CN110320896A - The command sending method of vehicle diagnostic equipment - Google Patents
The command sending method of vehicle diagnostic equipment Download PDFInfo
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- CN110320896A CN110320896A CN201910734790.9A CN201910734790A CN110320896A CN 110320896 A CN110320896 A CN 110320896A CN 201910734790 A CN201910734790 A CN 201910734790A CN 110320896 A CN110320896 A CN 110320896A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
A kind of command sending method of vehicle diagnostic equipment, include: that computer is connected into Two Channels CAN Bus analyzer, the Two Channels CAN Bus analyzer is connected into vehicle diagnostics mouth, passes through the CAN_FLASH file of the corresponding order of ECANTolls software development on the computer；CAN_FLASH file is uploaded to Cloud Server；When sending order to vehicle, the order that diagnostic device is selected according to user obtains corresponding frame ID, meanwhile, corresponding CAN_FLASH file is downloaded from the Cloud Server according to the order of user's selection；The data in the CAN_FLASH file are read, CAN protocol is based on, and according to the frame ID, frame data are found from data, and then find the valid data in frame data；The valid data are sent to vehicle diagnostics mouth by the frame ID by the diagnostic device.The present invention is simple, efficient, can widely be used in automobile diagnosis technique field.
Description
Technical field
The present invention relates to vehicle diagnostic equipment technical field more particularly to a kind of order senders of vehicle diagnostic equipment
Method.
Background technique
Currently, when vehicle diagnostic equipment sends to vehicle and orders, it usually needs obtain data from HEX file.HEX text
Part is a kind of hexadecimal text file, itself contains a large amount of data.Such as ECU chip is write with a brush dipped in Chinese ink with HEX formatted file,
It first has to parse every segment data, then every segment data is burnt at the corresponding position of ECU chip to the data sectional in HEX file.
By taking HEX file data shown in Fig. 2 as an example, wherein the address of first character section 30 is 8,000 0000 (referring to black
Color box), the address of last bit byte 03 (referring to black box) is 8000 02EF, it is necessary first to be divided the data into according to address
Several segments, parse every segment data, then replace these data originally in the position of ECU chip, such mode trouble, efficiency
It is low.
Summary of the invention
Based on this, in view of the above technical problems, a kind of command sending method of vehicle diagnostic equipment is provided.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of command sending method of vehicle diagnostic equipment, comprising:
Computer is connected into Two Channels CAN Bus analyzer, the Two Channels CAN Bus analyzer is connected into vehicle diagnostics
Mouthful, pass through the CAN_FLASH file of the corresponding order of ECANTolls software development on the computer；
CAN_FLASH file is uploaded to Cloud Server；
When sending order to vehicle, the order that diagnostic device is selected according to user obtains corresponding frame ID, meanwhile, according to
The order of user's selection downloads corresponding CAN_FLASH file from the Cloud Server；
The data in the CAN_FLASH file are read, CAN protocol is based on, and according to the frame ID, are found from data
Frame data, and then find the valid data in frame data；
The valid data are sent to vehicle diagnostics mouth by the frame ID by the diagnostic device.
The diagnostic device provides the command selection interface for selecting for user.
There is order and the corresponding table of frame ID in the database of the diagnostic device.
The present invention uses CAN_FLASH file when sending order, compares traditional approach, eliminates the place to data sectional
Reason, because CAN_FLASH File has inherently divided the data of section, it is only necessary to the number in CAN_FLASH file
According to parsing, this method is simpler, more efficiently, and basic 90% or more automobile electric control system is to use
CAN protocol communication, therefore, CAN_FLASH formatted file can widely be used in automobile diagnosis technique field.
Detailed description of the invention
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments:
Fig. 1 is the schematic diagram data in CAN_FLASH file of the invention；
Fig. 2 is the schematic diagram data of HEX file.
Specific embodiment
A kind of command sending method of vehicle diagnostic equipment, comprising:
One, computer connected into Two Channels CAN Bus analyzer, examine Two Channels CAN Bus analyzer connection vehicle
Fracture passes through the CAN_FLASH file (file of .CAN format) of the corresponding order of ECANTolls software development on computer.
CAN_FLASH documenting process is as follows:
1, ECANTolls software is opened, into setup parameter interface: selecting device type (such as USBCAN-V5)；Point impact
It opens up standby；It selects operating mode (such as normal mode)；Selection and the consistent baud rate of vehicle ECU；Point determines.Production is corresponding different
The CAN_FLASH file of order only need to set corresponding parameter, and details are not described herein again.
2, enter software after setting parameter, the sys lamp of CAN bus analyzer can enter flashing state at this time, with vehicle
ECU communication carries out log message data, at this point, the CAN lamp that CAN bus analyzer receives the respective channel of message can dodge
It is bright.
3, it after the completion of recording, clicks the interface upper left corner and saves data, select autoexec, desired CAN_ can be obtained
FLASH file.
Two, CAN_FLASH file is uploaded to Cloud Server.
