CN109541354A - A kind of ignition coil multiple-unit intelligent test system and its test method - Google Patents
A kind of ignition coil multiple-unit intelligent test system and its test method Download PDFInfo
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- CN109541354A CN109541354A CN201811491316.XA CN201811491316A CN109541354A CN 109541354 A CN109541354 A CN 109541354A CN 201811491316 A CN201811491316 A CN 201811491316A CN 109541354 A CN109541354 A CN 109541354A
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a kind of ignition coil multiple-unit intelligent test system and its test methods, N number of tested ignition coil shares a programmable power supply and carries out timesharing driving, corresponding N number of tested ignition coil setting data sampling unit and capture card, each capture card is electrically connected each data sampling unit respectively, and host computer communicates to connect slave computer and capture card.It realizes ignition coil to test automatically and its intelligent decision, avoids artificial erroneous judgement and fail to judge, the accuracy of test greatly improved, judging nicety rate is increased to 100% by artificial 98%.The work load of test job is alleviated to essence, while improving testing efficiency；It realizes set of system while multiple ignition coils is tested, further improve testing efficiency, reduce the investment of test equipment.
Description
Technical field
The present invention relates to the tests of automobile ignition coil.
Background technique
Important component of the ignition coil as engine system, the parameters of property relationship to engine system refer to
Mark.There are following drawbacks for the automobile Ignition Coil Measuring System that the prior art uses: one can only test single product one by one and cause to imitate
Rate is low；Second, need artificial observation waveform and numerical value judge product quality, tester be easy because fatigue and
Generate erroneous judgement；And the unconspicuous negative characteristics of ignition coil are easy to appear and are failed to judge, such as coil inside paradoxical discharge phenomenon
Reaction on oscillograph can only be present in a flash, and just it is easy to appear situations of manually failing to judge.
Summary of the invention
In order to solve above-mentioned drawback, the technical problem to be solved by the invention is to provide a kind of test systems of ignition coil
System can simultaneously test multiple ignition coils and judge automatically product quality.In order to solve the above-mentioned technical problem, of the invention
The technical solution adopted is that a kind of ignition coil multiple-unit intelligent test system, which is characterized in that N number of tested ignition coil is total
Timesharing driving, corresponding N number of tested ignition coil setting data sampling unit and capture card are carried out with a programmable power supply, it is each to acquire
Card is electrically connected each data sampling unit respectively, and host computer communicates to connect slave computer and capture card:
Host computer includes test parameter setter and test data contrast device;The setting range of test parameter setter includes: to set
Programmable power supply supply voltage is set, the ignition pulse width, spark rate and testing time of slave computer are set, normal data, setting are set
Capture card parameter；The data that capture card conveys are compared with normal data automatically for test data contrast device；
Slave computer includes signal generator, and signal generator generates the road N PWM (frequency Pulse Width is adjustable) signal, the phase of each road signal
360/N ° of phase difference, pwm signal is isolated using high speed photo coupling, after amplification, constant pressure, constant-current circuit processing, is respectively supplied to N
A tested ignition coil constitutes the timesharing driving as IGT signal (ignition control signal)；Slave computer be additionally provided with test by
(each group indicator light shows the test result of each tested ignition coil respectively, for example, when product is bad for button and the road N indicator light
Red light is bright, test passes green light)；
Under the collective effect of programmable power supply and IGT signal, N number of tested ignition coil work generates corresponding data, by N number of number
Data sampling processing is carried out according to sampling unit, the collected card of sampled data acquires and is sent to host computer.
Card is collected after data sampling to collect；Capture card sends the data to host computer；The data that host computer will receive
It is compared, judges whether product is qualified, and indicated with red green indicator light.
