CN108632120A - Intelligent test device based on vehicle-mounted CAN network and test method - Google Patents
Intelligent test device based on vehicle-mounted CAN network and test method Download PDFInfo
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- CN108632120A CN108632120A CN201810374696.2A CN201810374696A CN108632120A CN 108632120 A CN108632120 A CN 108632120A CN 201810374696 A CN201810374696 A CN 201810374696A CN 108632120 A CN108632120 A CN 108632120A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40013—Details regarding a bus controller
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Power Engineering (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The intelligent test device based on vehicle-mounted CAN network designed by the present invention, its CAN communication module, I/O modules, the first communication ends of serial communication modular are communicated to connect with mainboard, and digital signal communication end and the mainboard of analog-to-digital conversion module communicate to connect.The intelligent test device of the present invention uses modularized design, each functions of modules is independent, do not have to dismounting single machine when carrying out functional test to each single machine in vehicle-mounted CAN network, CAN bus, power supply and each signal cable need to only be drawn, improves device to test convenience and versatility；The intelligent test device integrated level of the present invention is high, degree of intelligence is high, reliability is high, real-time is high, efficient, each node single machine can automatically be tested by CAN bus, and instruction execution result can be tested by the slowdown monitoring circuit that returns of design, it does not need other ancillary equipments to be tested, greatly facilitates test job.
Description
Technical field
The present invention relates to intelligent measuring technology fields, and vehicle-mounted CAN (Controller Area are based in particular to one kind
Network, controller local area network) network intelligent test device and test method.
Technical background
Currently, CAN bus is widely used general in mobile unit, its reliability is higher, strong antijamming capability.It uses
After the mobile unit entrucking of CAN bus, limited by interior space, test signal interface is limited, each single machine functional test difficulty
Greatly, each used the mobile unit of CAN bus that a corresponding subtest equipment is required for be tested, demand auxiliary
The number of species of test equipment are more, improve the testing cost of mobile unit, reduce the testing efficiency of mobile unit.
Invention content
It, should present invention aim to provide a kind of intelligent test device and test method based on vehicle-mounted CAN network
The integrated level of device and method is high, degree of intelligence is high, versatile, reliability is high, test real-time is high, testing efficiency is high.
In order to achieve this, the intelligent test device based on vehicle-mounted CAN network designed by the present invention, which is characterized in that
It includes mainboard, CAN communication module, I/O (Input/Output input/output) module, analog-to-digital conversion module, serial communication mould
Block and programmable power supply, wherein the CAN communication module, I/O modules, the first communication ends of serial communication modular are logical with mainboard
Letter connection, digital signal communication end and the mainboard of analog-to-digital conversion module communicate to connect；
Second communication ends of CAN communication module are used to be separately connected Vehicle Controller to be measured by CAN communication cable and wait for
Measuring car carries the CAN communication interface of installation electromagnetical valve control, and the second communication ends of I/O modules are used for through I/O communication cables point
The I/O communication interfaces of Vehicle Controller to be measured and mobile unit solenoid valve controller to be measured, the mould of analog-to-digital conversion module are not connected
Quasi- signal communication end is used to be separately connected Vehicle Controller to be measured and mobile unit electromagnetism to be measured by analog signal communication cable
The analog signal communication ends of valve control, the control terminal of the second communication ends connection programmable power supply of serial communication modular, program-controlled electric
The feeder ear in source is used to be separately connected Vehicle Controller to be measured and mobile unit solenoid valve controller to be measured by service cable
Power supply interface.
