CN107782747A - A kind of microwave resonator blood alcohol concentration measuring method - Google Patents
A kind of microwave resonator blood alcohol concentration measuring method Download PDFInfo
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- CN107782747A CN107782747A CN201711139821.3A CN201711139821A CN107782747A CN 107782747 A CN107782747 A CN 107782747A CN 201711139821 A CN201711139821 A CN 201711139821A CN 107782747 A CN107782747 A CN 107782747A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
Abstract
The present invention relates to a kind of microwave resonator blood alcohol concentration measuring method, including：The alcohol screen test solution of various concentrations is prepared, builds resonator measuring system；Measuring system and Network Analyzer are connected, and makees single port calibration；Resonant frequency when measuring cavity, Network Analyzer swept frequency range is adjusted according to this frequency, and sampling number is set according to swept frequency range；The solution of various concentrations is detected, obtains corresponding frequency-domain waveform；Frequency-domain waveform is analyzed, obtains resonant frequency；Different known alcohol strength solutions is repeated the above steps, finds resonant frequency linear relationship corresponding with alcohol concentration；Blood sugar concentration sample to be measured is repeated the above steps, obtains resonant frequency；The resonant frequency of acquisition detects blood alcohol concentration according to linear relationship.
Description
Technical field
The invention belongs to microwave technical field, is related to a kind of blood alcohol concentration measuring method.
Background technology
Drunk driving accident is traffic accident occurred frequently at present, and serious threat the health and property safety of people.Alcohol can shadow
The nervous centralis of people is rung, reduces reaction speed of the people to the thing that happens suddenly, and then produce traffic accident.Drunk driving accident is even more one
As many as 16 times of traffic accident.Issued according to national quality supervision and inspection Quarantine Bureau《Vehicle drive human blood, expiration alcohol
Content threshold value is with examining》Regulation：The blood alcohol content (BAC) of people is less than 20mg/dl and travelled for non-drunk driving, more than 20mg/dl
And it is drunk driving more than 80mg/dl less than 80mg/dl to travel after drinking.
The scene of the accident is measured indirectly using alcohol content of exhalation gas concentration (BrAC), factor (temperature of the method by the external world
Degree, ethnic group, atmospheric gas etc.) have a great influence.It is dead to human pilot, refuse and deny the situation of expiration formula detection, extract quiet
Arteries and veins blood measuring BAC.Method of testing common at present is that headspace gas chromatography instrument measures BAC, but the position of traffic accident and hospital
Put it is uncertain, and detection time length do not possess ageing, instrument expensive price, volume is big.
Application for a patent for invention 201710741964.5, a kind of microwave cavity solution measuring system is given, using circle
Microwave cavity, a kind of measuring system that the present invention is provided based on this patent application, there is provided blood alcohol concentration measuring method.
Citation：
[1]Xiao X,Li Q.“A Noninvasive Measurement of Blood Glucose
Concentration by UWB Microwave Spectrum,”IEEE Antennas and Wireless
Propagation Letters,no.16:pp.1040-1043,Oct 2017.
[2]S.Kim,H.Melikyan,J.Kim,A.Babajanyan,J.H.Lee,L.Enkhtur,B.Friedman
and K.Lee,“Noninvasive in virto measurement of pig-blood D-glucose by using a
microwave cavity sensor,”Diabetes Res.Clinical Pract.,pp.379-384,Jan.2012.
[3]R.Dobson,R.Wu and P.Callaghan,“Blood glucose monitoring using
microwave cavity perturbation,”Electronics Letters.,vol.48,no.15,pp.1-2,May
2012.
The content of the invention
The present invention provides a kind of microwave resonator blood alcohol concentration measuring method.The change of blood alcohol concentration is by resonance
The offset of frequency is immediately arrived at, and establishes concentration and the relation of frequency shift (FS), and blood wine can be directly obtained by frequency information
The size of smart concentration.Technical scheme is as follows
A kind of microwave resonator blood alcohol concentration measuring method, comprises the following steps：
(1) the alcohol screen test solution of various concentrations is prepared, builds resonator measuring system；
(2) measuring system and Network Analyzer are connected, and makees single port calibration；
(3) resonant frequency when measuring cavity, Network Analyzer swept frequency range is adjusted according to this frequency, set according to swept frequency range
Put sampling number；
(4) solution of various concentrations is detected, obtains corresponding frequency-domain waveform；
(5) frequency-domain waveform is analyzed, obtains resonant frequency；
(6) (4) (5) step is repeated to different known alcohol strength solutions, it is corresponding with alcohol concentration finds resonant frequency
Linear relationship；
(7) (4) (5) step is repeated to blood sugar concentration sample to be measured, obtains resonant frequency；
(8) resonant frequency obtained detects blood alcohol concentration according to the linear relationship of step (6).
Such a method precision is very high, can reach mg/dl, the small change of blood alcohol, can also intuitively show
Come.
