CN106444698A - Integrated testing device and method for tire pressure monitoring system - Google Patents
Integrated testing device and method for tire pressure monitoring system Download PDFInfo
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- CN106444698A CN106444698A CN201610786337.9A CN201610786337A CN106444698A CN 106444698 A CN106444698 A CN 106444698A CN 201610786337 A CN201610786337 A CN 201610786337A CN 106444698 A CN106444698 A CN 106444698A
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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
- G05B23/0208—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
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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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Abstract
The invention discloses an integrated testing device and method for a tire pressure monitoring system, and the device comprises an upper computer, a programmable power supply, and a testing unit. The testing unit comprises a sensitivity testing module, a basic function testing module, and a signal quality testing module. The device is integrated with a testing environment of the tire pressure monitoring system, achieves the testing of the sensitivity of the tire pressure monitoring system, carries out the work performance verification of the tire pressure monitoring system, meets the development demands of the tire pressure monitoring system, reduces the testing time, improves the stability of the testing environment, improves the reliability of a testing result, and saves the time in manually building the testing environment for each test project separation test and debugging a testing rack. The device solves problems that the mode of manually building a rack may cause electrical environment instability and testing environment differences.
Description
Technical field
The present invention relates to automotive engineering field, specifically refer to a kind of comprehensive test device for tire pressure monitoring system
And method of testing.
Background technology
Tire Pressure Monitor System (TPMS) as a kind of to what the information such as air pressure of automobile tire, temperature detected is
System, tire pressure monitoring system is mainly by 1 tire pressure monitoring system ECU and 4 tire pressure monitoring system sensor structures being placed in tire
Become.Tyre pressure sensor is sent the tire pressure detecting to controller by radiofrequency signal；Controller receives tire pressure
Afterwards, the display terminal being sent to vehicle by CAN is shown.Tire pressure monitoring system ECU and tire pressure monitoring system sensing
The reliability of the sensitivity of device and system work is particularly significant to traffic safety.Therefore, to this module normal function and performance
Test checking is particularly important.At present, the test device of the sensitivity test for Tire Pressure Monitor System not yet occurs
And method.
Content of the invention
The purpose of the present invention is to be directed to carry out sensitivity test and performance verification currently without to Tire Pressure Monitor System
Problem, and propose a kind of comprehensive test device for tire pressure monitoring system and method for testing.
For achieving the above object, the comprehensive test device for tire pressure monitoring system designed by the present invention, including upper
Machine, programmable power supply and test cell, it is characterized in that, described test cell includes sensitivity test module；
Described host computer is used for controlling the unlatching of operational blocks which partition system, setting and closing in test cell, receives described test single
In unit, the return value of operational blocks which partition system outputs test result through calculating and shows；
Described programmable power supply is used for being powered to test cell and tire pressure monitoring system ECU according to the instruction of described host computer；
The control that described sensitivity test module is used for according to described host computer sends sensitivity to tire pressure monitoring system ECU
Test radio frequency analog signal simultaneously receives the sensitivity test radiofrequency signal that tire pressure monitoring system ECU returns, and then will send reception
Situation returns to host computer.
Further, described test cell also includes Basic function testing module, and described Basic function testing module is used for
Control according to described host computer arranges tire pressure monitoring system sensor environment parameter, then receives described tire pressure monitoring system and passes
Sensor environment radiofrequency signal and the sensor environment bus signals of described tire pressure monitoring system ECU return that sensor sends, then
Return value is sent the control being used for according to described host computer to signal quality testing module described in host computer and receives tire pressure monitoring
The signal quality radiofrequency signal of system sensor transmission simultaneously sends return value to host computer.
Further, described test cell also includes signal quality testing module, and described signal quality testing module is used
Receive the signal quality radiofrequency signal that tire pressure monitoring system sensor sends in the control according to described host computer and by return value
Send to host computer.
