How to judge whether the elevator is in the upward or downward state?

This needs to distinguish between two situations. Is the elevator above the fifth floor or below the fifth floor? Did you press the up command button or the down command button when you were separated from the people on the fifth floor?

If the elevator is below the fifth floor, the people on the fifth floor and you both press the down command button at the same time, the elevator will pick you up first, and then pick him up when the elevator goes down. This is the remote direction control in elevator control, in order to better serve all passengers and avoid long waiting time for remote passengers. Above the fifth floor, I'll pick you up first, then pick you up.

If the elevator is below the fifth floor, and the people on the fifth floor and you both press the go command button at the same time, the elevator will come to him first and then pick you up.

There are differences in the priority of in-vehicle instructions, such as the same direction instruction, the reverse direction instruction and the far direction instruction. When there are passengers going up in the elevator, the instruction in the car is higher than other instructions, and the elevator will respond to the same direction instruction of the nearest floor according to whether it is fully loaded or not. When the elevator goes up with no load, the command priority, remote command >; Same direction instruction >: reverse direction instruction.