基于单片机人体红外报警系统【物联网开题报告外文翻译说明书论文】.zip
收藏
资源目录
压缩包内文档预览：(预览前15页/共42页)
编号：22399314
类型：共享资源
大小：2.18MB
格式：ZIP
上传时间：2019-10-16
上传人：小***
认证信息
个人认证
林**（实名认证）
福建
IP属地：福建
50
积分
- 关 键 词：
-
物联网开题报告外文翻译说明书论文
基于单片机人体红外报警系统【物联网开题报告外文翻译说明书论文】.zip
- 资源描述：
-
基于单片机人体红外报警系统【物联网开题报告外文翻译说明书论文】.zip,物联网开题报告外文翻译说明书论文,基于单片机人体红外报警系统【物联网开题报告外文翻译说明书论文】.zip
- 内容简介：
-
毕 业 设 计（论 文）任 务 书1本毕业设计（论文）课题应达到的目的： 培养和增强学生以下能力与技能：(1)单片机软硬件知识基础与实践能力；(2)电路设计及分析能力；(3)论文撰写能力；(4)学习能力与研究精神2本毕业设计（论文）课题任务的内容和要求（包括原始数据、技术要求、工作要求等）： 智能的入侵报警系统是智能安防的重要组成部分。本课题“基于单片机的人体红外报警系统”通过对人体红外特征的识别，达到人体检测的目的。课题的成果可用于安防、自动门等需要人体识别的场合。课题将包括单片机、人体红外传感器、传感器驱动电路等主要组成部分。通过单片机来采集人体红外传感器的信号，并对干扰信号进行滤除，使信号采集准确、可靠。要求学生进行系统设计，实验平台搭建，并进行毕业论文撰写。毕 业 设 计（论 文）任 务 书3对本毕业设计（论文）课题成果的要求包括图表、实物等硬件要求： (1) 毕业论文；(2) 可进行系统演示的实体；4主要参考文献： 1 王孟禄, 张光彪. 红外报警实验装置的设计J. 实验室科学, 2015, 18(3): 37-392 徐伟. 光电传感器的研究与应用J. 科技创新导报, 2010, (12): 42-433 朱仁盛, 曲波. 光电传感器的应用J. 煤矿机电, 2010, (3): 101-1024 何希才. 常用集成电路应用实例M. 北京:电子工业出版社, 2007.5 于爽, 管敏杰. 一种新型光电报警器的设计J. 科技信息, 2011, (20): 142-1436 王华祥, 张淑英. 传感器原理及应用M. 天津:天津大学出版社, 2007.7 贾伯年, 俞朴, 宋爱国. 传感器技术M. 南京:东南大学出版社, 2007.8 孙丽英, 张景春, 葛超. 基于红外技术的光电报警系统的研究J. 微计算机信息, 2007(14): 305-306.9 罗倩, 姚慧, 李潇. 光电报警器的设计J. 科协论坛, 2011(7): 98-99.10 刘长文, 赵玮, 张清华. 红外光电报警器的研究J. 光学技术, 2006(Z1): 269-270.11 赵新华, 郝阳, 刘洋, 吕淑萍. 红外报警系统设计J. 应用科技, 2013.4, 40(2): 47-52.12 刘舒祺, 施国梁. 基于热释电红外传感器的报警系统J. 国外电子元器件, 2005(3): 18-20.13 罗晴兰. RS-485总线通信技术在红外线报警系统中的应用J. 电工电气, 2009(5): 26-30.14 赵继文. 传感器与应用电路设计M. 北京: 科学出版社, 2002.15 李建. 热释电传感器原理与应用J. 传感器世界, 2005, 11(7): 34-36.16 杨波, 陈忧先. 热释电红外传感器的原理和应用J. 仪表技术, 2008(6): 66-68.17 胡光龙, 秦世引. 动态成像条件下基于SURF和Meanshift的运动目标高精度检测J. 智能系统学报, 2012, 7(1): 61-68.18 石磊, 范志刚. 虚拟红外成像器件的模拟输出电路设计J. 自动化技术与应用, 2012, 31(1): 58-61.19 栗鹏辉, 王萧吟, 杨炳吉, 肖毅, 王喜利, 王金龙, 张艳立, 郑龙飞, 李坤. 红外对射的无线发射新型智能红外报警系统J. 辽宁工程技术大学学报(自然科学版), 2015.3, 34(3): 428-432.20 梁光清. 基于被动式红外探测器的人体识别技术研究D. 重庆: 重庆大学, 2009.21 尚小燕, 姜旭, 武继安. 热释电红外报警系统设计J. 现代科学仪器, 2012, 2: 65-67.22 赵岩, 符如康, 张兵. 掘进机周围人体红外报警系统的应用J. 现代矿业, 2014.2(2): 121-122.23 丁英丽. 热释红外传感器的原理及应用J. 仪器仪表与分析监测, 2002(4): 15-16.24 樊泽明, 梁振涛, 马龙. 一种基于单片机的智能小车设计J. 工业仪表与自动化装置, 2014(2): 69-73. 毕 业 设 计（论 文）任 务 书5本毕业设计（论文）课题工作进度计划：2015.11.102015.12.13 调研、收集相关资料、对学生进行初步辅导，拟题、选题、填写任务书；2015.12.152015.12.31 学生查看任务书，为毕业设计的顺利完成，进行前期准备。12月31日前正式下发任务书；2016.01.092016.04.05 学生在指导教师的具体指导下进行毕业设计创作；拟定论文提纲或设计说明书（下称文档）提纲；撰写及提交开题报告、外文参考资料及译文、论文大纲；在2016年4月5日前学生要提交基本完成的毕业设计创作成果以及文档的撰写提纲，作为中期检查的依据。指导教师指导、审阅，定稿由指导教师给出评语，对论文主要工作未通过的学生下发整改通知；2016.04.062016.04.10 提交中期课题完成情况报告给指导教师审阅；各专业组织中期检查（含毕业设计成果验收检查）；2016.04.112016.05.10 进行毕业设计文档撰写；2016年5月8日为学生毕业设计文档定稿截止日；2016年5月9日-13日，指导教师和评阅教师通过毕业设计（论文）管理系统对学生的毕业设计以及文档进行评阅，包括打分和评语。5月1日前，做好答辩安排，通知学生回校进行答辨；2016.05.142016.05.15 查看答辩安排，毕业设计（论文）小组答辩；2016.05.162016.05.29 对未通过答辨的学生进行二次答辨，完成毕业设计的成绩录入；2016.05.302016.06.07 根据答辩情况修改毕业设计（论文）的相关材料，并在毕业设计（论文）管理系统中上传最终稿，并且上交纸质稿。