CN102608403B - Error detection method and system of reference voltage - Google Patents
Error detection method and system of reference voltage Download PDFInfo
- Publication number
- CN102608403B CN102608403B CN201210047492.0A CN201210047492A CN102608403B CN 102608403 B CN102608403 B CN 102608403B CN 201210047492 A CN201210047492 A CN 201210047492A CN 102608403 B CN102608403 B CN 102608403B
- Authority
- CN
- China
- Prior art keywords
- reference voltage
- voltage
- error
- digital
- analog
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The embodiment of the invention discloses an error detection method of a reference voltage, which comprises the steps of: dividing a first reference voltage provided by a first reference voltage source into a first voltage according to a preset voltage dividing coefficient; and detecting an error of the first voltage, figuring out an error of the first reference voltage according to a formula that the error of the first reference voltage is equal to the product obtained by multiplying the error of the first voltage by the 1/voltage dividing coefficient. The embodiment of the invention also discloses an error detection system of the reference voltage. By adopting the invention, through detecting the error of the reference voltage, the accuracy of simulating signal acquisition or voltage comparison can be improved.
Description
Technical field
The present invention relates to circuit design field, relate in particular to a kind of error detection method and system of reference voltage.
Background technology
The circuit such as analogue signal acquisition circuit or voltage comparator circuit in circuit design, all need a reference voltage as signals collecting or voltage ratio reference voltage, this reference voltage can be provided by reference voltage sources such as HF switch voltage source or linear voltage sources.
Inventor finds in actual applications, in collection of simulant signal or voltage comparator circuit there is the problem that precision is not high in reference voltage source used, the theoretical principle voltage of the reference voltage source of for example selecting is 3V, and actual reference voltage may only have 2.7V in its application; There is the problem that precision is not high in the reference voltage providing due to reference voltage source, will cause in collection of simulant signal or voltage ratio process, occurring gathering mistake or comparison error.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, a kind of error detection method and system of reference voltage is provided, and by the error of detection reference voltage, can improve collection of simulant signal or voltage ratio accuracy.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of error detection method of reference voltage, comprising:
The the first reference voltage dividing potential drop the first reference voltage source being provided according to predetermined dividing potential drop coefficient is the first voltage;
Detect the error of described the first voltage, and according to formula: the error * 1/ dividing potential drop coefficient of error=the first voltage of the first reference voltage, calculates the error of described the first reference voltage
Correspondingly, the embodiment of the present invention also provides a kind of error detecting system of reference voltage, comprising:
Bleeder circuit, the first reference voltage dividing potential drop the first reference voltage source being provided for the dividing potential drop coefficient according to predetermined is the first voltage;
Treating apparatus, for detection of the error of described the first voltage, and according to formula: the error * 1/ dividing potential drop coefficient of error=the first voltage of the first reference voltage, calculates the error of described the first reference voltage.
Implement the embodiment of the present invention, there is following beneficial effect:
The embodiment of the present invention is the first voltage by the dividing potential drop coefficient according to predetermined by the first reference voltage dividing potential drop, and the error of the first voltage is detected, and according to formula: the error * 1/ dividing potential drop coefficient of error=the first voltage of the first reference voltage, calculates the error of described the first reference voltage; Because the embodiment of the present invention is by the error-detecting to the first voltage, and then the error of the first reference voltage detected, therefore can collection of simulant signal or voltage ratio compared with time, can be by the collection result of the error correction simulating signal of the first reference voltage or voltage ratio comparative result, thus collection accuracy or the voltage ratio accuracy of simulating signal improved.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the embodiment of the error detecting system of reference voltage of the present invention;
Fig. 2 is the schematic flow sheet of the embodiment of the error detection method of reference voltage of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, is the structural representation of the embodiment of the error detecting system of reference voltage of the present invention, and this error detecting system mainly comprises: bleeder circuit 1 and treating apparatus 2.
The first reference voltage dividing potential drop that wherein bleeder circuit 1 is mainly used according to predetermined dividing potential drop coefficient, the first reference voltage source being provided is the first voltage.
