Temperature sensor and temperature detection method thereof

Abstract

The invention discloses a temperature sensor and a temperature detection method. The temperature sensor comprises a light source, a transparent sensor component, an illuminance detector and a processor. The transparent sensor component is located on a light output side of the light source, the illuminance detector is located at a set position in the light output direction of the transparent sensor component, and the processor is electrically connected with the illuminance detector. The refractive index of the transparent sensor component is changed along with the change of temperature; the light source is used for emitting light rays to the transparent sensor component; the transparent sensor component is used for changing the propagation direction of incident light rays in different extent under different temperature conditions, so that the luminous flux of the set position is changed; the illuminance detector is used for detecting the luminous flux of the set position; the processor is used for determining the current temperature according to the detected luminous flux and the predetermined corresponding relation of the luminous flux and the temperature. When temperature detection is conducted by means of the temperature sensor, the temperature detection sensitivity can be effectively improved.

Description

Technical field [0001] The invention relates to the technical field of sensitive elements, in particular to a temperature sensor and a temperature detection method thereof. Background technique [0002] Temperature is one of the seven basic quantities of the International System of Units. There are various sensors for measuring temperature. Temperature sensors are the core part of temperature measuring instruments and are very important. Temperature sensors are divided into contact temperature sensors and non-contact temperature sensors. The temperature measuring element of the contact temperature sensor must have good thermal contact with the measured object, and achieve thermal equilibrium through the principle of heat conduction and convection, so that the displayed value is the temperature of the measured object. The sensitive element of the non-contact temperature sensor is not in contact with the measured object. It can be used to measure the surface temperature of moving ...

AI Technical Summary

Problems solved by technology

[0003] However, in many application scenarios that have strict requirements on temperature, the temperature sensors used at this stage cannot meet the high requirements of temperature sensitivity.

For example, the items arrayed in the display windows of museums are relatively precious and have high requirements for temperature and temperature. In order to allow the public to visit, the windows need to be illuminated for a long time. Can easily cause irreversible heat and light damage to precious items

However, even if a temperature sensor is installed in the window, the process of manually adjusting the detected temperature change is very complicated, and the temperature sensitivity of the temperature sensor usually cannot meet the requirements.

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