CN109612607B - Temperature sensor reaction speed testing method - Google Patents

Temperature sensor reaction speed testing method Download PDF

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CN109612607B
CN109612607B CN201811606362.XA CN201811606362A CN109612607B CN 109612607 B CN109612607 B CN 109612607B CN 201811606362 A CN201811606362 A CN 201811606362A CN 109612607 B CN109612607 B CN 109612607B
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temperature
module
temperature sensor
value
sensor
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CN109612607A (en
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邓雪勇
陈俞龙
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Guangzhou Shenggao Measurement & Control Technology Co ltd
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Guangzhou Shenggao Measurement & Control Technology Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00Testing or calibrating of thermometers
    • G01K15/007Testing

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  • General Physics & Mathematics (AREA)
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Abstract

The invention discloses a method for testing the reaction speed of a temperature sensor, which specifically comprises the following steps: s1, preparing a temperature sensor to be detected, preparing a constant temperature tank, stabilizing the constant temperature tank at a required target temperature for later use, inputting a target temperature value through a target temperature value input module by an operator, inputting a target temperature value proportion value as a calculated reaction time cut-off value, accessing the temperature sensor to be detected into an adaptive channel selection module, selecting a sensor type matched with the temperature sensor to be detected, and putting the temperature sensor to be detected into the constant temperature tank. Relates to the technical field of sensor detection. The method for testing the reaction speed of the temperature sensor can modify the proportion of the target temperature value, can correspondingly adjust the proportion value to be in an effective range slightly lower than the nominal precision of the sensor according to the nominal precision level of the sensor, can detect the reaction speed of all types of temperature sensors, and can accurately detect the reaction speed of the temperature sensor.

Description

Temperature sensor reaction speed testing method
Technical Field
The invention relates to the technical field of sensor detection, in particular to a method for testing the reaction speed of a temperature sensor.
Background
The temperature sensor is a sensor capable of sensing temperature and converting the temperature into an available output signal, the temperature sensor is a core part for temperature measurement, the variety is various, temperature sensor components and parts are thermocouples, a thermal resistor is a main flow measurement mode, the temperature sensor directly influences the reaction speed of temperature measurement due to the structure and the packaging mode of the temperature sensing element, the term is T99, or T95 or T90, wherein T represents a target temperature value to be measured by the temperature sensor, 99 represents time required for the temperature sensor to reach 99% of a T value (target value) from normal temperature, and similarly, T95 is time required for the temperature sensor to reach 95% of the T value from normal temperature, T90 is time required for the temperature sensor to reach 90% of the T value from normal temperature, the time is important for the process and the reality of temperature measurement, the shorter the time is, the real change condition of the temperature of a measured object can be reflected in time, and the temperature sensor is a key index especially for scientific test, and the quality and the consistency of the packaging structure of the temperature sensor are obtained, and the grade accuracy of the temperature sensor is known.
The accuracy of the sensor is different, when the measured data of the temperature sensor cannot reach the standard T99 or T95 value, for example, the temperature sensor can only detect 98.9 ℃ or below and 99 ℃ above when measuring 100 ℃ standard set value, if the temperature sensor is detected by using the method, the detection system can always calculate the time reaching the T99 target value without stopping timing, then T99 can be changed into T97 even lower proportional value such as T95, and the detection method and the detection process simultaneously obtain the reaction speed and the accuracy of the detected temperature sensor.
