CN108061817A - A kind of method, apparatus and vehicle of dark current measurement - Google Patents
A kind of method, apparatus and vehicle of dark current measurement Download PDFInfo
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- CN108061817A CN108061817A CN201711145130.4A CN201711145130A CN108061817A CN 108061817 A CN108061817 A CN 108061817A CN 201711145130 A CN201711145130 A CN 201711145130A CN 108061817 A CN108061817 A CN 108061817A
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- dark current
- resistance
- voltage value
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses the method, apparatus and vehicle of a kind of measurement of dark current, and for the measurement of vehicle static electric equilibrium, this method includes：Obtain the voltage value at resistance both ends；Wherein, the resistance series connection enters in the circuit of the parts to be tested；The numerical value of the dark current in the parts to be tested is calculated according to the resistance value of the resistance and the voltage value.Using this method carry out vehicle static electric equilibrium measurement when, it is necessary to test equipment it is simple and easy to get, obtain difficulty it is lower than electric equilibrium test equipment, using smaller cost can be completed measurement vehicle static electric equilibrium experiment.While vehicle static electric equilibrium measurement demand is met, cost has been saved.
Description
Technical field
The present invention relates to vehicle electric equilibrium to test field, more particularly to the measuring method and device of a kind of dark current.This
Invention further relates to a kind of vehicle of the device including the measurement of above-mentioned dark current.
Background technology
The experiment of vehicle electric equilibrium is divided into vehicle Static Electro balance and vehicle dynamic electric balancing a survey.At present in measurement is tested
All using special equipment, i.e. electric equilibrium test equipment.
Several different automobile types often are developed simultaneously when auto vendor carries out automotive development, in the construction cycle of each vehicle
It is required for doing a few wheel electric equilibrium experiments.And each vehicle is likely to discharged or defective battery phenomenon occur in the process of development, especially
Discharged or defective battery is even more and takes to be monitored each electrical appliance dark current for a long time (one month to two months) when being Static Electro balance
Concrete condition.Uninterrupted test when vehicle electric equilibrium equipment will be small to vehicle dark current data progress 24 in the process.
This every period, auto vendor are just very big for the demand of electric equilibrium test equipment.And this electric equilibrium is surveyed
It is expensive to try equipment price, it is also unpractical to purchase substantial amounts of electric equilibrium test equipment, may thus be generated because of electric equilibrium
Test equipment lazy weight and caused by delays in work problem.
Therefore, how a kind of lower-cost vehicle Static Electro balance measuring technology scheme is provided, static state is carried out meeting
Electric equilibrium is realized cost-effective while testing demand, is the current technical issues that need to address of those skilled in the art.
The content of the invention
The object of the present invention is to provide a kind of method and device of dark current measurement, to solve electric equilibrium equipment due to expensive
Lay in negligible amounts, it is impossible to the problem of doing Static Electro balance in time.It is a further object of the present invention to provide one kind to include above-mentioned dress
The vehicle put.
In order to solve the above technical problems, the present invention provides following technical solutions：
A kind of method of dark current measurement, for the measurement of vehicle static electric equilibrium, including：
Obtain the voltage value at resistance both ends；Wherein, the resistance series connection enters in the circuit of the parts to be tested；
The numerical value of the dark current in the parts to be tested is calculated according to the resistance value of the resistance and the voltage value.
Preferably, the voltage value for obtaining resistance both ends includes：
Data acquisition equipment obtains the voltage value at divider both ends；Wherein, the divider passes through twisted-pair feeder and institute
State data acquisition equipment connection；The range of the divider is twice of the nominal value of dark current described in the parts to be tested.
Preferably, the voltage value at the data acquisition equipment acquisition divider both ends includes：
The data acquisition equipment reads the voltage value at the divider both ends according to pre-set sample frequency；
The voltage value is formed into text file output；
Wherein, the range of the data acquisition equipment is twice of the nominal value of dark current described in the parts to be tested.
Preferably, when measuring vehicle dark current, the circuit that the resistance series connection enters the parts to be tested includes：
The resistance series connection enters accumulator front end.
