A rifled barrel scanning device

Abstract

The invention discloses a rifling barrel-shaped scanning device, and relates to the field of security inspection devices. The rifling barrel-shaped scanning device comprises a main frame, an azimuth rotation mechanism, a central mechanism, a computer and a lifting movement mechanism. The lifting movement mechanism comprises a fixing seat, a screw mounting seat, a guiding seat, a screw rod, a lifting sliding table, a servo motor a and a synchronous belt transmission device, and is used for driving the azimuth rotation mechanism and the central mechanism to lift. The azimuth rotation mechanism comprises a servo motor b which is connected with a square shaft. The center mechanism comprises a central vertical shaft which is connected with the square shaft. A number of antenna beams and radomebeams are arranged on the central vertical shaft in the axial direction. A number of transmitting antennas and receiving antennas are arranged between the antenna beams through antenna fixing plates.The computer is electrically connected with the transmitting antennas, the receiving antennas, the servo motor a and the servo motor b. The device has the advantages of compact structure, wide scanning range, high scanning efficiency, large scanning precision, high stability and high security inspection efficiency, and can be widely used in the field of security inspection.

Description

technical field [0001] The invention relates to the field of security inspection equipment, in particular to a rifled barrel-shaped scanning equipment. Background technique [0002] In recent years, with the frequent occurrence of terrorist incidents, especially in public places where people gather, how to quickly detect and alarm the knives, guns, explosives and other dangerous goods carried by terrorists is a major problem facing public security. problem. At present, the "metal door" security inspection method cannot exclude non-metallic dangerous goods such as ceramic knives and explosives, and requires security inspections to be searched, which leads to a series of problems such as extremely low efficiency and privacy violations. With the development of terahertz imaging technology, it can detect hidden objects through clothing and high-resolution imaging recognition, and terahertz photon energy is low, far smaller than the ionization energy of human skin, and will not ...

AI Technical Summary

Problems solved by technology

This makes the design of the terahertz antenna very difficult. At the same time, because the antenna has extremely strict requirements on processing accuracy, the processing of the terahertz antenna is difficult and the production cost is high.

In addition, the terahertz antenna needs to be matched with a corresponding number of expensive terahertz receivers, which makes the whole system bulky, heavy, and high in manufacturing cost, which limits the widespread use of the system

[0004] 2. There are a large number of loads such as terahertz transceiver antennas and receivers installed on the rotating vertical shaft. The moment of inertia is too large, and it is difficult to calibrate the dynamic and static balance of the rotating part.

In addition, the entire rotating part is large in size and complex in structure, and the influence of environmental load is obvious, so that the imaging system can only be scanned at a low speed state, which directly leads to a decrease in imaging rate and low efficiency.

[0005] 3. In the existing technology, the indirect drive method is adopted, and the gear meshing gap will affect the scanning accuracy and stability, resulting in poor final imaging effect and affecting the security personnel's rapid identification and judgment of hidden items

[0006] 4. In the existing technology, only one person can be scanned at a time, and the efficiency is low

For public places where people gather, in order to improve security inspection efficiency, only human body scanning security inspection equipment can be added, but the security inspection equipment itself is expensive, resulting in huge consumption of manpower and material resources

Moreover, the size of the security inspection equipment is large and requires a large space for installation, which makes the equipment unable to be widely used

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