>Product Introduction
The wireless distributed analysis system is used to collect noise and vibration data. The system consists of the acquisition & processing terminal(noise or vibration), the local control terminal, the remote database storage and the display terminal.
The acquisition & processing terminal(noise or vibration) includes acoustic sensor (or acceleration sensor), signal acquisition module, signal processing module, device internal storage module, power supply module, transmission module (4G / lora /bluetooth/other ways).
The acquisition & processing terminal(noise or vibration) begin to collect data(the information of the noise or vibration) after receiving the local control terminal’s instructions. It use its sensors to collect data firstly, and transform these data into electrical signals. And then, these electrical signals through the signal amplifier and the DAC(digital to analog converter), become digital signals. Finally, these digital signals enter into the signal processing module to computing, and then, this module transmits the calculation results to the remote database storage through 4G/lora/bluetooth or other ways.
>System Schematic Diagram
>System Features
The wireless high-precision test scheme of the system has changed the traditional single-point test form, broken through the limitation of test location and test time, and has the advantages of high accuracy, synchronization, ease of use and flexible configuration.
1. Wireless transmission.
2. Rapid deployment.
3. Reliable data.
4. Long-distance transmission.
5. Local storage of original data.
6. One-click report function
7. Database management.
>Technical Parameter
| Sensor | 1/2'' Type Ⅰ Capacitive Free Field Microphone |
Dynamic Range 17~136dB |
Frequency Range 10Hz~20kHz |
Sensitivity 50mV/Pa |
Frequency Weight | Frequency Weight：A、Z |
Sampling Rate | 25.6kHz / 44.1kHz |
Sampling Precision | 24bits |
Power Supply Mode | Battery Powered，Local Storage Lasts 8 Hours |
Acquisition & Processing Terminal (Noise) | Storage | Built-in 16GB SD Card, Expandable To 32GB |
| Sensor | Three-way Capacitive Acceleration Sensor |
Dynamic Range 0.5Hz~5kHz |
Sensitivity 500mV/g |
Measurement Range 10g |
Sampling Rate | Maximum 25.6kHz, Multiple Files Can Be Set |
Sampling Precision | 16bits |
Power Supply Mode | Battery Powered，Local Storage Lasts 16 Hours |
Acquisition & Processing Terminal (Vibration) | Storage | Built-in 8GB SD Card, Expandable To 32GB |
>Software Interface
>Application Scenarios
Application：Non-circular Wheel Characteristics & Stationarity Test
Serial Number | Measured Value | Feature Level |
1 | 0 < Measured Value < 15dB | Level 3 |
2 | 15dB≤ Measured Value<25dB | Level 2 |
3 | 25dB≤ Measured Value | Level 1 |
| Non-circular Characteristic Grade Of Wheels | Stationarity Or Sway Grade |
Transmission Mode | WiFi |
Eigenvalue Transmission | FFT Spectrum | Peak Value Of FFT Spectrum And Time Domain Acceleration |
Raw Data Management | Store In SD Card Built In The Device |
Transmission Interval | 0.25s | 0.1s Or 0.2s |
Numerical Calculation | The local control terminal receives the eigenvalue through wireless transmission, and command its software to process the eigenvalue data according to the corresponding judgment criteria and basis to obtain the grade judgment results. |
Noise Monitoring Inside The High-speed Railway Carriage
Noise Monitoring Of Industrial Environment -- the air outlet of the air conditioning
Noise Monitoring Of The Road Traffic Noise Monitoring Of The Construction Site
