CN101135571A - Correcting device - Google Patents
Correcting device Download PDFInfo
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- CN101135571A CN101135571A CNA2007101813856A CN200710181385A CN101135571A CN 101135571 A CN101135571 A CN 101135571A CN A2007101813856 A CNA2007101813856 A CN A2007101813856A CN 200710181385 A CN200710181385 A CN 200710181385A CN 101135571 A CN101135571 A CN 101135571A
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- correcting
- signal
- arithmetic element
- linear equation
- measuring equipment
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- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Abstract
The apparatus comprises: a control unit; a operational amplifier used for receiving an analog signal and amplifying the analog signal; a A/D converter connected to the operational amplifier and used for converting the analog signal to a digital signal; an arithmetic unit connected to the A/C converter in order to receive the digital signal, and used for generating a transformation equation to correct the offset of measured value.
Description
Technical field
The invention belongs to technical field of measuring, refer in particular to a kind of means for correcting that is used to proofread and correct measuring equipment.
Background technology
For existing technology, general measuring equipment is the weight of electronic type for example, or the measuring equipment of resistance, voltage, electric current, if because the cause of time causes assembly tired, may make measuring value deviation to some extent, but the user can't proofread and correct voluntarily, and therefore being necessary to propose a kind of means for correcting solves this problem.
Summary of the invention
The object of the present invention is to provide a kind of means for correcting, make user's measuring equipment of correcting action voluntarily.
For achieving the above object, described means for correcting comprises:
One control module,
One operational amplifier can receive an analog signal, and this analog signal is amplified;
One analog digital converting unit couples this operational amplifier, will amplify this analog signal and convert a digital signal to;
One arithmetic element, couple this analog digital converting unit to receive this digital signal, and couple this control module, wherein this this arithmetic element of control module may command is to enter a correction mode, make this arithmetic element to utilize and be received from two correction signals of this analog digital converting unit and obtain one first linear equation, and can utilize a measuring equipment to obtain one second linear equation, this arithmetic element utilizes this first linear equation and this second linear equation can obtain a transfer equation formula, after this arithmetic element is left this correction mode, this arithmetic element can receive one and measure signal from one of this analog digital converting unit, utilizes this transfer equation formula to change this measurements signal and obtains the measuring value of a correction.
The present invention person of being easy to use proofreaies and correct measuring equipment voluntarily because of the measuring value deviation that a variety of causes produces, and measuring value accurately is provided.
Description of drawings
Fig. 1 is a framed structure synoptic diagram of the present invention;
Fig. 2 is the internal circuit block diagram of means for correcting of the present invention.
Among the figure:
110 measuring equipments, 120 display screens
130 means for correctings, 140 display screens
150 transmitting devices, 210 control modules
220 operational amplifiers, 230 analog digital converting unit
240 arithmetic elements
Embodiment
As shown in Figure 1, the present invention includes measuring equipment 110, for example can measure weight, resistance or voltage, electric current, even or the device of temperature, measuring equipment 110 comprises a display screen 120, can show measuring value.One means for correcting 130 comprises a display screen 140, and via a signal transmitting device 150, for example a transmission line receives the electric signal from measuring equipment 110, and this electric signal may be voltage or electric current.
In an embodiment, measuring equipment 110 can measure weight, and timing measures a sample earlier, for example weigh 10 g counterweight, and transmit 0.11 volt voltage, measure another sample again to means for correcting 130, for example weigh 5 g counterweight, and transmit 0.08 volt voltage to means for correcting 130.So means for correcting 130 produces a linear equation: y1=m1*x1+n1 on weight/voltage coordinate figure, and wherein m1 is 0.006, and n1 is 0.05.The measuring equipment 110 of representing this deviation measures generation y1 volt voltage when heavily being x1 g.Above-mentioned twice measurement wherein once can not sampling, that is sees when weight is zero output voltage why.
10 g the counterweight but the correct piezoelectricity of measuring equipment 110 former factories relation is attached most importance to produces 0.1 volt voltage; Weigh 5 g counterweight, and produce 0.05 volt voltage.So produce another linear equation: y0=m0*x0+n0 on weight/voltage coordinate figure, wherein m0 is 0.01, and n1 is 0.Means for correcting 130 obtains such linear equation by measuring equipment 110.Can get a transfer equation formula according to above-mentioned two linear equations, can get correct measurement, and be presented at the display screen 140 of means for correcting 130 through conversion.
