Objective

Continuous online monitoring to analyze the dynamic behavior of roller coasters and the condition of the tracks

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Customer

Mack Rides GmbH & Co. KG

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Period

since 2021

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Challenges

• Extreme demands on the radio link due to dynamic driving behavior and magnetic interference fields
• Limited energy supply while driving
• Weather resistance of the measurement technology
• No cabling possible between cars
• Enormous data volumes (several gigabytes per day) to be transmitted via 4G cellular connection

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Realization

• Wireless nemione measurement system based on three small sensor / telemetry modules and a gateway with integrated sensors
• Flexible installation of the nemi G+ acceleration sensors in the front and rear area of the train in weather-resistant boxes; accelerations, rotations and magnetic fields are measured in each of 3 axes (9 DoF IMU)
• Localization of the train on the roller coaster track using inductive and optical switching sensors connected to the telemetry module nemi DAQ
• Mounting of the gateway nemi EdgeBase underneath the train in a weather resistant box;
• 9 DoF IMU & temperature sensor integrated in nemi EdgeBase
• Due to low power technology of all components, power can be supplied by supercapacitors, which are charged in the station via 24 V on-board network
• Transmission of measurement data from the sensor / telemetry modules to the gateway via nemi Link 2400 - i4Ms radio technology in the 2.4 GHz frequency band
• Data collection and transmission via VPN-tunneled 4G cellular connection & (S)FTP server

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Advantages

• Simple and fast mounting / dismounting due to small and lightweight components
• Uncomplicated handling of wireless sensors
• Reliable data through i4M ́s robust radio technology nemi Link 2400

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Used nemione products

• nemi G+
• nemi DAQ
• nemi EdgeBase

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