Particularly, first reference voltage that the first reference voltage source can be provided is loaded on the input end of bleeder circuit 1, and bleeder circuit 1 is the first voltage according to predetermined dividing potential drop coefficient by the first reference voltage step-down, and output.As shown in Figure 1, in one embodiment, bleeder circuit 1 comprises: the first resistance unit 11 and the second resistance unit 12; The first resistance unit 11 and the second resistance unit 12 are connected, and one end of the first resistance unit 11, as the input end of bleeder circuit 1, is connected to the first reference voltage source, the first reference voltage providing for receiving the first reference voltage source; The other end of the second resistance unit 11 is connected to one end of the second resistance unit 12, and the other end of the second resistance unit 12 is connected to ground; The first resistance unit 11 and second interconnective one end of resistance unit 12 are the output terminal of bleeder circuit 1, for exporting the first voltage.It should be noted that, predetermined dividing potential drop coefficient is determined by the resistance of the first resistance unit 11 and the second resistance unit 12, the resistance of supposing the first resistance unit 11 is R1, the resistance of the second resistance unit is R2, predetermined dividing potential drop coefficient is R2/ (R1+R2), the first voltage=reference voltage * R2/ (R1+R2).Also it should be noted that, the first resistance unit 11 and the second resistance unit 12 all can be made up of the mutual series, parallel of one or more resistance or connection in series-parallel, in order to improve the precision of voltage transitions, the error rate of the resistance of the first resistance unit 11 and the second resistance unit 12 can be controlled at 0.1% left and right simultaneously.
Wherein treating apparatus 2 is mainly for detection of the error of described the first voltage, and according to the error of described the first voltage and described dividing potential drop coefficient, calculates described the first reference voltage.
Particularly, treating apparatus 2 can comprise: the first analog to digital converter 21, processor 24, the second reference voltage source 26, the second analog to digital converter 25, the 3rd reference voltage source 22 and the 3rd analog to digital converter 23.
The two ends of the first analog to digital converter 21 are connected to respectively output terminal and the processor 24 of bleeder circuit 1, for the first voltage is carried out to analog to digital conversion, obtain the first digital voltage, and export the first digital voltage to processor 24.
The two ends of the second analog to digital converter 25 are connected to respectively the second reference voltage source 26 and processor 24, carry out analog to digital conversion for the second reference voltage that the second reference voltage source 26 is provided, obtain the second numerical reference voltage, and by the second numerical reference Voltage-output to processor 24.It should be noted that, the second reference voltage source 26 is high-precision reference voltage source, and its precision is higher than the first reference voltage source that the first reference voltage is provided; Can to adopt precision be that 99.9% reference voltage source is realized to the second reference voltage source 26 particularly.Also it should be noted that, the theoretical principle voltage of supposing the first reference voltage source is second voltage by the voltage of predetermined dividing potential drop relationship conversion one-tenth, be second voltage=theoretical principle voltage * R2/ (R1+R2), the second reference voltage is less than second voltage so.
The two ends of the 3rd analog to digital converter 23 are connected to respectively the 3rd reference voltage source 22 and processor 24, carry out analog to digital conversion for the 3rd reference voltage that the 3rd reference voltage source 22 is provided, obtain the 3rd numerical reference voltage, and by the 3rd numerical reference Voltage-output to processor 24.It should be noted that, the 3rd reference voltage source 22 is high-precision reference voltage source, and its precision is higher than the first reference voltage source that the first reference voltage is provided; Can to adopt precision be 99.9% reference voltage source to the 3rd reference voltage source particularly.Also it should be noted that, the 3rd reference voltage is greater than second voltage.
Processor 24, for synthesizing digital reference voltage by the second numerical reference voltage and the 3rd numerical reference voltage, this digital reference voltage equals second voltage to carry out the second digital voltage of analog to digital conversion one-tenth.It should be noted that, because digital reference voltage is synthetic by the second numerical reference voltage and the 3rd numerical reference voltage, therefore the precision of digital reference voltage is greater than the minimum value in the precision of the second numerical reference voltage and the 3rd numerical reference voltage.For instance, suppose that the second reference voltage that the second reference voltage source provides is 1V, the 3rd reference voltage that the 3rd reference voltage source provides is 2V, the precision of the second reference voltage source and the 3rd reference voltage source is 99.9%, and the precision of 1.5 the reference voltage being obtained by the second reference voltage 1V and the 3rd reference voltage 2V will be higher than 99.9%.It should be noted that, processor 24 can adopt formula: digital reference voltage=coefficient 1* second numerical reference voltage+coefficient 2* the 3rd numerical reference voltage, wherein coefficient 1+ coefficient 2=1, generates the arbitrary voltage between the second numerical reference voltage and the 3rd numerical reference voltage.
