您的位置: 首页 > 农业专利 > 详情页

METHOD AND APPARATUS FOR MEASURING BREATH ALCOHOL CONCENTRATION
专利权人:
ALCO SYSTEMS SWEDEN AB
发明人:
EVANS Nigel,WALLINGTON Leigh
申请号:
EA20130090860
公开号:
EA025809(B1)
申请日:
2010.12.20
申请国别(地区):
欧亚专利组织
年份:
2017
代理人:
摘要:
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 flow rate, the volume of the breath sample may be calculated, 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 flow rate and the fuel cell output signal over time. If the user stops blowing, flow 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.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

意 见 箱

匿名:登录

个人用户登录

找回密码

第三方账号登录

忘记密码

个人用户注册

必须为有效邮箱
6~16位数字与字母组合
6~16位数字与字母组合
请输入正确的手机号码

信息补充