CN209842613U

CN209842613U - Data transmission device

Info

Publication number: CN209842613U
Application number: CN201921017832.9U
Authority: CN
Inventors: 王鑫
Original assignee: Beijing United Rak Thai Technology Co Ltd
Current assignee: Beijing United Rak Thai Technology Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2019-12-24
Anticipated expiration: 2029-07-02

Abstract

The embodiment of the utility model discloses a data transmission device, which is characterized by comprising at least one path of CANFD interface, a terminal resistor dial switch, a CANFD data transceiver circuit, a power circuit, a control circuit and a data transmission circuit; the CANFD data transceiver circuit, the control circuit and the data transmitting circuit are sequentially electrically connected, and the CANFD interface and the terminal resistance dial switch are respectively electrically connected with the CANFD data transceiver circuit. The utility model provides a pair of data transmission device expands interface, the wireless LAN interface of ethernet with data transmission's interface from single USB data transmission interface, accomplishes CANFD data receiving and dispatching, has greatly expanded the interface type of data receiving and dispatching, and has followed the use of CANFD transmission agreement, has improved various interface data transmission's efficiency greatly.

Description

Data transmission device

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a data transmission device.

Background

At present, a USB interface CANFD bus card is used for a computer to receive and transmit CANFD bus data, and no equipment capable of using an Ethernet interface to receive and transmit CANFD bus data exists in the market, so that the application range of a CANFD bus is greatly limited. And USB interface CANFD bus card on the existing market still has a lot of drawbacks when using, 1) USB data line need be inserted on the computer when USB interface CANFD bus card uses, USB transmission distance compares the ethernet transmission distance and is far shorter. The interface card is only suitable for developing debugging and applications in which the interface card and the computer are kept in close range. And one CANFD bus interface card can only be used by one computer. 2) The use of the CAN FD bus card with the USB interface requires the installation of a USB driver, and an operating system without developing the driver cannot use the interface card. 3) The USB communication needs to distinguish master and slave devices, and the remote relay transmission of two CANFD networks cannot be realized by two sets of same interface cards.

Therefore, it is very important to develop a variety of CANFD data transceiver devices by breaking away the CANFD bus card and only having a USB interface to transmit and receive data to and from the computer.

Disclosure of Invention

Therefore, an embodiment of the present invention provides a data transmission device to solve the problem in the prior art that an application range is greatly limited because a CANFD bus card cannot be applied to an ethernet interface but only to a USB interface.

In order to achieve the above object, an embodiment of the present invention provides a data transmission device, and the specific technical solution is as follows:

the embodiment of the invention provides a data transmission device, which is characterized in that at least one path of CANFD interface, a terminal resistor dial switch, a CANFD data transceiver circuit, a power circuit, a control circuit and a data transmission circuit; the CANFD data transceiver circuit, the control circuit and the data transmitting circuit are sequentially electrically connected, and the CANFD interface and the terminal resistance dial switch are respectively electrically connected with the CANFD data transceiver circuit.

Further, the device also comprises a CANFD isolator, the power supply circuit comprises an isolated power supply circuit, the isolated power supply circuit is respectively electrically connected with the CANFD isolator and the CANFD transceiver, and the CANFD isolator is electrically connected with the CANFD data transceiver circuit.

Further, the data transmission circuit comprises a local area network interface circuit, a local area network transceiver, a wireless local area network interface circuit and a wireless local area network controller; the control circuit comprises a local area network controller, a serial peripheral interface controller, a CANFD controller, an external memory card interface bus controller (SDIO controller) and an I/O interface; the local area network controller is electrically connected with the local area network interface circuit through the local area network transceiver, and the wireless local area network interface is electrically connected with the serial peripheral interface controller through the wireless local area network controller.

Furthermore, the device also comprises a status indicator light, a reset switch and a default configuration recovery switch which are respectively electrically connected with the I/O interface.

Further, the device also comprises an SD card interface which is electrically connected with the control circuit.

Further, the number of the CANFD interfaces is the same as the number of the CANFD data transceiver circuits, the CANFD isolators, and the isolation power supplies.

Furthermore, the power supply circuit comprises a power supply conversion circuit, a direct current-to-direct current circuit and a power supply interface; the power conversion circuit is electrically connected with the direct current-to-direct current circuit and the power interface respectively.

The embodiment of the invention has the following advantages:

the data transmission device provided by the invention expands the interface of data transmission from a single USB data transmission interface to the interface of Ethernet and the interface of wireless local area network to complete the CANFD data receiving and transmitting, greatly expands the interface types of data receiving and transmitting, and greatly improves the efficiency of data transmission of various interfaces along with the use of CANFD transmission protocol.

Furthermore, the same number of CANFD isolators and isolated power supplies are arranged in the device in a matched manner, so that the anti-interference capability of the CANFD data transmission device is effectively ensured.

Further, the device is integrated with an indicator light and a manual switch, so that the device is more convenient to use.