Brief description of the drawings
Fig. 1 harmonic wave figures
Fig. 2 emulates data and fitted figure
Embodiment
The alcohol sample for preparing 0~100mg/dl interval 20mg/dl carries out experiment measurement.Measure cavity resonance frequency to
The swept frequency range of Network Analyzer is set, and sampling number is set.Respectively in resonator solution conduit place 0,20,40,60,
80th, 100mg/dl sample, the resonant frequency of various concentrations sample is obtained using Network Analyzer.Above-mentioned experiment is repeated several times
Measurement, data are carried out to concentration and resonant frequency and are fitted to obtain linearly related function.The function obtained according to many experiments, can be with
Predict and instruct blood alcohol to detect, theoretical and experimental basis is provided for it.
Microwave resonator is emulated using electromagnetic simulation software HFSS, one group of parameter corresponding to setting to simulate 0,
20th, 40,60,80,100mg/dl alcohol sample, Fig. 1 is harmonic wave figure.As shown in figure 1, when alcohol concentration increases from 0mg/dl
When being added to 100mg/dl, the resonant frequency of resonator increases toward moving to right.
Resonant frequency during various concentrations is obtained using MATLAB analyze datas, Fig. 2 is that resonant frequency and data are fitted
Curve.As shown in Fig. 2 when concentration is linearly increasing, resonant frequency increases to 7.6441GHz from 7.6429.Data fitting result
Linear relationship is presented with resonance frequency shifts in display, concentration.Repeatedly measuring and being fitted can obtain reliably linearly
Relation, testing sample can use this calculating and prediction.
Claims (1)
1. a kind of microwave resonator blood alcohol concentration measuring method, comprises the following steps：
(1) the alcohol screen test solution of various concentrations is prepared, builds resonator measuring system；
(2) measuring system and Network Analyzer are connected, and makees single port calibration；
(3) resonant frequency when measuring cavity, Network Analyzer swept frequency range is adjusted according to this frequency, is set and adopted according to swept frequency range
Number of samples；
(4) solution of various concentrations is detected, obtains corresponding frequency-domain waveform；
(5) frequency-domain waveform is analyzed, obtains resonant frequency；
(6) (4) (5) step is repeated to different known alcohol strength solutions, finds resonant frequency line corresponding with alcohol concentration
Sexual intercourse；
(7) (4) (5) step is repeated to blood sugar concentration sample to be measured, obtains resonant frequency；
(8) resonant frequency obtained detects blood alcohol concentration according to the linear relationship of step (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711139821.3A CN107782747A (en) | 2017-11-16 | 2017-11-16 | A kind of microwave resonator blood alcohol concentration measuring method |
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| CN201711139821.3A CN107782747A (en) | 2017-11-16 | 2017-11-16 | A kind of microwave resonator blood alcohol concentration measuring method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211940A (en) * | 2018-08-31 | 2019-01-15 | 天津大学 | A kind of microwave resonant cavity sensor water pollutant measurement method |
| CN109239104A (en) * | 2018-08-31 | 2019-01-18 | 天津大学 | Dielectric constant measurement method based on broadband microwave resonant cavity sensor |
| CN113433141A (en) * | 2021-06-25 | 2021-09-24 | 电子科技大学 | Alcohol content detection device and method based on microwave thermoacoustic technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405569A (en) * | 2001-08-08 | 2003-03-26 | 电子科技大学 | Testing method for complex dielectric permittivity of multi-mould in one chamber, wide-frequency and multi-point microwave medium |
| CN1981190A (en) * | 2003-10-24 | 2007-06-13 | 特罗克斯勒电子实验有限公司 | Pavement material microwave density measurement methods and apparatuses |
| CN105067654A (en) * | 2015-09-11 | 2015-11-18 | 天津大学 | Single-mode resonant cavity sensor-based solution concentration measurement method |
| CN106662539A (en) * | 2014-07-25 | 2017-05-10 | 勃艮第大学 | Sensor and device for detecting an analyte in a liquid |
-
2017
- 2017-11-16 CN CN201711139821.3A patent/CN107782747A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405569A (en) * | 2001-08-08 | 2003-03-26 | 电子科技大学 | Testing method for complex dielectric permittivity of multi-mould in one chamber, wide-frequency and multi-point microwave medium |
| CN1981190A (en) * | 2003-10-24 | 2007-06-13 | 特罗克斯勒电子实验有限公司 | Pavement material microwave density measurement methods and apparatuses |
| CN106662539A (en) * | 2014-07-25 | 2017-05-10 | 勃艮第大学 | Sensor and device for detecting an analyte in a liquid |
| CN105067654A (en) * | 2015-09-11 | 2015-11-18 | 天津大学 | Single-mode resonant cavity sensor-based solution concentration measurement method |
Non-Patent Citations (1)
| Title |
|---|
| HAO FU 等: "Study on a Glucose Concentration Measurment System Based on Microwave Perturbation Technique", 《JOURNAL OF MICROWAVE POWER AND ELECTROMAGNETIC ENERGY》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211940A (en) * | 2018-08-31 | 2019-01-15 | 天津大学 | A kind of microwave resonant cavity sensor water pollutant measurement method |
| CN109239104A (en) * | 2018-08-31 | 2019-01-18 | 天津大学 | Dielectric constant measurement method based on broadband microwave resonant cavity sensor |
| CN113433141A (en) * | 2021-06-25 | 2021-09-24 | 电子科技大学 | Alcohol content detection device and method based on microwave thermoacoustic technology |
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Application publication date: 20180309 |