以倉(cāng)庫(kù)智能改造為背景,主要介紹單片機(jī)和上位機(jī)之間通信網(wǎng)絡(luò)和通信協(xié)議的選擇,MODBUS協(xié)議通信指令和功能碼使用,重點(diǎn)闡述了基于RS-485總線的MODBUS通信協(xié)議在上位機(jī)和單片機(jī)之間的串行通信,實(shí)現(xiàn)上位機(jī)對(duì)單片機(jī)設(shè)備的遠(yuǎn)程控制和信息采集的功能。Based on the intelligent warehouse transformation as the background,mainly introduces between MCU and PC communication network and the choice of communication protocol,instruction and the function code using the MODBUS protocol communication,expounds the MODBUS communication protocol based on RS-485 bus serial communication between PC and single chip microcomputer,PC remote control of single chip computer equipment and the function of information collection.
標(biāo)簽： RS-485總線 modbus 單片機(jī)
上傳時(shí)間： 2022-03-26
上傳用戶：
近年來(lái)反季節(jié)種植已成火熱趨勢(shì),溫室大棚的普及十分迅速,而溫室大棚對(duì)自動(dòng)化、智能化的要求也越來(lái)越迫切,本系統(tǒng)將溫室大棚的溫濕度、二氧化碳濃度各個(gè)方面的檢測(cè),通風(fēng)、澆灌、溫度、噴灑農(nóng)藥等各個(gè)方面的控制進(jìn)行綜合系統(tǒng)研究,實(shí)現(xiàn)溫室大棚對(duì)自動(dòng)化、智能化的要求。這一系統(tǒng)是基于單片機(jī)控制的智能檢測(cè),控制系統(tǒng)包含單片機(jī)主控模塊、感應(yīng)檢測(cè)模塊、傳感模塊,顯示、控制模塊等[1]。從而提高溫室大棚的種植效率,減少勞動(dòng)力,提高利潤(rùn)等。In recent years,counter-season planting has become a hot trend featuring the rapid popularization of greenhouse and urgent requirement for the automation and intellectualization of greenhouse.This paper offers a comprehensive and systematic study of the monitoring of temperature,humidity and carbon dioxide concentration in the greenhouse and the control of ventilation,irrigation,temperature and pesticide spraying in order to achieve automation and intellectualization in greenhouse.This system is based on the intelligent detection controlled by single chip computer with the control system including the main control module,induction detection module,sensing module,display and control module of single chip computer,which is effective in improving planting efficiency of greenhouse,reducing labor force and increasing profits.
標(biāo)簽： 智能溫室大棚 控制系統(tǒng)
上傳時(shí)間： 2022-03-27
上傳用戶：
以AT89S52單片機(jī)為控制核心,采用電容降壓技術(shù),Buck電路拓?fù)?PWM驅(qū)動(dòng)模塊和功率器件散熱設(shè)計(jì),通過高速的數(shù)據(jù)采集、主功率輸入輸出模塊和控制模塊,設(shè)計(jì)一種新型智能車載充電器.在充電過程中,通過負(fù)脈沖瞬間放電實(shí)現(xiàn)對(duì)鉛酸蓄電池的再生修復(fù),提高電池的有效容量,延長(zhǎng)使用壽命.該充電器體積小、速度快、效率高、可靠性好.With AT89S52 single chip computer as the control core,a new type of intelligent car-carried charger was designed by using capacitance step-down technology,Buck circuit topology,PWM driving module and power device heat dissipation design,through high-speed data acquisition,main power input and output module and control module.In the charging process,the regeneration and repair of lead-acid batteries are realized by instantaneous discharge of negative pulse,which improves the effective capacity of batteries and prolongs their service life.The charger has the advantages of small size,fast speed,high efficiency and good reliability.
標(biāo)簽： 車載充電器
上傳時(shí)間： 2022-03-27
上傳用戶：
Algebra, Topology, Differential Calculus, and Optimization Theory For Computer Science and Machine Learning一本數(shù)學(xué)大全書，由Jean Gallier and Jocelyn Quaintance合著。
標(biāo)簽： 機(jī)器學(xué)習(xí) 數(shù)學(xué)
上傳時(shí)間： 2022-05-05
上傳用戶：默默
基于TMS320F28335的超聲波流量計(jì)硬件原理圖+軟件源碼本文以TMS320F28335 處理器為核心，設(shè)計(jì)一種用于管道流量測(cè)量的超聲波流量計(jì)。系統(tǒng)硬件由核心板，超聲波發(fā)射和接收電路，切換電路，超聲換能器，基于ADS805 的高速信號(hào)采集電路，人機(jī)交互以及電源等模塊構(gòu)成。采用時(shí)差法進(jìn)行管道流量測(cè)量，時(shí)差測(cè)量采用SCOT 加權(quán)的廣義互相關(guān)時(shí)延估計(jì)算法。本論文設(shè)計(jì)的超聲波流量計(jì)具有測(cè)量速度快、準(zhǔn)確性好、成本低等優(yōu)點(diǎn)。關(guān)鍵字：C2000，超聲波，流量，廣義互相關(guān)算法AbstractA kind of ultrasonic flowmeter using for the pipe flow measurement is designed based onTMS320F28335 in this paper. The system hardware consists of the following parts: the core board,ultrasonic signal transmitter and receiver circuits, switch circuit, ultrasonic transducer, signalacquisition circuit based on ADS805, human-computer interaction module and power supplymodule, etc. The system use the method of time difference for pipeline flow measurement and thetime difference is calculated by the time-delay algorithm of SCOT weighted generalizedcross-correlation. The ultrasonic flowmeter has the features of high testing speed, high precisionand low cost, etc.Keywords: C2000,Ultrasonic, Flow, Generalized Cross-Correlation Algorithm
