GB1463110A - Method and apparatus for excluding data output from an electrical channel - Google Patents

Method and apparatus for excluding data output from an electrical channel

Info

Publication number
GB1463110A
GB1463110A GB2672774A GB2672774A GB1463110A GB 1463110 A GB1463110 A GB 1463110A GB 2672774 A GB2672774 A GB 2672774A GB 2672774 A GB2672774 A GB 2672774A GB 1463110 A GB1463110 A GB 1463110A
Authority
GB
United Kingdom
Prior art keywords
mcv
channel
gates
outputs
june
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB2672774A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coulter Electronics Ltd
Coulter Electronics Inc
Original Assignee
Coulter Electronics Ltd
Coulter Electronics Inc
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
Application filed by Coulter Electronics Ltd, Coulter Electronics Inc filed Critical Coulter Electronics Ltd
Publication of GB1463110A publication Critical patent/GB1463110A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0038—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing pulses or pulse trains according to amplitude)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects
    • G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle
    • G01N15/131—Details
    • G01N15/132—Circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Dc Digital Transmission (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

1463110 Particle analyzers COULTER ELECTRONICS Ltd 17 June 1974 [29 June 19731 26727/74 Heading G1N [Also in Division H3] A malfunctioning one of at least three electrical channels which should be carrying the same pulse data is identified by comparing in pairs the mean pulse height in the channels. The invention is described applied to a Coulter-type blood monitoring apparatus giving various measurements including red blood cell count (RBC) and mean corpuscular volume (MCV). The MCV outputs derived from three independent detectors 24, 26 and 28 normally pass through analog gates 55, 57, 59 and an averaging network to an output 89. The MCV signals which are representative of the mean pulse height in the detector outputs are also compared in differential amplifiers 37, 38, 41 and if any channel deteriorates the output of the amplifiers 37, 39, 41 having that channel as an input exceed a pre-set threshold level and the corresponding AND gate 49, 51, 53 closes the gates 55, 57, 59 corresponding to the defective channel. The outputs of gates 49, 51, 53 may also be used at 79, 81 and 83 to gate out the defective channel from the RBC circuit. Signals on lines 62, 64, 66 from threshold circuits 61, 63, 65 pass the data pulses to the MCV systems 25, 27, 29 when the pulses are present.
GB2672774A 1973-06-29 1974-06-17 Method and apparatus for excluding data output from an electrical channel Expired GB1463110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US374988A US3863056A (en) 1973-06-29 1973-06-29 Method and apparatus for multichannel voting

Publications (1)

Publication Number Publication Date
GB1463110A true GB1463110A (en) 1977-02-02

Family

ID=23479047

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2672774A Expired GB1463110A (en) 1973-06-29 1974-06-17 Method and apparatus for excluding data output from an electrical channel

Country Status (10)

Country Link
US (1) US3863056A (en)
JP (1) JPS5548358B2 (en)
CA (1) CA999653A (en)
DE (1) DE2429204C3 (en)
FR (1) FR2235536B1 (en)
GB (1) GB1463110A (en)
IL (1) IL45041A (en)
IT (1) IT1013485B (en)
NL (1) NL7408026A (en)
SE (1) SE399791B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2319618B (en) * 1996-11-20 2000-08-23 Microbial Systems Ltd Particle sizing apparatus
US6418802B1 (en) * 1996-11-21 2002-07-16 Michael Anthony Wood Particle sizing apparatus and method of use thereof

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932839A (en) * 1974-04-24 1976-01-13 Stephens Richard G Pattern analysis apparatus and method
US4264955A (en) * 1978-11-03 1981-04-28 The United States Of America As Represented By The United States Department Of Energy Signal voter
JPS5634265A (en) * 1979-08-29 1981-04-06 Nec Corp Fault detecting circuit
FR2624964B1 (en) * 1987-12-22 1990-06-01 Aerospatiale SPEED REFERENCE SYSTEM FOR AIRCRAFT PILOTAGE
US5696458A (en) * 1995-06-02 1997-12-09 Nova R&D, Inc. Front end data readout chip
US6720812B2 (en) 1995-06-02 2004-04-13 Nova R&D, Inc. Multi-channel integrated circuit
US6150849A (en) * 1995-06-02 2000-11-21 Tuemer; Tuemay O. Readout chip for nuclear applications
US7126386B2 (en) * 2001-10-25 2006-10-24 Nova R&D, Inc. Multi-channel integrated circuit
US20040002166A1 (en) * 2002-06-27 2004-01-01 Wiederin Daniel R. Remote analysis using aerosol sample transport
US7579879B2 (en) * 2005-10-27 2009-08-25 Honeywell International Inc. Voting scheme for analog signals

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420993A (en) * 1964-11-23 1969-01-07 Gen Electric Redundant analog failure correction and detection process and apparatus
US3444464A (en) * 1965-11-26 1969-05-13 Coulter Electronics Multiple aperture fittings for particle analyzing apparatus
US3668531A (en) * 1966-02-23 1972-06-06 Coulter Electronics Pulse analyzing apparatus
US3557352A (en) * 1967-11-01 1971-01-19 Coulter Electronics Apparatus and method for measuring a dividing particle size of a particulate system
US3530381A (en) * 1968-01-15 1970-09-22 Coulter Electronics Voting circuit control apparatus for multiple aperture particle analyzing device
US3603875A (en) * 1969-05-12 1971-09-07 Coulter Electronics Particle analyzing method and apparatus employing multiple apertures and multiple channels per aperture
US3757213A (en) * 1970-05-25 1973-09-04 Coulter Electronics Ntrol particle size analyzing apparatus and method using threshold level co
US3686486A (en) * 1970-12-02 1972-08-22 Coulter Electronics Apparatus for obtaining statistical hematological indices and analyzing same and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2319618B (en) * 1996-11-20 2000-08-23 Microbial Systems Ltd Particle sizing apparatus
US6389912B1 (en) 1996-11-20 2002-05-21 Michael Anthony Wood Particle sizing apparatus and method of use thereof
US6418802B1 (en) * 1996-11-21 2002-07-16 Michael Anthony Wood Particle sizing apparatus and method of use thereof

Also Published As

Publication number Publication date
CA999653A (en) 1976-11-09
DE2429204C3 (en) 1981-04-30
JPS5038574A (en) 1975-04-10
US3863056A (en) 1975-01-28
IL45041A0 (en) 1974-09-10
SE399791B (en) 1978-02-27
IT1013485B (en) 1977-03-30
DE2429204A1 (en) 1975-01-16
SE7407965L (en) 1974-12-30
FR2235536B1 (en) 1976-10-15
DE2429204B2 (en) 1980-07-31
NL7408026A (en) 1974-12-31
IL45041A (en) 1976-07-30
FR2235536A1 (en) 1975-01-24
JPS5548358B2 (en) 1980-12-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee