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Air-tight door system and air-tight door control method

  • US 10,407,969 B2
  • Filed: 07/27/2015
  • Issued: 09/10/2019
  • Est. Priority Date: 08/01/2014
  • Status: Active Grant
First Claim
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1. An air-tight door system, comprising:

  • a first door, a second door, a first door detection module, a second door detection module, a controller, and a passage between the first door and the second door, wherein when the first door and the second door are closed, the passage is air-tight;

    wherein the controller is configured to;

    open the first door and configure the second door to prohibit opening when the first door detection module detects that there is a transportation vehicle waiting to enter the passage through the first door;

    close the first door and configure the first door to prohibit opening when the first door detection module detects that the transportation vehicle passes through the first door completely;

    unlock the second door and open the second door when the second door detection module detects that the transportation vehicle will depart the passage through the second door, and the first door detection module detects that the first door is completely closed;

    close the second door when the second door detection module detects that the transportation vehicle passes through the second door completely;

    unlock the first door when the second door detection module detects that the second door is completely closed;

    close the opened first door and unlock the second door when a signal indicating that the transportation vehicle is outside the first door is detected by the first door detection module, and the signal ceases without detection by the first door detection module of a signal indicating that the transportation vehicle has entered the passage through the first door.

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