CN107272810A - A kind of reference voltage source temperature drift compensation conditioned circuit - Google Patents
A kind of reference voltage source temperature drift compensation conditioned circuit Download PDFInfo
- Publication number
- CN107272810A CN107272810A CN201710642422.2A CN201710642422A CN107272810A CN 107272810 A CN107272810 A CN 107272810A CN 201710642422 A CN201710642422 A CN 201710642422A CN 107272810 A CN107272810 A CN 107272810A
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- Prior art keywords
- circuit
- temperature drift
- reference voltage
- drift compensation
- voltage source
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
- G05F1/567—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for temperature compensation
Abstract
The invention discloses a kind of reference voltage source temperature drift compensation conditioned circuit, including：Mu balanced circuit, including the diode for temperature drift compensation；Bleeder circuit, partial pressure is carried out to the output voltage of mu balanced circuit；Amplifying circuit, scales partial pressure and the output of bleeder circuit；Reference circuit, the output of amplifying circuit is superimposed upon on reference itself and exported.Temperature drift value of this programme by adjusting reference voltage is compensated come the temperature drift of compensation system using circuit to temperature, and its response time is fast, and does not need temperature sensor, and circuit is simple.
Description
Technical field
The present invention relates to temperature drift compensation field, and in particular to a kind of reference voltage source temperature drift compensation conditioned circuit.
Background technology
Reference voltage source is the important component of analog circuit and digital circuit.There is provided stabilization in analog circuit
Reference voltage, it is ensured that photoelectric isolating device that positive negative signal passes through positive direction etc., avoids low side blind area.In digital circuit
In, it is that AD and DA provide reference voltage.
Existing technology, software compensation is typically used for the temperature drift compensation of system or device.Software compensation needs
System or dress center temperature sensor, and measurement temperature is fed back to after system, and system is carried out according to the penalty coefficient of corresponding temperature
Compensation.Compensation way is complex, and the response time is slow.
The content of the invention
In order to solve the above-mentioned technical problem the present invention provides a kind of reference voltage source temperature drift compensation conditioned circuit.
The present invention is achieved through the following technical solutions：
A kind of reference voltage source temperature drift compensation conditioned circuit, including：
Mu balanced circuit, including the diode for temperature drift compensation；
Bleeder circuit, partial pressure is carried out to the output voltage of mu balanced circuit；
Amplifying circuit, scales partial pressure and the output of bleeder circuit；
Reference circuit, the output of amplifying circuit is superimposed upon on reference itself and exported.
The diode of this programme mu balanced circuit is as temperature drift compensation device, by being superimposed upon benchmark after a certain proportion of scaling
On, by adjusting the temperature drift value of reference voltage come the temperature drift of compensation system.Temperature is compensated using circuit, its response time
It hurry up, and do not need temperature sensor, circuit is simple.
Preferably, the mu balanced circuit also includes the first resistor for being connected to the first power supply and diode anode, it is described
The minus earth of diode, the bleeder circuit includes second resistance, the 3rd electricity for being connected in parallel on diode two ends and being serially connected
Resistance.
Preferably, the amplifying circuit is negative feedback amplifier circuit.
Further, the amplifying circuit includes operational amplifier, and the in-phase input end of the operational amplifier is connected to
In the partial pressure output end of bleeder circuit, the output end of the operational amplifier is connected by the 7th resistance with inverting input.
Preferably, the amplifying circuit is positive feedback amplifying circuit.
Further, the amplifying circuit includes operational amplifier, and the inverting input of the operational amplifier passes through the
Five resistance are connected with the partial pressure output end of bleeder circuit and in-phase input end is connected on power supply, the output of the operational amplifier
End is connected by the 7th resistance with inverting input.
Preferably, the reference circuit includes controllable silicon, the anode of the controllable silicon is connected to the output of amplifying circuit
On end, and negative electrode is connected with second source.
Further, the negative electrode of the controllable silicon is connected with filter capacitor.
Further, it is connected with output filter capacitor on the controllable end of the controllable silicon.
The present invention compared with prior art, has the following advantages and advantages：
1st, temperature drift value of the present invention by adjusting reference voltage is mended come the temperature drift of compensation system using circuit to temperature
Repay, its response time is fast, and does not need temperature sensor, and circuit is simple.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is circuit theory diagrams when amplifying circuit of the invention is negative-feedback.
Fig. 2 is circuit theory diagrams when amplifying circuit of the invention is positive feedback.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does not make
For limitation of the invention.
