CN108445314A - The test device and vehicle of vehicle electric appliance - Google Patents
The test device and vehicle of vehicle electric appliance Download PDFInfo
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- CN108445314A CN108445314A CN201810112310.0A CN201810112310A CN108445314A CN 108445314 A CN108445314 A CN 108445314A CN 201810112310 A CN201810112310 A CN 201810112310A CN 108445314 A CN108445314 A CN 108445314A
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- vehicle
- electric appliance
- vehicle electric
- test device
- circuit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- 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
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
Abstract
The present invention proposes that a kind of test device and vehicle of vehicle electric appliance, the device include：Function selection interface, for providing the option for making vehicle enter vehicle electrical testing pattern or vehicle CAN analytical models；Vehicle detection module, for when vehicle enters vehicle electrical testing pattern, fault detect to be carried out to the circuit under test that one or more vehicle electric appliances form according to one or more vehicle electric appliances of user's selection；CAN analysis modules, for when whole vehicle CAN analytical models, the CAN capture collected messages of transceiver being compared with object message corresponding with current vehicle in preset message data library, to carry out vehicle CAN accident analyses.The present invention quickly and easily can carry out validity test to vehicle electric appliance, have the advantages that accuracy is high, reliability is high, autgmentability is strong.
Description
Technical field
The present invention relates to technical field of vehicle, more particularly to a kind of the test device and vehicle of vehicle electric appliance.
Background technology
With the development of the technologies such as car electrics, the electrical part proportion of vehicle is more and more, and function also becomes increasingly complex,
CAN bus is more and more universal.
Commercialization vehicle factor comes detailed inspection electrical part and Electrical System without effective vehicle electric test equipment substantially at present
The electric property of system, it is very inconvenient in terms of inspection after CAN bus.Typically just pass through some easy works
Dress is tested to check vehicle electric appliance, or by multimeter, and (such as various in the relative complex parts of some functions
Controller) in, but without relatively effective control and the method for inspection.In practical applications, for the parts of these functions complexity,
Inspector relies solely on easy size, drawing is the quality that can not effectively identify parts performance, is tied so as to cause examining
Fruit accuracy and reliability is not high.
Invention content
The present invention is directed at least solve one of above-mentioned technical problem.
For this purpose, an object of the present invention is to provide a kind of test device of vehicle electric appliance, which can conveniently, soon
Validity test promptly is carried out to vehicle electric appliance, has the advantages that accuracy is high, reliability is high, autgmentability is strong.
It is another object of the present invention to propose a kind of vehicle.
To achieve the goals above, the embodiment of first aspect present invention proposes a kind of test device of vehicle electric appliance,
Including：Function selection interface, for providing the option for making vehicle enter vehicle electrical testing pattern or vehicle CAN analytical models；
Vehicle detection module, for when vehicle enters vehicle electrical testing pattern, one or more vehicles according to user's selection to be electric
Device carries out fault detect to the circuit under test that one or more of vehicle electric appliances form；CAN analysis modules, it is whole for working as vehicle
When vehicle CAN analytical models, it is opposite with current vehicle with preset message data library that CAN is captured into the collected message of transceiver
The object message answered is compared, to carry out vehicle CAN accident analyses.
The test device of vehicle electric appliance according to the ... of the embodiment of the present invention, provides function selection interface, when user selects vehicle
When electrical testing pattern, fault detect is carried out according to the circuit under test of selection, it is right when user selects vehicle CAN analytical models
Collected CAN message compares and analyzes, and vehicle CAN accident analyses is realized, so as to quickly and easily to vehicle electric appliance
Validity test is carried out, has the advantages that accuracy is high, reliability is high, autgmentability is strong, and can accurately be divided CAN message
Analysis, the high CAN failure analysis results of output reliability.
In addition, the test device of vehicle electric appliance according to the above embodiment of the present invention can also have following additional technology
Feature：
In some instances, the vehicle detection module includes：It is described to be used to acquire institute from control chip from control chip
State the related data of one or more vehicle electric appliances；Master control chip is connected with described from control chip, for according to the phase
It closes data to be detected the circuit under test, and transmits testing result.
