Detection system and detection method for sensors of robot

A detection method of robotic sensors comprising:

• initializing a detection operation;
• reading three sets of detection signals generated by a first set of sensors and a third set of sensors at a motor side of a motor, and a second set of sensors at a power output terminal;
• converting the three sets of detection signals into a first angle, a second angle and a third angle of the motor in rotation;
• arranging the first angle, the second angle and the third angle in a descending order, with large angle a>medium angle b>small angle c;
• computing an angle difference D1=a−b and an angle difference D2=b−c;
• if a difference between the angle differences is less than a first predetermined standard deviation C1, that is, (D1−D2)<C1, determining that the first set of sensors, the second set of sensors and the third set of sensors are all normal;
• if the difference between the angle differences is not less than the first predetermined standard deviation C1, determining at least one member of a group comprising the first set of sensors, the second set of sensors and the third set of sensors is abnormal;
• when the abnormal set of sensors is not in use, continuing to operate the robot normally;
• and upon detecting two or more sets of sensors being abnormal, turning off a power of the robot, and shutting down operations of the robot.