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Sensor Technology is developing technology that is aimed to ensure safety in theatres.

In such environments, many stage props and almost all of the backdrops are lowered onto the stage from the fly tower just behind it.

Usually this is done quickly between scenes, but sometimes it is during – and as part of – the actual performance.

Either way, safety and reliability are essential.

Sensor Technology is achieving this using real-time load signals from each winch.

The data is monitored by a computer in the control room so that instant action can be taken if any loads move out of tolerance.

Each Loadsense has an onboard radio-frequency transmitter that sends signals to the control-room computer.

The transmitter has to be physically robust to cope with the environment it finds itself in and capable of maintaining its signal integrity through the most corrupting of harmonic conditions.

Loadsense is proving so sensitive that it can provide a feedback signal to close the control loop on a vector drive controlling the winch.

Sensor Technology

Sensor Technology are manufacturers of TORQSENSE Transducers, the world’s first low cost non-contact rotary torque transducers designed for OEM applications. Rotary torque measurement has always been difficult and expensive.

The patented method uses a surface acoustic wave device as a frequency dependent strain gauge and measures the change in resonant frequency caused by the applied strain in the shaft.

The signal is transmitted via an RF couple from the rotating shaft to a fixed pick-up.

By using a frequency-based device, the signal bandwidth is increased, and the problem of electronic interference common with analogue signals is eliminated. The torque sensors are designed to operate direct from a PLC or a PC.

They require minimum length of shaft, have low inertia, no physical contact between shaft and housing, wide bandwidth, high resolution and accuracy resolution to better than one part in a million, and excellent noise immunity.

The technology lends itself to design of OEM transducers for specific customer applications. Applications include automotive, manufacturing machines, condition monitoring where knowledge of torque is critical, torque control of tightening procedures, and monitoring of viscosity during mixing where consistency is required. The technology replaces existing types of rotary torque sensors by providing better performance at a lower price.

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