A kind of ignition coil multiple-unit intelligent test method, includes the following steps:
Step 1, before first test, host computer progress test parameter setting, including supply voltage, ignition pulse width, spark rate,
Testing time, normal data, capture card parameter: supply voltage parameter is sent to programmable power supply by serial ports by host computer, test
When programmable power supply according to parameter export needed for voltage；Host computer is sent ignition pulse width parameter, spark rate parameter by serial ports
To slave computer, slave computer exports IGT signal according to parameter when test；Capture card parameter is sent to acquisition by serial ports by host computer
Card, capture card are configured to adapt to the testing requirement of this system according to parameter；
Step 2, presses testing button, and slave computer sends the instruction of " starting to test " to host computer by serial ports；Slave computer simultaneously
The road N PWM (frequency Pulse Width is adjustable) signal, 360/N ° of the phase phase difference of each road signal are generated, signal is isolated by high speed photo coupling, is put
Greatly, after constant pressure, constant-current circuit processing, the road N signal is respectively supplied to N number of tested ignition coil as IGT signal, so that N number of quilt
It surveys ignition coil and shares a programmable power supply progress timesharing driving；
Step 3, under the common driving of programmable power supply and IGT signal, N number of tested ignition coil is started to work.Due to the road N IGT
The phase of signal differs 360/N ° respectively, so a programmable power supply can drive N number of ignition coil simultaneously and not interfere with each other；
Step 4 is tested ignition coil work and generates corresponding data, is collected card after data sampling and collects；
Step 5, host computer send command adapted thereto to capture card after receiving the instruction of " starting to test ", and capture card starts to acquire,
The data of acquisition are carried out A/D conversion by capture card, are sent to host computer with string data；
Step 6, host computer handle string data income, are converted to array data；Preferably, host computer is by array data
Dimensional waveform is converted to be shown on computer screen.Dimensional waveform is convenient for human assistance observation.
Array data is compared with normal data for step 7, host computer, the normal data be selected from following data it
One, it 1. uses the tested ignition coil operational data got for the first time as normal data, is 2. surveyed with ignition coil standard sample
The data of examination are preserved as normal data；
The deterministic process of array data: normal data is asked poor with array data, and seeks absolute value, obtains difference data；It searches
The maximum value of difference data, if maximum value is not in setting error range, host computer is ceased and desisted order under by serial ports transmission
Position machine, allows tested ignition coil to stop working, slave computer shiny red indicator light, determines that tested ignition coil does not meet test and wants
It asks；If maximum value, continues to test within the set range, arrived until the testing time of setting, the maximum value still exists
It is arranged in range, host computer is ceased and desisted order by serial ports transmission to slave computer, slave computer bright green indicator light, determines tested igniting
Coil meets test request；This test terminates.
Coil inside paradoxical discharge data have jumping characteristic with randomness, and based on this feature, we carry out intelligence in fashion described above
It can judgement.
The beneficial effects of the present invention are realize ignition coil and test automatically and its intelligent decision, avoid artificial mistake
Sentence and fail to judge, the accuracy of test greatly improved, judging nicety rate is increased to 100% by artificial 98%.Alleviate to essence
The work load of test job, while improving testing efficiency；It realizes set of system while multiple ignition coils is surveyed
Examination, further improves testing efficiency, reduces the investment of test equipment.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited by the specific embodiments disclosed below.
Detailed description of the invention
Fig. 1 is working-flow schematic diagram.
Specific embodiment
Referring to attached drawing, reflect a kind of specific structure of the invention.The industrial computer that this routine host computer uses, is equipped with
Labview language, and it is encoded with VI program；The general source DS1102E oscillograph that capture card uses；The STM32 that slave computer uses is mono-
Piece machine is embedded with C programmer.Its workflow is as follows:
1, before first test, host computer sets each test parameter.Settable multiple test parameters in host computer VI program, packet
It includes: supply voltage, ignition pulse width, spark rate, testing time, normal data, oscillograph parameter.Host computer joins supply voltage
Number is sent to programmable power supply by serial ports, and programmable power supply will export the required voltage being arranged when test；Ignition pulse width parameter, point
Fiery frequency parameter is sent to slave computer by serial ports, and slave computer will the required pulsewidth of output setting and the IGT letter of frequency when test
Number；Oscillograph (oscillograph=capture card+display screen) parameter is sent to oscillograph by serial ports by host computer, and oscillograph is by corresponding
Data carry out parameter setting to adapt to the testing requirement of this system.
