24-03-2015, 09:14 PM
I am Krishna , a second year E.T.C. student .I studied following theory about intelligent wireless video camera " video camera collects the images from the reference points and then converts into electronic signals. The collected images are converted from visible light into invisible electronic signals inside a solid-state imager. These signals are transmitted to the monitor, Each reference point is arranged with two infrared LED’s and one lamp. This arrangement is made to detect the presence of a person who is near the reference point. The reference point is nothing but restricted area, when any person comes near to any reference point, then immediately that particular reference point output will become high and this high signal is fed to the computer. Now the computer energizes that particular reference point lamp and rotates the video camera towards that reference point for collecting the images at that particular reference point. To rotate the video camera towards interrupted reference point, stepper motor is used" . I want to know that how is the lamp in the text useful to rotate camera towards reference point .