US4361872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring apparatus for determining the effective value of the power demand of an energy consumer over a period of calculation
Assignee: Siemens Building Technologies AG
•
Filing: 1980-06-12
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Granted: 1982-11-30
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Expires: 2000-06-12
Abstract
Abstract In a measuring apparatus for determining the effective value of the power demand of an energy consumer over a period of calculation, a pulse generator 4 associated with a consumption meter 3 produces fixed quantity pulses. A measuring and calculating means 6 forms measurement values which are proportional to the reciprocal of the time intervals between the fixed quantity pulses and which are summed in a summing means 7. An evaluation means 9, which is in communication with the summing means 7 by way of a communication channel 8, forms the effective value P eff from the sum of the measurement values. The measuring and calculating means 6 may comprise a microprocessor.
Inventors
- 👤 Alfred Spalti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:05
CPC Classifications
G; G01; G01R; G01R21/00; G01R21/007
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
A measuring apparatus for determining the effective value of the power of an energy consumer over a period of calculation, the apparatus comprising; a pulse generator associated with a consumption meter, for producing fixed quantity pulses each of which represents the consumption of a predetermined fixed quantity of energy; a measuring and calculating means connected to the pulse generator, for forming measurement values which are proportional to the reciprocal of the time intervals between the individual fixed quantity pulses; a summing means for summing the measurement values; and an evaluation means for forming the effective value P eff of the power in accordance with the relationship: ##EQU11## wherein E o denotes the fixed quantity of energy, T denotes the duration of the period of calculation, and Z denotes the sum of the measurement values.
Claim 2
Dependent Claim
134 words
A measuring apparatus for determining the effective value of the power of an energy consumer over a period of calculation, the apparatus comprising; a pulse generator associated with a consumption meter, for producing fixed quantity pulses each of which represents the consumption of a predetermined fixed quantity of energy; a measuring and calculating means connected to the pulse generator, for forming measurement values which are proportional to the reciprocal of the time intervals between the individual fixed quantity pulses; a summing means for summing the measurement values; and an evaluation means for forming the effective value P eff of the power in accordance with the relationship: ##EQU11## wherein E o denotes the fixed quantity of energy, T denotes the duration of the period of calculation, and Z denotes the sum of the measurement values.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 1 wherein the summing means is a counting mechanism which is in communication with the evaluation means by way of a communication channel.
Claim 4
Dependent Claim
14 words
Apparatus according to claim 2 wherein the measuring and calculating means comprises a microprocessor.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 1 wherein the measuring and calculating means comprises a microprocessor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |