CN220232439U

CN220232439U - Vehicle USB and OBD data conversion device

Info

Publication number: CN220232439U
Application number: CN202320466730.5U
Authority: CN
Inventors: 李长龙; 刘孔祥; 李建才
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2023-03-13
Filing date: 2023-03-13
Publication date: 2023-12-22
Anticipated expiration: 2033-03-13

Abstract

The utility model discloses a vehicle USB and OBD data conversion device, which is provided with a conversion unit, wherein the conversion unit is provided with a host interface and at least two equipment interfaces communicated with the host, the host interfaces are connected with a USB interface through signal lines, and the equipment interfaces are connected with OBD interfaces. The utility model can be directly inserted into a USB interface, can be used by plug and play, can simultaneously complete the connection of a plurality of OBD devices, reduces the work of manually disassembling and assembling automobile parts, and keeps the integrity of the vehicle.

Description

Vehicle USB and OBD data conversion device

Technical Field

The utility model relates to the technical field of automobile network communication and diagnosis hardware equipment.

Background

Today, the development of automobile communication service is rapid, and the network communication technology among the components of the automobile is mature, so that the communication technology is mature. Current automobile diagnostics rely on the whole main drive OBD interface. After equipment such as a diagnostic instrument is connected with a main driving OBD port, the route of the whole vehicle network cannot be accurately observed. Whether the signal is transmitted to the gateway or not cannot be forwarded, and whether the controller return signal is returned through the gateway cannot be judged.

When the vehicle needs to be connected with a plurality of OBD interface devices simultaneously, the position of the main driving OBD interface needs to be disassembled and opened, when the network CAN signal of the controller needs to be recorded, the main driving OBD port and the external gateway of the auxiliary driving glove box need to be disassembled and led out, the main driving sending message CAN be realized by means of the movable detachable OBD port, and the message forwarding condition of the gateway signal is recorded at the mobile terminal. Therefore, when a plurality of OBD interface devices are required to be connected simultaneously, the overhaul and test work is extremely troublesome, and the time cost and the labor cost of vehicle maintenance are increased.

Disclosure of Invention

The utility model aims to solve the technical problem of realizing a device for respectively replacing a main driving OBD interface and an auxiliary driving OBD interface by leading out three OBD interfaces based on a USB type A interface.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a vehicle USB and OBD data conversion device is provided with a conversion unit, wherein the conversion unit is provided with a host interface and at least two equipment interfaces communicated with the host, the host interfaces are connected with the USB interfaces through signal lines, and the equipment interfaces are all connected with the OBD interfaces.

The USB interface is used for connecting with a vehicle host.

The host interface of the conversion unit acquires the whole vehicle data and sends the data to each OBD interface in a subpackage mode

The conversion unit adopts a C51 single chip.

The device interfaces are provided with three OBD interfaces and are respectively connected with the three OBD interfaces, and the three OBD interfaces are respectively used for replacing one main driving OBD and two auxiliary driving OBDs.

And a magnetic ring is arranged on a signal line between the conversion unit and the USB interface.

The device interface is connected with the OBD interface through a wire.

The utility model can be directly inserted into a USB interface, can be used by plug and play, can simultaneously complete the connection of a plurality of OBD devices, reduces the work of manually disassembling and assembling automobile parts, and keeps the integrity of the vehicle.

Drawings

The contents of each drawing in the specification of the present utility model are briefly described as follows:

FIG. 1 is a schematic diagram of a vehicle USB and OBD data conversion device;

FIG. 2 is a schematic diagram of signal conversion;

FIG. 3 is a schematic diagram of the switching unit circuit;

the labels in the above figures are: 1. a USB interface; 2. a magnetic ring; 3. a conversion unit; 4. and an OBD interface.

Detailed Description

The following detailed description of the embodiments of the utility model, such as the shape and construction of the components, the mutual positions and connection relationships between the components, the roles and working principles of the components, the manufacturing process and the operating and using method, etc., is provided to assist those skilled in the art in a more complete, accurate and thorough understanding of the inventive concept and technical solution of the present utility model.

The vehicle USB and OBD data conversion device is divided into a plurality of parts by the conversion unit 3, namely the conversion unit 3 is provided with a host interface and at least two equipment interfaces communicated with the host, as shown in figure 1, the host interface is connected with the USB interface 1 through a signal wire, and a magnetic ring 2 is arranged on the signal wire between the conversion unit 3 and the USB interface 1 to avoid signal interference. The equipment interface all is connected with OBD interface 4, and three OBD interface 4 are used for replacing a main OBD and two vice OBD that drive respectively, and the equipment interface passes through wire connection OBD interface 4, through wire extension interface distance, conveniently connects check out test set, and USB interface 1 is used for connecting the vehicle host computer, and OBD interface 4 is used for connecting different check out test set.

