Sensor automation and accuracy

Traditionally, modern construction machinery is controlled and
moved by hydraulic systems, which means that electronics and control technologies have played only a minor role in many applications. This is changing with safety-relevant aspects and driver-assist functions now setting the stage.
Gerry Bryant, managing director of Countapulse Controls, says that it has become obvious over time that the role of sensor technology will become increasingly important in construction equipment.
“Machinery deployed in these industry sectors are subjected to harsh operating conditions including varying climatic conditions, long working
hours and exposure to dust, dirt and liquids. This means the
demand on sensors is often extreme requiring robustness
and a high degree of protection,” he says.
Examples include straight-tot he point positioning of loads for hoisting equipment or restricting work zones in order to protect against collisions. Another classic example is where the devices are used in safety-relevant functions such as providing warning signals to the driver as soon as the machine enters a critical situation, for example a tilting crane.
Agricultural and forestry machine applications use sensors to facilitate the automation of many applications, making work significantly easier and increasing productivity. This could include speed-controlled sowing in agriculture right through to automated measuring of tree trunks. Automated processes that increase productivity in agriculture are becoming more and more sophisticated using satellite-controlled
Gerry concludes by saying that encoders used in construction equipment
prove their capabilities under extremely harsh conditions by
providing reliable feedback on the positioning, excursion
angles or speeds.
Countapulse Controls
Tel: (011) 615-7556
Email: clive@