| 摘要 |
A method and apparatus for transmitting information indicative of an output signal of a sensor (20) to a remote location. The method comprises the steps of transmitting a first pulse (48a), a second pulse (48b) and a third pulse (48c) to a receiving circuit (50) at times that are ratiometrically related to the output signal of the sensor. The receiving circuit receives the first, second and third pulses and computes a number indicative of the value of the output signal of the sensor as a function of the times at which the three pulses are received. In the preferred embodiment, the sensor is powered by a battery (12) and transmits the first, second, and third pulses to the receiver circuit as light pulses conveyed on a fiber-optic cable. |