In some instances, the vehicle detection module further includes：Display module is connected with the Master control chip, uses
In the display testing result.
In some instances, the circuit under test of one or more of vehicle electric appliance compositions includes at least：Switch detection electricity
Road, relay test circuit, motor detection circuit, lamp group detection circuit, speaker detection circuit, sound system detection circuit, control
Device detection circuit, sensor and combination instrument system detectio circuit processed.
In some instances, the CAN analysis modules are used to, when collected message and the object message difference, sentence
Surely there is normal CAN failures, and export corresponding fault message.
In some instances, the CAN analysis modules are additionally operable to the work(to the combination instrument of vehicle by CAN transmission-receiving functions
It can be detected.
In some instances, the function of the combination instrument includes at least water temperature function.
In some instances, the Master control chip is STM32 chips.
In some instances, it is described from control chip be STM8 chips.
To achieve the goals above, the embodiment of second aspect of the present invention discloses a kind of vehicle, including of the invention above-mentioned
The test device of vehicle electric appliance described in first aspect embodiment.
Vehicle according to the ... of the embodiment of the present invention quickly and easily can carry out validity test to its vehicle electric appliance, have standard
The advantage that true property is high, reliability is high, autgmentability is strong, and CAN message can accurately be analyzed, the high CAN of output reliability
Failure analysis result.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the structure diagram of the test device of vehicle electric appliance according to an embodiment of the invention；
Fig. 2 is the schematic diagram of function selection interface accord to a specific embodiment of that present invention；
Fig. 3 is the circuit diagram of vehicle detection module accord to a specific embodiment of that present invention；
Fig. 4 is switch detection circuit schematic diagram accord to a specific embodiment of that present invention；
Fig. 5 is motor detection circuit schematic diagram accord to a specific embodiment of that present invention；
Fig. 6 is the function choosing-item schematic diagram of CAN analysis modules accord to a specific embodiment of that present invention.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The test device and vehicle of vehicle electric appliance according to the ... of the embodiment of the present invention are described below in conjunction with attached drawing.
Fig. 1 is the structure diagram of the test device of vehicle electric appliance according to an embodiment of the invention.As shown in Figure 1, should
Device 100 includes：Function selection interface 110, vehicle detection module 120 and CAN (Controller Area Network, control
Device local area network) analysis module 130.
Wherein, function selection interface 110 makes vehicle enter vehicle electrical testing pattern or vehicle CAN analysis moulds for providing
The option of formula, such as shown in Fig. 2.Specifically, after the test device 110 of the vehicle electric appliance is opened, function selection is provided first
Interface 110, two big function choosing-items of offer are that vehicle is made to enter vehicle electrical testing pattern respectively to carry out vehicle electric appliance inspection
The function choosing-item of survey and vehicle is made to enter vehicle CAN analytical models to carry out the function choosing-item of vehicle CAN accident analyses.Specifically
In example, function selection interface 110 provides corresponding function choosing-item by touch screen, or can also pass through corresponding button
There is provided function choosing-item, such as shown in Fig. 2.
Vehicle detection module 120 be used for when vehicle enters vehicle electrical testing pattern, according to user selection one or
Multiple vehicle electric appliances carry out fault detect to the circuit under test that one or more vehicle electric appliances form.Specifically, i.e. user is logical
The option that function selection interface 110 has selected that vehicle is made to enter vehicle electrical testing pattern is crossed, then vehicle enters the inspection of vehicle electric appliance
Survey pattern, to be detected in this mode to vehicle electric appliance, to realize vehicle electrical testing function.
Specifically, in one embodiment of the invention, in conjunction with shown in Fig. 3, vehicle detection module 120 for example including：From
Control chip 121 and Master control chip 122.Wherein, it is used to acquire the correlation of one or more vehicle electric appliances from control chip 121
Data；Master control chip 122 is connected with from control chip 121, for being detected to circuit under test according to related data, and
Transmit testing result.
