關(guān)于我的數(shù)字鐘的設(shè)計(jì),設(shè)計(jì)一個(gè)24小時(shí)的數(shù)字鬧鐘，該數(shù)字鬧鐘的面板如圖9.1所示,它包括以下幾個(gè)組成部分：(1)顯示屏，由7個(gè)七段數(shù)碼管組成，其中6個(gè)用于顯示當(dāng)前時(shí)間(時(shí)：分：秒)或設(shè)置的鬧鐘時(shí)間，而另一個(gè)則用于顯示系統(tǒng)內(nèi)部產(chǎn)生的周期性循環(huán)變化的待選預(yù)置數(shù)字； (2)YES（確認(rèn)）鍵：用于輸入新的時(shí)間或新的鬧鐘時(shí)間時(shí)，對(duì)每位待選預(yù)置數(shù)字輸入的確認(rèn)；(3)TIME(時(shí)間)鍵：用于確定新的時(shí)間設(shè)置；(4)ALARM(鬧鐘)鍵：用于確定新的鬧鐘時(shí)間設(shè)置，或顯示已設(shè)置的鬧鐘時(shí)間；(5)揚(yáng)聲器，在當(dāng)前時(shí)鐘時(shí)間與鬧鐘時(shí)間相同時(shí)，發(fā)出蜂鳴聲。
上傳時(shí)間： 2013-12-10
上傳用戶：wsf950131
Tiny Planet is small device connected to a GSM cell phone. When the mobile receives a predefined SMS (text message), like "Activate burglar ALARM" or "Start backup pump", the circuit automatically recognizes it as a command, and switches the output port accordingly. Besides switching the port on or off, the user can pulse it for a short period (e.g. 鈥淩eboot remote server鈥?.
標(biāo)簽： predefined connected receives Planet
上傳時(shí)間： 2017-05-17
上傳用戶：fanboynet
"Hard to find" full description of ContactID protocol from Ademco used by many home security devices to send messages to CMS (Central Monitoring Station) about security events. Has full technical description and can be used to easy make CMS communication module that sends info from your ALARM system to CMS station.
標(biāo)簽： description ContactID protocol security
上傳時(shí)間： 2017-05-30
上傳用戶：lifangyuan12
Compute Classical detection threshold for radar detection under additive Gaussian white noise criterion and specified false ALARM probability.
標(biāo)簽： detection Classical threshold additive
上傳時(shí)間： 2013-12-09
上傳用戶：hwl453472107
Compute Classical CFAR binary detection threshold for radar detection under additive Gaussian white noise criterion and specified false ALARM probability.
標(biāo)簽： detection Classical threshold additive
上傳時(shí)間： 2013-12-22
上傳用戶：希醬大魔王
inverter list and ALARM list
標(biāo)簽： yaskawa
上傳時(shí)間： 2016-04-21
上傳用戶：zhezhe
manual list and ALARM list
標(biāo)簽： varispeed
上傳時(shí)間： 2016-04-22
上傳用戶：zhezhe
基于TMS320F2812 光伏并網(wǎng)發(fā)電模擬裝置PROTEL設(shè)計(jì)原理圖+PCB+軟件源碼+WORD論文文檔,硬件采用2層板設(shè)計(jì)，PROTEL99SE 設(shè)計(jì)的工程文件，包括完整的原理圖和PCB文件，可以做為你的學(xué)習(xí)設(shè)計(jì)參考。 摘要：本文實(shí)現(xiàn)了一個(gè)基于TMS320F2812 DSP芯片的光伏并網(wǎng)發(fā)電模擬裝置，采用直流穩(wěn)壓源和滑動(dòng)變阻器來模擬光伏電池。通過TMS320F2812 DSP芯片ADC模塊實(shí)時(shí)采樣模擬電網(wǎng)電壓的正弦參考信號(hào)、光伏電池輸出電壓、負(fù)載電壓電流反饋信號(hào)等。經(jīng)過數(shù)據(jù)處理后，用PWM模塊產(chǎn)生實(shí)時(shí)的SPWM 波，控制MOSFET逆變?nèi)珮蜉敵稣也ā１疚挠肞I控制算法實(shí)現(xiàn)了輸出信號(hào)對(duì)給定模擬電網(wǎng)電壓的正弦參考信號(hào)的頻率和相位跟蹤，用恒定電壓法實(shí)現(xiàn)了光伏電池最大功率點(diǎn)跟蹤（MPPT），從而達(dá)到模擬并網(wǎng)的效果。另外本裝置還實(shí)現(xiàn)了光伏電池輸出欠壓、負(fù)載過流保護(hù)功能以及光伏電池輸出欠壓、過流保護(hù)自恢復(fù)功能、聲光報(bào)警功能、孤島效應(yīng)的檢測(cè)、保護(hù)與自恢復(fù)功能。系統(tǒng)測(cè)試結(jié)果表明本設(shè)計(jì)完全滿定設(shè)計(jì)要求。關(guān)鍵詞：光伏并網(wǎng)，MPPT，DSP Photovoltaic Grid-connected generation simulator Zhangyuxin，Tantiancheng，Xiewuyang(College of Electrical Engineering, Chongqing University)Abstract: This paper presents a photovoltaic grid-connected generation simulator which is based on TMS320F2812 DSP, with a DC voltage source and a variable resistor to simulate the characteristic of photovoltaic cells. We use the internal AD converter to real-time sampling the referenced grid voltage signal, outputting voltage of photovoltaic, feedback outputting voltage and current signal. The PWM module generates SVPWM