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Smart air spring provides status info for predictive maintenance

Smart air spring provides status info for predictive maintenance

Technology company Continental has developed a new air spring system with integral sensor technology that provides continuous operational status information in real time. Everyday operations in the construction and mining sectors will gain in efficiency as a result of the smart air spring: continuous condition monitoring offers operators of construction machinery valuable assistance in ensuring trouble-free and efficient operations.

Construction machines and equipment deliver peak performance day in, day out – in a demanding environment. It’s a rare construction site indeed that does not have to contend with dust, mud and dirt, which means that the machine components also have to cope with them. The problem is that up till now, with a conventional air spring, users received almost no operational status information. They had to rely simply on what they could see from the outside or on their subjective perception.

Changing that was one of the Continental engineers’ aims when working on the air spring with integral sensor technology, designed to efficiently reduce vibrations. The integrated sensor technology provides information on pressure, temperature and positioning. “This development is a milestone in air spring technology,” says Herwig Peters, who is responsible for industrial applications of air spring systems at Continental. “We’re ushering in the next stage in digitalisation. The air spring has been made smart, enabling it therefore to communicate with the user.”

Everyday operations in industrial applications will gain in efficiency as a result of the smart air spring. The air spring can now supply precise and reliable information on its status, including information on pressure, temperature and height. The air spring’s operating height can be displayed accurately and dependably. “The purpose of the integrated-sensor air spring system is to make a globally established system such as the air spring even safer, simpler and more efficient for customers – and thus also all the associated operations and processes, particularly in the fields of control and monitoring,” says Carsten Klages, sales manager for industrial applications at Air Spring Systems.

But how do you manage to marry a rugged air spring, as used in construction machinery, with sophisticated electronics? “The greatest challenge in incorporating the sensor system really lay in integrating the fine wiring of the electronics in the product such that the air spring properties are not changed and the electronic system is not damaged,” reports Klages.

The Continental experts resolved this demanding brief by means of a specially developed adapter. This ensures a reliable connection between the air spring and the sensor system. “We now have two cables: one to connect the air spring control system and the other for the data connection,” explains Klages. The sensor now measures the air spring’s mechanical status completely automatically. “This information is then transmitted to the machine controller. That is the necessary prerequisite for predictive maintenance or safety. As in the past, we will stay in close consultation with our customers while driving the development of such systems to ensure they are directly tailored to their needs,” says Klages.

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