Further, described sensitivity test module include signal generating source, power amplifier, signal transmitting module and
Receive monitoring modular, the control that described signal generating source is used for according to described host computer produces sensitivity test radio frequency analog letter
Number, the control that described power amplifier is used for according to described host computer adjusts the power of sensitivity test radio frequency analog signal, institute
State signal transmitting module for sending sensitivity test radio frequency analog signal to tire pressure monitoring system ECU and receiving monitoring mould
Block, described reception monitoring modular is big with the power of sensitivity test radiofrequency signal for comparing sensitivity test radio frequency analog letter
Little, and return value is sent to host computer.
Further, described Basic function testing module includes data tire environment simulator and parsing module, institute
State tire environment simulator and tire pressure monitoring system sensor, described parsing module are set for the control according to described host computer
The sensing returning for the sensor environment radiofrequency signal and tire pressure monitoring system ECU that receive the transmission of tire pressure monitoring system sensor
Device environment bus signals simultaneously send return value to host computer.Further, described signal quality testing module includes frequency spectrum
Analytical equipment, described spectrum analysis equipment is used for receiving tire pressure monitoring system sensor sending signal quality radiofrequency signal and returning
Return value to send to host computer.
Further, described tire environment simulator includes driving equipment, gas storage equipment and temperature control device.
Further, described parsing module includes bus data parsing module and radio frequency parsing module.
A kind of method of testing utilizing the above-mentioned comprehensive test device for tire pressure monitoring system, it is characterized in that,
Methods described includes sensitivity test；
The step of described sensitivity test is：Described host computer opens sensitivity test module, and arranges sensitivity test
The performance number of radio frequency analog signal, controls sensitivity test module to carry out sensitivity test, according to returning of sensitivity test module
Return the watt level being worth display sensitivity test radio frequency analog signal and sensitivity test radiofrequency signal or sensitivity test
Radio frequency analog signal does not receive successfully.
Preferably, described test cell also includes Basic function testing module, and methods described also includes Basic function testing；
The step of described Basic function testing is：Described host computer opens Basic function testing module, and arranges sensor environment parameter,
Control described Basic function testing module to adjust tire pressure monitoring system sensor local environment to designated value, surveyed according to basic function
The return value of die trial block pass through to calculate detect the detection accuracy of described tire pressure monitoring system sensor under this acceleration whether effectively,
Whether data is activation is normal, whether sensor element is effective, and whether the function of described tire pressure monitoring system ECU lost efficacy, warning plan
Slightly whether normal, then show testing result.
Preferably, described test cell also includes signal quality testing module；Methods described also includes signal quality testing；
The step of described signal quality testing is：Described host computer open signal quality test module and Basic function testing module, and
Temperature value in setting sensor environment parameter, controls described signal quality testing module to receive tire pressure monitoring system sensor and exists
The signal quality radiofrequency signal sending at a temperature of being somebody's turn to do, described host computer judges wherein according to the radiofrequency signal returning under different temperatures
Whether frequency of heart, frequency deviation region and performance number are in design load, and draw signal quality curve, then show testing result.
Preferably, the scope of the performance number of described sensitivity test radio frequency analog signal is -100dbm～0dbm.
Preferably, described sensor environment parameter includes vehicle tyre rotating speed, pressure of tire, temperature value.
Preferably, the centre carrier frequency of described signal quality radiofrequency signal is 433.92MHz, frequency deviation region ± 45KHz
For and performance number scope be -100dbm～0dbm.
The present invention can simulate that tire environment carries out normal function to tire pressure monitoring system and performance is tested, and exports survey
Test result, specifically possesses tire pressure monitoring system sensitivity test, Basic function testing and signal quality testing function, by aobvious
Show/operate that terminal and computer control system can carry out unlatching, setting and the closing of test function, and output test result.
It is an advantage of the current invention that：Integrated tire pressure monitoring system test environment, realizes tire pressure monitoring system sensitivity is surveyed
Examination, carries out work(performance verification to tire pressure monitoring system, meets tire pressure monitoring system exploitation demand, reduces the testing time, improve and survey
Examination environmental stability, improves test result reliability：Save manual, each test event and separate the built experimental enviroment of test, tune
The examination test-bed time；Solve to build the problems such as stand electrical environment that may be present unstability, test environment otherness manually.
