Abstract: A utility meter includes a consumption measurement unit for generating consumption data, a meter processor, and a RTC for time stamping the consumption data to provide interval meter data during interval meter operation. A memory stores the interval meter data. The meter processor implements/initiates responsive to a power loss that suspends RTC operation, switching from interval to relative time operation where consumption data is stored as relative consumption data together with a relative time as relative meter data. Responsive power restoration and receiving a current time, the meter switches from relative time to interval meter operation. The restoration time is calculated using the current and an elapsed time since the restoration. The time of restoration and current time is used to generate calculated times. The consumption data from relative time operation is time stamped with the calculated times to provide time-corrected relative meter data that is stored to the memory.

Abstract: A utility meter includes a consumption measurement unit for generating consumption data, a meter processor, and a RTC for time stamping the consumption data to provide interval meter data during interval meter operation. A memory stores the interval meter data. The meter processor implements/initiates responsive to a power loss that suspends RTC operation, switching from interval to relative time operation where consumption data is stored as relative consumption data together with a relative time as relative meter data. Responsive power restoration and receiving a current time, the meter switches from relative time to interval meter operation. The restoration time is calculated using the current and an elapsed time since the restoration. The time of restoration and current time is used to generate calculated times. The consumption data from relative time operation is time stamped with the calculated times to provide time-corrected relative meter data that is stored to the memory.

Abstract: A system for monitoring an comprises a hive monitor configured for measuring and transmitting data on hive parameters, a data collector communicating with the hive monitor for logging measurement data received from the hive monitor, the data collector configured for transmitting the logged data, and a central database repository communicating with the data collector for storing the logged data received from the data collector. The hive monitor comprises a controller, a power source for powering the controller, a load cell for measuring the weight of the hive, means for measuring parameters of the hive, and means for communicating measured data.

Abstract: Methods and devices to determine values relating to metering a power line signal. A power line signal may be sampled by defining accumulation intervals associated with the power line signal. An accumulation interval may comprise sample periods. Samples are taken during sample periods. Values associated with the samples are determined for each sample period. A sample period may be associated with one or more accumulation intervals. When a sample period belongs to one accumulation interval, the sample period may be allocated to the one accumulation interval. When a sample period is associated with more than one accumulation interval, portions of the sample period may be allocated to the accumulation intervals to which the portions belong. Values determined for a sample period may be allocated to one or more accumulation intervals by allocating the values in relation to the allocation of the sample periods.

Abstract: The phase shift in an electronic energy meter is compensated for by obtaining temperature and frequency readings in the meter and using these readings in a digital signal processor (DSP) residing within the electronic energy meter. The frequency and temperature compensation is performed to each phase calibration and the result is stored in the DSP. To reduce the possible influence of noise in the system, the compensated DSP values are filtered to provide a smoothing of the data.