Photoelectric sensor and infrared thermometer

Abstract

The invention relates to a photoelectric sensor and an infrared thermometer. Multiple visible light sources are symmetrically arranged by taking an infrared light sensing chip as the center. The light sensing face of the infrared light sensing chip and the light emitting faces of the variable light sources share one plane. The photoelectric sensor cooperates with a focusing lens and a detection circuit to form the infrared thermometer. Thus, it is achieved that, when non-contact long-distance temperature measurement is performed on a to-be-measured object, and when light spots of the visible light sources are focused on the surface of the to-be-measured object, according to the reversibility of the light, infrared light irradiated out, at the central positions of the light spots, where the surface of the to-be-measured object is arranged is rightly transmitted to the light sensing face of the infrared light sensing chip. The infrared light sensing chip converts light signals into electric signals, and the electric signals are converted into temperature signals to be output through a detection circuit electrically connected with the photoelectric sensor. Thus, the non-contact long-distance temperature measurement of the to-be-measure object is achieved; the position of temperature measurement points is precise; and temperature measurement of tiny targets within the range being less than 0.1mm can be achieved.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a photoelectric sensor and an infrared thermometer. Background technique [0002] Temperature is a physical quantity, which indicates the degree of coldness and heat of an object. It is a common parameter value in thermal technology; the production process of many industries requires strict monitoring and control of temperature. The quality of temperature control is directly related to product quality and performance. With the development of science and technology and the various needs of human beings, the traditional contact temperature measurement method can no longer meet the temperature measurement needs of some special fields in modern times, and the demand for non-contact and long-distance temperature measurement technology is increasing. However, the existing temperature sensors cannot meet the problems of non-contact temperature measurement, subtle targets, and high / low ...

AI Technical Summary

Problems solved by technology

With the development of science and technology and the various needs of human beings, the traditional contact temperature measurement method can no longer meet the temperature measurement needs of some special fields in modern times, and the demand for non-contact and long-distance temperature measurement technology is increasing

However, the existing temperature sensors cannot meet the problems of non-contact temperature measurement, subtle targets, and high / low temperature.

Images