CN211506256U

CN211506256U - Automobile maintenance system based on CAN bus

Info

Publication number: CN211506256U
Application number: CN202020134158.9U
Authority: CN
Inventors: 王占广
Original assignee: Taizhou Auto Repair Cool Network Technology Co ltd
Current assignee: Taizhou Auto Repair Cool Network Technology Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-09-15
Anticipated expiration: 2030-01-20

Abstract

The utility model relates to an automobile overhaul system, and discloses an automobile overhaul system based on a CAN bus, which comprises an instrument control device, an automobile body control device, an engine control device, a mobile terminal device and a CAN overhaul device; the input end of the CAN overhauling device is connected with the instrument control device, the vehicle body control device and the engine control device through a CAN bus and receives data signals, and the CAN overhauling device processes the received data signals. The CAN maintenance device comprises a central processing module, the central processing module is connected with a display module and sends a display control signal to the display module, the display module displays different working states according to the received display control signal and CAN monitor automobile data in real time, and the central processing module is connected with a storage module and sends the signal to the storage module; the storage module remotely upgrades the stored information through the mobile terminal device, and the safety of the automobile data is effectively maintained.

Description

Automobile maintenance system based on CAN bus

Technical Field

The utility model relates to an automobile overhaul system has especially related to based on CAN bus automobile overhaul system.

Background

With the increasing of electronic devices of automobiles, automobile control systems are more and more complex, and detection of automobiles needs to be performed by adopting professional detection instruments. The traditional fault diagnosis instrument needs an independent diagnosis instrument body, can not well acquire signals of various control devices of an automobile body, and can not monitor the safety of automobile data in real time.

For example, the patent names: an automobile maintenance diagnostic instrument, application number: CN201720641968.1, application date: 2017.06.05 the utility model discloses an in the patent application, the utility model discloses an automobile overhaul diagnostic device, including the diagnostic device body, the diagnostic device body is connected with the safety cover through the pivot, the inboard edge of safety cover is provided with the rubber gasket, the one end of diagnostic device body is provided with the radio, the top of diagnostic device body is provided with the electricity storage box, be provided with solar cell panel on the electricity storage box body, solar cell panel links to each other with the electricity storage box electrical property, one side of diagnostic device body is provided with the megaphone, the back side edge of diagnostic device body is provided with the magnetic stripe, the dorsal part of diagnostic device body is provided with the casing, and one side of casing is provided with the radiator, be provided with temperature controller in the casing, temperature controller links to each other with the radiator electrical property, the bottom of diagnostic device body is provided with anti-skid pad piece.

Although the automobile overhaul diagnostic instrument designed by the prior art has various functions and simple operation, the various requirements of the diagnostic instrument in the using process are met, but the automobile overhaul diagnostic instrument in the prior art has the defects of incapability of monitoring automobile data in real time, poor reliability and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it CAN not real time monitoring car data to solve, the poor shortcoming of reliability provides based on CAN bus automobile inspection system.

In order to solve the above problem, the utility model provides a following technical scheme:

the automobile maintenance system based on the CAN bus comprises an instrument control device, an automobile body control device, an engine control device, a mobile terminal device and a CAN maintenance device;

the input end of the CAN overhauling device is connected with the instrument control device, the vehicle body control device and the engine control device through a CAN bus, and receives data signals of the instrument control device, the vehicle body control device and the engine control device, and the CAN overhauling device processes the received signals;

the output end of the CAN maintenance device is connected with the mobile terminal device through a CAN bus and transmits the processed signal to the mobile terminal device.

Preferably, the CAN maintenance device comprises a power supply control module, a first CAN switching module, a second CAN switching module, a display module, a storage module and a central processing module;

the power supply control module is electrically connected with the central processing module and provides power supply for the central processing module;

the first CAN switching module is electrically connected with the central processing module, receives signals of the instrument control device, the vehicle body control device and the engine control device and transmits the signals to the central processing module;

the second CAN switching module is electrically connected with the central processing module, the central processing module transmits the processed signals to the second CAN switching module, and the second CAN switching module is connected with the mobile terminal device and transmits the signals to the mobile terminal device;

the central processing module is connected with the storage module and transmits the signal to the storage module; the central processing module is connected with the display module and is used for sending the display control signal to the display module, and the display module is used for displaying different working states according to the received display control signal.

The CAN bus is adopted for connection, so that the device is high in practicability, good in safety, simple to operate and suitable for various vehicle types.

Preferably, the display module includes three LED display lamps LED1, LED2, and LED 3; when the LED1 is on, the first CAN switching module works, otherwise, the first CAN switching module does not work; when the LED2 is on, the second CAN switching module works, otherwise, the second CAN switching module does not work; when the LED3 lamp is on, the memory module reads and writes normally, otherwise the memory module can not read and write normally. Through the LED display lamp, the working states of the first CAN switching module, the second CAN switching module and the storage module CAN be monitored in real time.

Preferably, the second CAN switching module is connected with the mobile terminal device through an OBD interface.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: because the CAN bus connection is adopted, the display state of the display module is controlled through the central control module, so that the automobile data is monitored in real time; the storage equipment remotely updates the information stored in the automobile through the mobile terminal device, so that the safety of the automobile data is effectively maintained. Utilize simultaneously the utility model discloses an automobile overhaul system, it overhauls conveniently, and the installation cost is low, and artifical the maintenance is consuming time few.

Drawings

Fig. 1 is an overall design diagram of embodiment 1 of the present invention.

Fig. 2 is the utility model discloses CAN overhauls device and constitutes the picture.

Fig. 3 is a circuit diagram of the second CAN switching module and the first CAN switching module of the present invention.

