The MLabs team is involved in realisation of the MONIT project - Monitoring of Technical State of Construction and Evaluation of its Lifespan, a research Project within the Innovative Economy Operational Programme.A complete technical state monitoring system for light rail vehicle has been constructed for the purpose of this project.

The system consists of numerous devices:1. Data Acquisition Unit

• the main part of the system, responsible for downloading and saving measured data from all of the sensor units and also passing it to the communication module

• integrated communication module – providing communication backbone (link to the IT system) for other modules; this module uses CAN, GSM and WiFi (802.11b/g)

o GSM modem with operation accuracy control and automatic restart system in cases of link loss,

o external GSM antenna connector,

• integrated positioning module, which uses measured data analysis and multimodal vehicle geolocation techniques (based on GPS satellites and odometer sensor)

• CAN bus with algorithms preventing desynchronisation

• controlled by a real-time operating system

• battery supporting operation without external power for min. 150 minutes

• external power: 24V AC

• intelligent power management with an ability to power off redundant devices to keep the communication link alive,

• Operational environment conditions: -25 –70 ºC (based on PN-EN 50155 – class T3)

2. Sensor units:

All sensor units are unified to one enclosure dimensions (45mm x 38mm x 25mm). Operational environment conditions are to -40 –50 ºC (based on PN-EN 50155 – class TX).

a. accelerometer sensor

a.i. 24-bit, 3-axis converter

a.ii. possibility of mounting in any orientation

a.iii. possibility of measurement of the vibration acceleration in the frequency range from 0,5Hz up to 100Hz

b. inclinometer sensor

b.i. digital gyroscope and accelerometer with embedded measurement algorithms

b.ii. measurement range +/- 15°

c. environmental sensor

c.i. measurement of external temperature at range from -400C up to +700C

c.ii. air humidity measurement

d. odometer sensor

d.i. used to measure distance and speed of the vehicle

d.ii. ability to connect universal proximity probes: capacitive proximity sensor NPN/NO or NPN/NC with 12V operating voltage

d.iii. 3-wire interface to connect one probe

3. Client application

The system is now integrated with a client application bought by the project leader (Warsaw University of Technology), created by Mobile Systems Research Labs at Poznan University of Technology.

The system is designed to be installed on trams commonly used in Poland:

• KONSTAL 105N/108N and similar

• KONSTAL 111N, 112N, 114Na, 123N

• Moderus Alfa

• PESA (120N/121N/122N)

• Siemens Combino

• Solaris Tramino

• Tatra RT6N1