Blind spot is not blind
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When the driver quickly looked at the endoscope and the exterior mirror and could quickly look back and then prepare to overtake, suddenly heard a loud warning from the left. It is easy for a driver to miss a vehicle that is approaching quickly from behind in a super-vehicle or a blind spot area alongside its car, especially in heavy traffic on multi-lane highways or main highways, as well as in urban traffic. The Blind Spot Detection System (BSD) can relieve most of its stress and avoid dangerous situations by monitoring areas that are difficult for the driver to see. If the lane change assist system indicates that there is no suitable overtaking distance, the driver's attention will be drawn to the front - because you will never know if the vehicle in front has been accidentally braked.
Basic technology
A radar sensor (such as RFbeam's K-LC2) or camera is responsible for monitoring the road space behind and to the side of the vehicle and displaying a visual signal on the exterior mirror to indicate if there is a moving car in the blind spot area. Some models also provide an additional tactile warning, ie, vibrating their seat, when the driver wants to change lanes (by turning the turn signal) regardless of the presence of the vehicle in the blind spot area. Although the design scheme used by each car manufacturer to warn the driver is different, an indicator near the exterior mirror is a must.
Advantages and Disadvantages of Blind Spot Monitoring System
When learning a driver's license, the coach will tell you that you need to look back when you change lanes because the side mirrors have blind spots and do not completely cover the rear road conditions. And when you rush to see objects that you don't have time to see, it is the "work responsibilities" of the blind spot detection system. The system senses the vehicle present in the blind spot area behind the vehicle and warns the driver when the driver turns on the turn signal. There will be a small light flashing at the side view to indicate a warning, in addition to steering wheel vibration or an audible warning. If the driver does not turn on the turn signal, the warning light will remain on after the vehicle is detected, and will not flash.
The blind spot monitoring system is a key function in the driver assistance system, covering 360° road conditions around the body at low speeds. The active safety loop detection system also includes adaptive cruise control, lane departure warning, parking sonar and the like. Some driver assistance systems make driving safer, especially during long driving times.
Blind spot monitoring, lane departure warning and parking sonar
Blind spot monitoring, lane departure warning and parking sonar, these three technologies will fully protect the vehicle from side and rear collisions.
Volvo Cars has developed the first generation of blind spot monitoring system BSD 10 years ago. Blind spot monitoring works based on ultrasonic or radar sensors on the side and rear of the vehicle. The system monitors the rear and rear side of the vehicle. The blind spot monitoring system will not activate when there is no vehicle behind the adjacent lane. The system is not responsible for detecting if the vehicle deviates from the original lane.
The so-called blind spot is the rear view that is blocked by the B-pillar of the vehicle. When the system detects a hazard, the yellow warning light on the inside of the side mirror or A-pillar will begin to flash.
Different car companies have different titles for the system, which are mainly divided into blind spot monitoring, blind spot monitoring, and blind spot information systems, but they are all the same system. The former two are used more frequently, and only Ford, Volvo, and Lincoln have made such systems a blind spot information system. Audi calls it Side Assist. Some car companies call it active blind spot detection. Correspondingly, active blind spot detection has passive blind spot detection, and the latter's detection capability is not as good as the former. Some passive systems can only be detected after the rear car exceeds the bumper of the car. Simply speaking, the rear car is already on the side of the car, while others can detect the condition of the rear 3-5 bodies.
In addition to being used in automobiles, blind spot detection systems are also used in commercial vehicles such as trucks and trailers, and even on motorcycles and bicycles.
The lane departure warning is responsible for detecting whether the vehicle is maintaining the current lane. The front information is collected using a front-view camera mounted behind the windshield. When the owner changes lanes, the driver will receive a visual warning on the dashboard display.
The parking sonar is mounted behind or in front of the vehicle using ultrasonic or electromagnetic sensors to detect the distance between the vehicle and the obstacle. Sometimes, some sensors are used for blind spot monitoring and reverse side warning systems.
What can blind spot detection do?
When the user dumps the car out of the parking space, the system will detect if there is a vehicle passing behind and alert the driver.
The system's side sensors will help the owner find parking spaces for parallel parking. The sensor also acts on the automatic parking system. Pressing the center console button will automatically enter the vehicle. When trying to stop the vehicle on the side of the road, the sensor will automatically measure the distance between the two stopped vehicles. If it is detected that the distance between the two vehicles exceeds the length of the vehicle body by 3-5 feet, the system determines here. There is a parking space and the system then instructs the driver to drive into the parking space.
Rear and side sensors can also be used for the rear parking sensor. Not all rear sensors are used for blind spot detection systems. If the vehicle has rear parking assistance, then there is no need to equip the blind spot detection system.
Some cars are equipped with a signal indicator at the dashboard that remains lit when the blind spot monitoring system is idle. Some industry people believe that the indicator light is redundant. However, considering another factor: some safety assistance systems, especially the stability control system, although the driver may not observe these indicators during driving, the user needs to know the on/off status of the relevant system when necessary.
The blind spot detection system is also not 100% reliable, and sometimes it gives a false alarm, especially when the vehicle traverses, the system mistakes the tunnel wall for its vehicle.
Honda has developed a unique blind spot detection system that requires drivers to make judgments. In the Honda Accord model, the Lane Watch system is a camera system mounted behind the vehicle that works on the rearview mirror of the vehicle. When the right turn signal is turned on, the image appears in the center console display, and there are three horizontal lines in the image. If the image is between the midline and the close line, there is no need to change lanes. If the image is between the midline and the far line, you need to make a judgment on whether to change lanes.
The above are the brands and models that have been configured with BSD. It can be seen that these are basically luxury models. However, we believe that with the introduction of the 24Ghz automotive radar channel and the introduction of some low-cost radar sensor modules and solutions in 2013, more and more vehicles will be installed in the future to protect us. Security.
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