POWER AND ENERGY METERING DEVICE Russian patent published in 1999 - IPC

FIELD: automated energy control systems for multichannel network. SUBSTANCE: device has analog-to-digital converter, multiplexers whose inputs are connected with outputs of voltage and current instrument transducers, respectively. Output of analog-to-digital converter is connected with input of data processing unit. Outputs of multiplexers are connected to analog input of interface unit parallel to each other. Analog output of interface unit is connected with input of data processing unit which reads out instantaneous values of current and voltage used to calculate active, total and receive powers. EFFECT: enlarged operating capabilities making it possible to measure digital and analog signals. 2 dwg