Intelligent anti-pinch controller for pneumatic inner swing door

Abstract

The invention discloses an intelligent anti-pinch controller for a pneumatic inner swing door, belongs to the field of safety for anti-pinch operation of pneumatic passenger doors and provides a device for rapidly enabling a passenger door to move in the opposite direction when a passenger is pinched by the pneumatic inner swing door of a passenger car in the door opening and closing processes soas to prevent the passenger from being pinched. According to the intelligent anti-pinch controller for the pneumatic inner swing door, linear signals of air cylinder movement in the door opening and closing processes are collected by a signal collection device 1, the signals are converted into logic signals by a linear signal processing module 2, and then the logic signals are transmitted to a logic control module 3; and when the passenger or an object is pinched by the passenger door in the movement process, air cylinder movement is blocked, the linear signals are greatly changed, the logic control module 3 outputs the logic signals according to the change of the linear signals, and an anti-pinch signal output device 4 converts the received logic signals into anti-pinch control signals.

Description

technical field [0001] The invention belongs to the safety field of anti-clamping of the pneumatic inner swing door, and more specifically relates to a method for quickly moving the passenger door in the opposite direction when the passenger car's pneumatic inner swing door is clamped in the process of opening and closing the door, so as to prevent the passenger from being pinched. device. Background technique [0002] Clause 1.1.2.6 of the standard GB13094 "Safety Requirements for Passenger Car Structures" puts forward safety requirements for the power-controlled passenger door to prevent passengers from being pinched. At present, there are three kinds of anti-pinch systems commonly used in the market, namely, time-delay anti-pinch system, airbag anti-pinch system and pressure anti-pinch system. These three kinds of anti-pinch systems have their own advantages and disadvantages. Delay anti-pinch system is to detect the time from when the door close signal is sent out to th...

AI Technical Summary

Problems solved by technology

Delay anti-pinch system is to detect the time from when the door close signal is sent out to the end of door closing. When a person is caught, the passenger door is blocked, and the time for closing the door is extended. If the system detects that the passenger door is not fully closed within the set time, it will The door open signal is issued, and the passenger door opens at this time. The disadvantage of the delayed anti-trap system is that it will not open immediately when the passenger is caught, but will not open until the set time. During this period, the passenger will be subjected to continuously increasing clamping force. Therefore, people who are caught will feel more pain, and it will be unbearable for the elderly or children

The airbag anti-pinch system is to detect the pressure fluctuation of the airbag in the rubber strip on the edge of the door. When the door is clamped by the passenger, the deformation pressure of the airbag increases. The disadvantage is that the movement trajectory of the passenger door makes the position of the person clamped at different door closing positions different. It may be that the edge of the door panel clamps the person but the airbag is not deformed. At this time, the anti-pinch fails

The pressure anti-pinch system is to detect the pressure of the exhaust end of the door pump when the door is closed. When the door is clamped to the passenger, the pressure of the exhaust end of the door pump to close the door drops. When the pressure drops to the system setting value, the door will be opened. The influence of the air source pressure, when the air source pressure decreases, the pressure at the exhaust end of the door pump will also decrease during the door closing process, and the anti-pinch system is prone to misjudgment, causing the passenger door to fail to close normally

Since most of the passenger doors of buses open inwards, and many buses are crowded, people may be trapped when the doors are opened

The above several anti-pinch controllers are only anti-pinch when the door is closed, and there is no anti-pinch function when a person is caught during the door opening process.

Images