CN104483141A - System and method for wireless communication test of automobile passive entry and passive start system - Google Patents
System and method for wireless communication test of automobile passive entry and passive start system Download PDFInfo
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- CN104483141A CN104483141A CN201410834214.9A CN201410834214A CN104483141A CN 104483141 A CN104483141 A CN 104483141A CN 201410834214 A CN201410834214 A CN 201410834214A CN 104483141 A CN104483141 A CN 104483141A
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Abstract
The invention relates to a system and a method for the wireless communication test of an automobile passive entry and passive start system and provides a wireless communication test system for the automobile passive entry and passive start system. The wireless communication test system comprises a controller test system and a key test system, the wireless communication functions of a controller and a key of the automobile passive entry and passive starting system are tested by the test system designed in the invention, the wireless communication test is decomposed into the examination tests of two transmitters and two receivers, and the production eligibility of parts is ensured from the functional aspect. From the performance aspect, the reasonability and the accuracy of each communication parameter are ensured, and accordingly, the wireless communication stability of the PEPS (Passive Entry Passive Start) system is ensured.
Description
Technical field
The invention belongs to auto parts and components production field, relate to a kind of automobile no-key and to enter and without the radio communication detecting system of key start up system and method.
Background technology
Enter without key and without key start up system (PEPS system) car load configuration in very general.This system all can be installed in its high frequency vehicle by each famous brand depot, even in some brand vehicles, becomes standard configuration.Market capacity promotes further, and the parts manufacturer of this system of development & production also gets more and more.
The core technology of PEPS system is exactly wireless communication technology.When pressing door handle request switch or press next key starting switch, controller " low frequency transmitter " is by the band transmit verify data finding key of about 134KHz." LF receiver " of key is encrypted computing, result is sent to controller by " high frequency transmitter " with the frequency range of 433.9MHz after receiving low-frequency data.Controller receives the correctness of comparing result after encrypted result by " HF receiver ", if the request of result Correct is legal, and performs and unblocks accordingly or the action such as starting engine.
Above-mentioned radio communication is divided into two frequency ranges, relates to two kinds of transmitters and two kinds of receivers.The correct work of these parts is directly connected to the power supply of car load and the operation of engine, belongs to high safety grade requirement.Therefore ensure that the normal work of transmitter and receiver is particularly important, namely require that the coverage of finished product inspection and accuracy enough ensure the outgoing of parts.
Summary of the invention
In view of this, a kind of automobile no-key is the object of the present invention is to provide to enter and without the radio communication detecting system of key start up system and method, radio communication is decomposed into the checkout of two kinds of transmitters and two kinds of receivers, ensures the production qualification of parts from function aspects; Aspect of performance ensures rationality and the accuracy of each messaging parameter, thus ensures the radio communication stability of PEPS system.
An object of the present invention is to provide a kind of automobile no-key and enters and without the radio communication detecting system of key start up system; Two of object of the present invention is to provide a kind of automobile no-key and enters and without the radio communication method of testing of key start up system.
An object of the present invention is achieved through the following technical solutions:
A kind of automobile no-key provided by the invention enters and without the radio communication detecting system of key start up system, this system comprises controller test system and key test macro;
Described controller test system comprises controller, oscillograph, waveform generator, reception module, high frequency modulated demodulation board and antenna; Described controller produces low frequency signal, low frequency signal is launched by low frequency transmitting antenna, the low frequency signal that described oscillograph is launched for receiving controller, and the waveform of this low frequency signal is transmitted to host computer by USB port, host computer resolves this low frequency signal, draws test result;
Described waveform generator is for generation of high-frequency signal and launched by standard transmitting antenna, these high-frequency signal data are sent to host computer by USB port simultaneously, controller receives high-frequency signal, receive the data that module monitoring controller receives, and by high frequency modulated demodulation board, the data after demodulation are sent to host computer, the host computer contrast transmission data of waveform generator and the reception data of controller, draw test result;
Described key test macro comprises key, low frequency generator, frequency spectrograph and host computer; Described low frequency generator is for generation of low frequency signal and by the transmitting of standard low frequency field intensity generating coil, described key is positioned over low-frequency field strong production coil inside, and key receives low frequency signal; Adjust the signal intensity of expelling plate from small to large, until key can just receive data, this intensity is the receiving sensitivity of key; Key understands emission of high frequency signals after receiving low frequency signal, the high-frequency signal that described frequency spectrograph is launched for receiving key, and transmits it to host computer, and host computer resolves this high-frequency signal, draws test result.
