Signal lamp manufacturers analyze the development history of industrial equipment signal lights

Signal lamp manufacturers analyze the development history of industrial equipment signal lights

In the early 19th century, in York City in central England, red and green clothing represented different identities of women. Among them, the woman in red dress said that I was married, while the woman in green dress was unmarried. Later, in the front of the London Parliament Building, there was a frequent accident of the carriage rolling, so people were inspired by the red and green. On December 10, 1868, the first member of the signal light family was born in the square of the London Parliament. The lamppost designed and manufactured by the British mechanic De Hart is 7 meters high. There is a red and green lantern on the body - the gas traffic signal light, which is the first signal light on the city street. At the foot of the lamp, a policeman with a long pole can pull the belt to change the color of the lantern as he pleases.

Signal lights, traffic lights were invented by African-American Garrett Morgan in 1923. Previously, rail traffic had been using auto-converted lighting signals for some time. However, since the train is operated in a single train according to a fixed schedule, and the train is not very easy to stop, the signal used on the railway has only one command: pass. The traffic lights on road traffic are different. Its duty is to tell the car driver to stop the car.

James, a psychologist at the University of Hawaii, points out that people have a tendency to connect brakes and throttle with self-esteem. He said: When the driver saw the yellow light, his heart was secretly ready to accelerate. If the red light is on at this time, there will be a feeling of disappointment. He called the intersection "the psychological power zone." If his theory is true, this area should belong to the category of supere go rather than instinct (id) in Freudian psychology theory.