Adjustable long-light-path infrared gas sensor and detection method
A gas sensor and infrared detector technology, applied in the field of adjustable long optical path infrared gas sensor and detection, can solve the problems of inability to achieve long optical path, large loss of light intensity, low resolution, etc., to reduce loss of light intensity , Improve the utilization rate, improve the effect of detection accuracy
Inactive Publication Date: 2019-06-14
翼捷安全设备(昆山)有限公司
View PDF5 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The optical path of traditional infrared gas sensors is generally cylindrical tube type. The infrared light emitted from the infrared light source is reflected by the tube wall for many times and reaches the detector. With the growth of the cylindrical tube, the number of light reflections increases. The intensity will be lost, and the light intensity will be lost after multiple reflections, so the optical path of traditional infrared gas sensors is generally around 50mm~100mm, which cannot achieve a long optical path, and the resolution is low
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
[0025] see Figure 1-3 , this embodiment shows an infrared gas sensor with an adjustable length optical path, including: a light source module 100, an adjustable optical path connector 200, and a detection module 300 that are connected and used in conjunction with each other;
[0026] The light source module 100 includes a light source reflection cavity 1 and an infrared light source 4 arranged in the light source reflection cavity 1;
[0027] The detection module 300 includes a detector light-gathering reflection cavity 3 and an infrared detector 5 arranged in the detector light-gathering reflection cavity 3 .
[0028] A light source modulation circuit board 6 used in conjunction with the infrared light source 4 is arranged in the light source reflection cavity 1 .
[0029] A detector signal processing circuit board 7 used in conjunction with the infrared detector 5 is arranged in the light-gathering reflective cavity 3 of the detector.
[0030] The focal point or center of...
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 invention relates to an adjustable long-light-path infrared gas sensor and a detection method. The detection method carries out gas detection on the basis of the adjustable long-light-path infrared gas sensor according to claim 6, and comprises the following steps that: 1, an infrared light source emits infrared light on a certain wave band under the drive of a light source modulation circuit;2, after being irradiated to a reflection surface of a light source reflection cavity, the infrared light is converted into parallel light, and after being propagated by a certain distance, the parallel light is irradiated to a condensation reflection surface of a condensation reflection cavity of a detector; and 3, the reflection surface condenses the parallel light to the infrared detector, theinfrared detector generates a voltage signal after receiving the infrared light, and the voltage signal is processed by a detector signal processing circuit board to be converted into corresponding gas concentration.
Description
technical field [0001] The invention relates to detection equipment and a detection method thereof, specifically, an infrared gas sensor with an adjustable long optical path and a detection method thereof. Background technique [0002] The infrared gas sensor is a sensor used to detect the concentration of the target gas prepared by using the principle of non-dispersive infrared absorption (NDIR, Non-Dispersive Infrared). It has the advantages of high precision, good stability and long life. A general infrared gas sensor mainly includes an infrared light source for emitting infrared light, an optical cavity for reflecting infrared light, an infrared detector for receiving infrared light, and a corresponding control circuit. In the actual detection process, the infrared light intensity received by the infrared detector and the concentration of the gas, the length of the optical cavity, and the light intensity of the light source approximately satisfy the Lambert-Beer law: ,...
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): G01N21/3504G01N21/01G01J3/02G01J3/28
Inventor 许晴张杰汪锐于海洋
Owner 翼捷安全设备(昆山)有限公司