CN104678225A - Automobile battery simulator - Google Patents
Automobile battery simulator Download PDFInfo
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- CN104678225A CN104678225A CN201510111669.2A CN201510111669A CN104678225A CN 104678225 A CN104678225 A CN 104678225A CN 201510111669 A CN201510111669 A CN 201510111669A CN 104678225 A CN104678225 A CN 104678225A
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Abstract
The invention relates to an automobile battery simulator. The automobile battery simulator comprises a module for simulating automobile ignition starting voltage waveforms, a module for simulating intermittent voltage waveforms and a module for simulating battery power leakage voltage waveforms, wherein each module comprises a variation range of set waveform parameters and distribution rules, including random distribution and uniform distribution, of each parameter, and parameter arrays of the waveforms are generated according to the distribution rules. The voltage waveforms generated according to the set waveform parameters conform to the random waveforms of specific statistics rules, and the waveforms generated by the simulator can be reproduced. The voltage waveforms are utilized to impact an automobile electronic system so as to test the performance of the automobile electronic system after being impacted. The test better conforms to low voltage conditions possibly occurring during actual running, and the test can also be reproduced. The problems that in the prior art, low-voltage impact waveforms generated by using fixed parameters do not have effectiveness, cannot cover work conditions possibly occurring during automobile running and are not favorable to the performance quality control of the automobile electronic system are solved.
Description
Technical field
The present invention relates to a kind of automobile electronic system measuring technology, particularly a kind of automobile batteries emulator.
Background technology
Automotive electronics is designed and developed in process, and the Electromagnetic Compatibility test of automobile electronic system is a requisite content.Such as, in the process that automobile slowly leaks electricity at ignition trigger, poor contact of contacts or battery, supply voltage will decline and produce strong fluctuation.These fluctuations need to carry out shock-testing with the voltage waveform of realistic situation to it on the impact of automobile electronic system performance.In existing test specification, the generation of low-voltage waveform is all use fixed waveform parameter, such as, in existing EMC test specification (ISO16750-2), preset parameter is adopted to generate to the definition of automotive ignition voltage waveform, the waveform of such generation is not often inconsistent with the waveform occurred during actual motion, and test does not have actual effect.
Summary of the invention
The present invention be directed to the low voltage impulse waveform that existing use preset parameter produces and not there is actual effect, working condition possible in automobilism can not be contained, be unfavorable for that automotive electronics performance quality controls this circumscribed problem, propose a kind of automobile batteries emulator, produce waveform parameter at random, there is measurement repdocutbility according to Statistical Distribution, for the automobile batteries emulator of the simulated automotive supply voltage actual state of testing automobile electronic system performance.This battery simulation device can simulate generation: ignition voltage during automobile starting, the batch (-type) voltage caused by reasons such as battery terminal poor contact of contacts, and the low-voltage waveform slowly under three kinds of situations such as battery drain voltage.
Technical scheme of the present invention is: a kind of automobile batteries emulator, and comprise simulation and produce automotive ignition trigger voltage waveform module, simulation produces batch (-type) voltage waveform module, and simulation produces battery drain voltage waveform module; The setting variation range of waveform parameter and the regularity of distribution of parameters is comprised in each analog module, analog module produces the parameter array of waveform at random according to the regularity of distribution of parameter, often organize parameter and generate a voltage waveform, with the voltage waveform produced, automobile electronic system is impacted, the performance after testing automobile electronic system is hit.
Described stochastic distribution is uniformly distributed or normal distribution.
