发明名称 |
Heater drive circuit and drive method for a gas sensor |
摘要 |
A method and device for driving a gas sensor includes a three-point circuit determining a temperature of a gas sensor having a resistive heating element by determining a measuring current with a measuring resistor flowing through the resistor in a measuring phase. The three-point measurement makes it possible to determine accurately the line resistance of an incoming line branch, which can also be used approximately for the line resistance of another incoming line branch. Naturally, the tap may also be provided on the incoming line side.
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申请公布号 |
US6916415(B2) |
申请公布日期 |
2005.07.12 |
申请号 |
US20020156481 |
申请日期 |
2002.05.28 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
WALDE TIM |
分类号 |
G01N27/419;G01N27/406;G01N27/416;(IPC1-7):G01N27/407;H05B1/02 |
主分类号 |
G01N27/419 |
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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