2, testing button is pressed, slave computer detects that button is pressed and exports IGT signal, while the transmission of slave computer serial ports is opened
Host computer serial ports is given in the instruction for beginning to test.
Wherein, scaling down processing is carried out using the timer of single-chip microcontroller, changes the ARR(timer of timer refitting value automatically)
Parameter regulation frequency changes timer CCR (capture/compare register) parameter regulation pulsewidth；Define a step
Parameter, initial value are set as 1, and timer overflows a step++；Definition F is frequency values, and definition W is pwm value；When step=1
When, 1. channel C CR=W of timer, other channel C CR=0 of timer are set；As step=2,2. leading to for timer is set
Road CCR=W, other channel C CR=0 of timer；As step=3,3. channel C CR=W of timer is set, timer other
Channel C CR=0；Step=1 is set as step=4 to realize circulation, 4. channel C CR=W of timer is set, timer other
Channel C CR=0；The pwm signal that four 90 ° of tunnel phase phase differences can so be generated (can produce 8 road signals, the road N letter with two timers
Number so analogize).
Four road pwm signals are isolated using high speed photo coupling, by amplification, constant pressure, constant-current circuit processing, are respectively supplied to four
Tested ignition coil is used as IGT signal so that four tested ignition coils share a programmable power supply carry out timesharing drive with into
Row test.In addition slave computer is connected with testing button, red green indicator light.
3, under the common driving of programmable power supply and IGT signal, it is tested ignition coil and starts to work.Since IGT signal is 4
90 ° of road phase phase difference, so a power supply can drive 4 products simultaneously and not interfere with each other.Product work predominantly detects ginseng
Number has primary current with secondary voltage.
4, it is tested ignition coil work and generates corresponding data, collected after data sampling by oscillograph.Oscillograph will be adopted
The data of collection carry out A/D conversion, with hexadecimal 0-FF string representation.In data sampling, four tested ignition coils are shared
One current sensor (Hall sensor) acquires primary current data, and each tested ignition coil uses one 1000 times to decline respectively
Subtract probe acquisition secondary voltage data.
5, after host computer receives the instruction that slave computer starts test, start to be communicated with oscillograph.The string of slave computer
Mouth unit is with the serial port unit data communication of host computer, and after receiving the instruction for starting test, host computer serial port unit is with oscillography
Device communication.
6, host computer sends request and obtains oscilloscope data order.Host computer, which is sent, obtains oscillograph 1. channel data and 2.
The order of channel data.
7, oscillograph receives order, sends corresponding string data to host computer；
8, host computer handles string data, is converted to array.The string length that general source DS1102E oscillograph is sent
It is 310, wherein preceding 10 character strings are header file character string, 11-310 is only the data of our needs, so need to remove front
Remaining 300 character strings of 10 character strings are only the data of our needs.This 300 character strings are converted to a length again
For 300 decimal system integer arrays, it is conducive to compare.
9, data are shown as dimensional waveform by host computer, and display is on computers.Dimensional waveform is observed convenient for human assistance, and two
It is consistent with the waveform of oscilloscope display to tie up waveform.
10, in addition host computer compares array data obtained above and normal data income, judges whether data are setting
Determine in range.Coil inside paradoxical discharge data have jumping characteristic with randomness, it is assumed that first test period coil inside is different
In the A point of array, jumping characteristic shows the point often to discharge: electric discharge special efficacy can make the value data of A point relative to A-1 point, A+1 point
Data, become larger suddenly or become smaller, randomness is shown: the point of coil inside paradoxical discharge in next test period,
A-1 point, A-2 point, A+1 point, A+2 point etc. can be appeared randomly in.Based on this feature, we carry out intelligent decision with the following methods:
Normal data can be divided into two kinds, 2. the data for 1. getting a cycle can also use standard sample as normal data
The data of product test are preserved as normal data；Normal data is asked poor with array data, and seeks absolute value, is obtained new
Array data；Search the maximum value of new array data；If not within the set range, then secondary product does not meet test to maximum value
It is required that ceasing and desisting order by serial ports transmission to slave computer, test product is allowed to stop working；If maximum value is within the set range,
Then loop test is arrived until the testing time of setting, is ceased and desisted order by serial ports transmission to slave computer, slave computer bright green refers to
Show lamp, product test is qualified, this test terminates.