The waveform that described simulation produces the generation of automotive ignition trigger voltage waveform module comprises four sections, and parameter is V
1, V
2, V
3, V
4, V
5, T
1, T
2, T
3, T
4, T
r1, T
r2, f, M:
First paragraph engine does not start the voltage wave at front battery two ends, is straight wave, and voltage is V
1, the corresponding time is T
1;
Second segment engine start transient voltage ripple is oblique line ripple, from V
1drop to V
2, V
2for the minimum voltage that engine start reaches instantaneously, the corresponding time is T
2;
3rd section of minimum voltage ME for maintenance ripple is straight wave, and voltage is V
2, corresponding time T
3holding time of minimum voltage,
4th section of engine start goes back up to startup from minimum voltage and to finish the work voltage wave, and the corresponding time is T
r1+ T
4+ T
r2time and, T
r1for the oblique line ripple time, corresponding oblique line ripple is point from minimum voltage to voltage oscillation; T
4for the step-down sine-wave oscillation ripple time, corresponding wave of oscillation frequency is f, and oscillation amplitude is M, V
4and V
5the minimum and maximum magnitude of voltage that voltage vibrates in rise process respectively; T
r2for the oblique line ripple time, corresponding oblique line ripple be from voltage oscillation end point to start after operating voltage, V
3it is the operating voltage after engine start;
Described simulation produces the waveform that batch (-type) voltage waveform module produces:
Comprise normal battery voltage wave and the low-voltage ripple caused by poor contact of contacts, parameter is T
10, T
11, T
12, from initial timing to good the holding time as T of battery two ends contact
10, maintain normal battery voltage wave; The T that holds time of the low-voltage caused by poor contact of contacts
12, maintain low-voltage; Lower primary cell two ends contact well arrives the T that holds time during loose contact again
11, maintain normal battery voltage wave;
The waveform that described simulation produces the generation of battery drain voltage waveform module comprises six sections of waveforms, and parameter is V
21, V
22, V
23, T
20, T
21, T
22, T
23, T
24, T
25,
Holding time as T of first paragraph no-voltage
20, voltage is zero;
Second segment straight line voltage wave, holding time as T when battery two end in contact is good
21, corresponding battery does not leak electricity the voltage V at front battery two ends
21;
3rd section of cell discharge voltage ripple, oblique line ripple, from voltage V
21terminating minimum voltage to battery discharge is V
22,
Corresponding battery discharge time is T
22,
;
4th section of low-voltage maintains straight wave, and voltage is V
22, the time T that the time is experienced for maintaining low-voltage after battery discharge
23;
5th section of trickle charge voltage wave, oblique line ripple, from voltage V
22rise to the burning voltage V after battery charging
23, the time is trickle charging time T
24,
;
6th section of charging terminates rear straight line voltage wave, and voltage is V
23, the time is the stable work time T that charging terminates rear battery
25.
Beneficial effect of the present invention is: automobile batteries emulator of the present invention, the surge waveform produced meets the random waveform of certain statistical rule, contingent low-voltage waveform during more realistic operation, makes the more realistic situation that may occur of automotive electronics performance test.The waveform simultaneously produced can reappear, thus ensure that the reproducibility of test.It effectively solves the low voltage impulse waveform that existing use preset parameter produces does not have actual effect, can not contain working condition possible in automobilism, be unfavorable for that automobile electronic system performance quality controls this problem.
Accompanying drawing explanation
Fig. 1 is voltage waveform and Parameter Map when engine ignition starts in the embodiment of the present invention;
Fig. 2 is embodiment of the present invention discontinuous formula voltage waveform and Parameter Map;
Fig. 3 is electrical leakage voltage waveform and Parameter Map in the invention process.
Embodiment
The automobile batteries emulator of the embodiment of the present invention comprises simulation and produces automotive ignition trigger voltage waveform module, simulation produces batch (-type) voltage waveform module, simulation produces battery drain voltage waveform module, three kinds of analog modules press Seed Points and the scope of stochastic distribution rule setup parameter, produce the parameter array of waveform, according to the waveform parameter formation voltage waveform produced, automobile electronic system is impacted, performance after being hit with testing automobile electronic system, then can obtain detecting automobile electronic system to the performance reaction often organizing surge waveform, find out thin spot or the trouble spot of automobile electronic system.Voltage waveform and Parameter Map when Fig. 1 is car engine ignition startup.Fig. 2 is batch (-type) voltage waveform and Parameter Map, and it can be used for detecting the voltage fluctuation situation caused by the poor contact of contacts of automobile batteries two ends.The loose contact that the damage etc. comprising setup error, distribution or connector produces.As shown in Figure 3, it can be used for detecting automobile by battery discharge slowly, change to the voltage fluctuation caused by trickle charge to maintenance low-voltage again for automobile electrical leakage voltage waveform and Parameter Map.Such as when the situation that motor car engine has been closed but still retain as some carload such as car light and radio.