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 description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.

Fig. 1 is a schematic block diagram of a data transmission apparatus according to embodiment 1 of the present invention;

fig. 2 is a schematic block diagram of a preferred structure of a data transmission apparatus according to embodiment 2 of the present invention.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic block diagram of a data transmission device according to embodiment 1 of the present invention, including at least one CANFD interface, a terminal resistor dial switch, a CANFD data transceiver circuit, a power circuit, a control circuit, and a data transmission circuit; the CANFD data transceiver circuit, the control circuit and the data transmitting circuit are sequentially electrically connected, and the CANFD interface and the terminal resistance dial switch are respectively electrically connected with the CANFD data transceiver circuit.

An optional embodiment of the present invention further includes that the apparatus further includes a CANFD isolator, the power supply circuit includes an isolated power supply circuit, the isolated power supply circuit is electrically connected to the CANFD isolator and the CANFD transceiver respectively, and the CANFD isolator is electrically connected to the CANFD data transceiver circuit.

An optional embodiment of the present invention further includes that the number of the CANFD interfaces is equal to the number of the CANFD data transceiver circuits, the CANFD isolators, and the isolation power supplies.

Fig. 2 is a schematic block diagram of a preferred structure of a data transmission device according to embodiment 2 of the present invention. The CANFD interface circuit comprises two paths of CANFD interfaces, a terminal resistor dial switch, a CANFD data receiving and transmitting circuit, a power circuit, a control circuit and a data transmitting circuit; the power circuit is respectively electrically connected with the CANFD data transceiver circuit and the data transmitting circuit, the CANFD interface, the CANFD data transceiver circuit, the control circuit and the data transmitting circuit are sequentially electrically connected, and the terminal resistance dial switch is electrically connected with the CANFD data transceiver circuit.

The CANFD data transceiver comprises two paths of CANFD isolators and two paths of isolation power supplies, wherein each path of CANFD isolator is electrically connected with one path of CANFD data transceiver circuit and the isolation power supply respectively.

The data transmission circuit comprises a Local Area Network (LAN) interface circuit, a local area network controller, a Wireless Local Area Network (WLAN) interface circuit and a WLAN controller; the control circuit includes a LAN controller, a serial peripheral interface controller (SPI controller), a CANFD controller, an SDIO controller, and an I/O interface, that is, the MCU is integrated with the above circuits, to implement corresponding functions, which is the prior art and is not described herein again. The LAN controller is electrically connected with the LAN interface circuit through the local area network transceiver, and the WLAN interface is electrically connected with the SPI controller through the WLAN controller.

The system also comprises a status indicator lamp, a reset switch and a default configuration recovery switch which are respectively electrically connected with the I/O interface.

The SD card interface is electrically connected with the control circuit.

The power supply circuit comprises a power supply conversion circuit, a direct current-to-direct current circuit and a power supply interface; the power conversion circuit is electrically connected with the direct current-to-direct current circuit and the power interface respectively.

It should be noted that the circuit connection modes of the circuits and the interfaces all belong to the conventional circuit connection modes in the field, and belong to the prior art, and are not described herein again.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A data transmission device is characterized by comprising at least one path of CANFD interface, a terminal resistor dial switch, a CANFD data transceiver circuit, a power circuit, a control circuit and a data transmission circuit; the CANFD data transceiver circuit, the control circuit and the data transmitting circuit are sequentially electrically connected, and the CANFD interface and the terminal resistance dial switch are respectively electrically connected with the CANFD data transceiver circuit.

2. The apparatus of claim 1, further comprising a CANFD isolator, wherein the power supply circuit comprises an isolated power supply circuit, wherein the isolated power supply circuit is electrically connected to the CANFD isolator and a CANFD transceiver, respectively, and wherein the CANFD isolator is electrically connected to the CANFD data transceiver circuit.

3. The apparatus of claim 1, wherein the data transmission circuitry comprises local area network interface circuitry, a local area network transceiver and wireless local area network interface circuitry, a wireless local area network controller; the control circuit comprises a local area network controller, a serial peripheral interface controller, a CANFD controller, an external memory card interface bus controller and an I/O interface; the local area network controller is electrically connected with the local area network interface circuit through the local area network transceiver, and the wireless local area network interface is electrically connected with the serial peripheral interface controller through the wireless local area network controller.

4. The apparatus of claim 3, further comprising a status indicator light, a reset switch, and a restore default configuration switch, each electrically connected to the I/O interface.

5. The apparatus of claim 1, further comprising an SD card interface electrically connected with the control circuit.

6. The apparatus of claim 2, wherein the number of CANFD interfaces is the same as the number of CANFD data transceiving circuitry, the CANFD isolators, and the isolated power supplies.

7. The apparatus of claim 1, wherein the power circuit comprises a power conversion circuit, a dc-to-dc circuit, a power interface; the power conversion circuit is electrically connected with the direct current-to-direct current circuit and the power interface respectively.