Machine tool probe with wireless signal transmission
AssigneeReinshaw PLC
InventorsJonathan P Fuge, David Collingwood
Life of this patent
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Abstract
An optical signal transmission circuit for a probe is switched on by an optical switch-on signal comprising a burst 42 of pulses having a predetermined length. This is detected by a circuit which discriminates whether an input signal is a genuine switch-on signal or an interference burst 44, on the basis of the duration of the switch-on signal.
Claims8
A probe having a wireless signal transmission circuit, a detecting circuit for detecting an optical switch-on signal and switching on the signal transmission circuit when the switch-on signal is received, the detecting circuit including a time discriminating circuit which discriminates whether an input signal is a switch-on signal or interference on the basis of the duration of the switch-on signal.
A method of switching on a probe having a wireless signal transmission circuit, the method comprising:
- sending a wireless switch-on signal of a predetermined duration to the probe;
- discriminating between the switch-on signal and interference on the basis of the duration of the switch-on signal;
- and
- switching on the probe if the switch-on signal is detected.
Dependencies are inferred from the claim text.