Described processor 24, also for the first digital voltage and digital reference voltage are compared, to detect the error of the first voltage, and according to the error of the first voltage and described dividing potential drop coefficient, calculates the error of the first reference voltage.Particularly, processor 24, by analyzing the first digital voltage and digital reference voltage, can obtain the error of the first digital voltage, then the error of the first digital voltage is become to the error of face the first voltage by analog to digital conversion; Can reverse push calculate the error of the first reference voltage according to the error of the first voltage and predetermined dividing potential drop coefficient, for example: the error of the first voltage is Δ V, predetermined dividing potential drop coefficient is R2/ (R1+R2), so error=Δ V* (1+R1/R2) of the first reference voltage.
The present embodiment is by detecting the error of the first voltage, and then calculate the error of the first reference voltage, thereby when this reference voltage is during as reference voltage of simulating signal or voltage ratio, due to the error of known reference voltage, can be in collection of simulant signal or voltage ratio in the software processing procedure after, revise the value of reference voltage, to improve the accuracy of final collection of simulant signal or voltage comparative result.
Please refer to Fig. 2, is the schematic flow sheet of the second embodiment of the error detection method of reference voltage of the present invention, and described method comprises:
Step S11, the first reference voltage dividing potential drop the first reference voltage source being provided according to predetermined dividing potential drop coefficient is the first voltage.
Wherein, step S11 can be realized by the bleeder circuit 1 in Fig. 1, is not repeated herein.
Step S12, detects the error of described the first voltage, and according to formula: the error * 1/ dividing potential drop coefficient of error=the first voltage of the first reference voltage, calculates the error of described the first reference voltage.
Wherein, step S12 comprises particularly:
A, described the first voltage is carried out to analog to digital conversion, obtain the first digital voltage.
B, the second reference voltage that the second reference voltage source is provided carry out analog to digital conversion, obtain the second numerical reference voltage, described the second reference voltage is less than described second voltage, and the precision of described the second reference voltage source is greater than the precision of described the first reference voltage source.
C, the 3rd reference voltage that the 3rd reference voltage source is provided carry out analog to digital conversion, obtain the 3rd numerical reference voltage, described the 3rd reference voltage is greater than described second voltage, and the precision of described the 3rd reference voltage source is greater than the precision of described the first reference voltage source;
D, by the synthetic described digital reference voltage of described the second numerical reference voltage and the 3rd numerical reference voltage, the size of described digital reference voltage is between described the second numerical reference voltage and the 3rd numerical reference voltage.
E, described the first digital voltage and digital reference voltage are compared, obtain the error of described the first digital voltage, described digital reference voltage carries out the second digital voltage obtaining after analog to digital conversion after equaling, according to described dividing potential drop coefficient, the theoretical principle voltage dividing potential drop of described the first reference voltage source is second voltage to described second voltage;
F, the error of described the first digital voltage is carried out to analog to digital conversion, obtain the error of described the first voltage, and according to formula: the error * 1/ dividing potential drop coefficient of error=the first voltage of the first reference voltage, calculates the error of described the first reference voltage.
Particularly, the said process of step S12 can be realized by the treating apparatus 2 in Fig. 1, is not repeated herein.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can carry out the hardware that instruction is relevant by computer program to complete, described program can be stored in a computer read/write memory medium, this program, in the time carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and the equivalent variations of doing according to the claims in the present invention, still belong to the scope that invention is contained.
Claims (4)
1. an error detection method for reference voltage, is characterized in that, comprising:
The the first reference voltage dividing potential drop the first reference voltage source being provided according to predetermined dividing potential drop coefficient is the first voltage;
Detect the error of described the first voltage, and according to formula: the error * 1/ dividing potential drop coefficient of error=the first voltage of the first reference voltage, calculates the error of described the first reference voltage;
The operation of the error of described the first voltage of described detection comprises:
Described the first voltage is carried out to analog to digital conversion, obtain the first digital voltage;
Described the first digital voltage and digital reference voltage are compared, obtain the error of described the first digital voltage, described digital reference voltage carries out the second digital voltage obtaining after analog to digital conversion after equaling, according to described dividing potential drop coefficient, the theoretical principle voltage dividing potential drop of described the first reference voltage source is second voltage to described second voltage;
The error of described the first digital voltage is carried out to analog to digital conversion, obtain the error of described the first voltage.
