Use of single chip microcomputer in hydraulic digital adaptive control system

Presents a one grade adaptive controller with one reference model which is built according to δ MRACS adaptive control theory and used to control an actual high order hydraulic system, and the whole hardware system used, which includes a AT89C51 single chip microcomputer, 74Ls373 flip latch, 6116 store, eight bit ADC0809, and so on, and the satisfactory results obtained in study on hydraulic control system.

Design of an Automated Sorting System for Apples Based on Single Chip Microcomputer

The grading judgment for apples is related to a variety of factors including,size,shape,color,texture,and scars.Traditional manual sorting methods are time consuming and labor intensive.In addition,the accuracy of the method is easily subjective,not repeatable,error-prone,and affected by the sorting environment.This paper presents a complete and automated grading system for apples.The system uses a single-chip microcomputer as the controller of the system,and a PC as the graphics processing unit.It also includes a conveyor,drive motor,frequency converter for motor control,photoelectric sensors,air compressor,and air jets for ejecting the graded apples.The classification algorithm is implemented by using a convolutional neural network(CNN).In order to eliminate contact damage of apples,the system specifically uses air jets as actuators to eject the graded apples into the corresponding bins.At the same time,in order to ensure that an apple triggers the correct ejecting actuator,this paper designs a jet controller with proper logic.

SF VECTOR CONTROL SYSTEM WITH TWO SINGLE CHIP MICROPROCESSORS

This paper introduces a SF vector control system of a slip frequency controlled induction mo-tor with simple structure,fair performance and convenient operation.It is realized by two singlechip microprocessors and fed from SPWM-GTR inverter.The whole system is combined by twosubsystems,both of them are 8031 single chip microprocessors.The communication between themis coordinated by the full duplex serial port within the chip and ask-and-answer communicationmanner.The error-corrected means adopted has improved the operation reliability of the system.A series of experimental results on a 3 kW induction motor are given at the end of this paper.

Gas concentration monitoring system for small and medium-sized coal mines based on gas-sensing detection and single-chip control

这份报纸针对气体在小、中型的煤矿引起的灾难的实际条件。为煤矿监视系统的新煤气的集中根据煤气察觉到的察觉和单个薄片的控制被开发。因为它为易燃、爆炸的气体有好敏感特征，监视系统把锡氧化物用作 N 类型半导体气体传感器的主要材料(例如甲烷，碳一氧化物) 。QM-N5-semiconductor 煤气的传感器被采用在不同煤气的集中下面检测抵抗的产量价值。故意地，系统拿数字薄片抵抗作为处理硬件结构分析并且判定输入的电路的核心珍视的 AT89C51，然后为超出煤气的集中的限制完成控制和警报。监视系统的煤气的集中有许多优点包括在结构，快反应时间，稳定的表演和低费用简单。因此，监视煤气的集中并且在小、中型的煤矿提供早警告能广泛地被用来。

DESIGNOFMULTI┐SLOTANDUNEQUAL┐TEMPERATUREPIDCONTROLLERBASEDONSINGLECHIPMICROCOMPUTER

以一个具体的生产过程为例，介绍以单片机为核心的多段不等温PID控制器的设计。文中讨论了PID算法数学实现的模型及实现该算法的软硬件设计方法。

Design and Research of Intelligent Alcohol Detector Based on Single Chip Microcomputer

In order to prevent drunk driving timely and protect personal safety,a kind of vehicle-loaded alcohol concentration detector based on single chip microcomputer control is designed.The detector usesAT89C51 microcontroller as the core,makes use of the gas sensor,A/D converter to detect the alcohol concentration of the breath of the driver,can set different thresholds according to the space of the car model,automatically cut off the ignition circuit for the exceeded threshold,and has the sound and light alarm function,which fundamentally solve the problem of drunk driving.The instrument is compact in size,stable in performance,convenient in installation and debugging,and of practical significance.

The Temperature Intelligence Control System Based on Single Chip-Microprocessor

The paper introduces a temperature control systembased on AT89C51 single-chip-microprocessor, and discussesthe principle , hardware structure, and software design of thissystem in detail.

