A DC regulated power supply with numerical control based on single chip microcomputer (SCM) is designed. SCM is the main controller and output voltage o{ DC power supply can be set by keyboard. The analog voltage ca...A DC regulated power supply with numerical control based on single chip microcomputer (SCM) is designed. SCM is the main controller and output voltage o{ DC power supply can be set by keyboard. The analog voltage can be obtained through D/A converter (DAC0832) so that different voltages can be provided by operational amplifier. The output voltage varies from 0 V to 12 V with the incremental value of 0. 1 V. The actual output voltage is shown in the nixietube. This DC regulated power supply is characterized by simple structure and easy operation.展开更多
This paper describes the innovation schemes of the interface of a CNC machine which cannot communicate with a computer by a Direct Numerical Control(DNC)interface and the functions of a DNC interface system.One archit...This paper describes the innovation schemes of the interface of a CNC machine which cannot communicate with a computer by a Direct Numerical Control(DNC)interface and the functions of a DNC interface system.One architecture of hardware and software of a practi- cal single-chip computer based on DNC interface system developed by the authors is given. Without any change of the original hardware and software,this DNC interface system has been used to innovate the CNC machine's interface to implement the direct communication between a computer and a CNC machine and to achieve no tape transmission of a part program and ma- chine parameters.It has been demonstrated that this DNC interface system has certain practical values in improving the reliability,efficiency and production management of CNC/NC machine.展开更多
针对单片机原理与接口技术课程在传统实践教学过程中,学生受规定时间、固定地点、指定实验设备的限制,实践与创新热情不能充分发挥的问题,该文以学生发展为中心,以提高学生实践能力为核心,构建ETPP渐进式从理论到实践、从仿真到实操的...针对单片机原理与接口技术课程在传统实践教学过程中,学生受规定时间、固定地点、指定实验设备的限制,实践与创新热情不能充分发挥的问题,该文以学生发展为中心,以提高学生实践能力为核心,构建ETPP渐进式从理论到实践、从仿真到实操的新型实践教学模式,打造完整的实践教学生态和全过程综合考核评价体系。学生使用51系列、STC15系列、Arduino UNO R3和STM32四种单片机便携式实验装置和多种传感器及外设模块,随时随地学习并实践,激发主动学习和探索实践的热情。实践教学表明,ETPP模式能够更好地培养实践能力强、创新能力强、符合社会需求的复合型创新型新工科人才,具有良好的教学效果。展开更多
为防止卡车在长时间刹车后,刹车鼓温度过热或高负载情况下差速器油温过高而发生事故,文章设计一种基于STM32F429和STM32F103单片机协同工作的卡车刹车鼓温度、差速器油温监控与预测系统。该系统以STM32F429单片机为主处理器,利用控制器...为防止卡车在长时间刹车后,刹车鼓温度过热或高负载情况下差速器油温过高而发生事故,文章设计一种基于STM32F429和STM32F103单片机协同工作的卡车刹车鼓温度、差速器油温监控与预测系统。该系统以STM32F429单片机为主处理器,利用控制器局域网(controller area network,CAN)总线和以STM32F103为核心的从处理器进行及时数据传输和存储,并融入STemWin系统设计人机交互界面,基于自回归求积移动平均理论建立温度预测模型。仿真结果表明:该系统稳定可靠、预测精准,能有效减少因刹车鼓温度或差速器油温过高而引起的事故。展开更多
文摘A DC regulated power supply with numerical control based on single chip microcomputer (SCM) is designed. SCM is the main controller and output voltage o{ DC power supply can be set by keyboard. The analog voltage can be obtained through D/A converter (DAC0832) so that different voltages can be provided by operational amplifier. The output voltage varies from 0 V to 12 V with the incremental value of 0. 1 V. The actual output voltage is shown in the nixietube. This DC regulated power supply is characterized by simple structure and easy operation.
文摘This paper describes the innovation schemes of the interface of a CNC machine which cannot communicate with a computer by a Direct Numerical Control(DNC)interface and the functions of a DNC interface system.One architecture of hardware and software of a practi- cal single-chip computer based on DNC interface system developed by the authors is given. Without any change of the original hardware and software,this DNC interface system has been used to innovate the CNC machine's interface to implement the direct communication between a computer and a CNC machine and to achieve no tape transmission of a part program and ma- chine parameters.It has been demonstrated that this DNC interface system has certain practical values in improving the reliability,efficiency and production management of CNC/NC machine.
文摘针对单片机原理与接口技术课程在传统实践教学过程中,学生受规定时间、固定地点、指定实验设备的限制,实践与创新热情不能充分发挥的问题,该文以学生发展为中心,以提高学生实践能力为核心,构建ETPP渐进式从理论到实践、从仿真到实操的新型实践教学模式,打造完整的实践教学生态和全过程综合考核评价体系。学生使用51系列、STC15系列、Arduino UNO R3和STM32四种单片机便携式实验装置和多种传感器及外设模块,随时随地学习并实践,激发主动学习和探索实践的热情。实践教学表明,ETPP模式能够更好地培养实践能力强、创新能力强、符合社会需求的复合型创新型新工科人才,具有良好的教学效果。
文摘为防止卡车在长时间刹车后,刹车鼓温度过热或高负载情况下差速器油温过高而发生事故,文章设计一种基于STM32F429和STM32F103单片机协同工作的卡车刹车鼓温度、差速器油温监控与预测系统。该系统以STM32F429单片机为主处理器,利用控制器局域网(controller area network,CAN)总线和以STM32F103为核心的从处理器进行及时数据传输和存储,并融入STemWin系统设计人机交互界面,基于自回归求积移动平均理论建立温度预测模型。仿真结果表明:该系统稳定可靠、预测精准,能有效减少因刹车鼓温度或差速器油温过高而引起的事故。