CN107192471B - It is a kind of for the New temperature compensation circuit of pneumatic sensor and compensation method - Google Patents
It is a kind of for the New temperature compensation circuit of pneumatic sensor and compensation method Download PDFInfo
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- CN107192471B CN107192471B CN201710238084.6A CN201710238084A CN107192471B CN 107192471 B CN107192471 B CN 107192471B CN 201710238084 A CN201710238084 A CN 201710238084A CN 107192471 B CN107192471 B CN 107192471B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 29
- 239000003381 stabilizer Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 208000021760 high fever Diseases 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- 238000004659 sterilization and disinfection Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
- G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
- G01K7/25—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit for modifying the output characteristic, e.g. linearising
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Abstract
The present invention provides a kind of New temperature compensation circuits for pneumatic sensor.The New temperature compensation circuit for pneumatic sensor include single-chip microcontroller and respectively with the high-temperature region pressure divider circuit of the monolithic mechatronics, room temperature area pressure divider circuit, low-temperature space pressure divider circuit, environment temperature measure loop and wind speed measurement circuit.The present invention also provides a kind of compensation methodes using the New temperature compensation circuit for pneumatic sensor.Beneficial effects of the present invention: the wide scope temperature-compensating that the New temperature compensation method for pneumatic sensor not only solves traditional Sensor Temperature Compensation mode is insufficient, also solves the deficiency of the at high cost and poor reliability using scm software compensation.
Description
Technical field
The invention belongs to technique for temperature compensation fields, compensate more particularly to a kind of New temperature for pneumatic sensor
Circuit and compensation method.
Background technique
Pneumatic sensor on the market, is mainly used for the devices such as air purifier, central air-conditioning, electric motor starting.It is pneumatic
The working principle of sensor is using PTC as inductive head, and when it reaches Curie-point temperature, sensor is in equilibrium state,
Once blowing air over the surface PTC, then PTC temperature declines, and resistance value can reduce, is compared by bleeder circuit with normal voltage
Afterwards, sensor issues control signal, carries out transistor, relay or the on-off control of other power devices.
Under normal circumstances, the resistance (NTC) of a negative temperature coefficient can be designed on pneumatic sensor, be used for positive temperature system
The temperature-compensating of number PTC.Since the temperature curve of two temperature and resistances is inconsistent, in the compensation effect gap of different temperature spots
It is bigger.Due to using the product of object may be mounted in outdoor, the product of outdoor installation be substantially affected by environment, thus not
Same region uses, and the temperature characterisitic of product just needs to be modified, and is especially for use in the severe state of some environment temperatures
Under, such as the southern high fever area in northeast, the extremely cold environment of northwest and Southeast Asia, it is necessary to it is carried out for the use environment of sensor
The amendment of temperature-compensating, and since the client of pneumatic sensor is the manufacturers such as air-conditioning producer and clarifier producer, their visitor
Family may sell to different zones by the sale of agency, thus, the actual use region of sensor can not define, only
It can be solved final in use, finding the problem again, to client and supply commercial city cause trouble.
Summary of the invention
It is an object of the invention in view of the drawbacks of the prior art, provide one kind to can satisfy the temperature benefit under different occasions
Repay the New temperature compensation electricity for pneumatic sensor of requirement, the especially requirement under hot environment and low temperature environment
Road and compensation method.
Technical scheme is as follows: a kind of New temperature compensation circuit for pneumatic sensor include single-chip microcontroller,
And respectively with the high-temperature region pressure divider circuit of the monolithic mechatronics, room temperature area pressure divider circuit, low-temperature space pressure divider circuit, environment temperature
Spend measure loop and wind speed measurement circuit；The environment temperature measure loop detection ambient temperature information is simultaneously defeated to the single-chip microcontroller
Environment temperature voltage V0 out, and room temperature lower voltage limit V1 and room temperature upper voltage limit V2 is set in the single-chip microcontroller, as the V0
When no more than V1, the single-chip microcontroller selects the output voltage of the low-temperature space pressure divider circuit as the ginseng in the wind speed measurement circuit
Examine voltage；When the V0 is between V1 and V2, the single-chip microcontroller selects the output voltage of room temperature area pressure divider circuit to make
For the reference voltage in the wind speed measurement circuit；When the V0 is not less than V2, the single-chip microcontroller selects the high-temperature region partial pressure
Reference voltage of the output voltage in circuit as the wind speed measurement circuit.