A kind of mobile unit intelligent test method according to above-mentioned apparatus, which is characterized in that it includes the following steps：
Step 1：Mainboard sends out power data by serial communication modular and instructs to programmable power supply, and programmable power supply exports electric energy
To Vehicle Controller to be measured and mobile unit solenoid valve controller to be measured, Vehicle Controller to be measured and mobile unit solenoid valve to be measured
Controller powers on and self-operating；
Step 2：Mainboard is waited for measuring car according to mobile unit communications protocol control CAN communication module by CAN communication cable
The CAN communication interface of set controller sends CAN communication and inquires data command, is waited for if mainboard can be received by CAN communication module
The feedback data frame that measuring car set controller requires to execute according to mobile unit communications protocol illustrates that Vehicle Controller CAN to be measured is logical
Communication function is normal, otherwise judges CAN communication exception；
Step 3：Mainboard controls I/O modules and export high level digital output modul signal to waiting for measuring car by I/O communication cables
Then set controller controls CAN communication module by CAN communication cable to vehicle-mounted control to be measured according to mobile unit communications protocol
Device sends input state CAN and inquires data command, and the input state CAN data that mainboard receives Vehicle Controller feedback to be measured disappear
It ceases and is parsed, obtain the On-off signal status signal of Vehicle Controller to be measured, if On-off signal status signal is all
Height then judges that input function is normal, otherwise judges input function exception.
Step 4：Mainboard is waited for measuring car according to mobile unit communications protocol control CAN communication module by CAN communication cable
Set controller sends switching value output signal control instruction, then logical according to mobile unit communications protocol control analog-to-digital conversion module
It crosses analog signal communication cable and exports Vehicle Controller analog quantity signal of communication to be measured, Vehicle Controller to be measured is according to be measured vehicle-mounted
Controller analog quantity signal of communication is executed, and to analog-to-digital conversion module feedback analog signal, if analog-to-digital conversion module receives
Feedback analog signal within the scope of preset voltage value, then judge that Vehicle Controller analog output function to be measured is normal, otherwise
Judge abnormal；
Step 5：Mainboard is waited for measuring car according to mobile unit communications protocol control CAN communication module by CAN communication cable
Set controller sends mobile unit hydraulic system analog quantity inquiry instruction, and Vehicle Controller to be measured is according to mobile unit hydraulic system
Analog quantity inquiry instruction feeds back mobile unit hydraulic system pressure Value Data by CAN communication module to mainboard, if mobile unit
Hydraulic system pressure Value Data then judges that mobile unit hydraulic system function is normal in values, otherwise judges abnormal.
Beneficial effects of the present invention:
The intelligent test device of the present invention uses modularized design, and each functions of modules is independent, to each list in vehicle-mounted CAN network
Machine carries out not having to dismounting single machine when functional test, need to only draw CAN bus, power supply and each signal cable, improve device
Test convenience and versatility；Intelligent test device integrated level of the invention is high, degree of intelligence is high, reliability is high, real-time is high,
It is efficient, each node single machine can automatically be tested by CAN bus, and can be held by the slowdown monitoring circuit test instruction of returning of design
Row greatly facilitates test job result it is not necessary to other ancillary equipments are tested, and improves testing efficiency.
The present invention can solve that existing vehicle-mounted CAN bus network interior joint equipment fault positioning is difficult, difficulty of test is big, demand is surveyed
The examination problem that equipment is various, efficiency is low.The present invention is suitable for the intelligence test of mobile unit, has preferable application value and pushes away
Wide foreground.
Description of the drawings
Fig. 1 is the use state diagram of structure of the invention part；
In figure, 1-cpci bus bottom plate, 2-mainboards, 3-CAN communication module, 3.1-CAN communication cables, 4-I/O moulds
Block, 4.1-I/O communication cables, 5-analog-to-digital conversion modules, 5.1-analog signal communication cables, 6-serial communication modulars, 7-
Programmable power supply, 7.1-service cables, 8-Vehicle Controllers to be measured, 9-mobile unit solenoid valve controllers to be measured.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
Intelligent test device based on vehicle-mounted CAN network as shown in Figure 1, as shown in Figure 1, it includes mainboard 2, CAN logical
Believe module 3, I/O modules 4, analog-to-digital conversion module 5, serial communication modular 6 and programmable power supply 7, wherein the CAN communication module
3, I/O modules 4, the first communication ends of serial communication modular 6 are communicated to connect with mainboard 2, the digital signal of analog-to-digital conversion module 5
Communication ends are communicated to connect with mainboard 2；
Second communication ends of CAN communication module 3 are used to be separately connected Vehicle Controller 8 to be measured by CAN communication cable 3.1
With the CAN communication interface of mobile unit solenoid valve controller 9 to be measured, the second communication ends of I/O modules 4 are used to communicate by I/O
Cable 4.1 is separately connected the I/O communication interfaces of Vehicle Controller 8 to be measured and mobile unit solenoid valve controller 9 to be measured, and modulus turns
The analog signal communication ends of mold changing block 5 are used to be separately connected Vehicle Controller 8 to be measured by analog signal communication cable 5.1 and wait for
Measuring car carries the analog signal communication ends of installation electromagnetical valve control 9, and the second communication ends of serial communication modular 6 connect programmable power supply
7 control terminal, the feeder ear of programmable power supply 7 are used to be separately connected Vehicle Controller 8 to be measured by service cable 7.1 and wait for measuring car
Carry the power supply interface of installation electromagnetical valve control 9.