Disclosure of Invention
(one) solving the technical problems
Aiming at the higher and higher requirements of each industry on the measurement and the temperature control of the temperature sensor, the detection of the precision and the reaction speed of each type of temperature sensor is an important detection method for measuring the quality and the quality of the production process and the precision grade of each type of temperature sensor, the reaction speed of the temperature sensor plays the most important role in the accurate temperature control, and the faster the reaction speed of the temperature sensor is, the better the process of the temperature sensor can be represented. The problem that the reaction speed of various temperature sensors cannot be sensed is solved, the reaction speed of the temperature sensors reflects the difficult problem that the temperature control of the temperature sensors is inaccurate in the measuring process, and the method is particularly important for substances with very high temperature sensitivity, and the reaction speed and the accuracy measurement of the temperature sensors.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the method for testing the reaction speed of the temperature sensor specifically comprises the following steps:
s1, preparing a temperature sensor to be detected, preparing a constant temperature tank, stabilizing the constant temperature tank at a required target temperature for later use, inputting a target temperature value of the temperature sensor to be detected by an operator through a target temperature value input module, inputting a target temperature value proportion value as a cut-off value for calculating reaction time, accessing the temperature sensor to be detected into an adaptive channel selection module, selecting a sensor type matched with the temperature sensor to be detected, starting a detection starting module, starting the temperature detection module, simultaneously starting a real-time temperature display module and a data comparison module, acquiring a temperature value measured by the temperature detection module, and simultaneously conveying the temperature value to a central processing unit.
S2, after the constant temperature of the constant temperature tank is kept at a target temperature value, an operator can put the temperature sensor to be detected into the constant temperature tank to measure an actual temperature value, the actual temperature value can be used as a standard target temperature value to be input into the target temperature value module, the proportion coefficient reaching the cut-off temperature is input and detected through the target temperature proportion input module, at the moment, the proportion coefficient can be transmitted to the automatic calculation module through the central processing unit, the automatic calculation module can calculate the actual temperature value which needs to be reached by the sensor to be detected according to the input target temperature value and the target temperature cut-off proportion coefficient, and the proportion is smaller than a coefficient of 1, so that the function meets the condition that the temperature sensor with various precision calculates the reaction speed.
S3, an operator can put the temperature sensor prepared in the step S1 into a constant temperature tank, at the moment, the operator can start the test through a detection starting module, the temperature sensor can transmit a real-time temperature value to a temperature detection module, the temperature detection module transmits data to a real-time temperature display module and a data comparison module, the data comparison module activates a timing module to start timing through a temperature mutation value detected by the temperature detection module, when the temperature reaches a set target temperature cut-off proportion value, a central processing unit can automatically stop timing, and the calculated time is locked until a second temperature sensor to be detected starts to be detected after manual unlocking.
S4, the target temperature cut-off proportional coefficient can be set and detected simultaneously by a plurality of cut-off proportional coefficients, such as cut-off proportional grades of 99%,95%,90% and the like, and the reaction time of the temperature sensor is calculated simultaneously by the plurality of cut-off proportional coefficients so as to better evaluate the speed of the temperature sensor reaching temperature values of different proportional intervals in actual working condition measurement.
S5, detecting the reaction speed of any temperature sensor type through the sensor type selection module, or detecting the reaction speed of the temperature sensor which is converted into other types of output signals through a secondary instrument.
Preferably, the output end of the constant temperature tank is connected with the input end of the temperature sensor, the output end of the temperature sensor is connected with the input end of the temperature detection module, the output end of the temperature detection module is respectively connected with the input ends of the data comparison module and the automatic calculation module, the output end of the data comparison module is respectively connected with the input ends of the timing module and the automatic calculation module, the output end of the timing module is connected with the input end of the central processing unit, and the output end of the automatic calculation module is connected with the input end of the central processing unit.
Preferably, the output end of the target temperature proportion input module is connected with the input end of the central processing unit, and the output end of the target temperature proportion input module is connected with the input end of the central processing unit.
Preferably, the output end of the temperature sensor is connected with the input end of the channel selection module, and the output end of the channel selection module is connected with the input end of the central processing unit.
Preferably, the output end of the detection starting module is connected with the input end of the central processing unit.
(III) beneficial effects
The invention provides a method for testing the reaction speed of a temperature sensor. Compared with the prior art, the method has the following beneficial effects: the method for testing the reaction speed of the temperature sensor specifically comprises the following steps: s1, preparing a temperature sensor to be detected, preparing a constant temperature tank, stabilizing the constant temperature tank at a required target temperature for later use, inputting a target temperature value through a target temperature value input module by an operator, inputting a target temperature value proportional value as a temperature cut-off value for calculating reaction time, enabling the temperature sensor to be detected to be connected with an adaptive channel selection module, S2, after the constant temperature tank is kept at the target temperature value, enabling the operator to detect an actual temperature value through the temperature sensor to be detected, enabling an actually measured temperature value to be used as a standard target temperature value to be input into the target temperature value module, inputting a cut-off coefficient through a target temperature proportional input module, enabling the operator to start a test through a detection starting module, enabling the temperature sensor prepared in S1 to be put into the constant temperature tank, enabling the temperature sensor to transmit the real-time temperature value to a temperature detection module at the moment, enabling a plurality of proportional coefficients to be set and simultaneously detected at the same time, enabling the temperature sensor of any type to be connected with the adaptive channel selection module, enabling the temperature sensor to be detected at any time through the sensor type selection module, enabling the temperature sensor of any type to be connected with the temperature sensor or enabling the temperature sensor to be converted into a signal temperature sensor of other types to be detected through a secondary instrument to be used as a target temperature value, enabling the temperature sensor to be capable of being adjusted to be used as a target temperature value of a corresponding temperature value, enabling the temperature sensor to be adjusted to be used as a target temperature sensor in the temperature sensor with a specific temperature sensor, and a temperature sensor to be used to be accurately detected in a temperature sensor, and can be used to be accurately and accurately detected in a temperature sensor can be in a temperature sensor to be in a corresponding temperature to be detected to be in a temperature state.
Drawings
Fig. 1 is a schematic block diagram of the system of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the embodiment of the invention provides a technical scheme: a method for testing the reaction speed of a temperature sensor is described as follows:
the working principle of the temperature sensor for automatically calculating the reaction speed is as follows: for example, a constant temperature tank is set and kept at a standard temperature of 200 ℃ for standby, a target temperature value input module inputs 200 ℃, then a target temperature proportion value is set as T99, an automatic calculation module calculates 200 ℃ multiplied by 99% = 198 ℃, the value is transmitted to a central processing unit for calculating a temperature sensor to be detected as a target temperature proportion cut-off temperature value, when a detection starting module starts to measure, the temperature sensor to be detected is put into the constant temperature tank of 200 ℃, the temperature detection module obtains an actual measurement value of the temperature sensor and transmits the actual measurement value to a temperature display module and a data comparison module, the data comparison module obtains a temperature mutation value, the timing module is immediately activated to start timing, the central processing unit automatically calculates T99 time when the temperature reaches 198 ℃, the time is the time required for the temperature sensor to reach 198 ℃ from normal temperature, the temperature display module displays the temperature value output by the temperature detection module in real time until the temperature value is constant, the value is the value actually measured by the temperature sensor to be detected, the accuracy of the temperature sensor to be detected is obtained by comparing the standard value of 200 ℃ with the standard value of the constant temperature tank, for example, the value is 100.1 ℃ and the actual measurement value is 200 ℃ higher than the standard temperature value of 200.1 ℃ by 0.1 ℃.
If the timing is not stopped in the detection process, it indicates that the temperature sensor to be detected cannot reach a value of 200 ℃ or 99% =198 ℃ after being placed in the constant temperature tank, for example, the actual measured temperature value is 197 ℃, the reaction speed of the temperature sensor to be detected is invalid, and the temperature sensor to be detected needs to be taken out from the constant temperature tank for re-detection. The target temperature proportionality coefficient needs to be modified, the coefficient is lower than the coefficient value of the actual measured value at 197 ℃, the coefficient is 200 ℃ x 97% (T97) =194 ℃, the target temperature proportionality coefficient is changed to be T97, and then the temperature sensor to be detected in the normal temperature state is put into the constant temperature tank again for detection. This function accommodates the reaction rates of temperature sensors detecting different levels of accuracy.
