ASC 4425MF
Uniaxial, capacitive
Measurement range: ±2 to ±200 g
Noise density: 10 to 680 µg/√Hz
Frequency range (±5 %): DC to 2900 Hz
To date, vehicle testing has been complex and expensive. It used to require large numbers of sensors of broad coverage to collect and process a wide array of data. In contrast, the Durability Transfer method developed by monalysis is based on a reduced number of high-precision ASC accelerometers that keep delivering stable results under the diverse real-world conditions the automotive industry is exposed to.
„Following the intense testing of different sensor types of various makes we decided to work with ASC’s accelerometers,” remembers Dipl.-Ing. (FH) Benedikt Mundl, engineer for measuring technology and durability at monalysis. “In addition to their distinct quality and excellent value for money, we were convinced by the references of leading vehicle manufacturers who were already using ASC sensors and very pleased with their performance.”
Preparing and conducting a fully comprehensive vehicle test is a highly complex, time-consuming and expensive affair. Properly placing, fixing and calibrating the various measuring points alone typically takes up weeks. “In addition, there’s the investment to consider in the sensor equipment as such, data capturing and the workforce required to continuously monitor and provide technical support for each measuring campaign,” explains Mundl.
Vehicle tests produce critical data for manufacturers to understand and mitigate the impact of all kinds of mechanical forces. For instance, they inform the adaptation of truck behaviors to align with regional road conditions. “As a highway means completely different burdens for a truck compared to negotiating an unpaved mountain road,” Mundl says. With this input, vehicle producers can optimize individual components and overall driving dynamics, and are able to extend the productive life-time of their vehicles under real-world conditions.
monalysis is a spin-off of Kempten University. Since its founding in 2011 the company has been conducting countless vehicle tests for MAN and other truck manufacturers. To reduce clients’ expenses, monalysis’ specialists developed a novel approach. The so-called Durability Transfer method allows for a drastic reduction in the number of sensors used, from several hundred down to just a few. This also reduces the cost of all other parameters that depend on the number of sensors used, as well as the overall duration of measuring campaigns.
At precisely predetermined spots, the remaining high-precision sensors capture, for instance, the exact vertical, horizontal and cross acceleration forces affecting the vehicle. From these values, using deep learning algorithms, the impact of a variety of load and road conditions on other relevant areas of the truck can be determined. “Through our technology-enabled method, we’re now able to calculate the forces impacting the entire vehicle or individual components like the frame, chassis, engine or driver’s cabin,” Mundl explains.
Another benefit: Going forward, based on the vast reduction of measuring points and self-sufficient data collection, any regular vehicle by any manufacturer can be used in testing. In addition, the new method allows for the evaluation and categorization of road conditions.
In the truck testing for MAN, monalysis uses ASC 5521MF triaxial capacitive accelerometers. They cover ranges from ±2 to ±200 g with a wide frequency response and are, therefore, particularly suitable for monitoring low and medium frequencies. Their robust build ensures strong resistance to reoccurring shocks of up to 6,000 g. They operate with significant precision and stability at temperatures of up to +125 °C.
Through years of partnering with leading vehicle manufacturers, ASC’s specialists could develop a diverse portfolio of sensor solutions for the automotive industry that support test engineers in performing optimal drive tests. Due to their wide frequency response rates and excellent impact resistance, ASC accelerometers are commonly used in operational stability monitoring. This includes the effects of vibrations, shocks and test-to-fail research to evaluate materials used and optimize costs.
In addition to strength and fatigue testing, ASC sensors are highly suitable for test bench applications, modal analyses, driving comfort evaluation as well as crash and driving dynamics tests. Beyond analog acceleration sensors, ASC offers digital accelerometers, gyroscopes, tilt sensors and inertial measurement units. Since most customers require sensors for unique applications, ASC frequently tailors customized solutions that are produced at the company’s Bavarian headquarters and can, therefore, be delivered fast.
“Our local manufacturing means we keep in full control of all processes and can therefore commit to uncompromised product quality and short delivery timelines,” says Renate Bay, CEO of ASC. “With this, we’re in a position to offer our customers substantial services.” For instance, ASC will recalibrate accelerometers of all makes and technologies or repair malfunctioning sensor equipment.
Benedikt Mundl is highly pleased with ASC’s products and services. monalysis is going to continue leveraging ASC sensors in vehicle testing; as well as in new, sustainable applications, for instance a pilot scheme to auto-monitor road damage from regular public service busses.
Learn more:
https://www.asc-sensors.de/wp-content/uploads/2022/11/2020_ASC-Case-Study_MAN_monalysis.pdf
https://www.asc-sensors.de/en/sensoren/asc-disens-eco-3321-en
Uniaxial, capacitive
Measurement range: ±2 to ±200 g
Noise density: 10 to 680 µg/√Hz
Frequency range (±5 %): DC to 2900 Hz
Triaxial, capacitive
Measurement range: ±2 to ±200 g
Noise density: 10 to 680 µg/√Hz
Frequency range (±5 %): DC to 2900 Hz
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