Further, described controller and high frequency modulated demodulation board are positioned in shielded anechoic chamber or shielded box.
A kind of automobile no-key provided by the invention enters and without the radio communication method of testing of key start up system, this method of testing comprises LF communication test and high-frequency communication is tested; Described LF communication method of testing comprises the test of controller low frequencies and the test of key low frequency reception; Described high-frequency communication method of testing comprises the test of key high-frequency emission and the test of controller high-frequency reception.
Further, described controller low frequencies test comprises the following steps:
1) controller produces low frequency signal, and the frequency of described low frequency signal is 134KHz; Described low frequency signal is launched by low frequency transmitting antenna;
2) oscillograph receives the low frequency signal that controller is launched, and the waveform of this low frequency signal is transmitted to host computer by USB port;
3) host computer procedure goes out the centre frequency of low frequencies, emissive porwer and data layout by wave analysis, judges the correctness of transmitted waveform.
Further, described key low frequency reception test comprises the following steps:
1) low frequency generator produces the signal of 134KHz, the intensity adjustable of described signal, and data layout is identical with product data form; Signal is launched by standard low frequency field intensity generating coil;
2) key is positioned over the inside of described coil, key receives low frequency signal;
3) adjust the signal intensity of expelling plate from small to large, until key can just receive data, this intensity is the receiving sensitivity of key.
Further, described key high-frequency emission test comprises the following steps:
1) key meeting emission of high frequency signals while receiving low frequency signal, the frequency of described high-frequency signal is 433.9MHz, and intensity is 0dBmV;
2) frequency spectrograph receives the high-frequency signal that key is launched, and described frequency spectrograph is placed on fixed position, and after frequency spectrograph receives the high-frequency signal of key transmitting, the waveform transmitted by key by USB line is sent to host computer;
3) host computer procedure resolves transmission frequency and the intensity that this waveform obtains key, judges whether to meet product design requirement.
Further, described controller high-frequency reception test comprises the following steps:
1) waveform of waveform generator modulation FSK is launched by standard transmitting antenna, and the frequency of described waveform is 433.9MHz, and intensity is the minimum strength that controller receives, and data layout is identical with product data form; Described waveform generator is sent to host computer by USB port signal data simultaneously;
2) controller receives high-frequency signal;
3) receive the data that module monitoring controller receives, and by high frequency modulated demodulation board, the data after demodulation are sent to host computer; The host computer contrast transmission data of waveform generator and the reception data of controller, calculate the bit error rate, it is qualified that the bit error rate is less than this controller receiver sensitivity of 0.5% expression.
Beneficial effect of the present invention is: a kind of automobile no-key provided by the invention enters and without the radio communication detecting system of key start up system and method, to enter by adopting automobile no-key provided by the present invention and without the radio communication detecting system of key start up system, automobile no-key is entered and tests without the controller of key start up system and the radio communication function of key, radio communication is decomposed into the checkout of two kinds of transmitters and two kinds of receivers, ensures the production qualification of parts from function aspects; Aspect of performance ensures rationality and the accuracy of each messaging parameter, thus ensures the radio communication stability of PEPS system.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is controller low frequencies high-frequency reception measurement system diagram;
Fig. 2 is key low frequency reception high-frequency emission measurement system diagram.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
A kind of automobile no-key provided by the invention enters and without the radio communication detecting system of key start up system, this system comprises controller test system and key test macro;
As shown in Figure 1, described controller test system comprises controller, oscillograph, waveform generator, reception module, high frequency modulated demodulation board and antenna; Shown controller produces low frequency signal, low frequency signal is launched by low frequency transmitting antenna, the low frequency signal that described oscillograph is launched for receiving controller, and the waveform of this low frequency signal is transmitted to host computer by USB port, host computer resolves this low frequency signal, draws test result.
Described waveform generator is for generation of high-frequency signal and launched by standard transmitting antenna, these high-frequency signal data are sent to host computer by USB port simultaneously, controller receives high-frequency signal, receive the data that module monitoring controller receives, and by high frequency modulated demodulation board, the data after demodulation are sent to host computer, the host computer contrast transmission data of waveform generator and the reception data of controller, draw test result; Described controller and high frequency modulated demodulation board are positioned in shielded anechoic chamber or shielded box.
