| 摘要 |
FIELD: measurement equipment.SUBSTANCE: invention relates to metrology and may be used to control energy quality. A device comprises a voltage transformer, signal level matchers by phases A, B and C, an ADC of phases A, B and C; temporary storage registers, a reference value storage register, circuits of comparison of the measurement result with the reference value, a mechanism of sample intervals setting, a reference value shaper for analogue-digital converters. The device also comprises a frequency measurement channel, which includes a level matcher, a mechanism of sample intervals setting, a reference voltage shaper, a level comparator, a timer-counter, circuits of comparison with the reference value. The channel for measurement of battery voltage comprises comparators of level by lower and upper voltage limit, reference voltage shapers, circuits of fault detection. Also the device comprises a channel of real-time clock. The device is controlled with a control unit that controls a controller of recording into a memory. Data arrives either to an electrically reprogrammable nonvolatile memory or to a controller of USB interface and RS-232 interface. The indication unit is made in the form of a panel of single indicators.EFFECT: expansion of functional capabilities of a device.4 cl, 1 dwg |
