LDS - Laser Ranging Sensor
IMU - Inertial Measurement Unit, used to perceive changes in the robot's motion state and posture. LDS testing involves moving the mobile host fixture towards the front whiteboard direction to test the signal feedback from the laser module.
Laser obstacle avoidance is the use of different obstacles placed in front of the host to detect the signal of the laser module
IMU testing involves rotating the host fixture and reading the IMU signal
