Monitoring systems for plants help maintain or restore integrity, limit degradation, and extend the service life by monitoring operating and usage conditions. They offer advantages such as maintenance optimization, fault prevention, and enhanced safety.

Typical tools include vibration measurement, temperature monitoring, electrical consumption, and analysis of lubricating oils. Traditional techniques, based on separate phases and post-operative analysis, require skilled operators to correlate the data.

The NVT-HMS system, thanks to its modern architecture, enables real-time measurements and validations based on operational conditions, transmitting only validated data. For example, it monitors vibrations in an electric motor by considering different operating conditions (off, variable speed, constant speed), excluding insignificant measurements. This simplifies control, making data immediately available and useful, overcoming the limitations of traditional systems.

The NVT-HMS monitoring system uses a distributed architecture with acquisition modules capable of conditioning, processing, and sending validated measurements in real-time to the server. It consists of:

• Measurement Transducers/Bench Control Systems (Field Bus)

• DAU Units (4-32 channels) for signal conditioning, acquisition, and processing

• Embedded Computing Units (cRIO/cDAQ)

• Client/Server Software with modules for real-time acquisition and analysis (NVT-HMSrec), server and historical data management (NVT-HMS-server), and monitoring up to 10 users (NVT-HMS-viewer).

The system ensures flexibility and advanced data management.

The NVA-HMS is utilized across multiple sectors, thanks to its flexibility and advanced capabilities:

• Automotive: NVH (Noise, Vibration, Harshness) analysis, testing of engines, transmissions, and mechanical components.

• Civil and Structural: Measurement of vibrations in buildings, bridges, and infrastructure for safety assessments.

• Electronics: Testing of vibration-sensitive devices, such as printed circuit boards and microelectronic components.

• Transportation and Defense: Performance evaluation of land, maritime, and military vehicles under extreme operating conditions.

Hardware

DAU Systems with cRIO/cDAQ Embedded Architecture

• AD Converters: 16 and 24-bit Delta Sigma, up to 102.4 kS/s/channel

• Anti-Aliasing Filters and Simultaneous Sampling

• Transducer Power Supply: For IEPE and MEMS transducers

• Protocol Management: Supports CAN/Modbus/Profibus/EthernetIP

• Dynamic Range: Up to 100 dB

• Ethernet Connection: 100M/1G

• Local Processor: Up to Intel Quad-core

• Operating System: Linux Real-Time

• Local Storage: SSD/SD card up to 512 GB

• Power Supply: 9-32 Vdc

Software

User-Managed Channel/Measurement/Alarm Setup

• Real-Time Acquisition, Processing, and Monitoring

• Measurement Recording and Event Streaming: On user request, on alarm, and time-based

• Real-Time Display: Measurement graphics and trends

• Signal Analysis in Post-Processing

• Signal Conditioning: Scaling, Integration, Differentiation, Tachometric Synthesis

• Frequency Domain Analysis: FFT Magnitude and Phase - Order Tracking Magnitude and Phase

• Special Analyses: Bearing Order Tracking - Orbits - Gear Mesh Analysis - Torsional Analysis

• Alarms: Absolute Value/Trend/BaseLine Time - FFT - Order Tracking

• dBASE Management: Measurements and Events

• Historical Search: Measurements and Events

• Search by Measurement/Alarm

• Search Streaming Signal Events