Five must-see conditions for the purchase of on-board hard disk recorders-1, power supply, 2, highly integrated miniaturization, 3, shockproof, 4, driving information recording function, 5. to achieve value-added media playback function.
????The emergence of on-board hard disk video recorders solved the confusion of relevant departments. The on-board digital hard disk recorder is a special embedded digital hard disk recorder installed on a mobile vehicle and integrating digital recording, monitoring, entertainment, advertising and other functions. It must meet the following conditions: can use on-board power supply, miniaturization, shockproof, can record driving information and can realize value-added. Here is a brief explanation of the above necessary conditions:
1, power supply
Vehicle DVR has been working in the environment where the vehicle is driving, so it must be shockproof, dustproof and moisture proof. At the same time, the equipment has a wide range of adaptability to the input voltage, because during the driving of the vehicle, there will be braking, climbing, ignition and aging of the vehicle's electrical equipment, which will cause the output voltage of the vehicle to fluctuate with different amplitudes. It must have a wide voltage input capability to adapt to voltage changes, anti-electromagnetic compatibility design, at the same time, the process needs to be shock-proof and dust-proof.
2. Highly integrated miniaturization
Vehicle DVR is not simply to record images, it must have rich functions to meet the requirements of modern vehicle monitoring, and can respond to various situations. The length and width of general embedded digital hard disk video recorders are almost 400mm. Due to the limited space on the vehicle, the chassis is too large to install, such as under the seat, so the miniaturization of the machine has become a requirement that must be met. If it is installed under the seat, it is generally required that the length and width should not exceed 300 × 200mm.
Due to the different vehicle and road conditions, shockproof, especially the hard disk shockproof treatment has become the most basic requirements for car digital hard disk recorders. The most susceptible component in the car digital hard disk recorder is the hard disk, so we must solve the problem of car shock absorption. We adopt a patented shockproof structure with a dual shockproof design of hard disk suspension shock and chassis suspension shock. Unlike the structure on the market that uses springs and rubber pads as shockproof materials, although it can play a certain shockproof role in the vertical force direction, in fact, the vibration direction is not under driving conditions, especially under harsh road conditions. Regularly, long-term use will inevitably lead to equipment failure.
4. Driving information recording function
Driving information recording function is divided into two parts. First, the driving audio and video information recording function. Second, the information recording function of driving speed, steering, braking and so on. Among them, the driving audio and video information recording function can be satisfied by the general on-board digital hard disk recording. The black box function for recording the information transmitted by the sensor such as the speed of the vehicle is the function of the more advanced on-board digital hard disk recorder at this stage, which can be accurate Record the driving status of the car, such as: left turn, right turn, brake, reverse, vehicle speed and other information of the vehicle driving, and the stored information can be output through the standard interface. Through system analysis software, it is possible to effectively manage and dispatch vehicles reasonably, improve driving safety, and reduce vehicle violations.
5. Realize value-added media playback
Vehicle digital hard disk video recorder can provide new value-added services, such as whether it can compile, insert commercials, entertainment programs, etc., while achieving the recording function of audio and video information. This is another new requirement that customers put forward for car digital hard disk recorders, and it has also become another standard for whether the car digital hard disk recorder products are advanced.