CN106873473A - A kind of whole intelligent zeroing circuit of continuously adjustabe - Google Patents
A kind of whole intelligent zeroing circuit of continuously adjustabe Download PDFInfo
- Publication number
- CN106873473A CN106873473A CN201710221868.8A CN201710221868A CN106873473A CN 106873473 A CN106873473 A CN 106873473A CN 201710221868 A CN201710221868 A CN 201710221868A CN 106873473 A CN106873473 A CN 106873473A
- Authority
- CN
- China
- Prior art keywords
- circuit
- analog signal
- input resistance
- resistance network
- continuously adjustabe
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
The present invention is a kind of whole intelligent zeroing circuit of continuously adjustabe, and described circuit includes analog signal sensors, input resistance network and amplifying circuit of analog signal；Described analog signal sensors are connected with input resistance network；Described input resistance network is connected with amplifying circuit of analog signal；Described input resistance network is connected to the ground；The reference voltage end of the input resistance network is connected with amplifying circuit.Belong to electronic technology field.Purpose is to provide a kind of whole intelligent zeroing circuit of continuously adjustabe.
Description
Technical field
The present invention relates to a kind of zeroing circuit, the more particularly to high-accuracy zeroing circuit of the whole intelligence of continuously adjustabe.
Background technology
Existing analog signal sensors, are all, by input resistance network, to be input to signal amplification circuit.In input electricity
Hinder one end of network, by adjustable resistance or digital regulation resistance, add reference voltage adjust sensor discrete discrepancy and
System deviation.By both deviations be analog sensor intrinsic, therefore almost all of measuring circuit, this is all used at present
Plant zero adjustment circuit, abbreviation zeroing circuit.But existing zeroing circuit has two drawbacks, first, because reference voltage is solid
It is fixed, directly realized by a reference source or by the partial pressure to a reference source, but due to the general very little of the deviation voltage of zero point, from
Between the mV of several mV to hundreds of, or even some micro-signal sensors only have the deviation of uV ranks.Therefore it is difficult to find directly suitable base
Quasi- source, to a reference source carries out partial pressure to realize typically all by precision resistance.The resistance of high precision（Such as a ten thousandth with
On）Be it is costly, it is tens to hundreds of yuan, all more expensive several times than CPU and most of IC chip, or even tens times.Its
Two, by changing the resistance of adjustable resistance or digital regulation resistance, so as to change partial pressure value thereon, finally realize zero deviation
The adjustment of voltage.And the precision of adjustable resistance and digital regulation resistance is general all very low, about 5 percent, it is centesimal all very
Difficulty is seen.If with more traditional manual potentiometer, then precision is lower, because all it is mechanical potentiometer, and maximum
Defect is, it is necessary to opens casing and is manually adjusted in scene.If with more advanced digital regulation resistance, although can adjust online
It is whole, but tap finite, general 1000 taps are just good, therefore precision and resolution ratio are all very low, and can not continuously adjust.
The content of the invention
It is to solve deficiency at three below existing zeroing circuit that the purpose of the present invention is
1st, the zero point adjustment of precision can not be realized, especially the circuit of one thousandth above precision, this is existing zeroing circuit
Essential defect.Its range of application will not typically exceed centesimal precision, in the circuit application of 5 percent or so precision
It is most extensive.
2nd, adjustment or on-line tuning can not be carried out, and adjustment is discontinuous, inconvenient.
3rd, a bit, corresponding cost is just higher by much precision improvement.And also likely lose more than gain.And a kind of company is provided
Continue the adjustable high-accuracy zeroing circuit of intelligence.
1st, be to solve technical problem proposed by the invention, the technical scheme for using for：A kind of whole intelligence of continuously adjustabe
Zeroing circuit, described circuit includes analog signal sensors, input resistance network and amplifying circuit of analog signal；Described mould
Intend signal transducer to be connected with input resistance network；Described input resistance network is connected with amplifying circuit of analog signal；It is described
Input resistance network be connected to the ground；The reference voltage end of the input resistance network is connected with amplifying circuit.
