CN109839541A - For measuring the measuring device of thermosensitive resistance type detector time constant characteristic - Google Patents
For measuring the measuring device of thermosensitive resistance type detector time constant characteristic Download PDFInfo
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- CN109839541A CN109839541A CN201711206515.7A CN201711206515A CN109839541A CN 109839541 A CN109839541 A CN 109839541A CN 201711206515 A CN201711206515 A CN 201711206515A CN 109839541 A CN109839541 A CN 109839541A
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- pipeline
- resistance type
- temperature
- thermosensitive resistance
- type sensor
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Abstract
It is a kind of for measuring the measuring device of thermosensitive resistance type detector time constant characteristic, it include: the controlled thermal source adjusted for temperature in pipeline and the adjustable fan adjusted for wind speed in pipeline for being set to pipeline one end, the thermosensitive resistance type sensor being set in the middle part of pipeline and its rack, the temperature sensor inside pipeline, air velocity transducer and coupled control module, in which: temperature sensor, thermosensitive resistance type sensor and air velocity transducer axially set gradually and are located at the different radial sections of pipeline along pipeline；The present apparatus being capable of convenient and efficient and accurately measure thermosensitive resistance type sensor time constant.
Description
Technical field
It is specifically a kind of for measuring thermistor the present invention relates to a kind of technology of characteristic of semiconductor detection field
The measuring device of type detector time constant characteristic.
Background technique
Thermistor class sensor plays key player in industrial production and research practice, the survey to its performance parameter
Amount is also to have very high requirement, and wherein time constant is a very important index, belongs to the dynamic characteristic of sensor, refers to and work as
When environment temperature is mutated, resistance temperature is changed to the time required when the 63.2% of final temperature by initial temperature.In industry
Increasingly mature today increasingly higher demands also proposed to the time constant and response speed of sensor.However, at present specially
Device or equipment for measuring such sensor dynamic characteristic parameter is not yet mature.
Summary of the invention
The present invention In view of the above shortcomings of the prior art, proposes a kind of for measuring thermosensitive resistance type sensor time
The measuring device of constant characteristic, convenient and efficient and accurately measure thermosensitive resistance type sensor time constant.
The present invention is achieved by the following technical solutions:
The present invention includes: to be set to the controlled thermal source adjusted for temperature in pipeline of pipeline one end and for wind in pipeline
The adjustable fan of velocity modulation section, the thermosensitive resistance type sensor being set in the middle part of pipeline and its rack, the temperature inside pipeline
Sensor, air velocity transducer and coupled control module, in which: temperature sensor, thermosensitive resistance type sensor and wind speed
Sensor axially sets gradually and is located at the different radial sections of pipeline along pipeline.
The control module includes: data acquisition unit and time constant analytical unit, in which: data acquisition unit point
Be not connected with temperature sensor, thermosensitive resistance type sensor and air velocity transducer shrinkage temperature analog signal, wind speed simulation signal
And the temperature temperature-sensitive signal of thermosensitive resistance type sensor output, time constant analytical unit are acquired according to data acquisition unit
Information, under the premise of temperature and wind speed are met the requirements, to thermosensitive resistance type sensor output temperature temperature-sensitive signal statistics its
The relation curve changed over time carries out the calculating of time constant.
Technical effect
Compared with prior art, the present invention is designed by stringent structure, ensure that in heat source and blower work, pipeline
Measurement environment required by tested sensor can be stably and normally generated in the case where error very little；Temperature and wind speed sensing
Device can accurately measure the environmental information of thermosensitive resistance type sensor position under the premise of not influencing and measuring environment；Heat
Quick resistance type sensor can be convenient for changing by secured fast clamp, and it is adjustable to enter pipe front position, be accurately positioned after entering pipe.This hair
Bright to be designed by effective control module, data information required for capable of real-time and accurately collecting simultaneously passes through time constant number
The time constant result of thermosensitive resistance type sensor is quickly obtained from a large amount of measurement data according to parser.
Detailed description of the invention
Fig. 1 is principle schematic diagram of the present invention；
Fig. 2 is schematic structural view of the invention；
Fig. 3 is thermosensitive resistance type installation device of sensor schematic diagram；
Fig. 4 is temperature sensor, air velocity transducer and thermosensitive resistance type sensor position schematic diagram a；
Fig. 5 is temperature sensor, air velocity transducer and thermosensitive resistance type sensor position schematic diagram b；
In figure: controlled thermal source 1, adjustable fan 2, pipeline 3, thermosensitive resistance type sensor 4, temperature sensor 5, wind speed sensing
Device 6, thermosensitive resistance type sensor 7, rack 8, pedestal 9, sliding rail 10, clamping device 11, guide rail 12, sliding block 13, metal clip 14, butterfly
Shape screw 15, pedestal 16, partition 17.
