These FAQs are designed to provide a better understanding of several aspects touching to our service offer and related products, as well as legal and technical issues. They provide basic information, sometimes on quite complex topics, with links to more detailed information.
Video surveillance & remote monitoring
Video surveillance resumes today the best of electronics and computers technology (IP network, digital storage, high-definition (HD) sensors,… etc).
The camera is connected to a computer network and behaves like a network node (a computer for example). It is accessible through a unique IP address and has an integrated web server that returns the video stream from the sensor. The images sent by the camera (the stream) may be directly transmitted to be stored on a computer (server) with a specific software or saved to a “recorder” called NVR.
The resolution varies depending on the camera model, but is expressed in pixels, representing the number of colored points on an image.
Unlike a CCTV system, the number of licensed components is unlimited. The use of an IP network allows interoperability and integration with other systems, including access control and intrusion detection systems, as well as the ability to perform remote monitoring for additional sites.
The resolution of analog cameras is expressed in TV lines (TVL), which is the amount of lines on a pattern that the camera is capable of distinguishing. Once images are recorded digitally, the effective resolution is 768 x 576 pixels (PAL).
The number of components that this system can support is limited by the number of available inputs and outputs.
Decide which videosurveillance system to install is not the easiest thing to do since there are advantages and shortcomings to each type.
Eyepix Solutions will help you make the right choice by showing you the differences between the two systems so that you can select the installation that suits your needs.
Better quality images.
Compressed video streams and recordings.
IP Wires : 3x less expensive than CCTV wires.
Recording : all cameras in your network, even geographically separated, will only require a single recorder.
Security : Integrated video encryption and remote access controlled by passwords.
Bandwidth : Each camera accessed through a network requires a higher bandwidth compared to a single analogue CCTV system.
High flexibility and choice : The range of CCTV camera models is much more larger than that of IP variants. You’re more likely to find the camera that best suits you.
High compatibility: Most CCTV models are compatible.
Recording: Each monitored area needs its own DVR.
Limited capabilities: Some cameras do not offer zoom or audio capabilities.
The CCTV and IP cameras are connected to a digital recorder. This recorder is unique as it can receive and process analog and digital signals simultaneously. This allows to maintain the network of analog cameras already installed while including additional IP cameras.
Modernization of your video surveillance system.
Improvement of the architecture of your video surveillance system.
This provides a link between your video surveillance system and other systems such as access control, fire detectors, intercoms controllers or even alarms.
You can also benefit from smart image analysis capabilities such as : Motion detection, facial recognition, … etc
There are different compression modes; MPEG and MJEPG being most commonly used. Other types of compression include for example.
MPEG-1, MPEG-2, MPEG-4, H.263, H.264/AVC, …etc.
Surveillance cameras are the elements that allow to film the areas to be monitored.
There are two main surveillance camera technologies: analog(CCTV) and IP cameras.
These cameras exist in different types with varying options and characteristics: day/night camera, mini dome camera, motorized camera, Fixed camera … etcVideo surveillance recorders
The recorders allow to save the video streams acquired from the cameras. The recorder will offer the possibility of playback for the recorded video streams. It is also possible to include one or more hard drives of different capacities (500GB, 1TB or 2TB) into your recorder. Besides, several parameters are programmable on the recorder including: motion detection, video streaming for remote access … etc
There are two main categories of recorders: Digital video recorders (DVR) and IP recorders.
The DVR can accommodate a number of camera defined by the number of available channels.
A video surveillance screen allows you to view live video streams from the cameras or to playback the saved records on the hard disk of the recorder. The video surveillance screen is a requirement for setting up your video surveillance installation. Most installations are equipped with a 19 or 22 inch LCD monitor with a VGA input.
The screen quality is still important to view the images filmed by the cameras. Video surveillance wires
Analog video surveillance facilities are equipped with a wired connection between each camera and its corresponding recorder. KX6 is the most used CCTV cable type for analog video surveillance systems.
IP-based video surveillance installations are equipped with an RJ45 cable which connects the cameras to the network switch. Power supply of video surveillance cameras
Surveillance cameras need to be powered by an electrical power supply compatible with their needs. Video Surveillance Software
Video surveillance software is used to access cameras remotely over the internet. Usually, a video surveillance software is equipped with multiple features depending on the architectural complexity of your system or the available features in the installed cameras. Remote access via Internet
The evolution of technology today allows you to access your video surveillance cameras remotely given that your installation is connected to the Internet.
