CLIMATIC & VIBRATION TESTING: ROUND-UP
❱❱ High-performance TARS-IMU sensor array from Honeywell reports vehicle angular rate, acceleration and inclination data, left; the array is packaged in a robust enclosure which is resistant to shock and vibration as well as temperature and moisture ingress so it can be used in harsh environments, below
Attitude reference sensors from Honeywell
A flexible and durable sensor array has been produced by Honeywell for use in heavy-duty and off-highway applications. UK supplier of sensors and electronic
devices for high reliability and harsh applications in the transport and other sectors, Powell Electronics, has started handling the new Transportation Attitude Reference System (TARS) from Honeywell The TARS system consists of a packaged sensor array, which is designed and configured to report vehicle angular rate, acceleration and attitude data for demanding applications such as heavy duty and off-highway transportation. Born out of the needs of the defence industry, the array has a significant role to play in agriculture, construction and other applications The TARS-IMU device measures
important vehicle characteristics and enhances efficiency and productivity by
reporting key data required to automate and monitor movements of vehicle systems and components. With two sensor models for different power levels, the TARS-IMU sensor array accommodates both 5V and 9V to 36V vehicle power systems.
SENSOR FUSION The sensor fusion algorithm can be customised for specific vehicle applications via on-board firmware, allowing movement data to be filtered to minimise unwanted noise and vibrations for improved position accuracy.
❱❱ The GenH2 prototype HGV with hydrogen power has been tested for performance at altitude over the high-level Brenner Pass, right, while emitting only water vapour
Communication is transmitted using industry standard CAN J1939 connectivity. As a standard, the TARS- IMU component is calibrated on aerospace-grade rate tables at the factory to provide enhanced calibration consistency between units. The system has a full six degrees of freedom so that a combination of translational and rotational movements can be measured to create a full picture of the way in which the array moves. The standard x, y and z axis movements (sway, surge and heave) are measured in combination with their torsional equivalents (yaw, roll and pitch). The operating temperature range is - 40°C up to +85°C and the TARS-IMU sensor array comes in a ruggedised PBT thermoplastic housing and is IP67 and IP69K certified for use in the most demanding environments. A metal guard for added protection is also available.
Mercedes-Benz
On the road towards the sustainable transport of the future, a Mercedes-Benz GenH2 prototype heavy goods vehicle has successfully completed its first high- altitude tests on public roads.
A major point on the checklist of the test programme was to cross the Brenner Pass, one of the main arteries of European freight traffic. In 2019 alone, around 40 million tons of freight were transported by truck via the four-lane transit route located at an altitude of up to 1,370m at the border between Austria and Italy. That corresponds to almost 2.5 million trucks a year.
During the week-long test drives, the Daimler Truck engineers repeatedly
24 /// Testing & Test Houses /// December 2022
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