WO2012099365A2 - Breath alcohol analyzer - Google Patents

Breath alcohol analyzer Download PDF

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Publication number
WO2012099365A2
WO2012099365A2 PCT/KR2012/000359 KR2012000359W WO2012099365A2 WO 2012099365 A2 WO2012099365 A2 WO 2012099365A2 KR 2012000359 W KR2012000359 W KR 2012000359W WO 2012099365 A2 WO2012099365 A2 WO 2012099365A2
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WO
WIPO (PCT)
Prior art keywords
sample gas
heating element
breathalyzer
gas passage
insulator substrate
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PCT/KR2012/000359
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French (fr)
Korean (ko)
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WO2012099365A3 (en
Inventor
유도준
Original Assignee
(주)센텍코리아
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Publication of WO2012099365A2 publication Critical patent/WO2012099365A2/en
Publication of WO2012099365A3 publication Critical patent/WO2012099365A3/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/98—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving alcohol, e.g. ethanol in breath
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/497—Physical analysis of biological material of gaseous biological material, e.g. breath
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/497—Physical analysis of biological material of gaseous biological material, e.g. breath
    • G01N33/4972—Determining alcohol content
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N2001/2244—Exhaled gas, e.g. alcohol detecting

Definitions

  • the present invention relates to a breathalyzer, and more particularly, to a breathalyzer that can accurately measure the blood alcohol concentration of the subject by preventing the condensation of water in the sample gas collecting unit.
  • Breathalyzer measures the concentration of alcohol that is expelled with exhalation by mixing with air of inhalation. Alcohol discharged with exhalation is proportional to the concentration of alcohol in the blood, so measuring the concentration of alcohol contained in the exhalation can calculate the blood alcohol concentration.
  • the breathalyzer includes a sample gas collecting unit, a sensing unit, a signal processing unit, and a display unit.
  • the sample gas collection part includes a bleeding band for exhaling the subject and a passage through which the sample gas flowing through the bleeding band flows.
  • the detection unit includes an alcohol sensor that detects an alcohol component in the sample gas collected through the sample gas collection unit and generates an electrical signal.
  • the signal processor functions to calculate blood alcohol concentration by analyzing the electrical signal from the alcohol sensor. The result calculated by the signal processor is displayed on the display.
  • Alcohol sensors of the sensing unit include a fuel cell type and a semiconductor type.
  • Fuel cell type has the disadvantage of short life and slow response time while high accuracy
  • semiconductor type has the disadvantage of relatively low accuracy instead of long life and fast response time.
  • Sample gas collection part of the configuration of the breathalyzer is one of the most important parts to ensure the accuracy of the breathalyzer with the alcohol sensor in the configuration of the breathalyzer. No matter how excellent the sensitivity of the alcohol sensor is, accuracy can be a problem if the exhalation of the subject is not accurately captured.
  • the sample gas collection unit should be able to confirm that the sample is being collected correctly by finding out that the subject is exhaling more than a certain intensity.
  • An object of the present invention is to provide a breathalyzer that solves the problem that alcohol is dissolved in water generated by condensation during winter breathing so that the concentration of alcohol is low.
  • Breathalyzer for achieving the above object, the inhalation breathing the subject to breathe, the sample gas inlet through which the sample gas is introduced, the sample gas flows into the sensing unit side
  • a sample gas collecting unit having a sample gas passage including a gas outlet; And a heater disposed in an inner space of the sample gas passage.
  • the heater since the heater is installed in the sample gas passage, the moisture in the sample gas is condensed in the sample gas collecting unit, thereby preventing dissolution of the alcohol in the sample gas, thereby enabling accurate measurement.
  • the sample gas can be heated with little energy.
  • the heater may include an insulator substrate disposed in an inner space of the sample gas passage, a heating element formed in the insulator substrate, and a plurality of stem pins electrically connected to the heating element and supporting the insulator substrate. .
  • the above-described insulator substrate may have electrode holes penetrating the insulator substrate and electrically connected to the heating element, and the stem pins may be electrically connected to the electrode holes to supply power to the heating element.
  • a plurality of perforations penetrating the insulator substrate are formed around the heating element of the insulator substrate. This is because heat generated in the heating element can be prevented from being conducted to the surroundings. This is because heat generated in the heating element may be conducted through the insulator substrate and then to the outside of the sample gas passage through the stem pin.
  • the heating element and the stem pin may be electrically connected by bonding with a wire.
  • the heating element may be formed by screen printing.
  • Breathalyzer by measuring the change in the electrical conductivity of the heating element, it can measure whether the sample gas inflow.
  • sample gas passage it is preferable that a plurality of sample gas outlets are formed so that a part of the sample gas introduced through the sample gas inlet is discharged to the outside, and the cross-sectional areas of the sample gas passage are the sample gas inlet and the sample gas outlet. It is preferable that it is wide compared with the area of.
  • the inflation is connected to the exhalation inlet in which the exhalation of the subject is introduced, the exhalation outlet for transferring a part of the exhaled inlet to the sample gas passage, and the exhalation for discharging a part of the exhaled to the outside It is preferred to include an outlet.
  • the cross-sectional area of the exhalation outlet is wider than the cross-sectional area of the exhalation outlet.
  • the drunk breaker according to the present invention is provided with a heater in the sample gas passage. Therefore, moisture in the sample gas can be condensed in the sample gas collecting unit, thereby preventing dissolution of the alcohol in the sample gas. This enables accurate measurement of the alcohol concentration in the sample gas. In addition, by providing a heater directly inside the sample gas passage, the sample gas can be heated with little energy.
  • FIG. 1 is a block diagram of a breathalyzer according to one embodiment of the present invention.
  • FIG. 2 is a perspective view of the sample gas passage shown in FIG. 1.
  • FIG. 3 is a cross-sectional view along the A-A direction of the sample gas passage shown in FIG.
  • FIG. 4 is a cross-sectional view taken along the B-B direction of the sample gas passage shown in FIG. 2.
  • FIG. 5 is a perspective view of a sample gas passage of a breathalyzer according to another embodiment of the present invention.
  • FIG. 6 is a cross-sectional view along the A-A direction of the sample gas passage shown in FIG.
  • FIG. 7 is a cross-sectional view taken along the B-B direction of the sample gas passage shown in FIG. 5.
  • FIG. 8 is a cross-sectional view showing yet another embodiment of the heater.
  • FIG. 9 is a perspective view of the injuries of the breathalyzer according to another embodiment of the present invention.
  • the breathalyzer 1 is a block diagram of a breathalyzer according to one embodiment of the present invention.
  • the breathalyzer 1 includes a sample gas collecting unit 10, a heater 20, and a sensing unit 30.
  • the sample gas collecting unit 10 collects an appropriate amount of sample gas from the exhalation discharged from the mouth or nose of the subject and delivers the sample gas to the sensing unit 30.
  • the sample gas collecting unit 10 passes through the sample gas passage 12 and the sample gas passage 12 through which the sample gas introduced through the candle holder 11, the breathing apparatus 11, exhales and exhales. And a sample gas storage unit 13 in which one sample gas stays and is discharged.
  • the candlestick 11 is in the form of a straw and is coupled to an upstream side of the sample gas passage 12.
  • the Buddha 11 is detachable and easy to clean after use.
  • FIG. 2 is a perspective view of the sample gas passage shown in FIG. 1
  • FIG. 3 is a cross-sectional view along the A-A direction of the sample gas passage shown in FIG.
  • the sample gas passage 12 is connected to the fire zone 11, the sample gas inlet 121 through which the sample gas is introduced, the sample gas outlet 122 connected to the sample gas storage 13, and A sample gas discharge port 123 is provided.
  • the sample gas outlet 123 is formed at the sample gas inlet 121 and immediately discharges a part of the sample gas introduced to the outside to prevent the temperature of the sample gas passage 12 from being lowered by a large amount of sample gas. It plays a role.
  • the diameters of the sample gas inlet 121 and the sample gas outlet 122 are smaller than the inner diameter of the sample gas passage 12. This is to prevent the sample gas passage 12 from lowering due to the excessive amount of sample gas flowing in at one time.