1, pass through automotive ignition trigger voltage, batch (-type) voltage, the analysis of the cell voltage waveform under battery drain voltage three kinds of situations, according to the electromagnetic compatibility standard that certain well-known Automobile Enterprises is worked out, be directed to the engine that cell voltage is 12v, determine their voltage waveform respectively as shown in Figure 1, Figure 2, Figure 3 shows, and determine that the parameter causing waveform to change comprises voltage magnitude V, frequency f, time T etc.
Fig. 1 is voltage waveform and parameter when engine ignition starts in the embodiment of the present invention, and it simulates the fluctuation situation of voltage when car engine ignition starts.Determine that the parameter of automotive ignition trigger voltage waveform has V
1, V
2, V
3, V
4, V
5, T
1, T
2, T
3, T
4, T
r1, T
r2, totally 13 parameters such as f, M etc.Their understand the random variation with factors such as the charging and discharging state of system configuration, electrical load, battery and the environment temperatures of surrounding.Wherein: V
1be the voltage that engine does not start front battery two ends, variation range is 10 V ~ 14V; V
2be the minimum voltage that engine start reaches instantaneously, variation range is 1V ~ 8V; V
3operating voltage 12 V after engine start; V
4, V
5the minimum and maximum magnitude of voltage that voltage vibrates in rise process respectively, V
4variation range be 4V ~ 10V, V
5change scope be 3V ~ 8V; T
1be the time experienced from initial timing to engine start, variation range is 15ms ~ 19999ms; T
2the time 5ms that engine start drops to minimum voltage instantaneously and experiences; T
3be holding time of minimum voltage, variation range is 5ms ~ 105ms; T
r1+ T
4+ T
r2be in engine starting process from minimum voltage bottom out to started experience time and, T
r1variation range be 20ms ~ 150ms, T
r2for 500ms, T
4variation range be 1sec ~ 31sec; F is the frequency 4Hz of sinusoidal fluctuation voltage, and amplitude M is the peak-to-peak value of fluctuation voltage, and its variation range is 1 V ~ 2V.
Fig. 2 is embodiment of the present invention discontinuous formula voltage waveform and Parameter Map; It simulates the voltage fluctuation situation caused by the poor contact of contacts of automobile batteries two ends.The loose contact that the damage etc. that it comprises setup error, distribution or connector produces.The parameter determining automobile batch (-type) voltage waveform as shown in Figure 2, has T
10, T
11, T
12deng totally 3 parameters.Being the engine of 12V for cell voltage, is in the test process of 5 minutes in the time: T
10from initial timing to the good 60sec that holds time of battery two ends contact; T
12holding time of the low-voltage caused by poor contact of contacts, T
11lower primary cell two ends contact holding time, for T when well arriving loose contact again
11and T
12each maximal value, different seeds is set, all can stochastic generation sequence results.Wherein:
,
。
Fig. 3 is electrical leakage voltage waveform and parameter in the embodiment of the present invention.It simulates by battery discharge slowly, changes to the voltage fluctuation caused by trickle charge to maintenance low-voltage again.Such as when the situation that motor car engine has been closed but still retain as some carload such as car light and radio.The parameter determining automobile electrical leakage voltage waveform as shown in Figure 3, has V
21, V
22, V
23, T
20, T
21, T
22, T
23, T
24, T
25, wait totally 9 parameters.Wherein: V
21that battery does not leak electricity voltage 12 V at front battery two ends; V
22be the low-voltage that battery discharge terminates to maintain before trickle charge, variation range is 0 ~ 10 v; V
23burning voltage 12 v after battery charging; T
20for the 10sec that holds time of no-voltage; T
21for battery two end in contact good time the 60sec that holds time; T
22for battery discharge time,
, s and V is unit; T
23for maintaining the time 1s that low-voltage experiences after battery discharge; T
24for trickle charging time,
; T
25for charging terminates the stable work time 60sec of rear battery.If T
21, T
25can within the shorter time cycle complete operation, so setting if having time of this module can suitably reduce.It is that under the prerequisite passed through in all operator schemes (such as on/off, open/close), institute carries out simulation emulation, is used to verify the correct function of each important model.