Brief description
Fig. 1 is used for the structured flowchart of the comprehensive test device of tire pressure monitoring system for the present invention；
Fig. 2 is the structured flowchart of Fig. 1 medium sensitivity test module；
Fig. 3 is the structured flowchart of Basic function testing module in Fig. 1；
Fig. 4 is the structured flowchart of signal quality testing module in Fig. 1；
Fig. 5 is used for the flow process of the method for testing medium sensitivity test of the comprehensive test device of tire pressure monitoring system for the present invention
Figure；
Fig. 6 is used for the stream of Basic function testing in the method for testing of comprehensive test device of tire pressure monitoring system for the present invention
Cheng Tu, wherein Fig. 6 a are sensor function test flow chart, and Fig. 6 b is controller function test flow chart；
Fig. 7 is used for the stream of signal quality testing in the method for testing of comprehensive test device of tire pressure monitoring system for the present invention
Cheng Tu.
In figure：Host computer 1, display/operation terminal 1-1, computer control system 1-2, programmable power supply 2, sensitivity test
Module 3, signal generating source 3-1, power amplifier 3-2, signal transmitting module 3-3, receive monitoring modular 3-4, basic function is surveyed
Die trial block 4, tire environment simulator 4-1, driving equipment 4-11, gas storage equipment 4-12, temperature control device 4-13, parsing module 4-
2, bus data parsing module 4-21, radio frequency parsing module 4-22, signal quality testing module 5, spectrum analysis equipment 5-1, tire
Pressure monitoring system ECU6, tire pressure monitoring system sensor 7.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in figures 1-4, a kind of comprehensive test device for tire pressure monitoring system of the present invention, including host computer 1, journey
Control power supply 2 and test cell.Host computer 1 is connected with the input of programmable power supply 2, the output end of programmable power supply 2 respectively with test
Module and tire pressure monitoring system ECU6 connect, tire pressure monitoring system sensor 7 respectively with test cell and tire pressure monitoring system
ECU6 connects, and test cell includes sensitivity test module 3, Basic function testing module 4 and signal quality testing module 5.
Host computer 1 is used for controlling the unlatching of operational blocks which partition system, setting and closing in test cell, receives in test cell arbitrarily
The return value of module outputs test result through calculating and shows.Host computer 1 includes display/operation terminal 1-1 and computer control
System 1-2 processed, display/operation terminal 1-1 is used for showing and inputting arranges value, and computer control system 1-2 is used for calculating.
Programmable power supply 2 is used for being powered to test cell and tire pressure monitoring system ECU6 according to the instruction of host computer 1.
The control that sensitivity test module 3 is used for according to host computer 1 sends sensitivity test to tire pressure monitoring system ECU6
Radio frequency analog signal simultaneously receives the sensitivity test radiofrequency signal that tire pressure monitoring system ECU6 returns, and then will send reception condition
Return to host computer 1.Sensitivity test module 3 includes signal generating source 3-1, power amplifier 3-2, signal transmitting module 3-3
With reception monitoring modular 3-4, signal generating source 3-1 produces sensitivity test radio frequency analog for the control according to host computer 1 to be believed
Number, the control that power amplifier 3-2 is used for according to host computer 1 adjusts the power of sensitivity test radio frequency analog signal, and signal is sent out
Send module 3-3 for sending sensitivity test radio frequency analog signal to tire pressure monitoring system ECU6 and receiving monitoring modular 3-4,
Receive monitoring modular 3-4 to be used for comparing the watt level of sensitivity test radio frequency analog letter and sensitivity test radiofrequency signal, and
Return value is sent to host computer 1.
