| 摘要 |
A system where a sensor is placed in proximity to the nozzle of a hose to monitor pressure or other quantity. The system includes a communication link between the sensor and a remote station. Normally this is a radio link. Pressure values can be transmitted to a receiver and optional processor located near a pump. An operator can then adjust the pump to produce the desired pressure at the nozzle. Optionally, the processor can directly control the pump through a closed-loop feedback system. The communications link can use frequency or space diversity to combat fading. Radio diversity can be accomplished through the use of two or more channels. Any type of sensor can be mounted at the nozzle location. |