  • a heater 20 is installed in the sample gas passage 12 to heat the sample gas in the sample gas passage 12.
  • the heater 20 functions to prevent condensation of moisture contained in the sample gas.
  • FIG. 4 is a cross-sectional view taken along the B-B direction of the sample gas passage shown in FIG. 2. 3 and 4, the heater 20 is bonded to the insulator substrate 21, the heating element 22 formed on the insulator substrate 21, the electrode pad 23 of the heating element 22, and the wire 25. A plurality of stem pins 24.
  • the insulator substrate 21 is not particularly limited, but an alumina (Al 2 O 3 ) substrate is preferably used.
  • the thickness is mainly used is about 0.250mm, but is not limited thereto.
  • the heating element 22 is generally formed using platinum (Pt).
  • Platinum Pt
  • An example of the method of forming the heating element 22 on the insulator substrate 21 is as follows. Gold can be formed on the surface of the alumina substrate using a laser so that the heater can be cut in cell units. Next, the surface of the alumina substrate on which gold is formed is washed. Then, after the platinum paste is applied to the surface of the washed alumina substrate by screen printing, it is dried to form a pattern. The pattern is generally formed in a zigzag form to allow sufficient heat generation. Finally, heat treatment is carried out in a vacuum or reducing atmosphere to remove the binder in the platinum paste, and the platinum is sintered.
  • the stem pin 24 serves to support the insulator substrate 21 to float at a predetermined height inside the sample gas passage 12, and the electrode pads 23 of the heating element 22 formed on the insulator substrate 21 are provided. And by a conductive wire 25. In other words, the insulator substrate 21 floats inside the sample gas passage 12 by the wire 25 in contact with the stem pin 24.
  • the stem pin 24 is electrically coupled to the heating element 22 to serve to apply a current to the heating element 22.
  • the electrical conductivity of the heating element 22 can also be measured through the stem pin 24 coupled to the heating element 22. Since platinum is a kind of static thermistor whose resistance value increases in proportion to temperature, the temperature of the heating element 22 can be known by measuring the electrical conductivity of the heating element 22. Since the temperature of the heating element 22 changes according to the flow rate of the sample gas flowing into the sample gas passage 12, by measuring the electrical conductivity of the heating element 22, it is possible to confirm whether or not the sample gas is sufficiently introduced.
  • a sample gas storage unit 13 is disposed downstream of the sample gas passage 12.
  • the sample gas storage unit 13 communicates with the detection unit 30 to supply the sample gas to the detection unit 30. Sample gas remaining after being supplied to the sensing unit 30 is discharged to the outside.
  • the sensing unit 30 includes an alcohol sensor 31 and a suction pump 32 installed downstream of the alcohol sensor 31. As described above, since the detection unit 30 is in communication with the sample gas storage unit 13, when the suction pump 32 operates, the sample gas of the sample gas storage unit 13 is supplied to the detection unit 30.
  • the sample gas supplied to the sensing unit 30 changes the electrical characteristics of the alcohol sensor 31 of the sensing unit 30.
  • the alcohol sensor 31 uses a semiconductor sensor or an electrochemical sensor.
  • the breathalyzer 1 includes a signal processor and a display unit.
  • the signal processor may calculate the blood alcohol concentration of the subject by processing the electrical signal transmitted from the detector 30.
  • the electrical conductivity data of the heating element 22 may be processed to determine whether the sample gas is sufficiently supplied.
  • the display unit displays the alcohol concentration calculated by the signal processor. If the sample gas is not sufficiently supplied, the indicator may notify the measurer that the sample gas is not sufficiently supplied through a lighting or alarm.
  • the operation of the breathalyzer 1 will be described.
  • the start button (not shown) is pressed on the surface of the breathalyzer 1
  • the alcohol sensor 31 of the detector 30 is stabilized.
  • a current is applied to the heating element 22 through the stem pin 24 and the heater 20 is heated.
  • the display shows that the measurement preparation is completed.
  • sample gas When the subject injects an exhalation through the bulge 11, the sample gas is introduced through the sample gas inlet 121 of the sample gas passage 12.
  • the sample gas and the exhaled components are the same, but for convenience the exhaled after passing through the sample gas inlet 121 is called a sample gas.
  • Saliva contained in the introduced sample gas is discharged to the outside along with some sample gas through the sample gas discharge port 123.
  • the introduced sample gas is heated by the heater 20. Therefore, condensation of moisture in the sample gas can be prevented.
  • sample gas inlet 121 If the sample gas inlet 121 is too wide, the amount of sample gas introduced is too large to be sufficiently heated by the heater 20. On the contrary, if the sample gas inlet 121 is too narrow, sufficient sample gas is provided in the sensing unit 30. It is difficult to feed.
  • the temperature of the heating element 22 formed in the heater 20 is lowered by the introduced sample gas, and as a result, the resistance value of the heating element 22 is lowered. This change in resistance is transmitted to the signal processor.
  • the sample gas is heated in the sample gas passage 12 and then moves to the sample gas storage unit 13 through the sample gas outlet 122.
  • the pump 32 of the sensing unit 30 operates momentarily only about 4 seconds after the subject starts to exhale to collect a sample of the correct volume.
  • the electrical characteristic change of the alcohol sensor 31 is transmitted to the signal processing unit, and the signal processing unit calculates blood alcohol concentration of the subject through calculation and transfers it to the display unit.
  • the display unit displays the delivered blood alcohol concentration value outside of the breathalyzer.
  • the signal processing unit determines that the sample gas is not sufficiently introduced through the change in the resistance value of the heating element 22, the signal is sent to the display unit, and the display unit lights up or alarms to inform the operator that re-measurement is required.
  • FIG. 5 is a perspective view of a sample gas passage of a breathalyzer according to another embodiment of the present invention
  • Figure 6 is a cross-sectional view in the AA direction of the sample gas passage shown in Figure 5
  • Figure 7 is a view of the sample gas passage shown in Figure 5 BB direction cross section.
  • FIG. 5 differs only from the embodiment shown in FIG. 1 and the position of the sample gas outlet 124 of the sample gas passage 12 and the heater 40, and only this will be described in detail.
  • the sample gas discharge port 124 is formed around the upstream side of the sample gas passage 12.
  • the sample gas outlet 124 immediately discharges a portion of the introduced sample gas to the outside to prevent the temperature of the sample gas passage 12 from being lowered by a large amount of sample gas.
  • the heater 40 includes an insulator substrate 41, a heat generator 42 formed on the insulator substrate 41, and a plurality of stem pins 44 electrically connected to the heat generator 42. Include.
  • an electrode hole 43 penetrating the insulator substrate 41 is formed in the insulator substrate 41.
  • the electrode hole 43 is electrically connected to the heating element 42.
  • a pair of perforations 45 are formed around the heat generating element 42. Since the perforated part 45 is not connected to the start point and the end point, the center portion of the insulator substrate 41 on which the heating element 42 is formed is not separated from the insulator substrate 41.
  • the perforation part 45 plays a role of minimizing the diffusion of heat by the heating element 42 from the center of the heat-reducing body substrate 41 to the periphery. Without the perforations 45, heat generated in the heating element 42 may be diffused along the heat-reducing body substrate 41 and then transferred to the stem pin 44, which is not efficient for heating only the sample gas.
  • the perforations 45 and the heating element 42 can be formed as follows. After forming the electrode hole 43 and the perforation part 45 in the insulator substrate 41, the conductors 43 and the conductors connecting the heating element 42 and the electrode hole 43 are coated by screen printing. The heating element 42 pattern is formed at a central portion surrounded by the perforation portion 45 and is connected to the electrode hole 43 through a conductive wire. Next, the binder component in the applied platinum paste is removed through heat treatment, and the platinum is sintered to complete the heating element 42.
  • the stem pin 44 serves to support the insulator substrate 41 so as to float to the inside of the sample gas passage 12 at a predetermined height.
  • the stem pin 44 is inserted into the electrode hole 43 formed in the insulator substrate 41 to generate a heating element ( 42 is electrically connected.
  • This embodiment is easy to automate in that wire bonding is not necessary, and the work efficiency is very excellent.