標(biāo)簽： tms320f28335 超聲波流量計(jì)
上傳時(shí)間： 2022-05-06
上傳用戶：
以STM32F103C8T6為核心,設(shè)計(jì)了無(wú)刷直流電機(jī)控制器硬件電路。電路主要包括IR2310構(gòu)成的PWM驅(qū)動(dòng)電路、IRF3808構(gòu)成的逆變電路、增量式旋轉(zhuǎn)編碼構(gòu)成的速度反饋電路。控制器具有CAN和RS232通信接口,可與計(jì)算機(jī)或PLC構(gòu)成速度或位置伺服系統(tǒng)。利用由xPC目標(biāo)搭建的半實(shí)物仿真平臺(tái)對(duì)PI參數(shù)進(jìn)行整定。測(cè)試了控制器的速度伺服響應(yīng)性能,給定速度為2400rpm時(shí),控制器響應(yīng)時(shí)間為0.32s。實(shí)驗(yàn)結(jié)果表明,系統(tǒng)工作可靠,穩(wěn)定性好,響應(yīng)速度快,可以滿足上肢康復(fù)機(jī)器人的機(jī)械臂速度控制性能要求。The hardware circuit of Brushless DC motor controller is designed by taking STM32F103C8T6 as the core,which mainly includes PWM driving circuits made up of IR2310,inverter circuit formed by IRF3808,speed feedback circuit composed of incremental rotary encoder and so on.Speed servo control system or position servo control system can be composed of BLDM controller with computer or PLC through CAN communication interface or RS232 serial communication interface.By using the hardware in the loop simulation platform built by xPC target,the PI parameters are set up.The Speed servo response performance of the controller is tested.When the speed is 2 400 rpm,the response time of the controller is 0...
標(biāo)簽： stm32 無(wú)刷直流電機(jī)
上傳時(shí)間： 2022-05-07
上傳用戶：
為了實(shí)時(shí)檢測(cè)血氧量,能使缺氧特別敏感的腦組織或心臟類疾病患者得到及時(shí)治療,采用近紅外雙波長(zhǎng)透射式光電脈搏血氧測(cè)定法,以H橋電路對(duì)發(fā)射光源進(jìn)行控制及通用運(yùn)算放大器搭建濾波電路。運(yùn)用參數(shù)理論計(jì)算和計(jì)算機(jī)仿真結(jié)果相對(duì)比的方法,通過Mu ltisim軟件對(duì)所設(shè)計(jì)電路進(jìn)行仿真,仿真結(jié)果與理論參數(shù)計(jì)算相吻合,證明了電路參數(shù)設(shè)計(jì)的可行性,為血氧儀的實(shí)物制作提供參考。For real-time detection of oxygen saturation for timely treatment of the brain or heart,which are very sensitive to oxygen inadequacy,the near-infrared wavelengths double photoelectric pulse oximeter transmission method is adopted.The illuminant is controlled with the H bridge circuit and the filter circuit is built with general op-amps.Parameters by theoretical calculation is compared with the computer simulation results in Multisim and satisfactory results are obtained.It is shown that the design of the circuit parameters is feasible and can be a help in making the physical blood-oxygen monitor.
上傳時(shí)間： 2022-05-12
上傳用戶：
說(shuō)明： 基于51單片機(jī)的數(shù)字直流電壓表相關(guān)材料，內(nèi)容有原理圖，仿真文件，論文材料，程序源碼等。(The related materials of digital DC voltmeter based on 51 single chip computer include schematic simulation files, paper materials, program source code, etc.)
標(biāo)簽： 51單片機(jī) tlc2543 電壓表
上傳時(shí)間： 2022-05-16
上傳用戶：fliang
說(shuō)明： 51單片機(jī)控制智能溫控風(fēng)扇，多檔調(diào)節(jié)，pwd調(diào)速。包含源碼和電路圖(51 single chip computer control intelligent temperature control fan, multi-stage adjustment, PWD speed regulation. Contains source code and circuit diagrams)
上傳時(shí)間： 2022-05-17
上傳用戶：
Compact PCI（Compact Peripheral Component Interconnect）簡(jiǎn)稱CPCI，中文又稱緊湊型PCI，是國(guó)際工業(yè)計(jì)算機(jī)制造者聯(lián)合會(huì)（PCI Industrial Computer Manufacturer's Group，簡(jiǎn)稱PICMG）于1994提出來(lái)的一種總線接口標(biāo)準(zhǔn)。是以PCI電氣規(guī)范為標(biāo)準(zhǔn)的高性能工業(yè)用總線。為了將PCI SIG的PCI總線規(guī)范用在工業(yè)控制計(jì)算機(jī)系統(tǒng)，1995年11月PCI工業(yè)計(jì)算機(jī)制造者聯(lián)合會(huì)（PICMG）頒布了CPCI規(guī)范1.0版，以后相繼推出了PCI-PCI Bridge規(guī)范、Computer Telephony TDM規(guī)范和User-defined I/O pin assignment規(guī)范。
標(biāo)簽： cpci
上傳時(shí)間： 2022-05-20
上傳用戶：
蟲蟲下載站版權(quán)所有 京ICP備2021023401號(hào)-1
