发明授权
US06901336B2 Method and apparatus for supplying power, and channeling analog measurement and communication signals over single pair of wires
失效
用于提供电力的方法和装置,以及通过单根导线引导模拟测量和通信信号
- 专利标题: Method and apparatus for supplying power, and channeling analog measurement and communication signals over single pair of wires
- 专利标题(中): 用于提供电力的方法和装置,以及通过单根导线引导模拟测量和通信信号
-
申请号: US10404180申请日: 2003-03-31
-
公开(公告)号: US06901336B2公开(公告)日: 2005-05-31
- 发明人: Curtis Alan Tesdahl , David T. Crook , Kevin G. Chandler
- 申请人: Curtis Alan Tesdahl , David T. Crook , Kevin G. Chandler
- 申请人地址: US CA Palo Alto
- 专利权人: Agilent Technologies, Inc.
- 当前专利权人: Agilent Technologies, Inc.
- 当前专利权人地址: US CA Palo Alto
- 主分类号: G01R19/00
- IPC分类号: G01R19/00 ; G08C19/00 ; H04B3/46 ; H04B3/50 ; H04B7/005 ; H04L25/02
摘要:
A novel technique for transferring power, measurement signals, and communication signals between two electrical devices over a single wire pair is presented. A host device supplies power to a sensor device over the wire pair. The sensor device obtains A/C signals by modulating the current component of the power signal on the wire pair. The host device de-modulates the current component of the power signal on the wire pair to recover the A/C measurement signals. The sensor device generates a serial bit stream containing sensor communication signals, and modulates it with either the voltage-or current-component of the power signal present on the wire pair. The host device appropriately de-modulates the power signal to recover the serial bit stream containing the sensor communication signals.