您当前的位置:首页 >  调研报告 >  调研报告点评意见 > 内容

基于双联对置传感器的硬币机读特征检测系统

材料写作网    时间: 2020-07-05 04:28:33     阅读:

摘 要: 与硬币自动识别相关的硬币电磁参数称为硬币的机读特征。传统的硬币机读特征识别方法具有检测参数温飘大、一致性差、检测参数单一等缺陷。在此采用相关检测方法对硬币机读特征检测线圈的复阻抗变化进行检测,从而获得检硬币机读特征。检测系统采用DDS的正交激励信号具有波生波形良好,频率、相位和幅值稳定的有点。采用相关检测方法,电路从本质上改善了对硬币差异形成的微弱信号的捕获能力,有利于实现硬币机读特征的在线检测。利用双联对置涡流传感器能有效地克服温漂和提高信号的动态范围,每枚硬币可以检测两次,通过数据处理后可以获得更加准确的结果。结果表明该系统能够检测出微小的硬币机读特征差异,具有良好的稳定性和可重复性。

关键词: 复阻抗; 双联对置涡流传感器; 相敏检测; 硬币机读特征

中图分类号: TN919⁃34 文献标识码: A 文章编号: 1004⁃373X(2014)04⁃0138⁃05

System based on dual opposed sensor for detecting machine⁃readable features of coins

ZHANG Wu⁃jun1, SI Jun⁃feng2, HUANG xiao⁃lin2

(1. Nanjing CBPM Great Wall Financial Equipment Co., Ltd, Nanjing 210029, China;

2. School of Electronic Science & Engineering, Nanjing University, Nanjing 210093, China )

Abstract: Coins’ electromagnetic parameters related to automatic coin recognition are called coin machine readable features. Traditional method of automatic coin recognition has big defection temperature drift, poor consistency, sole detecting parameter and so on. In this paper, the method to detect complex impedance variation of coin machine readable feature detecting coil is proposed in this paper. The detecting system can generate orthogonal excitation signal, which has perfect waveform, and stable frequency, phase and amplitude. By the relevant detection method, the circuit can essentially improve the ability to capture the weak signal formed by the difference between coins. It is conducive to the realization of...

== 试读已结束,如需继续阅读敬请充值会员 ==
本站文章均为原创投稿,仅供下载参考,付费用户可查看完整且有格式内容!
(费用标准:38元/2月,98元/2年,微信支付秒开通!)
升级为会员即可查阅全文 。如需要查阅全文,请 免费注册登录会员
《基于双联对置传感器的硬币机读特征检测系统.doc》
将本文的Word文档下载到电脑,方便收藏和打印
推荐度:

文档为doc格式

相关热搜

《基于双联对置传感器的硬币机读特征检测系统.doc》

VIP请直接点击按钮下载本文的Word文档下载到电脑,请使用最新版的WORD和WPS软件打开,如发现文档不全可以联系客服申请处理。

文档下载
VIP免费下载文档

浏览记录