Specific embodiment
As depicted in figs. 1 and 2, the present embodiment include: be set to 3 one end of pipeline for temperature in pipeline 3 adjust can
Control heat source 1 and the adjustable fan 2 adjusted for wind speed in pipeline 3, the thermosensitive resistance type sensor 7 for being set to the middle part of pipeline 3 and
Its rack 8, the temperature sensor 5 inside pipeline 3, air velocity transducer 6 and coupled control module, in which: temperature
Sensor 5, thermosensitive resistance type sensor 7 and air velocity transducer 6 are along the axial different diameters set gradually and be located at pipeline 3 of pipeline 3
To section.
The control module 18 includes: data acquisition unit and time constant analytical unit, in which: data acquisition unit
Be connected with temperature sensor, thermosensitive resistance type sensor and air velocity transducer shrinkage temperature analog signal, wind speed simulation letter respectively
Number and the output of thermosensitive resistance type sensor temperature temperature-sensitive signal, time constant analytical unit acquires according to data acquisition unit
Information, under the premise of temperature and wind speed are met the requirements, to thermosensitive resistance type sensor output temperature temperature-sensitive signal statistics
Its relation curve changed over time obtains the time constant of the sensor by autonomous parser.
The parser, in particular to: using the output mean value under normality stable case as initial value, consider measurement
The disturbing factor of response process is influenced in the process, and initial value, as corner value, stablizes feelings multiplied by 1.01 error coefficient with final state
Output valve under condition is as end value, using the curve between initial value and end value as entire response process curve, take its by
Corner temperature change to final temperature 63.2% when required time as its time constant result, i.e. T time constant=T
[(final-V of V is initial) × 63.2%+V is initial]-T (1.01 × V is initial).
The temperature range of the controlled thermal source 1 pipeline inner ring border temperature under -30 DEG C~500 DEG C, present apparatus structure is missed
Difference is within ± 0.5 DEG C
The adjustable range of the controllable blower 2 pipeline inner ring border air speed error at 0m/s~50m/s, present apparatus structure
Within 1%.
The pipeline 3, caliber d meet: Q=π d2V/4, in which: flow velocity v, 2 flow Q of blower, the caliber of the pipeline 3
It is designed according to the flow rates demand of controllable 2 air quantity of blower and test environment, the caliber of the pipeline 3 is 3m.
As shown in figure 3, the rack 8 includes: to be fixed on 3 side of pipeline pedestal used for positioning, be set to outside pipeline 3
The sliding rail in portion and the clamping device 11 being attached thereto, in which: the end of clamping device 11 and 7 phase of thermosensitive resistance type sensor
Even.
As shown in Fig. 3~Fig. 5, the sliding rail is used to adjust the position that thermosensitive resistance type sensor 7 is put into before pipeline 3,
It is specifically included: guide rail 12 and sliding block 13, guide rail stroke 1m.
The clamping device 11 is specific to wrap for easy securely clamping and quick-replaceable thermosensitive resistance type sensor 7
It includes: metal clip 14 and butterfly screws 15.
The pedestal includes: that pedestal 16 and partition 17 are constituted, in which: pedestal 16 and 3 surface of pipeline are without the perfect patch of protrusion
It closes, 17 present position of partition is demarcated in advance, when sensor is put into, is put into pipeline 3 for positioning temperature-sensitive resistance type sensor 7
The position in portion, location error ± 1mm.
The temperature sensor 5 is set to pipeline 3 with air velocity transducer 6 for measuring 3 environment temperature of pipeline simultaneously
Different cross section is in arranged adjacent with thermosensitive resistance type sensor 7, accurately measures the temperature of 7 present position of thermosensitive resistance type sensor
Degree.
The air velocity transducer 6 is set to pipeline 3 with temperature sensor 5 for measuring 3 ambient wind velocity of pipeline simultaneously
Different cross section accurately measures the wind speed of 7 present position of thermosensitive resistance type sensor with 7 arranged adjacent of thermosensitive resistance type sensor.
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (7)
1. a kind of for measuring the measuring device of thermosensitive resistance type detector time constant characteristic characterized by comprising setting
In the controlled thermal source adjusted for temperature in pipeline of pipeline one end and the adjustable fan adjusted for wind speed in pipeline, it is set to
Thermosensitive resistance type sensor and its rack in the middle part of pipeline, the temperature sensor inside pipeline, air velocity transducer and and its
Connected control module, in which: temperature sensor, thermosensitive resistance type sensor and air velocity transducer are axially set gradually along pipeline
And it is located at the different radial sections of pipeline；
The control module includes: data acquisition unit and time constant analytical unit, in which: data acquisition unit respectively with
Temperature sensor, thermosensitive resistance type sensor be connected with air velocity transducer shrinkage temperature analog signal, wind speed simulation signal and
The temperature temperature-sensitive signal of thermosensitive resistance type sensor output, the letter that time constant analytical unit is acquired according to data acquisition unit
Breath, under the premise of temperature and wind speed are met the requirements, to thermosensitive resistance type sensor output temperature temperature-sensitive signal statistics its with
The relation curve of time change obtains the time constant of the sensor by autonomous parser；
The parser, in particular to: using the output mean value under normality stable case as initial value, consider measurement process
It is middle influence response process disturbing factor, initial value multiplied by 1.01 error coefficient as corner value, under final state stable case
Output valve take it by corner using the curve between initial value and end value as entire response process curve as end value
Temperature change to final temperature 63.2% when required time as its time constant result, i.e. [(V is most by T time constant=T
- V is initial eventually) × 63.2%+V is initial]-T (1.01 × V is initial).
