单片机的智能型金属探测器的设计方案.pdf

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单片机的智能型金属探测器的设计方案.pdf

摘要本文介绍了一种基于 AT89S52单片机控制的智能型金属探测器重点研究了它的硬件组成、软件设计、工作原理及主要功能。该金属探测器以AT89S52单片机为核心，采用线性霍尔元件UGN3503作为传感器，来感应金属涡流效应引起的通电线圈磁场的变化，并将磁场变化转化为电压的变化，单片机测得电压值，并与设定的电压基准值相比较后，决定是否探测到金属。系统软件采用汇编语言编写。在软件设计中，采用了数字滤波技术消除干扰，提高了探测器的抗干扰能力，确保了系统的准确性。关键词：单片机金属探测器线性霍尔元件电磁感应 .ABSTRACT This paper describes the composition of hardware and software,working principles and the functions of an intelligent metal detector which mainly consistsof AT89S52 Single Chip Micyoco and linear Hall-Effect Sensor.The equipmentadopts UGN3503U linear hall-effect sensor as probe to detect thefield change of the centre of a search coil resulted from eddy current effect and turn thismagnetic field change into voltage change.The SCM measures the peak value ofvoltage and compares it with reference voltage.Then determine whether detect metal or not.In case of detection of a metallic mass,the Metal Detector providesan acoustical and optical alarm.The systems software adopts the assemblerlanguage to be written.Inside the software,the digital filter technology is utilized to eliminate the jamming.So the stability of system and the measuring veracity areimproved.KEYWORDS:SCM(Single Chip Micyoco metal detector.I/30 目录第一章绪论 11.1引言11.2探测器的发展状况及应用11.3本文研究的主要内容 2第二章系统的总体设计 32.1系统设计的理论依据 32.1.1线圈介质条件的变化 32.1.2涡流效应 42.2系统组成 4第三章硬件电路设计 63.1系统组成框图 63.2电路具体介绍 63.2.1.线圈振荡电路 83.2.2系统控制单元.133.2.3显示告警电路 21 3.2.4.电源电路 21第四章系统软件设计 22 4.1软件算法 22 4.2软件流程 22 4.2.1主程序流程图 224.2.2数字滤波程序设计 23第五章.结论.25 致谢26 参考文献 27文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W41/30 第一章绪论1.1引言金属探测器作为一种最重要的安全检查设备，己被广泛地应用于社会生活和工业生产的诸多领域。比如在机场、大型运动会(如奥运会、展览会等都用金属探测器来对过往人员进行安全检测，以排查行李、包裹及人体夹带的刀具、枪支、弹药等伤害性违禁金属物品。工业部门(包括手表、眼镜、金银首饰、电子等生产含有金属产品的工厂也使用金属探测器对出入人员进行检测，以防止贵重金属材料的丢失。目前，就连考试也开始启用金属探测器来防止考生利用手机等工具进行作弊。由此可见，金属探测器对工业生产及人身安全起着重要的作用。而为了能够准确判定金属物品藏匿的位置，就需要金属探测器具有较高的灵敏度。目前。国外虽然已有较为完善的系列产品，但价格及其昂贵；国内传统的金属探测器则是利用模拟电路进行检测和控制的，其电路复杂，探测灵敏度低，且整个系统易受外界干扰。1.2探测器的发展状况及应用金属探测器因其功能和市场应用领域的不同，分为以下几种：通道式金属探测器又称：金属探测门；简称：安检门）、手持式金属探测器、便携式金属探测器、台式金属探测器、工业用金属探测器和水下金属探测器。全球第一台金属探测器诞生于1960年，步入工业时代最初的金属探测器也主要应用于工矿业，是检查矿产纯度、提高效益的得力帮手。随着社会的发展，犯罪案件的上升，1970年金属探测器被引入一个新的应用领域安全检查，也就是今天我们所使用的金属探测门雏形，它的出现意味着人类对安全的认知已步入一个新纪元。一个产品的出现带动了一个行业的发展，于是安检这个既陌生又熟悉的行业开始进入市场。