Automatic pairing method for Bluetooth circuit breaker and electric energy meter

Abstract

According to the invention, a method is implemented by utilizing the characteristic that an electric energy meter and a Bluetooth circuit breaker which are matched with each other are in the same power supply loop and the current consumed by the circuit breaker when a motor acts can only be detected by the electric energy meter matched with the circuit breaker. Moreover, the current value of the circuit breaker is relatively large when the motor acts, the average effective value can reach more than 40mA, the starting current which can be accurately measured by an electric energy meter meteringchip is 10-15mA, and the current value of the motor action is much larger than the starting current, so that the current change of the motor action can be accurately sampled by a new electric energymeter metering product, and feasibility is provided for the scheme. The beneficial effects of the invention are that: 1, the method just needs to set the embedded software of the Bluetooth circuit breaker and the electric energy meter, does not need to add a hardware circuit, is high in feasibility, and saves the cost; 2, the basic characteristic that the working current of the circuit breaker canonly be measured by the paired electric energy meter is utilized, so that the accuracy of a pairing algorithm is ensured; and 3, after preliminary confirmation is completed, verification is performedagain through a verification code, so that the pairing accuracy is ensured.

Description

technical field [0001] The invention relates to an automatic pairing method between a bluetooth circuit breaker and an electric energy meter. Background technique [0002] At present, there are mainly two types of user load switches for smart energy meters. One is the built-in magnetic latching relay for loads below 100A, and the other is an external miniature circuit breaker, which uses 220V as the control line for large loads. load control. [0003] With the popularization and application of smart energy meters, it is found that there is a big problem in the load switch, which ranks second in the proportion of operation failure types. Direct replacement of the entire meter, while the external miniature circuit breaker is controlled by 220V AC voltage, there are potential safety hazards and the possibility of user cheating. [0004] In response to the above situation, the State Grid Corporation of China plans to promote external circuit breakers with Bluetooth communicati...

AI Technical Summary

Problems solved by technology

However, this brings up another pairing problem during installation. There are multiple electric energy meters and circuit breakers in the same meter box. Although the MAC method of each other can be set separately, the problem can be solved, but there are setting errors, construction personnel need to configure a large number of handheld computers, and the technical level of construction personnel is very high, which is not conducive to popularization and application. The problem of automatic accurate pairing between