  • the contact between the wire and the electrode pad by the external impact, or the defect itself such as breaking the wire itself has the advantage that is less likely to occur.
  • it is easy to integrate a plurality of insulator substrates 41 in a form in which a plurality of insulator substrates 41 are sequentially coupled to the stem pin 44.
  • FIG. 9 is a perspective view of the injuries of the breathalyzer according to another embodiment of the present invention.
  • the inhalation 51 of the breathalyzer according to the present embodiment is connected to the exhalation inlet 511 and the sample gas inlet 121 through which exhalation of the subject is introduced, and transfers a part of the exhaled inlet to the sample gas passage 12. Exhalation outlet 512 and the exhalation outlet 513 to immediately discharge a portion of the exhaled flow to the outside.
  • the exhalation outlet 513 serves to prevent the temperature of the sample gas passage 12 from being easily lowered by introducing only a portion of the exhaled inlet into the sample gas passage 12.
  • the cross-sectional area of the exhalation outlet 513 is preferably smaller than the cross-sectional area of the exhalation outlet 512. If the cross-sectional area of the exhalation outlet 513 is larger than the cross-sectional area of the exhalation outlet 512, the amount of sample gas flowing into the sample gas passage through the exhalation outlet 512 may be too small.
  • sample gas passage 12 and the detection unit 30 may be directly connected to supply the sample gas to the detection unit 30.
  • perforated part 45 is illustrated as being a pair of perforated parts 45 surrounding the heating element 42 in a c-shape, it may be curved, or may be a form in which several pairs overlap.
  • the heaters 20 and 40 have been described as using the heating elements 22 and 42 printed on the insulator substrates 21 and 41, but a heater such as platinum or a nichrome wire coil may be used.

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Abstract

The present invention relates to a breath alcohol analyzer, and more particularly, to a breath alcohol analyzer which prevents moisture within a unit for collecting sample gas from being condensed so as to precisely measure the blood alcohol content of a person to be measured. The breath alcohol analyzer according to the present invention includes: a blow pipe to contact the mouth of the person to be measured so as to receive exhaled air from the person; a sample gas inflow hole for feeding sample gas from the blow pipe; a unit for collecting sample gas having a sample gas passage including a sample gas discharge hole through which the fed sample gas is discharged toward a detection part; and a heater disposed in an inner space of the sample gas passage. The breath alcohol analyzer according to the present invention may include the heater in the sample gas passage to prevent moisture within the sample gas from being condensed in the unit for collecting sample gas and prevent alcohol within the sample gas from being dissolved by the moisture, thereby precisely measuring the blood alcohol content. In addition, since the heater is directly installed in the sample gas passage, the sample gas may be heated using a small amount of energy.

Description

음주측정기Breathalyzer
본 발명은 음주측정기에 관한 것으로서, 더욱 상세하게는, 시료가스채취부 내부의 수분 응축을 방지하여 피측정자의 혈중알코올농도를 정확하게 측정할 수 있는 음주측정기에 관한 것이다. The present invention relates to a breathalyzer, and more particularly, to a breathalyzer that can accurately measure the blood alcohol concentration of the subject by preventing the condensation of water in the sample gas collecting unit.
음주측정기는 들숨의 공기와 섞여서 날숨과 함께 배출되는 알코올의 농도를 측정한다. 날숨과 함께 배출되는 알코올은 혈액 속에 들어있던 알코올의 농도에 비례하므로 날숨에 포함된 알코올의 농도를 측정하면 혈중알코올농도를 계산할 수 있다. Breathalyzer measures the concentration of alcohol that is expelled with exhalation by mixing with air of inhalation. Alcohol discharged with exhalation is proportional to the concentration of alcohol in the blood, so measuring the concentration of alcohol contained in the exhalation can calculate the blood alcohol concentration.
음주측정기는 시료가스채취부, 감지부, 신호처리부, 표시부를 포함한다. 시료가스채취부는 피측정자가 날숨을 불어넣는 불대와 불대를 통해서 유입된 시료가스가 유동하는 통로를 포함한다. 감지부는 시료가스채취부를 통해서 채취된 시료가스 중의 알코올성분을 감지하여 전기신호를 발생하는 알코올센서를 포함한다. 신호처리부는 알코올센서로부터의 전기신호를 분석하여 혈중알코올농도를 계산하는 기능을 한다. 신호처리부에서 계산된 결과는 표시부에 표시된다. The breathalyzer includes a sample gas collecting unit, a sensing unit, a signal processing unit, and a display unit. The sample gas collection part includes a bleeding band for exhaling the subject and a passage through which the sample gas flowing through the bleeding band flows. The detection unit includes an alcohol sensor that detects an alcohol component in the sample gas collected through the sample gas collection unit and generates an electrical signal. The signal processor functions to calculate blood alcohol concentration by analyzing the electrical signal from the alcohol sensor. The result calculated by the signal processor is displayed on the display.
감지부의 알코올센서로는 연료전지식과 반도체식이 있다. 연료전지식은 정확도가 뛰어난 반면 수명이 짧고 응답속도가 느리다는 단점이 있고, 반도체식은 수명이 길고 응답속도가 빠른 대신 상대적으로 정확도가 떨어진다는 단점이 있다. Alcohol sensors of the sensing unit include a fuel cell type and a semiconductor type. Fuel cell type has the disadvantage of short life and slow response time while high accuracy, while semiconductor type has the disadvantage of relatively low accuracy instead of long life and fast response time.
음주측정기의 구성 중 시료가스채취부는 음주측정기의 구성에 있어서 알코올센서와 함께 음주측정의 정확도를 보장하기 위한 가장 중요한 부분 중의 하나이다. 알코올센서의 감도가 아무리 뛰어나다고 하더라도, 피측정자의 날숨을 정확하게 채취하지 못한다면 정확도에 문제가 생긴다. Sample gas collection part of the configuration of the breathalyzer is one of the most important parts to ensure the accuracy of the breathalyzer with the alcohol sensor in the configuration of the breathalyzer. No matter how excellent the sensitivity of the alcohol sensor is, accuracy can be a problem if the exhalation of the subject is not accurately captured.
특히, 겨울철에는 기온이 날숨의 온도에 비해서 매우 낮으므로, 시료가스채취부에 피측정자의 날숨에 포함되어 있던 수분이 응축될 수 있다. 알코올 성분은 수분에 쉽게 용해가 된다. 알코올 성분이 수분에 용해되면, 시료가스의 알코올 농도가 낮아지므로, 알코올 농도를 정확하게 측정할 수 없다는 문제가 있다.In particular, in winter, since the temperature is very low compared to the temperature of the exhalation, moisture contained in the exhalation of the subject can be condensed in the sample gas collection unit. The alcohol component is easily soluble in water. When the alcohol component is dissolved in water, since the alcohol concentration of the sample gas is lowered, there is a problem that the alcohol concentration cannot be accurately measured.
또한, 사용자 체내의 혈중알코올농도를 정확히 측정하기 위해서는 사용자의 날숨이 외부 공기와 섞여서 희석되지 않아야 한다. 이러한 시료채취는 사용자가 일정 세기 이상의 압력으로 일정시간 이상 불지 못하면 불가능하다. 즉, 시료가스채취부는 피측정자가 일정한 세기 이상으로 날숨을 불고 있다는 사실을 알아내어 시료가 올바르게 채취되고 있음을 확인할 수 있어야 한다. In addition, in order to accurately measure the blood alcohol concentration in the user's body should not be diluted by mixing the user's exhalation with the outside air. Such sampling is impossible if the user cannot blow more than a certain period of time under a certain intensity. In other words, the sample gas collection unit should be able to confirm that the sample is being collected correctly by finding out that the subject is exhaling more than a certain intensity.
본 발명은 상술한 문제점을 개선하기 위한 것으로서, 겨울철 입김이 응축되어 발생한 수분에 알코올이 용해되어 알코올의 농도가 낮게 측정되는 문제를 해결한 음주측정기를 제공하는 것을 목적으로 한다. An object of the present invention is to provide a breathalyzer that solves the problem that alcohol is dissolved in water generated by condensation during winter breathing so that the concentration of alcohol is low.
