Old technology : based on pir motion sensor 传统技术：基于pir运动传感器。
2.
Seraphim engineering co . , electronic component distributor solution provider - sensor - pir sensor interface ic 幸贺股份有限公司，电子零件经销解决方案提供. -感应器系列- sensor ic
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Seraphim engineering co . , electronic component distributor solution provider - digital home - pir sensor interface ic 幸贺股份有限公司，电子零件经销解决方案提供. -手机- sensor ic
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The relative difference between values of dry density measured by wave velocity method and pir replacement method is in the range of 1 % 根据相关方程由实测波速推测压实干密度值，相对试坑置换法的实测值，误差在1 %范围内。
5.
Within all these years , shanghai yucheng industrial co . , ltd has accumulated a lot of professional experiences and technology in manufacturing the pir sensors . with our company ' s target in " quality no . 1 , faith no . 1 and service no . 1 " , we sincerely hope we canco - operate with all of you all over the world 上海育诚实业有限公司积累了多年专业生产红外传感器的经验和雄厚的技术力量，本着以“质量第一、信誉第一、服务第一”为宗旨，愿与各界朋友共创美好和舒适的未来。
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According to negative temperature coefficient of vbe and positive temperature coefficient of vt , a framework of band - gap voltage reference is investigated . the reference offer a source of pir , distributed three voltage , one as upper - threshold voltage of dual - threshold comparator , the other as lower - threshold voltage of comparator , the other as direct current voltage for second band - pass filter amplifier 同时利用pnp晶体管发射结电压的负温度特性和发射结差值电压的正温度特性设计了一个带隙基准电压源。此带隙基准电压源本身作为热释电红外传感器的电源电压,同时分压提供双限电压比较器的上限电平和下限电平以及第二级带通滤波放大器的直流电平。
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As a mix - mode chip , the application - specific controller including analog signal and digital signal processing block can be applied to receiving , amplifying , processing , controlling signals of pir , and offer a wide application in some fields . in analog circuits , by sub - threshold mosfet , a self - bias current source is presented , which has a high power supply restrain ratio and a complementary to absolute temperature characters 这款芯片是一款数模混合芯片,包括模拟信号处理(含模数接口模块)和数字信号处理两大模块,完整实现对红外信号的接收、放大、处理、控制,产生有效数字电平驱动继电器、可控硅等负载,应用于自动灯等多种场合。