Development of single-chip fuzzy controller based on FFSI in binary

Length and concise structure of fuzzy logic reasoning program and its real-time reasoning characteris-tic have their effect on the performance of a digital single-chip fuzzy controller. The control effect of a digitalfuzzy controller based on looking up fuzzy control responding table is only relative to the table and not relative tothe fuzzy control rules in the practical control process. Aiming at above problem and having combined fuzzy log-ic reasoning with digital operational characteristics of a single-chip microcomputer, functioning-fuzzy-subset in-ference (FFSI) in binary, in which triangle membership functions of error and error-in-change are all represen-ted in binary and singleton membership functions of control variable is binary too, has been introduced. The cir-cuit principle plans of a single-chip fuzzy controller have been introduced for development of its hardware, andthe primary program structure, fuzzy logic reasoning subroutine, serial communication subroutine with PC andreliability design of the fuzzy controller are all discussed in detail. The control of indoor temperature by a fuzzycontroller has been conducted using a testing-room thermodynamic system. Research results show that the FFSIin binary can exercise a concise fuzzy control in a single-chip fuzzy controller, and the fuzzy controller is there-fore reliable and possesses a high performance-price ratio.

基于ETPP模式的单片机原理与接口技术课程实践教学改革探索

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。

基于虚拟实验教学平台的单片机控制技术课程实践教学改革研究

通过分析单片机控制技术课程实验教学现状,重构课程教学内容和教学方法,构建虚拟仿真实验教学平台,开展项目式学习。以防盗报警器实验项目为例,具体介绍了教学案例设计并分析了教学效果。实践证明,项目式虚拟仿真实验教学模式有助于学生的创新应用能力、小组协作能力及问题解决能力等综合素质的提升。

OBE理念下智慧教室监控系统案例设计

将基于学习产出的教育模式(Outcome Based Education,OBE)引入单片机课程实践教学之中,设计了智慧教室监控系统的教学案例。系统可实现手动控灯和自动控灯、时钟显示、语音播报等功能。在实践中,以目标成果为导向,分功能模块,设计不同难度的学习目标,将虚拟仿真和实物搭建相结合,训练和培养学生基础模块知识、系统分析设计能力、专业素养和人文素养,循序渐进,并将融入思政元素和培养能力贯穿教学全过程,为其他专业课程实践教学提供参考。

基于模糊自适应PID的汽车硅油风扇离合器性能测试系统研究

以汽车硅油风扇离合器为研究对象,结合单片机和传感器技术,开发出性能测试系统.提出模糊自适应PID动态控制算法,设计控制器控制温度,利用速度传感器检测风扇转速,对测试系统进行整体设计,给出了硬件总体设计框图,设计模拟量输入输出电路,并设计对应的软件系统.实验结果表明:测试系统升降温速率最高不超过8.5℃/min,耦合区加温速率约为2.3℃/min,分离区降温速率约为6.6℃/min,系统性能稳定,符合标准.

基于STM32的锂电池电量状态监测系统设计

提出了一种基于STM32主控和INA226电流电压检测芯片的氢气燃料电池供电的24 V锂电池电量状态(SoC)监测系统。通过INA226芯片采集锂电池的内部数据,监视分流压降和总线电源电压,实现了对锂电池电量状态的精确监测。详细介绍了锂电池电量状态监测系统的总体设计方案,以及STM32主控和INA226监测模块的电路设计和程序设计。通过实验验证,该系统能够有效地监测锂电池的电量状态,为氢气燃料电池供电系统的稳定运行提供了可靠的保障。

基于STM32单片机的太阳能自动跟踪锂电池充电系统设计

随着经济全球化和世界经济的迅猛发展,人们对煤炭、石油等传统能源的需求越来越高,但该类资源不仅储藏有限,而且容易污染环境。与此同时,以太阳能为代表的新能源逐渐进入人们的视野。在此背景下,为进一步提高太阳能的利用率,文章提出一种基于STM32单片机的太阳能自动跟踪锂电池充电系统的设计方案,利用光照传感器采集四个方向的光照强度将其转换为电信号,通过AD转换将电信号转化为数字信号,再由STM32单片机进行数据处理分析,并根据四个方向的光照强度驱动电机旋转,使太阳能电池板与太阳光尽量保持垂直,最大限度提高太阳能的吸收效率。

