A temperature chain sensor based on negative temperature coefficient thermistor

Abstract

The invention provides a temperature chain sensor based on negative temperature coefficient thermistors; the temperature chain sensor comprises wires, filling material, a plurality of negative temperature coefficient thermistors and a hollow tube carrier; the plurality of negative temperature coefficient thermistors are fixed on the hollow tube carrier at certain intervals in sequence, thus forming the core member of the temperature chain sensor, wherein the hollow tube carrier is made of polycarbonate material; each fixed negative temperature coefficient thermistor is respectively connected to the outer side of the hollow tube carrier through the wire, and connected with an outer circuit in a half-bridge form, thus measuring the temperature of a measured object; a silica gel adhesive is filled in the internal gap of the hollow tube carrier. The temperature chain sensor is mainly applied to cold conditions in sea ice, polar areas, high plateaus and low temperature laboratories, and can measure the temperature gradient distribution in the ice body; the temperature chain sensor can provide very substantial resistance changes, and a disengaging signal amplifier is not needed; the temperature chain sensor is low in cost, and can be applied in large scale.

Description

technical field [0001] The invention provides a temperature chain sensor based on a negative temperature coefficient thermistor. The temperature chain sensor is mainly used in cold environments such as sea ice, polar regions, plateaus, and low-temperature laboratories, and is developed for the above-mentioned high-humidity and low-temperature environments. It can be used in other similar environments within the scope and achieve ideal results. Background technique [0002] Thermistors have broad application prospects in thermodynamic related measurements, such as temperature measurements of sea ice, frozen soil and other materials. The basic principle is that the resistance value of the resistor has a certain relationship with the temperature, and the temperature is calculated back by directly measuring the resistance during use, so as to realize the numerical measurement of the temperature. At present, international sensor manufacturers cannot provide sensors for measuring...

AI Technical Summary

Problems solved by technology

Resistance thermometers can provide high precision in this field, but most of them use silver as the raw material, which is expensive and the material itself is brittle and prone to damage, which is not suitable for large-scale use. At the same time, its resistance is less sensitive to temperature, and it requires The resistance bridge is used, so the volume of a single probe is large

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