Basic function testing module 4 is used for the control and regulation tire pressure monitoring system sensor 7 environment ginseng according to host computer 1
Number, and adjust sensor rotation speed, for trigger sensor work, then receive the sensor that tire pressure monitoring system sensor 7 sends
Ambient radio-frequency signal and the sensor environment bus signals of tire pressure monitoring system ECU6 return, then return value is sent to host computer
1.Basic function testing module 4 includes data tire environment simulator 4-1 and parsing module 4-2, tire environment simulator
4-1 is used for the parameter value of test environment according to residing for the control and regulation tire pressure monitoring system sensor 7 of host computer 1, including tire pressure
Environment temperature residing for monitoring system sensor 7, air pressure and acceleration.Parsing module 4-2 is used for receiving tire pressure monitoring system biography
The sensor environment bus signals of the sensor environment radiofrequency signal of sensor 7 transmission and tire pressure monitoring system ECU6 return simultaneously will return
Return value to send to host computer 1.The sensor environment radiofrequency signal that tire pressure monitoring system sensor 7 sends carries detected ring
Border temperature, pressure information.Parsing module 4-2 includes bus data parsing module 4-21 and radio frequency parsing module 4-22, uses respectively
Validity in inspection controller part and sensor element.Tire environment simulator 4-1 includes driving equipment 4-11, gas storage
Equipment 4-12 and temperature control device 4-13.Driving equipment 4-11 is passed through this device of Motor drive according to the desired value of host computer 1 and is rotated
Simulation real vehicle tire rotational speed, and the speed feedback that can actually reach analogue means is to host computer 1；Gas storage equipment 4-12 is according to upper
The desired value of position machine 1 simulates pressure of tire by this device is carried out with inflation/deflation, and the air pressure that can actually reach analogue means
Feed back to host computer 1；Temperature control device 4-13 adjusts temperature in this device according to the desired value of host computer 1 by controlling adding thermal resistance
Simulation tire temperature, and the tire temperature that analogue means actually reaches can be fed back to host computer 1, for detecting tire pressure monitoring system
Effectively operating speed scope and tire pressure tire temperature detection accuracy.
The control that signal quality testing module 5 is used for according to host computer 1 receives the letter that tire pressure monitoring system sensor 7 sends
Number quality radiofrequency signal simultaneously sends return value to host computer 1.Signal quality testing module 5 includes spectrum analysis equipment 5-1, frequently
Analysis of spectrum equipment 5-1 be used for receiving tire pressure monitoring system sensor 7 sending signal quality radiofrequency signal and by return value send to
Host computer 1.
Utilize the method for testing of the above-mentioned comprehensive test device for tire pressure monitoring system, including sensitivity test, basic
Functional test and signal quality testing, three kinds of method of testings do not have timing requirements, also can relatively independent complete.
Sensitivity test
The control principle of sensitivity test is as shown in figure 5, host computer 1 opens sensitivity test module 3, and arranges sensitivity
The performance number of test radio frequency analog signal, controls sensitivity test module 3 to carry out sensitivity test, according to sensitivity test module
3 return value display sensitivity test radio frequency analog signal and the watt level of sensitivity test radiofrequency signal or sensitivity
Test radio frequency analog signal does not receive successfully.
The concrete steps of sensitivity test method include：
1) host computer 1 opens sensitivity test module 3.
2) host computer 1 control signal occurring source 3-1 produces initial sensitivity test radio frequency analog signal, and setting power is put
The echo signal watt level of big device 3-2；The scope of the performance number of sensitivity test radio frequency analog signal be -100dbm～
0dbm.
3) power amplifier 3-2 adjust watt level to desired value signal transmitting module 3-3 by sensitivity test radio frequency
Analog signal sends to tire pressure monitoring system ECU6 and receives monitoring modular 3-4.
4) tire pressure monitoring system ECU6 tests radiofrequency signal to receiving monitoring modular 3-4 feedback sensitivity.
5) reception monitoring modular 3-4 receives sensitivity test radiofrequency signal and then receives successfully, compares sensitivity test and penetrates
Frequency simulation letter and the watt level of sensitivity test radiofrequency signal, and return value is sent record to host computer 1, then to specify
Step-by-step adjustment watt level desired value return to step 3)；Receive monitoring modular 3-4 and do not receive sensitivity test radiofrequency signal
Then receive unsuccessful, the watt level that host computer 1 record last time is properly received is the minimum sensitivity of tire pressure monitoring system ECU6,
And show test result.