2016年6月7日为学生毕业设计文档最终稿提交截止日；2016.06.072016.06.30 各系提交本届毕业设计（论文）的工作书面总结及相关材料。所在专业审查意见：通过负责人： 2015 年 12 月17 日 毕 业 设 计（论文） 开 题 报 告 1结合毕业设计（论文）课题情况，根据所查阅的文献资料，每人撰写不少于1000字左右的文献综述： 本课题研究的题目是基于单片机的智能安防系统，具体的实现方式是通过红外传感器进行探测、监控，单片机控制报警器与其他设备。 1.设计（论文）的背景随着技术的进步和安全意识的增强，人们越来越重视家庭、私人空间的财产安全和人生安全。因此，具有防盗报警功能的电子设备有广阔的发展与市场前景。本系统采用的是被动式红外探测系统，红外线是不可见光，具有很强的隐蔽性,所以在安防报警系统中具有广泛的应用。而基于单片机的红外报警系统具有辐射小、隐蔽性高、性能稳定。最重要的是具有全天候、不受很多条件限制的特性，且价格较为低廉，所以有着很高的开发价值。2. 设计（论文）涉及的物理原理红外线是太阳光线中众多不可见光线中的一种，由英国科学家赫歇尔于1800年发现，又称为红外热辐射，他将太阳光用三棱镜分解开，在各种不同颜色的色带位置上放置了温度计，试图测量各种颜色的光的加热效应。结果发现，位于红光外侧的那支温度计升温最快。因此得到结论：太阳光谱中，红光的外侧必定存在看不见的光线，这就是红外线。也可以当作传输之媒介。太阳光谱上红外线的波长大于可见光线，波长为0.751000m。红外线可分为三部分，即近红外线，波长为(0.75-1)(2.5-3)m之间；中红外线，波长为(2.5-3)(25-40)m之间；远红外线，波长为(25-40)l500m 之间。红外线所具有的物理性质有:热效应、穿透云雾的能力强3. 两种人体红外报警的介绍 （1）主动式红外报警系统：利用光束遮断方式的探测器当有人横跨过监控防护区时，遮断不可见的红外线光束而引发警报。常用于室外围墙报警，它总是成对使用：一个发射，一个接收。发射机发出一束或多束人眼无法看到的红外光，形成警戒线，有物体通过，光线被遮挡，接收机信号发生变化，放大处理后报警。红外对射探头要选择合适的响应时间：太短容易引起不必要的干扰，如小鸟飞过，小动物穿过等；太长会发生漏报。通常以10米/秒的速度来确定最短遮光时间。若人的宽度为20厘米，则最短遮断时间为20毫秒。大于20毫秒报警，小于20毫秒不报警。优势：主动式红外线报警器具有很远的防范距离，是被动式红外线报警器防范距离的十几倍。劣势：主动式红外线报警器价格较为昂贵，不易组网。应用领域：城市安防、小区、工厂、公司、学校石油、化工、燃气输配等众多领域。 （2）被动式红外报警系统：被动式红外线报警器是根据对外界红外能量的探测来判断是否有人移动的。人的体温一般在37度左右，会释放波长约为10m的红外线，这种红外能量不同于周围环境中的，一旦报警器在其防范区域内探测到波长为10m左右的红外线，分析处理后便会发出警报信号。分析处理的过程是这样，人体发射出的红外线首先通过菲涅尔滤光片进行增强，增强之后聚集在红外感源(一般采用热释电元件)上，而热释电元件一旦接受到人体红外线，温度便会发生变化，并释放电荷使得电荷不守恒，在电路中一旦检测到这种情况便确定有人入侵，产生报警信号。优势：单个设备便宜，安装维护简单，有大规模组网的优势。劣势：检测区域有限，需要安装较多的该类设备才能保证安防需要。应用领域：家庭、别墅、仓库等。4. 设计所需主要元件介绍 (1)单片机STC89C52单片机STC89C51所用的内核：MCS51单片机的内部总体结构其基本特性如下：8位CPU、片内振荡器、4k字节ROM、128字节RAM、21个特殊功能寄存器、32根I/O线、可寻址的64k字节外部数据、程序存贮空间、2个16位定时器、计数器中断结构：具有二个优先级、五个中断源、一个全双工串行口、位寻址（即可寻找某位的内容）功能，适于按位进行逻辑运算的位处理器。除128字节RAM、4k字节ROM和中断、串行口及定时器模块外，还有4组I/O口P0P3，余下的就是CPU的全部组成。我们选用的是STC89C52：STC89C52是STC公司生产的一种低功耗、高性能CMOS8位微控制器，具有 8K 在系统可编程Flash存储器。STC89C52使用经典的MCS-51内核，但做了很多的改进使得芯片具有传统51单片机不具备的功能。在单芯片上，拥有灵巧的8 位CPU 和在系统可编程Flash。 （2）热释电红外传感器：硫酸三甘酞(LATGS)和钛锆酸铅热释电红外传感器的主要材料，是钽酸锂(LiTao3 )(PZT)，其内部结构与外型。它是在钛酸钡一类压电晶体上，上下表面设有电极，并在表面加有黑色膜。当有红外线间歇地照射时，其表面温度上升，使晶体内部的原子排列产生变化，即引起自发极化电荷。称此现象为热释电效应，为热电效应之一种。热释电效应产生的表面电荷是暂时的，只要它出现，便很快被空气中的各离子所中和。为此，用热释电效应制作红外传感器时，多是在它的元件前面加有机械式的周期遮光装置，以便使自发极化电荷周期性地出现，只有检测移动物体时不用。由于热释传感器的输出阻抗很大，输出电压信号又极微弱，故在传感器内部附加一只场效应管与一个薄膜电阻，使其阻抗进行变换.利用负载电阻，有的热释传感器无电阻，需外接。为实现不同的检测目的，在进入红外线的窗口上设有滤光镜，将不需要的光谱滤掉。双元件的特点一是当人射的能量顺序地射到两个元件时，由于两只元件为串联，其输出比一只元件高一倍；另是由于两只元件为逆向相连接，对于相同且同时输入的能量将相互抵消，如太阳光中的红外线干扰和环境温度变化所引起的误差等。防止外人人侵的热释电红外传感器应用电路，如当有人进入欲保护的视野范围内时，传感器即产生一交流感应电压，其频率与人体移动速度有关，通常在56Hz左右。它可控制1012m的移动人体，其视野约70度。参考文献：1 王孟禄, 张光彪. 红外报警实验装置的设计J. 实验室科学, 2015, 18(3): 37-392 徐伟. 光电传感器的研究与应用J. 科技创新导报, 2010, (12): 42-433 朱仁盛, 曲波. 光电传感器的应用J. 煤矿机电, 2010, (3): 101-1024 何希才. 常用集成电路应用实例M. 北京:电子工业出版社, 2007.5 于爽, 管敏杰. 一种新型光电报警器的设计J. 科技信息, 2011, (20): 142-1436 王华祥, 张淑英. 传感器原理及应用M. 