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Sonar Monitoring System

1 system introduction

The sound ball linkage system is the latest security monitoring system developed by our company. Relying on the mature sound array signal processing technology and taking our 16 element array air sonar system as the carrier, the existing monitoring ball machine is upgraded, as shown in Figure 1 - 1. It mainly realizes the recognition and orientation of specific audio and controls the steering of the ball machine through onvif protocol, which can be adapted to the vast majority of network ball machines on the market. When abnormal sound signals are found within the monitoring range, respond in a very short time, locate the sound source, and guide the ball machine pan tilt to rotate to the direction of abnormal sound for inspection. Combined with the corresponding audio and video processing technology, it can achieve 360 ° all-round monitoring, and solve the problem of large monitoring blind area caused by unclear monitoring direction in the traditional security scheme.

 

Appearance

Product Size

 

    1. Pperformance index

    2. Industrial indicators

      Power supply range

      12V DC power supply

      Data transmission interface

      RJ45 100m network port

      System power consumption

      <200ma

      Operating temperature range

      -20 ° c~85 ° C

      Environmental adaptability

      Waterproof grade IP65

      Sensor index

      Signal to noise ratio

      58dB

      sensitivity

      -38dB

      Frequency Response

      100Hz~10KHz

      Directivity

      omnidirectional

      Array metrics

      Array volume

      205*205*30(mm)

      Array weight

      1.2Kg

      Array aperture

      200mm*200mm

      Number of array elements

      16

      Sensor type

      MEMS silicon microphone

      Sonar performance index

      Main lobe 3dB bandwidth

      19.39 ° (3000hz)

      Array gain

      seven point seven eight one five

      Maximum processing frequency

      4000Hz

      Angular resolution

      <1 °

      Horizontal spatial resolution

      <1600mm (measuring distance 1m)

      response time

      <50ms

      positioning error

      <500mm (measuring distance 1m, 1000Hz)

      Detection angle range

      0~360 ° omnidirectional

      Detection range

      Not less than 50m radius

      Array features

      Sound source target orientation

      Output direction information of sound source target (polar coordinates or azimuth)

      Sound source target location

      Output absolute position information of sound source target (known installation conditions)

      Voice recognition

      Identify the type of specific sound (sampling and training in advance)

      Sound enhancement

      Noise reduction, filtering, directional enhancement

      feature analysis

      Calculating the time-frequency characteristics of statistical sound source signals
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