WO2002103284A3 - Probe for position determination - Google Patents

Probe for position determination Download PDF

Info

Publication number
WO2002103284A3
WO2002103284A3 PCT/GB2002/002599 GB0202599W WO02103284A3 WO 2002103284 A3 WO2002103284 A3 WO 2002103284A3 GB 0202599 W GB0202599 W GB 0202599W WO 02103284 A3 WO02103284 A3 WO 02103284A3
Authority
WO
Grant status
Application
Patent type
Prior art keywords
probe
external controller
battery terminals
sending
voltage
Prior art date
Application number
PCT/GB2002/002599
Other languages
French (fr)
Other versions
WO2002103284A2 (en )
Inventor
David Collingwood
Geoffrey Salt
Jonathan Paul Fuge
Original Assignee
Renishaw Plc
David Collingwood
Geoffrey Salt
Jonathan Paul Fuge
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic means
    • G01B7/004Measuring arrangements characterised by the use of electric or magnetic means for measuring coordinates of points
    • G01B7/008Measuring arrangements characterised by the use of electric or magnetic means for measuring coordinates of points using coordinate measuring machines
    • G01B7/012Contact-making feeler heads therefor

Abstract

The batteries of a probe (10) are replaced by a dummy battery (30) which is connected to a an external controller (44,45) by wires (32,134) leading from the dummy battery terminals (36,38). The external controller (44.45) supplies a constant voltage to the probe (10) and also sends messages to the probe consisting of pulses of higher voltage. A comparator circuit within the probe compares the voltage at the dummy battery terminals with a known reference and sets a logic level high or low, thus enabling a serial data stream to be communicated to a programmable device within the probe. The probe may respond by sending a message back to the external controller, for example by modulating the current drawn through the battery terminals, sending an optical signal or by other means.
PCT/GB2002/002599 2001-06-16 2002-06-14 Probe for position determination WO2002103284A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0114736.2 2001-06-16
GB0114736A GB0114736D0 (en) 2001-06-16 2001-06-16 Machine tool probe

Publications (2)

Publication Number Publication Date
WO2002103284A2 true WO2002103284A2 (en) 2002-12-27
WO2002103284A3 true true WO2002103284A3 (en) 2004-02-19

Family

ID=9916749

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/002599 WO2002103284A3 (en) 2001-06-16 2002-06-14 Probe for position determination

Country Status (2)

Country Link
GB (1) GB0114736D0 (en)
WO (1) WO2002103284A3 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339434A (en) * 1964-11-03 1967-09-05 Taco Inc Apparatus for monitoring automatic machines
US3778800A (en) * 1971-04-09 1973-12-11 Statitrol Corp Self-monitoring battery operated circuit
US4451742A (en) * 1981-05-27 1984-05-29 Mostek Corporation Power supply control for integrated circuit
US4599524A (en) * 1982-10-11 1986-07-08 Renishaw Plc Position-sensing apparatus
US5065035A (en) * 1981-04-30 1991-11-12 Gte Valenite Corporation Optical data system having flash/receiver head for energizing/receiving information from a battery operated transmitter
WO2000070298A1 (en) * 1999-05-13 2000-11-23 Marposs Societa Per Azioni System for detecting linear dimensions of mechanical workpieces, with wireless signal transmission units

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339434A (en) * 1964-11-03 1967-09-05 Taco Inc Apparatus for monitoring automatic machines
US3778800A (en) * 1971-04-09 1973-12-11 Statitrol Corp Self-monitoring battery operated circuit
US5065035A (en) * 1981-04-30 1991-11-12 Gte Valenite Corporation Optical data system having flash/receiver head for energizing/receiving information from a battery operated transmitter
US4451742A (en) * 1981-05-27 1984-05-29 Mostek Corporation Power supply control for integrated circuit
US4599524A (en) * 1982-10-11 1986-07-08 Renishaw Plc Position-sensing apparatus
WO2000070298A1 (en) * 1999-05-13 2000-11-23 Marposs Societa Per Azioni System for detecting linear dimensions of mechanical workpieces, with wireless signal transmission units

Also Published As

Publication number Publication date Type
WO2002103284A2 (en) 2002-12-27 application
GB0114736D0 (en) 2001-08-08 grant

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