Communications: electrical – Systems – Selsyn type
Patent
1994-02-14
1997-06-03
Hofsass, Jeffery
Communications: electrical
Systems
Selsyn type
34087002, 34087003, 34087005, 36446411, H04M 1104
Patent
active
056358954
ABSTRACT:
A remote electrical power meter display system for indicating to a consumer the actual costs associated with electrical power use includes two units: a wattmeter/transmitter for detecting instantaneous power consumption, and a remote reading unit for displaying the cost of electrical power at the instantaneous rate of power consumption. The wattmeter/transmitter includes an inductive coil pickup operatively connected to each hot lead of the utility service of a premises installation, and a voltage pickup is coupled to each hot lead and ground to detect the voltage delivered to the customer installation. A sample and hold circuit converts the voltage and current values to digital signals and feeds them to a calculator device which generates an instantaneous power use signal. This signal is fed to a carrier current transmitter which generates a coded carrier current signal indicative of the power consumption that is fed into the wiring of the customer installation to be transmitted throughout the customer's premises. The remote reading unit is plugged into any power outlet in the premises to provide a display of the cost of power consumption of the entire customer installation at any instant. The remote reading unit includes a carrier current receiver that decodes the signal from the wattmeter and a clock/calendar module and a power cost look-up table that stores power rate data as a function of time of day and date. The power rate data and power consumption data are fed to a calculator device, which generates a signal indicative of the cost of power used at the instant of sampling and transmits the signal to a display device. The sample and hold circuit is operated reiteratively and frequently, to inform the consumer on a continuing basis of the cost of power consumed at the customer's premises.
REFERENCES:
patent: 4803632 (1989-02-01), Frew et al.
Hofsass Jeffery
Pope Daryl C.
Zimmerman Harris
LandOfFree
Remote power cost display system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Remote power cost display system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remote power cost display system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-394285