首页>
外国专利>
DIAGNOSTIC CIRCUITRY FOR POWERED SENSOR MULTIPLE UNIQUE FAULTS DIAGNOSTICS AND RESISTIVE FAULT TOLERANT INTERFACE TO MICROPROCESSOR
DIAGNOSTIC CIRCUITRY FOR POWERED SENSOR MULTIPLE UNIQUE FAULTS DIAGNOSTICS AND RESISTIVE FAULT TOLERANT INTERFACE TO MICROPROCESSOR
展开▼
机译:功率传感器的多个唯一故障诊断电路和与微处理器的容错接口
展开▼
页面导航
摘要
著录项
相似文献
摘要
A sensing system includes circuitry having a diagnostic interface for a powered sensor. Responsive to sensing signals, the circuitry is operable to produce a DC level that is defined by operating or fault conditions. The fault conditions include an open voltage supply, an open sensor power return signal, open communication signal(s), series resistance in a communication signal, fault resistance to ground on the communication signal and fault resistance to a voltage source on the communication signal. The circuitry includes a fault tolerant interface between a wire harness at an output of the powered sensor and a digital input port of a microprocessor for the purpose of un-ambiguous fault detection when distortion of sensor information occurs or when loss of sensor information occurs, and wherein the microprocessor diagnoses a fault as defined by the DC level of the analog signal monitored at the communication signal input to the microprocessor.
展开▼