The door is the symbol of the separation of internal and external space. It is the first pass and throat of MaiRen's room. Therefore, each family is called "the door". People have always attached great importance to the treatment of various kinds of doors. Food is the most important thing for the people, and residence is for safety. The elements of living cannot be without doors. Confucius' Analects Yongye said: "who can not get out of the gate?" Although the truth is very simple, it contains rich connotations. The door and human beings live together.

The door of primitive society

In primitive society, human beings built nests in the early days of their birth. Some stones and tree trunks were placed at the entrance of the cave to form a barrier for the living environment. Although it was for shelter from the wind and rain and the invasion of wild animals, it was also the door of primitive human beings.

The rudimentary form of the door of human beings in the early stage of civilization

With the evolution of human learning ability, subtle changes have taken place in the human living environment, from the early cave to the straw hut, and then to the earth house, the material or shape of the door of the house has also changed.

Family house in feudal society

From the slave society to the feudal society, people have formed family style houses, and the sense of etiquette and rules between people is becoming stronger and stronger, and the culture of the door has gradually formed.

The stone door of modern society

In modern society, people gradually changed from single family houses to low-rise collective houses, with harmonious neighborhoods and doors made of wood and stone bricks.

The iron gate of contemporary society

In modern society, there are high-rise residential buildings everywhere, and every household has used iron security doors.

With the rise of the Internet of things era, a variety of intelligent sensor doors are gradually entering people's lives, and are widely used in high-end hotels, clubs, banks and other service industries.

Automatic induction revolving door of Lexus 4S store

Automatic induction revolving door of Shangri La Hotel

Automatic sensing translation door of Bank of China

Automatic sensing door of human body

The intelligent sensor door is usually installed on the door head of the intelligent human body infrared sensor device to sense the people near the door. When the person reaches a certain distance from the door, it will be detected by the intelligent human body infrared sensor inside the device, and then the intelligent infrared sensor will amplify the signal through the built-in amplification circuit, and then output the electrical signal to control the door On and off of