GB1495277A - Method of dynamic weighing - Google Patents

Method of dynamic weighing

Info

Publication number
GB1495277A
GB1495277A GB3303274A GB3303274A GB1495277A GB 1495277 A GB1495277 A GB 1495277A GB 3303274 A GB3303274 A GB 3303274A GB 3303274 A GB3303274 A GB 3303274A GB 1495277 A GB1495277 A GB 1495277A
Authority
GB
United Kingdom
Prior art keywords
function
natural frequency
weighing
speed
weight
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
GB3303274A
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 GB3303274A priority Critical patent/GB1495277A/en
Publication of GB1495277A publication Critical patent/GB1495277A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/14—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads
    • G01G19/20—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads for weighing unbalanced loads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
    • G01G19/04—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing railway vehicles
    • G01G19/045—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing railway vehicles for weighing railway vehicles in motion
    • G01G19/047—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing railway vehicles for weighing railway vehicles in motion using electrical weight-sensitive devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)

Abstract

1495277 Weighing electrically W & T AVERY Ltd 25 July 1975 [26 July 1974] 33032/74 Heading G1N(A) A method of dynamic weighing substantially as described in Specification 1123211 further comprises monitoring the value of a pre-selected parameter influencing the accuracy of weighing and varying the function f(t) and/or the duration T of the weighing period in dependence on the value said parameter. The function f(t), which may comprise a series of steps corresponding to different sampling rates, may have sections A, B, C successively eliminated as the speed of rolling stock passing over a weighbridge increases. This may be achieved by programming of the number of samples counter described in Specification 1123211. This method decreases the number of samples N taken during the weighing period so that the result of integration must be divided by N to obtain the static weight. Alternatively N may be maintained constant and the clockpulse generator (1123211) arranged to increase pulse frequency with speed, or the pulse rate divider (1123211) may be programmable with any one of a number of different functions f 1 (t), f 2 (t) etc. In applications where the natural frequency of the weighbridge provides the dominant error signal an instruction signal related to the natural frequency determines which of functions f 1 (t), f 2 (t) etc. is multiplied with the weight signal in filter 18; each function providing high attenuation at a different frequency. The functions may be stored in digital read-only memory devices ROM or may be generated by a function generator (30), Fig. 8 (not shown) in the form of a cosine series the coefficients of which are provided from a store (32) governed by the instruction signal. The systems of Figs. 7 (and 8) may also be used for other parameters such as speed. In a further embodiment the weight determined using a first function g(t) is used to calculate the natural frequency. If g(t) does not provide high attenuation the measurement is repeated using a second function f 1 (t). The new weight value is again used to calculate natural frequency and if necessary a third function f2(t) is used. Thus by a process of iteration a function providing high attenuation at the true natural frequency is arrived at.
GB3303274A 1975-07-25 1975-07-25 Method of dynamic weighing Expired GB1495277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3303274A GB1495277A (en) 1975-07-25 1975-07-25 Method of dynamic weighing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3303274A GB1495277A (en) 1975-07-25 1975-07-25 Method of dynamic weighing

Publications (1)

Publication Number Publication Date
GB1495277A true GB1495277A (en) 1977-12-14

Family

ID=10347616

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3303274A Expired GB1495277A (en) 1975-07-25 1975-07-25 Method of dynamic weighing

Country Status (1)

Country Link
GB (1) GB1495277A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021008A1 (en) * 1991-05-23 1992-11-26 Pad Lastceller Ulf Lundman Ab A method of weighing vehicles
WO2012101325A1 (en) * 2011-01-28 2012-08-02 Ponsse Oyj Method in the check weighing of a weighing system and software product and arrangement in the check weighing of a weighing system and materials handling equipment
RU2575474C2 (en) * 2011-01-28 2016-02-20 Понссе Ойй Method of test weighing in weighing system, software product, device of test weighing in weighing system and transport-loading equipment
CN112249905A (en) * 2020-11-02 2021-01-22 上海海事大学 Dynamic weighing method of crane based on K-means clustering and linear regression

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021008A1 (en) * 1991-05-23 1992-11-26 Pad Lastceller Ulf Lundman Ab A method of weighing vehicles
WO2012101325A1 (en) * 2011-01-28 2012-08-02 Ponsse Oyj Method in the check weighing of a weighing system and software product and arrangement in the check weighing of a weighing system and materials handling equipment
CN103328943A (en) * 2011-01-28 2013-09-25 蓬塞有限公司 Method in the check weighing of a weighing system, software product and arrangement in the check weighing of a weighing system and materials handling equipment
RU2575474C2 (en) * 2011-01-28 2016-02-20 Понссе Ойй Method of test weighing in weighing system, software product, device of test weighing in weighing system and transport-loading equipment
US9297690B2 (en) 2011-01-28 2016-03-29 Ponsse Oyj Method in the check weighing of a weighing system and software product and arrangement in the check weighing of a weighing system and materials handling equipment
CN112249905A (en) * 2020-11-02 2021-01-22 上海海事大学 Dynamic weighing method of crane based on K-means clustering and linear regression

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee