CN103439966A - Automobile artificial load matrix-type circuit - Google Patents
Automobile artificial load matrix-type circuit Download PDFInfo
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- CN103439966A CN103439966A CN2013103628997A CN201310362899A CN103439966A CN 103439966 A CN103439966 A CN 103439966A CN 2013103628997 A CN2013103628997 A CN 2013103628997A CN 201310362899 A CN201310362899 A CN 201310362899A CN 103439966 A CN103439966 A CN 103439966A
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Abstract
The invention relates to an automobile artificial load matrix-type circuit, and belongs to the technical field of circuits. The automobile artificial load matrix-type circuit is characterized in that the automobile artificial load matrix-type circuit comprises n branch return circuits which are connected in parallel, each branch return circuit is provided with a load, the sizes of the loads gradually decrease by one half, and each branch return circuit is provided with an MOS pipe switch; set analog voltage is loaded at the two ends of each branch return circuit of the n branch return circuits which are connected in parallel. The automobile artificial load matrix-type circuit has the advantages that in a control circuit of a resistor matrix, according to the binary code principle and through switching of the MOS pipe switches to form different combinations, the functions of the automobile artificial loads can be realized and generally, various current wave forms collected by actual loads from the finished automobile environment can be simulated; through adjustment of the minimum current and the control speed of the MOS pipe switches, the wave form of an output current can be adjusted, so that the wave form is closer to the current wave form of a finished automobile load.
Description
Technical field
The present invention relates to a kind of simulative automobile moment of load configuration circuit, belong to the circuit engineering field.
Background technology
BCM is a kind of control system for car load, relates generally to lamp in car body, door, and window and vehicle body guarding portion, with the performance of other module shared car loads and safe realization, for driving brings more intelligence and comfortable.The major function of this control system comprises: control all car lights on automobile; Control rain brush low speed, at a high speed, service intermittent; The electromagnetic valve work be connected with inter-axle differential between control and power takeoff, full wheel drive, wheel; The action of real-time response pilothouse gauge tap; The light self-checking function; Fault diagnosis station-keeping ability etc.
Along with the development of automobile BCM (Body Control Module) is more and more faster, kind is more and more, test for BCM, with common actual loading, do experiment, complexity is increasing, changes product speed slow, not convenient, the shortcomings such as cost is high, and applicability is low, and simulating degree is low display gradually.Research and development of products unit, when its BCM is done experiment, often is difficult to obtain all automobile loads, and a BCM of every research and development is when doing experiment, as buys a car load as test load, obviously will expend great cost again.
Summary of the invention
The shortcomings such as the technical issues that need to address of the present invention are: existing automobile BCM tests, and usually adopts actual loading to do experiment, and complexity is increasing, changes product speed slow, and not convenient, cost is high, and applicability is low, and simulating degree is low display gradually.Research and development of products unit, when its BCM is done experiment, often is difficult to obtain all automobile loads, and a BCM of every research and development is when doing experiment, as buys a car load as test load, obviously will expend great cost again.
The present invention takes following technical scheme:
A kind of simulative automobile moment of load configuration circuit, comprise the duplexure that the n bar is connected in parallel, and every duplexure is provided with a load, load one by one 1/2nd times successively decrease, every duplexure is equipped with the metal-oxide-semiconductor switch; The analog voltage of setting is carried in the duplexure two ends that described N bar is connected in parallel.
Further, the identical load of at least one resistance of connecting again of every duplexure, and be provided with corresponding metal-oxide-semiconductor switch and control the disconnection of this load/connection.
Further, described n=8, the resistance of first load is 96 Ω, and the resistance of the 8th load is 0.75 Ω, and analog voltage is loaded as 12V.
Further, the load that resistance is identical of connecting again of every duplexure, and this load is while being communicated with, and analog voltage is loaded as 24V.