In above-mentioned technical proposal, it further includes CPCI (Compact Peripheral Component
Interconnect) bus mother board 1, the CAN communication module 3, I/O modules 4, the first communication ends of serial communication modular 6 are equal
It is communicated to connect by cpci bus bottom plate 1 and mainboard 2, the digital signal communication end of analog-to-digital conversion module 5 passes through cpci bus bottom
Plate 1 is communicated to connect with mainboard 2.
In above-mentioned technical proposal, the programmable power supply 7 by 380V power supply power supplies, the cpci bus bottom plate 1, mainboard 2,
CAN communication module 3, I/O modules 4, analog-to-digital conversion module 5 and serial communication modular 6 are by 220V power supply power supplies.
In above-mentioned technical proposal, the mainboard 2 for sending control instruction to Vehicle Controller 8 to be measured and waiting for measuring car respectively
Installation electromagnetical valve control 9 is carried, and receives Vehicle Controller 8 to be measured and mobile unit solenoid valve controller to be measured 9 according to instruction
The feedback result of relevant action is executed, interpretation analysis is carried out, measuring car set controller 8 and mobile unit solenoid valve to be measured are treated in completion
The test that the CAN communication communication of controller 9, input/output communication, analog parameter communicate, and real-time storage test data.
In above-mentioned technical proposal, the mainboard 2 is additionally operable to control programmable power supply 7 by serial communication modular 6, with
The power supply of full Vehicle Controller 8 to be measured and mobile unit solenoid valve controller 9 to be measured needs.
In above-mentioned technical proposal, the CAN communication module 3 is used to wait for measuring car according to agreement output CAN inquiry instructions inquiry
The CAN communication status data information of set controller 8 and mobile unit solenoid valve controller 9 to be measured；According to agreement output CAN instructions
It controls Vehicle Controller 8 to be measured and mobile unit solenoid valve controller 9 to be measured executes corresponding operation, to meet CAN communication work(
It can test needs.
In above-mentioned technical proposal, the I/O modules 4 are for treating measuring car set controller 8 and mobile unit solenoid valve to be measured
The input/output function of controller 9 is tested, and I/O modules 4 export switching value to Vehicle Controller 8 to be measured and to be measured vehicle-mounted set
Standby solenoid valve controller 9, and require test Vehicle Controller 8 to be measured and mobile unit solenoid valve control to be measured according to related protocol
Whether the input/output function of device 9 is normal.
