Three Phase Multi Tariff Lora Smart Meter Remote Meter Reading in
Measured AC voltage and current have been sampled and transported
to professional metering chip, after digital processing, they have
been changed to the pulse signal, which in direct proportion to
active power, and then sent to microprocessor. Microprocessor would
accumulate the pulse signal according to the tariff, then get total
power and tariff power and put them in register. At the same time,
the microprocessor finishes the function of display and changeover
with external messages. Please take attention to the Figure 1
- Take advanced professional integrated circuit and SMT, hot air
reflow soldering and wave soldering as technical design, which can
make sure of reliable quality.
- Take three units isolated power for metering unit, data processing
unit and communication interface unit. All the output signals are
handled by optoelectronic isolation, which can increase
Electromagnetic Compatibility, and also confirm the stable working
for metering unit, that will not influence by communication
- Wide voltage range from 154V to 265V, and won’t be damaged even on
418V, which upgrade its environmental suitability.
- Build in “Watch Dog” design for microprocessor, to promise for the
well working of CPU. Triple backup for metering data. The data are
safe even in harsh conditions.
- Fully sealed dustproof and waterproof design, material of cover has
excellent flame retardant and anti-corrosion, anti-aging
- Build in clock circuit with temperature compensation function, the
function can also work when power off and get power source from
battery, to make sure of the high processing precision of clock.
- With standard interface of Lora communication module, support for