DIGITAL POWER METER SYSTEM AND, METHOD FOR ERROR DETECTING THEREOF

• Main Authors: HUR, KYEON, HAN, JAE HEE
• Format: Patent
• Language: English; Korean
• Published: 15.10.2012
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

PURPOSE: A digital watt-hour meter system and a method for detecting the malfunction of a digital watt-hour meter are provided to determine the malfunction of the system by storing electricity values in three kinds of areas and comparing the electricity values with each other. CONSTITUTION: A main processor(100) and a sub processor(200) detect a voltage and a current of a distribution network(20). A data storage module(300) stores an electricity value measured in a previous time frame of the main processor as an electricity value of a current time frame. A control module(400) compares electricity values stored in current time fames of the main processor, the sub processor, and the data storage module with each other. The control module determines the malfunction of the main processor and the sub processor according to the comparison result. [Reference numerals] (110,210) Voltage detecting unit; (114) Main processing unit; (120,220) Current detecting unit; (130,230) A/D converter; (142,240) Signal calculating unit; (150) Main memory; (160) Display unit; (170) Communication device; (20) Distribution network; (250) Sub memory; (300) Data storage module; (400) Control module