Title:
Infrared-detection-devices
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Description: The design mainly by infrared sensors, signal amplifier, voltage comparator, the delay circuit, sound the alarm circuit, power-delay circuit and power circuit. The human body all the time firing the human eye invisible infrared waves, but can be infrared sensors Q74 receiver, but the signal is very small. After the first stage transistor amplifier and the LM358 op amp level after amplification, signal amplification is large enough. In the voltage comparator LM393 and under the control of the delay circuit, to achieve good, when someone in a certain range of sensors, the detection of anti-theft alarm automatically.
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Infrared detection devices\硬件图\PCB_Project1.PrjPCB
..........................\......\Sheet1.SchDoc
..........................\......\红外线探测防盗硬件图.SchDoc
..........................\......\元件库\78L06.SchLib
..........................\......\......\Q74.SchLib
..........................\......\......\S8050.SchLib
..........................\设计报告\~$线探测防盗器设计报告.docx
..........................\........\系统框图.vsd
..........................\........\红外线探测防盗器设计报告.docx
..........................\硬件图\元件库
..........................\硬件图
..........................\设计报告
Infrared detection devices
