The wide deployment of wireless networks and mobile technologies, along with the
significant increase in the number of mobile device users, have created a very strong
demand on various wireless-based, mobile-based software application systems and
enabling technologies. This not only provides many new business opportunities and
challenges to wireless and networking service providers, mobile technology ven-
dors, and software industry and solution integrators, butalso changes and enhances
people’s lives in many areas, including communications, information sharing and
exchange, commerce, home environment, education, and entertainment. Business
organizations and government agencies face new pressure fortechnology updatesto
Upgrade their networking infrastructures with wireless connectivity to enhance
enterprise-oriented systems and solutions.
標簽：
Wireless-Based
Software
Systems
上傳時間：
2020-06-01
上傳用戶：shancjb
針對嵌入式產品程序更新問題,提出了一種基于IAP技術的STM32單片機在線固件升級方案,設計了STM32單片機最小系統硬件電路和USB轉串口通信電路,并給出了Bootloader程序、APP程序、PC上機程序的實現流程.實驗結果表明,該方案具有簡單實用、穩定性高、維護成本低和設備使用效率高的特點,適用于嵌入式產品升級.For the problem of updating embedded products program,an online firmware Upgrade scheme of STM32 single chip microcomputer based on IAP technology is proposed.This scheme not only elaborates the principle of IAP technology in detail but also provides the design of the minimum system hardware circuit of STM32 MCU,the design of USB for serial communication circuit,and the implementation flow of Bootloader program,APP program and PC program.The experiment results show that the scheme is simple,practical and highly stable.In addition,it can be used to actual embedded product upgrading,significantly reducing maintenance costs and improving the efficiency of equipment.
標簽：
iap
stm32
單片機
上傳時間：
2022-03-25
上傳用戶：
對某四輪獨立驅動電動汽車輪轂電機進行研究,設計一種永磁無刷直流電機控制器.以STM32F103RBT6芯片為基礎,對電機驅動電路、采樣電路和保護電路分別進行硬件設計與分析;同時,采用模塊化軟件設計方案,對該控制器的軟件系統進行升級.實驗驗證表明:所設計的電機控制器能使電機響應迅速、轉速穩定、無超調,且電動車動力輸出性能良好.A permanent magnet brushless direct current motor controller was designed by studying the hub motor of a four-wheel independent drive electric vehicle.Based on STM32 F103RBT6 chip,the hardware design and analysis of motor drive circuit,sampling circuit and protection circuit were carried out respectively.At the same time,modular software design scheme was adopted to Upgrade the software system of the controller.Experimental results show that the designed motor controller can ensure the motor fast response,stable speed,no overshoot,and good power output performances.
標簽：
電動汽車
永磁無刷直流電機
上傳時間：
2022-03-26
上傳用戶：qingfengchizhu