Preferably, the high-temperature region pressure divider circuit includes the resistance R1 being connected in parallel and resistance R2, the resistance R1 and institute
State resistance R2 respectively with the monolithic mechatronics；Room temperature area pressure divider circuit includes the resistance R3 and resistance being connected in parallel
R4, the resistance R3 and the resistance R4 respectively with the monolithic mechatronics；The low-temperature space pressure divider circuit includes in parallel connects
The resistance R5 and resistance R6, the resistance R5 and the resistance R6 connect respectively with the monolithic mechatronics.
Preferably, the environment temperature measure loop includes the resistance R7 being connected in parallel and temperature sensor NTC, the electricity
Hinder the R7 and temperature sensor NTC respectively with the monolithic mechatronics；The wind speed measurement circuit includes being connected in parallel
Resistance R8 and air velocity transducer PTC, resistance R8 and the air velocity transducer PTC respectively with the monolithic mechatronics.
Preferably, further include power supply unit, the power supply unit respectively with the high-temperature region pressure divider circuit, the room temperature area
Pressure divider circuit, the low-temperature space pressure divider circuit, the environment temperature measure loop and wind speed measurement circuit electrical connection.
Preferably, the power supply unit includes the Industrial Frequency Transformer T1, low frequency rectifier bridge DB1 and voltage-stabiliser tube being sequentially connected electrically
U1, the voltage-stabiliser tube U1 are divided back with the high-temperature region pressure divider circuit, room temperature area pressure divider circuit, the low-temperature space respectively
Road, the environment temperature measure loop and wind speed measurement circuit electrical connection.
Preferably, further include the pilot lamp loop and relay circuit being connected in parallel, the pilot lamp loop and it is described after
Electrical circuit respectively with the monolithic mechatronics；The weak signal that the relay circuit is used to export the single-chip microcontroller converts
For high-power signal.
Preferably, the pilot lamp loop includes the resistance R9 and diode D1 being sequentially connected electrically with the single-chip microcontroller, institute
State diode D1 ground connection；The relay circuit includes the triode Q1 and relay being sequentially connected electrically with the single-chip microcontroller
The emitter of RELAY1, the base stage of the triode Q1 and the monolithic mechatronics, the triode Q1 is grounded, three pole
The collector of pipe Q1 is electrically connected with the relay RELAY1.
Preferably, the relay circuit further includes the diode D2 being arranged in parallel with the relay RELAY1, described
Diode D2 constitutes the aerial drainage diode of the relay RELAY1.
A kind of compensation side according to any New temperature compensation circuit for pneumatic sensor of preceding claim
Method includes the following steps: environment temperature measure loop detection ambient temperature information and to the single-chip microcontroller output environment temperature
Voltage V0 is spent, and sets room temperature lower voltage limit V1 and room temperature upper voltage limit V2 in the single-chip microcontroller, when the V0 is not more than V1
When, the single-chip microcontroller selects the output voltage of the low-temperature space pressure divider circuit as the reference voltage in the wind speed measurement circuit；
When the V0 is between V1 and V2, the single-chip microcontroller selects the output voltage of room temperature area pressure divider circuit as the wind
The reference voltage of fast measure loop；When the V0 is not less than V2, the single-chip microcontroller selects the defeated of the high-temperature region pressure divider circuit
Reference voltage of the voltage as the wind speed measurement circuit out.
