Invention Grant
US07797982B2 Personal breathalyzer having digital circuitry 有权
具有数字电路的个人呼吸机

Personal breathalyzer having digital circuitry
Abstract:
The present invention relates to a portable, personal breath tester device for testing the blood alcohol content of the user of the device. The breath tester comprises a circuit board, wherein a sensor, a liquid crystal display, and a processing unit are installed on and electrically connected to the circuit board. The processing unit receives a voltage signal from the sensor representing the blood alcohol content of the user and converts the voltage signal to a precise value that is displayed on the liquid crystal display.
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