CN110336628A - A kind of BCM reception signal testing method - Google Patents
A kind of BCM reception signal testing method Download PDFInfo
- Publication number
- CN110336628A CN110336628A CN201910725780.9A CN201910725780A CN110336628A CN 110336628 A CN110336628 A CN 110336628A CN 201910725780 A CN201910725780 A CN 201910725780A CN 110336628 A CN110336628 A CN 110336628A
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- China
- Prior art keywords
- bcm
- signal
- remote
- code
- signal generator
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C25/00—Arrangements for preventing or correcting errors; Monitoring arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
Abstract
A kind of BCM reception signal testing method, for the test method the following steps are included: BCM to be measured is put into jig, BCM remote control signal receiver circuit is set as pairing mode of learning；By setting signal generator, so that the pairing learning code of signal generator transmitting remote-control key；If pairing learning code and the BCM successful matching of signal generator transmitting, signal generator continue to emit unlocking code and interlock code；If BCM open and close is locked successfully, BCM test passes.The jig for placing BCM is placed in a shielded box, so that remote signal will not generate interference to external equipment.Remote signal is emitted in shielded box by signal generator by antenna.
Description
Technical field
The invention belongs to automobile technical field, in particular to a kind of BCM receives signal testing method, and signal here refers to
The remote signal of automobile key.
Background technique
Automobile remote-control key, can be with lifting glass window for unlocking and being latched to arrangements for automotive doors at a distance.These are seemed
Simple function brings great convenience to user.Such as after automobile flameout, user can be with long-pressing automobile remote-control key
The vehicle window etc. of blocking wedge closing automobile.
Automobile remote-control function is completed by transmitter and receiver two parts.Transmitter in remote-control key by emission switch,
The composition such as transmitting antenna (keypad), integrated circuit, includes cognizance code store loop and amplitude-modulating modulation circuit, and in the phase of circuit
Anti- side is equipped with the lithium battery of snapper type.The tranmitting frequency of remote-control key transmitter is 433MHz, and the every snapper of emission switch is primary
A signal is carried out to send.After remote-control key transmitter issues cognizance code using shortwave modulation, receiver passes through automobile
Short-wave antenna is received, and is solved using the shortwave high frequency amplification processor that distributor enters receiver electronic control unit
It adjusts, is compared with the cognizance code for being demodulated device, if it is correct code, with regard to input control circuit and makes actuator work
Make.Can receiver board of the BCM (english abbreviation of car body control module) with the receiver carried be to be properly received remote-control key transmitting
Signal unique key part.
The intensity of remote-control key transmitting signal is an important indicator for determining to receive distance, and transmission power is stronger,
Signal transmission it is remoter, the operation for the user that is more convenient for it is convenient.Now major part automobile BCM receive distance all 25 meters with
On.If it is poor that BCM receives ability, it is unable to satisfy the demand of user, so BCM receptivity is also the important parameter of BCM,
But the performance can not be by conventional electrical property signal come the method for achieving a solution.
Test for BCM receptivity, many BCM manufacturers use host computer provided by signal generator at present
Software is operated manually test.Test requires match learning code, unlocking key, is latched key and turns as requested every time
It is changed to Manchester code to be input in signal generator, then by the key above signal generator operation panel, is referred to
Specification and operation manual remove successively key selection pairing learning code file as required, set tranmitting frequency and output signal is strong
It spends (analog telecommand key is at a distance from BCM), unlocking key and locking key is then successively sent according still further to the method, is then gone
Whether detection BCM door-lock motor and turn signal correctly export, and judge whether BCM product is qualified.The shortcomings of doing so it is obvious that
It is exactly cumbersome, the case where manual operation will appear maloperation, seriously affects production efficiency and test accuracy.