A kind of device of dark current measurement, for the measurement of vehicle static electric equilibrium, including：
Resistance is accessed for connecting in the circuit of the parts to be tested；
Data acquisition equipment for obtaining the voltage value at the resistance both ends, and the voltage value is sent at data
Manage equipment；
Data processing equipment, for receiving the voltage value that the data acquisition equipment is sent, and according to the voltage
The numerical value of the dark current in the parts to be tested is calculated in the resistance value of value and the resistance.
Preferably, the resistance is divider, and the divider is connected by twisted-pair feeder with the data acquisition equipment；Institute
The range for stating divider is twice of dark current nominal value described in the parts to be tested.
Preferably, the data acquisition equipment is specifically used for reading the divider two according to pre-set sample frequency
The voltage value at end, and the voltage value is formed into text file, it is sent to the data processing equipment；Wherein, the number
It it is twice of the nominal value of dark current described in the parts to be tested according to the range of collecting device.
A kind of vehicle includes the device of the dark current measurement described in above-mentioned any one.
Compared with prior art, above-mentioned technical proposal has the following advantages：
A kind of method of dark current measurement provided by the present invention, including：Obtain the voltage value at resistance both ends；Wherein, institute
It states in the circuit that resistance series connection enters the parts to be tested；It is treated according to being calculated the resistance value of the resistance and the voltage value
Survey the numerical value of the dark current in component.Using this method carry out vehicle static electric equilibrium measurement when, it is necessary to test equipment letter
It is singly easy to get, acquisition difficulty is lower than electric equilibrium test equipment, and measurement vehicle static electric equilibrium can be completed using smaller cost
Experiment, has saved human cost.
The present invention also provides the device and vehicle of a kind of measurement of dark current, including advantage possessed by the above method, herein
It repeats no more.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also basis
These attached drawings obtain other attached drawings.
The method flow diagram for the dark current measurement that Fig. 1 is provided for a kind of specific embodiment of the present invention；
The method flow diagram for the dark current measurement that Fig. 2 is provided for another specific embodiment of the invention；
The structure chart of the device for the dark current measurement that Fig. 3 is provided for a kind of specific embodiment of the present invention；
Fig. 4 is schematic diagram when Fig. 3 shown devices are in running order.
Specific embodiment
The core of the present invention is to provide a kind of method and device of dark current measurement, and cost is relatively low.The present invention's is another
Core is to provide a kind of vehicle including above device.
It is understandable in order to which the above objects, features and advantages of the present invention is enable to become apparent, below in conjunction with the accompanying drawings to this hair
Bright specific embodiment is described in detail.
Detail is elaborated in the following description in order to fully understand the present invention.But the present invention can with it is a variety of not
Other manner described here is same as to implement, those skilled in the art can do class without violating the connotation of the present invention
Like popularization.Therefore the present invention is not limited to the specific embodiments disclosed below.
It please refers to Fig.1, the method flow diagram for the dark current measurement that Fig. 1 is provided for a kind of specific embodiment of the present invention,
This method includes：
Step 101：Obtain the voltage value at resistance both ends；
Wherein, which enters in the circuit of the parts to be tested.
It should be noted that method provided by the present invention can both be individually used for the measurement of a certain parts dark current,
Measurement available for vehicle dark current.
Electric equilibrium, that is, automotive electrical system charge balance.Here automobile electric appliance system refers to accumulator and power generation
Machine, starter, all vehicle-mounted electrical equipments or power-consuming component.When vehicle stall is parked, vehicle only has one power supply of accumulator.
During therefore, it is necessary to measure vehicle dark current, resistance series connection enters the front end of accumulator；Need independent measurement some zero
During part, resistance series connection enters in the circuit of the parts.
After resistance series connection is entered in the circuit of the parts to be tested, the dark current in the parts to be tested flows through the resistance, you can
Resistance both ends obtain voltage signal, the voltage value at resistance both ends are obtained, so as to subsequent calculating processing.
Step 102：The numerical value of the dark current in the parts to be tested is calculated according to the resistance value of resistance and voltage value.
