Electric energy meter is an important instrument of electric energy measurement. It is used earlier in China and has a long history of use. With the continuous development of China's economy, electric energy is applied more and more. Electric energy has become an important energy for human social life and development, and the accuracy of electric energy measurement is becoming higher and higher.  With the development of technology, As a substitute of traditional electricity meter, intelligent electricity meter has gradually entered ordinary people's homes.  What are the functions and communication methods of smart electricity meters?

I. What are the functions of smart electricity meters?  

The original distribution system at the smart meter end realizes remote electric control, charging and charging, and security control.  The systematic application of smart meters in the promotion of customer service orientation in apartments can solve:  

1. Dispute over the calculation of electricity charges;   

2. Solve the calculation problem of stepped electricity price;   

3. Reduce the input of operation manpower on behalf of expenses;   

4. Reduce the settlement of cash fees between offline households and butlers;   

5. Improve residents' perception of service;  

6. Solve the hidden safety problems caused by uncontrollable power consumption. 

II. What is the communication mode of smart electricity meter?  

1. RS485 communication meter reading

Supporting hardware: RS485+ electricity meter + collector Application Scenario: Applicable to the scenario where electricity meters are installed in a centralized manner, such as residential buildings, office buildings, and schools. 

Scheme features: one collector can read 32 electric meter data, with fast transmission speed, high data stability and low overall cost.  

2. Nb-iot /4G full wireless communication  

Supporting hardware: electricity meter + NB-iot /4G wireless module (the module is built into the electricity meter)  

Application Scenario: Applicable to the scenario where electricity meters are installed separately, such as supermarket, industrial park, villa, etc.  

Solution features: Electricity meter built-in NB-iot /4G wireless module, no wiring, no acquisition equipment, can be quickly installed, not limited by multiple stations.  

3. RF radio frequency communication  

Supporting hardware: electricity meter +RF module + collector (the module is built in the electricity meter)  

Application Scenario: Applicable to the scenario where electricity meters are installed separately, such as shops, parks, and factories.  

Program features: no communication costs, no wiring, stable signal transmission, strong anti-interference ability, a collector can read 128 meters of data.  

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