상기 목적을 달성하기 위한 본 발명에 따른 음주측정기는, 피측정자가 입을 대고 날숨을 불어넣는 불대와, 상기 불대로부터 시료가스가 유입되는 시료가스유입구, 유입된 시료가스가 감지부 측으로 유출되는 시료가스유출구를 포함하는 시료가스통로를 구비하는 시료가스채취부; 및 상기 시료가스통로의 내부 공간에 배치된 히터를 포함한다. Breathalyzer according to the present invention for achieving the above object, the inhalation breathing the subject to breathe, the sample gas inlet through which the sample gas is introduced, the sample gas flows into the sensing unit side A sample gas collecting unit having a sample gas passage including a gas outlet; And a heater disposed in an inner space of the sample gas passage.
본 발명에 따른 음주측정기는 시료가스통로에 히터가 설치되어 있으므로, 시료가스 내의 수분이 시료가스채취부에서 응축되어, 시료가스 내의 알코올을 용해하는 것을 방지함으로써, 정확한 측정이 가능하다. 또한, 시료가스통로 내부에 직접 히터를 설치함으로써, 적은 에너지로 시료가스를 가열할 수 있다.In the breathalyzer according to the present invention, since the heater is installed in the sample gas passage, the moisture in the sample gas is condensed in the sample gas collecting unit, thereby preventing dissolution of the alcohol in the sample gas, thereby enabling accurate measurement. In addition, by providing a heater directly inside the sample gas passage, the sample gas can be heated with little energy.
전술한 히터는, 상기 시료가스통로의 내부 공간에 배치된 절연체기판과, 상기 절연체기판에 형성된 발열체와, 상기 발열체와 전기적으로 연결되며, 상기 절연체기판을 지지하는 복수의 스템핀들을 구비할 수 있다. The heater may include an insulator substrate disposed in an inner space of the sample gas passage, a heating element formed in the insulator substrate, and a plurality of stem pins electrically connected to the heating element and supporting the insulator substrate. .
전술한 절연체기판에는 상기 절연체기판을 관통하며, 상기 발열체와 전기적으로 연결된 전극홀들이 형성되어 있으며, 상기 스템핀들은 상기 전극홀들에 전기적으로 연결되어, 상기 발열체에 전력을 공급할 수 있다.The above-described insulator substrate may have electrode holes penetrating the insulator substrate and electrically connected to the heating element, and the stem pins may be electrically connected to the electrode holes to supply power to the heating element.
상기 절연체기판의 상기 발열체의 둘레에는 상기 절연체기판을 관통하는 복수의 천공부들이 형성되는 것이 바람직하다. 발열체에서 발생한 열이 주위로 전도되는 것을 방지할 수 있기 때문이다. 발열체에서 발생한 열이 절연체기판을 통해서 전도된 후 스템핀을 통해서 시료가스통로 외부로 전도될 수 있기 때문이다. Preferably, a plurality of perforations penetrating the insulator substrate are formed around the heating element of the insulator substrate. This is because heat generated in the heating element can be prevented from being conducted to the surroundings. This is because heat generated in the heating element may be conducted through the insulator substrate and then to the outside of the sample gas passage through the stem pin.
상기 발열체와 상기 스템핀들이 와이어로 본딩되어 전기적으로 연결될 수도 있다.The heating element and the stem pin may be electrically connected by bonding with a wire.
상기 발열체는 스크린 프린팅에 의해서 형성될 수 있다.The heating element may be formed by screen printing.
본 발명에 따른 음주측정기는 상기 발열체의 전기전도도 변화를 측정함으로써, 시료가스의 유입 여부를 측정할 수 있다. Breathalyzer according to the present invention by measuring the change in the electrical conductivity of the heating element, it can measure whether the sample gas inflow.
전술한 시료가스통로에는, 상기 시료가스유입구를 통해서 유입된 시료가스의 일부가 외부로 배출되도록 복수의 시료가스유출구가 형성된 것이 바람직하며, 상기 시료가스통로의 단면적은 상기 시료가스유입구 및 시료가스유출구의 면적에 비해 넓은 것이 바람직하다. In the above-described sample gas passage, it is preferable that a plurality of sample gas outlets are formed so that a part of the sample gas introduced through the sample gas inlet is discharged to the outside, and the cross-sectional areas of the sample gas passage are the sample gas inlet and the sample gas outlet. It is preferable that it is wide compared with the area of.
상기 불대는, 피측정자의 날숨이 유입되는 날숨유입구, 상기 시료가스유입구와 연결되어, 유입된 날숨의 일부를 상기 시료가스통로에 전달하는 날숨유출구, 및 유입된 날숨의 일부를 외부로 배출하는 날숨배출구를 포함하는 것이 바람직하다.The inflation is connected to the exhalation inlet in which the exhalation of the subject is introduced, the exhalation outlet for transferring a part of the exhaled inlet to the sample gas passage, and the exhalation for discharging a part of the exhaled to the outside It is preferred to include an outlet.
또한, 상기 날숨유출구의 단면적은 상기 날숨배출구의 단면적에 비해서 넓은 것이 바람직하다. In addition, it is preferable that the cross-sectional area of the exhalation outlet is wider than the cross-sectional area of the exhalation outlet.
본 발명에 따른 음주단속기는 시료가스통로에 히터가 설치되어 있다. 따라서 시료가스 내의 수분이 시료가스채취부에서 응축되어, 시료가스 내의 알코올을 용해하는 것을 방지할 수 있다. 이로 인해 시료가스 내의 알코올 농도의 정확한 측정이 가능하다. 또한, 시료가스통로 내부에 직접 히터를 설치함으로써, 적은 에너지로 시료가스를 가열할 수 있다.The drunk breaker according to the present invention is provided with a heater in the sample gas passage. Therefore, moisture in the sample gas can be condensed in the sample gas collecting unit, thereby preventing dissolution of the alcohol in the sample gas. This enables accurate measurement of the alcohol concentration in the sample gas. In addition, by providing a heater directly inside the sample gas passage, the sample gas can be heated with little energy.
도 1은 본 발명의 일실시예에 따른 음주측정기의 구성도이다.1 is a block diagram of a breathalyzer according to one embodiment of the present invention.
도 2는 도 1에 도시된 시료가스통로의 사시도이다.FIG. 2 is a perspective view of the sample gas passage shown in FIG. 1.
도 3은 도 2에 도시된 시료가스통로의 A-A방향 단면도이다.3 is a cross-sectional view along the A-A direction of the sample gas passage shown in FIG.
도 4는 도 2에 도시된 시료가스통로의 B-B방향 단면도이다. 4 is a cross-sectional view taken along the B-B direction of the sample gas passage shown in FIG. 2.
도 5는 본 발명의 다른 실시예에 따른 음주측정기의 시료가스통로의 사시도이다.5 is a perspective view of a sample gas passage of a breathalyzer according to another embodiment of the present invention.
도 6은 도 5에 도시된 시료가스통로의 A-A방향 단면도이다.6 is a cross-sectional view along the A-A direction of the sample gas passage shown in FIG.
도 7은 도 5에 도시된 시료가스통로의 B-B방향 단면도이다.7 is a cross-sectional view taken along the B-B direction of the sample gas passage shown in FIG. 5.
도 8은 히터의 또 다른 실시예를 나타낸 단면도이다. 8 is a cross-sectional view showing yet another embodiment of the heater.
도 9는 본 발명의 또 다른 실시예에 따른 음주측정기의 불대의 사시도이다.9 is a perspective view of the injuries of the breathalyzer according to another embodiment of the present invention.
이하, 첨부된 도면을 참고하여 본 발명의 일실시예를 상세하게 설명한다. Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.
도 1은 본 발명의 일실시예에 따른 음주측정기의 구성도이다. 도 1을 참고하면, 음주측정기(1)는 시료가스채취부(10), 히터(20) 및 감지부(30)를 포함한다. 1 is a block diagram of a breathalyzer according to one embodiment of the present invention. Referring to FIG. 1, the breathalyzer 1 includes a sample gas collecting unit 10, a heater 20, and a sensing unit 30.