Wherein, in conjunction with shown in Fig. 3, Master control chip 122 is, for example, STM32 chips, is, for example, STM8 from control chip 121
Chip.
Further, in one embodiment of the invention, in conjunction with shown in Fig. 3, vehicle detection module 120 further includes display
Module 123.Display module 123 is connected with Master control chip 122, for showing testing result.As shown in figure 3, detection module 123
The for example, optional LCD display of size.
Specifically, as shown in figure 3, after into vehicle electrical testing pattern, 12V either 24V electric systems are selected.
After having selected voltage voltage, the selection sort interface of various electrical part in interface will be entered, this showing interface is whole
The name option of each electrical part of vehicle, and the interface has a scalability, user can the selection of oneself demand it is one or more whole
The name option of vehicle electric appliance, to the circuit under test needed for composition.Such as it is elected in stacked switch, car body controller, Brake lamp,
The devices such as braking light switch, Rear Fog Lamp, so that it may to constitute the control circuit of a car body controller；It can also be individually to a certain
A device is detected control, for example only judges the function of small switch, then one can be selected to be tested.
Further, in conjunction with shown in Fig. 3, there is energy-storage battery inside vehicle detection module 120, non-transformer behaviour can be carried out
Make, can also be powered with AC socket, inside has AC-DC conversion decompression steady pressure treatment circuits, microcontroller to use from control
Chip 121 (STM8 chips) and Master control chip 122 (STM32 chips), wherein being mainly used for power supply, master from control chip 121
Switch, selection, the realization of switch acquisition function, Master control chip 122 are logical for switch acquisition and with liquid crystal display
The realization of communication function, LCD (display module 123) is for example, by using the optional liquid crystal display of size, such as 15 cun.
Specifically, in one embodiment of the invention, the circuit under test that said one or multiple vehicle electric appliances form is extremely
Include less：Switch detection circuit, relay test circuit, motor detection circuit, lamp group detection circuit, speaker detection circuit, sound
Acoustic system detection circuit, controller detection circuit, sensor and combination instrument system detectio circuit.
Exemplary description is carried out to the specific detection process of the function of each circuit under test individually below.
The detection process of switch detection circuit：After choosing some switch, individually tested, then microcontroller passes through
Sample circuit may determine that whether switch is pressed, and after reviewer is by pressing lower switch, " switch is pressed for display on comparative liquid crystal
Under ", if liquid crystal display is not consistent with reviewer's practical operation, illustrate that switch has broken down, as shown in figure 4, through
Over-sampling circuit obtains the normal through and off of small lamp switch, and microcontroller constantly reads this pin level state.Specifically, above-mentioned inspection
Survey process is for example by using function bit_status=GPIO_ReadInputPin (GPIOX, GPIO_PIN_x)；if
(bit_status==SETor RESET) is realized.
The detection process of relay test circuit：Relay needs and the switching group of some function is used in combination, with
For small lamp switch, small lamp switch, lampet relay are selected in device selection interface, if after pressing small lamp switch, liquid crystal
It shows " small lamp switch is pressed " ", " lampet relay inhale and ", then illustrates that relay and small lamp switch are all normal, other relays
The detection process of device is similar therewith.Port circuit as 20 tunnels microcontroller Jie Liao, may be implemented 20, wherein it is to make to have several
It is used for reserved expanded function.Here small lamp switch is pressed or the suction of lampet relay and state are to make hook with a box
Come what is realized, because if showing a string of words after microcontroller reading state, more complicated than one hook of display is more.
