| 摘要 |
A single electricity meter (1) measures the consumption of energy of a plurality of consumers (V1 to V4 ) and a pulse generator (3) produces pulses at a rate proportional to the total power consumed (P Fig 2). When a consumer (V1 to V4) is switched on and off, the pulse rate performs a jump which is proportional to the power of the consumer, and processing apparatus (2) detects which consumer is involved and registers the switched-on time of the consumer. After the expiry of a measurement period, the energy consumption is calculated (2) for each consumer and can be called up to a display (9 Fig 3 not shown). <IMAGE> |
