The IEPE (Integrated Electronics Piezo-Electric) module (Model Y37) is a specialized I/O module in the Beilai Technology BL190 series, primarily used for measuring dynamic signals such as vibration, pressure, and sound. Below are its core applications and typical use cases:
The IEPE module is designed for low-impedance voltage signal acquisition, suitable for the following sensor types and data collection scenarios:
Vibration Monitoring:
Measures vibration frequency and acceleration of mechanical equipment (e.g., motors, bearings, turbines).
Used for predictive maintenance (PdM) to detect abnormal vibrations and prevent failures.
Pressure Measurement:
Captures dynamic pressure signals (e.g., hydraulic systems, pneumatic equipment, explosion shockwaves).
Sound/Noise Analysis:
Measures decibel (dB) levels for acoustic research and environmental noise monitoring.
Structural Health Monitoring (SHM):
Analyzes dynamic responses of structures like bridges, buildings, and aircraft wings.
The IEPE module (Y37) offers key capabilities for high-precision dynamic signal acquisition:
Signal Type:
Supports low-impedance voltage signals (±10V range), such as outputs from piezoelectric accelerometers and microphones.
AC Coupling:
Filters out DC offset to measure only dynamic signals (e.g., vibration, shock waveforms).
Built-in Excitation Power:
Provides 23V excitation voltage and 3.5mA constant current to power IEPE sensors directly (no external power required).
High Resolution:
24-bit ADC for high-accuracy data acquisition.
Wide Bandwidth:
0.6Hz–20kHz, suitable for low-frequency vibration and high-frequency noise analysis.
Anti-Interference:
High signal-to-noise ratio (>100dB @1kHz), ideal for complex industrial environments.
Example: Bearing wear detection in motors
An IEPE accelerometer connected to the Y37 module monitors vibration spectra in real time, triggering alerts for abnormal frequencies.
Example: Engine vibration analysis
The IEPE module collects vibration data to optimize engine damping design.
Example: Factory noise monitoring
An IEPE microphone measures noise levels and records waveforms.
Example: Explosion shockwave pressure measurement
A high-pressure IEPE sensor captures transient pressure changes.
Sensor Connection:
IEPE sensors typically use a 2-wire setup (signal + power ground) and connect directly to the Y37 module’s channels.
Software Configuration:
In the BL190 web interface, select Y37 Module → IEPE Mode, then set the range (e.g., ±10V) and sampling rate.
| Module Type | Supported Signal | Typical Sensors | Primary Use |
|---|---|---|---|
| Y37 IEPE | Dynamic voltage (±10V) | Accelerometers, mics | Vibration, noise, impact tests |
| Y31 AI | 4-20mA/0-10V | Temp/pressure transmitters | Process control (e.g., level, temperature) |
| Y51 RTD | RTD (PT100/PT1000) | Temperature sensors | Static temperature monitoring |
Sensor Compatibility: Ensure the sensor supports IEPE (constant current power).
Signal Grounding: Use shielded cables to avoid ground loop interference.
Range Selection: Signals exceeding ±10V require an external attenuator.
The IEPE Module (Y37) in Baili’s BL190 series is ideal for industrial vibration, noise, and pressure measurements, especially where high-precision dynamic signal acquisition is needed. Combined with BL190’s Modbus TCP communication and edge computing, it enables real-time monitoring and smart alerts.