2. the method for claim 1, is characterized in that, the operation of the error of described the first voltage of described detection also comprises:
The second reference voltage that the second reference voltage source is provided carries out analog to digital conversion, obtains the second numerical reference voltage, and described the second reference voltage is less than described second voltage, and the precision of described the second reference voltage source is greater than the precision of described the first reference voltage source;
The 3rd reference voltage that the 3rd reference voltage source is provided carries out analog to digital conversion, obtains the 3rd numerical reference voltage, and described the 3rd reference voltage is greater than described second voltage, and the precision of described the 3rd reference voltage source is greater than the precision of described the first reference voltage source;
By described the second numerical reference voltage and the synthetic described digital reference voltage of the 3rd numerical reference voltage, the size of described digital reference voltage is between described the second numerical reference voltage and the 3rd numerical reference voltage.
3. an error detecting system for reference voltage, is characterized in that, comprising:
Bleeder circuit, the first reference voltage dividing potential drop the first reference voltage source being provided for the dividing potential drop coefficient according to predetermined is the first voltage;
Treating apparatus, for detection of the error of described the first voltage, and according to formula: the error * 1/ dividing potential drop coefficient of error=the first voltage of the first reference voltage, calculates the error of described the first reference voltage;
Described treating apparatus comprises:
The first analog to digital converter, for described the first voltage is carried out to analog to digital conversion, obtains the first digital voltage;
Processor, for described the first digital voltage and digital reference voltage are compared, obtain the error of described the first digital voltage, after described digital reference voltage equals, according to described dividing potential drop coefficient, the theoretical principle voltage dividing potential drop of described the first reference voltage source is second voltage, described second voltage is carried out to the second digital voltage of obtaining after analog to digital conversion;
Described processor, also for the error of described the first digital voltage is carried out to analog to digital conversion, obtain the error of described the first voltage, and according to formula: the error * 1/ dividing potential drop coefficient of error=the first voltage of the first reference voltage, calculates the error of described the first reference voltage.
4. error detecting system as claimed in claim 3, is characterized in that, described treating apparatus also comprises:
The second analog to digital converter, carry out analog to digital conversion for the second reference voltage that the second reference voltage source is provided, obtain the second numerical reference voltage, described the second reference voltage is less than described second voltage, and the precision of described the second reference voltage source is greater than the precision of described the first reference voltage source;
The 3rd analog to digital converter, carry out analog to digital conversion for the 3rd reference voltage that the 3rd reference voltage source is provided, obtain the 3rd numerical reference voltage, described the 3rd reference voltage is greater than described second voltage, and the precision of described the 3rd reference voltage source is greater than the precision of described the first reference voltage source;
Described processor, also, for described the second numerical reference voltage and the 3rd numerical reference voltage are synthesized to described digital reference voltage, the size of described digital reference voltage is between described the second numerical reference voltage and the 3rd numerical reference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210047492.0A CN102608403B (en) | 2012-02-27 | 2012-02-27 | Error detection method and system of reference voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210047492.0A CN102608403B (en) | 2012-02-27 | 2012-02-27 | Error detection method and system of reference voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102608403A CN102608403A (en) | 2012-07-25 |
| CN102608403B true CN102608403B (en) | 2014-07-09 |
Family
