Method and system for noninvasively detecting blood alcohol content based on Raman scattering

A Raman scattering and detection method technology, applied in the field of blood alcohol content detection, can solve problems such as poor accuracy, distorted detection results, and wrong judgment, and achieve the effects of simple and convenient testing, easy implementation, and high reliability

Inactive Publication Date: 2015-05-06
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

And this proportional coefficient is affected by the individual physiological structure, race, environment and exhalation skills of the detected object, and it changes greatly.
Therefore, when targeting the individual detected object, the error is large and the accuracy is poor, and the detection data can only be used as a reference and cannot be used as strong judicial evidence
When the detected object has alcohol residue in the mouth, the measurement result will be high, and when the

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  • Method and system for noninvasively detecting blood alcohol content based on Raman scattering
  • Method and system for noninvasively detecting blood alcohol content based on Raman scattering
  • Method and system for noninvasively detecting blood alcohol content based on Raman scattering

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[0035] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0036] Such as Figure 1-Figure 2 As shown, this embodiment provides a non-invasive blood alcohol content detection system based on Raman scattering, which includes a laser emitting module, a signal receiving module, a signal processing module 5, and a digital display module 6 connected in sequence. Among them, the laser emitting module includes a light source 1, a condenser lens L, a plane mirror M, and an optical probe 3 arranged in sequence, and the optical probe 3 simultaneously has the functions of emitting the light source and receiving scattered light. The signal receiving module includes a filter 2, a calibration lens 10 and a Raman spectrometer 4 arranged in sequence, and the Raman spectrometer 4 is connected to the calibration lens 10 through an optical fiber 11. The signal processing module 5 and the digital display module 6 are integrated in a com...

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Abstract

The invention relates to a method and a system for noninvasively detecting a blood alcohol content based on Raman scattering. The method comprises the following steps: acquiring Raman scattering spectrum information of one group of alcohol solution blood samples with known concentration by adopting a transmission and reflection manner, establishing a quantitative mathematic relation between a blood alcohol concentration and the Raman peak strength of a Raman scattering spectrum to form a calibrating model; training the calibrating model and obtaining an optimal calibrating model; acquiring Raman scattering spectrum information of to-be-detected blood of a human body by adopting a transmission and reflection manner, and establishing a to-be-tested sample set; and denoising the obtained to-be-tested sample set by using a wavelet analysis method; and obtaining an alcohol concentration predicted value of detecting the blood of the human body by using the to-be-tested sample set as the input of the optical calibrating model. The system comprises a laser emitting module, a signal receiving module, a signal processing module and a digital display module which are sequentially connected. Compared with the prior art, the method has the advantages of rapidness, real time, noninvasive effect and the like.

Description

Technical field [0001] The invention relates to the technical field of blood alcohol content detection, in particular to a method and system for non-invasive blood alcohol content detection based on Raman scattering. Background technique [0002] With the rapid development of my country's economy, the rapid improvement of people's living standards, the rapid spread of private cars, and frequent traffic accidents caused by drunk driving. Therefore, from a safety point of view, the traffic police department promptly detects the alcohol concentration in car drivers and prohibits drunk driving as an effective means to reduce and prevent traffic accidents caused by drunk driving. At present, there are two commonly used methods to detect human blood alcohol concentration: blood test method and breath test method. [0003] The blood test method is the most direct and accurate method because it directly detects the blood samples taken, and the test results are not affected by other factor...

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Application Information

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IPC IPC(8): G01N21/65
Inventor 汤乃云崔明仁
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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