As shown in Figure 2, described key test macro comprises key, low frequency generator, frequency spectrograph and host computer; Described low frequency generator is for generation of low frequency signal and by the transmitting of standard low frequency field intensity generating coil, described key is positioned over low-frequency field strong production coil inside, and key receives low frequency signal; Adjust the signal intensity of expelling plate from small to large, until key can just receive data, this intensity is the receiving sensitivity of key; Key understands emission of high frequency signals after receiving low frequency signal, the high-frequency signal that described frequency spectrograph is launched for receiving key, and transmits it to host computer, and host computer resolves this high-frequency signal, draws test result.
A kind of automobile no-key provided by the invention enters and without the radio communication method of testing of key start up system, this method of testing comprises LF communication test and high-frequency communication is tested; Described LF communication method of testing comprises the test of controller low frequencies and the test of key low frequency reception; Described high-frequency communication method of testing comprises the test of key high-frequency emission and the test of controller high-frequency reception.
Controller low frequencies method of testing, comprises the following steps: 1) low frequency signal launched by controller, and the frequency of described low frequency signal is 134KHz; 2) low frequency signal is launched by low frequency transmitting antenna, and low frequency transmitting antenna is fixed in frock, places oscillograph, directly the waveform of low-frequency data is transmitted to host computer by USB port after oscillograph receives low-frequency data in fixed position; 3) host computer procedure can by the centre frequency of waveform Directly solution precipitation low frequencies, emissive porwer and data layout.Host computer procedure judges the correctness of transmitted waveform.
Key low frequency reception method of testing comprises the following steps: 1) homemade low frequency generator can produce the waveform of 134KHz, intensity adjustable, and data layout is identical with product data form; Data are launched by standard low frequency field intensity generating coil, and coil has another name called " Hull this coil of ink " (" H coil " in figure), and the low frequency field intensity of generation is identical everywhere therein.2) key is positioned over coil inside, receives data.3) adjust the signal intensity of expelling plate, from small to large, until key can just receive data, this intensity is exactly the receiving sensitivity of key.
Key high-frequency emission method of testing comprises the following steps: 1) key meeting emission of high frequency signals while receiving low frequency signal, frequency 433.9MHz, intensity 0dBmV.2) place frequency spectrograph in fixed position, receive the waveform that key occurs.The transmitted waveform of key is returned to host computer by USB line by frequency spectrograph; 3) host computer procedure resolves transmission frequency and the intensity that waveform just can obtain key, judges whether to meet product design requirement.
Controller high-frequency reception method of testing comprises the following steps: the 1) waveform of waveform generator modulation FSK, frequency is 433.9MHz, and intensity is the minimum strength that controller receives, and the data during data work with PEPS are identical.Waveform generator is transmitted to host computer by USB port data simultaneously simultaneously; 2) frock secures standard transmitting antenna, be responsible for the data sending waveform generator, controller is fixed in frock.Receive the data that module monitoring controller receives, and the data after demodulation are sent to host computer.3) data of host computer procedure contrast transmission and reception, and calculate the bit error rate, bit error rate < 0.5% represents that this controller receiver sensitivity is qualified.
After having tested, whether host computer can show " PASS " " FAIL " printed words and remind this test of direct labor to pass through.Also can, by lighting the mode of LED or driving hummer, remind this test of direct labor whether qualified.Parameter and standards all in test all meets the communicating requirement in PEPS work, and different PEPS system can have different parameter requests.This test platform by the mode of configuration host computer procedure, can meet these and judges requirement.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (7)
1. automobile no-key enters and without the radio communication detecting system of key start up system, it is characterized in that: this system comprises controller test system and key test macro;
Described controller test system comprises controller, oscillograph, waveform generator, reception module, high frequency modulated demodulation board and antenna; Described controller produces low frequency signal, low frequency signal is launched by low frequency transmitting antenna, the low frequency signal that described oscillograph is launched for receiving controller, and the waveform of this low frequency signal is sent to host computer by USB port, host computer resolves this low frequency signal, draws test result;
Described waveform generator is for generation of high-frequency signal and launched by standard transmitting antenna, and these high-frequency signal data are sent to host computer by USB port by waveform generator simultaneously; Controller receives high-frequency signal, receives the data that module monitoring controller receives, and by high frequency modulated demodulation board, the data after demodulation is sent to host computer; The host computer contrast transmission data of waveform generator and the reception data of controller, draw test result;
Described key test macro comprises key, low frequency generator, frequency spectrograph and host computer; Described low frequency generator is for generation of low frequency signal and by the transmitting of standard low frequency field intensity generating coil, described key is positioned over low-frequency field strong production coil inside, and key receives low frequency signal; Key understands emission of high frequency signals after receiving low frequency signal, the high-frequency signal that described frequency spectrograph is launched for receiving key, and transmits it to host computer, and host computer resolves this high-frequency signal, draws test result.
