热释电红对外传感无线电遥控报警电路设计(同名63315).doc

PAGE PAGE 3 目 录 第一章 绪论············································3 1.1 课题研究的背景和方向··························· 1.2 课题研究的意义和目的··························· 1.3 设计要求与重点·································· 1.4 设计方案········································· 第二章 热释电红外传感器······························· 2.1 热释电红外传感器的结构原理···················· 2.2 菲涅尔透镜········································ 2.3 热释电红外传感器的主要技术参数················· 2.4 热释电红外传感器的安装与使用··················· 第三章 发射电路········································· 3.1 BISS0001芯片····································· 3.2 编码集成电路YL5026······························ 3.3 HYPERLINK /TWH8778-p.htm \o TWH8778货源和PDF资料 \t _blank TWH8778的应用·································· 3.4 无线电发射电路···································· 第四章 接收电路·········································· 4.1 译码集成电路YL5027······························· 4.2 无线电接收电路中JD400的应用···················· 第五章 热释电红外探测数字编码无线报警系统············ 5.1电路组成············································ 5.2工作原理············································ 设计总结············································· 参考文献············································· 附录·················································· 第一章 绪 论 1.1 课题研究的背景和方向 热释电红外传感器是一种被动式调制型温度敏感器件，利用热释电效应工作，它是通过目标与背景的温差来探测目标的。其响应速度虽不如光子型，但由于它可在室温下使用、光谱响应宽、工作频率宽，灵敏度与波长无关，容易使用。这种探测器，灵敏度高，探测面广，是一种可靠性很强的探测器。因此广泛应用于各类入侵报警器，自动开关、非接触测温、火焰报警器等，目前生产有单元、双元、四元、180°等传感器和带有PCB控制电路的传感器。常用的热释电探测器如：硫酸三甘钛（TGS）探测器、铌酸锶钡（SBN）探测器、钽酸锂（LiTaO3）探测器、锆钛酸铅（PZT）探测器等。热释电红外传感器本身不发任何类型的辐射，器件功耗很小，隐蔽性好。价格低廉。在电子防盗、人体探测器领域中，热释电红外探测器的应用非常广泛，因其价格低廉、技术性能稳定而受到广大用户和专业人士的欢迎。 1.2 课题研究的意义和目的 随着时代的不断进步，人们对自己所处环境的安全性提出了更高的要求，尤其是在家居安全方面，不得不时刻留意那些不速之客。现在现在很多小区都安装了智能报警系统，因而大大提高了小区的安全程度，有效保证了居民的人身财产安全。由于红外线是不见光很强的隐蔽性和必威体育官网网址性，因此在防盗、警戒等安保装置中得到了广泛的应用。此外，在电子防盗、人体探测等领域中，被动式热释电红外探测器也以其价格低廉、技术性能稳定等特点而受到广大用户和专业人士的欢迎。 目前国内使用的各类防盗、保安报警器基本都是以超声波、主动式红外发射／接收以及微波等技术为基础。而这里所设计的被动式红外报警器则采用了美国的传感元件——热释电红外传感器。这种热释电红外传感器能以非接触形式检测出人体辐射的红外线，并将其转变为电压信号，同时，它还能鉴别出运动的生物与其它非生物。热释电红外传感器既可用于防盗报警装置，也可以用于自动控制、接近开关、遥测