A kind of mobile unit intelligent test method according to above-mentioned apparatus, it includes the following steps：
Step 1：The power data that mainboard 2 sends out 28V by serial communication modular 6 is instructed to programmable power supply 7, programmable power supply
7 export electric energy to Vehicle Controller 8 to be measured and mobile unit solenoid valve controller 9 to be measured, Vehicle Controller to be measured 8 and wait for measuring car
It carries installation electromagnetical valve control 9 and powers on simultaneously self-operating；
Step 2：Mainboard 2 is waited for according to mobile unit communications protocol control CAN communication module 3 by CAN communication cable 3.1
The CAN communication interface of measuring car set controller 8 sends CAN communication and inquires data command, if mainboard 2 can be connect by CAN communication module 3
By the feedback data frame that Vehicle Controller 8 to be measured requires to execute according to mobile unit communications protocol, illustrate vehicle-mounted control to be measured
Device 8CAN communication functions are normal, otherwise judge CAN communication exception；
Step 3：Mainboard 2 controls I/O modules 4 and export high level digital output modul signal to waiting for by I/O communication cables 4.1
Then measuring car set controller 8 is waited for according to mobile unit communications protocol control CAN communication module 3 by CAN communication cable 3.1
Measuring car set controller 8 sends input state CAN and inquires data command, and mainboard 2 receives the input that Vehicle Controller 8 to be measured is fed back
State CAN data-messages are simultaneously parsed, and the On-off signal status signal of Vehicle Controller 8 to be measured are obtained, if switching value is defeated
It is high to enter status signal all, then judges that input function is normal, and otherwise (there are one be low) judges input function exception.
Step 4：Mainboard 2 is waited for according to mobile unit communications protocol control CAN communication module 3 by CAN communication cable 3.1
Measuring car set controller 8 sends switching value (28V level signals) output signal control instruction, then according to mobile unit communications protocol
Control analog-to-digital conversion module 5 exports Vehicle Controller analog quantity signal of communication to be measured by analog signal communication cable 5.1, to be measured
Vehicle Controller 8 is executed according to Vehicle Controller analog quantity signal of communication to be measured, and to 5 feedback analog of analog-to-digital conversion module
Signal, if the feedback analog signal that analog-to-digital conversion module 5 receives, within the scope of preset voltage value (0 ± 0.2MPa), judgement waits for
8 analog output function of measuring car set controller is normal, otherwise judges abnormal；
Step 5：Mainboard 2 is waited for according to mobile unit communications protocol control CAN communication module 3 by CAN communication cable 3.1
Measuring car set controller 8 sends mobile unit hydraulic system analog quantity inquiry instruction, and Vehicle Controller 8 to be measured is according to mobile unit liquid
Pressure system analog quantity inquiry instruction feeds back mobile unit hydraulic system pressure Value Data by CAN communication module 3 to mainboard 2, if
Mobile unit hydraulic system pressure Value Data then judges mobile unit hydraulic system work(in values (0 ± 0.2MPa)
Normally can otherwise it judge abnormal.
Step 6：Mainboard 2 is waited for according to mobile unit communications protocol control CAN communication module 3 by CAN communication cable 3.1
The CAN communication interface that measuring car carries installation electromagnetical valve control 9 sends CAN communication inquiry data command, if mainboard 2 can pass through CAN
Communication module 3 receives the feedback coefficient that mobile unit solenoid valve controller 9 to be measured requires to execute according to mobile unit communications protocol
According to frame, illustrate that the CAN communication function of mobile unit solenoid valve controller 9 to be measured is normal, otherwise judges CAN communication exception；
Step 7：Mainboard 2 controls I/O modules 4 and export high level digital output modul signal to waiting for by I/O communication cables 4.1
Measuring car carries installation electromagnetical valve control 9, and then controlling CAN communication module 3 according to mobile unit communications protocol passes through CAN communication electricity
Cable 3.1 sends input state CAN to mobile unit solenoid valve controller 9 to be measured and inquires data command, and mainboard 2, which receives, waits for measuring car
It carries the input state CAN data-messages of 9 feedback of installation electromagnetical valve control and is parsed, obtain mobile unit solenoid valve to be measured
The On-off signal status signal of controller 9 judges that input function is normal if On-off signal status signal is all high, no
Then judge input function exception.
