IL45041A - Method and apparatus for multichannel voting - Google Patents

Method and apparatus for multichannel voting

Info

Publication number
IL45041A
IL45041A IL45041A IL4504174A IL45041A IL 45041 A IL45041 A IL 45041A IL 45041 A IL45041 A IL 45041A IL 4504174 A IL4504174 A IL 4504174A IL 45041 A IL45041 A IL 45041A
Authority
IL
Israel
Prior art keywords
channel
channels
output
mean size
indication
Prior art date
Application number
IL45041A
Other versions
IL45041A0 (en
Original Assignee
Coulter W
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 W filed Critical Coulter W
Publication of IL45041A0 publication Critical patent/IL45041A0/en
Publication of IL45041A publication Critical patent/IL45041A/en

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

Claims (20)

WHAT WE CLAIM IS:
1. .1. A voting method for excluding data output from a malfunctioning electrical channel within a system having at least three parallel channels, each channel cumulatively carrying substantially the same electrical pulse data, wherein said method comprises the steps of: producing cumulatively in each channel an indication representative of the mean size of the pulses carried in that channel, comparing the mean size indications of all of the channels, and excluding the pulse data output from any channel from which the mean size indication does not compare favorably with the remaining channels.
2. The method according to claim 1 in which said step of indication producing is accomplished by ascertaining electrically the amplitude of each data pulse and obtaining cumulatively the mean value thereof.
3. The method according to claims 1 or 2 in which said step of indication producing is accomplished by converting the pulses in each channel into monopolar sequels of generally histogrammic configuration.
4. The method according to claim 1 in which each electrical pulse represents the volume of a particle, and said step of indication producing is accomplished by electrically ascertaining cumulatively the mean volume
5. The method according to claim 4 which further includes the step of generating the data pulses in a particle analyzer of the Coulter type, with each channel receiving its electrical pulse data from a separate particle analyzer of the Coulter type.
6. The method according to claims 1 to 3 which further comprises the steps of averaging the outputs from the channels, and employing a small portion of such average for defining an acceptable limit for differences in the mean size indication between channels for said step of comparing.
7. The method according to claims 1 to 3 in which said step of comparing includes permutatively comparing the mean size indication of two channels, for all of the channels .
8. The method according to claim 1 which further includes the step of producing separately another indication representative of the data pulses from each channel, and employing said excluding for excluding as an output said . another pulse data indication from at least one of the channels.
9. A voting structure for use in pulse analysis apparatus, said voting structure comprising a plurality of electrically parallel channels, means at the input pulse data that are directed to all other of said channels, wherein said voting structure further includes means for producing an indicating representing the meat-sizes of those pulses in each channel, pulse comparison and exclusion circuitry responsive to the mean size indication of each channel for comparing such mean size indications from said channels against each other and for excluding any pulse-derived output from at least one of said channels subsequent to an unfavorable mean size indication comparison for that channel.
10. A voting structure according to claim 9 in which said mean size indication producing means comprises means for obtaining the mean amplitude of the pulses which have been directed into each respective channel.
11. A voting structure according to claims 9 or 10 in which said mean size indication producing means comprises an MCV system in each of said channels.
12. A voting structure according to claim 11 in which each said MCV system has an input connected to receive pulses from a particle study apparatus of the type wherein a fluid sample containing particles is passed from one body of electrolyte through a particle scanning aperture to another body of electrolyte.
13. A voting structure according to claim 12 in
14. A voting structure according to claim 9 in which said comparison and exclusion circuitry comprises in each channel: an absolute differential amplifier permutatively coupled to receive the mean size indications for its channel and another of said channels, a threshold . circuit coupled to the output of each said amplifier, and logic gate means permutatively connected to the outputs of all of said threshold circuits.
15. A voting structure according to claim 14 which further comprises: output signal averaging means coupled for receiving the mean size indications of all of said channels, and voltage dividing means coupled between the output of said averaging means and an input to said threshold circuit of each said channel, for establishing a limit of acceptance for the comparison by said comparison and exclusion circuitry.
16. A voting structure according to claims 14 or 15 and further comprising an analog signal gate coupled at the output end of each said channel, each said analog signal gate having one input coupled to the output of one of said logic gates a-nd another input directly coupled to the output of said mean size indication producing means for that channel.
17. A voting structure according to claim 9 which further comprises an additional plurality of channels, being connected in parallel to a specific one of the first mentioned plurality of parallel channels and having an input for receiving the pulses that are directed to such one channel, each channel of said additional plurality of channels comprising in series connection: a threshold circuit, pulse accumulating means and an analog signal gate; each said analog signal gate having another input connected to the output of said pulse comparison and exclusion circuitry of its corresponding first mentioned channel? whereby, the pulse data which are applied to any excluded of said first mentioned channels will be excluded from defining an output from the corresponding associated additional channel.
18. A voting structure according to claim 17 wherein the output of each said threshold circuit also is coupled to an input of said indication producing means of its corresponding channel, for defining an amplitude limit to the pulses received by said first mentioned channels „
19. A voting method for excluding data output from a malfunctional electrical channel within a system having at least three parallel channels, substantially as described in the foregoing specification and illustrated in the accompanying drawing.
20. A voting structure for use in pulse analysis specification and illustrated in the accompanying drawing.
IL45041A 1973-06-29 1974-06-17 Method and apparatus for multichannel voting IL45041A (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 (2)

Publication Number Publication Date
IL45041A0 IL45041A0 (en) 1974-09-10
IL45041A true IL45041A (en) 1976-07-30

Family

ID=23479047

Family Applications (1)

Application Number Title Priority Date Filing Date
IL45041A IL45041A (en) 1973-06-29 1974-06-17 Method and apparatus for multichannel voting

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)

Families Citing this family (12)

* 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
US6150849A (en) * 1995-06-02 2000-11-21 Tuemer; Tuemay O. Readout chip for nuclear applications
US6720812B2 (en) 1995-06-02 2004-04-13 Nova R&D, Inc. Multi-channel integrated circuit
US5696458A (en) * 1995-06-02 1997-12-09 Nova R&D, Inc. Front end data readout chip
GB9624096D0 (en) 1996-11-20 1997-01-08 Microbial Systems Ltd 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
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

Also Published As

Publication number Publication date
IT1013485B (en) 1977-03-30
DE2429204B2 (en) 1980-07-31
SE399791B (en) 1978-02-27
NL7408026A (en) 1974-12-31
GB1463110A (en) 1977-02-02
JPS5548358B2 (en) 1980-12-05
US3863056A (en) 1975-01-28
FR2235536B1 (en) 1976-10-15
JPS5038574A (en) 1975-04-10
IL45041A0 (en) 1974-09-10
FR2235536A1 (en) 1975-01-24
DE2429204C3 (en) 1981-04-30
SE7407965L (en) 1974-12-30
DE2429204A1 (en) 1975-01-16
CA999653A (en) 1976-11-09

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