天津:天津大学出版社, 2007.7 贾伯年, 俞朴, 宋爱国. 传感器技术M. 南京:东南大学出版社, 2007.8 孙丽英, 张景春, 葛超. 基于红外技术的光电报警系统的研究J. 微计算机信息, 2007(14): 305-306.9 罗倩, 姚慧, 李潇. 光电报警器的设计J. 科协论坛, 2011(7): 98-99.10 刘长文, 赵玮, 张清华. 红外光电报警器的研究J. 光学技术, 2006(Z1): 269-270.11 赵新华, 郝阳, 刘洋, 吕淑萍. 红外报警系统设计J. 应用科技, 2013.4, 40(2): 47-52.12 刘舒祺, 施国梁. 基于热释电红外传感器的报警系统J. 国外电子元器件, 2005(3): 18-20.13 罗晴兰. RS-485总线通信技术在红外线报警系统中的应用J. 电工电气, 2009(5): 26-30.14 赵继文. 传感器与应用电路设计M. 北京: 科学出版社, 2002.15 李建. 热释电传感器原理与应用J. 传感器世界, 2005, 11(7): 34-36.16 杨波, 陈忧先. 热释电红外传感器的原理和应用J. 仪表技术, 2008(6): 66-68.17 胡光龙, 秦世引. 动态成像条件下基于SURF和Meanshift的运动目标高精度检测J. 智能系统学报, 2012, 7(1): 61-68.18 石磊, 范志刚. 虚拟红外成像器件的模拟输出电路设计J. 自动化技术与应用, 2012, 31(1): 58-61.19 栗鹏辉, 王萧吟, 杨炳吉, 肖毅, 王喜利, 王金龙, 张艳立, 郑龙飞, 李坤. 红外对射的无线发射新型智能红外报警系统J. 辽宁工程技术大学学报(自然科学版), 2015.3, 34(3): 428-432.20 梁光清. 基于被动式红外探测器的人体识别技术研究D. 重庆: 重庆大学, 2009.21 尚小燕, 姜旭, 武继安. 热释电红外报警系统设计J. 现代科学仪器, 2012, 2: 65-67.22 赵岩, 符如康, 张兵. 掘进机周围人体红外报警系统的应用J. 现代矿业, 2014.2(2): 121-122.23 丁英丽. 热释红外传感器的原理及应用J. 仪器仪表与分析监测, 2002(4): 15-16.24 樊泽明, 梁振涛, 马龙. 一种基于单片机的智能小车设计J. 工业仪表与自动化装置, 2014(2): 69-73. 毕 业 设 计（论文） 开 题 报 告 2本课题要研究或解决的问题和拟采用的研究手段（途径）： 1、本课题要解决的问题（1）单片机的学习与应用方法；（2）分析人体红外报警的几种原理、应用环境及优缺点；（3）如何设计一个完整的红外报警系统； （4）分析报警系统中误报或漏报的原因，找出解决方法；2、设计途径（1）从书上或网上找资料，选择一款合适的单片机应用于本课题。（2）分析外对射、红外反射、热释红外等不同的检测方法，并学习与分析其原理、应用环境等。（3）进行原理、电路设计，并建立实物平台进行实验，完成一个完整的红外报警系统。（4）对设计好的报警系统进行实验、分析，找出系统中薄弱环节，进行分析、升级。毕 业 设 计（论文） 开 题 报 告 指导教师意见：1对“文献综述”的评语：对课题的应用背景、意义以及应用场景进行了说明；综述了技术发展历史，以及技术发展趋势。基本合格。 2对本课题的深度、广度及工作量的意见和对设计（论文）结果的预测：课题有一定的应用广度，研究深度适中，工作量适中。预计成果：可演示的硬件，以及毕业论文。3.是否同意开题： 同意 不同意 指导教师： 2016 年 01 月 03 日所在专业审查意见：同意 负责人： 2016 年 04 月 22 日说明：要求学生结合毕业设计（论文）课题参阅一篇以上的外文资料，并翻译至少一万印刷符（或译出3千汉字）以上的译文。译文原则上要求打印（如手写，一律用400字方格稿纸书写），连同学校提供的统一封面及英文原文装订，于毕业设计（论文）工作开始后2周内完成，作为成绩考核的一部分。原文：Title：Passive-type infrared sensor system for detecting human body Author: H Tomooka T Sugimoto1. Field of the InventionThe present invention relates to a passive-type infrared sensor system for thenon-contact detection of the presence or absence of a human body within a predetermined monitoring space in reference to change in quantity of infrared energies irradiated from the monitoring space and, more particularly, to the passive-type infrared sensor system which may be applied to a trigger switch for controlling activation of a security device such as, for example, a burglar alarm device.2. Description of the Prior ArtA burglar alarm device has long been well known in the art which switches an illuminator lamp on, activates a signaling lamp to blink or activates an alarming buzzer or siren to emit an alarm in the event an unauthorized trespasser enters the predetermined watch area. In this burglar alarm device, a passive-type infrared sensor assembly for detecting a human body is generally employed as a trigger switch. This known passive-type