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This post was last edited by Hot Ximixiu on 2024-10-15 08:24
When starting the vehicle, you don't need to insert the key, just put the key in your bag or pocket. You can enter the car by pulling the door handle, and press the button inside the car to ignite the engine. This convenient "keyless" design has almost become a standard feature of new cars nowadays.
Composition of car keyless entry/start system
From the perspective of system functions, the car keyless entry/start system is divided into two parts, the keyless entry system and the keyless start system. For vehicles equipped with this system, the driver does not need to press the remote unlock button on the smart key or operate the mechanical key to open the door and start the engine. The driver only needs to carry the key with him and press the trigger button on the door handle or the one-touch start button.
The car's keyless entry/start system consists of a keyless entry/start controller ECU, start-stop switch, electronic steering column lock, door handle, trunk opening button, antenna, smart key, body control module, engine control module and other components.
The switch principle of the car keyless entry/ start system
Car keyless entry/ start system workflow
Keyless door unlocking
Keyless door locking
Keyless trunk opening
Advantages and disadvantages of car keyless entry/ start system
advantage:
1. When you get in the car and start the car, the first time you brake, the four doors will be locked automatically. When you are stuck in traffic or walking alone at night, you can prevent accidents such as bag grabbing and be absolutely safe.
2. When you enter the vehicle, the vehicle can identify the real owner. If the owner is not in the car, the vehicle will not be able to start and the alarm will be sounded immediately.
3. The complete password identification device (electronic key) encryption system cannot be copied. It uses the fourth-generation radio frequency identification technology (RFID) chip, which completely meets the requirement of being impossible to copy. The chip-type anti-theft devices and original car configuration chip anti-theft devices currently on the market are basically second-generation or third-generation chips, and have not completely solved the problem of being copied.
4. Vehicle anti-theft: By locking the circuit, oil circuit and starter, the vehicle cannot be started even if the anti-theft device is illegally removed.
5. No false alarms - the product adopts the most advanced anti-collision technology, which greatly enhances the reliability of the system.
6. The windows will automatically close after locking the car. When the owner gets out of the car, if he forgets to close the windows, there is no need to restart the engine to close the windows. The vehicle safety system will automatically raise the windows, which greatly improves the safety level of the car. Accidents such as forgetting to close the windows and getting caught in the rain will not occur. The smart key system allows you to not worry about forgetting to lock the door every time you leave the vehicle.
insufficient
1. Forgot to take the bag where you keep your keys. For example, you always keep your keys in your bag, and when you walk to the car, you find that you can’t unlock it. It turns out that you forgot to take the bag where you keep your keys.
2. When driving, if the car keys are placed in someone else's bag or pocket, and you get off the car halfway, you dare not turn off the car and must get the car keys back.
4. There are some signal jammers on the market that can interfere with the communication signal between the key and the car. Therefore, once a thief has set his sights on you, he can use the jamming device to appear near you and interfere with the key signal, making it impossible for you to lock the car. Therefore, it is best to make further confirmation after locking the car.
5. Two years ago, in 2015, the U.S. Federal Court in Los Angeles received a class action lawsuit filed by consumers against the world's top 10 automakers (including BMW, MINI, Mercedes-Benz, Fiat Chrysler, Ford, GM, Honda, etc.), claiming that "these automakers concealed the risk of toxic carbon monoxide gas in more than 5 million vehicles equipped with keyless start systems" and "deliberately ignored" the risk of defective technology, resulting in the death of consumers.
According to the lawsuit filed by consumers in the Los Angeles State Court, when the owner presses the keyless start-stop button to turn off the car, the engine may not be turned off, and the owner may not notice and leave directly. This situation often happens when the owner parks the car in his garage. As a result, the car will be in a long-term idling state, resulting in incomplete combustion of the fuel in the tank to produce carbon monoxide. Carbon monoxide enters the house connected to the garage, causing casualties inside.
The significance of keyless entry/start technology in cars
Any invention of automobile technology has its own value, and the keyless start system is no exception. In addition to being convenient, it is also helpful for vehicle anti-theft and safety. In addition, keyless start can effectively protect the engine. For some novices, using the key to ignite the engine, the engine has already started but the key has not been released or the key is continued to be turned, which will cause great damage to the engine; in addition, some vehicles are very quiet when they are on fire. If the owner forgets that the engine has been started and turns the key again, it will also cause damage to the engine. However, with keyless start, this situation can be avoided.
The development of automobile technology is changing with each passing day, and the application of various new technologies is also for more convenience and humanization, and keyless start is no exception. Although this technology is not perfect, its improvement in convenience and safety is obvious. In general, the advantages outweigh the disadvantages, which may be the significance of keyless start.
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