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

• Current Assignee: Broadwell (Shenzhen) Technology Co., Ltd.
• Original Assignee: Broadwell (Shenzhen) Technology Co., Ltd.
• Inventors: Xiao, Long, Wang, Qin, Yang, Feng, Liu, Fengtao
• Primary Examiner(s): Rephann, Justin B
• Application Number:
  US15/500,379
• Publication Number:
  US 20170218679A1
• Time in Patent Office: 1,506 Days
• CPC Class Codes: E05F 15/73 responsive to movement or presence of persons or objects
• CPC Class Codes: E05F 2015/763 using acoustical sensors
• CPC Class Codes: E05F 2015/765 using optical sensors
• CPC Class Codes: E05Y 2900/116 for sluices
• CPC Class Codes: E05Y 2900/132 Doors
• CPC Class Codes: E06B 5/10 for protection against air-raid or other war-like action; for other protective purposes

Abstract

An air-tight door system and a control method therefor. The air-tight door comprises a first door (M1), a second door (M2), a first door detection module (S1, S2, P1), a second door detection module (S3, S4, P2) and a controller (K). The air-tight door control method comprises: the first and second detection modules (S1, S2, P1, S3, S4, P2) detect whether the first door (M1) and the second door (M2) are completely closed; and the controller (K) controls opening and closing of the first door (M1) and the second door (M2) according to whether the first and second doors (M1, M2) are completely closed. The air-tight door system and the control method therefor ensure that at least one door is in the closed state at any time, thereby further improving air-tightness and device safety.

Claims

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.

2. The air-tight door system according to claim 1, wherein the first door detection module comprises a first door inside detection mechanism, a first door outside detection mechanism, and a first door closing detection mechanism, the first door inside detection mechanism is configured to detect whether the transportation vehicle is located at the inner side of the first door, the first door outside detection module is configured to detect whether the transportation vehicle is located outside the passage and adjacent to the first door, and the first door closing detection mechanism is configured to detect whether the first door is completely closed.

3. The air-tight door system according to claim 1, wherein the second door detection module comprises a second door inside detection mechanism, a second door outside detection mechanism, and a second door closing detection mechanism, the second door inside detection mechanism is configured to detect whether the transportation vehicle is located inside the passage and adjacent to the second door, the second door outside detection mechanism is configured to detect whether the transportation vehicle is located outside the passage and adjacent to the second door, the second door closing detection mechanism is configured to detect whether the second door is completely closed.

4. The air-tight door system according to claim 1, wherein the first door detection module and/or the second door detection module comprise a sensor selected from the group consisting of an infrared ranging sensor, an ultrasonic ranging, a radar ranging sensor, or a laser sensor.

5. An air-tight door control method, comprising the following steps:

detecting whether there is a transportation vehicle waiting to enter a first door, opening the first door and configuring a second door to prohibit opening when the transportation vehicle is detected waiting to enter the first door;

the first door and the second door being an entrance and an exit of a passage, wherein the passage is air-tight when the first door and the second door are closed;

detecting whether the transportation vehicle passes through the first door and into the passage completely, and when the transportation vehicle has passed through the first door, closing the first door and configuring the first door to prohibit opening;

detecting whether the transportation vehicle waits to depart the passage through the second door, and detecting whether the first door is completely closed at the same time, when both the transportation vehicle waits to depart and the first door is completely closed, unlocking and opening the second door;

detecting whether the transportation vehicle passes through the second door completely, and when the transportation vehicle has passed through the second door completely, closing the second door;

detecting whether the second door is completely closed, when the second door is completely closed, unlocking the first door, and

closing the first door and unlocking the second door when a signal indicating that a transportation vehicle is waiting to enter the first door is detected and the signal ceases without detection of the transportation vehicle passing through the first door completely.