infrared sensor assembly is disclosed in, for example, the Japanese Laid-open Patent Publication No. 6-52450, published Feb. 25, 1994, and includes an optical system such as a lens element having an angle of coverage that defines the predetermined watch area to be monitored, and an infrared detecting element such as a pyroelectric element for receiving through the optical system infrared energies irradiated from the watch area and for converting the incident infrared energies into an electric output signal of a level proportional to the amount of change of the incident infrared energies.According to the above mentioned publication, change in amount of the incident infrared energies irradiated from the watch area is monitored at all times in reference to the level of the electric output signal and, in the event of the presence of a human body within the watch area, the amount of infrared energies incident on the infrared detecting element through the optical system undergoes a change, i.e., increases or decreases, by a quantity corresponding to the difference between the amount of infrared energies irradiated from the background within the watch area and the amount of infrared energies irradiated from the human body. Accordingly, the presence or absence of the human body, that is, an unauthorized trespasser within the watch area can be detected in reference to the change in amount of the incident infrared energies.Where the infrared sensor assembly for detecting the human body is used as a trigger switch for the burglar alarm device of the type described above, it is a general practice to secure the infrared sensor assembly to an exterior wall surface of a building or a house with a viewing direction of the optical system oriented generally horizontally and also to adjust the sensitivity of detection of the incident infrared energies so that the watch area can extend a few meters away from the exterior wall surface. In other words, by monitoring a temperature difference between the background and the watch area, entry of the human body within the watch area is detected when the temperature within the watch area varies to increase.However, where the infrared sensor assembly is installed outdoor such as at the exterior wall surface of the building or house, the presence of an object which provides a relatively large heat source at a location distant from the watch area, or passage of an object which provides a heat source across the watch area, may constitute a cause of change in quantity of the incident infrared energies as is the case when the human body enters the watch area, resulting in an erroneous generation of a human detection signal indicative of the presence of the human body within the watch