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5000M Ultra Long Range Directional Acoustic Device For Police Use
The powerful directional acoustic beam is widely used to disperse illegal crowds in the most humane way, so it is the best alternative for anti-illegal rally and invasion. In comparison with the traditional loudspeaker system, the long range directional acoustic device is a revolutionary technology of extended coverage, enabling broadcasts to be heard and understood clearly over long distances from hundreds of meters up to one kilometer, even across buildings. It has great deterrent power to force the audience to leave the forbidden area; besides, it has accurate orientation capacity, can be aimed at a certain angle to emit unbearable irritating voices, but brings no uncomfortable feelings at other angles.
Main Applications:
For anti-drug, anti-smuggling and anti-cross border at the frontiers, anti-smuggling at sea, public security and law enforcement, broadcasts and dispersion at airports and sea ports etc.
1. Issue prompt notifications and warnings to the people, vehicles in some far distance
2. Issue warnings for emergencies (illegal rallies, riots, unprovoked approach and invasion)
3. Issue unbearable noises to the illegal invasion ships at the territorial waters
4. To control the judicial detainees and prisoners, and to patrol
5. For communication and coordination at the site of severe natural disaster rescue
6. To prevent terrorists, hostages and organized terrorist activities
7. To prevent illegal entry or smuggling across borders
Key Technologies:
1. Energy transducer array: adopt the advanced technologies of finite element method, electromechanical coupling analysis, solid-fluid coupling analysis, build 2D mathematical model of coherent superposition, use nonlinear neural network compensation control, effectively forming the sound wave bunching angle, to achieve the best focus, orientation and penetration effect;
2. Energy transducer unit: use such new materials as piezoelectric elastic materials, NdFeB, and bending structure to achieve high sensitivity, good impact resistance, and vocal clarity;
3. Ultrasonic modulation: in contrast to the traditional loudspeakers using cylinder mechanism to stimulate air vibration, the directional acoustic device adopts ultrasonic sensor to produce highly oriented ultrasonic signal, which is demodulated to get high directional audible sound by the nonlinear effect of ultrasonic wave in the air.
4. Digital power amplifier: energy-efficient, compact and lightweight, reliable and durable;
5. Low power requirement
6. System integration: effective coupling between various levels of the system, effective impedance matching between the amplifier and transducer, dynamic range adjustment of digital signal processing and digital power amplifier, distortion correction etc.
Technical Specifications:
Power consumption: 1KW (peak)
Input power: AC220V/50Hz
Maximum sound pressure level: 160dB @1M (instant)
Sound beam angle: +/-15°@ 2.5KHz
Dispelling distance: 150M - 200M
Broadcasting distance: 3000M - 5000M
Size: 750x750x410mm
Weight: 70Kg
Hand-held microphone audio output
Recorded audio MP3 file output
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