2. measuring device according to claim 1, characterized in that the pipeline, caliber d meet: Q=π d2V/4,
In: the caliber of flow velocity v, compressor flow Q, the pipeline are designed according to the flow rates demand of controllable fan delivery and test environment.
3. measuring device according to claim 1, characterized in that the rack includes: to be fixed on pipeline side to be used for
The pedestal of positioning, the sliding rail for being set to pipeline external and the clamping device being attached thereto, in which: the end of clamping device and heat
Quick resistance type sensor is connected.
4. measuring device according to claim 3, characterized in that the sliding rail is for adjusting thermosensitive resistance type sensor
Position before being put into pipeline, specifically includes: guide rail and sliding block.
5. measuring device according to claim 3, characterized in that the clamping device is for easy securely clamping and fastly
Speed replacement thermosensitive resistance type sensor, specifically includes: metal clip and butterfly screws.
6. measuring device according to claim 3, characterized in that the pedestal includes: that pedestal and partition are constituted,
In: pedestal is bonded with pipe surface without protrusion perfection, and partition present position is demarcated in advance, when sensor is put into, for positioning
Thermosensitive resistance type sensor is put into the position inside pipeline.
7. measuring device according to claim 1, characterized in that the temperature sensor is for measuring pipeline environment temperature
Degree, the different cross section of pipeline is set to air velocity transducer simultaneously, is in arranged adjacent with thermosensitive resistance type sensor, is accurately measured
The temperature of thermosensitive resistance type sensor present position；The air velocity transducer is passed for measuring pipeline ambient wind velocity with temperature
Sensor is set to the different cross section of pipeline simultaneously, with thermosensitive resistance type sensor arranged adjacent, accurately measures thermosensitive resistance type biography
The wind speed of sensor present position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711206515.7A CN109839541B (en) | 2017-11-27 | 2017-11-27 | Measuring device for measuring time constant characteristic of thermistor type sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711206515.7A CN109839541B (en) | 2017-11-27 | 2017-11-27 | Measuring device for measuring time constant characteristic of thermistor type sensor |
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| CN109839541A true CN109839541A (en) | 2019-06-04 |
| CN109839541B CN109839541B (en) | 2021-01-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115855317A (en) * | 2023-02-21 | 2023-03-28 | 山东省科学院海洋仪器仪表研究所 | Thermistor temperature sensor response speed testing device and method |
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| JP2007129803A (en) * | 2005-11-01 | 2007-05-24 | Fuji Electric Systems Co Ltd | Power stabilizing system using power storage facility, and its controller |
| CN102331444A (en) * | 2011-06-17 | 2012-01-25 | 华中科技大学 | Device for automatically testing aging performance and thermal time constant of thermistor |
| CN104755940A (en) * | 2012-12-13 | 2015-07-01 | 三菱综合材料株式会社 | Airflow sensor |
| CN204694378U (en) * | 2015-06-11 | 2015-10-07 | 广东优科检测技术服务有限公司 | A kind of resistivity-temperature characteristics detector of thermistor |
| CN205317865U (en) * | 2015-11-24 | 2016-06-15 | 中国人民解放军63655部队 | Thermistor dynamic characteristic measuring device |
| CN106933719A (en) * | 2015-12-29 | 2017-07-07 | 施耐德电气It公司 | Frame air-flow monitoring system and method |
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Patent Citations (6)
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| JP2007129803A (en) * | 2005-11-01 | 2007-05-24 | Fuji Electric Systems Co Ltd | Power stabilizing system using power storage facility, and its controller |
| CN102331444A (en) * | 2011-06-17 | 2012-01-25 | 华中科技大学 | Device for automatically testing aging performance and thermal time constant of thermistor |
| CN104755940A (en) * | 2012-12-13 | 2015-07-01 | 三菱综合材料株式会社 | Airflow sensor |
| CN204694378U (en) * | 2015-06-11 | 2015-10-07 | 广东优科检测技术服务有限公司 | A kind of resistivity-temperature characteristics detector of thermistor |
| CN205317865U (en) * | 2015-11-24 | 2016-06-15 | 中国人民解放军63655部队 | Thermistor dynamic characteristic measuring device |
| CN106933719A (en) * | 2015-12-29 | 2017-07-07 | 施耐德电气It公司 | Frame air-flow monitoring system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115855317A (en) * | 2023-02-21 | 2023-03-28 | 山东省科学院海洋仪器仪表研究所 | Thermistor temperature sensor response speed testing device and method |
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