2. a kind of automobile no-key according to claim 1 enters and without the radio communication detecting system of key start up system, it is characterized in that: described controller and high frequency modulated demodulation board are positioned in shielded anechoic chamber or shielded box.
3. automobile no-key enters and without the radio communication method of testing of key start up system, it is characterized in that: this method of testing comprises LF communication test and high-frequency communication is tested; Described LF communication method of testing comprises the test of controller low frequencies and the test of key low frequency reception; Described high-frequency communication method of testing comprises the test of key high-frequency emission and the test of controller high-frequency reception.
4. a kind of automobile no-key according to claim 3 enters and without the radio communication method of testing of key start up system, it is characterized in that: described controller low frequencies test comprises the following steps:
1) controller produces low frequency signal, and the frequency of described low frequency signal is 134KHz; Described low frequency signal is launched by low frequency transmitting antenna;
2) oscillograph receives the low frequency signal that controller is launched, and the waveform of this low frequency signal is transmitted to host computer by USB port;
3) host computer procedure goes out the centre frequency of low frequencies, emissive porwer and data layout by wave analysis, judges the correctness of transmitted waveform.
5. a kind of automobile no-key according to claim 3 enters and without the radio communication method of testing of key start up system, it is characterized in that: described key low frequency reception test comprises the following steps:
1) low frequency generator produces the signal of stable 134KHz, the intensity adjustable of described signal, and data layout is identical with product data form; Signal is launched by standard low frequency field intensity generating coil;
2) key is positioned over the inside of described coil, key receives low frequency signal;
3) adjust the signal intensity of expelling plate from small to large, until key can just receive data, this intensity is the receiving sensitivity of key.
6. a kind of automobile no-key according to claim 3 enters and without the radio communication method of testing of key start up system, it is characterized in that: described key high-frequency emission test comprises the following steps:
1) key meeting emission of high frequency signals while receiving low frequency signal, the frequency of described high-frequency signal is 433.9MHz, and intensity is 0dBmV;
2) frequency spectrograph receives the high-frequency signal that key is launched, and described frequency spectrograph is placed on fixed position, and after frequency spectrograph receives the high-frequency signal of key transmitting, the waveform transmitted by key by USB line is sent to host computer;
3) host computer procedure resolves transmission frequency and the intensity that this waveform obtains key, judges the correctness of transmitted wave.
7. a kind of automobile no-key according to claim 3 enters and without the radio communication method of testing of key start up system, it is characterized in that: described controller high-frequency reception test comprises the following steps:
1) waveform of waveform generator modulation FSK is launched by standard transmitting antenna, and the frequency of described waveform is 433.9MHz, and intensity is the minimum strength that controller receives, and data layout is identical with product data form; Described waveform generator is sent to host computer by USB port signal data simultaneously;
2) controller receives high-frequency signal;
3) receive the data that module monitoring controller receives, and by high frequency modulated demodulation board, the data after demodulation are sent to host computer; The host computer contrast transmission data of waveform generator and the reception data of controller, calculate the bit error rate, it is qualified that the bit error rate is less than this controller receiver sensitivity of 0.5% expression.
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| CN201410834214.9A CN104483141B (en) | 2014-12-29 | 2014-12-29 | A kind of automobile no-key enters and radio communication detecting system and method without key activation system |
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| CN111865443A (en) * | 2020-07-27 | 2020-10-30 | 延锋伟世通汽车电子有限公司 | Calibrating device suitable for car intelligence does not have key access system |
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Cited By (8)
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| CN111865443A (en) * | 2020-07-27 | 2020-10-30 | 延锋伟世通汽车电子有限公司 | Calibrating device suitable for car intelligence does not have key access system |
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