Integrated charging and acquisition terminal

Abstract

The invention relates to an integrated charging and acquisition terminal, belonging to an electronic device for charging and data acquisition of an intelligent electric meter. The integrated charging and acquisition terminal mainly comprises a display unit, an IC (integrated circuit) card interface circuit, an encryption and authentication interface circuit, an RS485 interface circuit and a powercarrier circuit which are connected with a single chip microcomputer, wherein the IC card interface circuit and the encryption and authentication interface circuit are formed by adopting an electrostatic protection chip ESDA6V1-5W6 and an ESAM (embedded secure access module) chip; the RS485 interface chip in the RS485 interface circuit is connected with the single chip microcomputer by two optical coupling circuits; a thermistor, a piezoresistor and another thermistor are connected between an A end and a B end of the RS485 interface chip in sequence and in series; and the A end and the B end are respectively connected with a two-way transient diode and then are grounded; and the power carrier circuit mainly comprises a three-phase carrier module. The integrated charging and acquisition terminal integrates an IC card interface, a power carrier interface and an RS485 interface and has the characteristics of convenience in charging, electricity utilization inquiry and data forwarding fora user and the like.

Description

technical field [0001] The invention is an electronic device used for charging and data collection of a smart meter, and particularly relates to an integrated charging and collecting device for a smart meter. Background technique [0002] At present, according to the "Functional Specifications for Power User Electricity Information Collection System" promulgated by the State Grid Corporation of China, the payment methods of residents' smart meters can be divided into two types: remote fee control and local fee control. Remote cost control means that the power marketing department completes the cost control process through the centralized copying system network; local cost control means that the smart meter itself completes the cost control measurement process, and the user completes the recharge through the power purchase card corresponding to the smart meter. Due to the high requirements and complicated construction of the network construction of the centralized reading sys...

AI Technical Summary

Problems solved by technology

According to the results of market research, at present, most areas choose to place energy meters in a centralized manner, and in many high-rise buildings, energy meters are chosen to be placed in strong motor wells, which makes it very difficult for users to query and recharge.

[0003] Therefore, there are various products on the market for this phenomenon, such as electricity inquiry system, centralized recharge system, etc., plus the centralized copying system of the State Grid Corporation, and at least three devices are connected to one meter, but the RS485 There can only be at most one set of data transmissions in the network, once there is a communication conflict, it is difficult to complete any work

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