With the development of society, technology is more and more developed, and many products are constantly updated. Among them, "lock" is included. After thousands of years of development, lock technology has been continuously upgraded and applied in many fields. Door industry, automobile, hotel and so on, and the central locking is also a kind of fire at present, and its application is also very extensive.

　　What is a central locking?

　　The full name of central control lock is central control door lock, which is an automobile accessory. With this lock, you can open and lock the door remotely without inserting the key into the lock hole. It consists of a door lock switch, an actuator and a controller. At present, it is widely used in the automobile industry.

　　The hollow lock in the car refers to the switch on the driver’s seat door, which is a control setting that can control the door opening and closing of the whole car at the same time. Once it is started, people in the car can’t open the door unless the switch on the window is pulled up. The control device of this kind of lock has been assembled on all cars as early as 1970s, and it has been perfected and more convenient to use after several decades.

　　Function: to prevent passengers from misoperation when the car is driving and opening the door, leading to accidents.

　　Structure: door lock switch, door lock actuator, electromagnetic, DC motor, permanent magnet motor.

　　Main functions of central locking

　　Central control When the driver locks the door beside him, the other doors are locked at the same time. The driver can open each door at the same time through the door lock switch, or open a door alone.

　　Speed control When the driving speed reaches a certain level, each door can be locked by itself, so as to prevent the passenger from misoperating the door handle and causing the door to open.

　　Independent control in addition to the driver’s side of the door, but also in other doors set up a separate latch switch, can independently control the opening and locking of a door.

　　At present, the lock is a sign of safety. At present, the control ease of the lock is not the car lock, but the latest one belongs to the door lock. At present, the smart door lock market is very hot, and its products have many unlocking methods: fingerprint, swipe card, remote control, face recognition, etc., which are all very good products.