| 摘要 |
The proximity warning system detects objects in the path of a vehicle as the vehicle manoeuvres. The system has sensors placed around the vehicle which transmit radio signals to a receiver in a display unit. The display unit generates a visual and/or an audible indication of the distance of the detected object to the vehicle. The audio warning may be in the form of a buzzer or beeps that get faster as the object gets closer and become a continuous tone at a predetermined distance. The visual warning may be in the form of series of lights or LEDs such that the number lit increases as the object approaches the vehicle and all the lights are lit at a predetermined distance. The display unit may be a portable handheld unit with it own battery power supply. The display unit may also be able to be connected via a cable if the batteries fail. The sensors and transmitters may be permanently or temporarily mounted on the vehicle. The vehicle may be a trailer or caravan. |