시료가스채취부(10)는 피측정자의 입이나 코로부터 배출된 날숨으로부터 적당한 양의 시료가스를 채취하여 감지부(30)에 전달하는 역할을 한다. 시료가스채취부(10)는 피측정자가 입을 대고 날숨을 불어넣는 불대(11), 불대(11)를 통해서 유입된 시료가스가 유동하는 시료가스통로(12), 시료가스통로(12)를 통과한 시료가스가 머무르다 배출되는 시료가스저장부(13)를 포함한다. The sample gas collecting unit 10 collects an appropriate amount of sample gas from the exhalation discharged from the mouth or nose of the subject and delivers the sample gas to the sensing unit 30. The sample gas collecting unit 10 passes through the sample gas passage 12 and the sample gas passage 12 through which the sample gas introduced through the candle holder 11, the breathing apparatus 11, exhales and exhales. And a sample gas storage unit 13 in which one sample gas stays and is discharged.
불대(11)는 빨대형태로서, 시료가스통로(12)의 상류 측에 결합한다. 불대(11)는 탈부착이 가능하므로 사용 후 세척이 용이하다. The candlestick 11 is in the form of a straw and is coupled to an upstream side of the sample gas passage 12. The Buddha 11 is detachable and easy to clean after use.
도 2는 도 1에 도시된 시료가스통로의 사시도이며, 도 3은 도 2에 도시된 시료가스통로의 A-A방향 단면도이다. 도 2와 3을 참고하면, 시료가스통로(12)는 불대(11)와 연결되어 시료가스가 유입되는 시료가스유입구(121), 시료가스저장부(13)와 연결된 시료가스유출구(122) 및 시료가스배출구(123)를 구비한다. FIG. 2 is a perspective view of the sample gas passage shown in FIG. 1, and FIG. 3 is a cross-sectional view along the A-A direction of the sample gas passage shown in FIG. Referring to FIGS. 2 and 3, the sample gas passage 12 is connected to the fire zone 11, the sample gas inlet 121 through which the sample gas is introduced, the sample gas outlet 122 connected to the sample gas storage 13, and A sample gas discharge port 123 is provided.
시료가스배출구(123)는 시료가스유입구(121) 측에 형성되며, 유입된 시료가스의 일부를 즉시 외부로 배출하여 많은 양의 시료가스에 의해 시료가스통로(12)의 온도가 낮아지는 것을 방지하는 역할을 한다. The sample gas outlet 123 is formed at the sample gas inlet 121 and immediately discharges a part of the sample gas introduced to the outside to prevent the temperature of the sample gas passage 12 from being lowered by a large amount of sample gas. It plays a role.
시료가스유입구(121)와 시료가스유출구(122)의 지름은 시료가스통로(12)의 내부 지름에 비해서 작다. 한꺼번에 너무 많은 양의 시료가스가 유입되어 시료가스통로(12)의 온도가 낮아지는 것을 방지하기 위함이다.The diameters of the sample gas inlet 121 and the sample gas outlet 122 are smaller than the inner diameter of the sample gas passage 12. This is to prevent the sample gas passage 12 from lowering due to the excessive amount of sample gas flowing in at one time.
시료가스통로(12)에는 히터(20)가 설치되어 시료가스통로(12) 내의 시료가스를 가열한다. 히터(20)는 시료가스 내에 포함되어 있는 수분이 응축하는 것을 방지하는 기능을 한다. A heater 20 is installed in the sample gas passage 12 to heat the sample gas in the sample gas passage 12. The heater 20 functions to prevent condensation of moisture contained in the sample gas.
도 4는 도 2에 도시된 시료가스통로의 B-B방향 단면도이다. 도 3과 4를 참고하면, 히터(20)는 절연체기판(21), 절연체기판(21)에 형성된 발열체(22)와, 발열체(22)의 전극패드(23)와 와이어(25)로 본딩되어 있는 복수의 스템핀(24)들을 포함한다.4 is a cross-sectional view taken along the B-B direction of the sample gas passage shown in FIG. 2. 3 and 4, the heater 20 is bonded to the insulator substrate 21, the heating element 22 formed on the insulator substrate 21, the electrode pad 23 of the heating element 22, and the wire 25. A plurality of stem pins 24.
절연체기판(21)은 특별히 제한하는 것은 아니지만 알루미나(Al2O3)기판을 사용하는 것이 바람직하다. 그 두께는 대략 0.250㎜인 것이 주로 사용되나, 이에 한정되는 것은 아니다. The insulator substrate 21 is not particularly limited, but an alumina (Al 2 O 3 ) substrate is preferably used. The thickness is mainly used is about 0.250mm, but is not limited thereto.
발열체(22)는 일반적으로 백금(Pt)을 이용하여 형성한다. 절연체기판(21)에 발열체(22)를 형성하는 방법을 예로 들면 다음과 같다. 히터 크기의 셀 단위로 절단할 수 있도록, 레이저를 이용하여 알루미나기판의 표면에 금을 형성한다. 다음, 금이 형성되어 있는 알루미나기판의 표면을 세척한다. 그리고 세척된 알루미나기판의 표면에 스크린 프린팅 방법으로 백금 페이스트를 도포한 후 건조하여 패턴을 형성한다. 패턴은 충분한 발열이 가능하도록 지그재그형태로 형성하는 것이 일반적이다. 마지막으로, 진공 또는 환원분위기에서 열처리를 하여 백금 페이스트 내의 바인더를 제거하고, 백금을 소결한다. The heating element 22 is generally formed using platinum (Pt). An example of the method of forming the heating element 22 on the insulator substrate 21 is as follows. Gold can be formed on the surface of the alumina substrate using a laser so that the heater can be cut in cell units. Next, the surface of the alumina substrate on which gold is formed is washed. Then, after the platinum paste is applied to the surface of the washed alumina substrate by screen printing, it is dried to form a pattern. The pattern is generally formed in a zigzag form to allow sufficient heat generation. Finally, heat treatment is carried out in a vacuum or reducing atmosphere to remove the binder in the platinum paste, and the platinum is sintered.
스템핀(24)은 절연체기판(21)을 시료가스통로(12)의 내부에 소정 높이로 떠 있도록 지탱하는 역할을 하는 것으로서, 절연체기판(21)에 형성된 발열체(22)의 전극패드(23)와 전도성 와이어(25)에 의해서 본딩된다. 다시 말해서 절연체기판(21)은 스템핀(24)과 접촉되어 있는 와이어(25)에 의해서 시료가스통로(12)의 내부에 떠 있게 된다. 스템핀(24)은 발열체(22)와 전기적으로 결합되어 있어, 발열체(22)에 전류를 가하는 역할을 한다. The stem pin 24 serves to support the insulator substrate 21 to float at a predetermined height inside the sample gas passage 12, and the electrode pads 23 of the heating element 22 formed on the insulator substrate 21 are provided. And by a conductive wire 25. In other words, the insulator substrate 21 floats inside the sample gas passage 12 by the wire 25 in contact with the stem pin 24. The stem pin 24 is electrically coupled to the heating element 22 to serve to apply a current to the heating element 22.
또한, 발열체(22)의 전기전도도도 발열체(22)와 결합된 스템핀(24)을 통해서 측정할 수 있다. 백금은 온도에 비례하여 저항값이 증가하는 일종의 정특성 서미스터이므로 발열체(22)의 전기전도도를 측정하면 발열체(22)의 온도를 알 수 있다. 발열체(22)의 온도는 시료가스통로(12)에 유입되는 시료가스의 유량에 따라서 변화하므로, 발열체(22)의 전기전도도를 측정하면, 시료가스가 충분히 유입되는지 여부를 확인할 수 있다. In addition, the electrical conductivity of the heating element 22 can also be measured through the stem pin 24 coupled to the heating element 22. Since platinum is a kind of static thermistor whose resistance value increases in proportion to temperature, the temperature of the heating element 22 can be known by measuring the electrical conductivity of the heating element 22. Since the temperature of the heating element 22 changes according to the flow rate of the sample gas flowing into the sample gas passage 12, by measuring the electrical conductivity of the heating element 22, it is possible to confirm whether or not the sample gas is sufficiently introduced.
