BG2762U1 - Device for access to driving motor vehicle through ascertainment of identity and after non- invasive ascertainment of alcoholic strength in the organism - Google Patents

Abstract

The utility model relates to a device that identifies personality by biometric control in the structure of the finger veins) while at the same time non-invasively detecting the alcoholic content of the body. In case of positive identification and detected alcohol concentration below acceptable limits, the device gives access to driving the motor vehicle. The utility model aims to further protection of the vehicle from the encroachment and restricts from driving after usage of alcohol. It can be applied in public transport and in driving personal motor vehicles. There are concerned state and insurance organizations, considering the fact that in Europe about 25% of accidents are due to the use of alcohol. The advantage of the device according to the utility model is that it combines biometric identification of the person by a vein code with non-invasive detection of the alcohol concentration via reliable and reproducible photothermal radiometry. Thus the described device may be applied for installation in motor vehicles to prevent theft or for control after use of alcohol by connection to the immobilizing system. The device may be applied as stationary installation whereby allowing access to objects requiring identification and control of the use of alcohol for personnel. Alcohol detection is performed quickly, reliably and non-invasively.

Description

(54) A DEVICE FOR ACCESS TO DRIVING A VEHICLE THROUGH THE ESTABLISHMENT OF IDENTITY AND AFTER NON-INVASIVE ESTABLISHMENT OF AN ALCOHOLIC CONTENT this non-invasively establishes the alcohol content in the body. In case of positive identification and established concentration of alcohol below the permissible norms, the device gives access to driving. The utility model aims to further protect the vehicle from encroachment and to limit driving after drinking alcohol. It is used in public transport and in the management of personal motor vehicles

2762 UI vehicles. Government and insurance organizations are interested, given the fact that in Europe about 25% of accidents are due to alcohol use. The advantage of the device according to the utility model is that it combines biometric identification of the person by vein code with non-invasive determination of the concentration of alcohol by reliable and reproducible photo-thermal radiometry. The device thus described may be designed for installation in motor vehicles to prevent theft or control after use of alcohol by connection to the immobilization system. The device may have a stationary installation, which allows access to sites requiring identification and control of alcohol use by personnel. Alcohol detection is performed quickly, reliably and in a non-invasive way.

claims, 2 figures

2762 UI (54) DEVICE FOR ACCESS TO DRIVING BY DETECTION OF IDENTITY AND AFTER NON-INVASIVE DETECTION OF ALCOHOLIC CONTENT IN THE BODY

Field of technology

The utility model refers to a device that identifies the person through biometric control of the structure of the veins of the finger, while at the same time non-invasively detects the alcohol content in the body. In case of positive identification and established concentration of alcohol below the permissible norms, the device gives access to driving. The utility model aims to further protect the vehicle from encroachment and to limit driving after drinking alcohol. It is used in public transport and in driving personal motor vehicles. Government and insurance organizations are interested, given the fact that in Europe about 25% of accidents are due to alcohol use.

BACKGROUND OF THE INVENTION

Four main methods are known for non-invasive detection of alcohol content.

U.S. Pat. No. 8,515,506 B2 discloses the use of detecting alcohol content that has penetrated the skin by Raman spectroscopy with the finger touching the detector panel.

US 2009/0087920 A1 and US 2008/0061238 A1 disclose the use of a spectral method for measuring alcohol in the driver's breath. Spectroscopic methods, from US 2009/0087920 A1 and US 2008/0061238 A1, are strongly influenced by the presence of CO2 in the breath, the concentration of which varies for different people and during exercise.

JP 2009201661 (A) uses the detection of alcohol that has entered the sweat of the driver's hand by means of a sensor placed on the gear lever. The method disclosed in JP 2009201661 (A) cannot be used alone.

There are numerous patent documents disclosing devices implementing the method. This diversity is due to the shortcomings of the methods, which are overcome in different ways.

The method disclosed in U.S. Pat. No. 8,515,506 B2 is limited in sensitivity because the detection is made in an area where alcohol is poorly absorbed by radiation. Other absorption factors such as skin pigmentation and others also influence this area. This results in a long measurement time, which is not suitable for use in cars.

U.S. Pat. No. 8,849,835 proposes the use of photothermal radiometry for the non-invasive measurement of alcohol concentration in the body. The method does not have the disadvantages of the methods mentioned above. No other implementation of the method as a device is known other than that proposed in US Pat. No. 8,849,835.

Technical essence of the utility model

The subject of the utility model is a device that performs two functions simultaneously: reading the vein code and non-invasive determination of the alcohol content in the body by the method of photo-thermal radiometry.

The disadvantages known from the prior art are overcome by creating a device operating on the basis of photothermal radiometry. The device subject to the utility model performs an analysis of a larger area of the finger of a human hand to determine the vein code and by photothermal radiometry, the concentration of ethanol. This is necessary for efficient photothermal radiometry. Photothermal radiometry is impossible to perform with fingerprint technology.

The device, according to the utility model, is a veno-code reader, with the expansion of its functions and a module for realization of photothermal radiometry for non-invasive determination of the ethanol concentration is provided.

The functions of the device are clarified by Figure 1 and Figure 2.

The finger of the hand is placed between the diffusers 2 (figure 1). Then two functions are performed: 1) reading the structure of the veins and identification; 2) non-invasive detection of alcohol content in the body.

