CN106908165A - Using the method and apparatus of thermosensitive resistance measurement temperature - Google Patents
Using the method and apparatus of thermosensitive resistance measurement temperature Download PDFInfo
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- CN106908165A CN106908165A CN201510977921.8A CN201510977921A CN106908165A CN 106908165 A CN106908165 A CN 106908165A CN 201510977921 A CN201510977921 A CN 201510977921A CN 106908165 A CN106908165 A CN 106908165A
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- thermistor
- temperature
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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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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides a kind of method of utilization thermosensitive resistance measurement temperature, it is comprised the following steps：The voltage V at measurement temperature-sensitive measurement thermistor two endst, to obtain thermistor resistance Rt；Calculate the power consumption W of thermistor；Thermistor is calculated because of the temperature T of thermistor change caused by heatingb；And based on normal temperature temperature T0, thermistor at normal temperatures resistance R, thermistor in T1Under thermistor resistance Rt, thermistor have related parameter B values and thermistor because heating caused by thermistor change temperature TbTo calculate the temperature T of the environment residing for thermistor1.Present invention also offers a kind of device of utilization thermosensitive resistance measurement temperature, based on the temperature T that the environment residing for thermistor is calculated using the method for thermosensitive resistance measurement temperature1.Due to considering thermistor because of the temperature T of thermistor change caused by heatingb, improve the temperature T of the environment residing for thermistor1Precision.
Description
Technical field
The present invention relates to a kind of method and apparatus of measurement temperature, in particular to a kind of profit
With the method and apparatus of thermosensitive resistance measurement temperature.
Background technology
The thermally sensitive semiconductor devices of thermistor, shows difference at different temperature
Resistance value.Thermistor is divided into semistor and negative tempperature coefficient thermistor,
Semistor resistance value when temperature is higher is bigger, negative tempperature coefficient thermistor
When temperature is higher, resistance value is lower.Oscillating circuit is the circuit for referring to produce oscillating current
Oscillating current is a kind of electric current of size and Orientation all generating period changes.
The device of the utilization thermosensitive resistance measurement temperature of prior art includes thermistor and other yuan
Part connects to form oscillating circuit, and the resistance value of thermistor is with temperature change, therefore, can lead to
Cross the frequency of oscillation of measurement oscillating circuit and calculate corresponding temperature by corresponding frequencies.Due to
Oscillating circuit is also influenceed in addition to being influenceed by thermistor by other electronic devices
(such as electric capacity), while thermistor itself can also generate heat after powered up, the change of electric current is led
The change of thermistor self-heating is caused, this will cause the change of frequency of oscillation, so as to influence to survey
The precision of amount temperature, the precision of the device of the utilization thermosensitive resistance measurement temperature of prior art is
±0.1℃。
For this reason, it may be necessary to a kind of method for providing the device and measurement temperature of higher precision measurement temperature.
The content of the invention
The present invention is intended to provide a kind of method and apparatus of utilization thermosensitive resistance measurement temperature, to solve
Certainly in the prior art using the defect that thermosensitive resistance measurement ambient temperature measurement precision is relatively low.
In one embodiment of the invention, computing module using following methods come measurement temperature meter
The temperature of local environment.
A kind of method of utilization thermosensitive resistance measurement temperature, for utilizing thermosensitive resistance measurement
The device of temperature, it is comprised the following steps：
Step 1：The voltage V at measurement temperature-sensitive measurement thermistor two endst, to obtain temperature-sensitive electricity
Resistance resistance Rt；
Step 2：Calculate the power consumption W of thermistor；
Step 3：Thermistor is calculated because of the temperature T of thermistor change caused by heatingb；And
Step 4：Based on normal temperature temperature T0, thermistor resistance R, temperature-sensitive at normal temperatures
Resistance is in T1Under thermistor resistance Rt, thermistor have related parameter B values and temperature-sensitive electricity
Hinder because of the temperature T of thermistor change caused by heatingbTo calculate the environment residing for thermistor
Temperature T1。
In one embodiment of the invention, in above-mentioned steps 1 so that thermistor resistance
RtWith precision resistance R1Series connection, in thermistor resistance RtWith precision resistance R1Two ends apply
Constant voltage, precision resistance R1It is the constant resistance of resistance, flows through thermistor RtWith
Precision resistance R1Electric current it is equal, by the voltage V for measuring thermistor two endst, can obtain
Obtain thermistor resistance Rt。
In one embodiment of the invention, in step 2 above, the power consumption of thermistor
W=Vt 2/Rt。
In one embodiment of the invention, in above-mentioned steps 3, thermistor is led because of heating
The temperature T of the thermistor change of causeb=W/ α, α are the diffusion coefficient of thermistor.