ID=46525930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210047492.0A Active CN102608403B (en) | 2012-02-27 | 2012-02-27 | Error detection method and system of reference voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102608403B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231510A (en) * | 2018-03-05 | 2019-09-13 | 无锡华润矽科微电子有限公司 | Improve the calibration system and method for chip interior reference voltage value precision |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267249A (en) * | 2014-10-09 | 2015-01-07 | 长智光电（四川）有限公司 | Device for measuring voltage difference between LED string lights |
| CN110471482B (en) * | 2019-08-12 | 2020-10-02 | 兆讯恒达微电子技术(北京)有限公司 | Voltage calibration method and calibration circuit |
| CN116185119B (en) * | 2023-04-23 | 2023-07-21 | 深圳市九天睿芯科技有限公司 | CIM-based voltage regulating circuit, chip and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275975A (en) * | 2008-04-18 | 2008-10-01 | 上海闻泰电子科技有限公司 | Mobile phone cell low-voltage testing circuit |
| CN202025338U (en) * | 2011-01-30 | 2011-11-02 | 北京阿尔泰科技发展有限公司 | Data acquisition card calibration device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2246984B1 (en) * | 2009-04-28 | 2013-07-03 | VEGA Grieshaber KG | Diagnosis apparatus for monitoring an analogue-digital conversion apparatus |
-
2012
- 2012-02-27 CN CN201210047492.0A patent/CN102608403B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275975A (en) * | 2008-04-18 | 2008-10-01 | 上海闻泰电子科技有限公司 | Mobile phone cell low-voltage testing circuit |
| CN202025338U (en) * | 2011-01-30 | 2011-11-02 | 北京阿尔泰科技发展有限公司 | Data acquisition card calibration device |
Non-Patent Citations (4)
| Title |
|---|
| CMOS带隙电压基准的误差及其改进;陈浩琼 等;《固体电子学研究与进展》;20051130;第25卷(第4期);全文 * |
| 唐慧强.精密电压测量中自校正技术的研究.《测控技术》.2003,第22卷(第2期),16-18. |
| 精密电压测量中自校正技术的研究;唐慧强;《测控技术》;20030228;第22卷(第2期);全文 * |
| 陈浩琼 等.CMOS带隙电压基准的误差及其改进.《固体电子学研究与进展》.2005,第25卷(第4期),531-535. |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231510A (en) * | 2018-03-05 | 2019-09-13 | 无锡华润矽科微电子有限公司 | Improve the calibration system and method for chip interior reference voltage value precision |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102608403A (en) | 2012-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102608403B (en) | Error detection method and system of reference voltage | |
| CN205229440U (en) | A detecting system for detecting partial discharge detector | |
| CN202059389U (en) | Voltage sampling circuit | |
| CN102207518A (en) | Method and device for detecting effective value of alternating current (AC) voltage | |
| CN104698276A (en) | Resistor verifying system | |
| CN112066862A (en) | Position calibration method and device for linear displacement steering engine and terminal | |
| CN202372568U (en) | Dynamic data acquisition device | |
| CN102680910A (en) | Supply current detection method and circuit | |
| CN103684458A (en) | Analog-digital converter protective circuit, digital power supply, method and module for processing digital signals and method for protecting circuit | |
| CN204954834U (en) | Underactuated artificial limb hand embedded control device | |
| CN114362553A (en) | Power acquisition circuit and method of radio frequency power supply | |
| CN101216993B (en) | A monitoring method and device for the analog interference elimination of the device | |
| CN105303049A (en) | Rod position value calibration method and system of control rod | |
| CN204346584U (en) | Light change-over switch input wide region optical power detection apparatus | |
| CN104483696A (en) | Digital pulse amplitude analyzer | |
| CN205430401U (en) | High -speed image processing system | |
| CN111721210B (en) | Initialization method, device, equipment and medium after conversion of logical raster resolution | |
| CN104422883A (en) | Motor desynchronizing detection method and detection device | |
| CN102521466A (en) | Method and system for simulation of diffusion resistor | |
| CN103471822B (en) | A kind of multiplying power pick-up unit for manual continuous zoom lens | |
| CN110567362A (en) | automatic amplitude modulation method, system and medium applied to induction synchronizer | |
| CN105277908A (en) | Three-axis current sensor signal calibration method | |
| CN218673733U (en) | Processing circuit for temperature and humidity acquisition and temperature and humidity detection device | |
| CN202034957U (en) | Adjustable hysteresis comparator | |
| CN101915864B (en) | Vector oscilloscope device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211105 Address after: 518043 No. 01, 39th floor, building a, antuoshan headquarters building, No. 33, antuoshan Sixth Road, Xiang'an community, Xiangmihu street, Futian District, Shenzhen, Guangdong Province Patentee after: Huawei Digital Energy Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
|
| TR01 | Transfer of patent right |