This paper mainly introduces a charging pile application scheme based on serial screen, M0 microcontroller, micro-module module and card reader module. This solution simulates most of the functions of a real charging pile. By using this solution, the equipment manufacturer can complete the design of the entire charging pile in a short period of time, quickly occupying the market and succeeding.
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Nowadays, environmental protection issues are getting more and more attention. The low-carbon era has already arrived. The number of electric vehicles is increasing day by day. The charging problem needs to be solved urgently. Charging piles have emerged. The charging pile is mainly used for charging electric vehicles. It has the characteristics of simple operation, high charging, convenient use, etc. It can reduce the use cost of electric vehicles while providing convenient services for users of electric vehicles, and is conducive to promoting the electric vehicle industry. development of. Generally, charging piles are mainly placed on roadsides, parking lots, residential areas, small service outlets, etc. Figure 1 shows an electric vehicle user who is swiping cards.
1 Overview
(1) Comparison of programs
Most of the existing charging pile control schemes are based on the ARM architecture. The operating system runs on the processor and is connected through the Ethernet and the charging management server. Because the charging pile part needs to complete less functions, mainly including data acquisition, charging control, pricing settlement, data transmission, parameter setting, receipt printing, etc., so using a M0 microcontroller as the main controller is enough to achieve these functions, and at the same time Reduce system costs. The system also uses a serial display terminal, a non-contact swipe module and a micro-play module. The advantages of this application system are as follows:
â— Adopt intelligent display terminal, support touch function, true color display, easy to realize human-computer interaction;
â— Non-contact swipe, easy to operate, support CPU card, safer to use;
â— The system function modules are relatively independent, and the interface is simple, which facilitates subsequent maintenance.
â— The whole system has a wide operating temperature range and low system power consumption, which can adapt to the harsh working environment;
â— Under the premise of ensuring system performance and reliability, the solution is cheaper and more competitive in the market.
(2) Functional overview
The emergence of electric vehicles has broken the pattern that cars used to rely on fuel. With the increase of electric vehicles, the installation of charging piles has also increased. In the system of the charging pile scheme, the user can obtain a fast and efficient charging service through a simple and beautiful human-machine interface. For different charging users, the system provides different charging modes to choose from. After the charging starts, the related parameters will be displayed and updated in real time, making the charging process more intuitive and more user-friendly. At the end of the charging process, the system will prompt the user to print a receipt, and the system will print detailed consumption information for the user according to the user's choice.
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