Basic function testing
As shown in figures 6 a and 6b, host computer 1 opens Basic function testing module to the flow chart of Basic function testing process
4, and sensor environment parameter is set, control Basic function testing module 4 adjust tire pressure monitoring system sensor 7 local environment to
Temperature, air pressure and the tyre accelerations specified, the return value according to Basic function testing module 4 is passed through to calculate this acceleration of detection
Whether the detection accuracy of lower tire pressure monitoring system sensor 7 is effective, whether sensor element is effective, tire pressure monitoring system ECU6's
Whether whether effective, tire pressure monitoring system ECU6 the function of part is effective, whether warning strategy is normal, then shows detection knot
Really.
The concrete steps of Basic function testing method include：
1) host computer 1 opens Basic function testing module 4.
2) host computer 1 arranges real-time vehicle tyre rotating speed, the pressure of tire of gas storage equipment 4-12 and the temperature of driving equipment 4-11
The temperature value of the tire of control equipment 4-13.
3) driving equipment 4-11, gas storage equipment 4-12 and temperature control device 4-13 receive the control of host computer 1 arrange parameter and require,
The tire rotary acceleration of regulation setting tire pressure monitoring system sensor 7 local environment, air pressure, temperature respectively.
4) radio frequency parsing module 4-22 parses the sensor environment radiofrequency signal that tire pressure monitoring system sensor 7 sends, system
Meter tire pressure monitoring system sensor 7 sends data frame number, and tire pressure, tire temperature value and data frame number are sent to host computer 1.
5) host computer 1 contrasts the actual rings being adjusted of driving equipment 4-11, gas storage equipment 4-12 and temperature control device 4-13
Border parameter value and entrained environmental information in the sensor environment radiofrequency signal of tire pressure monitoring system sensor 7 feedback, judge
Whether the precision of tire pressure monitoring system sensor 7 within rated value, is that detection accuracy effectively goes to next step, otherwise shows
Detection accuracy lost efficacy.
6) host computer 1 checks that tire pressure monitoring system sensor 7 sends data frame number whether in desired extent, is to sense
Device part effectively goes to next step, otherwise shows sensor failure.
7) bus data parsing module 4-21 parses the sensor environment bus signals that tire pressure monitoring system ECU6 sends, will
Tire pressure, tire temperature and reception sensing data frame number that tire pressure monitoring system ECU6 sends send to host computer 1.
8) host computer 1 contrasts sensor environment radiofrequency signal and the tire pressure monitoring system of tire pressure monitoring system sensor 7 feedback
The sensor environment bus signals of system ECU6 feedback, judge that the parsing of tire pressure monitoring system ECU6 data is whether effective, are then tire pressures
The part of monitoring system ECU6 effectively goes to next step, otherwise shows that tire pressure monitoring system ECU6 lost efficacy.
9) host computer 1 checks tire pressure monitoring system ECU6 frames received and tire pressure monitoring system sensor 7) send Frame
Whether number difference, in rated range, is that the function of tire pressure monitoring system ECU6 effectively goes to next step, otherwise shows tire pressure
Monitoring system ECU6 lost efficacy.
10) adjust the environmental simulation parameter in environment simulator respectively, including atmospheric pressure value, temperature value so as to exceed report
Alert threshold value.
11) whether the bus data analytic signal of host computer 1 monitoring tire pressure monitoring system ECU6 reports to the police, and is strategy of then reporting to the police
Effectively go to next step, otherwise display alarm strategy fails.
12) host computer 1 change vehicle tyre rotating speed, return to step 2).
Signal quality testing
The flow chart of signal quality testing is as shown in fig. 7, host computer 1 open signal quality test module 5 and basic function
Test module 4, and and temperature value in sensor environment parameter is set, signal quality testing module 5 receives tire pressure monitoring system
The signal quality radiofrequency signal that sensor 7 sends at such a temperature, host computer 1 is sentenced according to the radiofrequency signal returning under different temperatures
Break its centre frequency, frequency deviation region and performance number whether in design load, and draws signal quality curve, then show detection knot
Really.
The concrete steps of signal quality testing method include：
1) host computer 1 open signal quality test module 5 and Basic function testing module 4.
2) host computer 1 arranges the tire ambient temperature value of temperature control device 4-13, and spectrum analysis equipment 5-1 receives this temperature ring
Under border tire pressure monitoring system sensor 7 send signal quality radiofrequency signal and feed back to host computer 1.
