What is the principle of one-touch start for electric bikes?
One-touch start function, the first is applied in the car key to improve the start function. In the product appearance design of electric bicycle technology is also progressing today, the function configuration is also endless, this function has now become the standard for high-end electric vehicles. But while giving the user convenience, a key start is safe?
After the owner presses the button on the key, the transmitter inside the key sends out an electric wave, which contains a string of special signals. The vehicle antenna receives the electric wave signal from the key, and after the electronic controller identifies it, the whole car circuit is connected to complete the one-touch start.
If someone with a radio receiving device, while you press the remote control to record this string of information, then the electric car will not be easily stolen? There is indeed such a possibility. Most of the remote keys in the beginning were fixed-code authentication methods. That is, both the remote control key and the vehicle controller have the same key to authenticate each other.
However, due to the small amount of codes in this way, it is easy to have duplicate codes. There was a case that one key could open two vehicles at the same time, so in terms of security, although it is higher than mechanical keys, there will still be no small security holes.
So the clever product structure designer invented the jump code type verification method, and the principle is also very simple. In addition to the key identity verification code, there is an extra layer of code skipping part, in which the code skipping part will change according to a certain coding function after every signal is fired, which is equivalent to changing a "new key".
Even if we press the remote key unintentionally, the key value sent by the remote key may exceed the range saved by the vehicle. When the owner presses the unlock button, the vehicle will not unlock immediately because it cannot recognize the signal that exceeds its authentication range.
At this point, the owner usually thinks that the key is not remotely controlled or has lost power, and presses the unlock button again. In fact, the key value in the second time signal from the key and the last time key value exactly meet the second verification conditions, so the vehicle can be unlocked normally. At the same time, the vehicle will also update the key value for the next unlocking.
This kind of anti-theft technology is much safer than your own security door, but you should keep it well, don't lose it. With a remote key like this, but will be very expensive yo.