On November 14, 2017, Tianjin Sigma Electric Co., Ltd. applied for a national invention authorized patent-a smart metering transmission system for electric meters. The utility model relates to an electric meter, in particular to an intelligent metering transmission system of the electric meter. The electric energy meter is an electric power metering device that every household has. The traditional electric energy meter can only measure the electricity consumption. Therefore, in our daily life, the mechanical electric energy meter that existed widely is gradually replaced by the electronic electric energy meter. , The reason is attributed to the former's stability, accuracy, sensitivity, linear dynamics, power consumption and Other parts are far inferior to the latter, but the existing electric meters still have many shortcomings in function, their functions are relatively single, and there is no power failure protection Function, if there is a power failure, the data in the registers in the RAM, CPU and other chips in the machine will be lost, so it needs improvement. The purpose of the present invention is to provide a smart metering transmission system for electric meters to solve the problems raised in the background art. In order to achieve the above objectives, the present utility model provides the following technical solutions: a smart metering transmission system, including a signal acquisition module, SD card, metering chip, real-time clock, password lock, power supply module, wireless communication module, display, query buttons and Load control module, the signal output end of the signal acquisition module is connected to the metering chip, the metering chip is also connected to the control center, and the control center is also connected to the SD card, real-time clock, password lock, wireless communication module, display, power module and load In the control module, the code lock is also connected with a query button. As a preferred solution of the utility model: the control center is an MSP430F427 single-chip microcomputer. The model of the metering chip is ADE7755. The load control module is a relay. The query key is a matrix keyboard. The wireless communication module is a GPRS module. Compared with the prior art, the utility model has the following beneficial effects: the utility model's smart metering transmission system has a simple structure, fewer components, and adds a code lock as an anti-theft module. Only the correct input of the code can use the related operations of the electric energy meter. Using the combination of a single-chip microcomputer and an electric energy measurement chip, real-time collection and statistics of electric energy, and wireless transmission, improve the degree of intelligence and effectively reduce the workload of electric workers. Icom antenna tunerm,Hytera Digital Mobile Radio,Radio Hytera Md785,Hytera Dmr Mobile Radio Guangzhou Etmy Technology Co., Ltd. , https://www.gzdigitaltalkie.com![[New patent introduction] A smart metering transmission system for electric meters](http://i.bosscdn.com/blog/pI/YB/AF/tO8GeAVw_LAACM0J7noQY287.jpg)
The picture shows the block diagram of the smart meter transmission system