| 摘要 |
An obstacle detection system for protecting a frame upper end portion and laser scanning device of a self guided vehicle from damage by external objects includes a device for delivering a light signal in a direction along a preselected elevationally oriented axis and a device for receiving a reflection of the delivered light signal and delivering a condition control signal in response to receiving the reflected light signal. A supporting assembly is connected to the frame upper end portion and a guide frame is connected to the supporting assembly and defines a plane passing through the elevationally oriented axis. A reflecting member is supported on the guide frame and a connecting device connects the reflecting member to the support assembly and maintains the reflecting member for movement between a first position at which the reflecting member reflects the light signal towards the receiving device and a second position spaced from the first position at which the reflecting member is free from reflecting the light signal towards the receiving device.
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