Further, the equipment that described amplifying circuit is connected located at the high-accuracy zeroing circuit of intelligence whole with continuously adjustabe
In CPU.
Beneficial effect using above-mentioned technical proposal is：It is of the invention compared with existing zeroing circuit, topmost or energy
Enough realize traditional circuit high-accuracy zeroing too far behind to catch up：
1st, the present invention can realize high-accuracy zero point adjustment.Due to eliminating potentiometer, or this non-essence of digital regulation resistance
Close element, and instead precision and the high integrated chip DAC of resolution ratio, thus precision up to a ten thousandth more than, even more
It is high by reachable 100,000/several.In other words, the precision of zeroing circuit is substantially dependent on the resolution ratio and precision of DAC.
2nd, because zeroing core of the invention controls DAC to realize by CPU, therefore it is truly realized the intelligence of zeroing
Change, online instantaneity and continuity.Zero point is as needed, adjustable at any time.
3rd, because the CPU of most of embedded systems carries 12 or 16 DAC functions, as long as precision meets the requirements,
When the DAC of plug-in higher precision is not needed, almost without any extra zeroing circuit device, thus cost significantly reduces.
Hardware circuit also becomes simpler and reliable.
Brief description of the drawings
Fig. 1 is heretofore described circuit diagram one；
Fig. 2 is heretofore described circuit diagram two.
Specific embodiment
Present disclosure is further described below in conjunction with accompanying drawing and currently preferred specific embodiment.Lifted
Example is served only for the explanation present invention, is not intended to limit the scope of the present invention.
2nd, as shown in Fig. 1 to Fig. 2, a kind of whole intelligent zeroing circuit of continuously adjustabe described in this programme is described
Circuit includes analog signal sensors, input resistance network and amplifying circuit of analog signal；Described analog signal sensors with
Input resistance network is connected；Described input resistance network is connected with amplifying circuit of analog signal；Described input resistance network
It is connected to the ground；The reference voltage end of the input resistance network is connected with amplifying circuit.Reference voltage described in this programme
Also can be in the equipment CPU being connected located at the high-accuracy zeroing circuit of intelligence whole with continuously adjustabe.
During specific implementation, because the DAC module that the CPU of equipment is carried is different, if DAC module output end band in itself
There is output to buffer, then reference voltage circuit is directly arranged in CPU module, then DAC module output end can be directly connected to
Input resistance network-side.If without band Buffer output in the DAC module carried in the CPU module of equipment, reference voltage electricity
Road is amplifying circuit.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all principle of the invention it
Interior, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (2)
1. the whole intelligent zeroing circuit of a kind of continuously adjustabe, it is characterised in that：Described circuit includes analog signal sensors, defeated
Enter resistor network and amplifying circuit of analog signal；Described analog signal sensors are connected with input resistance network；Described is defeated
Enter resistor network to be connected with amplifying circuit of analog signal；Described input resistance network is connected to the ground；The input resistance network
Reference voltage end be connected with amplifying circuit.
