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Breath test system

一种测试系统、传感器单元的技术，应用在测量装置、诊断记录/测量、仪器等方向，能够解决耗时、接口件昂贵等问题

Inactive Publication Date: 2015-06-24
AUTOMOTIVE COALITION FOR TRAFFIC SAFETY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to water condensation, the handling of the interface is expensive, time-consuming and presents an undesirable source of errors

Method used

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Embodiment Construction

[0017] The invention comprises both physical and functional features, both of which will become apparent from the appended claims and detailed description.

[0018] figure 1 is a schematic diagram (not drawn to scale) of one embodiment of the system 1 according to the invention. The system 1 may be constructed to be in a separate physical enclosure, or as part of an accessory, such as in a vehicle cabin. A test person 12 is shown located near the inlet area 4 of a sensor unit 5 equipped with a sensor element 8 which generates a signal corresponding to the ethanol concentration in the air flowing through the inlet area 4 . Means for actively conveying air through the sensor unit 5 are provided by a fan or pump 9, said means preferably comprising means for controlling the volume flow. The inlet area 4 comprises one or more openings into which air can flow freely or driven by a fan 9 . Preferably, a particle filter, for example made of a porous material, is contained in the in...

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PUM

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Abstract

The invention relates to a breath test system that is unobtrusive in that it does not require a person subjected to the system to take any other action to breath. It comprises a sensor unit (5) configured to sense the presence or concentration of a volatile substance, present in air flowing through a predefined inlet area (4), and to generate a signal corresponding to the concentration of said substance. There is also provided an apparatus (2, 3) configured to detect the presence of a person at a position in the vicinity of said input area, and having means for registering said presence, and further configured to respond to said presence by delivering an output. This said apparatus includes a unit configured to call for immediate attention of said person, upon said registration of the presence of said person, and a unit configured to provide instructions to said person to direct an expiratory air flow towards said inlet area (4). An analyzer (10) for the determination of breath substance concentration of said person is also provided, the determination being based on said signal corresponding to the substance concentration.

Description

technical field [0001] The present invention relates to a system for unsupervised sensing of the presence / concentration of a substance such as ethanol in the exhaled breath of a person. Background technique [0002] Breath alcohol concentration (BrAC) is related to blood alcohol concentration (BAC), and its approximate relationship is BrAC[mg / l]=0.5×BAC[mg / g]. Other substances have different coefficients. [0003] State-of-the-art regulated breath tests are administered by police to deter drunk driving. Unsupervised testing with alcohol interlocks in vehicles is also increasingly being used for the same purpose. Sensor technologies include catalytic semiconductors, fuel cells, and infrared spectroscopy. Performance with respect to accuracy, specificity, environmental immunity and response time is very variable between the different devices available on the market. The device used for the breath test includes a sensor element that provides a signal indicative of BrAC and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504G01N33/497
CPCG01N21/3504G01N2001/2244A61B5/0059A61B5/082A61B5/0836A61B5/4845G01N33/4972B60K28/06
Inventor B·赫克L·特纳尔兹L·史密斯A·凯斯多特安德森
Owner AUTOMOTIVE COALITION FOR TRAFFIC SAFETY
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