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Device and method for detecting temperature characteristics of temperature sensor

A temperature sensor and temperature characteristic technology, which is used in measurement devices, thermometer testing/calibration, thermometers, etc., can solve the problems of unstable data, large error in detection data, short circuit of temperature sensor leads, etc., to improve data detection accuracy and improve detection. Efficiency, the effect of simple detection method

Inactive Publication Date: 2011-11-16
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defect of such detection method is: (1) it is difficult to ensure that the heating container is at a constant temperature at the required detection point, causing the data displayed by the detection instrument to be detected to be unstable; (2) if the temperature sensor to be tested immersed in the heating container is not well insulated It is easy to cause a short circuit between the leads of the temperature sensor to be tested, resulting in a large error in the detection data
[0004] After retrieving existing documents at home and abroad, no existing documents closest to the present invention have been found

Method used

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  • Device and method for detecting temperature characteristics of temperature sensor
  • Device and method for detecting temperature characteristics of temperature sensor
  • Device and method for detecting temperature characteristics of temperature sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Thermistor PTC type (WMZ11), thermistor NTC type (MF11), thermistor CTR type (RW) sensor temperature characteristic detection device

[0032] Thermistors are roughly divided into three types: (1) PTC type positive temperature coefficient thermistor; (2) NTC type negative temperature coefficient thermistor; (3) CTR type critical temperature coefficient thermistor. The temperature characteristics of the three types of thermistor sensors are different from each other, and their uses are different. Therefore, the research on the above three types of thermistor sensors is of great significance.

[0033] exist figure 1 Among them, the detection device of thermistor PTC type (WMZ11), thermistor NTC type (MF11), and thermistor CTR type (RW) sensor temperature characteristics includes a digital ohmmeter I with a range of 0-20KΩ and a range of 0- 20KΩ digital ohmmeter II, digital ohmmeter III with a range of 0-200KΩ, and heating furnace IV with a power of 20W; the temperature se...

Embodiment 2

[0051] Detection device for temperature characteristics of copper resistance sensor (Cu50), platinum resistance sensor (Pt100), pn junction sensor (2AK05)

[0052] Copper resistance sensor (Cu50), platinum resistance sensor (Pt100) within a certain temperature range, the relationship between resistance and temperature change is approximately linear, with a positive temperature coefficient, high temperature measurement accuracy; pn junction sensor (2AK05) at a certain temperature The relationship between the resistance value and the temperature change in the range is also approximately linear, with a negative temperature coefficient. The characteristic of the sensor is that it is very sensitive to temperature changes. Copper resistance sensors, platinum resistance sensors, and pn junction sensors are widely used in scientific research and production.

[0053] exist figure 1 Among them, the detection devices for temperature characteristics of copper resistance sensor (Cu50), plat...

Embodiment 3

[0064] Detection device for temperature characteristics of wire thermal resistance (WZG), thermocouple (MS3400), thermistor NTC type (MF14) sensors

[0065] The resistivity of wire thermal resistance and thermocouple sensor also changes with the change of temperature. The main advantages are simple production and convenient use, but the sensitivity is not as good as that of thermistor.

[0066] exist figure 1 Among them, the detection device for the temperature characteristics of the wire thermal resistance (WZG), thermocouple (MS3400), and thermistor NTC type (MF14) sensor includes a digital ohmmeter I with a range of 0-200Ω and a digital ohmmeter with a range of 0-200Ω. Ohmmeter II, digital ohmmeter III with a range of 0-20KΩ, heating furnace IV with a power of 30W; figure 1 Among them, the temperature sensor A, temperature sensor B, and temperature sensor C to be tested are wire thermal resistors (WZG) made of copper enameled wire materials, thermocouples made of copper-co...

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Abstract

The invention relates to a device and a method for detecting temperature characteristics of a temperature sensor. The device comprises an ohmmeter I, an ohmmeter II, an ohmmeter III, a heating furnace IV, a temperature controller V, a power supply circuit, a temperature sensor A to be measured, a temperature sensor B to be measured, a temperature sensor C to be measured, a sensor for controlling the temperature of the furnace, connectors XP1 / XS1-XP4 / XS4 and a panel. The detection method comprises the following steps of: turning on a power source of the device; presetting the furnace temperature and selecting temperature-raising output voltage; respectively measuring the changes of the temperature sensor A, the temperature sensor B and the temperature sensor C which correspond to the furnace temperature from a low temperature period to a high temperature period, recording a plurality groups of relevant data for the corresponding change of resistance in a table; and thereby analyzing the temperature characteristics of the temperature sensor. The method is simple, direct and directviewing, improves the detection precision and the detection efficiency of data, can save energy and reduce emission, not only can be used for researching the temperature characteristics of the temperature sensor, but also can be used for electricity experiment teaching.

Description

technical field [0001] The invention relates to a detection device and a detection method for the temperature characteristic of a sensor, in particular to a detection device and a detection method for the temperature characteristic of a temperature sensor. Background technique [0002] Sensor technology is one of the three pillars of information technology and plays an important role in various fields. Among sensors, temperature sensors are widely used in automatic detection and control systems. There are many kinds of temperature sensors, including thermistor sensors, platinum resistance sensors, pn junction sensors and wire thermal resistance sensors, etc. Therefore, a comprehensive understanding and research on the temperature characteristics of temperature sensors is very important for studying sensor technology and learning sensor technology well. meaning. [0003] The understanding and research on temperature sensor technology mainly involves the detection of the temp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K15/00
Inventor 戴心锐马玉利
Owner CHONGQING UNIV
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