area. By way of example, if while a high temperature source such as a boiler is located a distance away from the watch area an object passes by between the boiler and the watch area, or if an automotive vehicle such as a passenger car or a truck having an engine generating a considerable amount of heat moves at a place distant from the watch area, the amount of the infrared energies incident upon the infrared sensor assembly fluctuates considerably and, therefore, the human detection signal may often be generated erroneously.Also, the burglar alarm device is generally set in an active state during the night to watch the watch area to monitor any possible entry of an unauthorized trespasser into the watch area. This burglar alarm device is also often set in the active state even during the daytime and this may occur when people in the house equipped with the burglar alarm device leave the house vacant. In such case, depending upon the orientation of the optical system sunlight may directly impinge upon the optical system. Considering that the sunlight has a relatively wide region of wavelength including an far infrared region, direct incidence of the sunlight will result in generation of an erroneous or false human detection signal. In this way, where the burglar alarm device is installed outdoors, the burglar alarm device may be erroneously operated depending on environments at a location distant from the space to be monitored, that is, the predetermined watch area.Accordingly, it may be contemplated to orient the viewing angle of the optical system for collecting the infrared energies diagonally downwardly towards a point on a ground surface so that only the infrared energies irradiated from the watch area can be incident upon the light receiving element of the burglar alarm device. However, this contemplated design will also result in an erroneous operation of the burglar alarm device. Specifically, when a pet or a small animal such as, for example, a dog or cat, run loose in the garden enters the watch area, the amount of the incident infrared energies will be changed by infrared energies irradiated from the small animal in the garden and, consequently, the burglar alarm device may generate the false human detection signal.3.Summary of the InventionAccordingly, the present invention is devised to substantially eliminate the problems and inconveniences inherent in the prior art infrared sensor assembly and is intended to provide an improved passive-type infrared sensor system of a type effective to avoid any possible erroneous operation which would otherwise occur under the influence of the presence of the heat source distant away from the watch areas, direct sunlight incident upon the light receiving element