According to the resistance value of the voltage value obtained in step 101 and the resistance used, can be calculated needs to measure
Component in dark current numerical value.For example, the resistance value of the resistance used is R, the voltage value got is V, then portion to be measured
The computational methods of the numerical value I of dark current in part are：I=V/R.
It after obtaining the numerical value of dark current, can analyze it, and then draw the power consumption situation of vehicle part.Into one
Step, is averaged in order to which the computational accuracy for improving final dark current can be calculated repeatedly.
In the method for dark current measurement provided in the present embodiment, accessed by connecting in the parts to be tested circuit
The numerical value of the dark current in the parts to be tested is calculated in the resistance value of resistance and the voltage value at resistance both ends.This method operates
Simplicity, cost is relatively low, and equipment acquisition difficulty is relatively low.Using this method, standing several resistance are only needed, when electric equilibrium test equipment
Allotment then, only need to not can carry out Static Electro blance test using data acquisition equipment, then by simply calculating, you can
The numerical value of dark current into the parts to be tested, it is effective to solve the problems, such as the delays in work caused by electric equilibrium number of devices is few.
And the present embodiment Computational Methods are simple, can quickly acquire the numerical value of dark current, and it is applied widely, it can not only measure whole
Vehicle dark current can also measure the dark current of each device in vehicle.
Based on above-described embodiment, in order to improve measuring accuracy, convenience degree.Resistance can specifically be selected in the present embodiment
Divider.Be because divider vehicle electric equilibrium measurement experiment in be relatively easy to obtain, and access circuit in difficulty compared with
It is low.It specifically please refers to Fig.2, the method flow diagram for the dark current measurement that Fig. 2 is provided for another specific embodiment of the invention,
This method includes：
Step 201：The voltage value at divider both ends is read according to pre-set sample frequency；
It should be noted that when the resistance that series connection is accessed in the parts to be tested is divider, two main electrical schemes of divider
In the circuit of column series connection access the parts to be tested, the voltage measurement end of two secondary binding post access data acquisition equipments of divider
Mouthful.When dark current flows through divider, the secondary binding post both ends of divider obtain voltage value, the voltage measurement of data acquisition equipment
Port can obtain the voltage value.
The secondary binding post of two of divider can be accessed by twisted-pair feeder in data acquisition equipment, to reduce voltage signal
Loss.Certainly, the connection mode that can also use other that can reduce the loss of signal in the application other embodiment, the two
Connection mode has no effect on the realization of the application specific embodiment.
Wherein, the range of divider and data measuring apparatus can the nominal value of dark current carries out in the parts to be tested according to
Selection, it can so reduce the error of device measuring data.Specifically, the range of divider and data acquisition equipment is to treat
Survey dark current nominal value in component twice.Such as：A certain the parts to be tested dark current nominal value is 3mA, then divider selects
3mA*2=6mA, the range specification of data acquisition equipment are identical with divider.It if, can be according to actual survey without correspondingly specification
Need to select close specification in amount.
Data acquisition equipment can pre-set sample frequency, and specific sample frequency numerical value can be according to vehicle static
Depending on needs in the actual measurement process of electric equilibrium, suitable sample frequency is selected, divider pair is read according to the sample frequency
The voltage value at binding post both ends.
Step 202：Voltage value is formed into text file output；
Data acquisition equipment constantly records the voltage value got, forms text file and is exported, at data
Manage the processing that equipment carries out data using the voltage value.Wherein, the acquisition precision of data acquisition equipment can be by user according to reality
Border situation is determined.
Step 203：The numerical value of the dark current in the parts to be tested is calculated according to the resistance value of resistance and voltage value.
According in measurement process using to resistance resistance value and obtained voltage value, the parts to be tested can be calculated
The numerical value of middle dark current.
