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ALARM

  • 关于我的数字钟的设计,设计一个24小时的数字闹钟

    关于我的数字钟的设计,设计一个24小时的数字闹钟,该数字闹钟的面板如图9.1所示,它包括以下几个组成部分:(1)显示屏,由7个七段数码管组成,其中6个用于显示当前时间(时:分:秒)或设置的闹钟时间,而另一个则用于显示系统内部产生的周期性循环变化的待选预置数字; (2)YES(确认)键:用于输入新的时间或新的闹钟时间时,对每位待选预置数字输入的确认;(3)TIME(时间)键:用于确定新的时间设置;(4)ALARM(闹钟)键:用于确定新的闹钟时间设置,或显示已设置的闹钟时间;(5)扬声器,在当前时钟时间与闹钟时间相同时,发出蜂鸣声。

    标签: 数字 数字闹钟

    上传时间: 2013-12-10

    上传用户:wsf950131

  • Tiny Planet is small device connected to a GSM cell phone. When the mobile receives a predefined SMS

    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?.

    标签: predefined connected receives Planet

    上传时间: 2017-05-17

    上传用户:fanboynet

  • "Hard to find" full description of ContactID protocol from Ademco used by many home security devices

    "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.

    标签: description ContactID protocol security

    上传时间: 2017-05-30

    上传用户:lifangyuan12

  • Compute Classical detection threshold for radar detection under additive Gaussian white noise criter

    Compute Classical detection threshold for radar detection under additive Gaussian white noise criterion and specified false ALARM probability.

    标签: detection Classical threshold additive

    上传时间: 2013-12-09

    上传用户:hwl453472107

  • Compute Classical CFAR binary detection threshold for radar detection under additive Gaussian white

    Compute Classical CFAR binary detection threshold for radar detection under additive Gaussian white noise criterion and specified false ALARM probability.

    标签: detection Classical threshold additive

    上传时间: 2013-12-22

    上传用户:希酱大魔王

  • yaskawa

    inverter list and ALARM list

    标签: yaskawa

    上传时间: 2016-04-21

    上传用户:zhezhe

  • varispeed

    manual list and ALARM list

    标签: varispeed

    上传时间: 2016-04-22

    上传用户:zhezhe

  • 基于TMS320F2812 光伏并网发电模拟装置PROTEL设计原理图+PCB+软件源码+WORD论

    基于TMS320F2812 光伏并网发电模拟装置PROTEL设计原理图+PCB+软件源码+WORD论文文档,硬件采用2层板设计,PROTEL99SE 设计的工程文件,包括完整的原理图和PCB文件,可以做为你的学习设计参考。 摘要:本文实现了一个基于TMS320F2812 DSP芯片的光伏并网发电模拟装置,采用直流稳压源和滑动变阻器来模拟光伏电池。通过TMS320F2812 DSP芯片ADC模块实时采样模拟电网电压的正弦参考信号、光伏电池输出电压、负载电压电流反馈信号等。经过数据处理后,用PWM模块产生实时的SPWM 波,控制MOSFET逆变全桥输出正弦波。本文用PI控制算法实现了输出信号对给定模拟电网电压的正弦参考信号的频率和相位跟踪,用恒定电压法实现了光伏电池最大功率点跟踪(MPPT),从而达到模拟并网的效果。另外本装置还实现了光伏电池输出欠压、负载过流保护功能以及光伏电池输出欠压、过流保护自恢复功能、声光报警功能、孤岛效应的检测、保护与自恢复功能。系统测试结果表明本设计完全满定设计要求。关键词:光伏并网,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 目录引言 11. 方案论证 11.1. 总体介绍 11.2. 光伏电池模拟装置 11.3. DC-AC逆变桥 11.4. MOSFET驱动电路方案 21.5. 逆变电路的变频控制方案 22. 理论分析与计算 22.1. SPWM产生 22.1.1. 规则采样法 22.1.2. SPWM 脉冲的计算公式 32.1.3. SPWM 脉冲计算公式中的参数计算 32.1.4. TMS320F2812 DSP控制器的事件管理单元 42.1.5. 软件设计方法 62.2. MPPT的控制方法与参数计算 72.3. 同频、同相的控制方法和参数计算 8

    标签: tms320f2812 光伏 并网发电 模拟 protel pcb

    上传时间: 2021-11-02

    上传用户:

  • 电池管理和均衡MCU 智能锂电池管理芯片 SH39F003A 手册

    产品特性介绍AFE 特性■ 集成硬件过充电保护功能     -  独立PF管脚输出低电平■ 集成硬件放电短路保护功能■ 集成平衡开关■ 集成充电器检测功能■ 集成负载检测功能■ 集成充放电状态检测功能■ 集成小电流唤醒功能■ 集成WatchDog/Reset功能■ 集成ALARM功能■ 集成负端NMOS驱动(放电PWM调控)■ 支持电芯乱序上电■ 2通道温度采集■ 12-bit VADC电压采集■ 13-bit  Ʃ-∆ CADC电流采集■ 集成LDO模块:3.3V/25mA@MAX■ 集成TWI通讯(CRC-8,10KHz~400KHz)■ 低功耗模式     - 正常模式≤70uA@25℃     - PowerDown模式≤1uA@25℃■ 工作电压     - 8V~50V(VBAT端口)MCU 特性■ 基于8051指令流水线结构的8位单片机     - CPU机器周期:1个振荡周期■ Flash ROM:64K字节■ RAM:内部256字节,外部2816字节■ 类EEPROM:最大4096字节(代码选项可选)■ 内部RC振荡器:24MHz(±1%)/128K(±10%)■ I/O内建上拉电阻(30kΩ)■ 1个16位定时器/计数器T3■ 3个16位PCA0、PCA1、PCA2各含2个比较/捕捉单元■ 3路12位PWM定时器■ SPI接口(主从模式)■ TWI接口(主从模式)■ 内建数字逻辑可配置模块(LCM)■ 3路增强型UART(3V/5V通讯)(自带波特率的uart通讯)■ 11通道12位模数转换器(ADC)■ 内建CRC校验模块,校验空间大小可选■ 看门狗定时器(WDT)■ 预热计数器■ 中断源     - 定时器3,PCA0-2,外部中断1-2,外部中断4:6输入     - ADC,EUART,SPI,PWM,SCM,CRC,TWI,LPD■ 低功耗工作模式:空闲模式/掉电模式■ 工作电压:VDD = 2.7V - 5.5V■ 封装:     - LQFP 64L

    标签: 锂电池管理芯片 mcu

    上传时间: 2022-03-24

    上传用户:qingfengchizhu

  • 基于AT89C52的农业温湿度智能控制系统设计

    设计了农业温湿度智能控制系统,该系统采用DHT11温湿度传感器作为温湿度采集模块,单片机选用AT89C52代替并调用Virtual terminal模拟串口通信,LCD1604液晶显示器实时显示温湿度,实现了温湿度的测量、显示,可自动控制加热、降温、加湿、通风,实现温湿度控制以及超限报警处理,并利用Proteus与Keil进行实际电路的仿真。试验表明,该系统实现了可靠的温湿度监控。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.

    标签: at89c52 温湿度智能控制系统

    上传时间: 2022-03-26

    上传用户:aben