CN204978502U

CN204978502U - On -vehicle signal acquisition system based on OBD interface

Info

Publication number: CN204978502U
Application number: CN201520735001.0U
Authority: CN
Inventors: 何向泉
Original assignee: NANJING DORON TECHNOLOGY Co Ltd
Current assignee: Duolun Polytron Technologies Inc
Priority date: 2015-09-21
Filing date: 2015-09-21
Publication date: 2016-01-20
Anticipated expiration: 2025-09-21

Abstract

The utility model discloses an on -vehicle signal acquisition system based on OBD interface, including treater, diagnosis mouthful bus, power module, ultrasonic module and communication bus, power module is each module power supply, ultrasonic module measures the object of vehicle both sides or the distance of personnel and vehicle to the range signal that will gather transmits for the treater, on -vehicle signal is gathered to diagnosis mouthful bus to give the treater through the OBD interface with on -vehicle signal transmission, the treater passes through communication bus with the on -vehicle signal of received and range signal to be transmitted for outside on -vehicle computer. This on -vehicle signal acquisition system convenient to use, safe, small, with low costs, the maintenance cost is few, the use is reliable and stable.

Description

A kind of cab signal acquisition system based on OBD interface

Technical field

The utility model relates to a kind of cab signal acquisition system, particularly relates to a kind of cab signal acquisition system based on OBD interface, is mainly used in self-propelled vehicle and drives test system and drive training system.

Background technology

Drive test system traditional and drive in training system, when needing the signal needed for collection, needing to disassemble vehicle body, finding out and drive each controller module interface of test system, utilize signal collecting device that various signal is input to industrial computer by I/O port.Tradition is driven and is examined acquisition system and need to destroy vehicle body original circuit, and the doubling reading manner of collecting device to vehicle body signal wire (SW) exists certain injury to vehicle body simultaneously, and the higher professional of needs of operating process risk just can complete simultaneously.Traditional signal collecting device is bulky and heavy, is unfavorable for installing and overhauling loaded down with trivial details, and stabilization of equipment performance is poor simultaneously, unstable to the collection of engine speed and vehicle speed signal.

Summary of the invention

Goal of the invention: for solving the problems of the technologies described above, the utility model provides a kind of cab signal acquisition system based on OBD interface, and this level of integrated system is high, volume is little, easy for installation, and cost is low, uses very reliable and stable.

Technical scheme: the technical scheme that the utility model provides is: a kind of cab signal acquisition system based on OBD interface, comprising: treater, diagnostics port bus, power module, ultrasonic wave module and communication bus; Power module is that modules is powered; The object or person person of ultrasonic wave module measuring vehicle both sides and the distance of vehicle, and by the distance signal transmission that collects to treater; Diagnostics port bus gathers cab signal, and by OBD interface, cab signal is transferred to treater; The cab signal received and range signal are transferred to outside vehicle-mounted computer by communication bus by treater.

As preferably, described diagnostics port bus comprises CAN and isolates bus and/or K bus, and CAN isolates bus and is connected with treater respectively with K bus.

As preferably, described communication bus can be: CAN or TCP bus or RS485 bus or RS422 bus or wireless bus.

As preferably, described power module built-in over-voltage and over-current short-circuit protection unit, supports the input of 6 ~ 36V voltage.

As preferably, described treater is cortex-m4 treater.

Beneficial effect: compared with traditional cab signal acquisition system, the utility model has the following advantages:

1, the utility model is based on OBD interface, all driving is examined required signal and is all obtained by ALCL Assembly Line Communication Link, makes whole system height integrated, reduce the volume of whole system equipment;

2, broken away from the old mode of driving and examining car and needing to tear open the car number of winning the confidence, improve the stability of equipment, reduce loaded down with trivial details electric wire and connect, Installation and Debugging maintenance is all very convenient;

3, by CAN being isolated bus and K bus is integrated into ALCL Assembly Line Communication Link, the vehicle of different style can be adapted to, produce a kind of cab signal collecting device without the need to often kind of vehicle, reduce cost.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of embodiment of the present utility model.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention is further described.

Embodiment: the structural representation being illustrated in figure 1 a kind of embodiment of the present utility model, the present embodiment comprises: treater, diagnostics port bus, power module, ultrasonic wave module and communication bus; Power module is that modules is powered; The object or person person of ultrasonic wave module measuring vehicle both sides and the distance of vehicle, and by the distance signal transmission that collects to treater; Diagnostics port bus gathers cab signal, and by OBD interface, cab signal is transferred to treater; The cab signal received and range signal are transferred to outside vehicle-mounted computer by communication bus by treater.Wherein, diagnostics port bus isolates bus by CAN and K bus forms, and CAN isolates bus and is connected with treater respectively by OBD interface with K bus; Communication bus is RS485 bus, and the mouth of RS485 bus is connected with outside vehicle-mounted computer, gives outside vehicle-mounted computer by the cab signal that collects and distance signal transmission, examines examination system provide judge signal for driving; Power module built-in over-voltage and over-current short-circuit protection unit, supports the input of 6 ~ 36V voltage; Treater adopts cortex-m4 to be treater.

Work as device power, when entering mode of operation, the workflow of the cab signal acquisition system based on OBD interface that the utility model provides is:

The object or person person of ultrasonic wave module measuring vehicle both sides and the distance of vehicle, and by the distance signal transmission that collects to treater; Can be used for the position relationship of interpretation student and vehicle.

Diagnostics port bus is gathered cab signal by the sensor be arranged on each controller of car body and is sent cab signal to treater by OBD interface, and cab signal comprises: speed-slackening signal, door and window actuation signal and ignition signal;

The cab signal that collects and range signal are given outside vehicle-mounted computer by RS485 bus transfer by treater, according to the signal received, outside vehicle-mounted computer judges that vehicle periphery has clear and student and vehicle oneself state.

The cab signal acquisition system based on OBD interface that the present embodiment proposes can complete the entirety collection to desired signal in 200ms.

In addition, the present embodiment adopts cortex-m4 to be treater, the various signals driven needed for examination are obtained by the diagnostics port bus of automobile, make whole system height integrated, reduce the volume of whole system equipment, avoid the destruction for vehicle body, break away from massive image, improve the overall image of equipment, improve the class of product; The cable decreasing equipment room connects, and improve stability and reliability and the safety of equipment, the design iterations of simplifying reduces equipment cost.

The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. based on a cab signal acquisition system for OBD interface, it is characterized in that, comprising: treater, diagnostics port bus, power module, ultrasonic wave module and communication bus; Power module is that modules is powered; The object or person person of ultrasonic wave module measuring vehicle both sides and the distance of vehicle, and by the distance signal transmission that collects to treater; Diagnostics port bus gathers cab signal, and by OBD interface, cab signal is transferred to treater; The cab signal received and range signal are transferred to outside vehicle-mounted computer by communication bus by treater.

2. a kind of cab signal acquisition system based on OBD interface according to claim 1, is characterized in that, described diagnostics port bus comprises CAN and isolates bus and/or K bus, and CAN isolates bus and is connected with treater respectively with K bus.

3. a kind of cab signal acquisition system based on OBD interface according to claim 1 and 2, it is characterized in that, described communication bus can be: CAN or TCP bus or RS485 bus or RS422 bus or wireless bus.

4. a kind of cab signal acquisition system based on OBD interface according to claim 1 and 2, is characterized in that, described power module built-in over-voltage and over-current short-circuit protection unit, supports the input of 6 ~ 36V voltage.

5. a kind of cab signal acquisition system based on OBD interface according to claim 1 and 2, it is characterized in that, described treater is cortex-m4 treater.