In one embodiment of the invention, the temperature T of the environment residing for thermistor1By formulaCalculate and obtain.
In one embodiment of the invention, in above-mentioned steps 4, using thermosensitive resistance measurement
The device of temperature includes the temperature sensor, collecting sensor signal module, the mould that are sequentially connected electrically
Intend signal conversion module and computing module, the computing module is used to calculate residing for quick resistance
The temperature T of environment1。
Another embodiment of the invention additionally provides a kind of using thermosensitive resistance measurement temperature
Device, it includes the temperature sensor, collecting sensor signal module, the mould that are sequentially connected electrically
Intend signal conversion module and computing module, computing module is based on the above method and calculates thermistor
Residing environment temperature T1。
The technical effects of the invention are that, due to considering thermistor because of temperature-sensitive caused by heating
The temperature T of resistance variationsb, therefore it is effectively improved the temperature T of environment residing for thermistor1
Precision.For example, in one embodiment, the certainty of measurement of thermistor of the present invention is
± 0.05 DEG C, it is higher than the temperature measurement accuracy of prior art.
Brief description of the drawings
Referring to the drawings, the disclosure will be easier to understand.Those skilled in the art
It is easily understood that：These accompanying drawings are used only for illustrating technical scheme, and simultaneously
It is not intended to be construed as limiting protection scope of the present invention.In figure：
Fig. 1 shows the utilization thermosensitive resistance measurement temperature of an implementation method of the invention
The device of degree.
Part and numbered list
| 1 | Temperature sensor |
| 2 | Collecting sensor signal module |
| 3 | Temperature sensor is powered certain block |
| 4 | Analog signal modular converter |
| 5 | Temperature computation module |
| 6 | Bluetooth communication modules |
| 7 | Display module |
| 8 | Power module |
Specific embodiment
Fig. 1 and following description describe optional embodiment of the invention to instruct this area skill
How art personnel implement and reproduce the present invention.In order to instruct technical solution of the present invention, simplified or
Eliminate some conventional aspects.Those skilled in the art should understand that from these implementation methods
Modification or replacement will fall within the scope of the present invention.Those skilled in the art should understand that following spies
Levying can combine to form multiple modifications of the invention in a variety of ways.Thus, the present invention not
Following optional embodiments are confined to, and are only limited by claim and their equivalent.
Fig. 1 shows the utilization thermosensitive resistance measurement temperature of an implementation method of the invention
The device of degree.As shown in figure 1, the device of the measurement temperature according to an embodiment of the invention
Including temperature sensor 1, collecting sensor signal module 2, the and of analog signal modular converter 4
Computing module 5, wherein temperature sensor 1, collecting sensor signal module 2, analog signal
Modular converter 4 and computing module 5 are sequentially connected electrically.Temperature sensor power supply module 3 with
Temperature sensor 1 is electrically connected, and power module 8 is passed with temperature sensor power supply module 3, temperature
Sensor signal acquisition module 2, analog signal modular converter 4, temperature computation module 5, bluetooth
Transport module 6 and display module 7 are electrically connected, for these module for power supply, temperature computation
Module 5 is electrically connected with Bluetooth communication modules 6 and display module 7, for result of calculation to be led to
Cross Bluetooth communication modules and be transferred to external equipment and for result of calculation to be included in display mould
On block 7.
