be realized when the bus is halted due to a bus error.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problem and aims to provide a portable USB-CAN tool.

The utility model discloses the technical problem that will solve adopts following technical scheme to realize:

a portable USB-CAN tool comprising:

the USB connecting terminal, the CAN connecting terminal and the data connecting line are arranged on the shell;

USB binding post installs in connecting the casing, connect the inside buffer memory module that is equipped with of casing, USB binding post electric connection buffer memory module, buffer memory module connects CAN binding post through the data connecting line, USB binding post transmits 64 byte data to buffer memory module, buffer memory module is with 64 byte data storage in an annular buffer memory queue, reads 8 bytes and transmits to CAN binding post.

Furthermore, be equipped with the metal cage in the connection casing, the buffer module is installed inside the metal cage, the metal cage external fixation has radiating fin, be equipped with the constant head tank on the connection casing inside wall, the radiating fin end inserts to the constant head tank.

Furthermore, a limiting block is fixed to the end of the data connecting line, an annular groove is formed in the outer ring of the limiting block, a connecting sleeve is fixed to the side portion of the metal isolation cover, the limiting block is located inside the connecting sleeve, a positioning lug is arranged on the inner side of the connecting sleeve, and the positioning lug is located in the annular groove.

Furthermore, a sealing ring is arranged between the limiting block and the connecting sleeve.

Furthermore, the side part of the connecting shell is provided with an air hole.

The utility model has the advantages that:

the utility model discloses simple structure uses the singlechip buffer memory module that has the USB function pin, uses program programming to enumerate the singlechip into input device and PC and communicates, is equipped with the host computer instrument simultaneously and realizes the relevant configuration to USB-CAN, transmits untimely problem when adopting the mode of annular buffer memory to solve the exchange of big data volume in numerical control transmission, guarantees that data guarantees not lose data when carrying out a large amount of interactions. When the numerical control transmission crashes due to bus errors, self-recovery operation can be carried out, and last parameter configuration is kept.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a structural view of the connecting shell of the present invention;

in the figure: 1. a USB connecting terminal; 2. a CAN terminal; 3. a data link; 4. a power supply chip; 12. connecting the shell; 13. a cache module; 21. a metal isolation cover; 22. a heat dissipating fin; 23. positioning a groove; 24. a limiting block; 25. an annular groove; 26. a connecting sleeve; 27. positioning the bump; 31. a seal ring; 32. and (4) air holes.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Example 1

As shown in fig. 1; a portable USB-CAN tool comprising:

a USB connecting terminal, a CAN connecting terminal and a data connecting line 3;

USB binding post installs in connecting casing 12, connects the inside buffer memory module 13 that is equipped with of casing 12, and USB binding post electric connection buffer memory module 13, buffer memory module 13 connects CAN binding post through data connecting line 3, and USB binding post transmits 64 byte data to buffer memory module 13, and buffer memory module 13 is with 64 byte data storage in an annular buffer memory queue, reads 8 bytes and transmits to CAN binding post.

The cache module 13 adopts a single chip microcomputer chip (model STM32f412XE) with USB3.0 and CAN control; SCM configuration power chip 4(5V to 3.3V power chip: xc6206p332mr)

A CAN driving chip: TDH541 SCANH;

the single-chip microcomputer buffer module with the USB function pins is used, the single-chip microcomputer is enumerated into input equipment by program programming to be communicated with a PC, meanwhile, an upper computer tool is equipped to realize related configuration of the USB-CAN, the problem of untimely transmission during large data volume exchange is solved by adopting an annular buffer mode in numerical control transmission, and data is guaranteed not to be lost during large data interaction. When the numerical control transmission crashes due to bus errors, self-recovery operation can be carried out, and last parameter configuration is kept.

Example 2

On the basis of example 1, as shown in fig. 2; be equipped with metal cage 21 in connecting casing 12, cache module 13 installs inside metal cage 21, and metal cage 21 external fixation has radiating fin 22, is equipped with constant head tank 23 on connecting casing 12 inside wall, and radiating fin 22 end inserts to constant head tank 23.

The end of the data connecting line 3 is fixed with a limiting block 24, the outer ring of the limiting block 24 is provided with an annular groove 25, the side part of the metal isolation cover 21 is fixed with a connecting sleeve 26, the limiting block 24 is positioned inside the connecting sleeve 26, the inner side of the connecting sleeve 26 is provided with a positioning lug 27, and the positioning lug 27 is positioned in the annular groove 25. The data link 3 is fixed.

A sealing ring 31 is arranged between the limiting block 24 and the connecting sleeve 26. Preventing water from entering.

The side of the connecting shell 12 is provided with a vent hole 32. The heat generated by the cache module 13 can be dissipated through the metal shielding case 21 and the heat dissipating fins 22, thereby improving the heat dissipation effect.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A portable USB-CAN tool, comprising:

2. The portable USB-CAN tool according to claim 1, wherein the connection housing has a metal shield, the buffer module is installed inside the metal shield, the metal shield has heat dissipation fins fixed outside, the connection housing has positioning slots on the inner sidewall, and the ends of the heat dissipation fins are inserted into the positioning slots.

3. The portable USB-CAN tool according to claim 2, wherein a stopper is fixed to the end of the data connection line, an annular groove is formed in the outer ring of the stopper, a connection sleeve is fixed to the side of the metal isolation cover, the stopper is located inside the connection sleeve, and a positioning protrusion is arranged on the inner side of the connection sleeve and located in the annular groove.

4. The portable USB-CAN tool according to claim 3, wherein a sealing ring is disposed between the stopper and the connecting sleeve.

5. The portable USB-CAN tool of claim 1, wherein the connecting housing has a vent hole at a side thereof.