As shown in Figure 2, be that an embodiment is to illustrate the internal circuit of means for correcting.Control module 210, for example operation push-button is exported a controlling signal and is entered correction mode to arithmetic element 240, and arithmetic element 240 may be a microprocessor, or an Application Specific Integrated Circuit (ASIC).Operational amplifier 220 is received the simulation electronic signal from measuring equipment to be corrected (not icon), and this simulation electronic signal is inputed to analog digital converting unit 230, converts digital signal to, digital signal is exported to arithmetic element 240 again and does computing.Arithmetic element 240 can utilize two input values to obtain one first linear equation, and obtains second linear equation from former factory by measuring equipment, and two linear equations obtain a transfer equation formula thus.
When another controlling signal of control module 210 output to arithmetic element 240 to leave correction mode, and the simulation electronic signal of exporting a correspondence when measuring equipment to be corrected measures a sample is to operational amplifier 220, export analog digital converting unit 230 after the amplification to, convert digital signal to, again digital signal is exported to arithmetic element 240, the measuring value after can obtaining proofreading and correct via the transfer equation formula.Measuring value after this proofreaies and correct can be shown in a display device (not icon), and perhaps arithmetic element 240 is exported the pairing electric signal of measuring value after this correction by an output unit (not icon).
Claims (5)
1. the bearing calibration of a measuring equipment is characterized in that: comprise the following step:
One means for correcting is provided, can obtains one first correctiong signal and one second correctiong signal by a measuring equipment;
This means for correcting converts this first correctiong signal and this second correctiong signal to one first numerical value and a second value;
This means for correcting utilizes this first numerical value and this second value to obtain one first linear equation;
This means for correcting can utilize this measuring equipment to obtain one second linear equation; And
This means for correcting utilizes this first linear equation and this second linear equation to obtain a transfer equation formula, wherein when this means for correcting obtains a measurement signal by this measuring equipment, can utilize this transfer equation formula to obtain a measuring value of proofreading and correct.
2. means for correcting is characterized in that: comprise:
One control module,
One operational amplifier can receive an analog signal, and this analog signal is amplified;
One analog digital converting unit couples this operational amplifier, will amplify this analog signal and convert a digital signal to;
One arithmetic element, couple this analog digital converting unit to receive this digital signal, and couple this control module, wherein this this arithmetic element of control module may command is to enter a correction mode, make this arithmetic element to utilize and be received from two correction signals of this analog digital converting unit and obtain one first linear equation, and can utilize a measuring equipment to obtain one second linear equation, this arithmetic element utilizes this first linear equation and this second linear equation can obtain a transfer equation formula, after this arithmetic element is left this correction mode, this arithmetic element can receive one and measure signal from one of this analog digital converting unit, utilizes this transfer equation formula to change this measurements signal and obtains the measuring value of a correction.
3. according to the described means for correcting of claim 2, it is characterized in that: described control module comprises an operation push-button.
4. according to the described means for correcting of claim 2, it is characterized in that: described arithmetic element comprises a microprocessor.
5. according to the described means for correcting of claim 2, it is characterized in that: described arithmetic element comprises an Application Specific Integrated Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101813856A CN101135571A (en) | 2007-10-19 | 2007-10-19 | Correcting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101813856A CN101135571A (en) | 2007-10-19 | 2007-10-19 | Correcting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101135571A true CN101135571A (en) | 2008-03-05 |
Family
ID=39159782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101813856A Pending CN101135571A (en) | 2007-10-19 | 2007-10-19 | Correcting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101135571A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300980A (en) * | 2013-07-19 | 2015-01-21 | 比亚迪股份有限公司 | Electric automobile, and operation signal sampling method and AD conversion system thereof |
-
2007
- 2007-10-19 CN CNA2007101813856A patent/CN101135571A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300980A (en) * | 2013-07-19 | 2015-01-21 | 比亚迪股份有限公司 | Electric automobile, and operation signal sampling method and AD conversion system thereof |
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