Variable light program gas sensor
A gas sensor and optical program technology, applied in instruments, scientific instruments, material analysis by optical means, etc., can solve the problems of inaccurate gas concentration value and increased cost, and achieve the effect of improving measurement accuracy and reducing cost.
Pending Publication Date: 2019-12-31
CHENGDU QIANJIA TECH CO LTD
View PDF6 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in fact, the ambient temperature will have an impact on the emission spectrum of the light source, so that I and I 0 The ratio of the gas concentration changes, resulting in inaccurate measured gas concentration values
In addition, two sets of photodetectors need to be arranged for two channels, resulting in increased cost
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and illustrated in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.
[0016] Se...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention relates to a variable light program gas sensor. The variable light program gas sensor comprises a control module and an air chamber; a light source module, a photodetector, and astepping device are arranged in the air chamber; light emitted by a light source is received by the photodetector; and the stepping device is configured to drive the photodetector to change the optical path. According to the variable light program gas sensor provided by the present invention, the stepping device is used to drive the photodetector to change the optical path, the concentration of the to-be-measured gas is measured based on the optical path change, and the optical path change cannot affected by the ambient temperature, thus the measurement accuracy can be improved; and only onechannel is needed to implement measurement, thus the cost can be reduced.
Description
Technical field [0001] The invention relates to the technical field of gas sensors, in particular to a variable light program gas sensor. Background technique [0002] A gas sensor is a device that converts information such as the composition and concentration of a gas into information that can be used by personnel, instruments, and computers. The gas sensor uses Lambert Beer's law: I=I 0 exp(-KCL), where I is the emitted light intensity, I 0 Is the incident light intensity, K is the infrared light absorption coefficient of the medium, C is the concentration of the gas to be measured, and L is the optical path of the infrared light passing through the medium. The traditional gas sensor is a dual-channel structure with a fixed gas chamber (that is, the optical path is unchanged). One is the measurement channel and the other is the reference channel. I and I are obtained from the data of the reference channel. 0 The ratio of, then the concentration of the gas to be measured in the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504G01N21/03
CPCG01N21/3504G01N21/0303
Inventor 牛富增赵勇张彬
Owner CHENGDU QIANJIA TECH CO LTD