Technical solution provided by the invention has the following beneficial effects:
1, environment temperature is divided into third gear for the New temperature compensation circuit of pneumatic sensor and compensation method, forms three
A humidity province solves the deviation of the temperature curve between negative temperature coefficient resister and positive temperature coefficient resistor, preferably carries out
Segmented temperature compensation；Using the voltage signal under the different temperatures of negative temperature coefficient in the loop, the signal is given to single-chip microcontroller
Judged, and then selects that any road reference comparison voltages used；Also the positive collected signal of temperature and resistance PTC is given to monolithic
Machine, and judgement is compared with reference comparison voltages, single-chip microcontroller issue control instruction, if control subsequent power device and after
Electric appliance etc. also solves benefit so that the wide scope temperature-compensating for not only solving traditional Sensor Temperature Compensation mode is insufficient
With the deficiency for the at high cost and poor reliability that scm software compensates；
2, described also to have calculating simple for the New temperature compensation circuit of pneumatic sensor and compensation method, to monolithic
Machine it is of less demanding, at low cost, calculation amount is few, high reliablity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the New temperature compensation circuit provided in an embodiment of the present invention for pneumatic sensor；
Fig. 2 is the structural frames for being applied to air purifier shown in Fig. 1 for the New temperature compensation circuit of pneumatic sensor
Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The description of specific distinct unless the context otherwise, the present invention in element and component, the shape that quantity both can be single
Formula exists, and form that can also be multiple exists, and the present invention is defined not to this.Although step in the present invention with label into
It has gone arrangement, but is not used to limit the precedence of step, unless expressly stated the order of step or holding for certain step
Based on row needs other steps, otherwise the relative rank of step is adjustable.It is appreciated that used herein
Term "and/or" one of is related to and covers associated listed item or one or more of any and all possible groups
It closes.
Referring to Fig. 1, the New temperature compensation circuit provided in an embodiment of the present invention for pneumatic sensor includes power supply
Unit 10, single-chip microcontroller 20 and the high-temperature region pressure divider circuit 30 being electrically connected respectively with the single-chip microcontroller 20, room temperature area pressure divider circuit
40, low-temperature space pressure divider circuit 50, environment temperature measure loop 60 and wind speed measurement circuit 70.
The power supply unit 10 includes Industrial Frequency Transformer T1, low frequency rectifier bridge DB1 and the voltage-stabiliser tube U1 being sequentially connected electrically, institute
State voltage-stabiliser tube U1 respectively with the high-temperature region pressure divider circuit 30, room temperature area pressure divider circuit 40, the low-temperature space pressure divider circuit
50, the environment temperature measure loop 60 and the wind speed measurement circuit 70 electrical connection.Wherein, the Industrial Frequency Transformer T1 is used for
220V voltage will be converted to low pressure, representative value 12V；The voltage-stabiliser tube U1 be used for by unstable DC voltage stability than
More stable voltage, such as representative value 12V.
It is also in parallel between the low frequency rectifier bridge DB1 and the voltage-stabiliser tube U1 to be equipped with filtering in the power supply unit 10
Capacitor C1 and C2, are respectively used to the filtering of high frequency ripple and low-frequency ripple；
Moreover, being gone back in the power supply unit 10 after the voltage-stabiliser tube U1 and being connected to capacitor C3, the capacitor C3 is big
Capacity causes the interference or damage of subsequent conditioning circuit for preventing voltage jump.
The high-temperature region pressure divider circuit 30, room temperature area pressure divider circuit 40, the low-temperature space pressure divider circuit 50 are used respectively
In carrying out voltage compensation in different temperatures interval range to the wind speed measurement circuit 70.That is, within the scope of different temperature,
The single-chip microcontroller 20 controls the wind speed measurement circuit 70 and the high-temperature region pressure divider circuit 30, the room temperature is selected to distinguish pressure respectively
Circuit 40 or the low-temperature space pressure divider circuit 50 are as the reference voltage.
Specifically, the high-temperature region pressure divider circuit 30 include the resistance R1 that is connected in parallel and resistance R2, the resistance R1 and
The resistance R2 is electrically connected with the single-chip microcontroller 20 respectively；
Room temperature area pressure divider circuit 40 includes the resistance R3 being connected in parallel and resistance R4, the resistance R3 and the resistance
R4 is electrically connected with the single-chip microcontroller 20 respectively；
The low-temperature space pressure divider circuit 50 includes the resistance R5 being connected in parallel and resistance R6, the resistance R5 and the resistance
R6 is electrically connected with the single-chip microcontroller 20 respectively.
The environment temperature measure loop 60 includes the resistance R7 and temperature sensor NTC, the resistance R7 being connected in parallel
It is electrically connected respectively with the single-chip microcontroller 20 with the temperature sensor NTC, and the temperature sensor NTC is negative temperature coefficient
Thermistor.
The wind speed measurement circuit 70 includes the resistance R8 and air velocity transducer PTC being connected in parallel, resistance R8 and the wind
Fast sensor PTC is electrically connected with the single-chip microcontroller 20 respectively, and the air velocity transducer PTC is the semi-conductor electricity of positive temperature coefficient
Resistance.
