发明授权
US07834307B2 Pulse width modulation output type sensor circuit for outputting a pulse having a width associated with a physical quantity
有权
用于输出具有与物理量相关联的宽度的脉冲的脉宽调制输出型传感器电路
- 专利标题： Pulse width modulation output type sensor circuit for outputting a pulse having a width associated with a physical quantity
- 专利标题（中）： 用于输出具有与物理量相关联的宽度的脉冲的脉宽调制输出型传感器电路
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申请号： US12010217申请日： 2008-01-22
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公开(公告)号： US07834307B2公开(公告)日： 2010-11-16
- 发明人: Yukihiko Tanizawa
- 申请人： Yukihiko Tanizawa
- 申请人地址： JP Kariya
- 专利权人： DENSO CORPORATION
- 当前专利权人： DENSO CORPORATION
- 当前专利权人地址： JP Kariya
- 代理机构： Posz Law Group, PLC
- 优先权： JP2007-014125 20070124
- 主分类号： H01L31/00
- IPC分类号： H01L31/00
摘要：
A sensor circuit includes an analog-to-digital converter, a control circuit, a calculation circuit, and a pulse width modulation converter. The analog-to-digital converter converts an electric signal associated with a detected physical quantity to sensor data by sampling the electric signal a predetermined sampling number times per a predetermined sampling section. The control circuit determines the sampling number based on a magnitude of the electric signal. The calculation circuit calculates an average value of all the sensor data per the sampling section. The pulse width modulation converter generates a pulse width modulation signal having a pulse width corresponding to the average value.
公开/授权文献
- US20080174450A1 Pulse width modulation output type sensor circuit 公开/授权日：2008-07-24