A kind of simulative automobile moment of load configuration circuit carries out the method for load simulation, and establishing the single channel maximum current is I
max, the single channel minimum current is I
min, I
max=2
n-1* I
min; Some that choose as required in n bar duplexure are connected in parallel, the metal-oxide-semiconductor switch closure in corresponding loop, and its cocircuit disconnects, and in the certain situation of analog voltage, obtains with I
mincurrent value for minimum current change unit.
Characteristics of the present invention are: in the control circuit of resistor matrix, utilize 2 ary codes principles, by the metal-oxide-semiconductor switch of switching various combination, can realize the function of simulative automobile load, usually can simulate the various current waveforms that actual loading gathers from the car load environment.Can adjust the waveform of output current by the size of adjustment minimum current and the speed of metal-oxide-semiconductor switch control, make the current waveform of waveform and car load load more close.
Beneficial effect of the present invention is:
When 1) automobile BCM tests, load simulation is convenient, and quick, difficulty reduces greatly.
2) applicability of load simulation is strong, can obtain with minimum current I
minfor any analog current value of change unit, the simulation similarity is very high.
3) without buying actual loading, more, without buying car load, the cost of load simulation related experiment reduces greatly.
The accompanying drawing explanation
Fig. 1 is the circuit diagram of simulative automobile moment of load configuration circuit of the present invention.
Fig. 2 is that actual vehicle window rises and the current waveform comparison diagram of simulating the vehicle window rising.
Fig. 3 is that actual vehicle window descends and the current waveform comparison diagram of simulating vehicle window decline.
Fig. 4 scrapes water actual intermittence intermittently to scrape water power stream comparison of wave shape figure with simulation.
Fig. 5 is that reality is scraped water power stream waveform continuously and water power stream comparison of wave shape figure is scraped in simulation continuously.
Fig. 6 is 47W(21+21+5) car light load current waveform and the comparison diagram of simulating the car light load current waveform.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described.
Referring to Fig. 1, a kind of simulative automobile moment of load configuration circuit, comprise 8 duplexures that are connected in parallel, every duplexure is provided with a load, load one by one 1/2nd times successively decrease, the resistance of first load is 96 Ω, and the resistance of the 8th load is 0.75 Ω, and every duplexure is equipped with the metal-oxide-semiconductor switch; The 12V analog voltage of setting is carried in the duplexure two ends that the N bar is connected in parallel.So, the single channel minimum current is 12V/96 Ω=0.125A, and the maximum current of single channel is 12V/0.75 Ω=16A.As need obtain larger electric current, only need by controlling the metal-oxide-semiconductor switch, many loops are together in parallel and get final product.Electric current minimum change unit is 0.125A, and maximum output current is:
0.125+0.25+0.5+1+2+4+8+16=31.875A。
Simultaneously, the load that resistance is identical of connecting again of every duplexure, and be provided with corresponding metal-oxide-semiconductor switch and control the disconnection of this load/connection.And, when this load is communicated with, analog voltage is loaded as 24V, in the time of can obtaining like this with the 12V analog voltage, same analog current value.In practical application, the load number of series connection can be expanded, and corresponding analog voltage also can be expanded.
Actual duplexure quantity also can be expanded, and establishing duplexure quantity is n, and the single channel maximum current is I
max, the single channel minimum current is I
min, I
max=2
n-1* I
min; Some that choose as required in n bar duplexure are connected in parallel, the metal-oxide-semiconductor switch closure in corresponding loop, and its cocircuit disconnects, and in the certain situation of analog voltage, obtains with I
mincurrent value for minimum current change unit.
Successively referring to Fig. 2-Fig. 6, as can be seen from the figure, car light, vehicle window descend, vehicle window rises, actual loading current waveform and the fictitious load current waveform of rain shaving electrical machine even load, actual loading current waveform and fictitious load current waveform are contrasted, can find out, waveform is basically identical, has reached test b CM and has tested required effect.
In sum, in the control circuit of resistor matrix, utilize 2 ary codes principles, by the metal-oxide-semiconductor switch of switching various combination, can realize the function of simulative automobile load, usually can simulate the various current waveforms that actual loading gathers from the car load environment.Can adjust the waveform of output current by the size of adjustment minimum current and the speed of metal-oxide-semiconductor switch control, make the current waveform of waveform and car load load more close.