and/or entry of a small animal into the watch area and also effective to detect only entry of a human body into the watch areas.In order to accomplish this object, the present invention provides a passive-type infrared sensor system which comprises first and second sensor units each including a first or second light receiving element and a first or second optical system. The first sensor unit has a viewing direction oriented towards an upper half of a human body so as to define a first watch area clear of a ground surface. On the other hand, the second sensor unit has a similar viewing direction oriented diagonally downwardly towards a point on the ground surface spaced a predetermined watch distance away from where it is installed so as to define a second predetermined watch area below the first watch area.The passive-type infrared sensor system of the present invention also comprises first and second level detecting circuits each operable to output a detection signal only when the level of an electric output signal from the associated first or second sensor unit exceeds a predetermined reference level, and a human detecting circuit for outputting, when the detection signals are outputted respectively from the first and second level detecting circuits, a human detection signal indicative of entry of a human body within a monitoring zone including the first and second watch areas.In the passive-type infrared sensor system of the present invention, in the event that the infrared energies irradiated from the relatively high heat source located a distance away from the watch areas fluctuate or direct sunlight falls thereupon, those infrared energies will be little impinge upon the second sensor unit having its viewing direction oriented diagonally downwardly. Instead, only the electric output signal from the first light receiving element of the first sensor unit having its viewing angle oriented horizontally exceeds the predetermined level and, therefore, there is no possibility of the human detection signal being generated.Also, in the event that the small animal such as a dog or a cat enters the watch area, little infrared energies irradiated from such small animal will fall on the first sensor unit and, instead, the electric output signal from the second light receiving element of the second sensor unit exceeds the predetermined level and, therefore, even in this case, there is no possibility of the human detection signal being generated.On the other hand, only when a human body enters the watch areas, infrared energies irradiated from upper and lower halves of the human body are received by the first and second light receiving elements through the first and second optical systems, respectively, resulting