In one embodiment of the invention, the collection of collecting sensor signal module 2 comes from temperature
The analog signal of sensor 1, the analog signal is converted into number by analog signal modular converter 4
Word signal, temperature computation module 5 calculates thermistor local environment according to the data signal for receiving
Temperature, and result of calculation is included on display module 7, and by Bluetooth communication modules 6
Result of calculation is transferred to external equipment.In one embodiment of the invention, external equipment is
Mobile phone, degree sensing module 1 is thermistor.
In one embodiment of the invention, computing module 5 using following methods come measurement temperature
Count the temperature of local environment.
A kind of method of utilization thermosensitive resistance measurement temperature, for utilizing thermosensitive resistance measurement
The device of temperature, it is comprised the following steps：
Step 1：The voltage V at measurement temperature-sensitive measurement thermistor two endst, to obtain temperature-sensitive electricity
Resistance resistance Rt；
Step 2：Calculate the power consumption W of thermistor；
Step 3：Thermistor is calculated because of the temperature T of thermistor change caused by heatingb；And
Step 4：Based on normal temperature temperature T0, thermistor resistance R, temperature-sensitive at normal temperatures
Resistance is in T1Under thermistor resistance Rt, thermistor have related parameter B values and temperature-sensitive electricity
Hinder because of the temperature T of thermistor change caused by heatingbTo calculate the environment residing for thermistor
Temperature T1。
In one embodiment of the invention, in above-mentioned steps 1 so that thermistor resistance
RtWith precision resistance R1Series connection, in thermistor resistance RtWith precision resistance R1Two ends apply
Constant voltage, precision resistance R1It is that (admissible error of resistance value is in % for the constant resistance of resistance
The resistance of the high precision within 0.05), flow through thermistor RtWith precision resistance R1Electricity
Stream is equal, by the voltage V for measuring thermistor two endst, it is obtained in that thermistor resistance
Rt。
In one embodiment of the invention, in step 2 above, the power consumption of thermistor
W=Vt 2/Rt。
In one embodiment of the invention, in above-mentioned steps 3, thermistor is led because of heating
The temperature T of the thermistor change of causeb=W/ α,α is the diffusion coefficient of thermistor.
In one embodiment of the invention, the temperature T of the environment residing for thermistor1By formulaCalculate and obtain.
In one embodiment of the invention, in above-mentioned steps 4, using thermosensitive resistance measurement
The device of temperature includes the temperature sensor, collecting sensor signal module, the mould that are sequentially connected electrically
Intend signal conversion module and computing module, the computing module is used to calculate residing for quick resistance
The temperature T of environment1。
Another embodiment of the invention additionally provides a kind of using thermosensitive resistance measurement temperature
Device, it includes the temperature sensor, collecting sensor signal module, the mould that are sequentially connected electrically
Intend signal conversion module and computing module, computing module is based on the above method and calculates thermistor
Residing environment temperature T1。
In above-mentioned steps, diffusion coefficient α and the B value of thermistor is (relevant with thermistor
Parameter) by producer provide, T0Under for normal temperature (25), R is thermistor in T0Normal temperature (25)
Under normal resistance, α for thermistor diffusion coefficient unit for milliwatt/degree Celsius, T1
The temperature of the environment residing for thermistor.
In one embodiment of the invention, for step 1, due to thermistor resistance
RtWith precision resistance R1Series connection, and thermistor resistance RtWith precision resistance R1Two ends apply
Voltage be constant, precision resistance R1Resistance be also constant, and flow through thermistor
Resistance RtWith precision resistance R1Electric current it is equal, therefore by measuring the voltage at thermistor two ends
Vt, thermistor resistance R can be obtainedt。
Then formula W=V is passed through in step 2t 2/RtThe power consumption W of thermistor can be obtained,
The diffusion coefficient α of the thermistor provided by producer can be provided by inquiry, then utilized
Tb=W/ α calculate thermistor because of the temperature T of thermistor change caused by heatingb, cross and inquire about
The parameter B value relevant with thermistor provided by producer can be obtained, then
UtilizeCalculate the temperature T of the environment residing for thermistor1。
The technical effects of the invention are that, due to considering thermistor because of temperature-sensitive caused by heating
The temperature T of resistance variationsb, therefore it is effectively improved the temperature T of environment residing for thermistor1
Precision.For example, in one embodiment, the certainty of measurement of thermistor of the present invention is
± 0.05 DEG C, it is higher than the temperature measurement accuracy of prior art.
