Air-Tight Door Control via Intermediary Verification
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Solution Overview
Problem
Conventional air-tight door systems in buildings with air-supported membrane structures face challenges in maintaining accurate control and safety due to decreased detection sensitivity and accuracy over time, leading to potential accidents and compromised air-tightness when vehicles pass through.
Innovation Solution
An air-tight door system comprising a first and second door, detection modules, and a controller that coordinates the opening and closing of doors based on detection of vehicle presence and passage, ensuring that at least one door remains closed at all times to prevent accidents and maintain air-tightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional auto-control switch mode with infrared ranging sensor is used, then the door control system is simple, but the detection sensitivity and accuracy decrease over time leading to reduced door control accuracy
Solution Approach 1:
The patent introduces an intermediary mechanism (door state detection module combined with control logic) between the sensor and the door control system. This intermediary verifies the actual door state and coordinates door operations, compensating for sensor accuracy degradation and preventing erroneous door operations even when sensor detection becomes less accurate over time.
2Ease of manufacture
If simple control logic is used, then the control system is easy to implement, but the door may fail to open/close properly affecting safety and air-tightness
Solution Approach 1:
The patent implements feedback control by continuously monitoring door state through detection modules and adjusting control actions accordingly. The system receives feedback on actual door positions and states, compares them with desired states, and makes corrective control adjustments, thereby maintaining high reliability without requiring complex control algorithms.
3Measurement precision
If sensor detection accuracy decreases over time, then maintenance frequency should increase, but this increases loss of time and operational disruption
Solution Approach 1:
The patent applies beforehand cushioning by designing a control system with redundant verification mechanisms and state confirmation logic that compensates for sensor degradation. The system includes buffer logic that verifies sensor readings against multiple criteria before actuating doors, preventing errors even when sensors have degraded, thereby avoiding unplanned maintenance and operational disruptions.
4Productivity
If both doors can open simultaneously, then vehicle passage efficiency increases, but air-tightness is compromised and safety accidents may occur
Solution Approach 1:
The patent applies preliminary action by requiring the first door to be fully closed and locked before the second door is permitted to open. The control system proactively checks door state and executes sequential door operations, ensuring air-tightness is maintained and safety hazards prevented while still allowing efficient vehicle passage through coordinated door timing.
Data Source
AI summary
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.