基本信息:
- 专利标题： 测量呼气酒精浓度的方法及装置
- 专利标题（英）：Method for measuring breath alcohol concentration and apparatus therefor
- 申请号：CN201380032765.7 申请日：2013-06-18
- 公开(公告)号：CN104487844A 公开(公告)日：2015-04-01
- 发明人： 奈杰尔·埃文斯 , 利·沃林顿
- 申请人： 艾可系统瑞典公司
- 申请人地址： 瑞典耶尔费拉市摩尔巴克瓦根1号
- 专利权人： 艾可系统瑞典公司
- 当前专利权人： 艾可系统瑞典公司
- 当前专利权人地址： 瑞典耶尔费拉市摩尔巴克瓦根1号
- 代理机构： 北京三聚阳光知识产权代理有限公司
- 代理人： 王惠
- 国际申请： PCT/SE2013/050722 2013.06.18
- 国际公布： WO2013/191634 EN 2013.12.27
- 进入国家日期： 2014-12-19
- 主分类号： G01N33/497
- IPC分类号： G01N33/497
The present invention relates to a method and apparatus for measuring breath alcohol concentration of a user. A flow of an expired breath sample is passed through a fuel cell sensor giving an output signal proportional to the amount of alcohol present in the breath sample. By measuring the pressure, the volume of the breath sample may be calculated by integrating the pressure over the time of expiration of the breath sample, whereas the breath alcohol concentration is calculated based on the fuel cell output signal. Both the sample volume and the breath alcohol concentration values are continually updated by integrating the measured instantaneous pressure and the fuel cell output signal over time, irrespective of the breath sample volume. When the user stops blowing,volume compensation is performed to obtain a compensated fuel cell output signal using a stored calibration volume. Hence, an improved method for accurately measuring the breath alcohol concentration of a test person is achieved, capable of handling varied expired volumes of breath,which obviates the need for a sampling mechanism.
公开/授权文献:
- CN104487844B 测量呼气酒精浓度的方法及装置 公开/授权日：2016-06-01