The detection process of motor detection circuit：In general electric machines test is also required to a switch to be used in combination, and
A figure is added after electromechanical testing, for indicating the operating current curve of motor, because of motor electric current meeting at work
From very high current to a stable running current, and an electric current can also be generated again by disconnecting.Here with airconditioning control
For device and air blower, i.e., after page selection air-conditioner controller and air blower and warm wind relay, operating air conditioner controller
Air blast is kept off, and air blower is started to work.Here the electric current of motor is realized by sample circuit, by being sampled from control chip STM8,
And be converted into array and pass to Master control chip STM32, using IIC, (Inter-Integrated Circuit integrate electricity for transmission
Road bus), the function of acquisition is, for example,：
ADC1_Init(ADC1_CONVERSIONMODE_SINGLE,ADC1_CHANNEL_0,
ADC1_PRESSEL_FCPU_D2,ADC1_EXTTRIG_TIM,DISABLE,
ADC1_ALIGN_LEFT,ADC1_SCHMITTTRIG_CHANNEL0,DISABLE)；
ADC1_Cmd(ENABLE)；U16_adc1_value=ADC1_GetConversionValue ()；Electric machinery works
The principle of acquisition is as shown in figure 5, failure judgement the case where can be showed according to realization.Wherein, Master control chip STM32 is logical
It crosses spi (Serial Peripheral Interface, Serial Peripheral Interface (SPI)) and passes to LCD liquid crystal displays (display module 123).
The detection process of lamp group detection circuit：The detection of lamp group (such as light bulb) is similar with motor, and by selecting not
With functional switch and lamp group and relay combine realizations together, and the load characteristic of light bulb is also as the acquisition of motor, logical
It crosses A/D module and passes to liquid crystal display.
Loudspeaker detect the detection process of Russia's circuit：The detection needs and stacked switch, electric horn breaker point unit of loudspeaker (electric horn)
It is used in combination, or can also be realized by the state of reserved switch.Select stacked switch and electric horn, electric horn breaker point unit
After, it can detect whether horn button is pressed by stacked switch horn button, on the page, whether detect electric horn breaker point unit
Inhale and, while internal series-connection voltage divider resistor connect microcontroller, this concatenated electric current of monolithic machine testing, may be implemented loudspeaker electricity
The display of stream, with the principle light bulb, motor.Inspection personnel can judge loudspeaker whether if loudspeaker are not rung say by failure accordingly
Bright loudspeaker failure.
The detection process of sound system detection circuit：When selected radio inside sound system and each loud speaker with
Afterwards, after connecting plug-in unit, microcontroller carries out voltage acquisition to the low resistance of each loudspeaker in series, by acquisition and program
ADC (Analog-to-Digital Converter, analog-digital converter) value of setting compares and analyzes, if do not set
Range specification is faulty.Then judge u16u16_adc1_value by obtaining ADC；Wherein, u16_adc1_value=
ADC1_GetConversionValue()；Judge internal addition filter, 5 determinations of accumulation are failures.Specifically, if
(u16_adc1_value ＞ AD) n++；If (n%5=0)；Printf prints out failure.
The detection process of controller detection circuit：The detection of controller system is by all outputs of controller and to input all
Into microcontroller, the method for acquisition is similar with aforementioned process, such as the lampet control in Fig. 4, if along with stacked switch
Signal light control has selected Rear Fog Lamp, after selection fog lamp and Rear Fog Lamp relay, if Rear Fog Lamp is bright, illustrate car body controller without
Problem.After microcontroller recognizes these signals, if detecting Rear Fog Lamp circuit no current, car body controller is printed out
Failure.
The detection process of sensor and combination instrument system detectio circuit：Sensor is relatively easy with instrument, if only
A certain item function is selected, or goes wrong and facilitates investigation, then only selects a certain item, if hook all on the page all selects,
It can also realize the fuel sensor and fuel gauge in the displaying and detection, such as test instrumentation system of vehicle electrical function, it will
Fuel sensor oneself slides into fixed position, and microcontroller calculates the resistance value that can be obtained at this time, passes through write-in itself
The correspondence of ADC and resistance realizes that if R=3, instrument does not indicate, illustrate instrument fuel oil failure, because gauge internal has
Microcontroller identifies stepper motor, so can not achieve the failure of printout instrument here, and the identification for passing through human eye.
