We experienced that the door opening and closing didn’t work in spite of user’s operation. We have developed the best solutions for an appropriate operation of an elevator door. We adopted a camera as a door sensor. It is called a door sensor in the following. A door sensor might be to catch a broader area surrounding an elevator door. It should be to judge whether people at the elevator hall passing away or riding on a car or not. We have made up a best algorithm for this operation and verified the effect. This is introduced in this paper.
