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Measuring device for measuring time constant characteristic of thermistor type sensor

A thermistor and time constant technology, which is used in measuring devices, measuring resistance/reactance/impedance, measuring electrical variables, etc., can solve problems such as immature devices or equipment, and achieve the effect of convenient replacement

Active Publication Date: 2021-01-08
SHANGHAI JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the device or equipment dedicated to measuring the dynamic characteristic parameters of this type of sensor is not yet mature.

Method used

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  • Measuring device for measuring time constant characteristic of thermistor type sensor
  • Measuring device for measuring time constant characteristic of thermistor type sensor
  • Measuring device for measuring time constant characteristic of thermistor type sensor

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Embodiment Construction

[0015] Such as figure 1 and figure 2 As shown, this embodiment includes: a controllable heat source 1 arranged at one end of the pipeline 3 for temperature regulation in the pipeline 3, an adjustable fan 2 for adjusting the wind speed in the pipeline 3, and a thermistor type heat source arranged in the middle of the pipeline 3 The sensor 7 and its frame 8, the temperature sensor 5 located inside the pipeline 3, the wind speed sensor 6 and the control module connected thereto, wherein: the temperature sensor 5, the thermistor sensor 7 and the wind speed sensor 6 are sequentially arranged along the pipeline 3 axial direction And located in different radial sections of the pipeline 3 .

[0016] The control module 18 includes: a data acquisition unit and a time constant analysis unit, wherein: the data acquisition unit is connected with the temperature sensor, the thermistor type sensor and the wind speed sensor respectively to receive the temperature analog signal, the wind spe...

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Abstract

The invention discloses a measuring device for measuring time constant characteristics of a thermistor type sensor. The measuring device comprises a controllable heat source used for adjusting temperature in a pipeline and an adjustable fan used for adjusting a wind speed in the pipeline which are arranged on one end of the pipeline, the thermistor type sensor and a frame thereof which are arranged in the middle portion of the pipeline, and a temperature sensor, a wind speed sensor and a control module connected thereto which are arranged inside the pipeline, wherein the temperature sensor, the thermistor type sensor and the wind speed sensor are sequentially arranged in the axial direction of the pipeline and are arranged at different radial sections of the pipeline. The measuring devicecan measure the time constant of the thermistor type sensor conveniently, quickly and precisely.

Description

technical field [0001] The invention relates to a technology in the field of semiconductor characteristic detection, in particular to a measuring device for measuring the time constant characteristic of a thermistor type sensor. Background technique [0002] Thermistor sensors play an important role in industrial production and scientific research practice, and there are also high requirements for the measurement of their performance parameters. The time constant is a very important indicator, which belongs to the dynamic characteristics of the sensor. When the temperature suddenly changes, the time required for the temperature of the resistor body to change from the initial temperature to 63.2% of the final temperature. Today, as the industry is becoming more and more mature, the time constant and response speed of sensors are also required to be higher and higher. However, the device or equipment dedicated to measuring the dynamic characteristic parameters of this type of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/26
Inventor 杜正春朱梦瑞葛广言李慧敏邓铭杨建国
Owner SHANGHAI JIAOTONG UNIV