发明授权
- 专利标题： Mass-flow sensor heating element protection method and apparatus
- 专利标题（中）： 质量流量传感器加热元件保护方法及装置
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申请号： US10786460申请日： 2004-02-26
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公开(公告)号： US07084378B2公开(公告)日： 2006-08-01
- 发明人: Joseph R. Griffin , Chris Ganseman , Patrick Van De Voorde , Nelson R. Burkholder , Stephen M. Geyer
- 申请人： Joseph R. Griffin , Chris Ganseman , Patrick Van De Voorde , Nelson R. Burkholder , Stephen M. Geyer
- 申请人地址： US PA Allentown US MI Fenton
- 专利权人： Mack Trucks, Inc.,Epiq, Sensor-Nite USA, Inc.
- 当前专利权人： Mack Trucks, Inc.,Epiq, Sensor-Nite USA, Inc.
- 当前专利权人地址： US PA Allentown US MI Fenton
- 代理机构： Rothwell, Figg, Ernst & Manbeck, PC
- 主分类号： H05B1/02
- IPC分类号： H05B1/02
摘要：
A heating element protection apparatus for a mass-flow sensor may include a heating element disposed in a gas, a gas temperature sensor disposed in the gas to sense a temperature of the gas, a slope detector to measure a slope of the temperature as power is supplied to the heating element, and a heating element controller to supply power to the heating element to replace heat dissipated by the gas. The heating element controller may detect a temperature of the heating element and may supply power to the heating element based on the heating element temperature and the gas temperature, and the power may be switched off for a predetermined period of time if a magnitude of the slope is greater than a reference magnitude.
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