Demand meter having load profile recording capabilities
First Claim
1. A device for metering electricity comprising:
- a measurement scheme for generating measured signals indicative of a quantitative value of electricity being metered;
a signal processor system responsive to said measured signals, said system comprising a digital signal processor and a microcomputer coupled to said digital signal processor, said system further comprising a memory for storing signals including program signals defining an executable algorithm for calculating electricity energy signals; and
a load profile recorder for recording the electricity energy signals in discrete time intervals, inputs for configuring said load profile recorder being transported to said recorder in a standard table format, said inputs comprising at least one of a number of channels, an interval size, quantities to be recorded, and channel scalar and divisor;
said microcomputer programmed to transmit the electricity energy signals to said load profile recorder at predetermined time intervals, said load profile recorder comprising a processor programmed to store electricity energy signals; and
a meter enclosure, said measurement scheme, said signal processor system, and said load profile recorder located at least substantially within said enclosure.
0 Assignments
0 Petitions
Accused Products
Abstract
A demand electronic electricity meter having load profile recording capabilities is presented. Load profile recording requires memory for storing the recorded information, whereby either on-board memory or external memory is required. Load profile parameters include the number of channels (e.g., 1, 2 or more channels), interval size (e.g., 1, 5, 10, 15, 30 or 60 minutes), quantities to be recorded (e.g., kWh and kvarh, kVAh, or Qh) and channel scalar/divisor (e.g., for each channel, a 2 byte divisor and a 2 byte scalar). With two channels, only two quantities are available for recording, kWh and the one other quantity that the meter has been configured to record, (e.g., kvarh, KVAh, or kQh). For each quantity selected, snapshots of the corresponding total accumulator; (i.e. total kWh and total kvarh, kVAh or kQh) are automatically maintained.
-
Citations
28 Claims
-
1. A device for metering electricity comprising:
-
a measurement scheme for generating measured signals indicative of a quantitative value of electricity being metered; a signal processor system responsive to said measured signals, said system comprising a digital signal processor and a microcomputer coupled to said digital signal processor, said system further comprising a memory for storing signals including program signals defining an executable algorithm for calculating electricity energy signals; and a load profile recorder for recording the electricity energy signals in discrete time intervals, inputs for configuring said load profile recorder being transported to said recorder in a standard table format, said inputs comprising at least one of a number of channels, an interval size, quantities to be recorded, and channel scalar and divisor; said microcomputer programmed to transmit the electricity energy signals to said load profile recorder at predetermined time intervals, said load profile recorder comprising a processor programmed to store electricity energy signals; and a meter enclosure, said measurement scheme, said signal processor system, and said load profile recorder located at least substantially within said enclosure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for metering electricity using a meter including a digital signal processor for generating digital data representative of energy consumed by a load, a microcomputer coupled to the digital signal processor, and a load profile recorder coupled to the microcomputer, said method comprising the steps of:
-
transporting to the load profile recorder inputs for configuring the recorder, the inputs being transported in a standard table format, the inputs comprising at least one of a number of channels, a time interval size, quantities to be recorded, and channel scalar and divisor; generating, in the digital signal processor, digital measurement signals indicative of a quantitative value of electricity being metered; transmitting the digital signal measurement signals to the microcomputer; processing, in the microcomputer, the digital measurement signals to generate electricity demand signals; transmitting, at preselected time intervals, the measurement signals to the load profile recorder; scaling, in the recorder, the measurement signals; and recording, in the recorder, at least the scaled electricity demand signals in discrete time intervals. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. An electricity meter for measuring electricity and generating electricity energy signals in response thereto, the meter including a microcomputer and a meter enclosure, wherein the improvement comprises:
a load profile recorder located within the meter enclosure and comprising a processor, said processor electrically coupled to the microcomputer for recording electricity energy signals in discrete time intervals, said load profile recorder comprising a processor programmed to scale the energy signals and to store at least the scaled signals, inputs for configuring said load profile recorder being transported to said recorder in a standard table format, said inputs comprising at least one of a number of channels, an interval size, quantities to be recorded, and channel scalar and divisor. - View Dependent Claims (17, 18, 19)
-
20. A demand only electronic register for measuring electricity and generating electricity demand signals in response thereto, wherein the improvement comprises:
a load profile recorder for recording electricity demand signals in discrete time intervals, said load profile recorder comprising a processor and a memory, said processor programmed to store demand signals in said memory, inputs for configuring said load profile recorder being transported to said recorder in a standard table format, said inputs comprising at least one of a number of channels, an interval size, quantities to be recorded, and channel scalar and divisor. - View Dependent Claims (21, 22, 23)
-
24. A device for metering electricity comprising:
-
a measurement scheme comprising a digital signal processor for generating measured signals indicative of a quantitative value of electricity being metered; and a signal processor system responsive to said measured signals, and having a memory for storing signals including program signals defining an executable algorithm for calculating electricity energy signals, said system comprising recorder for executing an executable algorithm for recording electricity energy signals in discrete time intervals, said recorder comprising a processor programmed to record energy signals, inputs for configuring said recorder being transported to said recorder in a standard table format, said inputs comprising at least one of a number of channels, an interval size, quantities to be recorded, and channel scalar and divisor; and a meter enclosure, said measurement scheme and said signal processor system located at least substantially within said enclosure. - View Dependent Claims (25, 26, 27, 28)
-
Specification