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1、东华理工大学长江学院毕业设计 摘要摘 要随着电子技术产业结构调整，生产工艺的飞速发展，人们生活水平的不断提高，家用电器逐渐普及，市场对于智能控制系统的需求也越来越大。数字时钟的出现打破了人们对时钟的传统概念，因为数字时钟不仅可以通过数字直观地显示日历时间，用音响、音乐及汉语语音等声音报时；还可以定时发出各种声、光、电信号，以启动各种设备实现实时控制、时间顺序控制。如作息时间自动打铃、家电设备自动定时启闭、生产过程顺序控制等等，用途很广。所有这些都是以钟表数字化为基础的，因此，研究数字时钟及扩大其应用，有着非常现实的意义。作息时间自动打铃器选用了大规模时钟集成芯片 LM8361 作时钟电路，时钟
2、电路的主要任务是产生实时时钟信号，一方面送到数字显示器进行表示，另一个方面提供自动打铃电路的存储器地址信号。用存储器 RAM6264 作译码器，利用译码器的读取、存储、写入时钟信号来控制其时间电路的显示以及响铃电路的正常运作即发出“嘀-嘟”的打铃声设计作息时间自动打铃器。输出电路是位于输出信号与执行机构之间的电路，这里，执行机构为响铃电路，如果是采用继电器控制电铃，则输出电路应根据继电器的点参数进行设计，如果采用定时电路控制喇叭信号灯工作，则输出电路应该将存储器的输出电平变成喇叭的发声信号或者是指示灯的工作信号。电源采用一个直流稳压电源。直流稳压电源一般由电源变压器,整流滤波电路及稳压电路所组
3、成.但是日历时钟时常跑快跑慢的现象普遍存在，经过日积月累，就会产生较大的误差。为了解决这一问题，我们设计了能够自动校准和整点报时的可编程时钟控制器。它能很好的帮助我们完成对操控方面的时序和时间的控制，能够让我们来掌握运筹时间而不是让时间来催促逼迫我们。关键词：数字时钟； 可编程控制器； 时钟控制器东华理工大学长江学院毕业设计 摘要AbstractWith the electronic technology industry restructuring, the rapid development of production technology, the continuous improvem
4、ent of peoples standard of living, household electrical appliances gradually universal, intelligent control system for the market demand is increasing. The emergence of digital clock on the clock to break the peoples traditional concept, because the digital clock not only through digital visual disp
5、lay calendar time, with sound, music and Chinese speech sounds, such as timekeeping; can also give a variety of sound, light, signals, To start to achieve real-time control of equipment, time sequence control. Such as auto-play and rest time bell, Home Appliances automatic timing hoist, the order of
6、 the production process control, etc., use a very wide. All of these are digital watches and clocks, as the basis and, therefore, on digital clocks and expand its applications, a very practical significance. And rest time a bell for automatic selection of the large-scale integrated chip LM8361 clock
7、 for clock circuit, the clock circuits main task is to produce real-time clock, on the one hand to a digital display that provides automatic Another aspect of a bell circuit memory address signal . RAM6264 memory used for decoding, using the decoder to read, store, write clock signal to control its
8、time the show circuit and signal circuit the normal operation of that issue, Di - the tone of a ring design and rest time Automatic-ling. Output circuits are located in the implementation of the output signal between the circuit here, the executing agency for the signal circuit, if it is a relay con
9、trol bells, the output circuit of the relay points should be based on the design parameters, if a regular speaker circuit control Lights work, the output of the memory circuit should become speaker output level of audible signals or signal lights work. Power to adopt a DC power supply. DC power supp
10、ly from the general power transformer, rectifier filter circuits and components by the regulator circuit However, the calendar clock ran sprints often slow the widespread phenomenon, after accumulated, it will have a greater error. In order to solve this problem, we can design the automatic calibrat
11、ion and broadcast the whole point of programmable clock controller. Its good to help us complete control of the timing and duration of control, so that we can master planning to allow time to time rather than forcing us to press.Key words: digital clock; PLC; clock controller东华理工大学长江学院毕业设计 摘要目 录绪 论.1 1 总体方案的论证.21.1 设计要求.21.2 设计中主要的三方面.21.3 时钟电路的构成方案.21.4 作息时间控制器.2 1.5 功放电路.22 总体方案的确定.33 各系统分析与整体设计.43.1 时钟电路设计.4 3.2 作息时间存储电路设计.93.3 输出电路设计.15 3.4 直流电源设计.