Three, it is sent to vehicle when ordering (diagnostic device is connect with vehicle diagnostics mouth), diagnostic device is selected according to user
Order, obtains corresponding frame ID, meanwhile, corresponding CAN_FLASH file is downloaded from Cloud Server according to the order of user's selection.
Wherein, mentioned order includes that ECU writes with a brush dipped in Chinese ink function, time data stream, Read fault code, clear error code, reading version information etc..
Diagnostic device provides command selection interface for selecting for user, have in the database of diagnostic device order with
The correspondence table of frame ID, user have selected that corresponding frame ID can be found after order.
Four, the data in CAN_FLASH file are read, CAN protocol is based on, and according to above-mentioned frame ID, are found from data
Frame data, and then find the valid data in frame data.
The present invention uses CAN_FLASH file when sending order, compares traditional approach, eliminates the place to data sectional
Reason, because CAN_FLASH File has inherently divided the data of section, it is only necessary to the number in CAN_FLASH file
According to parsing, this method is simpler, more efficiently, and basic 90% or more automobile electric control system is to use
CAN protocol communication, therefore, can widely be used in automobile diagnosis technique field.
In order to make it easy to understand, opening the data content after CAN_FLASH file by file editor referring to Fig. 1.
According to CAN protocol, every every data of a line are defined as follows (from left to right) in Fig. 1:
1) first: frame time interval；
2) second: standard frame 0 extends frame 1；
3) third position: data frame 0, remote frame 1；
4) the 4th: frame ID；
4) the 5th: frame data.
As a result, by matching frame ID, we can find frame data, and then pass through the definition in CAN protocol to frame data.
By taking Fig. 1 as an example, in the first row, 03 be effective byte length, i.e., 3, followed by order 22 F1 94.?
In two rows, 10 represent multiframe, and 0E represents effective byte length, i.e., 14, therefore valid data can be in second, the 4th, fifth line
In find, 62 F1 94 32 37 35 in the second row, in 37 37 30 33 35 30 32 and fifth line in fourth line
30, amount to 14.(fourth line primary 21 and fifth line first 22 are considered as label, serial number, without practical meaning
Justice).
Five, valid data are sent to vehicle diagnostics mouth by above-mentioned frame ID by diagnostic device.
It is exemplified below:
1, in diagnosis, user has selected ECU flash command on diagnostic device, and corresponding frame ID is 18DAF100, together
When, diagnostic device writes with a brush dipped in Chinese ink the corresponding CAN_FLASH file of function from Cloud Server downloading ECU.
2, the data in CAN_FLASH file are read, data match 18DAF100 referring to Fig. 1, the 2nd, 4,5,
7, the frame data that corresponding 18DAF100 is found in 9,10 rows, in the frame data (10 0E, 62 F1 94 32 37 35) of the 2nd row
In, first 10 represents multiframe, and second 0E represents effective byte length, i.e., 14, then takes 14 to be had since 62
Imitate data:
62 F1 94 32 37 35 37 37 30 33 35 30 32 30。
3, diagnostic device passes through above-mentioned frame ID (18DAF100) for valid data (62 F1 94 32 37 35 37 37 30
30) 33 35 30 32 are sent to vehicle diagnostics mouth, vehicle identification frame ID learns that receiving is ECU flash command, and then will
62 F1 94 32 37 35 37 37 30 33 35 30 32 30 replacement corresponding position in ECU chip.
But those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate this
Invention, and be not used as limitation of the invention, as long as in spirit of the invention, to embodiment described above
Variation, modification will all fall within the scope of claims of the present invention.
Claims (3)
1. a kind of command sending method of vehicle diagnostic equipment characterized by comprising
Computer is connected into Two Channels CAN Bus analyzer, the Two Channels CAN Bus analyzer is connected into vehicle diagnostics mouth, is led to
Cross the CAN_FLASH file of the corresponding order of ECANTolls software development on the computer；
CAN_FLASH file is uploaded to Cloud Server；
When sending order to vehicle, the order that diagnostic device is selected according to user obtains corresponding frame ID, meanwhile, according to user
The order of selection downloads corresponding CAN_FLASH file from the Cloud Server；
The data in the CAN_FLASH file are read, CAN protocol is based on, and according to the frame ID, frame number is found from data
According to, and then find the valid data in frame data；
The valid data are sent to vehicle diagnostics mouth by the frame ID by the diagnostic device.
2. a kind of command sending method of vehicle diagnostic equipment according to claim 1, which is characterized in that the diagnosis is set
The standby command selection interface provided for being selected for user.
3. a kind of command sending method of vehicle diagnostic equipment according to claim 1 or 2, which is characterized in that described to examine
There is order and the corresponding table of frame ID in the database of disconnected equipment.
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| CN201910734790.9A CN110320896A (en) | 2019-08-09 | 2019-08-09 | The command sending method of vehicle diagnostic equipment |
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| CN201910734790.9A CN110320896A (en) | 2019-08-09 | 2019-08-09 | The command sending method of vehicle diagnostic equipment |
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Application publication date: 20191011 |