in that the respective electric output signals from the first and second light receiving elements exceed the predetermined levels. Accordingly, the presence of the human body within the watch areas can be detected and the human detection signal can be outputted from the human detecting circuit.In this way, with the passive-type infrared sensor system of the present invention, entry of a human body into the watch areas can be highly accurately detected while securing an avoidance of any possible erroneous operation which would otherwise result in under the influence of the presence of the heat source distant away from the watch areas, direct sunlight incident upon the light receiving element and/or entry of a small animal into the watch area.Also, since the zone in which the presence or absence of the human body can be detected by the second sensor unit is limited to cover from where it is installed to the point on the ground surface spaced the predetermined watch distance away therefrom. Accordingly, there is no possibility that a false alarm may be issued as a result of detection of the presence of the human body entering in a zone outside the zone where monitoring is required.Preferably, each of the first and second level detecting circuit is of a type capable of outputting a detection signal and a non-detection signal one at a time, which signals are binary signals, and the human detecting circuit is employed in the form of an AND gate circuit which can be triggered on upon receipt of the binary signals, the passive-type infrared sensor system can be assembled compact and simplified in structure.Also preferably, the second sensor unit is of a design wherein the second watch area can be adjusted in position in a vertical direction substantially perpendicular to the ground surface. By adjusting the second sensor unit, the watch distance can be varied suitably. If for this purpose the second sensor unit is so designed that while the second optical system is fixed in a housing accommodating the first and second sensor units therein, the second light receiving element is supported for adjustment in position in the vertical direction, the watch distance can be varied with no need to move the second optical system. Thus, since according to the present invention the second optical system need not be moved to change the watch distance, the second optical system can be concurrently used as a part of a covering of the sensor assembly while exposing itself to the outside, thereby making it possible to simplify the infrared sensor system as a whole.Furthermore, the first and second sensor units are preferably of a design wherein the associated watch areas can be adjusted leftwards or rightwards. This design makes it