Step 8：Mainboard 2 is waited for according to mobile unit communications protocol control CAN communication module 3 by CAN communication cable 3.1
Measuring car carries installation electromagnetical valve control 9 and sends switching value (28V level signals) output signal control instruction, is then set according to vehicle-mounted
Standby communications protocol control analog-to-digital conversion module 5 exports Vehicle Controller analog quantity to be measured by analog signal communication cable 5.1 and leads to
Believe that signal, mobile unit solenoid valve controller 9 to be measured are executed according to Vehicle Controller analog quantity signal of communication to be measured, and to
5 feedback analog signal of analog-to-digital conversion module, if the feedback analog signal that analog-to-digital conversion module 5 receives is within the scope of preset voltage value
(28V ± 1V) then judges that 9 analog output function of mobile unit solenoid valve controller to be measured is normal, otherwise judges abnormal；
Step 9：Mainboard 2 is waited for according to mobile unit communications protocol control CAN communication module 3 by CAN communication cable 3.1
Measuring car carries installation electromagnetical valve control 9 and sends solenoid valve control loine pressure inquiry instruction, mobile unit solenoid valve controller 9
Solenoid valve control line pressure number is fed back to mainboard 2 by CAN communication module 3 according to solenoid valve control loine pressure inquiry instruction
According to if solenoid valve control loine pressure Value Data (0 ± 0.2MPa) in values, judges solenoid valve control pipeline work(
Normally can otherwise it judge abnormal.
Step 10：Mainboard 2 sends out the cut-offing instruction of 28V to programmable power supply after the completion of test by serial communication modular 6
7, programmable power supply 7 control Vehicle Controller 8 to be measured and 9 cut-off of mobile unit solenoid valve controller to be measured electricity, and by the testing time,
Test result and test process data save as the storage of TXT (text document) document.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of intelligent test device based on vehicle-mounted CAN network, which is characterized in that it includes mainboard (2), CAN communication module
(3), I/O modules (4), analog-to-digital conversion module (5), serial communication modular (6) and programmable power supply (7), wherein the CAN communication
Module (3), I/O modules (4), the first communication ends of serial communication modular (6) are communicated to connect with mainboard (2), analog-to-digital conversion mould
The digital signal communication end of block (5) is communicated to connect with mainboard (2)；
Second communication ends of CAN communication module (3) are used to be separately connected Vehicle Controller to be measured by CAN communication cable (3.1)
(8) and the CAN communication interface of mobile unit solenoid valve controller to be measured (9), the second communication ends of I/O modules (4) are used to pass through
I/O communication cables (4.1) are separately connected Vehicle Controller to be measured (8) and the I/O of mobile unit solenoid valve controller to be measured (9) is logical
Believe that interface, the analog signal communication ends of analog-to-digital conversion module (5) are waited for for being separately connected by analog signal communication cable (5.1)
The analog signal communication ends of measuring car set controller (8) and mobile unit solenoid valve controller to be measured (9), serial communication modular (6)
The second communication ends connection programmable power supply (7) control terminal, the feeder ear of programmable power supply (7) is used to pass through service cable (7.1)
It is separately connected the power supply interface of Vehicle Controller to be measured (8) and mobile unit solenoid valve controller to be measured (9).
2. the intelligent test device according to claim 1 based on vehicle-mounted CAN network, it is characterised in that：It further includes
Cpci bus bottom plate (1), the CAN communication module (3), I/O modules (4), the first communication ends of serial communication modular (6) are logical
It crosses cpci bus bottom plate (1) to communicate to connect with mainboard (2), the digital signal communication end of analog-to-digital conversion module (5) is total by CPCI
Line bottom plate (1) is communicated to connect with mainboard (2).
3. the intelligent test device according to claim 1 based on vehicle-mounted CAN network, it is characterised in that：The program-controlled electric
Source (7) is by 380V power supply power supplies, the cpci bus bottom plate (1), mainboard (2), CAN communication module (3), I/O modules (4), mould
Number conversion module (5) and serial communication modular (6) are by 220V power supply power supplies.
4. the intelligent test device according to claim 1 based on vehicle-mounted CAN network, it is characterised in that：The mainboard (2)
For sending control instruction respectively to Vehicle Controller to be measured (8) and mobile unit solenoid valve controller to be measured (9), and receives and wait for
Measuring car set controller (8) and mobile unit solenoid valve controller to be measured (9) according to instruction execution relevant action feedback result, into
Row interpretation is analyzed, the CAN communication for completing to treat measuring car set controller (8) and mobile unit solenoid valve controller to be measured (9) communicates,
The test that input/output communication, analog parameter communicate, and real-time storage test data.
