Three-dimensional imaging security gate servo control device

Abstract

The invention relates to a three-dimensional imaging security gate servo control device. The device comprises a servo mechanism, a measuring feedback mechanism and a servo controller, wherein the the servo mechanism comprises an alternating current servo motor (1), a motor driver (2), a power supply adapter (3), a speed reducer (4), a belt wheel (5) and a load frame (6); the measuring feedback mechanism comprises a grating ruler (7) and a photoelectric switch (8); the servo controller comprises an interactive communication module, a signal collecting module, a self-checking correction controlmodule and a scanning curve control module of the servo mechanism; according to the invention, the self-checking correction and working scanning function are realized through coordination control of the servo controller; the zero position can be calculated by using the load frame under a self-checking correction instruction and the load frame can be accurately set to zero at a stable speed; and the load frame can move along a set curve track and operate stably under the working scanning instruction so that the imaging index requirements of the three-dimensional security gate system can be assured.

Description

technical field [0001] The present application relates to the field of servo control, in particular to a three-dimensional imaging security door servo control device. Background technique [0002] The 3D imaging security gate is suitable for security projects in special occasions such as airports, subways, banks, and large-scale events. It uses microwave imaging technology from different angles to form a 3D imaging image of the target object to detect whether there are dangerous objects, so it needs to be equipped with servo control. The system controls the movement trajectory of the load frame equipped with the microwave antenna transceiver module. In order to ensure the imaging quality and detection speed of the security door system, higher requirements are put forward for the running speed, running curve and stability of the load of the servo control system. [0003] The public report relevant to the present invention has: " design and realization of novel kiosk type met...

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Problems solved by technology

[0003] The public report relevant to the present invention has: " design and realization of novel kiosk type metal detection system " (" security science and technology ", the 4th issue in 2008) has introduced the control method of the servomotor that utilizes CPLD to realize in the article, and its main control The object is a bulletproof glass door in a double-door pavilion structure, which only needs to be controlled to open and close, and has no special requirements for running speed and running track. During the working process, the load frame returns to zero at a steady speed and accurately, and it cannot meet the index requirements of the 3D security door system imaging

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