long distance sound disperser

Long-distance sound dispersers are mainly used for anti-drug, anti-smuggling, anti-crossing, maritime anti-smuggling, public security, law enforcement, airport, port broadcasting, dispersion, etc.
Scope of application
★Applications in natural disasters
★Applications in peacekeeping during illegal assemblies, riots, and invasions
★Applications in preventing terrorist hostage-taking
★Coastal defenses Applications in maintaining border prison protection
1. Quickly notify and issue warnings to people and vehicles in the distance to clearly express intentions.
2. Issue warnings for emergencies (illegal assembly, commotion, unprovoked approach, invasion).
3. Subdue personnel who illegally intrude into territorial waters and emit unbearable noise waves.
4. Used for judicial detention, prison incarceration personnel control and protective patrol.
5. Used for communication and coordination at the rescue site of major natural disasters.
6. Prevent terrorists, hostage-taking and organized terrorist activities.
7. Prevent smuggling at the coastal border and maintain border harmony and balance.
Application of long-distance directional wave launcher
Example (1) New anti-riot weapons to deal with rioters
Example (2) Preventing terrorist attacks and obstacles to terrorist attacks
Legal organizations to hold illegal assemblies , interfere with residents' lives, hinder enterprise production, disrupt public order, and in severe cases, cause government agencies to stagnate, or even paralyze the political system and cause social unrest. During illegal gatherings on the way or at the scene, the government can use acoustic wave dispersors to make advance announcements, publicize policies and regulations, and impose criminal warnings. If that does not work, the government can increase the volume and use noise waves that are intolerable to human ears to force the gathering members to evacuate.
Example (4) Fight against sea robbers and protect the sea navigation
． The transducer array uses avant-garde technologies such as finite element method, electromechanical coupling analysis, and solid-fluid coupling analysis to establish a two-dimensional coherent superposition mathematical model, and adopts neural network nonlinear compensation control to effectively form the sound wave beam angle and achieve optimal focusing and orientation. And penetration effect
. The transducer unit uses new materials such as piezoelectric elastic materials and neodymium iron boron. It has a flextensional structure, high sensitivity, good impact resistance, and clear sound quality
. Ultrasonic modulation is completely different from traditional speakers that use a cylinder mechanism to excite air vibrations. Instead, the ultrasonic sensor generates highly directional ultrasonic signals. Based on the nonlinear effect of ultrasonic waves in the air, it is demodulated to produce highly directional audible sound
． Digital power amplification is highly efficient and energy-saving, small and light, reliable and durable
. Saving power supply
． System integration includes effective coupling between system levels, effective impedance matching between amplifiers and transducers, dynamic range adjustment of digital signal processing and digital power amplification, distortion correction, etc.
Examples of innovation
． The approximate square root algorithm and other algorithms, such as square root, double integral and square root, truncation and other algorithms are used for signal processing, and distortion correction, model equalization, special sound effect processing and other means are used for signal compensation
. Improved interval pulse modulation reduces the switching frequency requirements of power amplifiers and improves amplification efficiency
. The impedance matching network equalizes the carrier frequency and the electromechanical coupling frequency of the transducer
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