Following implementation step is specifically addressed the present invention with the example that is generated as of engine ignition trigger voltage random waveform.
1), corresponding programming is carried out to the three kinds of cell voltage waveforms generated.Random number generation function in LabVIEW is utilized to produce V
1, V
2, V
3, V
4, V
5, T
1, T
2, T
3, T
4, T
r1, T
r2, the sequence of 13 parameters such as f, M.Assuming that 100 waveforms will be produced, 13 parameters get identical number of samples 100, these 100 sampled values all obey specific stochastic distribution (being uniformly distributed or normal distribution), and be saved in 13 independently in (1 × 100) dimension group, 13 parameters that each array arranges corresponding to specific subscript determine a voltage waveform, 100 waveform shapes of such generation are substantially identical, but there are differences, and there is randomness, each argument sequence of such generation depends on predetermined mean value and scope (being uniformly distributed), or variance (normal distribution).Such as the parameter V in Fig. 1
2, can be 3.5V according to the actual conditions determination average of voltage drop, variation range be 2.5V ~ 4.5V, and variance is 0.5V.
2), in LabVIEW design vehicle battery simulation system operation interface, realize automotive ignition trigger voltage, batch (-type) voltage, the cell voltage waveform under battery drain voltage three kinds of situations is selected.
3), the subfunction interface that each waveform of design vehicle battery simulation system generates, on this operation interface, show the optimum configurations options menu needed for the generation of this voltage waveform, as voltage, time, the subfunction interface that each waveform of Frequency Design automobile batteries analogue system generates, on this operation interface, show the optimum configurations options menu needed for the generation of this voltage waveform, as voltage, time, the parameter setting window such as frequency and data storage path etc., user can select the regularity of distribution of each parameter in drop-down menu according to actual testing requirement, and the Seed Points required for this distribution.Different distributions can be selected: be evenly distributed and normal distribution in the different phase of test.When testing for the first time, being evenly distributed is a reasonably selection, because it will give the possibility of each value equalization in test group.And verified some parameters can produce fault near certain value after testing through several times, the parameter group that so will generate will mainly depart near this point.In this case, select normal distribution, rational average and variance are set.Click " loading parameters " after optimum configurations, the waveform produced after system cloud gray model will show in right side window.The voltage waveform produced drives automobile electronic system by program control power power-supply, impacts, the performance after testing automobile electronic system is hit to automobile electronic system.
4), by the array that 13 (1 × 100) of the above-mentioned decision waveform determined tie up record, exported by the form of Microsoft Excel, such as, when needs repeated test, when finding fault, by V
1, V
2, V
3, V
4, V
5, T
1, T
2, T
3, T
4, T
r1, T
r2, these 13 parameters of f, M, in the mode of the generation waveform of fixed value, can reappear 100 voltage waveforms generated before it, realize the repdocutbility measured.
Claims (3)
1. an automobile batteries emulator, is characterized in that, comprise simulation and produce automotive ignition trigger voltage waveform module, simulation produces batch (-type) voltage waveform module, and simulation produces battery drain voltage waveform module; The setting variation range of waveform parameter and the regularity of distribution of parameters is comprised in each analog module, analog module produces the parameter array of waveform at random according to the regularity of distribution of parameter, often organize parameter and generate a voltage waveform, with the voltage waveform produced, automobile electronic system is impacted, the performance after testing automobile electronic system is hit.
2. automobile batteries emulator according to claim 1, it is characterized in that, the regularity of distribution of described waveform parameter is normal distribution or is uniformly distributed.
