Distributed On-line Monitoring System - ME-82U
The ME-82U Distributed Online Monitoring System, with reliable communication, long transmission distance, high test accuracy, low noise, small drift, strong environmental adaptability and high maintainability, is specially designed for engineering testing field for long-term online monitoring. ME-82U is widely used for the condition monitoring of port machinery, bridge construction, rail transit, etc. from construction to operation. ME-82U can complete a series of monitoring tasks of physical quantities such as strain, stress, displacement, temperature and vibration in harsh environments such as frequent thunderstorms, electromagnetic radiation and large temperature difference.
Various types of collectors can be combined freely to measure the physical quantities of strain, vibration, temperature and so on
By Communicating with the computer via 100M Ethernet, the multi-channel signal can be recorded for a long time, in real time and without interruption
The system adopts advanced isolation technology and reasonable grounding, has a strong anti-interference ability, and is suitable for the test of various engineering occasions
The maximum sampling rate is up to 200Hz/channel for simultaneous sampling of all channels
| Name | Detail |
|---|---|
| Sampling Rate | 10Hz, 20Hz, 50Hz, 100Hz, 200Hz |
| Frequency Response (+0.5dB~-3dB) | DC ~ 30Hz (20Hz flatness) |
| A/D Converter | 24 bits |
| System Uncertainty | <0.5% of F.S. |
| Controller | |
| Number of communication port | 2 |
| Communication | Ethernet |
| Multi-controller Sync. Mode | Sync. Cable |
| Communication with the Measuring Unit | RS485 |
| Output Voltage | 36V DC |
| Power supply | 220V AC, 50Hz |
| Dimensions | 220×200×110mm |
| Strain Measurement | |
| Bridge Completion Resistors | 120Ω |
| Bridge Voltage | 2V |
| Bridge Configuration | Full, half, three-wire quarter bridge |
| Input mode | Dif-DC, GND |
| Power Consumption | <2W |
| Full-scale Value | ±1000µε |
| Noise (Peak-to-Peak) | <1µε |
| Zero Drift | 3µε/8h |
| Dimensions | 180×180×90mm |
| Current Measurement | |
| Connection Modes | Three-wire or two-wire |
| Input Current Range | 4 ~ 20mA |
| Power Supply | 24V |
| Temperature Measurement | |
| Sensor | PT100 |
| Input Temperature Range | −50°C ~ 150°C |
| Constant current source | 1mA±2µA |
| Connection Modes | Four-wire |
| Bridge Sensor Acquisition Unit | |
| Measurement type | Bridge Sensor |
| Bridge Voltage | 10V |
| Bridge Configuration | Full bridge or half bridge |
| Input Mode | Dif-DC, GND |
| Full-scale Value | ±50mV |
| Vibration Measurement | |
| Full-scale Values | 6mm/s, 600mm/s |
| Measuring Direction | Uniaxial, biaxial, triaxial |
| Signal Frequency Response | 0.1Hz ~ 39Hz (−3dB ~ +1dB) |
| Dimensions | 245×185×105mm |
| Environmental Conditions | |
| Operating Temperature | −30°C to 70°C |
| Operating Humidity | 20 ~ 90%RH@40°C |
| Storage Temperature | −40°C to 70°C |
| Storage Humidity | 90%RH24h@50°C |
| Vibration |
Frequency cycle range: 5Hz ~ 55Hz ~ 5Hz Drive amplitude (peak): 0.19mm Sweep frequency: ≤1Oct./min Duration of resonant: 10min Vibration direction: x, y, z |
Figure 1 Connection Diagram of Distributed On-line Monitoring System
Figure 2 Extended Connection Diagram of Distributed On-line Monitoring System
DE-BPS Basic Platform Software
Running on XP/Win7/Win8/Win10 operating system
Parameters setting, Function control, Real-time/post-acquisition analysis, data browsing, cursor readouts, scaling curve, data management and simple processing, report generation, long-term continuous data recording, etc.
DE-MS Monitoring Software
Running on DE-BPS and XP/Win7/Win8/Win10 operating system
Based on B/S framework, the local LAN and Internet network equipment management functions are realized
The running status of on-site equipment can be remotely monitored and analyzed in real time
Include the function of user management, data storage, alarm, power outage self-recovery, time domain analysis, spectrum analysis and trend analysis
DE-SMS Structural Modal Calculation & Identification Software
The software module is capable of automatically identificating modal parameters and automatically calculating modal results, realizing the "one-key setting" operation and the function of online modal, and is suitable for large-scale engineering structures
ME-82U Controller
Optional of cast aluminium chassis (Suitable for on-site installation, waterproof, dustproof, anti-electromagnetic interference, IP65) and 361 stainless steel chassis (Suitable for port, dock and other on-site installation, waterproof, dustproof, salt proof, anti-electromagnetic interference, IP65)
Communicate with computer via Ethernet
Communicate with DAQ unit via RS485
2 communication output ports, up to 8 DAQ units in series supported by each port
The maximum distance between DAQ units up to 200m, and the distance between the farthest DAQ unit and the controller up to 1000m
Multiple controllers can be extended via switch
ME-82U-1 DAQ Unit
Optional of cast aluminium chassis (Suitable for on-site installation, waterproof, dustproof, anti-electromagnetic interference, IP65) and 361 stainless steel chassis (Suitable for port, dock and other on-site installation, waterproof, dustproof, salt proof, anti-electromagnetic interference, IP65)
4 input channels
Independent 24-bit A/D converter per channel with software-selectable sampling rate of up to 100Hz
Optional of strain measurement unit, vibration measurement (bridge sensor) unit, current measurement unit, platinum resistance temperature measurement unit
Analog quadratic integral
ME-82U-2 DAQ Unit
Waterproof, dustproof, anti-electromagnetic interference, cast aluminium chassis, IP65 rating, suitable for on-site installation
1~3 high sensitivity and low frequency velocity sensors (0.1Hz ~ 100Hz) can be mounted inside, and horizontal and vertical directions are optional
Full-scale values are 600mm/s and 6mm/s, and corresponding signal frequency range is 0.13Hz ~ 39Hz (-3dB ~ +1dB)
The sampling rates are 10Hz, 20Hz, 50Hz and 100Hz, and when 3 sensors are built in, the sampling rate is 50Hz