Light emitting device, distance measuring device and mobile platform

A distance measuring device, comprising:

• a light emitting device configured to emit laser pulse signals in sequence, the light emitting device including
• at least two laser emission circuits, each of the laser emission circuits including a power supply, a laser emitter, an energy storage circuit, and a control circuit,
• in each of the laser emission circuits, the control circuit being configured to turn on the energy storage circuit and the power supply in the laser emission circuit in a first period of time for the power supply to store energy in the energy storage circuit;
• the control circuit further being configured to turn on the laser emitter and the energy storage circuit in the laser emission circuit in a second period of time for the energy storage circuit to supply power to the laser emitter for the laser emitter to emit a light pulse signal;
• and
• two or more laser emission circuits sharing the power supply;
• at least two detection circuits respectively corresponding to the at least two laser emission circuits, wherein each detection circuit includes:
• a photoelectric conversion circuit configured to receive at least part of an optical signal of the laser pulse signal emitted by the corresponding laser emission circuit reflected by an object, and convert the received optical signal into an electrical signal;
• a sampling circuit configured to sample the electrical signal from the photoelectric conversion circuit to obtain a sampling result;
• and
• an arithmetic circuit configured to calculate a distance between the object and the distance measuring device based on the sampling result.