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The use of modern video surveillance systems is one of the most important aspects in ensuring security. A device such as a 4-camera video recorder for a car helps to monitor the situation around the car while driving. If an accident occurs, then with the help of this device it is possible to collect fragments of the general picture of the incident and thereby prove the innocence of the participant or confirm the assumptions about the chronology in which the event developed.
Four-camera DVRs are the most common model among other digital devices in Russia. A car DVR for 4 cameras is quite difficult, but it is fixed in the car for a long time and is designed not only to track the situation while driving, but while parking.
For drivers who want to be aware of what is happening around the car while driving, a special model of a car DVR with 4 cameras has been developed. Its installation helps to record in detail everything that happens, even at small viewing angles of each camera.
The scheme of work of the DVR with several cameras
Externally, the device consists of 4 separate chambers connected through the main unit. The monitor displays video images both separately from each camera and simultaneously from all four cameras using the "Quadrator" function. If there is no monitor, then you can view the recordings on a computer, mobile phone or on TV. Videos can be played back on other electronic devices using media on which information from the main unit is recorded. Modern DVRs are capable of supporting various memory cards like microSD, SDHC or USB.
Car DVR for 4 cameras performs the main functions:
- Recording the traffic situation with four cameras at once
- 24/7 vehicle surveillance via Wi-Fi or mobile internet.
When choosing a car DVR for 4 cameras, it is imperative to take into account the type of car in which it will be installed. The device is ideal not only for ordinary cars, whose owners care about safety, but also for equipping special purpose vehicles such as cash collection, police vehicles, ambulances or for transporting children, as well as for buses, trams and trolley buses. The difference between use on a regular car and public transport lies in the operating conditions, which take into account the level of vibration and noise, as well as temperature differences.
The use of the DVR in buses, trolleybuses and trams is not limited to just four cameras. Some brands of car DVRs additionally have audio and video inputs, thanks to which you can install more cameras and increase the range of the viewed area.
Better cameras can be installed in the passenger compartment
The car DVR has a set of useful functions that help to collect a complete picture of what happened. With the help of GPS, G-sensor and LDWS function, the video evidence is increased, as well as the information is protected from accidental destruction. And on the image itself, you can see the fixed coordinates, date and time, as well as the speed at which the driver was driving. From the video images from all four cameras, one can present one big picture of what happened, taking into account the smallest details. These data often play a decisive role in determining the fault of the participants in the accident. Some models of the device allow you to monitor the car using the Wi-Fi function around the clock, whether the car is in motion or parked.
The compact size of the device allows it to be fixed in the car in such a way as not to interfere with the driver's visibility and not attract attention. The main unit fits freely in the glove compartment, and the wires are hidden under the interior trim.
Camera locations allow tracking student movements and detecting errors
All four cameras shoot simultaneously, the quality of the video taken depends on the performance of the processor and the model of the DVR. For example, some devices are capable of providing HD-resolution shooting from all four cameras, others - only from the front ones.
The highest technical level of the device, as well as a complex installation system, explains the high cost of the DVR. But the installation is carried out once and does not require additional work during operation, and its functionality allows you to secure the driver and passengers on the trip.
A car owner who has a desire to equip his car with a 4-camera DVR must first make sure that the product is working properly and is of quality. Below are the criteria for evaluating a DVR before purchasing:
- CPU performance
- Camera optical performance
- Shooting quality
- Battery availability
- Functionality: shock sensor, GPS and more
The quality of the DVR and the image depends on the processor performance. A car DVR for 4 cameras records from one camera at a speed of ¼ from the initial value. Therefore, multi-camera recorders must have a very powerful processor so that the quality of pictures from all cameras is of excellent quality.
Usually shooting is carried out using wide-angle lenses with a diagonal of 140-160 degrees. The highest recording quality is considered to be SuperFull HD and Full HD. When buying a DVR, be sure to make sure of the appropriate video parameters specified in the instructions. Otherwise, with a lower quality of shooting, the picture on the screen will be blurry and not clear.
If a battery is included with a 4-camera DVR, this will undoubtedly be a plus. With it, shooting will continue even in the absence of power from the on-board network. This detail is very important, especially in the event of an accident.
The contents of the kit may vary depending on the model.
The shock sensor, also known as the G-Sensor, is a function that is triggered at the moment of an impact or collision and automatically saves all important videos to a special folder. With the help of records it will be possible to restore the history of the incident. In addition, you should pay attention to the functionality of the 4-camera DVR as a whole. As a rule, functions such as GPS navigation, Wi-Fi module, as well as the ability to save videos and photos in JPG format add advantages to the device when choosing.
When buying a car recorder, you should also pay attention to its appearance. Any abrasions, irregularities or inconsistencies with the declared standard should suggest the inadequate quality of the product.
Having decided to buy a four-camera car DVR, you need to understand which vehicle it will be used on. The device is suitable for ordinary small cars, as well as for public and special transport. Versatile and technically perfect, it has a set of advantages that a one- or two-chamber car recorder does not have.In order to choose the right device correctly, you need to understand the principle of its operation, make sure that the processor has sufficient power, check its performance upon purchase, and also make sure of the appropriate quality of the shooting by evaluating the video picture in terms of clarity. The selected four-camera DVR will be a good assistant in resolving controversial situations that arise on the road.