2. it is characterized in that：The high-accuracy zeroing circuit of the whole intelligence of continuously adjustabe according to claim 1, its feature exists
In：Described amplifying circuit is in the equipment CPU that the intelligence high-accuracy zeroing circuit whole with continuously adjustabe is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221868.8A CN106873473A (en) | 2017-04-06 | 2017-04-06 | A kind of whole intelligent zeroing circuit of continuously adjustabe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221868.8A CN106873473A (en) | 2017-04-06 | 2017-04-06 | A kind of whole intelligent zeroing circuit of continuously adjustabe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106873473A true CN106873473A (en) | 2017-06-20 |
Family
ID=59160041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710221868.8A Pending CN106873473A (en) | 2017-04-06 | 2017-04-06 | A kind of whole intelligent zeroing circuit of continuously adjustabe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106873473A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111522050A (en) * | 2020-04-14 | 2020-08-11 | 中国人民解放军军事科学院军事医学研究院 | Analog detection device for alpha surface pollution detection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197556A (en) * | 1996-07-09 | 1998-10-28 | 昆腾公司 | Pulser-width-modulated digital-to-analog converter with high gain and low gain modes |
| CN201688868U (en) * | 2009-08-07 | 2010-12-29 | 天津市亿环自动化仪表技术有限公司 | Vortex flowmeter with touch-to-zero circuit |
| CN102288215A (en) * | 2011-07-27 | 2011-12-21 | 上海耀华称重系统有限公司 | High-precision strain sensor simulator |
| CN202150837U (en) * | 2011-07-25 | 2012-02-22 | 杭州亿恒科技有限公司 | High-performance digitized gain fine adjustment circuit |
| CN203287022U (en) * | 2013-06-24 | 2013-11-13 | 北京物资学院 | Strain sensor simulator |
-
2017
- 2017-04-06 CN CN201710221868.8A patent/CN106873473A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197556A (en) * | 1996-07-09 | 1998-10-28 | 昆腾公司 | Pulser-width-modulated digital-to-analog converter with high gain and low gain modes |
| CN201688868U (en) * | 2009-08-07 | 2010-12-29 | 天津市亿环自动化仪表技术有限公司 | Vortex flowmeter with touch-to-zero circuit |
| CN202150837U (en) * | 2011-07-25 | 2012-02-22 | 杭州亿恒科技有限公司 | High-performance digitized gain fine adjustment circuit |
| CN102288215A (en) * | 2011-07-27 | 2011-12-21 | 上海耀华称重系统有限公司 | High-precision strain sensor simulator |
| CN203287022U (en) * | 2013-06-24 | 2013-11-13 | 北京物资学院 | Strain sensor simulator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111522050A (en) * | 2020-04-14 | 2020-08-11 | 中国人民解放军军事科学院军事医学研究院 | Analog detection device for alpha surface pollution detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Souri et al. | 12.7 A 0.85 V 600nW all-CMOS temperature sensor with an inaccuracy of±0.4° C (3σ) from− 40 to 125° C | |
| CN201774453U (en) | Power supply voltage detection circuit of switching power supply | |
| CN108768380B (en) | Conditioning circuit of sensor | |
| US9250642B2 (en) | Constant current generating circuit using on-chip calibrated resistor and related method thereof | |
| CN104423406B (en) | There is the transmitter of voltage driver and current driver | |
| CN104156025B (en) | A kind of high-order temperature compensated reference source | |
| CN108692823A (en) | A kind of PT100 temperature transmitter devices based on embedded technology | |
| CN106873473A (en) | A kind of whole intelligent zeroing circuit of continuously adjustabe | |
| CN107066024A (en) | A kind of low power consumption high-precision non-bandgap reference voltage source | |
| CN105183061A (en) | Voltage buffer circuit | |
| CN105989935B (en) | Electrical resistor | |
| CN105259969B (en) | Band-gap reference circuit with small temperature coefficient | |
| CN101145761A (en) | Power amplifier temperature compensation device and method | |
| CN105453435A (en) | Integrated circuit chip and impedance calibration method thereof | |
| JP4267664B2 (en) | Reference current source circuit and infrared signal processing circuit | |
| CN110061711B (en) | Signal amplifying circuit and electronic device | |
| CN100533954C (en) | Float restraint amplification circuit in sensor network | |
| CN106768516B (en) | Special integrated circuit for high-temperature pressure sensor | |
| TWI378248B (en) | Transmitting circuit, transmitter, receiver and testing device | |
| WO2005031970A3 (en) | Method, device and system for output impedance calibration that invariably maximizes hybrid performance | |
| CN108287261A (en) | Intelligent electric meter | |
| CN105865659B (en) | A kind of Controllable Active resistance | |
| CN105021347B (en) | A kind of sensitivity adjustment circuit and sensitivity correction method of bridge pressure sensor | |
| CN111490784B (en) | Analog-to-digital converter and analog-to-digital conversion method | |
| CN109992898B (en) | Logarithmic current divider circuit with temperature compensation function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |