智能竞赛抢答器的设计精要.doc

智能竞赛抢答器的设计 摘要 PLC是一种以微处理器为核心的工业通用自动控制装置，目前一般抢答器线路复杂，性能不高，灵活性差，特别是现在多路抢答器的诞生，实现起来更加困难，系统的稳定性差。本文介绍了利用PLC及外围接口电路实现的抢答系统，结构简单、易于编程、可靠性高，同时由于PLC的编程语言丰富，根据PLC控制系统的设计原理和PLC的选型、硬件配置，只要稍微修改程序，就可编出在不同条件下和不同用户要求的智力竞赛抢答计分系统，具有很强的使用性。还可以通过LED数码管显示出获得抢答权的编组号，还能实时动态显示各组选手的得分情况，时间提示发光提示、违例判别和不同分值的加减等功能。 关键词 抢答器 PLC 计分 动态显示 The intelligence contest robs the design that the answer accounts to divide system Abstract PLC is one kind of the autocontrol device being applied or used universally with the microprocessor industry for core , rush to reply the implement circuit is complicated , function block of wood height , flexibility are bad at present in general, especially, now multipath grabs coming into being replying an implement , realizes more difficult , systematic stability difference. Rushing making use of PLC and outer-ring interface circuit realization that the main body of a book has been introduced replies system , structure is simple , the programming , reliability are easily high, the programming language because of PLC enriches at the same time, the type , hardware controlling systematic design principle and the PLC selections according to PLC deploy, as long as revising procedure a bit , the intelligence competition may make up out under different condition and be unlike consumer call for right away rushes to answer counting score systematically , has very strong usage. Can rush to reply the right gand-up number by the fact that the LED numerical code has demonstrated acquisition, energy real time development demonstrates every score of athlete selected for a sports meet of group condition, time functions such as pointing out that the glowing hint , breach of rules differentiate between and being unlike Add-Subtract being allotted value. Keyword Rob an answer machine PLC Scoring The dynamic state show 1 引言 现在生活中越来越多的地方都会用到抢答器，人们经常在电视上看到各种各样的智力竞赛，其中都要用到抢答器。我们对PLC的基本工作原理和指令系统有了一定的了解，并将PLC应用于实际。 本设计由可编程控制器PLC及外围接口电路每路抢答选手的分机上各设有一个抢答按键和一个得分显示牌，方便选手们进行抢答、了解自