PLC 的六路抢答器设计
摘 要
伴随我国经济文化水平以及实业公司的不断的壮大，对于商业活动中公正的
竞争与裁决面临了一个瓶颈，比如很多的证券公司、股票与基金的交易加上不同
单位组织的各种智力竞赛等，面对于交易上遇到的种种障碍，抢答器孕育而生。
随着抢答器的不断完善，由最初的优先权编码器组成的抢答器逐渐发展成为 PLC
以及单片机组成的微型抢答器，把原来的复杂线路简单化、运算速度快速化、抗
干扰能力强并且大大提高的它的可靠性、精确性与功能多样性。更能满足商业或
者单位对于公然、公正、公平性质的交易尤其对于参加知识智力竞赛以及一些活
动的抢答器的需求，深受广大群众的青睐。本设计将以西门子 PLC 为核心控制器，
设计一个六路抢答器。设计内容包括主要由系统结构图、梯形图、程序指令等实
现在选手知识竞赛时抢答者的座位号的控制，及时公正的反应出抢答者的抢答内
容实现计分功能。
关键词：PLC；梯形图；抢答器；可编程序控制器
ABSTRACT
With China's economic and cultural levels and industrial company continues
to grow, for businessactivities in an impartial competition and awardof
facing a bottleneck, such as many securities companies, fund transactions
with different units of the various intelligence contest, etc., in the face
of on the hand is easy to encounter all sorts of obstacles, conceived and
students. With the continuous improvement of the responder, composed of
initial priority encoder responder gradually developed into composed of
PLC and single chip micro responder, the original complex has the
advantages of simple circuit,impartial competition and award is strong and
greatly improve the reliability, accuracy and multiple functions of. To
meet the business unit or the demand for openness, fairness of the
transaction the face of by the people of all ages. This design will be
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