CAN analysis modules 130 are used for when whole vehicle CAN analytical models, and CAN is captured the collected message of transceiver
It is compared with object message corresponding with current vehicle in preset message data library, to carry out vehicle CAN accident analyses.
Specifically, specifically, in one embodiment of the invention, CAN analysis modules 130 are used to work as collected message
When with object message difference, there are normal CAN failures for judgement, and export corresponding fault message.
In other words, the option for making vehicle enter vehicle CAN analytical models is selected in function selection interface 110 as user
When, vehicle enters CAN analytical models to realize vehicle CAN accident analysis functions, and it is aobvious to enter function for example shown in fig. 6 at this time
Show interface, because this is to need to be upgraded at any time, and the message of the possible CAN protocol of different vehicles has part difference, thing
The message store in the interface creating vehicle can first be passed through.For example the corresponding message of engine speed is 0CF00400, at this time
ID can be manually entered into and by byte, position all according to protocol definition, real vehicle is just passed through into CAN catchers after defining
Collected message carries out basic analysis, can be saved in inside equipment after creating, and can pass through choosing after keeping
Vehicle message analysis is selected to compare and analyze.Acquisition message can capture transceiver by CAN and be captured, can after capturing well
It is preserved, and is saved in internal SD card with oneself, can at this time automatically create TXT, if in a vehicle message analysis, it can be with
Vehicle in library is compared and analyzed with the message that SD is captured, if there is different, then can print out a certain item not
With the different fault modes represented.
Specifically, CAN is captured, transceiver function is in fact fairly simple, is exactly using the CAN bus work(inside microcontroller
Can, by transceiver, in the corresponding program of microcontroller inner setting CAN, minor function such as specifically may be used and realize：
CAN_InitStatus_TypeDef can_init_status；Can_init_status=CAN_Init (CAN_
MasterCtrl_AllDisabled,CAN_Mode_Normal,C AN_SynJumpWidth_1TimeQuantum,CAN_
BitSeg1_1TimeQuantum,CAN_BitSeg2_1TimeQuan tum,CAN_ClockSource_Internal,
0xxx)；
CAN_FilterInit(CAN_FilterNumber_0,DISABLE,CAN_FilterMode_IdMask,
CAN_FilterScale_8Bit,0x,0x,0x,0x,0x,0x,0x,0x)；Because the ID of message is more, in fact this
In can not have to setting, basic be exactly all to receive, otherwise may reception it is not comprehensive；CAN_ITConfig(CAN_IT_TME,
DISABLE)；Can_id=CAN_GetReceivedId ()；Obtain ID values, data=CAN_
GetReceivedData(0x00)；Data are obtained, others are here without repeating.
In one embodiment of the invention, CAN analysis modules 130 are additionally operable to the group to vehicle by CAN transmission-receiving functions
The function of closing instrument is detected.The function of combination instrument includes at least water temperature function.
In other words, in an embodiment of the present invention, the work(for checking combination instrument can also be realized by CAN transmission-receiving functions
Can, for example check whether the water temperature function of combination instrument normal, then by sending the first character in fixed ID such as F004
Joint number evidence, you can represent water temperature, the page has the later numerical value that converts and shows in system.It is indicated by this numerical value and instrument
Whether actually carrying out comparison, can to obtain instrument correct.
To sum up, the test device of vehicle electric appliance of the invention is based on the various electrical part combination LCD touch LCDs screen skills of vehicle
Art has the function of that the operation interface of selection can be carried out, and realizes various electric systems and the functional check of electrical part of vehicle；Separately
Outside, operation interface is also achieved on touch LCD and creates the CAN databases of vehicle, and can be read CAN transceiver by USB flash disk
The CAN taken is opened to be compared with the standard database established, and analyzes the fault mode of some data, reliability and accuracy
It is higher.
