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Exhalation measurement device and control method therefor
专利权人:
发明人:
Junichi Hyohgo,Takeshi Ohsora,Toru Kawamoto
申请号:
US14891964
公开号:
US09931058B2
申请日:
2014.05.21
申请国别(地区):
US
年份:
2018
代理人:
摘要:
Certain implementations relate to an exhalation measurement device that is used in checking pulmonary function, diagnosing asthma, and may perform zero point correction accurately even when there is disturbance. The exhalation measurement device may comprise a flow regulator. The flow regulator comprises a first offset adjuster that puts an exhalation inflow component and an exhalation outflow component in a separated state and performs first offset adjustment of an inflow pressure sensor and an outflow pressure sensor, a voltage difference detector that puts the exhalation inflow component and the exhalation outflow component in a linked state and detects an output voltage difference after the first offset adjustment of the inflow pressure sensor and the outflow pressure sensor, and a second offset adjuster that uses the output voltage difference to perform second offset adjustment of the inflow pressure sensor.
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