3) host computer 1 records the test result of this temperature spot and its spectrum analyzer, exports to display terminal, according to test
Demand, if carry out signal quality testing under next temperature spot environment, if desired then goes to next step, the test scope of temperature
For -45 DEG C～125 DEG C.
4) centre frequency of signal quality testing module 5 measurement signal quality radiofrequency signal, and send to host computer 1.
5) frequency deviation of signal quality testing module 5 measurement signal quality radiofrequency signal, and send to host computer 1.
6) power of signal quality testing module 5 measurement signal quality radiofrequency signal, and send to host computer 1.
7) host computer 1 calculates centre frequency, frequency deviation and the performance number of signal quality radiofrequency signal whether in design load, letter
The centre carrier frequency of number quality radiofrequency signal is 433.92MHz；The frequency deviation region of signal quality radiofrequency signal is ± 45KHz；
The scope of the performance number of signal quality radiofrequency signal is -100dbm～0dbm.Host computer 1 is painted according to above-mentioned return value and design load
Frequency deviation processed and transmission power curve, and judge whether to the test of next temperature spot, are then return to step 2), otherwise test
Become.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (14)
1. a kind of comprehensive test device for tire pressure monitoring system, including host computer (1), programmable power supply (2) and test cell,
It is characterized in that：Described test cell includes sensitivity test module (3)；
Described host computer (1) is used for controlling the unlatching of operational blocks which partition system, setting and closing in test cell, receives described test cell
The return value of middle operational blocks which partition system outputs test result through calculating and shows；
Described programmable power supply (2) is used for according to the instruction of described host computer (1) to test cell and tire pressure monitoring system ECU (6)
Power supply；
The control that described sensitivity test module (3) is used for according to described host computer (1) sends to tire pressure monitoring system ECU (6)
Sensitivity test radio frequency analog signal simultaneously receives the sensitivity test radiofrequency signal that tire pressure monitoring system ECU (6) returns, and then will
Send reception condition and return to host computer (1).
2. the comprehensive test device for tire pressure monitoring system according to claim 1 it is characterised in that：Described test is single
Unit also includes Basic function testing module (4), and described Basic function testing module (4) is used for the control according to described host computer (1)
Set up and put tire pressure monitoring system sensor (7) ambient parameter, then receive the biography that described tire pressure monitoring system sensor (7) sends
The sensor environment bus signals that sensor ambient radio-frequency signal and described tire pressure monitoring system ECU (6) return, then return value is sent out
Deliver to host computer (1).
3. the comprehensive test device for tire pressure monitoring system according to claim 1 it is characterised in that：Described test is single
Unit also includes signal quality testing module (5), and described signal quality testing module (5) is used for the control according to described host computer (1)
System receives tire pressure monitoring system sensor (7) the signal quality radiofrequency signal that sends and sends return value to host computer (1).
4. the comprehensive test device for tire pressure monitoring system according to claim 1 it is characterised in that：Described sensitivity
Test module (3) includes signal generating source (3-1), power amplifier (3-2), signal transmitting module (3-3) and receives monitoring mould
Block (3-4), the control that described signal generating source (3-1) is used for according to described host computer (1) produces sensitivity test radio frequency analog
Signal, the control that described power amplifier (3-2) is used for according to described host computer (1) adjusts sensitivity test radio frequency analog signal
Power, described signal transmitting module (3-3) be used for sensitivity test radio frequency analog signal is sent to tire pressure monitoring system ECU
(6) and receive monitoring modular (3-4), described reception monitoring modular (3-4) is used for comparing sensitivity test radio frequency analog letter and spirit
Sensitivity tests the watt level of radiofrequency signal, and return value is sent to host computer (1).
5. the comprehensive test device for tire pressure monitoring system according to claim 2 it is characterised in that：Described basic training
Test module (4) data tire environment simulator (4-1) and parsing module (4-2), described tire environmental simulation dress can be included
Put (4-1) for control setting tire pressure monitoring system sensor (7) according to described host computer (1), described parsing module (4-2)
For receiving sensor environment radiofrequency signal and tire pressure monitoring system ECU (6) return that tire pressure monitoring system sensor (7) sends
Sensor environment bus signals and return value is sent to host computer (1).
