1.Structure

The HD-II Mobile Detection System is based on electromagnetic induction theory. It consists of detecting door, signal excitation-emission module, electromagnetic signal sensor, analog signal processing module, digital signal processing module, analysis & judgment alarm module and remote control system.

The system's working principles and the signal line are shown in fig. 1. The system is installed with 20 electromagnetic signal sensors and 10 signal processing units, which help the system take samples at high speed and in real-time, extract the features of electromagnetic signals and then analyze and judge these features and give alarms.

The system's structure is shown in fig. 2. The analog signal processing module and the digital signal processing module are installed in the crate which is on the top of the detecting door. The signal excitation-emission module and the electromagnetic signal sensor are installed on the both sides of the door, each side of which is with 8 sensors.  

The system magnifys and filters the weak signals to suppress the interference from the complex electromagnetic environment. These processed signals are analyzed with finite element analysis technology and the gradient survey technology. And then the system will extract the signal characteristic parameters from these processed data. Because different objects(including mobile phones) with specific electromagnetic identity characteristics, the system extracts and analyzes these characteristics to judge the detected person in the passageway with mobile or not.

The real-time operating state, the parameter querying & setting, the results of detection and the historical data can be operated in the remote control system.

2.Features

2.1 The core technology of this system is original;

2.2 Adopting finite element analysis technology and gradient survey technology;

2.3 Adopting adaptive signal amplification processing technology;

2.4 Adopting unique sensor technology, anti-interference, steady work,

high sensitivity;

2.5 Friendly interface between user and the machine, rich network management functions ;

2.6 Temperature-adaptive & self-compensation;

2.7 Continuously high-speed data collection & analysis;

2.8 With functions to suppress interference from the objects such as belt buckles, keys, watches, handbags, cigarettes, glasses, lighters, etc.

3. Where to Use

3.1 The meeting room, the sanctum;

3.2 The prison, the detention house, the addiction treatment centre;

3.3 Government offices;

3.4 The enterprises and the institutions with secrecy requirements.

4.Technical Specifications & Operating Instructions

4.1 External power supply : 220V；

4.2 Power frequency: 50/60HZ；

4.3 Power dissipation: 100W；

4.4 Total weight of the machine: 100kg；

4.5 The size of the machine's external（mm）：2220(H)×1000(W)×650(L);

The size of passageway（mm）：2000(H)×700(W)×650(L);

4.6 The accuracy rate of phone detection is 95% above;

4.7 Test frequency：5kHz~10kHz;

4.8 The detected participants are needed to fold their hands on the belt buckles, walking in the normal speed and posture;

4.9 When the participant is carrying a small handbag, they can put it up to their chest when getting through the passageway. If the handbag is with too much metal, then a manual inspection is needed.