sâmbătă, 3 august 2013

Internet Video Camera Security Systems - Attaching a Wireless Module -

This writeup is the third in a series detailing how to transform a webcam, also named as an IP camera, or an Internet camera into a complete surveillance and protection measure. Add lights, motion sensors, outdoor enclosures, wireless adaptors and even portable Internet cards to an Internet (IP) camera and you produce a powerful, yet economical electronic security personnel. These can be wonderful for watching out on holiday houses and RV's, remote job sites, outdoor businesses, such as quarries or power stations, stored equipment, or even as remote outdoor webcams. was to add a Passive InfraRed (PIR) sensor to the camera to activate it to send alerts and to upload pictures or videos of the events that sparked the detector. The 2nd step is to put in a floodlight to discourage would-be mischievousness or stealing. The 3rd step needs connecting a wireless module so that the cameras can be added without the need for data or video cabling.

Quality Article From: ICS, Provider of Solar Powered Security Cameras

A webcam is a video recording camera which transmits its images in real time to a computer or computer network, often via USB, ethernet or Wi-Fi. Their most popular use is the establishment of video links, allowing computers to act as videophones or videoconference places. This common function as a camera for the web presents the webcam its name. Other frequent uses include security surveillance and computer vision.

Webcams normally include a lens, an image detector, and some support electronics. Many lenses can be used, the most popular in consumer-grade webcams being a plastic lens that can be screwed in and out to determine the camera's focus. Fixed focus lenses, which have no provision for adjustment, are also available. As a camera system's depth of field is good for small imager formats and is greater for lenses with a large f-number (small aperture), the systems used in webcams have sufficiently large depth of field that the use of a fixed focus lens doesn't affect image sharpness a lot. Image detectors can be CMOS or CCD, the former being common for cheap cameras, but CCD cameras don't necessarily outperform CMOS-based cameras in the economical price range. Most consumer webcams are capable of providing VGA-resolution video at a frame rate of 30 frames per second. A lot of newer devices can create videos in -megapixel resolutions.

Support electronics check the image from the sensor and beam it to a local server computer via Ethernet cable or wireless bridge, permitting a wireless connection to the server computer. If a local host computer is not available, the cameras can be linked to the Internet straight, using the general wireless Internet cards, such as 3G and 4G cards from providers such as Verizon and Sprint. Some more powerful cameras have integrated processors that add a number of features, such as movement spotting transmission, email transmission, scheduled transmitting of still photos and videos. Some can even add still photos and video images within email alerts. Most webcams possess integrated microphones.

Install a wireless module (WiFi) to the camera. A wireless network usually is not wholly wireless because some part of equipment will likely be linked to the internet source by cable (cat 5 or cat 6). That connection depends on your equipment and the service type. Some internet modems have wireless router capability "built-in" but in that event the modem will still be wired to your wall or where ever the internet gets into the room. You will also be connected to the power socket. What you receive depends on what type of service you obtain, who supplies it, and what equipment is supplied.

The effective distance between the cameras and the wireless Internet access point changes because of surroundings and ability of the equipment. Presently the range can be up to three hundred ft for some devices without "extra help" but on the average many fundamental systems are rated as up to one hundred fifty feet. Closer commonly signifies improved signal intensity and video quality, but not all the time. Other factors like metal I-beams, cordless phones, wireless remote controllers and other electronic devices, among other things, can affect the quality of a signal. There are wireless extenders/relays accessible that can broaden the range of a wireless signal. Some are in the form of a powered antenna, some are similar to wireless adapters and are connected into a power socket along the route to a computer farther away. So the gadget relays the wireless signal to the different computers. Wireless connection can be adapted to computer devices, such as an IP, or Internet camera. This configuration permits the cameras to be placed hundreds of feet away from the Internet access point. One such camera is offered by Offsite Commander Systems.



access point vs router

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