The test device of vehicle electric appliance according to the ... of the embodiment of the present invention, provides function selection interface, when user selects vehicle
When electrical testing pattern, fault detect is carried out according to the circuit under test of selection, it is right when user selects vehicle CAN analytical models
Collected CAN message compares and analyzes, and vehicle CAN accident analyses is realized, so as to quickly and easily to vehicle electric appliance
Validity test is carried out, has the advantages that accuracy is high, reliability is high, autgmentability is strong, and can accurately be divided CAN message
Analysis, the high CAN failure analysis results of output reliability.
Further embodiment of the present invention additionally provides a kind of vehicle.The vehicle includes any one above-mentioned implementation of the present invention
The test device of vehicle electric appliance described in example.
Vehicle according to the ... of the embodiment of the present invention quickly and easily can carry out validity test to its vehicle electric appliance, have standard
The advantage that true property is high, reliability is high, autgmentability is strong, and CAN message can accurately be analyzed, the high CAN of output reliability
Failure analysis result.
In addition, other compositions of vehicle according to the ... of the embodiment of the present invention and effect are for those of ordinary skill in the art
For be all known, in order to reduce redundancy, do not repeat.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is by claim and its equivalent limits.
Claims (10)
1. a kind of test device of vehicle electric appliance, which is characterized in that including：
Function selection interface (110), for providing the choosing for making vehicle enter vehicle electrical testing pattern or vehicle CAN analytical models
；
Vehicle detection module (120), one or more for when vehicle enters vehicle electrical testing pattern, being selected according to user
A vehicle electric appliance carries out fault detect to the circuit under test that one or more of vehicle electric appliances form；
CAN analysis modules (130), for when whole vehicle CAN analytical models, CAN to be captured the collected message of transceiver
It is compared with object message corresponding with current vehicle in preset message data library, to carry out vehicle CAN accident analyses.
2. the test device of vehicle electric appliance according to claim 1, which is characterized in that the vehicle detection module (120)
Including：
From control chip (121), the related data for acquiring one or more of vehicle electric appliances；
Master control chip (122) is connected from control chip (121) with described, is used for according to the related data to described to be measured
Circuit is detected, and transmits testing result.
3. the test device of vehicle electric appliance according to claim 2, which is characterized in that the vehicle detection module (120)
Further include：
Display module (123) is connected with the Master control chip (122), for showing the testing result.
4. the test device of vehicle electric appliance according to claim 1, which is characterized in that one or more of vehicle electric appliances
The circuit under test of composition includes at least：Switch detection circuit, relay test circuit, motor detection circuit, lamp group detection circuit,
Speaker detection circuit, sound system detection circuit, controller detection circuit, sensor and combination instrument system detectio circuit.
5. the test device of vehicle electric appliance according to claim 1, which is characterized in that the CAN analysis modules (130) are used
When collected message and the object message difference, there are normal CAN failures for judgement, and export corresponding failure letter
Breath.
6. the test device of vehicle electric appliance according to claim 5, which is characterized in that the CAN analysis modules (130) are also
For being detected to the function of the combination instrument of vehicle by CAN transmission-receiving functions.
7. the test device of vehicle electric appliance according to claim 6, which is characterized in that the function of the combination instrument is at least
Including water temperature function.
8. the test device of vehicle electric appliance according to claim 2, which is characterized in that the Master control chip (122) is
STM32 chips.
9. the test device of vehicle electric appliance according to claim 2, which is characterized in that described to be from control chip (121)
STM8 chips.
10. a kind of vehicle, which is characterized in that include the test device such as claim 1-9 any one of them vehicle electric appliances.
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| CN201810112310.0A CN108445314A (en) | 2018-02-05 | 2018-02-05 | The test device and vehicle of vehicle electric appliance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109919415A (en) * | 2019-01-16 | 2019-06-21 | 北京百度网讯科技有限公司 | Supervision processing method, apparatus, equipment and storage medium based on unmanned vehicle |
| CN112019394A (en) * | 2019-05-31 | 2020-12-01 | 联合汽车电子有限公司 | Test circuit, test device and test method for evaluating CAN bus signal quality |
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Application publication date: 20180824 |