according to the calculation of the real-time sampling data, to control the full MOSFET inverter bridge output sine wave. We realized that the output voltage of the simulator can track the frequency and phase of the referenced grid voltage with PI regulation, and the maximum photovoltaic power tracking with constant voltage regulation, thereby achieved the purpose of grid-connected simulation. Additionally, this device has the over-voltage and over-current protection, audible and visual ALARM, islanding detecting and protection, and it can recover automatically. The testing shows that our design is feasible.Keywords: Photovoltaic Grid-connected，MPPT，DSP 目錄引言 11. 方案論證 11.1. 總體介紹 11.2. 光伏電池模擬裝置 11.3. DC-AC逆變橋 11.4. MOSFET驅(qū)動(dòng)電路方案 21.5. 逆變電路的變頻控制方案 22. 理論分析與計(jì)算 22.1. SPWM產(chǎn)生 22.1.1. 規(guī)則采樣法 22.1.2. SPWM 脈沖的計(jì)算公式 32.1.3. SPWM 脈沖計(jì)算公式中的參數(shù)計(jì)算 32.1.4. TMS320F2812 DSP控制器的事件管理單元 42.1.5. 軟件設(shè)計(jì)方法 62.2. MPPT的控制方法與參數(shù)計(jì)算 72.3. 同頻、同相的控制方法和參數(shù)計(jì)算 8
標(biāo)簽： tms320f2812 光伏 并網(wǎng)發(fā)電 模擬 protel pcb
上傳時(shí)間： 2021-11-02
上傳用戶：
產(chǎn)品特性介紹AFE 特性■ 集成硬件過充電保護(hù)功能 - 獨(dú)立PF管腳輸出低電平■ 集成硬件放電短路保護(hù)功能■ 集成平衡開關(guān)■ 集成充電器檢測(cè)功能■ 集成負(fù)載檢測(cè)功能■ 集成充放電狀態(tài)檢測(cè)功能■ 集成小電流喚醒功能■ 集成WatchDog/Reset功能■ 集成ALARM功能■ 集成負(fù)端NMOS驅(qū)動(dòng)(放電PWM調(diào)控)■ 支持電芯亂序上電■ 2通道溫度采集■ 12-bit VADC電壓采集■ 13-bit ?-? CADC電流采集■ 集成LDO模塊：3.3V/25mA@MAX■ 集成TWI通訊(CRC-8，10KHz~400KHz)■ 低功耗模式 - 正常模式≤70uA@25℃ - PowerDown模式≤1uA@25℃■ 工作電壓 - 8V~50V(VBAT端口)MCU 特性■ 基于8051指令流水線結(jié)構(gòu)的8位單片機(jī) - CPU機(jī)器周期：1個(gè)振蕩周期■ Flash ROM：64K字節(jié)■ RAM：內(nèi)部256字節(jié)，外部2816字節(jié)■ 類EEPROM：最大4096字節(jié)（代碼選項(xiàng)可選）■ 內(nèi)部RC振蕩器：24MHz（±1%）/128K（±10%）■ I/O內(nèi)建上拉電阻（30kΩ）■ 1個(gè)16位定時(shí)器/計(jì)數(shù)器T3■ 3個(gè)16位PCA0、PCA1、PCA2各含2個(gè)比較/捕捉單元■ 3路12位PWM定時(shí)器■ SPI接口（主從模式）■ TWI接口（主從模式）■ 內(nèi)建數(shù)字邏輯可配置模塊（LCM）■ 3路增強(qiáng)型UART（3V/5V通訊）（自帶波特率的uart通訊）■ 11通道12位模數(shù)轉(zhuǎn)換器（ADC）■ 內(nèi)建CRC校驗(yàn)?zāi)K，校驗(yàn)空間大小可選■ 看門狗定時(shí)器（WDT）■ 預(yù)熱計(jì)數(shù)器■ 中斷源 - 定時(shí)器3，PCA0-2，外部中斷1-2，外部中斷4：6輸入 - ADC，EUART，SPI，PWM，SCM，CRC，TWI，LPD■ 低功耗工作模式：空閑模式/掉電模式■ 工作電壓：VDD = 2.7V - 5.5V■ 封裝： - LQFP 64L
上傳時(shí)間： 2022-03-24
上傳用戶：qingfengchizhu
設(shè)計(jì)了農(nóng)業(yè)溫濕度智能控制系統(tǒng),該系統(tǒng)采用DHT11溫濕度傳感器作為溫濕度采集模塊,單片機(jī)選用AT89C52代替并調(diào)用Virtual terminal模擬串口通信,LCD1604液晶顯示器實(shí)時(shí)顯示溫濕度,實(shí)現(xiàn)了溫濕度的測(cè)量、顯示,可自動(dòng)控制加熱、降溫、加濕、通風(fēng),實(shí)現(xiàn)溫濕度控制以及超限報(bào)警處理,并利用Proteus與Keil進(jìn)行實(shí)際電路的仿真。試驗(yàn)表明,該系統(tǒng)實(shí)現(xiàn)了可靠的溫濕度監(jiān)控。We described the design of an intelligent control system of agriculture temperature and humidity.The system uses DHT11 temperature and humidity sensor as the temperature and humidity acquisition module.The SCM adopts AT89C52 to replace and call the virtual terminal for simulating serial communication.LCD1604 displays temperature and humidity in real time,which implements the measurement and display of temperature and humidity.The system is able to automatically control heating,cooling,humidification and ventilation,to achieve temperature and humidity control and over-limit ALARM processing.The system also uses Proteus and Keil for actual circuit simulation.The experiment shows that the system is capable of reliable temperature and humidity monitoring.
標(biāo)簽： at89c52 溫濕度智能控制系統(tǒng)
上傳時(shí)間： 2022-03-26
上傳用戶：aben
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