Laser detection system for oxygen concentration in tail gas of vehicle-mounted type motor vehicle
A technology of laser detection and oxygen concentration, which is applied in the field of laser spectrum detection of gas concentration, can solve the problems of rapid changes in oxygen concentration, laser beam misalignment, and frequency, etc., and achieve the effect of improving laser alignment misalignment and increasing reflection paths
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0040] see figure 1 , the laser system of the present invention includes a diffuse reflection optical absorption cell 1 and a tunable semiconductor laser absorption spectrum detection device 2 .
[0041]see figure 1 , the tunable semiconductor laser absorption spectrum detection device 2 is composed of a semiconductor laser 3, a controller 4 that drives the temperature and current of the semiconductor laser 3, a signal generator 5 that generates a modulation signal and a frequency multiplied signal, a photodetector 6, and a photodetector signal The preamplifier circuit 7 for filter amplification, the lock-in amplifier 8 for extracting the second harmonic signal, the direct current signal output to the preamplifier circuit 7, the second harmonic signal output by the lock-in amplifier 8, and the temperature output by the temperature sensor 9 It is composed of DSP microprocessor 10 for signal processing.
[0042] see figure 2 with image 3 , the absorption pool 11 of the dif...
PUM
Property | Measurement | Unit |
---|---|---|
surface roughness | aaaaa | aaaaa |
surface roughness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com