CN104568205A - Temperature sensor compensation circuit for water treatment - Google Patents
Temperature sensor compensation circuit for water treatment Download PDFInfo
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- CN104568205A CN104568205A CN201310483322.1A CN201310483322A CN104568205A CN 104568205 A CN104568205 A CN 104568205A CN 201310483322 A CN201310483322 A CN 201310483322A CN 104568205 A CN104568205 A CN 104568205A
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- resistance
- potentiometer
- mistor
- operational amplifier
- integrated operational
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Abstract
The invention discloses a temperature sensor compensation circuit for water treatment. The compensation circuit comprises first to eighth resistors, first to third potentiometers, a thermistor, an integrated operational amplifier, a first capacitor, a second capacitor as well as first to fourth magnetic resistors, wherein a voltage input end of a power supply is connected with a first end of the first resistor, a positive power supply end of the integrated operational amplifier, a first end of the second potentiometer, a first end of the first magnetic resistor and a first end of the third magnetic resistor respectively. The temperature sensor compensation circuit for water treatment can be applied to positive temperature drift and negative temperature drift compensation of all devices in a temperature sensor circuit, can also average temperature drifts of all devices in a sensor and can reasonably adjust the temperature drifts, so that the temperature sensor circuit can work normally and stably.
Description
Technical field
The present invention relates to a kind of compensating circuit, particularly relate to a kind of temperature sensor compensating circuit for water treatment.
Background technology
Water treatment refers to carries out purified treatment by a series of water treatment facilities by contaminated industrial waste water or river, to reach the water quality standard of national regulation.All be provided with temperature sensor in water treatment facilities, be used for detecting the temperature of processed water.All integrated operational amplifier is contained in temperature sensor circuit, the device such as triode and resistance, but the change of temperature can have an impact to above-mentioned device, make them occur small and change slowly, this change can be amplified step by step by circuit below, finally produces larger drift at output terminal, shifted signal and useful signal cannot be differentiated, shifted signal will be caused time serious to flood useful signal, circuit cannot normally be worked, and at this moment just need temperature sensor compensating circuit to regulate.Conventional temperature sensor compensating circuit complex structure, cannot average drift signal, also reasonably cannot regulate it.
Summary of the invention
Object of the present invention is just to provide a kind of temperature sensor compensating circuit for water treatment to solve the problem.
In order to achieve the above object, present invention employs following technical scheme:
A kind of temperature sensor compensating circuit for water treatment, comprise the first resistance to the 8th resistance, first potentiometer is to the 3rd potentiometer, thermistor, integrated operational amplifier, first electric capacity, second electric capacity and the first mistor are to the 4th mistor, the voltage input end of power supply respectively with the first end of described first resistance, the cathode power supply end of described integrated operational amplifier, the first end of described second potentiometer, the first end of described first mistor is connected with the first end of described 3rd mistor, second end of described first resistance respectively with the first end of described first potentiometer, the sliding end of described first potentiometer, the first end of described thermistor is connected with the first end of described 3rd resistance, second end of described 3rd resistance respectively with the negative electricity source of described integrated operational amplifier, the first end of described 3rd potentiometer, the sliding end of described 3rd potentiometer, the first end of described first electric capacity, the first end of described second electric capacity, the first end of described 4th mistor is connected rear ground connection with the first end of described second mistor, the output terminal of described integrated operational amplifier is connected with the second end of described thermistor and the first end of described second resistance respectively, second end of described second resistance is connected with voltage signal output end, the inverting input of described integrated operational amplifier respectively with the first end of described 5th resistance, the first end of described 4th resistance is connected with the second end of described first potentiometer, second end of described 4th resistance respectively with the second end of described second potentiometer, the sliding end of described second potentiometer is connected with the second end of described 3rd potentiometer, second end of described 5th resistance is connected with the first end of described 7th resistance and the second end of described first electric capacity respectively, second end of described 7th resistance is connected with the second end of described first mistor and the second end of described second mistor respectively, the in-phase input end of described integrated operational amplifier is connected with the first end of described 6th resistance, second end of described 6th resistance is connected with the first end of described 8th resistance and the second end of described second electric capacity respectively, second end of described 8th resistance is connected with the second end of described 3rd mistor and the second end of described 4th mistor respectively.