Embodiment 1
A kind of reference voltage source temperature drift compensation conditioned circuit as shown in Figure 1, including：
Mu balanced circuit, including the diode for temperature drift compensation；
Bleeder circuit, partial pressure is carried out to the output voltage of mu balanced circuit；
Amplifying circuit, scales partial pressure and the output of bleeder circuit；
Reference circuit, the output of amplifying circuit is superimposed upon on reference itself and exported.
Embodiment 2
Based on the principle of embodiment 1, this programme discloses the circuit structure that an amplifying circuit is negative feedback amplifier circuit.As schemed
Shown in 1, mu balanced circuit includes the first resistor R1 and diode being in series, and first resistor R1 can use 6K8 resistance and its non-public affairs
End is connected on the first power supply+12 altogether, and diode D1 not common end is minus earth, and diode uses 1N4148, and it is to open
The silicone tube of pass type, its major function is one-way conduction function, has DC0.65V or so pressure drop while one-way conduction,
Diode 1N4148 is raised with temperature, and linear decline is presented in forward conduction voltage drop, it follows that its temperature drift is floated for subzero temperature
Drift, and be approximately straight line, it can be used to do temperature-compensating.Selection of datum voltage-type benchmark, temperature drift, can in 10ppm/ DEG C
As preferable a reference source.Bleeder circuit is in parallel on the diode, including second resistance R2, the 3rd resistor R3 being serially connected, the
Two resistance R2,3rd resistor R3 common port are used as partial pressure output end.Amplifying circuit includes operational amplifier, operational amplifier
In-phase input end is connected in the partial pressure output end of bleeder circuit, operational amplifier U1 output end by the 7th resistance R7 with it is anti-
Phase input is connected.Reference circuit uses controllable silicon N1, and the anode of controllable silicon is connected in operational amplifier U1 output end, and
Negative electrode is connected with second source+5.Filter capacitor, i.e., electric capacity C1, the electric capacity C2 of homogeneous end ground connection are connected in the negative electrode of controllable silicon；
Output filter capacitor C3 is connected on the controllable end of controllable silicon.
On the basis of foregoing circuit structure, amplifying circuit can also use positive feedback amplifying circuit.As shown in Fig. 2 voltage stabilizing
Circuit, bleeder circuit, reference circuit can use foregoing circuit structure, include computing from amplifying circuit unlike foregoing circuit
Amplifier U1, operational amplifier U1 inverting input are connected and same by the 5th resistance R5 with the partial pressure output end of bleeder circuit
Phase input is connected on power supply, and the output end of the operational amplifier is connected by the 7th resistance R7 with inverting input.
In foregoing circuit, according to the circuit structure of amplifying circuit, it can respectively constitute negative temperature drift compensation and positive temperature drift compensation.
Controllable silicon N1 is a reference source, and the temperature drift of itself is very small, and it is 0 that can be approximately considered temperature drift.Inside real system, temperature drift may be needed
It is certain value, the temperature drift of ability compensation system to want benchmark temperature drift.Therefore the main function of this circuit is exactly by adjusting benchmark
The temperature drift value of voltage carrys out the temperature drift of compensation system.Because diode D1 temperature drift curve approximation straight line, the area of temperature drift distribution
Between between -2550ppm/ DEG C~-2800ppm/ DEG C, D1 pressure drop is generally 0.65V, takes -2675ppm/ DEG C of median.As schemed
Shown in 2, the voltage of benchmark is 2.5V, and temperature drift is 0.
The temperature drift of whole circuit just become in order to：
By R3=68K, R2=2K, substitute into above-mentioned formula and calculated, the temperature drift value for obtaining whole reference circuit is
20ppm/℃.By the ratio for adjusting R3 and R2, it is possible to the temperature drift value being fixed.Pass through the circuit structure of amplifying circuit
Set, positive temperature drift value and negative temperature drift value can be obtained.Compensated in the present embodiment by adjusting the temperature drift value of reference voltage
The temperature drift of system, is compensated using circuit to temperature, and its response time is fast, and does not need temperature sensor, and circuit is simple.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (9)
1. a kind of reference voltage source temperature drift compensation conditioned circuit, it is characterised in that including：
Mu balanced circuit, including the diode for temperature drift compensation；
Bleeder circuit, partial pressure is carried out to the output voltage of mu balanced circuit；
Amplifying circuit, scales partial pressure and the output of bleeder circuit；
Reference circuit, the output of amplifying circuit is superimposed upon on reference itself and exported.
2. a kind of reference voltage source temperature drift compensation conditioned circuit according to claim 1, it is characterised in that the voltage stabilizing electricity
Road also includes the first resistor for being connected to the first power supply and diode anode, the minus earth of the diode, the partial pressure electricity
Road includes second resistance, the 3rd resistor for being connected in parallel on diode two ends and being serially connected.