5. the intelligent test device according to claim 1 based on vehicle-mounted CAN network, it is characterised in that：The mainboard (2)
It is additionally operable to control programmable power supply (7) by serial communication modular (6), with Vehicle Controller (8) completely to be measured and waits for measuring car
The power supply for carrying installation electromagnetical valve control (9) needs.
6. the intelligent test device according to claim 1 based on vehicle-mounted CAN network, it is characterised in that：The CAN communication
Module (3) is used to inquire Vehicle Controller (8) to be measured and mobile unit solenoid valve control to be measured according to agreement output CAN inquiry instructions
The CAN communication status data information of device (9) processed；Vehicle Controller (8) to be measured is controlled according to agreement output CAN instructions and waits for measuring car
It carries installation electromagnetical valve control (9) and executes corresponding operation, to meet CAN communication functional test needs.
7. the intelligent test device according to claim 1 based on vehicle-mounted CAN network, it is characterised in that：The I/O modules
(4) it is used to treat measuring car set controller (8) and the input/output function of mobile unit solenoid valve controller to be measured (9) is surveyed
Examination, I/O modules (4) export switching value to Vehicle Controller to be measured (8) and mobile unit solenoid valve controller to be measured (9), and press
The input and output work(that protocol requirement tests Vehicle Controller (8) and mobile unit solenoid valve controller to be measured (9) to be measured is closed in photograph
Can whether normal.
8. a kind of mobile unit intelligent test method of device according to claim 1, which is characterized in that it includes following step
Suddenly：
Step 1：Mainboard (2), which by serial communication modular (6) sends out power data and instructs, gives programmable power supply (7), programmable power supply (7)
Export electric energy give Vehicle Controller to be measured (8) and mobile unit solenoid valve controller to be measured (9), Vehicle Controller (8) to be measured and
Mobile unit solenoid valve controller (9) to be measured powers on and self-operating；
Step 2：Mainboard (2) controls CAN communication module (3) according to mobile unit communications protocol and is given by CAN communication cable (3.1)
The CAN communication interface of Vehicle Controller (8) to be measured sends CAN communication and inquires data command, if mainboard (2) can pass through CAN communication
Module (3) receives the feedback data frame that Vehicle Controller to be measured (8) requires to execute according to mobile unit communications protocol, and explanation waits for
Measuring car set controller (8) CAN communication function is normal, otherwise judges CAN communication exception；
Step 3：Mainboard (2) control I/O modules (4) by I/O communication cables (4.1) export high level digital output modul signal to
Then Vehicle Controller (8) to be measured passes through CAN communication cable according to mobile unit communications protocol control CAN communication module (3)
(3.1) it gives Vehicle Controller to be measured (8) to send input state CAN and inquires data command, mainboard (2) receives vehicle-mounted control to be measured
The input state CAN data-messages of device (8) feedback are simultaneously parsed, and the On-off signal shape of Vehicle Controller to be measured (8) is obtained
State signal judges that input function is normal if On-off signal status signal is all high, otherwise judges input function exception；
Step 4：Mainboard (2) is given according to mobile unit communications protocol control CAN communication module (3) by CAN communication cable (3.1)
Vehicle Controller (8) to be measured sends switching value output signal control instruction, then controls modulus according to mobile unit communications protocol
Conversion module (5) exports Vehicle Controller analog quantity signal of communication to be measured by analog signal communication cable (5.1), to be measured vehicle-mounted
Controller (8) is executed according to Vehicle Controller analog quantity signal of communication to be measured, and to analog-to-digital conversion module (5) feedback analog
Signal, if the feedback analog signal that analog-to-digital conversion module (5) receives judges vehicle-mounted control to be measured within the scope of preset voltage value
Device (8) analog output function is normal, otherwise judges abnormal；
Step 5：Mainboard (2) is given according to mobile unit communications protocol control CAN communication module (3) by CAN communication cable (3.1)
Vehicle Controller (8) to be measured sends mobile unit hydraulic system analog quantity inquiry instruction, and Vehicle Controller (8) to be measured is according to vehicle-mounted
Hydraulic Equipment analog quantity inquiry instruction feeds back mobile unit hydraulic system pressure by CAN communication module (3) to mainboard (2)
Value Data, if mobile unit hydraulic system pressure Value Data in values, judges mobile unit hydraulic system function
Normally, otherwise judge abnormal.
