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US3860802A
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Method and apparatus for ascertaining a steady state value of a continuously variable measured quantity
Assignee: Sartorius Werke GmbH
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Filing: 1973-10-11
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Granted: 1975-01-14
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Expires: 1993-10-11
Abstract
Abstract Method and apparatus for ascertaining a steady state value of a continuously variable measured quantity, for example, by comparing three consecutive sample values (A,B,C) of which one is reported if two each differ by less than a prescribed difference, and repeating the comparison, if necessary, with fresh sample values until the difference condition is satisfied.
Inventors
- 👤 Erich Emil Karl Knothe
- 👤 Franz-Josef Melcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:31
CPC Classifications
G; G01; G01G; G01G7/00; G01G7/02; G01G7/04; G01G23/00; G01G23/18; G01G23/38; G01G23/46; Y; Y10; Y10S; Y10S177/00; Y10S177/03
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A method of digitally verifying steady state conditions, i.e., of ascertaining when a quantity which is continuously measured and reported by a measuring instrument attains a steady value after having undergone an abrupt change, which comprises comparing three consecutive sample values (A,B,C) of which one is reported if two values differ from each other by less than a prescribed difference, and repeating the comparison, if necessary, with fresh sample values until the difference condition is satisfied.
Claim 2
Independent Claim
76 words
A method of digitally verifying steady state conditions, i.e., of ascertaining when a quantity which is continuously measured and reported by a measuring instrument attains a steady value after having undergone an abrupt change, which comprises comparing three consecutive sample values (A,B,C) of which one is reported if two values differ from each other by less than a prescribed difference, and repeating the comparison, if necessary, with fresh sample values until the difference condition is satisfied.
Claim 3
Dependent Claim
61 words
A method according to claim 1 comprising comparing the first sample value (A) with the second sample value (B), storing one of these values if the difference is less than the prescribed difference, and then comparing a third (C) sample with the stored value and reporting one of the sample values if the difference is again less than the prescribed difference.
Claim 4
Dependent Claim
19 words
A method according to claim 1 wherein the time between two sample values that are compared is optionally adjustable.
Claim 5
Dependent Claim
18 words
A method according to claim 1 wherein the reporting output is blocked until the comparison conditions are satisfied.
Claim 6
Dependent Claim
118 words
Apparatus for performing a method of digitally verifying steady state conditions, i.e., of ascertaining when a quantity which is continuously measured and reported attains a steady value after having undergone an abrupt change, the apparatus comprising digital measurement output means of a measuring instrument, memory unit means having an input and an output, comparator means having first and second inputs and an output, and reporting means, the digital measurement output means being arranged for communication with the input of the memory unit means and the first input of the comparator, the output of the memory unit means being connected to the second input of the comparator, and the output of the comparator being connected to the reporting means.
Claim 7
Dependent Claim
118 words
Apparatus for performing a method of digitally verifying steady state conditions, i.e., of ascertaining when a quantity which is continuously measured and reported attains a steady value after having undergone an abrupt change, the apparatus comprising digital measurement output means of a measuring instrument, memory unit means having an input and an output, comparator means having first and second inputs and an output, and reporting means, the digital measurement output means being arranged for communication with the input of the memory unit means and the first input of the comparator, the output of the memory unit means being connected to the second input of the comparator, and the output of the comparator being connected to the reporting means.
Claim 8
Dependent Claim
31 words
Apparatus according to claim 5 wherein a sequence control or programme control unit is connected to the digital measurement means, the memory unit means, the comparator means, and the reporting means.
Claim 9
Dependent Claim
24 words
An apparatus as claimed in claim 5 wherein said measuring instrument comprises a weighing machine or balance provided with said digital measurement output means.
References Cited (Backward Citations)
US3674097A
Cited
US3789937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |