Long-distance infrared gas sensor

Abstract

The invention discloses a long-distance infrared gas sensor, which is used for detecting the type and concentration of gas and is characterized in that an absorption unit comprises a detection channel and a reference channel, detected gas is introduced into the detection channel, and the reference channel is kept closed. According to the long-distance infrared gas sensor disclosed by the invention, long-distance transmission of detection information is realized through a communication unit, a detection instruction is remotely sent for detection, long-distance remote detection is also realized through a flight unit, and the long-distance infrared gas sensor is suitable for a severe environment in which personnel cannot approach.

Description

technical field [0001] The invention belongs to the technical field of infrared gas sensors, and in particular relates to a long-distance infrared gas sensor. Background technique [0002] In modern society, with the continuous advancement of science and technology, more and more detection sensors have emerged, especially the most widely used gas sensors. Among them, conventional gas sensors are generally divided into electrochemical gas sensors, catalytic combustion combustible gas sensors sensor. [0003] (1) The disadvantages of electrochemical gas sensors are as follows: [0004] a) Electrochemical gas sensor, when the gas to be measured enters the sensor, the gas to be measured reacts chemically with the electrolyte inside the electrochemical sensor, and the electrolyte generates a positive current due to ionization and decomposition, which is detected by external sampling The current is sampled, and the corresponding relationship between a voltage signal and the inte...

AI Technical Summary

Problems solved by technology

[0016] 1. The current infrared gas sensor has a relatively narrow detection range, is limited by many detection environments, and does not have real-time communication functions. It cannot realize remote control in terms of communication and distance.

[0017] 2. The current infrared gas sensor simply compares the attenuation of the same infrared light before and after emission, but the infrared laser may be attenuated by the absorption of the detected gas during transmission, so there will be a certain degree of detection accuracy error;

[0018] 3. The current infrared gas sensor lacks the structure of automatically introducing the detection gas, which makes the detection efficiency low;

[0019] 4. When the temperature of the current infrared gas sensor is low, the detection output signal is easily affected by the ambient temperature, that is, temperature drift, which will reduce the detection accuracy