一种基于单片机控制的水位报警装置设计

基于单片机控制的水位报警装置,安装于路桥涵洞、城市地下道等合适位置,在道路积水严重的情况下,可实现声光报警,提示行人或各类型车辆谨慎通行。基本设计思路是:首先通过水位传感器采集模拟信号经模数转换器转换后形成数字信号,输入到单片机中进行分析判断,然后根据水位高度的不同输出不同的控制信号,控制信号经过光电耦合器后,驱动对应的报警模块进行声光报警。

《单片机原理及接口技术》课程考核改革探究

针对《单片机原理及接口技术》课程实践性和实用性较强的特点,传统的应试考核模式无法全面、准确评价学生的综合能力和学习效果。文章在深入分析该课程考核改革必要性的基础上,构建了新型多元化的课程考核体系。该考核体系采用期末考试和过程性考核相结合、考核改革与教学改革并行的改革措施,以及学生和教师评价相结合、院校内和院校外评价相结合的评价手段。实践证明,该考核体系具有更强的针对性和较好的实用性。

试验液压缸活塞控制器优化开发

针对试验液压缸安装过程中对多点协调加载控制系统的依赖性,提出了一种液压缸活塞控制器研制方法,采用单片机作为处理器核心,实现了液压缸活塞伸缩量的精确控制,且系统响应速度可调。当试验加载点安装空间狭小时,控制器可以提高活塞运行的安全性,在工程中具有可靠的应用价值。

室内绿植智能浇水系统

针对盆栽进行智能、合理的维护,解决在栽培过程中无法及时浇水以及无法控制浇水量的问题,设计了一款自动浇水装置。采用单片机作为内部控制器,该装置装配有温湿度传感器和液位传感器等环境参数检测设备,能够智能地响应室内环境和土壤潜在需求。通过PID控制算法来控制进出水泵出水量,将期望出水量设置为SP并实时检测实际出水量PV,通过计算误差并根据PID控制器输出的控制变量U控制相应的继电装置,以实现自动浇水装置的智能化控制。

植保无人机实时变量喷洒控制系统设计与试验

针对目前植保无人机在手动作业时,需要人为控制农药流量大小和植保机飞行速度,无法实现农药流量和飞行速度的实时匹配,造成农药喷洒不均匀的问题,开发了一种实时变量农药喷洒的控制系统。系统以STM32F103ZET6单片机为核心,使用GPS北斗定位模块进行速度和位置信息采集,基于PWM技术控制离心喷头的转速和水泵的药液流量,通过流量计反馈实时流量,形成闭环系统,并使用PID算法对整个系统进行精准控制。工作时,基于USART HMI串口屏设计的上位机远程实时地控制离心喷头转速和农药流量,同时在上位机的液晶屏幕上显示飞行参数等信息。试验结果表明:植保无人机实时变量喷洒控制系统可行,系统开机初始化时间为3.5s;在地面站离主设备1m~1km之间,系统响应时间为10~45ms之间,且农药流量控制系统的实际流量和理论流量之间的平均误差为2.2%。

教育数字化背景下机电专业混合式教学模式研究——以“单片机原理与接口技术”课程为例

教育数字化战略方向的提出为高校的课程数字化转型带来了挑战和机遇,高校应乘时乘势,推动教育创新发展。为解决当前“单片机原理与接口技术”课程教学中存在的学习需求多样、实践内容不足、缺乏师生互动等问题,课题组结合学院处于粤港澳大湾区的优越地理环境,围绕“单片机原理与接口技术”课程理论与实践相结合的特点,以及嵌入式技术人才的培养需求,提出以线上线下混合式为路线的创新教学模式,教学改革包含了课程内容的改革、课程资源的建设和应用、教学模式的探索、实验实践设计等内容。混合式教学改革为“单片机原理与接口技术”课程建设了丰富齐全的线上数字教学资源,同时有力地支持高水平复合型人才的培养。实践证明,线上线下混合式教学有效地利用线上资源,突破时空的限制,充分调动学生学习热情,该教学模式得到了学院师生的充分肯定。