Renishaw Plc

Martin Woollett

John Anthony Styles

John Liptrot

Tim Prestidge

A transmission system for a measurement device on a coordinate positioning apparatus comprises a station mounted on the measuring device and another station mounted on the coordinate positioning apparatus, wherein the station and the another station communicate with each other using a spread spectrum radio link, for example, frequency hopping. The station on the probe sends a regular signal and on receiving the signal the another station on the coordinate positioning apparatus synchronizes its clock and sends an acknowledgement signal. Measurement data is either sent in the regular signal or in a measurement event driven signal.

Signal transmission system for a measurement device

A transmission system for a measurement device on a coordinate positioning apparatus comprises a station () mounted on the measuring device () and a station () mounted on the coordinate positioning apparatus (), wherein the stations communicate with each other using a spread spectrum radio link, for example frequency hopping. The station on the probe sends a regular signal and on receiving the signal the station on the coordinate positioning apparatus synchronises its clock and sends an acknowledgement signal. Measurement data is either sent in the regular signal or in a measurement event driven signal.

A measurement probe (), such as a touch trigger or analogue probe, is described that comprises a deflectable stylus portion () and a wireless communications unit () for transmitting stylus deflection data to a remote probe interface (). The wireless communications unit () is arranged to transmit digital data packets comprising stylus deflection data and a probe identity code. The wireless communications unit () allows said probe identity code to be set by a user. The measurement probe () may communicate with an associated probe interface () over a radio frequency (RF) spread spectrum link ().

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Bristol, United Kingdom

Martin Woollett