| 摘要 |
The invention relates to a safety scanner for the securing of the environment of a vehicle, in particular of a driverless transport system, comprising a light transmitter, a light deflection unit for the deflection of the light into a protected field to be monitored, a receiver for the provision of received signals in dependence on light remitted at objects present in the field of view of the scanner, an evaluation unit for the evaluation of the received signals and of the incremental encoder signals and for the provision of a safety signal, a first input connected to a vehicle speed determination unit for the reception of first signals which are representative of a vehicle speed and comprising switchover means for the safe switching over between at least two different protected fields in dependence on the vehicle speed. To provide a safety scanner with which components can be saved and which is of simple construction, it is proposed that a second input is connected to the vehicle speed determination unit for the reception of desired speed signals of the vehicle and the vehicle speed determination unit has comparison means with which an actual speed can be compared with a desired speed on the basis of the first signals and of the desired speed signals and the safety signal can also be output in dependence on this comparison.
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