Urban surveillance system for the Internet of Things comprising a support device (100), a mounting device (200), an energy saving device (300), a cleaning device (400) and a camera device (500), with the cleaning device (400) for cleaning the camera device (500), where:the energy saving device (300) a support rod (301),a wire rod (303),includes a second solar panel (304) and a connecting block (105), with the bottom of the support rod (301) connected to the top of the mast (102), with a side area of the connecting block (105) with a round hole, with an end of the wire rod (303) mounted in the round hole, where the second solar panels (304) are all installed on the outer surface of the wire rod (303);the cleaning device (400) includes a support plate (402), a rotating wheel (403) and a first gear (404), with one end of the rotating wheel (403) connected to a side surface of the support plate (402), with the other end of the rotating wheel (403) rotating with an end of the first gear (404); andthe camera device (500) a camera (501),one torque cell (502),a second gear (503),a U-shaped rod (504),includes a cross-bar (103) and a second fixed cylinder (205), with a side area of the second gear (503) with a first hole, with an end of the cross-bar (103) mounted in the first hole, with an end of the rotating speed (502) rotating with an end of the second gear (503), where the lower surface of the camera (501) is connected to the other end of the torque (502), with a second hole at the side of the second fixed cylinder (205), where the U-shaped bar (504) is mounted in the second hole.
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