The MOCCULA-MVB – Wireless Enabled MVB Gateway is a powerful stand-alone high reliability gateway for extracting MVB data to be used by other onboard or remotely located systems. The MVB Protocol Engine and the Physical Interface comply with electrical and functional requirements of ESD+ and EMD MVB networks. The small footprint MOCCULA is ideal for upgrade programs due to its small size and support for project specific firmware adaptations. This enables the MOCCULA to support various protocols used by different train manufacturers. The MOCCULA is specifically validated for ALSTOM train MVB data. The MOCCULA is based on a YOCTO Linux Quad Core ARM CORTEX A7 processor, which executes the embedded software. Local soldered down eMMC Flash storage is used for application software as well as data buffering. An additional uSD card can be used for local data logging of vehicle parameters.
The MOCCULA is capable of acquiring the complete range of MVB I/O space, buffering and parsing all the messages in real time. The MOCCULA, can send the complete package of MVB data over Ethernet or its wireless LTE CAT 4 modem with an updating rate of 1s. Specific data can also be sent over the isolated RS-485 port to other onboard systems. The MOCCULA is a fully fledged gateway router with the ability to extract train health and operational data. Train location services may use the optional RTK supported high sensitivity GNSS subsystem. Train speed and direction are extracted from the MVB data in real time to be used to support RTK sensor data fusion. This enables accurate train location for diagnostics systems. MOCCULA supports accurate navigation in underground and covered locations. The design of the power supply has extensive input filtering exceeding the requirements of EN50155. The input contains an active protection circuit and multi-stage filter to ensure lowest emissions and best immunity. The input is reverse protected up to 100V and will withstand indefinite overvoltage up to 100VDC.
The operating temperature range is -20 to 70C.
| MVB | ESD+ or EMD – factory configured |
| GNSS | Constellations: GPS, GLONASS, BeiDou, Galileo and QZSS 48 tracking channels -162 dBm tracking sensitivity Antenna open-short detection FAKRA connector for antenna |
| RTK | Embedded 6-axis MEMS sensors MVB interface used for speed and direction data |
| MODEM | LTE CAT 4 modem eSIM and uSIM, software selectable uSIM front accessible B1, B3, B5, B7, B8, B20 B38, B40, B41 band support (Optional LTE modem band support for INDIA) Uplink up to 50Mbps Downlink up to 150Mbps FAKRA connector for antenna |
| CPU 1 | Linux ARM CORTEX A7 4 core, 1.2GHz 512GB eMMC Flash, SD-card memory expansion Secure unique encrypted serial number for device identification |
| Interfaces | 10/100Mbit Ethernet (RJ-45 or optional M12 D-code) USB 2.0, TYPE AB connector for maintenance RS-485, 4 Isolated Digital Inputs, 4 Isolated digital outputs MVB, Dual DB9 connectors (M + F) |
| Power | 8-38VDC input range |
| Indicators | 1x MODEM Status, 1x User configurable |
| Firmware | MVB modem stream, MVB to IP bridging Routing functions MVB data to RS-485 broadcasting OTA update and configuration |
| Mechanical | Anodized extruded enclosure, Dimensions: 100mm x 126mm x 30mm |