40多年过去了，金属探测器经历了几代探测技术的变革，从最初的信号模拟技术到连续波技术直到今天所使用的数字脉冲技术，金属探测器简单的磁场切割原理被引入多种科学技成果。无论是灵敏度、分辨率、探测精确度还是工作性能上都有了质的飞跃。应用领域也随着产品质量的提高延伸到了多个行业。70年代随着航空业迅速发展，劫机和危险事件的发生使航空及机场安全逐渐受到重视，于是在机场众多设备中金属探测门扮演着排查违禁物品的重要角色。同样在 70年代，由于金属探测门在机场安检中的崭露头角，大型运动会如奥运会）展览会及政府重要部门的安全保卫工作中开始启用金属探测门作为必不可少的安检仪器。文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W42/30 发展到 80年代，监狱暴力案件呈直线上升趋势，如何及早有效预防并阻止暴力案件发生成了监狱管理工作中的重中之重，在依靠警员对囚犯加强管理的同时，金属探测门再次成为了美国、英国、比利时等发达国家监狱管理机构必备的安检设备，形成平均每 300个囚犯便使用一台金属探测门用于安检；与此同时西方兴起的“寻宝热”，也使手持式、便携式金属探测器得到长足的发展。进入90年代，迅速升温的电子制造业成了这个时代的宠儿，大型的电子公司为了减少产品流失、结束员工与公司之间的尴尬局面，陆续采用金属探测门和手持式金属探测器作为管理员工行为、减少产品流失的利刃。于是金属探测器又有了它新的角色产品防盗。9.11事件以后,反恐成为国际社会一个重要议题。爆炸案、恐怖活动的猖獗使恐怖分子成了各国安全部门誓要打击的对象。此时国际社会对“安全防范”的认知也被提到一个新的高度。受9.11事件影响，各行各业都加强了保安工作的部署，正是受此影响金属探测器的应用领域也成功地渗透到其他行业。如：娱乐场所。公共娱乐场所的治安问题历来是社会各界关注的焦点，也是治安管理工作的难点。据统计，每年娱乐场所恶性打架斗殴事件和刑事案件发案率占60%以上，其作案凶器均是消费者随身带入娱乐场所。然而，此时简单的通道式金属探测门已不能完全满足安检的要求，安保人员需要的是一种能准确判定金属物品藏匿位置的安检产品。于是多区位金属探测技术孕育而生，它的诞生是金属探测器发展历史上的又一次变革，原来单一的磁场分布变成了现在相互叠和而又相对独立的多个磁场，再根据人体工程学原理把门体分为多个区段使之与人体相对应，相应的区段在金属探测门上形成相对的区域，这样金属探测门便拥有了报警定位功能。1.3本文研究的主要内容本文介绍的基于单片机的智能型金属探测器，采用灵敏度极高的线性霍尔元件作为传感器，感应由于金属出现引起的探测线圈周围磁场的变化，提高了检测精度:处理部件则采用 AT89S52单片机作为检测和控制核心，对检测结果进行分析判断，有效地保证了检侧原理的实施；此外，利用软件滤波的方法代替了传统探测器复杂的模拟电路器件，大大提高了系统的可靠性、灵敏度和抗干扰性。适用于对邮件、行李、包裹及人体夹带的伤害性金属物品如：刀具、枪械、武器部件、弹药和金属包装的炸药等）的检测，可用于海关、机场、车站、码头的安全检查。也可用于探测隐藏于墙内、护墙板内侧、空洞和土壤的上述物品和金属物。文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W43/30 第二章系统的总体设计2.1系统设计的理论依据金属探测器是采用线圈的电磁感应原理来探测金属的.根据电磁感应原理，当有金属靠近通电线圈平面附近时，将发生如下现象和效应:图2.1线圈介质条件的变化2.1.1线圈介质条件的变化当金属物接近通电线圈时，将使通电线圈周围的磁场发生变化如图2.1，对于半径为 R的单匝圆形电感线圈。当其中通过交变电流时，线圈周围空间产生交变磁场，根据毕奥-萨伐尔定律可计算出线圈中心轴线上一点的磁感应强度B为：=2-1）.其中，磁导率，为相对磁导率，为真空磁导率。对于紧密缠绕 N匝的线圈，线圈中心轴线上一点的磁感应强度则为：文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W44/30 2-2）由公式 2-2）可知，当线圈有效探测范围内无金属物时，和顺磁体(如锰、铬、钦等，较大，可以认为是导电不导磁的物质，主要产生涡流效应，磁效应可忽略不计；对于铁磁性金属，就确定为探测金属，CPU输出口 P1.0输出信号驱动发光二极管发光文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W46/30 报警，同时 P1.6控制蜂鸣器发出声响，进行声音报警。第三章硬件电路设计3.1系统组成框图硬件控制电路包括两个部分，一部分线圈振荡电路,包括:多谐振荡电路、放大电路和探测线圈。另一部分控制电路包括:U,GN3503型线性霍尔元件、可编程放大电路、峰值检波电路、模数转换器、AT89S52单片机、LED显示电路、声音报警电路及电源电路等。3.1系统组成框图3.2电路具体介绍文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2 ZT5G7V10Z9W4文档编码:CB1S1H6V7C2 HF7O9N3G1M2

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