The image resolution
The resolution of the image of an analog camera is measured in TVL which is defined as the maximum number of alternating light and dark vertical lines that can be resolved per picture height. The greater the number of lines is, the better the image quality.
Standard resolution: 420 color lines
Good resolution : 540 color lines
High resolution : 600 color lines
Very high resolution : 700 color lines
The image resolution of an IP camera is usually expressed by the screen resolution.
Standard VGA resolution : 640 x 480px
High resolution S-VGA : 800 x 600px
High Definition HD 720P : 1280 x 720px (1.3 megapixels)
High Definition HD 1080P (Full HD) : 1600 x 1200px (2 megapixels)
This attribute determines the minimum amount of light required by your camera to operate properly. The brightness is measured in lux, so it is essential to judge the brightness of the area you’re willing to monitor when choosing your cameras if you want to ensure an optimal image quality.
The CCD sensor
CCD is the electrical component that captures the light signal and translates it into an image. Thus, the combination of the CCD sensor and chipset lets you get video streams. The CCD sensors and chipsets which Eyepix Solutions offers are high quality products manufactured by SONY, Panasonic and many other brands.
Lens determine the viewing angle of your cameras. They are available in several sizes to best adapt to the vision you want. They have a size of 2.5mm to 100mm which corresponds to an opening angle of 107° to 2.8°. The larger the lens size is, the greater the viewing angle is narrow and more remote areas will be closely filmed and the zoom will be much better. The choice of lens is essential since they can be regarded as the eyes of the camera.
The installation of a video surveillance system is strictly regulated by Algerian law. Obtaining an operating permit from local authorities is required for the installation of such a system. The authorization also protects the owner so he can use his recordings legally, making them admissible as evidence in case of litigation. Eyepix Solutions brings you all the legal and administrative information needed to install your video surveillance system.
Several laws govern the use of video surveillance systems:Executive Decree No. 09-410 of 23 Dhu Al Hijjah 1430 corresponding to December 10th, 2009 laying down security measures for activities related to sensitive equipment. Interministerial Order of 15 Dhu Al Kaada 1432 corresponding to October 13th, 2011 fixing the conditions and procedures for the acquisition, possession, utilization, use and disposal of sensitive equipment.
Intruder alarm systems
The intruder alarm is suitable for:
Houses or apartments.
The control panel is the heart of the alarm system. You will find it also in any type of alarm, be it intruder alarm, fire or gas.
The control panel manages the entire alarm system. It receives and analyzes the information emitted by the detectors and it will trigger the internal and external siren if necessary. Detectors:
– The opening detectors: Attached to doors or windows. These sensors detect intrusion attempts whenever a door or window is opened and transmit the information to the center which in turn launches the alert.
– The shock detectors: Shock detectors are extremely sensitive to small vibrations. They can also be mounted on walls and roofs.
– The curtain detectors: designed for indoor protection for windows and large glass doors in residential and commercial environments.
– Seismic detectors : Seismic detectors are designed to monitor safety deposit boxes, night deposits and ATMs.
– Passive infrared detectors: A passive infrared detector is an electronic device that measures the infrared light emitted by objects in its field of view. Movement or presence of humans are detected when an infrared source at a particular temperature is within the sensors’ field.
– Microwave detectors: The microwave technology is considered very old because it was considered “too sensitive”. The microwave RF detection device will capture all movements regardless of the temperature difference.
– Dual technology detectors: The dual technology sensors combine a passive infrared sensor with a Doppler microwave sensor.
– The internal siren.
– The external siren.
– FLASH. The transmitter
It is the transmitter, connected to a telephone line or a GSM module, which will signal the intrusion to the monitoring service and the owners of the buildings via preprogrammed numbers.
Wired alarm systems are interesting for individuals when the house is being built, the installation should be easily installed given that a reference distance is respected due to the propagation characteristics of high frequency waves.
Wired alarm system is preferred if the premises to be protected does not exceed an area of 100 m2 on one level.
Reliable : High reliability.
Electric power supply: No battery replacement. This need is eliminated through continuous power supply.
The wired alarms are difficult to move.
The installation of a new sensor requires new wiring.
All additional components are integrated quickly.
The motion detectors can be easily moved if you change the arrangement of furniture in a room.
Voice is digitized and then sent as packets like any other data transmitted over the corporate IP network.
In a VoIP architecture, it is very easy to add additional sites or enlarge an existing network, which is not the case with non-IP systems.
Fire Alarm Systems
Control and Signaling Equipment.
You can always contact us for other questions that touch to our service offer.