Claims (5)
1. a simulative automobile moment of load configuration circuit is characterized in that:
Comprise the duplexure that the n bar is connected in parallel, every duplexure is provided with a load, load one by one 1/2nd times successively decrease, every duplexure is equipped with the metal-oxide-semiconductor switch;
The analog voltage of setting is carried in the duplexure two ends that described N bar is connected in parallel.
2. simulative automobile moment of load configuration circuit as claimed in claim 1 is characterized in that: the identical load of at least one resistance of connecting again of every duplexure, and be provided with corresponding metal-oxide-semiconductor switch and control the disconnection of this load/connection.
3. simulative automobile moment of load configuration circuit as claimed in claim 1 or 2 is characterized in that: described n=8, and the resistance of first load is 96 Ω, and the resistance of the 8th load is 0.75 Ω, and analog voltage is loaded as 12V.
4. simulative automobile moment of load configuration circuit as claimed in claim 3 is characterized in that: the load that resistance is identical of connecting again of every duplexure, and this load is while being communicated with, and analog voltage is loaded as 24V.
5. a simulative automobile moment of load configuration circuit as claimed in claim 1 carries out the method for load simulation, it is characterized in that:
If the single channel maximum current is I
max, the single channel minimum current is I
min, I
max=2
n-1* I
min;
Some that choose as required in n bar duplexure are connected in parallel, the metal-oxide-semiconductor switch closure in corresponding loop, and its cocircuit disconnects, and in the certain situation of analog voltage, obtains with I
mincurrent value for minimum current change unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103628997A CN103439966A (en) | 2013-08-19 | 2013-08-19 | Automobile artificial load matrix-type circuit |
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|---|---|---|---|
| CN2013103628997A CN103439966A (en) | 2013-08-19 | 2013-08-19 | Automobile artificial load matrix-type circuit |
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| CN103439966A true CN103439966A (en) | 2013-12-11 |
Family
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645358A (en) * | 2013-12-16 | 2014-03-19 | 天津市鑫鼎源科技发展有限公司 | Matrix load device |
| CN107607754A (en) * | 2017-09-29 | 2018-01-19 | 广东福德电子有限公司 | A kind of load box |
| CN109076667A (en) * | 2016-05-06 | 2018-12-21 | 欧司朗股份有限公司 | For simulating the circuit device and method that come from the load current of onboard power system |
| CN115149798A (en) * | 2022-06-24 | 2022-10-04 | 广州擎天实业有限公司 | Code value operation type soft switch resistance load and system for PEMFC performance test |
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| DE19808595B4 (en) * | 1998-02-28 | 2008-06-26 | Schneider Automation Gmbh | Arrangement with an electrical load in series with two controllable semiconductor devices |
| CN1948970A (en) * | 2006-10-30 | 2007-04-18 | 郭晓松 | High power digital varistor and testing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645358A (en) * | 2013-12-16 | 2014-03-19 | 天津市鑫鼎源科技发展有限公司 | Matrix load device |
| CN109076667A (en) * | 2016-05-06 | 2018-12-21 | 欧司朗股份有限公司 | For simulating the circuit device and method that come from the load current of onboard power system |
| CN109076667B (en) * | 2016-05-06 | 2021-07-20 | 欧司朗股份有限公司 | Circuit arrangement and method for simulating a load current from an on-board electrical system |
| CN107607754A (en) * | 2017-09-29 | 2018-01-19 | 广东福德电子有限公司 | A kind of load box |
| CN115149798A (en) * | 2022-06-24 | 2022-10-04 | 广州擎天实业有限公司 | Code value operation type soft switch resistance load and system for PEMFC performance test |
| CN115149798B (en) * | 2022-06-24 | 2023-08-15 | 广州擎天实业有限公司 | Code value operation type soft switch resistance load and system for PEMFC performance test |
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Application publication date: 20131211 |