Fig. 4 is a circuit diagram of the central processing module of the present invention.

Fig. 5 is a circuit diagram of the power control module of the present invention.

The names of the parts indicated by the numerical references in the above figures are as follows: 1-instrument control device, 2-vehicle body control device, 3-engine control device, 4-CAN maintenance device, 41-power control module, 42-first CAN switching module, 43-central processing module, 44-second CAN switching module, 45-display module, 46-storage module.

Detailed Description

Example 1

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

An automobile maintenance system based on a CAN bus is shown in figure 1 and comprises an instrument control device 1, a vehicle body control device 2, an engine control device 3, a mobile terminal device 5 and a CAN maintenance device 4;

the input end of the CAN overhauling device 4 is connected with the instrument control device 1, the vehicle body control device 2 and the engine control device 3 through a CAN bus, and receives data signals of the instrument control device 1, the vehicle body control device 2 and the engine control device 3, and the CAN overhauling device 4 processes the received signals;

the output end of the CAN maintenance device 4 is connected with the mobile terminal device 5 through a CAN bus, and transmits the processed signal to the mobile terminal device 5.

Referring to fig. 2, the CAN maintenance apparatus 4 includes a power control module 41, a first CAN switching module 42, a second CAN switching module 44, a display module 45, a storage module 46, and a central processing module 43, wherein the power control module 41 is electrically connected to the central processing module 43 and provides power to the central processing module 43;

the first CAN switching module 42 is electrically connected with the central processing module 43, and the first CAN switching module 42 receives signals of the instrument control device 1, the vehicle body control device 2 and the engine control device 3 and transmits the signals to the central processing module 43; the second CAN switching module 44 is electrically connected with the central processing module 43, the central processing module 43 transmits the processed signal to the second CAN switching module 44, and the second CAN switching module 44 is connected with the mobile terminal device 5 and transmits the signal to the mobile terminal device 5; the central processing module 43 is connected with the storage module 46 and transmits the signal to the storage module 46; the central processing module 43 is connected to the display module 45, and sends the display control signal to the display module 45, and the display module 45 displays different working states according to the received display control signal.

The central processing module 43 is connected to a USB interface, reads the VIN data code through the USB interface, and writes the read VIN data code into the mobile terminal device 5, so as to ensure that the VIN data code read by the mobile terminal device 5 and the USB interface is consistent.

The power control module 41 adopts chips with HT7550 and HT7553, the HT7550 provides 5V power, and provides power for the first CAN switching module 42 and the second CAN switching module 44; HT7553 supplies 3.3V power to the display module 45, the memory module 46, and the central processing module 43.

The second CAN switching module 44 is connected to the mobile terminal 5 via an OBD.

Example 2

On the basis of embodiment 1, the main chip adopted by the central processing module 43 is STM32F105R8T 6; the first and second CAN switching modules employ a TJA1040T high performance CAN transceiver that automatically adjusts slope through EMC. Referring to fig. 3, the first and second CAN switch modules are connected to a Header8 plug and connected to the CAN bus via a Header8 plug.

Example 3

On the basis of embodiment 1, the display module 45 includes three LED display lamps LED1, LED2, and LED3, and when the LED1 is on, the first CAN switching module 42 works, otherwise it does not work; when the LED2 is on, the second CAN switch module 44 is on, otherwise it is not on; when the LED3 is on, the memory module 46 reads and writes normally, otherwise the memory module 46 cannot read and write normally.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The automobile maintenance system based on the CAN bus comprises an instrument control device (1), an automobile body control device (2), an engine control device (3) and a mobile terminal device (5); the method is characterized in that: the vehicle body maintenance system is characterized by further comprising a CAN maintenance device (4), wherein the input end of the CAN maintenance device (4) is connected with the instrument control device (1), the vehicle body control device (2) and the engine control device (3) through a CAN bus and receives data signals of the instrument control device (1), the vehicle body control device (2) and the engine control device (3), and the CAN maintenance device (4) processes the received signals;

the output end of the CAN overhauling device (4) is connected with the mobile terminal device (5) through a CAN bus, and the processed signal is transmitted to the mobile terminal device (5).

2. The CAN bus based automotive service system of claim 1, wherein: the CAN maintenance device (4) comprises a power supply control module (41), a first CAN switching module (42), a second CAN switching module (44), a display module (45), a storage module (46) and a central processing module (43);

the power supply control module (41) is electrically connected with the central processing module (43) and provides power supply for the central processing module (43);

the first CAN switching module (42) is electrically connected with the central processing module (43), and the first CAN switching module (42) receives signals of the instrument control device (1), the vehicle body control device (2) and the engine control device (3) and transmits the received signals to the central processing module (43);

the second CAN switching module (44) is electrically connected with the central processing module (43), the central processing module (43) transmits the processed signals to the second CAN switching module (44), and the second CAN switching module (44) is connected with the mobile terminal device (5) and transmits the signals to the mobile terminal device (5);

the central processing module (43) is connected with the storage module (46) and transmits the signal to the storage module (46); the central processing module (43) is connected with the display module (45) and is used for sending display control signals to the display module (45), and the display module (45) displays different working states according to the received display control signals.

3. The CAN bus based automotive service system of claim 1, wherein: the display module (45) comprises three LED display lamps LED1, LED2 and LED3, and the LED1, the LED2 and the LED3 respectively display the working states of the first CAN switching module (42), the second CAN switching module (44) and the storage module (46).

4. The CAN bus based automotive service system of claim 1, wherein: and the second CAN switching module (44) is connected with the mobile terminal device (5) through an OBD interface.