Data acquisition equipment is acquired the voltage value at divider both ends according to pre-set frequency acquisition, then passes through
Calculating can obtain the larger dark current numerical value of sample size.And resistance be divider when, twisted-pair feeder may be employed by itself and number
It is attached according to collecting device, the loss for the voltage signal that such data acquisition equipment obtains is smaller, the dark current being calculated
Numerical value error it is also smaller.The sample size of the numerical value of the dark current finally obtained is larger, and error is small, convenient for dark current
Data be monitored, its situation of change is studied, is had so as to be carried out to the power consumption situation of the parts to be tested more accurate
The analysis of body.
In the method for dark current measurement provided in the present embodiment, according to pre-set in data acquisition equipment
Frequency acquisition is acquired the voltage value at divider both ends, and divider is connected by twisted-pair feeder with data acquisition equipment, letter
Number loss is small, thus in obtained the parts to be tested dark current numerical value sample size it is more, the regularity of distribution, and error is smaller, just
It is more specifically analyzed in the power consumption situation to the parts to be tested.
It please refers to Fig.3 and the device of dark current measurement that Fig. 4, Fig. 3 are provided for a kind of specific embodiment of the present invention
Structure chart, Fig. 4 are schematic diagram when Fig. 3 shown devices are in running order, which includes：
Resistance is accessed for connecting in the circuit of the parts to be tested；
Voltage value for obtaining the voltage value at resistance both ends, and is sent to data processing equipment by data acquisition equipment；
Data processing equipment, for receiving the voltage value of data acquisition equipment transmission, and according to voltage value and the electricity of resistance
The numerical value of the dark current in the parts to be tested is calculated in resistance value.
It should be noted that the device can be individually used for the measurement of a certain parts dark current, it can also be used to which vehicle is secretly electric
The measurement of stream.When being individually used for measuring a certain parts, resistance series connection enters in the circuit of the parts；For vehicle dark current
Measurement when, resistance series connection enters accumulator front end.And the present embodiment not to the processing accuracy of resistance, data acquisition equipment into
Row limits, and user can make choice according to the actual dark current numerical value situation of actual measurement demand and measurement device.
Wherein, data acquisition equipment can be integrated into an equipment with data processing equipment, using the integrated equipment
It obtains the voltage value at resistance both ends and the processing of data is carried out according to the resistance value of voltage value and the resistance used, treated
Survey the numerical value of dark current in component.
Present embodiment provides a kind of device of dark current measurement, and resistance both ends are obtained by data acquisition equipment
Voltage value, wherein, resistance series connection enters in the circuit of the parts to be tested.Then voltage value is sent to data processing equipment to carry out
It calculates, obtains the numerical value of dark current in the parts to be tested.The device is while the measurement experiment of vehicle static electric equilibrium is met, cost
It is relatively low.
Optionally, in another embodiment of the present invention, resistance is divider.
It should be noted that in the circuit of two main terminals series connection access the parts to be tested of divider, two secondary wiring
Column can be connected by twisted-pair feeder with data acquisition equipment, to reduce the loss of signal.
The range of divider makes choice for the nominal value of the dark current in the parts to be tested.Specifically, divider
Range be twice of the nominal value of the dark current in the parts to be tested.
Data acquisition equipment is read out the voltage value at divider both ends according to pre-set frequency acquisition, then by electricity
Pressure, which is worth, to be formed text file and is sent to data processing equipment, is calculated, obtained after receiving voltage value so as to data processing equipment
The numerical value of dark current into the parts to be tested, subsequently to provide condition to the analysis of the dark current in the parts to be tested.
Optionally, the range of data acquisition equipment is twice of the nominal value of the dark current in the parts to be tested.
Present embodiment provides a kind of device of dark current measurement, and data acquisition equipment is adopted according to pre-set
The voltage value at sample frequency acquisition divider both ends, and voltage value formation text file is sent to data processing equipment, to count
The numerical value of dark current in the parts to be tested is calculated according to the resistance value of voltage value and resistance according to processing equipment.The device is difficult using obtaining
The numerical value that relatively low equipment can obtain dark current in the parts to be tested is spent, and cost is relatively low.Obtain dark current in the parts to be tested
After numerical value, the power consumption situation of the parts to be tested can be made a concrete analysis of.