In the present embodiment, the high-temperature region pressure divider circuit 30, room temperature area pressure divider circuit 40, low-temperature space partial pressure
Two electricity components in circuit 50, the environment temperature measure loop 60 and the wind speed measurement circuit 70, one of electricity
It learns element to be electrically connected with the power supply unit 10, another ground connection.
Moreover, being also serially connected with microcontroller power supply M, the single-chip microcontroller between the power supply unit 10 and the single-chip microcontroller 20
Power supply M design for the low voltage power supply of the single-chip microcontroller 20, and output voltage is stable 3.7V.
In addition, if assuming that the environment temperature measure loop 60 detects ambient temperature information and defeated to the single-chip microcontroller 20
Environment temperature voltage V out0, and room temperature lower voltage limit V is set in the single-chip microcontroller 201With room temperature upper voltage limit V2,
As the V0No more than V1When, the single-chip microcontroller 20 select the output voltage of the low-temperature space pressure divider circuit 50 as
The reference voltage in the wind speed measurement circuit 70；
As the V0Between V1And V2Between when, the single-chip microcontroller 20 select room temperature area pressure divider circuit 40 output electricity
Press the reference voltage as the wind speed measurement circuit 70；
As the V0Not less than V2When, the single-chip microcontroller 20 select the output voltage of the high-temperature region pressure divider circuit 30 as
The reference voltage in the wind speed measurement circuit 70.
In addition, the New temperature compensation circuit for pneumatic sensor further includes the pilot lamp loop 80 being connected in parallel
With relay circuit 90, the pilot lamp loop 80 and the relay circuit 90 are electrically connected with the single-chip microcontroller 20 respectively.
Wherein, the pilot lamp loop 80 includes the resistance R9 and diode D1 being sequentially connected electrically with the single-chip microcontroller 20,
The diode D1 ground connection；
The relay circuit 90 is used to convert high-power signal for the weak signal that the single-chip microcontroller 20 exports, and described
Relay circuit 90 includes the triode Q1 being sequentially connected electrically with the single-chip microcontroller 20 and relay RELAY1, the triode Q1
Base stage be electrically connected with the single-chip microcontroller 20, the emitter of triode Q1 ground connection, the collector of the triode Q1 and institute
State relay RELAY1 electrical connection.
Moreover, the relay circuit 90 further includes the diode D2 being arranged in parallel with the relay RELAY1, it is described
Diode D2 constitutes the aerial drainage diode of the relay RELAY1.
It should be noted that can access high pressure after the relay RELAY1 of the relay circuit 90 generates load or suitable
For other loads of different occasions, which is not limited by the present invention.
For example, referring to Fig. 2, by taking the application of air purifier as an example, it is described for pneumatic in the air purifier
The New temperature compensation circuit of sensor generates the high pressure conditions of thousands of volts by the closure of the relay RELAY1 to use
Environment sterilization is carried out in generating ozone, then the state logic process in the New temperature compensation circuit for pneumatic sensor
It is as shown in the table:
Based on upper table, when environment temperature is in room temperature area (V1-V2), the single-chip microcontroller 20 selects room temperature area pressure divider circuit 40
For reference comparison voltages, when the air velocity transducer PTC has detected that wind passes through, the single-chip microcontroller 20 issues instruction, described
Triode Q1 conducting, the relay RELAY1 closure, drives loaded work piece below, for example generate high pressure；When the wind speed passes
When sensor PTC has not detected that wind passes through, the single-chip microcontroller 20 issues instruction, the triode Q1 cut-off, the relay
RELAY1 is disconnected, behind load and do not work.
Similarly, when environment temperature is in high-temperature region (>=V2) and low-temperature space (<V1), described in the single-chip microcontroller 20 selects respectively
High-temperature region pressure divider circuit 30 and the low-temperature space pressure divider circuit 50 are used as reference comparison voltages, other working methods and room temperature area phase
Together, this will not be repeated here.
In addition, it should be understood that the New temperature compensation circuit for pneumatic sensor can also carry out Communication Control
The extension of aspect, such as using MAX485 bus structures, communicated with host computer, convenient for the intelligent measurement and control of system.
