| 摘要 |
A controller (30 see fig 1) for a vehicle trailer (10 see fig 1) is adapted to control components or at least one system on the trailer (10) and to sense when the trailer (10) is hitched up to a road going tractor unit. The sensing means 34a-34c determine whether the wailer is umbilically connected. Preferably when an air supply line 38 and an electrical supply line 36 are connected, the controller (30) provides power and a control signal to a system comprising anti-lock brakes, proximity sensors 22, indicators 24, an audible warning device 20, telemetry, GPS tracking or height control. The invention facilitates the functioning of the trailer (10) with different tractor units. |
