The car DVR has the function of capturing video while the car is moving or parked. This is mainly done in order not to miss unique moments or present a video moment as evidence of innocence in a car accident. This article explains how the car DVR works.
And before considering the principle of its operation, you should familiarize yourself with its functions and varieties.
Purpose
Automotive devices are developing and improving at a rapid pace, therefore, in addition to fixing traffic events, the recorder can be used for other purposes:
- CCTV camera for visitors in a store or restaurant.
- Checking the car in the parking lot.
- Monitoring the movement of vehicles on the territory of organizations.
- Easy shooting everydaylife.
The demand for DVRs is increasing more and more. This is not even due to direct advertising of these devices, but due to videos on the network with unique fragments shot on a car camera.
Varieties
All car DVRs can be divided into several types, depending on how the car DVR works and its structure:
- Portable devices.
- Devices with multiple channels.
- Other gadgets that act as a car recorder.
Let's consider the first kind. It is the simplest and most versatile device that is most often used by drivers. The device is a camera with one or two lenses, which are used to shoot. These DVRs are relatively cheap and easy to operate.
"Multichannel" DVR means it has multiple camera outputs. In this way, you can install a DVR with a rear view camera and a navigator, as well as a camera with road shooting.
Of the minuses, only the price of such a device can be distinguished: it is quite high.
Smartphones or tablets can also act as a car DVR. You just need to come up with a mount so that the device remains stationary and does not interfere with the driver in the cabin.
Actually, this way of capturing motionhas many advantages: access to WiFi and GPS, high video quality, easy control, etc. The main advantage is that there is no need to buy additional equipment; all you have to do is download certain software and use it.
Photography Permit
It would seem that there is nothing wrong with a car DVR recording footage of movement, but in some countries this is prohibited. This type of shooting is considered hidden, therefore it violates the rights of other citizens. Countries that cannot use registrars include Austria, Belgium and Portugal.
In Russia, the use of registrars is not prohibited, but rather recommended. In the event of a car accident, you can show a record at the time of the accident and thereby determine the culprit.
Working principle
How does a car DVR work? Consider the main components of this device:
- Camera. This element takes pictures and transmits a signal for further processing of information.
- Control unit. This is where the information from the video camera comes in, and all the necessary operations with the video are performed: editing, overlaying the date and time, etc.
- Storage media (external or integrated memory card). After processing, the video is placed in the memory of the DVR and remains there until the user transfers or deletes the files.
This is how the full video processing is done. However, it may seem that this is a standard setelements that any other camera has. But there are some features of how the car DVR works that make it different from regular cameras:
- Shooting takes place in shaky conditions, especially if the road is rough. The car recorder has a kind of stabilizer that allows you to make the video as comfortable as possible for viewing.
- Also, the registrar on the car has a property that makes it possible to shoot video in the dark. Ordinary cameras do not have this ability.
- The DVR also protects files from being overwritten so you don't lose important footage.
- The viewing angle on automotive devices is much larger than on simple video cameras. It can vary from 80 to 130 degrees. Such indicators are present in order to capture the largest possible space while driving or parking.
Camera mode
It is also worth considering the mode of operation of car DVRs. The devices have sensors that allow you to start or end shooting automatically. So, during the start of the car, the registrar starts shooting. Accordingly, stopping the machine ends the video recording. You can set the device to record video when objects move while the car is parked. All settings are selected by the user.
As you can see, the principle of operation of the DVR is quite simple, and any driver can handle the setup.
Key Features
Now consider the properties of automobileappliances to look out for when buying:
- Permission.
- Frame rate.
- Viewing angle.
- Sensitivity.
How does the car DVR work with different specifications? Let's get acquainted with the first quality - resolution. It represents the number of pixels contained in a unit area of the screen. That is, the larger the screen resolution, the clearer the image will be when recording, which means that you can see the fine details captured during shooting.
Frame rate is the number of frames that changes every second. Measured in frames per second or FPS. Thus, the higher the frame rate, the smoother the picture will change when recording a video.
Viewing angle, as already mentioned, characterizes the vastness that the camera can capture. The larger the angle, the more space the device will record.
DVR sensitivity refers to the degree of light, namely, the higher the sensitivity, the less light is needed to record video clearly. That is, for night shooting, you need to choose a device with a high sensitivity indicator.
Rating of the best DVRs
Among the best models are the following:
- Xiaomi Yi WiFi DVR. This DVR stands out with one of the largest shooting angles - 137 degrees. It also has a WiFi module, which allows you to control the device from another device.
- Video recorder Artway AV-390. This model has a high quality of shooting, andalso a user-friendly interface, so everyone can figure out the settings.
- SJCAM SJ4000 Wi-Fi and Sho-Me A7-GPS dash cams feature convenient mounting and low prices
It is worth noting that manufacturers often equip their devices with many unnecessary features, which make control very difficult. Before buying, you need to decide what qualities will be useful when shooting, and then select a DVR.
Conclusion
This article addressed the question "How does a car DVR work?". Having studied all the features and characteristics, it will not be difficult to choose the right device. It will definitely come in handy on long trips, if only to record the entire trip.