A kind of includes according to Fig. 1 following step for the compensation method of the New temperature compensation circuit of pneumatic sensor
Rapid: the environment temperature measure loop detects ambient temperature information and to the single-chip microcontroller output environment temperature voltage V0, and
Room temperature lower voltage limit V is set in the single-chip microcontroller1With room temperature upper voltage limit V2,
As the V0No more than V1When, the single-chip microcontroller selects the output voltage of the low-temperature space pressure divider circuit as described in
The reference voltage in wind speed measurement circuit；
As the V0Between V1And V2Between when, the single-chip microcontroller selects the output voltage of room temperature area pressure divider circuit to make
For the reference voltage in the wind speed measurement circuit；
As the V0Not less than V2When, the single-chip microcontroller selects the output voltage of the high-temperature region pressure divider circuit as described in
The reference voltage in wind speed measurement circuit.
Compared to the prior art, technical solution provided by the invention has the following beneficial effects:
1, environment temperature is divided into third gear for the New temperature compensation circuit of pneumatic sensor and compensation method, forms three
A humidity province solves the deviation of the temperature curve between negative temperature coefficient resister and positive temperature coefficient resistor, preferably carries out
Segmented temperature compensation；Using the voltage signal under the different temperatures of negative temperature coefficient in the loop, the signal is given to single-chip microcontroller
Judged, and then selects that any road reference comparison voltages used；Also the positive collected signal of temperature and resistance PTC is given to monolithic
Machine, and judgement is compared with reference comparison voltages, single-chip microcontroller issue control instruction, if control subsequent power device and after
Electric appliance etc. also solves benefit so that the wide scope temperature-compensating for not only solving traditional Sensor Temperature Compensation mode is insufficient
With the deficiency for the at high cost and poor reliability that scm software compensates；
2, described also to have calculating simple for the New temperature compensation circuit of pneumatic sensor and compensation method, to monolithic
Machine it is of less demanding, at low cost, calculation amount is few, high reliablity.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of New temperature compensation circuit for pneumatic sensor, it is characterised in that: including single-chip microcontroller and respectively with it is described
The high-temperature region pressure divider circuits of monolithic mechatronics, room temperature area pressure divider circuit, low-temperature space pressure divider circuit, environment temperature measure loop and
Wind speed measurement circuit；
The environment temperature measure loop detects ambient temperature information and to the single-chip microcontroller output environment temperature voltage V0, and
Room temperature lower voltage limit V is set in the single-chip microcontroller1With room temperature upper voltage limit V2,
As the V0No more than V1When, the single-chip microcontroller selects the output voltage of the low-temperature space pressure divider circuit as the wind speed
The reference voltage of measure loop；
As the V0Between V1And V2Between when, the single-chip microcontroller selects the output voltage of room temperature area pressure divider circuit as institute
State the reference voltage in wind speed measurement circuit；
As the V0Not less than V2When, the single-chip microcontroller selects the output voltage of the high-temperature region pressure divider circuit as the wind speed
The reference voltage of measure loop；
The high-temperature region pressure divider circuit includes the resistance R1 being connected in parallel and resistance R2, the resistance R1 and the resistance R2 difference
With the monolithic mechatronics；
Room temperature area pressure divider circuit includes the resistance R3 being connected in parallel and resistance R4, the resistance R3 and the resistance R4 difference
With the monolithic mechatronics；
The low-temperature space pressure divider circuit includes the resistance R5 being connected in parallel and resistance R6, the resistance R5 and the resistance R6 difference
With the monolithic mechatronics.
2. the New temperature compensation circuit according to claim 1 for pneumatic sensor, it is characterised in that: the environment
Temperature detection circuit includes the resistance R7 being connected in parallel and temperature sensor NTC, the resistance R7 and the temperature sensor NTC
Respectively with the monolithic mechatronics；
The wind speed measurement circuit includes the resistance R8 and air velocity transducer PTC being connected in parallel, resistance R8 and wind speed sensing
Device PTC respectively with the monolithic mechatronics.
3. the New temperature compensation circuit according to claim 1 for pneumatic sensor, it is characterised in that: further include electricity
Source unit, the power supply unit are divided with the high-temperature region pressure divider circuit, room temperature area pressure divider circuit, the low-temperature space respectively
Circuit, the environment temperature measure loop and wind speed measurement circuit electrical connection.