Claims (6)
1. a kind of method of utilization thermosensitive resistance measurement temperature, for utilizing thermosensitive resistance measurement
The device of temperature, it is comprised the following steps：
Step 1：The voltage V at measurement temperature-sensitive measurement thermistor two endst, to obtain temperature-sensitive electricity
Resistance resistance Rt；
Step 2：Calculate the power consumption W of thermistor；
Step 3：Thermistor is calculated because of the temperature T of thermistor change caused by heatingb；And
Step 4：Based on normal temperature temperature T0, thermistor resistance R, temperature-sensitive at normal temperatures
Resistance is in T1Under thermistor resistance Rt, thermistor have related parameter B values and temperature-sensitive electricity
Hinder because of the temperature T of thermistor change caused by heatingbTo calculate the environment residing for thermistor
Temperature T1, the temperature T of the environment residing for thermistor1By formulaCalculate and obtain.
2. method according to claim 1, it is characterised in that in above-mentioned steps 1,
So that thermistor resistance RtWith precision resistance R1Series connection, in thermistor resistance RtAnd precision
Resistance R1The constant voltage that two ends apply, precision resistance R1It is the constant resistance of resistance, stream
Cross thermistor RtWith precision resistance R1Electric current it is equal, by measuring thermistor two ends
Voltage Vt, it is obtained in that thermistor resistance Rt。
3. method according to claim 1, it is characterised in that in step 2 above,
The power consumption W=V of thermistort 2/Rt。
4. method according to claim 1, it is characterised in that in above-mentioned steps 3,
Thermistor is because of the temperature T of thermistor change caused by heatingb=W/ α, α are thermistor
Diffusion coefficient.
5. method according to claim 1, it is characterised in that utilize thermosensitive resistance measurement
The device of temperature includes the temperature sensor, collecting sensor signal module, the mould that are sequentially connected electrically
Intend signal conversion module and computing module, the computing module is used to calculate residing for quick resistance
The temperature T of environment1。
6. a kind of device of utilization thermosensitive resistance measurement temperature, it includes the temperature being sequentially connected electrically
Degree sensor, collecting sensor signal module, analog signal modular converter and computing module,
The method that wherein described computing module is based on any one of claim 1-5 calculates quick electricity
The temperature T of the residing environment of resistance1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977921.8A CN106908165A (en) | 2015-12-23 | 2015-12-23 | Using the method and apparatus of thermosensitive resistance measurement temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977921.8A CN106908165A (en) | 2015-12-23 | 2015-12-23 | Using the method and apparatus of thermosensitive resistance measurement temperature |
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| Publication Number | Publication Date |
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| CN106908165A true CN106908165A (en) | 2017-06-30 |
Family
ID=59200104
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| CN201510977921.8A Pending CN106908165A (en) | 2015-12-23 | 2015-12-23 | Using the method and apparatus of thermosensitive resistance measurement temperature |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113030160A (en) * | 2021-02-05 | 2021-06-25 | 华荣科技股份有限公司 | Method and system for obtaining highest surface temperature value of explosion suppression device |
| CN114201044A (en) * | 2021-12-09 | 2022-03-18 | 浙江理工大学 | A human-like tactile reproducing device and method with interactive function |
| CN116593764A (en) * | 2023-03-29 | 2023-08-15 | 浙江朗德电子科技有限公司 | High-precision self-calibration current sensor module and calibration method thereof |
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Cited By (4)
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| CN116593764A (en) * | 2023-03-29 | 2023-08-15 | 浙江朗德电子科技有限公司 | High-precision self-calibration current sensor module and calibration method thereof |
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Application publication date: 20170630 |
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