To perform the first function, the electronic unit 8 includes an IR LED source 4 and a CCD camera 6. The source 4 illuminates the finger diffusely through the diffusers, and the CCD camera 6 receives the image that is processed by the processor 10. The processor compares it with the base

2762 UI data stored in memory 11 and performs identification.

To perform the second function of the device, a laser source 7 is provided, emitting two beams - A and B at two wavelengths. Ray A has a wavelength coinciding with the spectral absorption of alcohol, and ray B - with its transmission. The laser emits successively rectangular pulses on both wavelengths of equal duration m. Both rays heat the fabric. In the presence of alcohol, ray A heats up more as it excites the electronic levels of the alcohol molecules, followed by non-radiative transitions that lead to the heating of the tissue.

Beam B heats up only due to the scattering of light in the fabric. The induced photothermal emission according to Phys.Rev.E 84, ₁₀ 041917 (2011) is:

In this formula 1 _{0 the} intensity of the rays - the period 0 <t <2 m _{p the} thermally registered te, and the meaning of the other notations can ^ 5 _RADIATION is Phys. Rev. E 84, 041917 (2011): see Phys. Rev. E 84, 041917 (2011). For

AQ _x (t) u (t) - Δ (? _Λ (ί - r _p ) u (t - τ _ρ ) + AQ _B (t - T _p ) u (t - tp) + AQ _B (t + t _p ) - AQ _B (t) '

Where u (t) is the Heaviside function.

It is necessary to keep in mind that the thermal response of the tissue continues even after the heating effect of the laser radiation. This leads to a modification of the above formula, which takes into account the shape of the laser pulses. The signal entering the input of phase detector 9 is separated from the noise, a Fourier transform is performed, which gives the frequency amplitude and phase of the signal. They calculate the time dependence of the amplitude and phase, which according to the previous formula carry information about the content of alcohol in the blood (Phys. Rev. E 84, 041917 (2011)). The non-invasive determination of alcohol content in the body is carried out by the rays A and B emitted from the source of laser radiation 7 are directed after reflection from the mirrors 1 (figure 2) to the diffusers 2, which diffusely direct the radiation to the finger. tissue heating. The thermal response of the tissue is detected by heat radiation receivers 5. The received signal is fed to the phase detector 9 and processed as described above. The result of the processing is fed through the electronic unit 8 to a processor 10, which compares the received signal with signals previously stored in the memory 11. The pre-recorded signals in the memory are the result of preliminary measurements at different concentrations of alcohol, through which the device is calibrated.

After establishing identification and when the measured alcohol content in the body is below the permissible maximum, the processor sends a signal to the access device 12. The access can be to drive a car or to perform certain duties.

2762 UI

Figure 1 and Figure 2 show a diagram of the device according to the utility model, which includes:

1. Mirror

2. Diffuser

3. Housing

4. IR LED source

5. Heat radiation receivers

6. CCD camera

7. Source of laser radiation

8. Electronic unit

9. Phase detector

10. Processor

11. Memory

12. Access device

The utility model device is disclosed by the following embodiment.

In the housing 3 are mounted an IR LED source 4 and a CCD camera 6, which provide reading of the vein code from the image supplied by the camera to the electronic unit 8 and at the same time in the housing 3 are placed a laser radiation source 7 that emits two beams. directed to mirrors 1, which deflect the beams to diffusers 2, whereby the laser radiation heats the tissue of the finger in operating mode, and the heat radiation receivers 5 detect the radiation emitted by the tissue. The signal from the receivers is routed to a phase detector 9, where the corresponding values are measured, then fed to software executed by the processor 9 through the electronic unit 8, determining the alcohol concentration after comparison with the calibration database stored in memory 11.

The advantage of the device according to the invention is that it combines biometric identification of the person by vein code with non-invasive determination of the concentration of alcohol by reliable and reproducible photothermal radiometry. The device thus described may be designed for installation in motor vehicles to prevent theft or control after use of alcohol by connection to the immobilization system. The device may have a stationary installation, which allows access to sites requiring identification and control of alcohol use by personnel. Alcohol detection is performed quickly, reliably and in a non-invasive way.

Claims (2)

Device for simultaneously providing biometric control through the structure of the veins of a driver's finger and non-invasive detection of alcohol content by photothermal radiometry, characterized in that IR LED sources are mounted in a housing box (3) with a pass-through top wall ( 4) on one side wall and a chamber (6) mounted in the lower wall, the chamber (6) being connected by an electronic unit (8) to a processor (10) for reading a vein code from an image and identification, as on the lower wall on the housing (3) is placed a source of laser radiation (7) directed to the mirrors (1) mounted on the wall opposite to that on which the IR LED sources (4) are mounted to deflect the beams to the diffusers (2), located at the top of the front and rear wall, wherein heat radiation receivers (5) for detecting radiated tissue radiation are provided on the front and rear walls and are connected to the electronic unit (8) controlling the IR LED sources (4). , eastern laser radiation (7), a phase detector (9), a processor (10) for determining the ethanol concentration, the processor (10) being connected to a device for providing access (12) to a motor vehicle or objects. Device according to claim 1, characterized in that the laser radiation source (7) generates two beams, one coinciding with the spectral absorption of ethanol and the other coinciding with the spectral transmission of ethanol.