For example, certain testing scheme is to test in two sub-sections.First in FET (electric performance test), control remote controler into
Row pairing study, then controls unlocking key and blocking wedge, detect BCM turn signal and door-lock motor output therefore, it is determined that BCM whether
Remote controller signal can be properly received.There are two disadvantage, first is that remote-control key and BCM distance are close for this test, cannot be detected
It receives distance.Second is to interfere with each other, because remote controler transmission power is stronger, generally can reach 30 meters or more, exists in this way
In every 900 square metres of the place in workshop, there can only be a FET equipment can be with production test, if there are two and more simultaneously
Equipment works at the same time, and can inevitably receive the remote-control key sending of other equipment by mistake when they test to distant control function
Pairing code is practised, causes to mismatch pair, equipment erroneous judgement is eventually led to and thinks that product test is unqualified, influence efficiency.Because of company's BCM class
Product category is numerous, in order not to generate the case where interfering with each other, it is necessary to assure can only have a FET test to set in 900 square metres
It is standby that product is tested, because place limits, enough place spaces can not be provided and go more FET equipment while testing not of the same race
The BCM product of class seriously affects production capacity, and tester wants to work in three shifts for 24 hours could complete test shipment task reluctantly.
After first of FET test, reception distance cannot be tested out, so also to carry out second draws distance test,
Same to interfere with each other because of multi-remote-controller, the test of this road needs to carry out in other plant building, this will transport product
It is tested to specified workshop.The method of test is that both remote controler and tested BCM are placed at a distance from 25 meters, wherein one man operation
Remote controller key, in addition a people draws in BCM and observes test result on distance test host, and it is to be tested to replace next need
BCM product, this method equally cause the limitation in waste of human resource and space, lead to low efficiency.
Summary of the invention
A kind of BCM provided by the invention receives signal testing method, it is therefore an objective to existing for BCM reception electricity for solving
The problem of signal on road receives test in process of production, and test is cumbersome, inefficiency.
One of the embodiment of the present invention, a kind of BCM receive signal testing method, the test method the following steps are included:
BCM to be measured is put into jig, and the jig for placing BCM is placed in a shielded box, so that remote signal will not
Interference is generated to external equipment,
BCM remote control signal receiver circuit is set as pairing mode of learning；
By setting signal generator, so that the pairing learning code of signal generator transmitting remote-control key；
If pairing learning code and the BCM successful matching of signal generator transmitting, signal generator, which continues transmitting, unlocks
Code and interlock code；
If BCM open and close is locked successfully, BCM test passes.
The present invention achieves the improvement of the testing scheme of BCM remote signal that versatility is stronger, more efficient, false failure rate
There is easy to use, automatic control to interfere with each other with judgement, anti-stop signal, integrate process, save cost, opening for lower effect
The features such as sending out quick.
Detailed description of the invention
The following detailed description is read with reference to the accompanying drawings, above-mentioned and other mesh of exemplary embodiment of the invention
, feature and advantage will become prone to understand.In the accompanying drawings, if showing by way of example rather than limitation of the invention
Dry embodiment, in which:
Fig. 1 according to embodiments of the present invention one of BCM signal receive test platform composition schematic diagram.
Fig. 2 according to embodiments of the present invention one of BCM signal testing flow chart.
Specific embodiment
According to one or more embodiment, as shown in Fig. 2, a kind of BCM receives signal testing method, the test method packet
Include following steps:
BCM to be measured is put into jig, sets pairing mode of learning for BCM remote control signal receiver circuit by single-chip microcontroller；
By setting signal generator, so that the pairing learning code of signal generator transmitting remote-control key；
If pairing learning code and the BCM successful matching of signal generator transmitting, signal generator, which continues transmitting, unlocks
Code and interlock code；
If BCM open and close is locked successfully, BCM test passes.Wherein,
The jig for placing BCM is placed in a shielded box, so that remote signal will not generate interference to external equipment.
Remote signal is emitted in shielded box by signal generator by antenna.
Signal generator is configured by local area network using industrial personal computer, is remotely controlled according to specified frequency and power emission
Pairing learning code, unlocking code and the interlock code of key.
According to one or more embodiment, as shown in Figure 1, a kind of BCM receives signal testing platform, including industrial personal computer,
Single-chip microcontroller controls cabinet, shielded box, signal generator (Luo De Schwarz) and jig, industrial personal computer, single-chip microcontroller control cabinet, shielding
Case, signal generator and jig, which are tiled, to be mounted on a board.