6. the comprehensive test device for tire pressure monitoring system according to claim 3 it is characterised in that：Described signal matter
Amount test module (5) includes spectrum analysis equipment (5-1), and described spectrum analysis equipment (5-1) is used for receiving tire pressure monitoring system
Sensor (7) sending signal quality radiofrequency signal simultaneously sends return value to host computer (1).
7. the comprehensive test device for tire pressure monitoring system according to any one of claim 5 it is characterised in that：Institute
State tire environment simulator (4-1) and include driving equipment (4-11), gas storage equipment (4-12) and temperature control device (4-13).
8. the comprehensive test device for tire pressure monitoring system according to any one of claim 5 it is characterised in that：Institute
State parsing module (4-2) and include bus data parsing module (4-21) and radio frequency parsing module (4-22).
9. a kind of method of testing of the comprehensive test device for tire pressure monitoring system utilizing described in claim 1, its feature
It is：Methods described includes sensitivity test；
The step of described sensitivity test is：Described host computer (1) opens sensitivity test module (3), and arranges sensitivity survey
The performance number of examination radio frequency analog signal, controls sensitivity test module (3) to carry out sensitivity test, according to sensitivity test module
(3) return value display sensitivity tests the watt level of radio frequency analog signal and sensitivity test radiofrequency signal or sensitive
Degree test radio frequency analog signal does not receive successfully.
10. the method for testing of the comprehensive test device for tire pressure monitoring system according to claim 9, its feature exists
In：Described test cell also includes Basic function testing module (4), and methods described also includes Basic function testing；
The step of described Basic function testing is：Described host computer (1) opens Basic function testing module (4), and arranges sensing
Device ambient parameter, controls described Basic function testing module (4) to adjust tire pressure monitoring system sensor (7) local environment to specified
Value, the return value according to Basic function testing module (4) is passed through to calculate described tire pressure monitoring system sensing under this acceleration of detection
Whether the detection accuracy of device (7) is effective, whether data is activation is normal, whether sensor element is effective, described tire pressure monitoring system
Whether the function of ECU lost efficacy, whether warning strategy is normal, then showed testing result.
The method of testing of 11. comprehensive test devices for tire pressure monitoring system according to claim 10, its feature exists
In：Described test cell also includes signal quality testing module (5)；Methods described also includes signal quality testing；
The step of described signal quality testing is：Described host computer (1) open signal quality test module (5) and basic function are surveyed
Die trial block (4), and the temperature value in sensor environment parameter is set, control described signal quality testing module (5) to receive tire pressure
The signal quality radiofrequency signal that monitoring system sensor (7) sends at such a temperature, described host computer (1) is according under different temperatures
The radiofrequency signal returning judges its centre frequency, frequency deviation region and performance number whether in design load, and it is bent to draw signal quality
Line, then shows testing result.
The method of testing of 12. comprehensive test devices for tire pressure monitoring system according to claim 9, its feature exists
In：The scope of the performance number of described sensitivity test radio frequency analog signal is -100dbm～0dbm.
13. integrated test facilities for tire pressure monitoring system according to claim 10 it is characterised in that：Described sensing
Device ambient parameter includes vehicle tyre rotating speed, pressure of tire, temperature value.
The method of testing of 14. comprehensive test devices for tire pressure monitoring system according to claim 11, its feature exists
In：The centre carrier frequency of described signal quality radiofrequency signal for 433.92MHz, frequency deviation region ± 45KHz is and performance number
Scope is -100dbm～0dbm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449551A (en) * | 2017-09-04 | 2017-12-08 | 广东菲柯特电子科技有限公司 | Tire pressure sensor testing system and using method |
| CN107972423A (en) * | 2017-11-22 | 2018-05-01 | 广东菲柯特电子科技有限公司 | Testing system and method of tire monitoring system |
| CN109799033A (en) * | 2017-11-17 | 2019-05-24 | 巴特勒工程及营销股份公司 | Indirect pressure for testing or verifying wheel monitors the method and unit of system |
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