예를 들어, 감지부(30)에서 알코올농도 측정이 완료되기 이전에 발열체(22)의 전기전도도가 시료가스가 유입되기 전 수준으로 되돌아간 것이 확인되면, 시료가스가 충분히 공급되지 않았음을 알 수 있다. For example, when it is confirmed that the electrical conductivity of the heating element 22 returns to the level before the sample gas is introduced before the alcohol concentration measurement is completed in the sensing unit 30, it is determined that the sample gas is not sufficiently supplied. Can be.
도 1에 도시된 바와 같이, 시료가스통로(12)의 하류 측에는 시료가스저장부(13)가 배치된다. 시료가스저장부(13)는 감지부(30)와 연통되어 감지부(30)에 시료가스를 공급한다. 감지부(30)에 공급되고 남은 시료가스는 외부로 배출된다. As shown in FIG. 1, a sample gas storage unit 13 is disposed downstream of the sample gas passage 12. The sample gas storage unit 13 communicates with the detection unit 30 to supply the sample gas to the detection unit 30. Sample gas remaining after being supplied to the sensing unit 30 is discharged to the outside.
감지부(30)는 알코올센서(31)와 알코올센서(31)의 하류 측에 설치된 흡입펌프(32)를 포함한다. 상술한 바와 같이 감지부(30)는 시료가스저장부(13)와 연통되어 있으므로, 흡입펌프(32)가 작동하면 시료가스저장부(13)의 시료가스가 감지부(30)에 공급된다. The sensing unit 30 includes an alcohol sensor 31 and a suction pump 32 installed downstream of the alcohol sensor 31. As described above, since the detection unit 30 is in communication with the sample gas storage unit 13, when the suction pump 32 operates, the sample gas of the sample gas storage unit 13 is supplied to the detection unit 30.
감지부(30)에 공급된 시료가스는 감지부(30)의 알코올센서(31)의 전기적 특성을 변화시킨다. 알코올센서(31)로는 반도체식센서 또는 전기화학식 센서를 사용한다. The sample gas supplied to the sensing unit 30 changes the electrical characteristics of the alcohol sensor 31 of the sensing unit 30. The alcohol sensor 31 uses a semiconductor sensor or an electrochemical sensor.
또한, 도시하지 않았으나, 음주측정기(1)는 신호처리부와 표시부를 포함한다. 신호처리부는 감지부(30)에서 전달된 전기적 신호를 처리하여, 피측정자의 혈중알코올농도를 계산할 수 있다. 또한, 발열체(22)의 전기전도도 데이터를 처리하여 시료가스가 충분히 공급되는지 여부를 판단할 수 있다. In addition, although not shown, the breathalyzer 1 includes a signal processor and a display unit. The signal processor may calculate the blood alcohol concentration of the subject by processing the electrical signal transmitted from the detector 30. In addition, the electrical conductivity data of the heating element 22 may be processed to determine whether the sample gas is sufficiently supplied.
표시부는 신호처리부에서 계산된 알코올농도를 표시하며, 시료가스가 충분히 공급되지 않은 경우에는 점등 또는 알람 등을 통해서 시료가스가 충분히 공급되지 않았음을 측정자에게 알릴 수 있다.The display unit displays the alcohol concentration calculated by the signal processor. If the sample gas is not sufficiently supplied, the indicator may notify the measurer that the sample gas is not sufficiently supplied through a lighting or alarm.
이하, 본 발명의 일실시예에 따른 음주측정기(1)의 작용에 대해서 설명한다. 음주측정기(1)의 표면에 시작 버튼(미도시)을 누르면, 감지부(30)의 알코올센서(31)가 안정화된다. 동시에 스템핀(24)을 통해서 발열체(22)에 전류가 가해지고 히터(20)가 가열된다. 안정화가 완료되면 측정준비가 완료되었음이 표시부를 통해서 표시된다. Hereinafter, the operation of the breathalyzer 1 according to an embodiment of the present invention will be described. When the start button (not shown) is pressed on the surface of the breathalyzer 1, the alcohol sensor 31 of the detector 30 is stabilized. At the same time, a current is applied to the heating element 22 through the stem pin 24 and the heater 20 is heated. When the stabilization is completed, the display shows that the measurement preparation is completed.
피측정자가 불대(11)를 통해서 날숨을 주입하면, 시료가스통로(12)의 시료가스유입구(121)를 통해서 시료가스가 유입된다. 시료가스와 날숨은 성분이 동일하나 편의상 시료가스유입구(121)를 통과한 이후의 날숨은 시료가스라고 부른다. When the subject injects an exhalation through the bulge 11, the sample gas is introduced through the sample gas inlet 121 of the sample gas passage 12. The sample gas and the exhaled components are the same, but for convenience the exhaled after passing through the sample gas inlet 121 is called a sample gas.
유입된 시료가스에 포함된 타액은 시료가스배출구(123)를 통해서 일부 시료가스와 함께 외부로 배출된다. 유입된 시료가스는 히터(20)에 의해서 가열된다. 따라서 시료가스 내의 수분이 응축되는 것을 방지할 수 있다. Saliva contained in the introduced sample gas is discharged to the outside along with some sample gas through the sample gas discharge port 123. The introduced sample gas is heated by the heater 20. Therefore, condensation of moisture in the sample gas can be prevented.
시료가스유입구(121)가 너무 넓으면 유입되는 시료가스의 양이 너무 많아서 히터(20)에 의해서 충분히 가열되기 어려우며, 반대로 시료가스유입구(121)가 너무 좁으면 감지부(30)에 충분한 시료가스를 공급하기 어렵다. If the sample gas inlet 121 is too wide, the amount of sample gas introduced is too large to be sufficiently heated by the heater 20. On the contrary, if the sample gas inlet 121 is too narrow, sufficient sample gas is provided in the sensing unit 30. It is difficult to feed.
시료가스가 가열됨과 동시에 유입된 시료가스에 의해서 히터(20)에 형성되어 있는 발열체(22)는 온도가 낮아지고, 그 결과 발열체(22)의 저항값이 낮아진다. 이러한 저항값의 변화는 신호처리부에 전달된다. As the sample gas is heated, the temperature of the heating element 22 formed in the heater 20 is lowered by the introduced sample gas, and as a result, the resistance value of the heating element 22 is lowered. This change in resistance is transmitted to the signal processor.
시료가스는 시료가스통로(12)에서 가열된 후 시료가스유출구(122)를 통해서 시료가스저장부(13)로 이동한다. The sample gas is heated in the sample gas passage 12 and then moves to the sample gas storage unit 13 through the sample gas outlet 122.
저항값의 변화를 통해서 시료가스가 충분히 유입된 것이 확인되면, 시료가스저장부(13)로 이동한 시료가스의 일부가 감지부(30)의 펌프(32)에 의해서 감지부(30)의 알코올센서(31) 주위로 이동하여 알코올센서(31)의 전기적 특성을 변화시킨다. When it is confirmed that the sample gas is sufficiently introduced through the change in the resistance value, a portion of the sample gas moved to the sample gas storage unit 13 is moved by the pump 32 of the sensing unit 30 to the alcohol of the sensing unit 30. Moving around the sensor 31 changes the electrical characteristics of the alcohol sensor 31.
감지부(30)의 펌프(32)는 피측정자가 날숨을 불기 시작한 후 약 4초가 지난 시점에만 순간적으로 동작하여 정확한 부피의 샘플을 채취한다. The pump 32 of the sensing unit 30 operates momentarily only about 4 seconds after the subject starts to exhale to collect a sample of the correct volume.
알코올센서(31)의 전기적 특성 변화는 신호처리부에 전달되고, 신호처리부에서는 계산을 통해서 피측정자의 혈중알코올농도를 계산한 후 이를 표시부에 전달한다. 표시부는 전달된 혈중알코올 농도 값을 음주측정기의 외부에 표시한다. The electrical characteristic change of the alcohol sensor 31 is transmitted to the signal processing unit, and the signal processing unit calculates blood alcohol concentration of the subject through calculation and transfers it to the display unit. The display unit displays the delivered blood alcohol concentration value outside of the breathalyzer.
