A system and method for reducing vibration in a dome camera security
system is provided in which the heat produced by the motors is reduced as
well. The dome camera system is equipped with an acceleration detecting
circuit disposed in close proximity to the camera. The acceleration
detecting circuit has an accelerometer for detecting accelerations in any
of three directions (i.e., X-axis, Y-axis and Z-axis). As a vibration is
induced on the camera by external forces, such as wind or traffic, the
acceleration detection circuit detects accelerations indicative of the
vibrations and in proportion to the magnitude of the vibration on the
camera. A controlling circuit adjusts the holding current of the motors
in response to the detected accelerations, thereby increasing the ability
of the motors to maintain a particular camera position. When vibrations
are detected to be minimal or not present, the holding current can be
reduced thus reducing heat production by the motors.