What's the blind spot monitoring mean

How the upgraded BSM blind spot monitoring system actually works

First of all, before introducing the BSM blind spot monitoring system, let’s first explain the concept of the so-called blind spot. The blind spot is an area where the driver cannot see directly into the exterior of the vehicle due to the obstruction of the vehicle structure; this area varies according to the size and shape of the vehicle. This area varies depending on the size and shape of the vehicle. The presence of a blind spot can easily affect the driver’s judgement and lead to operational errors, which can result in traffic accidents. The blind spot is considered to be the biggest obstacle to the driver’s access to road information.

blind spot monitoring system

It is easy to see from the above diagram how many blind spots exist in a car. Of these, the ones that have the greatest impact on driving are the blind spots on the sides and rear

Advantages and disadvantages of the blind spot monitoring system

The problem of blind spots has existed since the beginning of the car. However, in the early days of the automobile, people were not even aware of the problem of blind spots because they had not yet developed the basic awareness of safe driving. But in 1906, Dorothy Levitt, a beautiful 24-year-old British racing driver, with her feminine sensitivity, realized that being in a car made it impossible to see what was going on, making it dangerous for pedestrians and drivers alike. In her book ‘The woman and the car’ she first suggested the idea of women drivers wearing hand mirrors to see behind them, an idea that could be considered the first attempt in the history of the automobile to solve the problem of blind spots, and which gave rise to the idea of the rear-view mirror.

It was Dorothy Levitt who pioneered the idea of the rear-view mirror.

Despite this idea, the beautiful racing car driver was unfortunately only a talker and did not put this great idea into action. It was not until 1921 that the rear-view mirror was patented by an inventor called Elmer Berger, who named it the “COP-SPOTTER” and started mass production in his company, that the rear-view mirror was born. With the creation of the rear view mirror, it became the simplest and most viable solution to the problem of blind spots on the sides and rear of the vehicle.

blind spot monitoring system

Although mirrors are now fitted on all commercially available vehicles, there are still blind spots in the mirrors that do not provide complete coverage of the road behind you. Typically, there is a sector on the outside of the vehicle’s rear door area where there may be a blind spot in the field of vision, making it almost impossible for the driver to observe each other in time when a vehicle or pedestrian approaches within a certain range. For our left-hand drive models, the blind spot is larger on the right-hand side of the body than on the left, and the blind spot is relatively larger. If a vehicle or pedestrian approaches in the blind spot, then making a lane change or steering maneuver at that point could lead to an accident. Even though some models are equipped with dual curved surfaces and large field of view lenses, they still do not completely eliminate the blind spot. So is there any effective solution to the problem of blind spots in vehicles?

After all, technology is constantly evolving and what can’t be solved by traditional mirrors, can be solved by other means. With the development and application of millimeter wave radar technology in recent years, there is a proven technical basis for solving the centuries-old problem of blind spots, and the BSM (Blind Spot Monitoring) system was born.

The main function of BSM is to detect objects on either side of the vehicle using radar set up at the rear of the vehicle, whether they are motor vehicles, motorbikes or bicycles.

The BSM blind spot monitoring system on the 2021 MAZDA CX-4, for example, will automatically activate when the vehicle is traveling at a speed greater than 15KM/H. The BSM blind spot monitoring system will automatically activate when the vehicle is traveling at a speed greater than 15KM/H. Through the radar sensors installed on both sides of the car’s rear bumper, it will simultaneously send out microwave signals to the left and right 3m and the rear 50m, and by analyzing and processing the reflected microwave signals, the distance, speed, and direction of movement of the vehicles on the left and right sides and the rear can be known.

blind spot monitoring system

When a vehicle enters the CX-4’s blind spot, a yellow indicator in the CX-4’s rear view mirror flashes to warn the driver that a vehicle is in the blind spot. If the driver does not notice the flashing light at the moment, and at the same time turns his or her turn signal to make a lane change, the BSM blind spot monitoring system will alert the driver to the presence of a vehicle in the blind spot again by means of a buzzer, providing a double safety measure to maximize driving safety.

Of course, in addition to being useful when changing lanes, the BSM system is also useful in bad weather such as heavy rain or fog, or at night when the vision of the car behind is disturbed by distant light, when the radar waves are much more reliable than the human eye, after all, the system will not strike.

The 2021 MAZDA CX-4 is now equipped with a comprehensive upgrade of the intelligent safety features, which is a very practical feature that is basically standard and protects the user’s car life in all aspects. If you want to know more about the 2021 MAZDA CX-4, or if you want to know more about the BSM blind spot monitoring system, you can share and discuss in the comments section.

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