3. automobile batteries emulator according to claim 1 and 2, is characterized in that, the waveform that described simulation produces the generation of automotive ignition trigger voltage waveform module comprises four sections, and parameter is V
1, V
2, V
3, V
4, V
5, T
1, T
2, T
3, T
4, T
r1, T
r2, f, M:
First paragraph engine does not start the voltage wave at front battery two ends, is straight wave, and voltage is V
1, the corresponding time is T
1;
Second segment engine start transient voltage ripple is oblique line ripple, from V
1drop to V
2, V
2for the minimum voltage that engine start reaches instantaneously, the corresponding time is T
2;
3rd section of minimum voltage ME for maintenance ripple is straight wave, and voltage is V
2, corresponding time T
3holding time of minimum voltage,
4th section of engine start goes back up to startup from minimum voltage and to finish the work voltage wave, and the corresponding time is T
r1+ T
4+ T
r2time and, T
r1for the oblique line ripple time, corresponding oblique line ripple is point from minimum voltage to voltage oscillation; T
4for the step-down sine-wave oscillation ripple time, corresponding wave of oscillation frequency is f, and oscillation amplitude is M, V
4and V
5the minimum and maximum magnitude of voltage that voltage vibrates in rise process respectively; T
r2for the oblique line ripple time, corresponding oblique line ripple be from voltage oscillation end point to start after operating voltage, V
3it is the operating voltage after engine start;
Described simulation produces the waveform that batch (-type) voltage waveform module produces:
Comprise normal battery voltage wave and the low-voltage ripple caused by poor contact of contacts, parameter is T
10, T
11, T
12, from initial timing to good the holding time as T of battery two ends contact
10, maintain normal battery voltage wave; The T that holds time of the low-voltage caused by poor contact of contacts
12, maintain low-voltage; Lower primary cell two ends contact well arrives the T that holds time during loose contact again
11, maintain normal battery voltage wave;
The waveform that described simulation produces the generation of battery drain voltage waveform module comprises six sections of waveforms, and parameter is V
21, V
22, V
23, T
20, T
21, T
22, T
23, T
24, T
25:
Holding time as T of first paragraph no-voltage
20, voltage is zero;
Second segment straight line voltage wave, holding time as T when battery two end in contact is good
21, corresponding battery does not leak electricity the voltage V at front battery two ends
21;
3rd section of cell discharge voltage ripple, oblique line ripple, from voltage V
21terminating minimum voltage to battery discharge is V
22,
Corresponding battery discharge time is T
22,
;
4th section of low-voltage maintains straight wave, and voltage is V
22, the time T that the time is experienced for maintaining low-voltage after battery discharge
23;
5th section of trickle charge voltage wave, oblique line ripple, from voltage V
22rise to the burning voltage V after battery charging
23, the time is trickle charging time T
24,
;
6th section of charging terminates rear straight line voltage wave, and voltage is V
23, the time is the stable work time T that charging terminates rear battery
25.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111669.2A CN104678225B (en) | 2015-03-13 | 2015-03-13 | Automobile batteries emulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111669.2A CN104678225B (en) | 2015-03-13 | 2015-03-13 | Automobile batteries emulator |
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| Publication Number | Publication Date |
|---|---|
| CN104678225A true CN104678225A (en) | 2015-06-03 |
| CN104678225B CN104678225B (en) | 2017-08-25 |
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ID=53313566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510111669.2A Expired - Fee Related CN104678225B (en) | 2015-03-13 | 2015-03-13 | Automobile batteries emulator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383325A (en) * | 2016-11-10 | 2017-02-08 | 东莞市仲康电子科技有限公司 | Testing method and testing system for aging of automotive starting power supply |
| CN107462797A (en) * | 2017-09-18 | 2017-12-12 | 安徽江淮汽车集团股份有限公司 | A kind of automobile starting voltage analog system and method |
| WO2018054145A1 (en) * | 2016-09-22 | 2018-03-29 | 宁德时代新能源科技股份有限公司 | Battery cell simulator system |
| CN111289927A (en) * | 2020-03-02 | 2020-06-16 | 大陆汽车电子(长春)有限公司 | Starting signal simulation device, test method and system of intelligent battery sensor |
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|---|---|
| CN104678225B (en) | 2017-08-25 |
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