| 摘要 |
A fail-safe electrical control system in the form of a sensor loop ( 24 ) is provided. The sensor loop ( 24 ) includes any number of sensor units ( 22 ) coupled in series. Each sensor unit ( 22 ) includes a local power source ( 26 ), a local sensor ( 14 ), and a local indicator controller ( 30 ). The local power source ( 26 ), local sensor ( 14 ), and local indicator controller ( 30 ) are coupled in series within the sensor unit ( 22 ) and the sensor loop ( 24 ) to form a closed circuit ( 40 ) that does not require a central controller or the performance of loop configuration activities. The local power sources ( 26 ) distributed throughout the sensor loop ( 24 ) within the sensor units ( 22 ) are all isolated from the earth. In one preferred embodiment, the sensor loop ( 24 ) controls the movement of solar collectors ( 12 ) into wind stow positions when high wind ( 16 ) conditions occur. |
