Oct 2011

security for business

wireless security home systemsThis is—as it sounds—a device that’s capable of detecting movement. What kind of motion it detects depends on the user’s custom settings. In the case of a home security camera, this will typically include any moving objects, and people in particular. The great feature of motion detection home security camera is its ability to send alerts the second it begins to record movement based on its settings. One of the great things about motion detection is that your camera still works for you in the background even when you’re away or logged out of the system. The best way to understand how motion detection works is to first look at how a camera functions. Inside every camera is the image sensor which the lens of the camera directs light to. The moment light reaches the image sensor, pixels then record how much light they receive. These dark and light areas then form the video images that we see. Motion detection works by comparing successive video images. So if the pattern of light changes between frames a change in pixels the smart camera concludes that something has moved and starts to record.

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Oct 2011

home security company

burglar alarms wirelessIn managed alarm systems, the control panel also checks the sensors to verify that they are still operational; if a sensor fails to reply, the center alerts the home owner of an out of order sensor. If the home owner activates the alarm system and the control center registers activity in the home, a signal is sent by the control to a buzzer, flashing lights or any other audiovisual alarm element. Our design for a functional keypad was the usage of an alternation of ports between inputs and outputs which is done by using the TRIS function. We started off by setting the first four ports of PORTB as the inputs and the latter four ports as the outputs. The first four ports are connected to the columns meanwhile the last four are connected to the rows. Moreover, as a justification for this reasoning is the fact that it is required to scan the columns for the pressed key and then scan the rows and the results will be decoded in a decoder telling us which button of the keypad was pressed.

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