1、简易洗衣机控制器简易洗衣机控制器 摘要：摘要：本设计是基于数字电路定时器的洗衣机简易控制电路。通过预置洗衣机的洗涤时间来 自动的正反转和暂停，并且用不同的指示灯来表示洗衣机的正反暂停三状态。当到达定时时 间后，会自动报警，发出蜂鸣声。同时，用两位数码管来显示预置时间和洗涤剩余时间。 电路主要分为显示电路、秒脉冲发生电路、计时电路、报警状态电路和洗衣机正反转控 制电路。显示电路使用的是两个单位的共阴极八段数码管，使用两片 CD4511 作为数码管译码 芯片。秒脉冲发生电路采用了使用成熟广泛的 555 定时器芯片，产生秒信号，作为各芯片的 时钟信号。计时电路使用的是四片十进制可逆计数器 74LS1
2、92 芯片，分别设计为十进制和六 进制电路，用于完成时间的定时、计时功能。报警电路和状态显示电路使用的是简单的非门 和与非门 74LS04、74LS00 组成的逻辑组合电路，分别控制蜂鸣器和发光二极管，来实现报警 和状态显示。电机控制电路采用了 3-8 译码器 74LS138 和与非门电路的组合，实现电机正反 暂停状态。 实验通过电脑软件仿真和实物验证，具有良好的可行性，能够稍加修改后用于洗衣机控 制电路中，能满足一般的要求。 关键词关键词 ：洗衣机控制 ；数字电子控制；定时器 A Abstractsbstracts：The design is based on the simple digi
3、tal circuit timer of washing machine. The washing machine is to be positive negative and suspension by preset time, and expressed in different light to suspend three washing state. After the time run over, will automatically alarm, beeping. At the same time, with two digital tubes to display the pre
4、set time and washing time remaining. Circuit consists of display circuit, pulse generator and timing circuits, alarm circuit and washing machine positive negative state control circuit. Display circuit is two units of digital pipe, use of catholic erection CD4511 pieces as digital tube decoding chip
5、s. Second pulse generator adopted widely used mature 555 timing, as the signal, the clock signal chip. Timing circuits using four decimal reversible counter 74ls192 chip design, respectively for the decimal system and six for completion time of the circuit, timing, and timer function. Alarm circuit
6、and status display circuit is simple logic cross-coupled nand gates and 74ls04 74ls00, consisting of logic circuit, control and light-emitting diodes, buzzer to realize alarm and status display. The motor control circuit used 3-8 74ls138 decoder cross-coupled nand gates and combination of circuit, motor and suspended state. Computer software simulation and experiment through physical test, has the good feasibility, a washing machine, used for the control circuit of the general requirement can