Above-mentioned implementation is merely to clearly illustrate technical solution of the present invention, and should not be understood as to the present invention
Make any restrictions.The present invention has well known a variety of substitutions or deformation in the art, is not departing from essence of the invention
Under the premise of meaning, protection scope of the present invention is each fallen within.
Claims (3)
1. a kind of ignition coil multiple-unit intelligent test system, which is characterized in that N number of tested ignition coil shares a program-controlled electric
Source carries out timesharing driving, and corresponding N number of tested ignition coil setting data sampling unit and capture card, each capture card electrically connect respectively
Each data sampling unit is connect, host computer communicates to connect slave computer and capture card:
Host computer includes test parameter setter and test data contrast device;The setting range of test parameter setter includes: to set
Programmable power supply supply voltage is set, the ignition pulse width, spark rate and testing time of slave computer are set, normal data, setting are set
Capture card parameter；The data that capture card conveys are compared with normal data automatically for test data contrast device；
Slave computer includes signal generator, and signal generator generates the road N pwm signal, 360/N ° of the phase phase difference of each road signal,
Pwm signal is isolated using high speed photo coupling, after amplification, constant pressure, constant-current circuit processing, is respectively supplied to N number of tested ignition lead
It encloses and constitutes the timesharing driving as IGT signal；Slave computer is additionally provided with testing button and the road N indicator light；
Under the collective effect of programmable power supply and IGT signal, N number of tested ignition coil work generates corresponding data, by corresponding to
The data sampling unit of setting carries out data sampling processing, and the collected card of sampled data acquires and is sent to host computer；Host computer
The data received are compared, judge whether product is qualified, and are indicated with red green indicator light.
2. a kind of ignition coil multiple-unit intelligent test method, includes the following steps:
Step 1, before first test, host computer progress test parameter setting, including supply voltage, ignition pulse width, spark rate,
Testing time, normal data, capture card parameter: supply voltage parameter is sent to programmable power supply by serial ports by host computer, test
When programmable power supply according to parameter export needed for voltage；Host computer is sent ignition pulse width parameter, spark rate parameter by serial ports
To slave computer, slave computer exports IGT signal according to parameter when test；Capture card parameter is sent to acquisition by serial ports by host computer
Card, capture card are configured to adapt to the testing requirement of this system according to parameter；
Step 2, presses testing button, and slave computer sends the instruction of " starting to test " to host computer by serial ports；Slave computer simultaneously
The road N pwm signal, 360/N ° of the phase phase difference of each road signal are generated, signal is isolated by high speed photo coupling, amplification, constant pressure, Constant Electric Current
After the processing of road, the road N signal is respectively supplied to N number of tested ignition coil as IGT signal, so that N number of tested ignition coil shares
One programmable power supply carries out timesharing driving；
Step 3, under the common driving of programmable power supply and IGT signal, N number of tested ignition coil is started to work；Due to the road N IGT
The phase of signal differs 360/N ° respectively, so a programmable power supply can drive N number of ignition coil simultaneously and not interfere with each other；
Step 4 is tested ignition coil work and generates corresponding data, is collected card after data sampling and collects；
Step 5, host computer send command adapted thereto to capture card after receiving the instruction of " starting to test ", and capture card starts to acquire,
The data of acquisition are carried out A/D conversion by capture card, are sent to host computer with string data；
Step 6, host computer handle string data income, are converted to array data；
Array data is compared with normal data for step 7, host computer, and the normal data is selected from one of following data, 1.
