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(biāo)簽：
Wireless-Based
Software
Systems
上傳時間：
2020-06-01
上傳用戶：shancjb
針對嵌入式產(chǎn)品程序更新問題,提出了一種基于IAP技術(shù)的STM32單片機(jī)在線固件升級方案,設(shè)計(jì)了STM32單片機(jī)最小系統(tǒng)硬件電路和USB轉(zhuǎn)串口通信電路,并給出了Bootloader程序、APP程序、PC上機(jī)程序的實(shí)現(xiàn)流程.實(shí)驗(yàn)結(jié)果表明,該方案具有簡單實(shí)用、穩(wěn)定性高、維護(hù)成本低和設(shè)備使用效率高的特點(diǎn),適用于嵌入式產(chǎn)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(biāo)簽：
iap
stm32
單片機(jī)
上傳時間：
2022-03-25
上傳用戶：
對某四輪獨(dú)立驅(qū)動電動汽車輪轂電機(jī)進(jìn)行研究,設(shè)計(jì)一種永磁無刷直流電機(jī)控制器.以STM32F103RBT6芯片為基礎(chǔ),對電機(jī)驅(qū)動電路、采樣電路和保護(hù)電路分別進(jìn)行硬件設(shè)計(jì)與分析;同時,采用模塊化軟件設(shè)計(jì)方案,對該控制器的軟件系統(tǒng)進(jìn)行升級.實(shí)驗(yàn)驗(yàn)證表明:所設(shè)計(jì)的電機(jī)控制器能使電機(jī)響應(yīng)迅速、轉(zhuǎn)速穩(wěn)定、無超調(diào),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(biāo)簽：
電動汽車
永磁無刷直流電機(jī)
上傳時間：
2022-03-26
上傳用戶：qingfengchizhu