만약, 신호처리부에서 발열체(22) 저항값의 변화를 통해서 시료가스가 충분히 유입되지 않았다고 판단하면, 표시부에 신호를 보내고, 표시부에서는 점등 또는 알람을 통해 측정자에게 재측정이 필요함을 알린다. If the signal processing unit determines that the sample gas is not sufficiently introduced through the change in the resistance value of the heating element 22, the signal is sent to the display unit, and the display unit lights up or alarms to inform the operator that re-measurement is required.
도 5는 본 발명의 다른 실시예에 따른 음주측정기의 시료가스통로의 사시도이며, 도 6은 도 5에 도시된 시료가스통로의 A-A방향 단면도이며, 도 7은 도 5에 도시된 시료가스통로의 B-B방향 단면도이다. 5 is a perspective view of a sample gas passage of a breathalyzer according to another embodiment of the present invention, Figure 6 is a cross-sectional view in the AA direction of the sample gas passage shown in Figure 5, Figure 7 is a view of the sample gas passage shown in Figure 5 BB direction cross section.
도 5에 도시된 실시예는 도 1에 도시된 실시예와 시료가스통로(12)의 시료가스배출구(124)의 위치 및 히터(40)에만 차이가 있으므로, 이에 대해서만 상세하게 설명한다. The embodiment shown in FIG. 5 differs only from the embodiment shown in FIG. 1 and the position of the sample gas outlet 124 of the sample gas passage 12 and the heater 40, and only this will be described in detail.
본 실시예에 있어서, 시료가스배출구(124)는 시료가스통로(12)의 상류 측 둘레에 형성되어 있다. 시료가스배출구(124)는 유입된 시료가스의 일부를 즉시 외부로 배출하여 많은 양의 시료가스에 의해 시료가스통로(12)의 온도가 낮아지는 것을 방지하는 역할을 한다. In this embodiment, the sample gas discharge port 124 is formed around the upstream side of the sample gas passage 12. The sample gas outlet 124 immediately discharges a portion of the introduced sample gas to the outside to prevent the temperature of the sample gas passage 12 from being lowered by a large amount of sample gas.
도 6과 7을 참고하면, 히터(40)는 절연체기판(41), 절연체기판(41)에 형성된 발열체(42)와, 발열체(42)와 전기적으로 연결되어 있는 복수의 스템핀(44)들을 포함한다.6 and 7, the heater 40 includes an insulator substrate 41, a heat generator 42 formed on the insulator substrate 41, and a plurality of stem pins 44 electrically connected to the heat generator 42. Include.
절연체기판(41)에는 절연체기판(41)을 관통하는 전극홀(43)이 형성되어 있다. 전극홀(43)은 발열체(42)와 전기적으로 연결되어 있다. In the insulator substrate 41, an electrode hole 43 penetrating the insulator substrate 41 is formed. The electrode hole 43 is electrically connected to the heating element 42.
발열체(42)의 둘레에는 한 쌍의 천공부(45)가 형성되어 있다. 천공부(45)는 시작점과 끝점이 연결되어 있지 않아 발열체(42)가 형성된 절연체기판(41)의 중심부가 절연체기판(41)으로부터 분리되지 않는다. 천공부(45)는 발열체(42)에 의한 열이 절열체기판(41)의 중심부에서 둘레부로 확산되는 것을 최소화하는 역할을 한다. 천공부(45)가 없으면 발열체(42)에서 발생한 열은 절열체기판(41)을 따라서 확산된 후, 스템핀(44)까지 전달될 수 있어, 시료가스만을 가열하는데 효율적이지 않다. A pair of perforations 45 are formed around the heat generating element 42. Since the perforated part 45 is not connected to the start point and the end point, the center portion of the insulator substrate 41 on which the heating element 42 is formed is not separated from the insulator substrate 41. The perforation part 45 plays a role of minimizing the diffusion of heat by the heating element 42 from the center of the heat-reducing body substrate 41 to the periphery. Without the perforations 45, heat generated in the heating element 42 may be diffused along the heat-reducing body substrate 41 and then transferred to the stem pin 44, which is not efficient for heating only the sample gas.
본 실시예에 있어서, 천공부(45)와 발열체(42)는 다음과 같이 형성할 수 있다. 절연체기판(41)에 전극홀(43), 천공부(45)를 형성한 후 스크린 프린팅을 통해서 발열체(42)패턴 및 발열체(42)와 전극홀(43)을 연결하는 도선을 도포한다. 발열체(42)패턴은 천공부(45)에 의해서 둘러싸인 중심부에 형성되며, 도선을 통해서 전극홀(43)과 연결된다. 다음 열처리를 통해서 도포된 백금 페이스트 내의 바인더성분을 제거하고, 백금을 소결하여 발열체(42)를 완성한다. In the present embodiment, the perforations 45 and the heating element 42 can be formed as follows. After forming the electrode hole 43 and the perforation part 45 in the insulator substrate 41, the conductors 43 and the conductors connecting the heating element 42 and the electrode hole 43 are coated by screen printing. The heating element 42 pattern is formed at a central portion surrounded by the perforation portion 45 and is connected to the electrode hole 43 through a conductive wire. Next, the binder component in the applied platinum paste is removed through heat treatment, and the platinum is sintered to complete the heating element 42.
스템핀(44)은 절연체기판(41)을 시료가스통로(12)의 내부에 소정 높이로 떠 있도록 지탱하는 역할을 하는 것으로서, 절연체기판(41)에 형성된 전극홀(43)에 삽입되어 발열체(42)와 전기적으로 연결된다. The stem pin 44 serves to support the insulator substrate 41 so as to float to the inside of the sample gas passage 12 at a predetermined height. The stem pin 44 is inserted into the electrode hole 43 formed in the insulator substrate 41 to generate a heating element ( 42 is electrically connected.
본 실시예는 와이어 본딩이 필요 없다는 점에서 자동화가 용이하며, 작업효율이 매우 뛰어나다. 또한, 외부충격에 의해서 와이어와 전극패드 사이의 접점이 떨어지거나, 와이어 자체가 끊어지는 등의 불량이 발생할 가능성이 작다는 장점 있다. 또한, 도 8에 도시된 바와 같이 다수의 절연체기판(41)들이 스템핀(44)에 순차적으로 결합한 형태로 집적화하는 것이 용이하다. This embodiment is easy to automate in that wire bonding is not necessary, and the work efficiency is very excellent. In addition, the contact between the wire and the electrode pad by the external impact, or the defect itself such as breaking the wire itself has the advantage that is less likely to occur. In addition, as illustrated in FIG. 8, it is easy to integrate a plurality of insulator substrates 41 in a form in which a plurality of insulator substrates 41 are sequentially coupled to the stem pin 44.
도 9는 본 발명의 또 다른 실시예에 따른 음주측정기의 불대의 사시도이다.9 is a perspective view of the injuries of the breathalyzer according to another embodiment of the present invention.
본 실시예에 따른 음주측정기의 불대(51)는 피측정자의 날숨이 유입되는 날숨유입구(511), 시료가스유입구(121)와 연결되어, 유입된 날숨의 일부를 시료가스통로(12)에 전달하는 날숨유출구(512) 및 유입된 날숨 중에서 일부를 곧바로 외부로 배출하는 날숨배출구(513)을 포함한다.The inhalation 51 of the breathalyzer according to the present embodiment is connected to the exhalation inlet 511 and the sample gas inlet 121 through which exhalation of the subject is introduced, and transfers a part of the exhaled inlet to the sample gas passage 12. Exhalation outlet 512 and the exhalation outlet 513 to immediately discharge a portion of the exhaled flow to the outside.