In the invention, after the constant temperature tank is kept at the target temperature value, an operator can put the temperature sensor to be detected into the constant temperature tank to measure the actual temperature measurement value, the measured temperature value can be used as the standard target temperature value to be input into the target temperature value module, for example, the standard temperature of the constant temperature tank is 200 ℃, the measured temperature to be detected is 196 ℃, the measured 196 ℃ can be used as the target temperature value to be input into the target temperature value module, then the target temperature proportion input module inputs the reaching temperature cut-off proportion coefficient such as T99, the automatic calculation module calculates that the actual temperature measurement value to be reached by the sensor to be detected is 196 ℃ by 99% = 194.04 ℃, the central processor automatically calculates the time required from normal temperature to 194.04 ℃ after the temperature sensor to be detected is put into the constant temperature tank, and the timer stops timing and keeps the calculated time value unchanged when the temperature reaches 194.04 ℃. Until the second temperature sensor is detected by manual unlocking. This function can also measure the actual accuracy error level of the temperature sensor: 196 ℃ -200 ℃ = -4 ℃ which is 4 ℃ lower than the standard temperature value.
The method specifically comprises the following steps:
s1, preparing a temperature sensor to be detected, preparing a constant temperature tank, stabilizing the constant temperature tank at a required target temperature for later use, inputting a target temperature value through a target temperature value input module by an operator, inputting a target temperature value proportion value as a reaction time cutoff value of the temperature sensor, accessing the temperature sensor to be detected into an adaptive channel selection module, selecting a sensor type matched with the temperature sensor to be detected, starting a detection starting module, starting the temperature detection module, simultaneously starting a real-time temperature display module and a data comparison module, obtaining a temperature value measured by the temperature detection module, and simultaneously conveying the temperature value to a central processing unit.
S2, after the constant temperature tank is kept at a target temperature value, an operator can put the temperature sensor to be detected into the constant temperature tank to measure an actual temperature value, the actual temperature value can be used as a standard target temperature value to be input into the target temperature value module, the target temperature proportion input module is used for inputting an arriving temperature cut-off proportion coefficient, the proportion coefficient can be transmitted to the automatic calculation module through the central processing unit, the automatic calculation module can calculate the actual temperature value which the sensor to be detected needs to arrive according to the input target temperature value and the target temperature cut-off proportion coefficient, and the proportion is smaller than a coefficient of 1, so that the function meets the condition that the temperature sensor with various accuracies calculates the reaction speed.
S3, an operator can start the test through the detection starting module, the temperature sensor prepared in the step S1 is placed in the constant temperature tank, at the moment, the temperature sensor can transmit a real-time temperature value to the temperature detection module, the temperature detection module transmits data to the real-time temperature display module and the data comparison module, the data comparison module activates the timing module to start timing through a temperature mutation value detected by the temperature detection module, when the temperature reaches a set target temperature cut-off proportion value, the central processing unit can automatically stop timing, locks calculated time, and starts to detect a second temperature sensor to be detected after manual unlocking.
S4, the target temperature cut-off proportional coefficient can be set and detected simultaneously by a plurality of cut-off proportional coefficients, such as cut-off proportional grades of 99%,95%,90% and the like, and the reaction time of the temperature sensor is calculated simultaneously by the plurality of cut-off proportional coefficients so as to better evaluate the speed of the temperature sensor reaching temperature values of different proportional intervals in actual working condition measurement.
S5, detecting the reaction speed of any temperature sensor type through the sensor type selection module, or detecting the reaction speed of a temperature sensor which converts signals output by other types through a secondary instrument.
In the invention, the output end of the constant temperature tank is connected with the input end of the temperature sensor, the output end of the temperature sensor is connected with the input end of the temperature detection module, the output end of the temperature detection module is respectively connected with the input ends of the data comparison module and the automatic calculation module, the output end of the data comparison module is respectively connected with the input ends of the timing module and the automatic calculation module, the output end of the timing module is connected with the input end of the central processing unit, and the output end of the automatic calculation module is connected with the input end of the central processing unit.
In the invention, the output end of the target temperature proportion input module is connected with the input end of the central processing unit, and the output end of the target temperature proportion input module is connected with the input end of the central processing unit.
In the invention, the output end of the temperature sensor is connected with the input end of the channel selection module, and the output end of the channel selection module is connected with the input end of the central processing unit.
