How do you determine if the MDVR device is stable?

There are 3 key points which you need to consider to choose the products.

1)Damping

Due to differences in vehicle and road conditions, shock-absorbing technology has become the most basic requirement for in car DVRs, which includes multiple aspects such as shock absorption for the entire vehicle, hard drive rack, and hard drive to achieve shock absorption treatment for the entire in car DVR.

In these damping processes, the damping of the hard drive is of utmost importance. This is because the most easily damaged component in car mounted DVRs is the hard drive. Once the hard drive is damaged, it cannot store the situation inside the car. Therefore, the shock absorption problem of the hard drive is particularly important.

For the current methods of shock absorption, most structures on the market use springs and rubber pads as shock-absorbing materials. Although they can play a certain role in the vertical force direction, in reality, the vibration direction is irregular in driving conditions (especially in harsh road conditions), and long-term use will inevitably lead to equipment failure. Springs and rubber pads do not actually absorb the energy of vibration, but instead store this energy, causing greater rebound when it reaches a certain level. At present, there is a method of using a rubber pad with an oil filling bag, which mainly utilizes the advantage of less compression of oil than air, in order to achieve better shock absorption effect.

2)Stabilized power supply

In addition to shock absorption, another important technology in car mounted DVR is the stability of the power supply. Due to the actions of braking, climbing, and ignition during vehicle operation, the output voltage of the vehicle will fluctuate to different degrees, which can easily cause damage to the onboard equipment. Therefore, the onboard DVR itself must have a wide voltage input capability to adapt to this voltage change.

Taking a bus as an example, its standard power supply is 12V, but this voltage may increase or decrease by several V (volts) depending on different situations. Therefore, it is important for onboard equipment to be able to adapt to voltage changes on the bus at any time.

So, how can we better adapt to this voltage change? Considering the complexity of electricity consumption in current vehicle mounted DVR environments, a wide voltage range of 6-36V is usually used to meet the needs of mobile transportation vehicles. In terms of power management, voltage fluctuations and electromagnetic interference during vehicle start-up and driving processes are fully considered to ensure reliable and stable system operation. Of course, adding an external power module to a car mounted DVR is also a good approach.

It is worth mentioning that if the vehicle suddenly experiences a collision, it may cause the power supply on the vehicle to be cut off. At this time, the onboard DVR should be able to achieve automatic power protection function, and its design should also facilitate the extraction of hard drives to ensure that data inside the hard drives is not lost.

3)Heat dissipation

It is understood that during the operation of buses, there will be significant temperature differences. Many buses install in car DVRs under the driver's seat or in a closed space on the top of the driver's seat, which puts higher requirements on the performance of in car DVRs.

At present, most manufacturers use high-density aluminum casings with heat dissipation effects to better facilitate rapid heat dissipation of car mounted DVRs. The car mounted DVR designed with an aluminum casing can withstand temperatures up to 60 degrees Celsius