The present invention also provides a kind of vehicles, include the device that the dark current described in above-mentioned specific embodiment measures.
Include the device of the dark current measurement in above-mentioned specific embodiment due to vehicle disclosed by the invention, it should
The vehicle disclosed by the invention of advantageous effect possessed by device is included.
The method, apparatus and vehicle of a kind of dark current measurement provided by the present invention are described in detail above.
Specific case used herein is set forth the principle of the present invention and embodiment, and the explanation of above example is simply used
Understand the method and its core concept of the present invention in help.It should be pointed out that for those skilled in the art,
Without departing from the principle of the present invention, can also to the present invention some improvement and modification can also be carried out, these improvement and modification
It falls into the protection domain of the claims in the present invention.
Claims (8)
1. a kind of method of dark current measurement, for the measurement of vehicle static electric equilibrium, which is characterized in that including：
Obtain the voltage value at resistance both ends；Wherein, the resistance series connection enters in the circuit of the parts to be tested；
The numerical value of the dark current in the parts to be tested is calculated according to the resistance value of the resistance and the voltage value.
2. according to the method described in claim 1, it is characterized in that, the voltage value for obtaining resistance both ends includes：
Data acquisition equipment obtains the voltage value at divider both ends；Wherein, the divider passes through twisted-pair feeder and the number
It is connected according to collecting device；The range of the divider is twice of the nominal value of dark current described in the parts to be tested.
3. according to the method described in claim 2, it is characterized in that, the data acquisition equipment obtains the described of divider both ends
Voltage value includes：
The data acquisition equipment reads the voltage value at the divider both ends according to pre-set sample frequency；
The voltage value is formed into text file output；
Wherein, the range of the data acquisition equipment is twice of the nominal value of dark current described in the parts to be tested.
4. according to the method described in claims 1 to 3 any one, which is characterized in that when measuring vehicle dark current, the electricity
The circuit of resistance series connection access the parts to be tested includes：
The resistance series connection enters accumulator front end.
5. a kind of device of dark current measurement, for the measurement of vehicle static electric equilibrium, which is characterized in that including：
Resistance is accessed for connecting in the circuit of the parts to be tested；
The voltage value for obtaining the voltage value at the resistance both ends, and is sent to data processing and set by data acquisition equipment
It is standby；
Data processing equipment, for receiving the voltage value that the data acquisition equipment is sent, and according to the voltage value and
The numerical value of the dark current in the parts to be tested is calculated in the resistance value of the resistance.
6. device according to claim 5, which is characterized in that the resistance is divider, and the divider passes through multiple twin
Line is connected with the data acquisition equipment；The range of the divider is two of dark current nominal value described in the parts to be tested
Times.
7. device according to claim 6, which is characterized in that the data acquisition equipment is specifically used for basis and pre-sets
Sample frequency read the voltage value at the divider both ends, and the voltage value is formed into text file, is sent to institute
State data processing equipment；Wherein, the range of the data acquisition equipment is the nominal value of dark current described in the parts to be tested
Twice.
8. a kind of vehicle, which is characterized in that include the device of the dark current measurement as described in claim 5 to 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711145130.4A CN108061817A (en) | 2017-11-17 | 2017-11-17 | A kind of method, apparatus and vehicle of dark current measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711145130.4A CN108061817A (en) | 2017-11-17 | 2017-11-17 | A kind of method, apparatus and vehicle of dark current measurement |
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| Publication Number | Publication Date |
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| CN108061817A true CN108061817A (en) | 2018-05-22 |
Family
ID=62135831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711145130.4A Pending CN108061817A (en) | 2017-11-17 | 2017-11-17 | A kind of method, apparatus and vehicle of dark current measurement |
Country Status (1)
| Country | Link |
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| CN (1) | CN108061817A (en) |
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| CN111880040A (en) * | 2020-08-17 | 2020-11-03 | 三一重机有限公司 | Dark current testing system and method and engineering machinery |
| CN116338286A (en) * | 2023-05-29 | 2023-06-27 | 成都光创联科技有限公司 | Dark current detection circuit and dark current detection method for optical device |
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