In the invention, the output end of the detection starting module is connected with the input end of the central processing unit, the output end of the sensor type selection module is connected with the input end of the central processing unit, and the output end of the real-time temperature display module is connected with the input end of the central processing unit.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A method for testing the reaction speed of a temperature sensor is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, preparing a temperature sensor to be detected, preparing a constant temperature tank, stabilizing the constant temperature tank at a required target temperature for later use, inputting a target temperature value through a target temperature value input module by an operator, inputting a target temperature value proportion value as a calculated reaction time cut-off value, accessing the temperature sensor to be detected into an adaptive channel selection module, selecting a sensor type matched with the temperature sensor to be detected, starting a detection starting module, starting the temperature detection module to work, simultaneously starting a real-time temperature display module and a data comparison module, acquiring a temperature value measured by the temperature detection module, and simultaneously conveying the temperature value to a central processing unit;
s2, after the constant temperature tank is kept at a target temperature value, an operator can insert the constant temperature tank into the temperature sensor to be detected to measure an actual temperature value, the actual temperature value can be used as a standard target temperature value to be input into a target temperature value module, a target temperature proportion input module is used for inputting a proportion coefficient of the target temperature value to be detected, which is required to reach a cutoff of the target temperature value, at the moment, the proportion coefficient is transmitted to an automatic calculation module through a central processor, the automatic calculation module can calculate the actual temperature value required to reach the temperature sensor to be detected according to the input target temperature value and the cutoff proportion coefficient of the target temperature value, and the cutoff proportion coefficient of the target temperature value is a coefficient smaller than 1, so that the function meets the condition of calculating the reaction speed of the temperature sensor with various precision;
s3, after the operator starting module starts the test, the temperature sensor to be detected prepared in the step S1 is placed into a constant temperature tank, at the moment, the temperature sensor to be detected transmits a temperature value measured in real time to a temperature detection module, the temperature detection module transmits data to a real-time temperature display module and a data comparison module, the data comparison module starts timing through a temperature mutation value activation timing module measured by the temperature detection module, when the temperature reaches a set target temperature cut-off proportion value, a central processing unit automatically stops timing, locks calculated time until the temperature sensor is manually unlocked, and starts to detect the reaction speed of a second temperature sensor;
in the step S2, the cut-off scaling factor of the target temperature value may have a plurality of cut-off scaling factors set and detected simultaneously, and the reaction time is calculated simultaneously for better evaluating the speed of the temperature sensor reaching different temperature values in practical application;
in the step S1, the sensor type selection module may detect the reaction speed of any temperature sensor type, or may be applicable to the temperature sensor that converts signals of other types into signals and outputs the signals through the secondary meter.
2. The method for testing the reaction speed of the temperature sensor according to claim 1, wherein the method comprises the following steps: the output end of the constant temperature tank is connected with the input end of the temperature sensor, the output end of the temperature sensor is connected with the input end of the temperature detection module, the output end of the temperature detection module is respectively connected with the input ends of the data comparison module and the automatic calculation module, the output end of the data comparison module is respectively connected with the input ends of the timing module and the automatic calculation module, the output end of the timing module is connected with the input end of the central processing unit, and the output end of the automatic calculation module is connected with the input end of the central processing unit.
3. A method for testing the reaction speed of a temperature sensor according to claim 1, wherein; the output end of the target temperature proportion input module is connected with the input end of the central processing unit, and the output end of the target temperature proportion input module is connected with the input end of the central processing unit.
4. A method for testing the reaction speed of a temperature sensor according to claim 1, wherein; the output end of the temperature sensor is connected with the input end of the channel selection module, and the output end of the channel selection module is connected with the input end of the central processing unit.
5. The method for testing the reaction speed of the temperature sensor according to claim 1, wherein the method comprises the following steps: the output end of the detection starting module is connected with the input end of the central processing unit, the output end of the sensor type selection module is connected with the input end of the central processing unit, and the output end of the real-time temperature display module is connected with the input end of the central processing unit.
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CN110686804A (en) * 2019-09-20 2020-01-14 广东蓄能发电有限公司 Automatic temperature control and measurement method based on temperature cooker communication
CN111765992A (en) * 2020-06-23 2020-10-13 合肥晶浦传感科技有限公司 Temperature sensor response time detection system
CN112326069A (en) * 2020-10-29 2021-02-05 深圳市爱立康医疗股份有限公司 Method for testing and analyzing heat conduction influencing component for research and development of electronic thermometer

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