发明名称 |
ACTUATION AND EVALUATION CIRCUIT, MEASURING DEVICE AND METHOD FOR MEASURING THE CONCENTRATION OF A GAS |
摘要 |
The invention relates to an actuation and evaluation circuit for a laser diode (1) and a photodiode (3) for determining the concentration of a gas. The laser diode can generate light in the range of an absorption line of the gas. The circuit comprises a driver (10, 11, 12, 13) for generating a driver signal (17) for the laser diode (1), an assembly (8, 9) for generating a reference signal (20), and a subtractor (5) for subtracting the reference signal (20) from the signal (21) supplied by the photodiode. The invention further relates to a measuring device for determining the concentration of a gas by way of such an actuation and evaluation circuit. Finally, the invention relates to a corresponding method. |
申请公布号 |
WO2010124685(A2) |
申请公布日期 |
2010.11.04 |
申请号 |
WO2010DE50018 |
申请日期 |
2010.04.14 |
申请人 |
CAREFUSION GERMANY 234 GMBH;SCHERER, HELMUT;SCHRADER, DIETER;MENNINGER, STEFAN |
发明人 |
SCHERER, HELMUT;SCHRADER, DIETER;MENNINGER, STEFAN |
分类号 |
G01N21/27 |
主分类号 |
G01N21/27 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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