Beneficial effect of the present invention is:
The present invention is a kind of temperature sensor compensating circuit for water treatment, this compensating circuit can be used for positive temperature drift and the negative temperature drift compensation of each device in temperature sensor circuit, can also the temperature drift of each device in average sensor, and reasonably can regulate it, make the work of temperature sensor circuit energy normal table.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of temperature sensor compensating circuit for water treatment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of temperature sensor compensating circuit for water treatment of the present invention, comprise the first resistance R1 to the 8th resistance R8, first potentiometer RP1 is to the 3rd potentiometer RP3, thermistor RT, integrated operational amplifier IC, first electric capacity C1, second electric capacity C2 and the first mistor RB1 is to the 4th mistor RB4, the voltage input end of power supply respectively with the first end of the first resistance R1, the cathode power supply end of integrated operational amplifier IC, the first end of the second potentiometer RP2, the first end of the first mistor RB1 is connected with the first end of the 3rd mistor RB3, second end of the first resistance R1 respectively with the first end of the first potentiometer RP1, the sliding end of the first potentiometer RP1, the first end of thermistor RT is connected with the first end of the 3rd resistance R3, second end of the 3rd resistance R3 respectively with the negative electricity source of integrated operational amplifier IC, the first end of the 3rd potentiometer RP3, the sliding end of the 3rd potentiometer RP3, the first end of the first electric capacity C1, the first end of the second electric capacity C2, the first end of the 4th mistor RB4 is connected rear ground connection with the first end of the second mistor RB2, the output terminal of integrated operational amplifier IC is connected with second end of thermistor RT and the first end of the second resistance R2 respectively, second end of the second resistance R2 is connected with voltage signal output end, the inverting input of integrated operational amplifier IC respectively with the first end of the 5th resistance R5, the first end of the 4th resistance R4 is connected with second end of the first potentiometer RP1, second end of the 4th resistance R4 respectively with second end of the second potentiometer RP2, the sliding end of the second potentiometer RP2 is connected with second end of the 3rd potentiometer RP3, second end of the 5th resistance R5 is connected with the first end of the 7th resistance R7 and second end of the first electric capacity C1 respectively, second end of the 7th resistance R7 is connected with second end of the first mistor RB1 and second end of the second mistor RB2 respectively, the in-phase input end of integrated operational amplifier IC is connected with the first end of the 6th resistance R6, second end of the 6th resistance R6 is connected with the first end of the 8th resistance R8 and second end of the second electric capacity C2 respectively, second end of the 8th resistance R8 is connected with second end of the 3rd mistor RB3 and second end of the 4th mistor RB4 respectively.
Principle of work of the present invention is as follows:
Integrated operational amplifier IC can average drift signal, and the second potentiometer RP2 and the 3rd potentiometer RP3 carries out misregistration signal adjustment.
Claims (1)
1. the temperature sensor compensating circuit for water treatment, it is characterized in that: comprise the first resistance to the 8th resistance, first potentiometer is to the 3rd potentiometer, thermistor, integrated operational amplifier, first electric capacity, second electric capacity and the first mistor are to the 4th mistor, the voltage input end of power supply respectively with the first end of described first resistance, the cathode power supply end of described integrated operational amplifier, the first end of described second potentiometer, the first end of described first mistor is connected with the first end of described 3rd mistor, second end of described first resistance respectively with the first end of described first potentiometer, the sliding end of described first potentiometer, the first end of described thermistor is connected with the first end of described 3rd resistance, second end of described 3rd resistance respectively with the negative electricity source of described integrated operational amplifier, the first end of described 3rd potentiometer, the sliding end of described 3rd potentiometer, the first end of described first electric capacity, the first end of described second electric capacity, the first end of described 4th mistor is connected rear ground connection with the first end of described second mistor, the output terminal of described integrated operational amplifier is connected with the second end of described thermistor and the first end of described second resistance respectively, second end of described second resistance is connected with voltage signal output end, the inverting input of described integrated operational amplifier respectively with the first end of described 5th resistance, the first end of described 4th resistance is connected with the second end of described first potentiometer, second end of described 4th resistance respectively with the second end of described second potentiometer, the sliding end of described second potentiometer is connected with the second end of described 3rd potentiometer, second end of described 5th resistance is connected with the first end of described 7th resistance and the second end of described first electric capacity respectively, second end of described 7th resistance is connected with the second end of described first mistor and the second end of described second mistor respectively, the in-phase input end of described integrated operational amplifier is connected with the first end of described 6th resistance, second end of described 6th resistance is connected with the first end of described 8th resistance and the second end of described second electric capacity respectively, second end of described 8th resistance is connected with the second end of described 3rd mistor and the second end of described 4th mistor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310483322.1A CN104568205A (en) | 2013-10-16 | 2013-10-16 | Temperature sensor compensation circuit for water treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310483322.1A CN104568205A (en) | 2013-10-16 | 2013-10-16 | Temperature sensor compensation circuit for water treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104568205A true CN104568205A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310483322.1A Pending CN104568205A (en) | 2013-10-16 | 2013-10-16 | Temperature sensor compensation circuit for water treatment |
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| CN (1) | CN104568205A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466460A (en) * | 2015-12-18 | 2016-04-06 | 深圳市贝沃德克生物技术研究院有限公司 | Circuit temperature drift compensation system and method of biosensor |
-
2013
- 2013-10-16 CN CN201310483322.1A patent/CN104568205A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466460A (en) * | 2015-12-18 | 2016-04-06 | 深圳市贝沃德克生物技术研究院有限公司 | Circuit temperature drift compensation system and method of biosensor |
| WO2017101549A1 (en) * | 2015-12-18 | 2017-06-22 | 深圳市贝沃德克生物技术研究院有限公司 | Biosensor circuit temperature drift compensation system and method |
| CN105466460B (en) * | 2015-12-18 | 2019-08-30 | 深圳市贝沃德克生物技术研究院有限公司 | The circuit temperature drift compensating system and method for biosensor |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
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| WD01 | Invention patent application deemed withdrawn after publication |