CN206431186U - A kind of quiescent current test system - Google Patents
A kind of quiescent current test system Download PDFInfo
- Publication number
- CN206431186U CN206431186U CN201720101614.8U CN201720101614U CN206431186U CN 206431186 U CN206431186 U CN 206431186U CN 201720101614 U CN201720101614 U CN 201720101614U CN 206431186 U CN206431186 U CN 206431186U
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- CN
- China
- Prior art keywords
- power supply
- tested module
- resistance board
- quiescent current
- magnetic inductive
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model is related to a kind of quiescent current test system, and the system includes：Magnetic inductive current sensor, resistance board and the host computer electrically connected with the resistance board output end；Power supply is powered by two electric wires for tested module, wherein in two electric wires any one pass through the magnetic inductive current sensor；The magnetic inductive current sensor output is electrically connected with the input of the resistance board；The host computer is worth to according to the transient current quiescent current of the tested module by controlling the resistance board to obtain the transient current value of the tested module in real time.By the utility model, the high precision collecting to quiescent current is realized.
Description
Technical field
The utility model is related to a kind of quiescent current test system.
Background technology
As electronic equipment is continuously increased on automobile, a significant challenge that electronic control module designer faces
It is：How properties of product are improved under limited power budget.For example：Stereo and entertainment systems, windshield wiper control system, car light drive
Dynamic system and airbag control system etc. are powered dependent on automobile batteries, and designer needs to stop in automobile flameout and automobile
Reduce the power consumption of each system as far as possible afterwards, and assess the important parameter of automobile electronic module power consumption size after automobile flameout just
It is quiescent current.
In the prior art, it is general using the conventional current sensors such as universal meter collection quiescent current, acquisition precision than relatively low,
And easily disturbed during collection quiescent current by external signal.
Utility model content
The utility model provides a kind of quiescent current test system, to realize the high precision collecting to quiescent current.
To achieve the above object, the utility model provides following technical scheme：
A kind of quiescent current test system, including：Magnetic inductive current sensor, resistance board and with the resistance
The host computer of board output end electrical connection；Power supply is powered by two electric wires for tested module, wherein appointing in two electric wires
Meaning one passes through the magnetic inductive current sensor；The magnetic inductive current sensor output and the resistance board
Input is electrically connected；The host computer by controlling the resistance board to obtain the transient current value of the tested module in real time,
And the quiescent current of the tested module is worth to according to the transient current.
Preferably, the power supply is programmable power supply, the programmable power supply and the upper mechatronics；The programmable power supply
Electrically connected by two electric wires with the tested module, the host computer is by controlling the programmable power supply to be tested to be described
Module for power supply.
Preferably, the magnetic inductive current sensor is fluxgate DC leakage flow transmitter.
Preferably, the model PXI-6233 of the resistance board.
The beneficial effects of the utility model are：
The quiescent current test system that the utility model is provided, the power line of tested module passes through magnetic inductive current sense
Device, so that the magnetic inductive current sensor gathers the transient current of tested module in real time；Host computer is by controlling resistance board
Card obtains the transient current value of tested module in real time, and is worth to according to the transient current quiescent current of tested module.
By the utility model, the high precision collecting to quiescent current is realized.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the utility model embodiment quiescent current test system.
Fig. 2 is another structural representation of the utility model embodiment quiescent current test system.
Label in accompanying drawing：
L, magnetic inductive current sensor
Embodiment
In order that those skilled in the art can be further understood that feature of the present utility model and technology contents, with reference to
Drawings and embodiments elaborate to the utility model embodiment.
As shown in figure 1, being a kind of structural representation of the utility model embodiment quiescent current test system, the system bag
Include magnetic inductive current sensor L, resistance board and the host computer electrically connected with the resistance board output end；Power supply leads to
Two electric wires are crossed to power for tested module, wherein in two electric wires any one pass through the magnetic inductive current sensor
L；The magnetic inductive current sensor L output ends are electrically connected with the input of the resistance board；The host computer passes through control
The transient current value that the resistance board obtains the tested module in real time is made, and the quilt is worth to according to the transient current
Survey the quiescent current of module.
It should be noted that in the utility model, tested module can be that the electronic component on vehicle can also electronics
Circuit is controlled, such as tested module is windshield wiper control circuit or air bag.The operating voltage of resistance board is 12V, and resistance board can
To be powered by vehicle battery, it can also be powered by other power supply modules.
It should be noted that in the embodiment of the present invention, host computer gathers the electric electric current of transient state of tested module, collection essence in real time
Degree can reach 1%；LabVIEW test softwares can be loaded in the host computer, the host computer passes through LabVIEW test software controls
The PXI-6233 resistance board is made, to select the input channel number of the PXI-6233 resistance board, further collection
The transient current of the tested module, and the static state that tested module is obtained after the average value of transient current is taken in setting time section
Current value.It should be noted that setting time passes through demarcation, such as, setting time according to the hardware of quiescent current test system
For 10min.
