Pre-calibrated replaceable sensor module for a breath alcohol testing device

摘要

The present invention describes a replaceable breath alcohol sensor module that can be replaced with a new pre-calibrated breath alcohol sensor module or re-calibrated. The breath alcohol sensor module requiring calibration can be removed from the body of a Breath Alcohol Testing Device (commonly called “breathalyzer” or “breathalyzer”). The breath alcohol sensor module can be separately calibrated for accurate calculation of “percent blood alcohol concentration” (% BAC) based on breath air samples and then re-installed into the breath alcohol tester or the old breath alcohol sensor module can be replaced with a new pre-calibrated breath alcohol sensor module. The present invention improves upon and/or replacing the current method of re-calibration at a breathalyzer service center.

主权项

1. A pre-calibrated replaceable alcohol sensor module, comprising:
a printed circuit board (PCB); an alcohol sensor configured to receive a breath air sample and to measure blood alcohol concentration (BAC) based on analysis of the breath air sample; and a circuitry mounted on the PCB and configured to transmit measured BAC from the alcohol sensor to a signal processing unit of a breathalyzer and configured to transmit pre-calibrated data of the alcohol sensor from a non-volatile memory to the signal processing unit of the breathalyzer to provide measurement of the breath air sample; and wherein the pre-calibrated replaceable alcohol sensor module is installable in the breathalyzer to replace an existing pre-calibrated replaceable alcohol sensor module in the breathalyzer after being used for a predetermined number of times.