Digital EPS Emergency System Of Several Technologies

People are increasingly demanding high power levels in the rapid development of science and technology today, especially in hospitals and some of the power supply requirements are more stringent places. Insufficient power supply or a sudden interruption of electricity supply, will result in serious consequences. even a threat to people's safety.Emergency Power Supply EPS figures in the case of sudden interruption of electricity to the load under emergency power supply equipment,.In certain situations it can ensure the people's work for the moment the data is not lost power, reduce economic losses, improve fire safety index, to ensure that people's lives and property.This article is based on PIC MCU digital Emergency Power Supply EPS. PIC microcontroller integrated CCP (Compare/Capture/PWM), AD, USART serial communication modules, simplifying the circuit structure EPS emergency system.It reduce costs, achieved low-power digital EPS system the ideal choice.This article describes in detail the system inverter, battery charging and system monitoring software and hardware design techniques.Inverter for the system, experience of technology is the use of analog circuits typically generate SPWM waves in the past, which is used in the design of software generated by the advanced digital control technology SPWM waveform, thus simplifying the system circuit, reduce costs, its main Software generation advantage of digital control easier to implement the system, more stable system performance. Battery charging technology relative to the previous technology, the integration of the inverter charger features, reducing the system size, easy to implement intelligent control system. Select-stage battery charging solution, charge balance of the battery to extend battery life. System monitoring technology transfer process in achieving the parameters of Modbus communication protocol to follow, not only can guarantee the accuracy of data, but also enables LAN EPS emergency equipment with multiple monitoring devices for the same real-time monitoring. Implement network management systems.The work as follows in this paper: First of all, EPS Emergency System with the background and significance, analysis of the advantages of using the EPS system and application status of EPS according to the figures, EPS emergency system described in switching, inverter technology, systems management and development of applications such as battery Trend.Secondly, according to market situation and some design requirements, with EPS emergency system working principle of the system design, drawing overall system block diagram.Third, the combination of EPS system module to achieve the function of the system, inverter, battery management technology and system monitoring technology to do a detailed analysis and research, and three of the control circuit and a number of auxiliary circuit to do a systematic study And control theory based on departments and functions to be achieved given the specific content of software.Finally, I made a prototype of the system and study the various partse. Sampling and analysis conducted on the prototype, summarized the inadequacies of the research, made a number of corresponding measures, combined with the inadequacies of the system.