FR2442431A1 - Weight sensor power supply for moving material - has trapezoidal waveform processing circuitry and provides signals proportional to weight and speed of flow of material - Google Patents

Weight sensor power supply for moving material - has trapezoidal waveform processing circuitry and provides signals proportional to weight and speed of flow of material

Info

Publication number
FR2442431A1
FR2442431A1 FR7833633A FR7833633A FR2442431A1 FR 2442431 A1 FR2442431 A1 FR 2442431A1 FR 7833633 A FR7833633 A FR 7833633A FR 7833633 A FR7833633 A FR 7833633A FR 2442431 A1 FR2442431 A1 FR 2442431A1
Authority
FR
France
Prior art keywords
weight
speed
circuit
output
power supply
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.)
Withdrawn
Application number
FR7833633A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7833633A priority Critical patent/FR2442431A1/en
Publication of FR2442431A1 publication Critical patent/FR2442431A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/94—Generating pulses having essentially a finite slope or stepped portions having trapezoidal shape
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/04—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having electrical weight-sensitive devices
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Conveyors (AREA)

Abstract

The weight sensor circuit has a square wave generator which supplies a sawtooth generator whose output is limited. A power circuit is used to drive the weight sensors. The sawtooth generator also drives a threshold circuit whose valve is compared with a reference voltage. The threshold circuit output controls analogue gating circuits. The power circuit is also connected via an impedance matching circuit and gate to a memory whose output is proportional to the speed of the conveyor. A comparator connected to the memory output controls the square wave generator. The sensor output is connected via an impedance matching circuit and gate to a memory to provide a dc output signal proportional to speed and weight of material flow. The arrangement avoids complex transformation and rectification of an AC signal.
FR7833633A 1978-11-22 1978-11-22 Weight sensor power supply for moving material - has trapezoidal waveform processing circuitry and provides signals proportional to weight and speed of flow of material Withdrawn FR2442431A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7833633A FR2442431A1 (en) 1978-11-22 1978-11-22 Weight sensor power supply for moving material - has trapezoidal waveform processing circuitry and provides signals proportional to weight and speed of flow of material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7833633A FR2442431A1 (en) 1978-11-22 1978-11-22 Weight sensor power supply for moving material - has trapezoidal waveform processing circuitry and provides signals proportional to weight and speed of flow of material

Publications (1)

Publication Number Publication Date
FR2442431A1 true FR2442431A1 (en) 1980-06-20

Family

ID=9215465

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7833633A Withdrawn FR2442431A1 (en) 1978-11-22 1978-11-22 Weight sensor power supply for moving material - has trapezoidal waveform processing circuitry and provides signals proportional to weight and speed of flow of material

Country Status (1)

Country Link
FR (1) FR2442431A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB621752A (en) * 1946-07-09 1949-04-19 Graham John Scoles Improvements relating to indicating and recording apparatus
FR1431478A (en) * 1964-04-17 1966-03-11 Messen Jaschin G A Method for the electrical measurement of the variation of a physical quantity transformed into a variation in length
US3753259A (en) * 1971-08-30 1973-08-14 R Donovan Cooler and freezer failure warning system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB621752A (en) * 1946-07-09 1949-04-19 Graham John Scoles Improvements relating to indicating and recording apparatus
FR1431478A (en) * 1964-04-17 1966-03-11 Messen Jaschin G A Method for the electrical measurement of the variation of a physical quantity transformed into a variation in length
US3753259A (en) * 1971-08-30 1973-08-14 R Donovan Cooler and freezer failure warning system

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Legal Events

Date Code Title Description
ST Notification of lapse