Ranging system and mobile platform

A mobile platform comprises:

• a ranging system;
• and
• a vehicle body comprising a controller configured to communicate with the ranging system to receive a distance measured by the ranging system, and to control the vehicle body based on the distance,
• wherein the ranging system comprises:
• a plurality of lasers arranged in an arc shape,
• a receiver,
• a motor comprising a rotation shaft and a turntable, the turntable being installed on the rotation shaft of the motor,
• a mirror group including at least one first mirror being installed on the turntable,
• a coaxial optical lens group disposed between the mirror group and both the laser and the receiver,
• a holed mirror disposed between the coaxial optical lens group and both the laser and the receiver,
• a plurality of second mirrors disposed between the coaxial optical lens group and the laser, wherein the plurality of second mirrors form a “Z”-shaped optical path, and
• a processing circuit separately coupled to the laser and to the receiver,
• wherein the plurality of lasers are configured to emit laser light to the coaxial optical lens group,
• wherein the coaxial optical lens group is configured to shape the laser light into parallel laser light and transmit the parallel laser light to the mirror group,
• wherein the mirror group is configured to reflect the parallel laser light to a measured object,
• wherein the motor is configured to drive the turntable to move the at least one first mirror to adjust an emission angle of the parallel laser light from the at least one first mirror,
• wherein the coaxial optical lens group is further configured to focus the reflected light to the receiver,
• wherein the receiver is configured to receive the reflected light,
• wherein the processing circuit is configured to calculate a distance between the ranging system and the measured object based on the laser light and the reflected light, and
• wherein an optical path of the laser light between the holed mirror and the mirror group and an optical path of the reflected light between the mirror group and the holed mirror are coaxial.