3. a kind of reference voltage source temperature drift compensation conditioned circuit according to claim 1, it is characterised in that the amplification electricity
Road is negative feedback amplifier circuit.
4. a kind of reference voltage source temperature drift compensation conditioned circuit according to claim 3, it is characterised in that the amplification electricity
Road includes operational amplifier, and the in-phase input end of the operational amplifier is connected in the partial pressure output end of bleeder circuit, described
The output end of operational amplifier is connected by the 7th resistance with inverting input.
5. a kind of reference voltage source temperature drift compensation conditioned circuit according to claim 1, it is characterised in that the amplification electricity
Road is positive feedback amplifying circuit.
6. a kind of reference voltage source temperature drift compensation conditioned circuit according to claim 5, it is characterised in that the amplification electricity
Road includes operational amplifier, the partial pressure output end that the inverting input of the operational amplifier passes through the 5th resistance and bleeder circuit
It is connected and in-phase input end is connected on power supply, the output end of the operational amplifier passes through the 7th resistance and inverting input phase
Even.
7. a kind of reference voltage source temperature drift compensation conditioned circuit according to claim 1, it is characterised in that the benchmark electricity
Road includes controllable silicon, and the anode of the controllable silicon is connected in the output end of amplifying circuit, and negative electrode is connected with second source.
8. a kind of reference voltage source temperature drift compensation conditioned circuit according to claim 7, it is characterised in that the controllable silicon
Negative electrode be connected with filter capacitor.
9. a kind of reference voltage source temperature drift compensation conditioned circuit according to claim 7, it is characterised in that the controllable silicon
Controllable end on be connected with output filter capacitor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642422.2A CN107272810B (en) | 2017-07-31 | 2017-07-31 | A kind of reference voltage source temperature drift compensation conditioned circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642422.2A CN107272810B (en) | 2017-07-31 | 2017-07-31 | A kind of reference voltage source temperature drift compensation conditioned circuit |
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| CN107272810A true CN107272810A (en) | 2017-10-20 |
| CN107272810B CN107272810B (en) | 2019-03-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111250174A (en) * | 2020-03-18 | 2020-06-09 | 江苏建筑职业技术学院 | High-precision temperature control catalyst preparation system |
| CN116780725A (en) * | 2023-08-21 | 2023-09-19 | 强钧能源技术(深圳)有限公司 | Operation control method for energy storage power supply |
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| CN102339083A (en) * | 2011-07-08 | 2012-02-01 | 北京物资学院 | Voltage-adjustable direct current voltage stabilizing power supply |
| CN102883499A (en) * | 2011-08-02 | 2013-01-16 | 深圳桑达国际电子器件有限公司 | LED (light-emitting diode) silicon-controlled power supply and constant current control circuit |
| CN103092245A (en) * | 2013-01-09 | 2013-05-08 | 卓捷创芯科技（深圳）有限公司 | Ultra-low-power-consumption low dropout stabilized voltage supply circuit and radio frequency identification (RFID) tags |
| US20150205313A1 (en) * | 2014-01-17 | 2015-07-23 | Seiko Instrument Inc. | Voltage regulator and semiconductor device |
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2017
- 2017-07-31 CN CN201710642422.2A patent/CN107272810B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339083A (en) * | 2011-07-08 | 2012-02-01 | 北京物资学院 | Voltage-adjustable direct current voltage stabilizing power supply |
| CN102883499A (en) * | 2011-08-02 | 2013-01-16 | 深圳桑达国际电子器件有限公司 | LED (light-emitting diode) silicon-controlled power supply and constant current control circuit |
| CN103092245A (en) * | 2013-01-09 | 2013-05-08 | 卓捷创芯科技（深圳）有限公司 | Ultra-low-power-consumption low dropout stabilized voltage supply circuit and radio frequency identification (RFID) tags |
| US20150205313A1 (en) * | 2014-01-17 | 2015-07-23 | Seiko Instrument Inc. | Voltage regulator and semiconductor device |
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| 廖文杰: "一种交直流信号低温漂检测技术设计与实现", 《自动化与仪器仪表》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111250174A (en) * | 2020-03-18 | 2020-06-09 | 江苏建筑职业技术学院 | High-precision temperature control catalyst preparation system |
| CN116780725A (en) * | 2023-08-21 | 2023-09-19 | 强钧能源技术(深圳)有限公司 | Operation control method for energy storage power supply |
| CN116780725B (en) * | 2023-08-21 | 2023-12-05 | 强钧能源技术(深圳)有限公司 | Operation control method for energy storage power supply |
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| CN107272810B (en) | 2019-03-19 |
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