Further, because the supply voltage of each tested module may be different, therefore, as shown in Fig. 2 the power supply can be with
To be that the power supply is programmable power supply by the programmable power supply of PC control, the programmable power supply and the upper mechatronics；
The programmable power supply is electrically connected by two electric wires with the tested module, and the host computer is by controlling the program-controlled electric
Source is that the tested module is powered.It should be noted that host computer is by controlling the programmable power supply, can be rated voltage
Tested module provides power supply, so as to expand power supply range of choice.
Specifically, the magnetic inductive current sensor L is fluxgate DC leakage flow transmitter.
Utilize fluxgate principle (Flux gate) will it should be noted that fluxgate DC leakage flow transmitter is one kind
Measured DC is converted between the measurement module of the DC current or voltage signal exported with the current in proportion, former secondary
High-insulation, and with pinpoint accuracy, high linearity, high integration, small volume structure be simple, long-term work is stable and adaptation
The characteristics of various working environments.The signals, this standard signal such as the direct current DC4-20mA, DC0-5V, DC0-10V of usual outputting standard
It can be gathered by a variety of collecting devices, new energy, oil, colliery, chemical industry, railway, communication, building automation can be widely used in
The occasion of the current monitorings such as system control and detection etc. the electrical equipment of industry.Further, by using magnetic in the present embodiment
Open gate DC leakage flow transmitter, improves the anti-interference of system.
Specifically, the model PXI-6233 of the resistance board.
Further, in the utility model embodiment, the negative pole end of the fluxgate DC leakage flow transmitter with it is described
The earth terminal connection of PXI-6233 resistance board inputs.
In summary, the quiescent current test system that this adaptation new embodiment is provided, using magnetic inductive current sense
Device gathers the transient current of tested module, is not disturbed by foreign current signal, strong anti-interference performance；Pass through PC control resistance
Board to control the collection of magnetic inductive current sensor exactly, and test circuit is simple, and quick, efficiently test can be achieved；Enter
One step, the control by automated software to resistance board realizes the high precision collecting to tested module quiescent current.
The utility model embodiment is described in detail above, embodiment used herein is to this practicality
New to be set forth, the explanation of above example is only intended to help and understands the utility model；Simultaneously for the one of this area
As technical staff, according to thought of the present utility model, will change in specific embodiments and applications, to sum up
Described, the utility model content should not be construed as to limitation of the present utility model.
Claims (4)
1. a kind of quiescent current test system, it is characterised in that including：Magnetic inductive current sensor, resistance board, Yi Jiyu
The host computer of the resistance board output end electrical connection；Power supply is powered by two electric wires for tested module, wherein described two
Any one passes through the magnetic inductive current sensor in electric wire；The magnetic inductive current sensor output and the electricity
The input electrical connection of baffle-wall card；The host computer is by controlling the resistance board to obtain the transient state of the tested module in real time
Current value, and it is worth to according to the transient current quiescent current of the tested module.
2. quiescent current test system according to claim 1, it is characterised in that the power supply is programmable power supply, described
Programmable power supply and the upper mechatronics；The programmable power supply is electrically connected by two electric wires with the tested module,
The host computer is by controlling the programmable power supply to be powered for the tested module.
3. quiescent current test system according to claim 1 or 2, it is characterised in that the magnetic inductive current sense
Device is fluxgate DC leakage flow transmitter.
4. quiescent current test system according to claim 3, it is characterised in that the model PXI- of the resistance board
6233。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101614.8U CN206431186U (en) | 2017-01-25 | 2017-01-25 | A kind of quiescent current test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101614.8U CN206431186U (en) | 2017-01-25 | 2017-01-25 | A kind of quiescent current test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206431186U true CN206431186U (en) | 2017-08-22 |
Family
ID=59591279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720101614.8U Expired - Fee Related CN206431186U (en) | 2017-01-25 | 2017-01-25 | A kind of quiescent current test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206431186U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020775A (en) * | 2017-12-07 | 2018-05-11 | 渭南师范学院 | Integrated circuit DC parameter I-V curve tests system |
| CN108322883A (en) * | 2017-12-21 | 2018-07-24 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle audio quiescent current automatization test system and method |
| CN114325043A (en) * | 2021-12-16 | 2022-04-12 | 华人运通(江苏)技术有限公司 | System and method for improving small current test precision |
-
2017
- 2017-01-25 CN CN201720101614.8U patent/CN206431186U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020775A (en) * | 2017-12-07 | 2018-05-11 | 渭南师范学院 | Integrated circuit DC parameter I-V curve tests system |
| CN108322883A (en) * | 2017-12-21 | 2018-07-24 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle audio quiescent current automatization test system and method |
| CN114325043A (en) * | 2021-12-16 | 2022-04-12 | 华人运通(江苏)技术有限公司 | System and method for improving small current test precision |
| CN114325043B (en) * | 2021-12-16 | 2023-10-17 | 华人运通(江苏)技术有限公司 | System and method for improving small current test precision |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170822 Termination date: 20200125 |