Carrozzeria will release two new drive recorders. One is the “VREC-DZ800DC”, which has a new function that automatically detects and records the tilting operation from behind. The other is the “VREC-DH301D”, which is the successor model to the popular model “VREC-DH300D” released in May 2021.
The planned release month and actual price of each are around 34,000 yen for the VREC-DZ800DC in June 2022 and around 28,000 yen for the VREC-DH301D in July 2022 (both are tax-included prices). In this article, we will introduce the attractiveness and features of the two models, and for the VREC-DZ800DC, we were able to actually experience the detection function of the tilting driving by the actual driving test, so I would like to tell you about that as well.
First of all, from the VREC-DZ800DC, the major feature is that it is equipped with a “rear vehicle approach detection function” that detects tilting driving from behind and automatically records it. Even with a general front-rear two-camera drive recorder, the rear is constantly recorded in addition to the front, so even if there is damage such as tilting driving, evidence video is recorded. However, recent drive recorders improve the image quality of recorded video, and if it is a two-camera type, it records the video before and after, so the file size of the recorded video tends to be large. Furthermore, since the continuous recording mode of the drive recorder is basically a method of overwriting old recorded data when the capacity is insufficient, the evidence image of the shot tilting driving may also be overwritten. For example, when you are encountering troubles such as road rage, you may not be able to afford to pay attention to the capacity of the memory card of the drive recorder. In such a case, the function that firmly leaves evidence of road rage is the “rear vehicle approach detection function” newly developed by Pioneer.
The rear vehicle approach detection function notifies the driver with a screen display and sound when it detects a tilting drive from behind, and also records a total of 40 seconds of video for 20 seconds before and after the tilting driving detection, which is a different folder from the continuous recording. It will be saved automatically to .
Pioneer developed its own detection algorithm to develop this function. At the initial stage, he tried to apply a simple image recognition function, but he said that it was not possible to improve the detection accuracy by itself. At Pioneer, we decided to develop our own because we wanted to provide users with a sense of security that would allow them to take a good picture in the unlikely event of a road rage.
The goal in developing the algorithm was “how close to human senses”. Mr. Isao Nomura, Planning Section 3, Product Planning Department, Commercial Business Management Group, Pioneer Mobility Product Company, said, “When I thought,’This is awkward,’ I responded firmly and said,’If this is the case, while I’m agitated.’ It doesn’t respond when you say, “You can’t enter.” We have developed it so that it can be detected at a timing close to human senses. ”
For example, because the speed is different between general roads and highways, the detection is changed according to the driving speed. Also, since the degree of danger that people perceive differs between day and night, the algorithm’s detection method is changed depending on the brightness of the surroundings. Furthermore, the detection level can be set according to the driving skill of the driver. In addition, in order to prevent false detection, the function is operated at a speed of 40 km / h or more, and the car running in the adjacent lane is excluded from the detection target.
This time, I was able to experience the rear vehicle approach detection function in a test run on a closed and safe site. It is a situation in which a vehicle (Prius) approaches from behind while driving (Fit) at a speed of about 50 km / h.
Even when viewed from the outside, I felt that it was quite a short distance, but when I actually got on the front vehicle, the distance of the rear-view mirror and the rear-view vehicle that I could see when I turned around was quite close. At the moment when the vehicle approached from behind and felt that it was stuck to the back, the words “Caution for the rear!” Were displayed on the screen with a beeping sound.
The detection timing is exquisite, and it does not react at a distance of “a little closer” while approaching from the rear, and the rear-view vehicle is reflected large through the rear-view mirror, which makes you feel that you are driving further and you feel that you are driving in a tilted manner. I reacted the moment I got close enough to see the face of my hand. Also, this time it was about 50 km / h, but as mentioned above, it is said that it will react at a higher speed on the highway or at a farther distance in dark places such as at night. Also, I felt that I might not be able to calmly press the manual button on the drive recorder when I actually received this kind of tilting operation.
By the way, the VREC-DZ800DC also has a “sudden braking detection function” that automatically records and saves not only the rear side but also when the vehicle in front suddenly brakes or forcibly interrupts and the own vehicle suddenly brakes. Since it is installed , it will be more secure.