possible to adjust not only the watch distance, but also the first and second watch areas in a direction leftwards or rightwards as desired.In order for both of the watch distance and the watch areas to be adjustable in the manner described above, the use may be made of a retainer member and a rotary support member. In this case, while the first and second optical systems of the first and second sensor units are fixedly supported by the housing, the retainer member referred to above supports fixedly the first light receiving element of the first sensor unit, but supports adjustably the second light receiving element of the second sensor unit for movement in a direction up and down. The rotary support member is secured to the housing for rotatably supporting the retainer member. By this design, with a simplified structure adjustment of the watch distance and the watch areas is possible.Preferably, the respective optical systems of the first and second sensor units may form a part of a front wall of the covering of the housing. This is particularly advantageous in that the assembly can be simplified in structure.译文： 被动式人体红外线传感器系统Author: H Tomooka T Sugimoto1.发明领域 本发明涉及一种被动式非接触式红外线传感器系统, 监视预定监视的空间内存在或不存在人体，并可以改变监视角度。红外线照射器，用于照射其中应用于一个触发开关，常用于控制激活安全设备。诸如，被动式红外线传感器系统中的防盗报警器。现有技术制造的的防盗报警系统是早已公知的技术。其激活一个照明灯，再激活一个信令灯闪烁或激活蜂鸣器发出声音从而发出警告，从而警报未经授权的闯入者非法进入预定监控的区域。在此防盗报警器内，用一个被动式红外线传感器组件，用于检测人体。一般使用一个触发开关，此广泛使用的无源式红外线传感器组件现已经被公开，例如日本专利公开号6-52450，专利香港2月25日1994年。包括光学系统，例如具有全覆盖角度的透镜元件用于监视预定的区域，和一个红外线检测元件用于接收从预定领域照射红外线能量，通过光学系统和用于照射的红外线系统，将红外能量以电平比例的公式，将光学的物理能量信号转换为电平信号。根据以上所提及的出版物的内容，在从监控区域照射的入射红外能量的量，和在所有时间在参考监控区域内监测到的电平信号进行比较。当在人体的存在的情况下，入射的红外能量通过光学系统在红外线检测元件上的量发生了变化，即增加或减少。以对应于从监控区域回馈的红外能量和照射量之间的能量差，测量出是否存在人体辐射的红外能量。因此，判断人体的存在或不存在。即从监控区域内是否有未授权侵入者可以在参照在入射红外能量的量的变化来检测。其中红外传感器组件，用于检测人体的，用来作为触发开关，用于上述类型的防盗报警器。它是将红外线传感器组件固定到建筑物的外墙表面或房屋内部，类似于一般的安装做法，取最佳的监视角度。从而让光学系统实现自动监控，以此调整检测入射红外能量的敏感性，使监控领域中可以从外壁表面向前延伸几米。换句话说，通过监测背景和监控区域之间的温度差，当监控领域内的探测到人的身体时，检测监控区域内温度的变化，从而达到监控的效果。2.存在的技术挑战然而，当红外线传感器组件被安装在室外的建筑物或房屋时，若有一个设备提供了一个相对大的热源，从而在遥远的位置接近并经过所要监控的区域，就会干扰安放在通道的外壁表面上的报警器。例如这个设备可以提供非监控需要的热源的信号，并且可构成改变的热源信号，在入射红外能量的量不变的情况下，当非人体进入监控领域，错误地导致产生一个人体检测信号，从而误判存在的监控领域内有人的身体的存在。以举例的方式说明，如果当一个高温源例如锅炉位于一距离监控区域中，被监控对象的锅炉和监控区域之间经过的时候，或者如果机动车辆如轿车或具有卡车发动机产生相当大的热量的物体移动时，经过从监控区到其他的地方。红
- 温馨提示:
1: 本站所有资源如无特殊说明，都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
2: 本站的文档不包含任何第三方提供的附件图纸等，如果需要附件，请联系上传者。文件的所有权益归上传用户所有。
3.本站RAR压缩包中若带图纸，网页内容里面会有图纸预览，若没有图纸预览就没有图纸。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 人人文库网仅提供信息存储空间，仅对用户上传内容的表现方式做保护处理，对用户上传分享的文档内容本身不做任何修改或编辑，并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容，请与我们联系，我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
人人文库网所有资源均是用户自行上传分享，仅供网友学习交流，未经上传用户书面授权，请勿作他用。
川公网安备: 51019002004831号