A boarding bridge lift safety monitoring system
A technology of safety monitoring system and lifting control, which is applied to aircraft parts, ground equipment, transportation and packaging, etc. It can solve problems such as personnel injury, aircraft damage, logic error of boarding bridge control system, etc., and achieve the effect of ensuring safety
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Embodiment 1
[0037] see figure 1 , which is a schematic diagram of Embodiment 1 of the safety monitoring system for boarding bridge lifting provided by the present invention.
[0038] The boarding bridge lifting safety monitoring system provided in this embodiment includes: a displacement sensor 101, a controller 102 and a relay 103;
[0039] The normally closed contacts of the relay 103 are connected in series in the emergency stop button circuit of the lifting control module of the boarding bridge;
[0040] The displacement sensor 101 is arranged on the boarding bridge for detecting the height of the boarding bridge to the ground, and sending the height to the controller 102;
[0041] It can be understood that the displacement sensor 101 detects the absolute height of the boarding bridge to the ground, and the current displacement sensor 101 can output an analog signal of a standard range. For example, the output height is represented by a current signal, and the range of the current si...
Embodiment 2
[0055] see figure 2 , which is a schematic diagram of Embodiment 2 of the safety monitoring system for boarding bridge lifting provided by the present invention.
[0056] It should be noted that the controller in the monitoring system provided by the present invention may be a microprocessor, such as a single-chip microcomputer or DSP, or may be a programmable logic controller (PLC).
[0057] In this embodiment, the controller is taken as an example for introduction. For example, Siemens S7300 series PLC can be used.
[0058] It should be noted that the PLC includes a memory, the height reference value can be stored in the memory, and the height of the boarding bridge detected each time can also be stored in the memory.
[0059] The displacement sensor 101 outputs the height of the analog signal to the PLC102;
[0060] The PLC 102 obtains the predetermined normal height range in advance.
[0061] Specifically, the PLC102 obtains the predetermined normal height range in ad...
Embodiment 3
[0070] see image 3 , which is a schematic diagram of Embodiment 3 of the boarding bridge lifting safety monitoring system provided by the present invention.
[0071] In addition, the boarding bridge lifting safety monitoring system provided in this embodiment also includes: a host computer 104 and an audible and visual alarm module 105;
[0072] The controller 102 is further configured to send an alarm message to the host computer 104 when the altitude exceeds the predetermined normal altitude range;
[0073] The host computer 104 is configured to notify the duty personnel in the duty room after receiving the alarm information;
[0074] The controller 102 is also used to control the contact of the alarm relay to close when the height exceeds the predetermined normal height range, so that the sound and light alarm module 105 will give an alarm; the sound and light alarm module 105 is connected with the The contacts of the alarm relay described above are connected in series. ...
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