Single-chip microcontroller controls cabinet, completes the action control (cylinder movement) of board by RS232 serial communication with industrial personal computer,
Such as shield the open and close of chamber door；Test fixture clamps test product, contacts test product lead-out wire simultaneously with jig thimble
Fixed test product；There is provided input signal by tested product, (such as ignition signal, drivers' switching signal, key are inserted into signal
Deng), judge BCM product whether test passes (detection test product door-lock motor output and turn signal output signal).
Industrial personal computer writes upper computer software with Labview, with single-chip microcontroller control cabinet by RS232 serial communication, completes
The action control of board.Industrial personal computer is connect with signal generator by Ethernet, and (this is encoded to Manchester to coding of controls
Code, analog telecommand key unlocking key and locking key) and emit different frequency and intensity signal.
Shielded box, test product are placed in fixture, place into shielded box test, remote signal is made to will not influence other products
Proper testing.Shielded box is the main body for carrying jig and test product.The signal that signal generator issues is isolated from the outside.
Signal generator writes remote-control key code (pairing learning code, unlocking code, interlock code), sends shielding for the code
In case, test product is allowed to receive remote-control key signal.
Jig carries the dedicated carrier of test product.
Board carries the main structure of above five parts, constitutes entire Meter Test system.Board is entire tester
The frame of table, all unit modules are both placed on board, and board provides power supply and gas source to all unit modules.
The test process of the test platform system includes:
S01, industrial personal computer write Labview serial communication control program, control board movement, inspection by unilateral machine control cabinet
Survey BCM product output signal and discriminating test result.
S02, industrial personal computer write Labview by Ethernet control signal generator generation key code signal and according to specified
Frequency and intensity are automatically sent out.
Signal is emitted in shielded box by S03, signal generator by dedicated antenna.
S04, shielded box carry the jig of test product, and the product for testing other model if necessary only needs replacing jig
?.
According to one or more embodiment, BCM signal test system mainly includes industrial personal computer, and single-chip microcontroller controls cabinet,
Shielded box, signal generator (Luo De Schwarz), jig and six part of board composition.
Signal generator can automatically control.Signal generator uses Luo De Schwarz brand, to pass through the instrument in the past
The remote-control key code for emitting certain frequency, first has to write Manchester according to the communications protocol between remote-control key and BCM
Code, this yard is copied in the memory of instrument with USB flash disk, and when use will be operated using the key of the instrument, selection key code
And tranmitting frequency and transmission power, one product of every test will emit pairing learning code, unlocking key and locking key, calculate
Getting off will operate repeatedly three times, so will increase the testing time, also mistake easy to operate；We survey this set general-purpose platformization
Key code is converted to graceful by test system, the program that will use Labview software programming on industrial personal computer automatically by Ethernet
Che Site code, and being saved in signal generator, then can transfer the pins automatically, according to it is required occur flat rate and
Transmission power sends remote-control key code.Testing efficiency can be greatly improved in this way, while being automatically controlled and also being can avoid manually
A possibility that operating mistake brought by controlling.
The BCM signal test system versatility of the present embodiment is high, and the test all-purpose platform with remote-control key shielded box fills
The case where dividing in view of compatible different product.In general, what BCM response remote-control unlocking was latched shows as turn signal flashing and door
Motor operation is locked, BCM is matched with remote-control key needs ignition signal and driver's closing and opening side doors signal, so.Universal test is flat
These signal resources can be assigned in system and reserve a certain number of standby resources again by platform.Each product is write with Labiew
A set of upper computer software, correspondence do a jig, and according to the definition of these resources of general-purpose platform, BCM is needed to the signal connected
Wiring connection, tests different products every time, it is only necessary to which the jig replaced pair simultaneously selects corresponding upper computer software, other are hard
Part remains unchanged, and can save the development cost of common portion in this way, reduces the development time.
The remote-control key shielded box test all-purpose platform is to be put into BCM in shielded box by jig, then will be remotely controlled key
Spoon signal is transmitted in shielded box by signal generator, and transmission power can be changed, and is changed transmission power and is equivalent to
Change the distance of remote-control key transmitting signal, then the output signal of single-chip microcontroller cabinet detection door-lock motor and turn signal, from
And judge whether BCM distant control function under the transmission power is qualified.