4. the New temperature compensation circuit according to claim 3 for pneumatic sensor, it is characterised in that: the power supply
Unit include the Industrial Frequency Transformer T1 being sequentially connected electrically, low frequency rectifier bridge DB1 and voltage-stabiliser tube U1, the voltage-stabiliser tube U1 respectively with institute
State high-temperature region pressure divider circuit, room temperature area pressure divider circuit, the low-temperature space pressure divider circuit, the environment temperature measure loop and
The wind speed measurement circuit electrical connection.
5. the New temperature compensation circuit according to claim 1 for pneumatic sensor, it is characterised in that: further include simultaneously
Join the pilot lamp loop and relay circuit of connection, the pilot lamp loop and the relay circuit respectively with the single-chip microcontroller
Electrical connection；
The relay circuit is used to convert high-power signal for the weak signal that the single-chip microcontroller exports.
6. the New temperature compensation circuit according to claim 5 for pneumatic sensor, it is characterised in that: the instruction
Lamp circuit includes the resistance R9 being sequentially connected electrically with the single-chip microcontroller and diode D1, the diode D1 ground connection；
The relay circuit includes the triode Q1 being sequentially connected electrically with the single-chip microcontroller and relay RELAY1, three pole
The emitter of the base stage of pipe Q1 and the monolithic mechatronics, the triode Q1 is grounded, the collector of the triode Q1 with
The relay RELAY1 electrical connection.
7. the New temperature compensation circuit according to claim 6 for pneumatic sensor, it is characterised in that: the relay
Device circuit further includes that the diode D2, the diode D2 being arranged in parallel with the relay RELAY1 constitute the relay
The aerial drainage diode of RELAY1.
8. a kind of compensation method of -7 any New temperature compensation circuits for pneumatic sensor according to claim 1,
It is characterized by: environment temperature measure loop detection ambient temperature information and to the single-chip microcontroller output environment temperature voltage
V0, and room temperature lower voltage limit V is set in the single-chip microcontroller1With room temperature upper voltage limit V2,
As the V0No more than V1When, the single-chip microcontroller selects the output voltage of the low-temperature space pressure divider circuit as the wind speed
The reference voltage of measure loop；
As the V0Between V1And V2Between when, the single-chip microcontroller selects the output voltage of room temperature area pressure divider circuit as institute
State the reference voltage in wind speed measurement circuit；
As the V0Not less than V2When, the single-chip microcontroller selects the output voltage of the high-temperature region pressure divider circuit as the wind speed
The reference voltage of measure loop.
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| CN201710238084.6A CN107192471B (en) | 2017-04-13 | 2017-04-13 | It is a kind of for the New temperature compensation circuit of pneumatic sensor and compensation method |
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| CN112082181B (en) * | 2019-06-12 | 2021-08-31 | 广东合捷电器股份有限公司 | Purifier and smoke ventilator |
| CN110412663B (en) * | 2019-08-07 | 2021-03-23 | 北京卫星环境工程研究所 | A high-altitude flat-panel meteorological parameter measurement system and measurement method |
| CN114911295A (en) * | 2021-02-09 | 2022-08-16 | 中国科学院微电子研究所 | Compensation circuit, method and device for a sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU788003A1 (en) * | 1979-02-12 | 1980-12-15 | Агрофизический научно-исследовательский институт | Flow rate measuring method |
| JPH0664080B2 (en) * | 1989-03-10 | 1994-08-22 | 山武ハネウエル株式会社 | Temperature compensation circuit for flow sensor |
| JPH1164063A (en) * | 1997-08-22 | 1999-03-05 | Mitsui Mining & Smelting Co Ltd | Flow rate sensor |
| JP2004309202A (en) * | 2003-04-03 | 2004-11-04 | Kona Sapporo Kk | Wind speed, and air volume sensor |
| CN102331266A (en) * | 2011-06-13 | 2012-01-25 | 无锡格林通安全装备有限公司 | Multi-parameter gas sensor compensating method |
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| TWI467540B (en) * | 2012-12-14 | 2015-01-01 | Upi Semiconductor Corp | Reference voltage generator of gate driving circuit and reference voltage generating method |
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| CN204214884U (en) * | 2014-12-01 | 2015-03-18 | 北京欧美利华科技有限公司 | Based on the data collector of ThermoAir3 anemoscope |
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2017
- 2017-04-13 CN CN201710238084.6A patent/CN107192471B/en active Active
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