16 active full configurations make your driving more secure

When choosing a car, appearance, space, power, etc. will have different answers according to different people's different needs. But when it comes to safety, I believe everyone will have the same position. Safe driving is always the most important point in our journey. The safety of the car itself is also the goal pursued by car companies.

On-board safety systems can be divided into two categories. One is the active safety system and the other is the passive safety system. Active safety is to control the braking or steering system to prevent accidents when the accident is about to happen. Passive safety is to protect the safety of people outside the vehicle after the accident and minimize the losses. With the protection of these two major security systems, traffic safety can be guaranteed.

● Why do you need a security system?

In fact, when cars were just invented, they didn’t need so many complex safety systems. Those cars were running slower than people. People with longer reflex arcs couldn’t expect to get an annoyance. So no one at the time needed to consider its security issues. However, with the development of the automobile industry, the speed of automobiles has become faster and faster. As a result, safety accidents have begun to appear. As a result, the safety of automobiles has also become a concern of all parties. As car interior protection becomes more advanced, it has begun to have Passive safety design for 3H body, seat belts, airbags, safety head restraints, etc. However, people later realized that active safety was proposed because it was the highest level of security when it took the initiative to attack accidents. This also benefited from the development of electronic technology. The big walking machine finally started to have its own IQ, and used computer control to replace, remedy, or correct some deficiencies or mistakes in manpower control. It was used to prevent certain situations. An accident occurred.

So today we talk about active security systems. With the development of technology, active security configuration is increasingly rich and smart under the guidance of demand, and it also makes our driving more secure. So what are the more common active security configurations now?

● Active driving safety system

One: ABS+EBD

ABS is a driving safety system that we are very familiar with, and all cars sold in the market must have mandatory safety configurations. The brake force distribution system (EBD) is a supplement to the ABS system. It calculates the four-wheel slip ratio due to different adhesion according to the conditions of the road surface and the weight of the vehicle body, and automatically adjusts the braking force to obtain a balanced and ideal braking force. Distribution ensures the smoothness of the car. ABS prevents the wheels from slipping and causing slippage during emergency braking, especially in wet and slippery roads, and the sudden brake will lose adhesion due to road surface adhesion, causing the vehicle to lose control. Since the braking effect is best when the wheel and the ground are just slipping but not locked, ABS uses the speed sensor, ECU, solenoid valve and other components to automatically control the braking force and uses the sensor to receive the locking signal. After being processed by the ECU, the hydraulic pressure of the wheel brake cylinder is reduced through the instruction, the braking force is reduced, and then the oil pressure is restored at an appropriate time, and the circulation is continued, so that the braking effect is exerted to the best and the slip ratio is guaranteed to be controllable The range allows the car to have the maximum adhesion, thereby improving the directional control and stability of the car when braking.

II: Driving anti-skid system (TCS/ASR)

Similar to ABS, TCS also controls the vehicle slip rate, but TCS is a system that ensures directional stability and maneuverability when starting and accelerating. At the start of the car, due to restrictions on the adhesion of tires and road surfaces such as slippery ground, a large torque output will cause the drive wheels to slip, making the vehicle unable to start very well. The TCS controls the drive wheels. It controls both the brakes and the engine output. When the car suddenly accelerates causing the drive wheel to slip, the TCS will immediately work, giving the braking drive wheel a braking force through the brake system, and at the same time reducing the engine power output to stop the wheel from slipping.

III: Emergency Brake Assist System (EBA)

In general, our brakes will lightly press the brake pedal in advance to slow down the speed according to the pre-judgment, and then increase or decrease the braking force according to the actual situation. If emergency braking is required in case of emergency, even if the driver slams down the brake, it may not achieve the desired braking effect. This may result in an accident due to excessive braking time. The EBA analyzes the driver's braking intent by the driver's speed on the brake pedal. When the EBA senses that the driver's braking pressure on the brake pedal is too alarming, the EBA will quickly give the driver a brake within a few milliseconds.

Four: Uphill Assist System (HAC)

V: Body Electronic Stability System (ESP)

The above six major electronic stability systems can monitor the status of the vehicle in real time and actively take intelligent interventions so that drivers can easily cope with unexpected road conditions.

● Lane departure warning

2 Pre-collision warning/blind area monitoring/tire pressure monitoring

● Pre-crash warning

● Blind spot monitoring

● Tire pressure monitoring system

Tire pressure monitoring has direct monitoring and indirect monitoring. The direct tire pressure monitoring device uses a pressure sensor installed in each tire to directly measure the tire air pressure, and uses a wireless transmitter to send pressure information from the tire to the system on the central receiver module, and then to each tire pressure data. Display it. When the tire pressure is too low or leaks, the system will automatically alarm.

The working principle of indirect tire pressure monitoring is that when the air pressure of a tire decreases, the weight of the vehicle will make the rolling radius of the wheel smaller, resulting in faster rotation speed than other wheels. By comparing the difference in speed between the tires to achieve the purpose of monitoring the tire pressure. Indirect tire warning systems actually rely on the calculation of tire roll radius to monitor air pressure. The comparison also shows that indirect tire pressure monitoring does not have a high accuracy of direct tire pressure monitoring.

● Reverse image

● Seat belt is not prompted

● Emergency brake automatically double flash

● Rainfall sensing

● Anti-glare rearview mirror

● Daytime running lights

The above lists are some of the more common and practical active security configurations. The use of these security configurations is not only good for individuals but also for urban transportation. Reducing road traffic accidents is very important for solving urban traffic congestion. Means, so many car companies first for the safety of consumers, the second is to take up social responsibility, the active safety configuration of the car to explore more models, making some active safety configuration is no longer a luxury car exclusive, so that more consumers Can be used to. Most A-class vehicles are already equipped with some practical and active safety configurations, with a price of around 15W. In some models, they may have a vehicle with relatively perfect active safety configuration.

In several representative A-class vehicles of around 150,000, almost all of the commonly used security configurations are compared. In contrast, the Citroen C4L configuration is relatively complete in its class.

● Summary:

When the driver is driving, he has made mistakes and is on the verge of danger. At this time, active safety configuration is the most dependable driver of the driver. I didn't introduce more security systems here because I think that many active security configurations that sound good are not all suitable for China's traffic conditions. In my opinion, safe driving in the current road conditions still requires human operation to ensure that active safety can give the driver more assistance and promptness in dangerous situations rather than replace the driver. Do more to disrupt the driver's driving rhythm. As for autopilot, I don't know how much change and effort the technology will have to undergo. So, juvenile, keep gripping your steering wheel and continue driving towards your initial dream.

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