Patent
Power supply and power monitor for electric meter.
TLDR
In this paper, a non-volatile storage (64) is used to prevent writing of data to nonvolatile storages in the presence of noise or momentary power outages.Abstract:
An electronic register (46) for an electric meter includes a non-volatile storage (64) into which data is written upon the detection of an impending power outage. A sufficient quantity of electric energy is normally stored in a capacitor (c1) to continue operation of the electronic register (46) for long enough period of time to complete the writing of data to the non-volatile storage (46). In order to prevent writing of the data to non-volatile storage (64) in the presence of noise or momentary power outages, when the voltage in the capacitor (c1) decays to a point which indicates an impending power outage, a timer (84) is started. If the voltage is not restored before the end of the timing cycle of the timer (84), then the data is written to the non-volatile storage (64). If the voltage is restored before the end of the time cycle, then writing of the data to the non-volatile storage (64) is prevented.read more
Citations
More filters
Patent
High efficiency power converter
TL;DR: In this article, a power converter nearly losslessly delivers energy and recovers energy from capacitors associated with controlled rectifiers in a secondary winding circuit, each controlled rectifier having a parallel uncontrolled rectifier.
Patent
Storage capacitor power supply
TL;DR: In this paper, the authors proposed a long-lived, lightweight, and quickly and precisely charged storage capacitor power supply capable of stably supplying electric power to a load, which has a capacitor block consisting of capacitors connected in series, in parallel or in any combination of series and parallel.
Patent
Electronic watthour meter
TL;DR: In this paper, an electronic watthour meter is configurable to operate as several different types of Watthour meters for metering electrical energy from a variety of different electric utility services, and automatic scaling of line input currents is provided to scale the voltage input to an analog to digital converter over selected ranges such that low level and high level input signals are measured in an optimum range.
Patent
Integrated circuit with watchdog timer and sleep control logic which places IC and watchdog timer into sleep mode
TL;DR: In this paper, a watchdog function is used to monitor the microprocessor's activity and save power by shutting down many of the input-sensing circuits, and the watchdog function does not accept sleep commands unless it stands in the proper timing relationship to a signal on the strobe pin.
Patent
Power supply interruption detection and response system for a microcontroller
Andre Walker,Victor So +1 more
TL;DR: In this paper, a microcontroller power management system where the voltage of a power supply is monitored and the microcontroller central processing unit ("CPU") receives an interrupt signal when the supply voltage falls below a predetermined level.
References
More filters
Patent
Digital processing and calculating ac electric energy metering system
Johnston Paul M,Andras I. Szabo +1 more
TL;DR: In this paper, a metering system for electric utility power line measurements includes voltage and current signal inputs that are randomly sampled and converted to binary representations, and a system sequence controller and calculator provides programmed control for processing digital control and data signals and for producing digital calculations of electric energy parameters.
Patent
Programmable demand register with two way communication through an optical port and external reading devices associated therewith
Robert E. Brandyberry,Mark M. Forbes,David D. Gloyeski,Russell F. Greafnitz,Glen R. Phillips,Robert L. Straw,Kevin L. Stricker,William A. Szabela,Richard R. Webeck,Glenn A. Mayfield,William L. Vollmer +10 more
TL;DR: A Programmable Demand Register (PDR) with a multi-function externally programmable time-based measuring system is described in this paper, where an optical communication port is provided for bidirectional communication of data, said meter being capable of recordation of energy consumption in several different modes, according to the decision of the meter programmer.
Patent
Power failure memory support system
TL;DR: In this paper, the authors present an approach for retrieving data from a volatile memory in a data processing system in the event of a power supply failure by means of means for transferring the data to an external device.
Patent
Solid-state electrical-power demand register and method
TL;DR: In this paper, a solid-state demand register is described for determining the maximum electrical power demand made on an electric utility by a load, which employs a microprocessor, providing non-cumulative, cumulative, and continuous cumulative electrical-power demand measurement capabilities.
Patent
Apparatus for transferring data from a volatile main memory to a store unit upon the occurrence of an electrical supply failure in a data processing system
TL;DR: In this article, the authors describe an apparatus for transferring data from the main memory of a data processor to a peripheral permanent storage unit, such as a data recording holder driven by a driving device, in response to a failure of the main electrical supply to the data processor.