Use the tested ignition coil operational data got for the first time as normal data, the number 2. tested with ignition coil standard sample
According to preserving as normal data；
The deterministic process of array data: normal data is asked poor with array data, and seeks absolute value, obtains difference data；It searches
The maximum value of difference data, if maximum value is not in setting error range, host computer is ceased and desisted order under by serial ports transmission
Position machine, allows tested ignition coil to stop working, slave computer shiny red indicator light, determines that tested ignition coil does not meet test and wants
It asks；If maximum value, continues to test within the set range, arrived until the testing time of setting, the maximum value still exists
It is arranged in range, host computer is ceased and desisted order by serial ports transmission to slave computer, slave computer bright green indicator light, determines tested igniting
Coil meets test request；This test terminates.
3. test method as claimed in claim 2, which is characterized in that in step 6, array data is converted to two by host computer
Dimension waveform is shown on computer screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811491316.XA CN109541354A (en) | 2018-12-07 | 2018-12-07 | A kind of ignition coil multiple-unit intelligent test system and its test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811491316.XA CN109541354A (en) | 2018-12-07 | 2018-12-07 | A kind of ignition coil multiple-unit intelligent test system and its test method |
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| CN109541354A true CN109541354A (en) | 2019-03-29 |
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Citations (8)
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|---|---|---|---|---|
| CN203178370U (en) * | 2012-12-11 | 2013-09-04 | 天津斯巴克瑞汽车电子有限公司 | Vehicle ignition coil comprehensive detection platform |
| CN203811725U (en) * | 2014-05-13 | 2014-09-03 | 北京德尔福万源发动机管理系统有限公司 | Ignition coil test system |
| CN204177882U (en) * | 2014-09-30 | 2015-02-25 | 宁波市柏诺斯电器有限公司 | A kind of ignition coil instrument |
| CN204731374U (en) * | 2015-06-15 | 2015-10-28 | 常州银河世纪微电子有限公司 | The discharging detection device of ignition coil |
| CN204807643U (en) * | 2015-07-17 | 2015-11-25 | 上海海洧汽车电子有限公司 | Ignition coil performance test platform |
| CN205826773U (en) * | 2016-07-04 | 2016-12-21 | 全悦电子（天津）有限公司 | A kind of automobile ignition coil test circuit |
| CN206740884U (en) * | 2017-05-12 | 2017-12-12 | 重庆金兰电子科技有限公司 | self-test device for ignition coil aging |
| CN108573803A (en) * | 2017-03-09 | 2018-09-25 | 博格华纳路德维希堡有限公司 | Method for operating ignition coil and ignition coil |
-
2018
- 2018-12-07 CN CN201811491316.XA patent/CN109541354A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203178370U (en) * | 2012-12-11 | 2013-09-04 | 天津斯巴克瑞汽车电子有限公司 | Vehicle ignition coil comprehensive detection platform |
| CN203811725U (en) * | 2014-05-13 | 2014-09-03 | 北京德尔福万源发动机管理系统有限公司 | Ignition coil test system |
| CN204177882U (en) * | 2014-09-30 | 2015-02-25 | 宁波市柏诺斯电器有限公司 | A kind of ignition coil instrument |
| CN204731374U (en) * | 2015-06-15 | 2015-10-28 | 常州银河世纪微电子有限公司 | The discharging detection device of ignition coil |
| CN204807643U (en) * | 2015-07-17 | 2015-11-25 | 上海海洧汽车电子有限公司 | Ignition coil performance test platform |
| CN205826773U (en) * | 2016-07-04 | 2016-12-21 | 全悦电子（天津）有限公司 | A kind of automobile ignition coil test circuit |
| CN108573803A (en) * | 2017-03-09 | 2018-09-25 | 博格华纳路德维希堡有限公司 | Method for operating ignition coil and ignition coil |
| CN206740884U (en) * | 2017-05-12 | 2017-12-12 | 重庆金兰电子科技有限公司 | self-test device for ignition coil aging |
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