9. mobile unit intelligent test method according to claim 8, it is characterised in that：It further include step 6 after step 5：
Mainboard (2) controls CAN communication module (3) according to mobile unit communications protocol and vehicle-mounted is set to be measured by CAN communication cable (3.1)
The CAN communication interface of standby solenoid valve controller (9) sends CAN communication and inquires data command, if mainboard (2) can pass through CAN communication
Module (3) receives the feedback coefficient that mobile unit solenoid valve controller (9) to be measured requires to execute according to mobile unit communications protocol
According to frame, illustrate that the CAN communication function of mobile unit solenoid valve controller (9) to be measured is normal, otherwise judges CAN communication exception；
Step 7：Mainboard (2) control I/O modules (4) by I/O communication cables (4.1) export high level digital output modul signal to
Then mobile unit solenoid valve controller (9) to be measured passes through CAN according to mobile unit communications protocol control CAN communication module (3)
Communication cable (3.1) sends input state CAN to mobile unit solenoid valve controller (9) to be measured and inquires data command, mainboard (2)
It receives the input state CAN data-messages of mobile unit solenoid valve controller (9) feedback to be measured and is parsed, obtained to be measured
The On-off signal status signal of mobile unit solenoid valve controller (9) judges if On-off signal status signal is all high
Input function is normal, otherwise judges input function exception；
Step 8：Mainboard (2) is given according to mobile unit communications protocol control CAN communication module (3) by CAN communication cable (3.1)
Mobile unit solenoid valve controller (9) to be measured sends switching value output signal control instruction, then communicates and assists according to mobile unit
View control analog-to-digital conversion module (5) exports Vehicle Controller analog quantity communication letter to be measured by analog signal communication cable (5.1)
Number, mobile unit solenoid valve controller (9) to be measured is executed according to Vehicle Controller analog quantity signal of communication to be measured, and to mould
Number conversion module (5) feedback analog signal, if the feedback analog signal that analog-to-digital conversion module (5) receives is in preset voltage value range
It is interior, then judge that mobile unit solenoid valve controller (9) analog output function to be measured is normal, otherwise judges abnormal；
Step 9：Mainboard (2) is given according to mobile unit communications protocol control CAN communication module (3) by CAN communication cable (3.1)
Mobile unit solenoid valve controller (9) to be measured sends solenoid valve control loine pressure inquiry instruction, mobile unit solenoid valve control
Device (9) feeds back solenoid valve control by CAN communication module (3) according to solenoid valve control loine pressure inquiry instruction to mainboard (2)
Loine pressure Value Data, if solenoid valve control loine pressure Value Data judges solenoid valve control pipeline in values
Function is normal, otherwise judges abnormal.
10. mobile unit intelligent test method according to claim 9, it is characterised in that：It further include step after step 9
10：Mainboard (2) sends out cut-offing instruction by serial communication modular (6) after the completion of test and gives programmable power supply (7), programmable power supply
(7) control Vehicle Controller (8) to be measured and mobile unit solenoid valve controller to be measured (9) cut-off electricity, and by the testing time, test
As a result the storage of TXT documents is saved as with test process data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810374696.2A CN108632120A (en) | 2018-04-24 | 2018-04-24 | Intelligent test device based on vehicle-mounted CAN network and test method |
Applications Claiming Priority (1)
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| CN115225555A (en) * | 2022-05-17 | 2022-10-21 | 广州汽车集团股份有限公司 | Test method, system, device, electronic equipment and medium for Internet of vehicles terminal |
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