The USB TypeA interface USB (Universal Serial Bus) is named as a universal serial bus and is a serial bus. The application in the consumer electronics field is relatively wide, such as notebook computers, desktop computers, mobile phones, MP3, tablet computers, set-top boxes, photographic equipment, game machines and the like. The current common protocol is TypeA3.0, the transmission bandwidth is 10Gbps, and the latest 3.1 protocol transmission bandwidth is 20Gbps. OBD is an abbreviated proper term, commonly known as OnBoard diagnostics, an on-board automated diagnostic system.

The OBD device can detect the running conditions of other modules such as an engine on an automobile in real time, and if the running conditions are abnormal, the running conditions can be specifically diagnosed and then stored in a memory of the system. The collected information plays a very great role in repairing and maintaining the vehicle, and a serviceman can quickly position the position of the problem according to the obtained data, so that repairing time is greatly saved. The vehicle USB and OBD data conversion device lets whole car pencil data roll out through a USB interface 1, and the data carries out the subcontracting and sends, transmits respectively to simulation OBD and vice driving OBD, and the normal host factory is that the owner only has the diagnosis CAN passageway, CAN directly communicate with the controller or realize based on vice driving OBD mouth, so signal conversion between the interface needs higher speed.

The conversion unit 3 designs a signal conversion circuit based on the C51 singlechip, converts the signal in the USB interface 1 to OBD, or the OBD sends the signal through the C51 singlechip circuit, and the circuit schematic diagram is shown in FIG. 3: the signal conversion of the USB protocol and the OBD protocol CAN be related to the 51 single-chip microcomputer, the existing conversion protocol CAN be adopted, and the signal of the USB interface 1 CAN be ensured to be interacted with the OBD interface 4 smoothly, so that the signal conversion based on the C51 single-chip microcomputer interface is realized, and the OBD equipment is interacted with the CAN network data of the whole vehicle.

The device can be applied to the scene such as after-sales vehicle fault detection, and the problem of the vehicle can be rapidly positioned on the production line, so that the related parts of the vehicle do not need to be disassembled. After sales, the problems can be quickly cleared based on the patent, and a problem clearing direction is provided for a repair technician; for example, the system is used after the user purchases the vehicle, so that the user can better solve the information related to the whole vehicle, such as the whole vehicle network software configuration.

The using method comprises the following steps of connecting the USB interface 1 of the wire harness into a USB slot of an automobile host, and connecting communication equipment after the whole automobile is electrified, wherein the main application scenarios are as follows: 1. the diagnosis equipment is inserted into the simulated main driving port to transmit data, and the scene is common diagnosis. 2. And accessing two diagnostic devices, wherein the device A transmits a message at the primary driving OBD, and the device B receives the message at the secondary driving OBD, and the scene test is mainly to detect whether the gateway forwards the message transmitted by the primary driving. 3. The diagnosis device is directly connected to the secondary driving OBD, the network diagnosis test can be directly carried out on a single piece, whether the diagnosis fault exists in the controller or not and whether the network signal of the controller is forwarded or not are directly detected.

While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the above embodiments, but is capable of being modified or applied directly to other applications without modification, as long as various insubstantial modifications of the method concept and technical solution of the utility model are adopted, all within the scope of the utility model.

Claims

1. The utility model provides a vehicle USB and OBD data conversion device which characterized in that: the device is provided with a conversion unit, the conversion unit is provided with a host interface and at least two equipment interfaces communicated with the host, the host interfaces are connected with a USB interface through signal lines, and the equipment interfaces are all connected with OBD interfaces.

2. The vehicle USB and OBD data conversion device according to claim 1, wherein: the USB interface is used for connecting with a vehicle host.

3. The vehicle USB and OBD data conversion device according to claim 2, wherein: and the host interface of the conversion unit acquires the whole vehicle data and sends the data to each OBD interface in a subpackage mode.

4. A vehicle USB and OBD data conversion device according to claim 3, characterized in that: the conversion unit adopts a C51 single chip.

5. The vehicle USB and OBD data conversion device according to any one of claims 1-4, wherein: the device interfaces are provided with three OBD interfaces and are respectively connected with the three OBD interfaces, and the three OBD interfaces are respectively used for replacing one main driving OBD and two auxiliary driving OBDs.

6. The vehicle USB and OBD data conversion device according to claim 5, wherein: and a magnetic ring is arranged on a signal line between the conversion unit and the USB interface.

7. The vehicle USB and OBD data conversion device according to claim 6, wherein: the device interface is connected with the OBD interface through a wire.