GB944664A - Apparatus for continuously integrating the weight of material carried on a conveyor belt - Google Patents

Apparatus for continuously integrating the weight of material carried on a conveyor belt

Info

Publication number
GB944664A
GB944664A GB3270361A GB3270361A GB944664A GB 944664 A GB944664 A GB 944664A GB 3270361 A GB3270361 A GB 3270361A GB 3270361 A GB3270361 A GB 3270361A GB 944664 A GB944664 A GB 944664A
Authority
GB
United Kingdom
Prior art keywords
pulse
capacitor
voltage
input
dependent
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
GB3270361A
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.)
Telephone and Electrical Inddustries Pty Ltd
Original Assignee
Telephone and Electrical Inddustries Pty 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
Priority claimed from AU67482/60A external-priority patent/AU242946B2/en
Application filed by Telephone and Electrical Inddustries Pty Ltd filed Critical Telephone and Electrical Inddustries Pty Ltd
Publication of GB944664A publication Critical patent/GB944664A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/14—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers using totalising or integrating devices
    • G01G11/16—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers using totalising or integrating devices being electrical or electronic means
    • G01G11/18—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers using totalising or integrating devices being electrical or electronic means using digital counting
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06J—HYBRID COMPUTING ARRANGEMENTS
    • G06J1/00—Hybrid computing arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/10—Combined modulation, e.g. rate modulation and amplitude modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Automation & Control Theory (AREA)
  • Evolutionary Computation (AREA)
  • Fuzzy Systems (AREA)
  • Software Systems (AREA)
  • Control Of Conveyors (AREA)

Abstract

944,664. Pulse modulation circuits. TELEPHONE & ELECTRICAL INDUSTRIES PTY Ltd. Sept. 12, 1961 [Dec. 13, 1960], No. 32703/61. Heading H4L. [Also in Division G1] A pulse width modulator for use in a conveyer belt aggregate weight measuring apparatus (Division G1) has one input which is a voltage of belt deflection dependent magnitude and a second input which comprises pulses the rate of which is dependent on belt speed. The modulator 11 (Fig. 3) comprises an emitter follower stage TR1 the input voltage c (Fig. 2) of which appears at the resistor R1 so that when a transistor TR2 is switched " on " by a pulse from the belt speed indicator (waveform d), a capacitor C is charged to the instantaneous voltage at R1, and at the termination of the pulse, the capacitor C discharges linearly through TR3 and R3 in a time proportional to the instantaneous voltage. Transistors TR5 and TR6 are arranged so that when the emitter of TR5 rises above earth potential, TR5 is switched " on " and TR6 " off " this occurring as soon as capacitor C charges through TR2, and until C is completely discharged. The output of transistor TR6 is thus a series of negative pulses of a duration proportional to the weight dependent input voltage to TR1, and of a frequency equal to that of the belt speed indicator output signal to TR2 (waveform e).
GB3270361A 1960-12-13 1961-09-12 Apparatus for continuously integrating the weight of material carried on a conveyor belt Expired GB944664A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU67482/60A AU242946B2 (en) 1960-12-13 Apparatus fdr continuously integrating toe weight of material carried ona conveyor belt

Publications (1)

Publication Number Publication Date
GB944664A true GB944664A (en) 1963-12-18

Family

ID=3751744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3270361A Expired GB944664A (en) 1960-12-13 1961-09-12 Apparatus for continuously integrating the weight of material carried on a conveyor belt

Country Status (1)

Country Link
GB (1) GB944664A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963944A (en) * 1973-11-23 1976-06-15 Cemo Instruments Ab Device for converting an analogous signal into a pulse-length-modulated pulse series

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963944A (en) * 1973-11-23 1976-06-15 Cemo Instruments Ab Device for converting an analogous signal into a pulse-length-modulated pulse series

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