날숨배출구(513)는 유입된 날숨 중에서 일부만을 시료가스통로(12)로 유입시켜, 시료가스통로(12)의 온도가 쉽게 낮아지는 것을 방지하는 역할을 한다. 날숨배출구(513)의 단면적은 날숨유출구(512)의 단면적에 비해서 작은 것이 바람직하다. 날숨배출구(513)의 단면적이 날숨유출구(512)의 단면적에 비해서 크면, 날숨유출구(512)를 통해서 시료가스통로로 유입되는 시료가스의 양이 너무 작아질 수 있기 때문이다. The exhalation outlet 513 serves to prevent the temperature of the sample gas passage 12 from being easily lowered by introducing only a portion of the exhaled inlet into the sample gas passage 12. The cross-sectional area of the exhalation outlet 513 is preferably smaller than the cross-sectional area of the exhalation outlet 512. If the cross-sectional area of the exhalation outlet 513 is larger than the cross-sectional area of the exhalation outlet 512, the amount of sample gas flowing into the sample gas passage through the exhalation outlet 512 may be too small.
이상, 본 발명의 일실시예를 설명하였으나, 본 발명의 범위에서 벗어나지 않는 한도 내에서 여러 가지 변형이 가능함은 명백하다. 예를 들면, 별도의 시료가스저장부(13)를 구비하는 것으로 설명하였으나, 시료가스통로(12)와 감지부(30)를 직접 연결하여 감지부(30)에 시료가스를 공급할 수도 있다. While one embodiment of the present invention has been described above, it is apparent that various modifications are possible without departing from the scope of the present invention. For example, although described as having a separate sample gas storage unit 13, the sample gas passage 12 and the detection unit 30 may be directly connected to supply the sample gas to the detection unit 30.
또한, 천공부(45)는 ㄷ자 형태로 발열체(42)를 감싸는 한 쌍의 천공부(45)인 것으로 도시하였으나, 곡선형태일 수도 있으며, 여러 쌍이 중첩되는 형태일 수도 있다.In addition, although the perforated part 45 is illustrated as being a pair of perforated parts 45 surrounding the heating element 42 in a c-shape, it may be curved, or may be a form in which several pairs overlap.
또한, 히터(20, 40)는 절연체기판(21, 41)위에 인쇄된 발열체(22, 42)를 이용하는 것으로 설명하였으나, 백금이나 니크롬선 코일과 같은 형태의 히터를 사용할 수도 있다.In addition, the heaters 20 and 40 have been described as using the heating elements 22 and 42 printed on the insulator substrates 21 and 41, but a heater such as platinum or a nichrome wire coil may be used.
<부호의 설명><Description of the code>
1: 음주측정기 1: breathalyzer
10: 시료가스채취부 11: 불대10: sample gas collecting unit 11: fire
12: 시료가스통로 13: 시료가스저장부12: Sample gas passage 13: Sample gas storage unit
20, 40: 히터 21, 41: 절연체기판20, 40: heater 21, 41: insulator substrate
22, 42: 발열체 23: 전극패드22, 42: heating element 23: electrode pad
24, 44: 스템핀 25: 와이어24, 44: stem pin 25: wire
30: 감지부 31: 알코올센서30: detection unit 31: alcohol sensor
32: 펌프 45: 천공부32: pump 45: perforation

Claims (11)

  1. 알코올 성분을 감지하는 감지부를 구비한 음주측정기에 있어서,In the breathalyzer with a detector for detecting an alcohol component,
    피측정자가 입을 대고 날숨을 불어넣는 불대와, 상기 불대로부터 시료가스가 유입되는 시료가스유입구, 유입된 시료가스가 감지부 측으로 유출되는 시료가스유출구를 포함하는 시료가스통로를 구비하는 시료가스채취부; 및 Sampling gas collection including a sample gas passage including an inhalation in which the subject is breathed in and exhales, a sample gas inlet through which the sample gas is introduced, and a sample gas outlet through which the introduced sample gas flows out to the sensing unit; part; And
    상기 시료가스통로의 내부 공간에 배치된 히터;A heater disposed in an inner space of the sample gas passage;
    를 포함하는 것을 특징으로 하는 음주측정기. Breathalyzer characterized in that it comprises a.
  2. 제1항에 있어서,The method of claim 1,
    상기 히터는,The heater,
    상기 시료가스통로의 내부 공간에 배치된 절연체기판과, 상기 절연체기판에 형성된 발열체와, 상기 발열체와 전기적으로 연결되며, 상기 절연체기판을 지지하는 복수의 스템핀들을 구비하는 것을 특징으로 하는 음주측정기. And an insulator substrate disposed in the inner space of the sample gas passage, a heating element formed on the insulator substrate, and a plurality of stem pins electrically connected to the heating element and supporting the insulator substrate.
  3. 제2항에 있어서,The method of claim 2,
    상기 절연체기판에는 상기 절연체기판을 관통하며, 상기 발열체와 전기적으로 연결된 전극홀들이 형성되어 있으며, The insulator substrate has electrode holes penetrating the insulator substrate and electrically connected to the heating element.
    상기 스템핀들은 상기 전극홀들에 전기적으로 연결되어, 상기 발열체에 전력을 공급하는 것을 특징으로 하는 음주측정기. The stem pins are electrically connected to the electrode holes, characterized in that for supplying power to the heating element.
  4. 제3항에 있어서,The method of claim 3,
    상기 발열체에서 발생한 열이 주위로 전도되는 것을 방지하도록, 상기 절연체기판의 상기 발열체의 둘레에 상기 절연체기판을 관통하는 복수의 천공부들이 형성되는 것을 특징으로 하는 음주측정기.And a plurality of perforations penetrating the insulator substrate around the heating element of the insulator substrate so as to prevent the heat generated from the heating element from being conducted to the surroundings.
  5. 제2항에 있어서,The method of claim 2,
    상기 발열체와 상기 스템핀들이 와이어로 본딩되어 전기적으로 연결되는 것을 특징으로 하는 음주측정기.Breathalyzer, characterized in that the heating element and the stem pins are electrically connected by bonding with a wire.
  6. 제2항에 있어서,The method of claim 2,
    상기 발열체의 전기전도도 변화를 측정함으로써, 시료가스의 유입 여부를 측정하는 것을 특징으로 하는 음주측정기. Measuring a change in the electrical conductivity of the heating element, the breathalyzer, characterized in that for measuring the inflow of sample gas.
  7. 제1항에 있어서,The method of claim 1,
    상기 시료가스통로에는, 상기 시료가스유입구를 통해서 유입된 시료가스의 일부가 외부로 배출되도록 복수의 시료가스유출구가 형성된 것을 특징으로 하는 음주측정기. And a plurality of sample gas outlets are formed in the sample gas passage so that a part of the sample gas introduced through the sample gas inlet is discharged to the outside.
  8. 제1항에 있어서,The method of claim 1,
    상기 시료가스통로의 단면적은 상기 시료가스유입구 및 시료가스유출구의 면적에 비해 넓은 것을 특징으로 하는 음주측정기.And a cross-sectional area of the sample gas passage is wider than an area of the sample gas inlet and the sample gas outlet.
  9. 제2항에 있어서, The method of claim 2,
    상기 발열체는 스크린 프린팅에 의해서 형성되는 것을 특징으로 하는 음주측정기.The heating element is a breathalyzer, characterized in that formed by screen printing.
  10. 제1항에 있어서,The method of claim 1,
    상기 불대는,The inflation,
    피측정자의 날숨이 유입되는 날숨유입구, Exhalation inlet for exhalation of the subject,
    상기 시료가스유입구와 연결되어, 유입된 날숨의 일부를 상기 시료가스통로에 전달하는 날숨유출구, 및 Connected to the sample gas inlet, exhalation outlet for transferring a portion of the exhaled flow into the sample gas passage, and
    유입된 날숨의 일부를 외부로 배출하는 날숨배출구를 포함하는 것을 특징으로 하는 음주측정기.Breathalyzer characterized in that it comprises a exhalation outlet for discharging a part of the exhaled flow to the outside.
  11. 제10항에 있어서,The method of claim 10,
    상기 날숨유출구의 단면적은 상기 날숨배출구의 단면적에 비해서 넓은 것을 특징으로 하는 음주측정기.Breathalyzer is characterized in that the cross-sectional area of the exhalation outlet is wider than the cross-sectional area of the exhalation outlet.
PCT/KR2012/000359 2011-01-18 2012-01-16 Breath alcohol analyzer WO2012099365A2 (en)

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KR1020110004859A KR101182756B1 (en) 2011-01-18 2011-01-18 Breath Alcohol Analyzer

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