introduction: The vehicle safety monitoring system based on SoPC uses Altera's latest SoPC (programmable system on chip) solution-Nios processor soft core as the core, and cooperates with GPS and GSM systems to monitor the parking and running status of the car. The automobile safety monitoring system based on SoPC can be widely used in the theft prevention, daily maintenance and traffic accident handling of automobiles, and provides an effective test method for vehicle failures. 1 System hardware composition The design uses Altera's SoPC development tools. The development of the system includes hardware and software. Use SoPC Builder to generate Nios embedded processors. Nios embedded processor development tools allow users to configure one or more Nios CPUs, add peripheral devices from the standard library, comprehensively process custom systems, and compile the system with Quartus II design software. The steps of software development are: use the software files generated by SoPC Builder, write assembly language or C / C ++ source program with a text editor, and use GNUPro software development tools for program design, continuous compilation and debugging. GNUPro connects the source program (including assembly / compilation and connection) into an executable program and debugs and runs the executable program through the download cable. Quartus II design software provides a comprehensive and effective design environment, integrating design, synthesis, layout and verification, and third-party EDA tool interfaces in a seamless environment. With SoPCbuilder integrated in Quartus II 3.0, you can create your own Nios CPU system. Nios is a 16 / 32-bit embedded processor soft core developed by Altera Corporation. Funded by the school's scientific research fund project "Automotive Safety Monitoring System Based on SOPC". Altera has launched a new generation of multiple series FPGAs. This design uses low-cost Cyclone series devices EP1C12, which has 12 060 logic cells, 52 M4K RAM blocks, 239 616 RAM bits and 2 phase-locked loops, the largest user I / O pin 249. The block diagram of the system hardware consists of Nios system and external equipment, as shown in Figure 1. Nios system includes CPU (Nios), memory (memory), timer (TImer), bus and parallel / serial interfaces (key_pio, led_pio, lcd_pio, ccs_pio, uart_0 and uart_1), etc. , LED and LCD display, car central control system and GPS and GSM system and other external equipment connection. Nios system design and design results are shown in Figure 2 and Figure 3, respectively. The connection of the Nios system to external devices such as keyboards, LED and LCD displays, car central control systems and GPS systems is relatively simple, and the connection to the GSM system is more complicated, as shown in Figure 4. The working process of the entire system is: the information from the car's central control system and GPS system can be displayed on the LED and LCD display, or it can be sent wirelessly through the GSM system. The user can control the system through the keyboard, or remotely control the car's central control system through the GSM system. Wooden USB Flash Drive and adorable, people put it down Wooden And Bamboo Usb Flash Drive Wooden USB Flash Drive,Bamboo USB Flash Drive,Wooden USB Stick,Bamboo USB Stick Custom Usb Gift company limited , https://www.customusbgift.com
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