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Scenario: a large logistics center
Background: the logistics industry is developing rapidly, and safety is crucial in the logistics process. The large logistics center handles a large number of goods from all over the world every day, including electronic products, daily necessities, food and other types, so a comprehensive cargo security inspection is essential to prevent the mixing of dangerous goods or contraband.

Application equipment: a large logistics center selected the X-ray security inspection machine produced by Shanghai Fangchun mechanical equipment Co., Ltd. With high resolution, high sensitivity and powerful image processing capability, it can accurately identify the internal structure and composition of goods and effectively detect dangerous goods or contraband. For example, it can clearly distinguish the outline of small knives or prohibited chemicals hidden in the package.

Application process:
Equipment installation and commissioning
After installation and commissioning, the logistics center has conducted performance tests such as X-ray penetration, image clarity, and equipment stability to ensure that the normal operation of the equipment meets the security inspection requirements. For example, during the test, it was found that the image definition was slightly poor when detecting small objects, and the problem was solved by adjusting the parameters. After testing, the detection accuracy of the equipment for common dangerous goods reached more than 98%.

Security inspection process
After the arrival of the goods, they shall be preliminarily classified and sorted out.
Place one by one on the conveyor belt of the security inspection machine to start the security inspection. The security inspection machine can scan goods in all directions to generate clear images. Originally, it can detect 200-300 goods per hour. After using the security inspection machine, it can detect 400-500 goods per hour, and the security inspection efficiency has increased by about 60%. The staff can identify dangerous goods or contraband through the observation image of the monitor. If suspicious items are found, they shall be further handled immediately, such as unpacking inspection, isolation, etc.
Image processing and recognition
The advanced image processing system automatically analyzes and identifies the scanned image, and automatically marks abnormal areas, such as abnormal shape and color, to remind the staff. The staff carefully checked and judged according to the prompts, and the false alarm rate of the system was about 2%, which could be effectively eliminated through manual review.

Records and reports
The security inspection results are automatically recorded, including cargo information, security inspection time, security inspection results, etc.
The logistics center regularly generates security inspection reports, summarizes and analyzes security inspection work, and provides data support for subsequent security management.

Possible problems and Solutions
Equipment failure: if the X-ray source fails, the equipment will stop scanning and give a fault prompt. The logistics center is equipped with simple spare parts, which can be quickly replaced by professional maintenance personnel. At the same time, a maintenance agreement has been signed with the manufacturer, which can respond to emergency maintenance needs within 24 hours.

High false positive rate: false positive may occur when the package of goods is too complex or the internal items are placed irregularly. By optimizing the image processing algorithm and conducting more professional image recognition training for staff, the false positive rate can be effectively reduced.

Comparison and application scenarios of security inspection machine and metal detector
X-ray security inspection machine can detect a variety of types of dangerous goods, including non-metallic contraband, such as drugs, explosives, etc., but the operation is complex and X-ray is harmful to human body and goods. It is suitable for scenes requiring comprehensive inspection of the interior of goods, such as logistics center, airport checked baggage security inspection, etc.
The metal detector is simple to operate and can only detect metal objects. It is suitable for the simple metal object screening of personnel, such as the entrance security check of schools, stadiums and other places.

Maintenance and servicing requirements
After daily use, the exterior of the security inspection machine shall be cleaned to remove dust and stains.
Check the working status of the X-ray generator regularly (once a month) to ensure that the ray intensity is stable.
Thoroughly clean and calibrate the internal detector and conveyor belt every six months to ensure image quality and accuracy of transmission.

Operation training requirements
The staff need to receive basic training on the operation process of the security check machine, including the basic operations such as the start, stop and image viewing of the equipment.
Special training on image recognition should be conducted to understand the characteristics of common dangerous goods and contraband on the image, so as to improve the accuracy of security inspection.