IWILDT/Aiwei Security is a high-tech enterprise in China that focuses on the research and development of security equipment, headquartered in Wuhan Optics Valley.

Wuhan Aiwei Technology Co., Ltd. mainly produces large-scale automobile container X-ray security scanning systems, nanowave nm millimeter wave millimeter wave terahertz THz human security scanning systems, digital human health assessment and diagnosis systems, IoT security big data cloud computing products, machine vision automatic image recognition X-ray security systems, remote explosive disposal robot X-ray scanning systems, CT tomography security scanning systems, security X-ray machines X-RAY SCAN SYSTEM, security detection doors safechk detectors, smart doors, handheld security detectors, desktop security detectors, mobile security detectors, underground security detectors, etc

Working principle

The IWILDT track mobile large-scale vehicle security inspection system utilizes the principle of radiation imaging, where the fan-shaped rays emitted by the radiation source penetrate the enclosed carriage and internal cargo, and are received by the detector on the other side. Due to the different densities of different parts of the object, the degree of absorption of radiation varies, and the strength of the signal output by the detector also varies. After image processing, the signals with different strengths are displayed on the computer screen, forming the outline and shape of the objects inside the vehicle. Through visual inspection, it can be seen that the enclosed carriage is loaded with objects.


Equipment composition

The IWILDT rail mobile large-scale vehicle security inspection system consists of a radiation source subsystem, a detector subsystem, a data acquisition and real-time imaging subsystem, an image and data management subsystem, a vehicle position sensing system, and a system operation monitoring subsystem. The main functions of each subsystem are as follows:

1Equipment casing, frame and ancillary facilities main frame, control cabinet, inspection station building, height and width limit pole, collision barrier, etc

2Distribution and lightning protection subsystem distribution system, circuit protection equipment, transformer equipment, lightning protection equipment, distribution equipment, circuit control equipment, etc

3 Ray source and control subsystem American VARIAN NDI-452X X-ray tube, source tank, and control linkage mechanism

4ray detection subsystem detector array, electronic system

5The data acquisition and acquisition subsystem converts optical signals into electrical signals

6Alarm and emergency stop subsystem sound and light indicators, emergency stop switches, etc

7Border security monitoring system cameras, license plate recognition system and software, etc

8Imaging and analysis subsystems Real time imaging, image analysis, database and archiving, etc

9 radiation detection and protection system includes radiation dose monitoring probes and related radiation shielding measures at multiple critical locations

10 amplification and intercom system detection system is equipped with an internal intercom system for intercom with the manual secondary security inspection room.

11 Light Truck Transport X-ray Detection System

Radiation source subsystem

The radiation source subsystem includes X-ray machine, X-ray high-voltage power supply, X-ray machine cooling device, collimator, shutter and driving device, all installed in the radiation source box.



(1) The relevant parameters of the X-ray machine are as follows:

X-ray source: rated current 10mA

Power supply: Power supply requirements: (220 ± 22) V, frequency (50 ± 1) Hz

Radiation dose: Main beam dose at a distance of 1m from the target center: 5000 μ Gy/h

Maximum penetration thickness: ≥ 350 mm thick steel plate

(2) The relevant technical parameters of the X-ray source room are as follows:

Cabinet size: 3700 x 1100 x 1900mm;

Cabinet inner wall: 1-2mm lead equivalent;

Collimator: 30mm thick lead drum with a 2mm wide uniform gap in the center;

Shutter: 20mm thick L-shaped lead shielded shutter.

 Detector subsystem


The detector subsystem receives radiation that passes through the inspected object, including the column and beam sections. The back of the detector is shielded with a J-shaped lead plate, with a width of approximately 655mm. The back of the detector column is protected with a 30mm lead plate, and the protection on both sides of the column is shielded with a 10mm lead plate. The lead plates are interlocked with each other; The crossbeam protection adopts 5mm lead plates, which are interlocked with each other.


Data acquisition and real-time imaging subsystem


The data acquisition and real-time imaging subsystem converts the detector output signal into a digital signal and feeds it into the image processing subsystem to establish a two-dimensional projection image of the object being tested on the computer screen.



Image and Data Management Subsystem


The image and data management subsystem consists of image processing and analysis, display of scanned images, and corresponding check-in information, helping inspectors analyze images and identify whether the inspected vehicle is violating regulations.


System operation monitoring subsystem


The system operation monitoring subsystem is used to monitor and control the operation status of the entire system, ensuring the safe and normal operation of the system.



X-ray machine: X-ray high-voltage power supply

X-ray cooling device: X-ray machine controller

Control cabinet: detector