Traditional test needs for be divided into this part two pacings examination, and first in FET electric performance test, matching one is actual
Remote-control key, with tested BCM coupling learning, instrument controls unlocking and the locking key of remote-control key, detects turn signal and door
The output for locking motor, determines whether qualification, and whether the function that this pacing examination can only test remote control is normal, is unable to test b CM reception
Whether distance reaches requirement.Second step seeks to testing time BCM and receives whether distance meets the requirements, by taking 25 meters of distances as an example,
Remote-control key and BCM are maintained at a distance from 25 meters first, unlocking and locking key of the personal responsibility by key, in addition one
Individual demand replaces product in the side BCM, starts test next time.The plateform system can greatly save testing efficiency and subtract in contrast
It is few artificial, two tests are combined into one, and form automatic test and judgement, scheme is excellent, easy to operate, save the time and
Expense, and save product and replace some unpredictalbe accidents occurred in test site transportational process between the test of this twice
Situation.
Shielded box test can anti-stop signal interfere with each other, the BCM of the present embodiment is finally to be put into shielded box by jig
In carry out test survey, signal frees the signal of device sending through connection antenna loading into shielded box, this signal is just in this way
It can propagate, will not spread out in the shielding phase, solve the problems, such as that multiple signals interfere with each other, so, so that it may
It concentrates in together, multiple products are tested simultaneously, substantially increase production efficiency, reduce cost of labor.Due to that can be opened with a key
It is dynamic, judge automatically result, it is only necessary to a tester.
It includes Nanjing iveco, Jiangxi that the measured result data of the present embodiment, which include: for the product applied at present,
Isuzu Motors, lucky, more than 20 kinds of BCM products such as bell difficult to understand and Shanghai Volkswagen, if you need to increase new product, as long as doing a jig and volume
Write a set of upper computer software.Through operation after a period of time, effect brought by reality is as follows:
1. shortening the testing time.Testing time can be shorten to from original 3 minutes by present 20 seconds using the program
Clock, testing time are original 11%.
2. saving space.After the program, the space that each test position needs is 3.5 square metres, needs 900 originally
Square metre (preventing signal interference) is original 0.4%.
3. saving cost.After this programme, by calculating, the testing cost of each product (including labour cost, water power
Take, traffic expense and administration fee) it is 0.21 yuan, it is original 5.1%. that old scheme originally, which is 4.05 yuan of each product,.
4. test accuracy rate is high: using after this programme, false failure rate 0.05%, pervious old scheme is due to needing excessively
Manual operation, false failure rate are that 4.4%. is original 1.1%.
It is worth noting that although foregoing teachings are by reference to several essences that detailed description of the preferred embodimentsthe present invention has been described creates
Mind and principle, it should be appreciated that, the invention is not limited to the specific embodiments disclosed, the division also unawareness to various aspects
Taste these aspect in feature cannot combine, it is this divide merely to statement convenience.The present invention is directed to cover appended power
Included various modifications and equivalent arrangements in the spirit and scope that benefit requires.
Claims (4)
1. a kind of BCM receives signal testing method, which is characterized in that the test method the following steps are included:
BCM to be measured is put into jig, and BCM remote control signal receiver circuit is set as pairing mode of learning；
By setting signal generator, so that the pairing learning code of signal generator transmitting remote-control key；
If signal generator transmitting pairing learning code and BCM successful matching, signal generator continue emit unlocking code and
Interlock code；
If BCM open and close is locked successfully, BCM test passes.
2. BCM according to claim 1 receives signal testing method, which is characterized in that the jig for placing BCM is placed on
In one shielded box, so that remote signal will not generate interference to external equipment.
3. BCM according to claim 2 receives signal testing method, which is characterized in that signal generator will by antenna
Remote signal is emitted in shielded box.
4. BCM according to claim 2 receives signal testing method, which is characterized in that signal is occurred by local area network
Device is configured, according to the pairing learning code of specified frequency and power emission remote-control key, unlocking code and interlock code.
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| CN111162846A (en) * | 2019-12-29 | 2020-05-15 | 上海诺为科技有限公司 | Radio frequency performance detection method of page turning pen |
| CN115134009A (en) * | 2022-06-28 | 2022-09-30 | 上海沪工汽车电器有限公司 | Car BCM remote control signal detecting system |
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Application publication date: 20191015 |