GB1158318A - Improved Weight Measuring Apparatus. - Google Patents

Improved Weight Measuring Apparatus.

Info

Publication number
GB1158318A
GB1158318A GB40752/65A GB4075265A GB1158318A GB 1158318 A GB1158318 A GB 1158318A GB 40752/65 A GB40752/65 A GB 40752/65A GB 4075265 A GB4075265 A GB 4075265A GB 1158318 A GB1158318 A GB 1158318A
Authority
GB
United Kingdom
Prior art keywords
indication
digit
eye
electrical signal
analogue
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
GB40752/65A
Inventor
Jan Leonowicz
John Moorhouse Chilton
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.)
Avery Weigh Tronix Ltd
Original Assignee
W&T Avery Ltd
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 W&T Avery Ltd filed Critical W&T Avery Ltd
Priority to GB40752/65A priority Critical patent/GB1158318A/en
Publication of GB1158318A publication Critical patent/GB1158318A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G01G3/142—Circuits specially adapted therefor
    • G01G3/145—Circuits specially adapted therefor involving comparison with a reference value
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G01G3/142—Circuits specially adapted therefor
    • G01G3/147—Circuits specially adapted therefor involving digital counting
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/001—Analogue/digital/analogue conversion

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

1,158,318. Voltage measurement. W. & T. AVERY Ltd. Sept.26, 1966 [Sept.24, 1965], No.40752/65. Heading G1U. [Also in Divisions G4 and H3] In a weight measuring system in which an electrical signal analogue of the weight to be measured is produced, the electrical signal is converted to a digital representation in a fairly conventional manner (see Division G4) and an analogue indication of the electrical signal is provided when its value is below that corresponding to the least positive digital indication. This enables zero drift in the weighing system to be observed. The analogue indication may be provided by a centre zero meter or, in a much better system, by a magic eye indicator. When there is a zero digital indication, i.e. the input lies between Π1 digit, an AND gate AG responding to all the digit zeros switches on a transistor 18 to apply reverse volts to a diode 11. This ensures that the input signal (from amplifier A) is applied via the emitter follower 1 and amplifier stages 2, 3 to a magic eye indicator 16. The size of the eye is adjustable on potentiometer 7 so that it is halfway along the tube at accurate balance, while resistors 5 and 6 control the gain of the system so that the eye is fully open or closed at ΢ digit. Capacitor 17 provides a low pass filtering characteristic.
GB40752/65A 1965-09-24 1965-09-24 Improved Weight Measuring Apparatus. Expired GB1158318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB40752/65A GB1158318A (en) 1965-09-24 1965-09-24 Improved Weight Measuring Apparatus.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB40752/65A GB1158318A (en) 1965-09-24 1965-09-24 Improved Weight Measuring Apparatus.

Publications (1)

Publication Number Publication Date
GB1158318A true GB1158318A (en) 1969-07-16

Family

ID=10416441

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40752/65A Expired GB1158318A (en) 1965-09-24 1965-09-24 Improved Weight Measuring Apparatus.

Country Status (1)

Country Link
GB (1) GB1158318A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199593A1 (en) * 1972-09-19 1974-04-12 Sedeme

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199593A1 (en) * 1972-09-19 1974-04-12 Sedeme

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees