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KR-102961774-B1 - A safety accident prevention system for elevator operators that automatically controls elevator operation through the means of access authentication at the elevator pit door

KR102961774B1KR 102961774 B1KR102961774 B1KR 102961774B1KR-102961774-B1

Abstract

The present invention relates to a system for preventing safety accidents involving elevator workers that automatically controls elevator operation through an access authentication means for an elevator pit door. By performing all recognition and authentication processes for the number of entrants on the access recognition device installed on the elevator pit door, the locking device of the elevator pit door is unlocked or locked, and the elevator is automatically stopped or operated normally, thereby effectively preventing safety accidents involving elevator workers in the elevator pit. The elevator worker safety accident prevention system of the present invention comprises: an elevator main controller (10) that controls the elevator's call, operation, stop, safety, and communication in real time; and an emergency inspection switch unit (20) composed of a plurality of switches connected in series between the elevator main controller (10) and a power supply unit (30), each of which is manually operated by a person to stop the elevator's operation. In the elevator worker safety accident prevention system, the system further comprises: an access recognition device (100) installed on the elevator pit door or on the wall or ceiling next to the door, which detects and determines information of the person entering; an access detection device (110) installed on the elevator pit door or on the wall next to the door, which recognizes the presence of a person and calculates the number of people; and a door locking device (120) that unlocks and locks the elevator pit door. It includes: a batch switch (400) configured between the elevator main controller (10) and the emergency inspection switch unit (20), which operates by an edge gateway (200, 300) to stop or operate the elevator normally; and an edge gateway (200, 300) that receives recognition of a person's presence and the number of people from the person detection device (110), and when the number of people is detected and determined by the person recognition device (100), operates the door locking device (120) to unlock or lock the elevator pit door, and operates the batch switch (400) to control the elevator to stop or operate normally.

Inventors

  • 강언욱

Assignees

  • 주식회사 레스코

Dates

Publication Date
20260508
Application Date
20260116

Claims (8)

  1. An elevator worker safety accident prevention system comprising: an elevator main controller (10) that controls the elevator's call, operation, stop, safety, and communication in real time; and an emergency inspection switch unit (20) composed of a plurality of switches connected in series between the elevator main controller (10) and a power supply unit (30), each of which is manually operated by a person to stop the elevator's operation. An access recognition device (100) installed on the elevator pit door or on the wall or ceiling next to the door, which detects and identifies information about the person entering; An access detection device (110) installed on the door or wall next to the door of the elevator pit (PIT) above, which recognizes the presence of a person and calculates the number of people; A door locking device (120) for unlocking and locking the above elevator pit (PIT) door; A batch switch (400) configured between the elevator main controller (10) and the emergency inspection switch unit (20), which is operated by an edge gateway (200, 300) to stop or operate the elevator normally; and An edge gateway (200, 300) that receives recognition of a person's presence and number of people from the above-mentioned person detection device (110), and when information regarding the number of people is detected and determined by the above-mentioned person recognition device (100), operates the above-mentioned door locking device (120) to unlock or lock the above-mentioned elevator pit (PIT) door, and operates the above-mentioned batch switch (400) to control the elevator to stop or operate normally; An elevator worker safety accident prevention system including
  2. In claim 1, The above edge gateway (200, 300) is, The device receives recognition of a person's presence and the number of people from the above-mentioned person detection device (110), and if the number of people's information is not entered into the above-mentioned person recognition device (100), it outputs a warning announcement through a speaker or sounds an alarm. Elevator worker safety accident prevention system.
  3. In claim 1, The above edge gateway (200, 300) is, When noise or vibration shock exceeding a standard level is detected in the elevator pit, a warning announcement is broadcast through the speaker or an alarm sound is triggered. Elevator worker safety accident prevention system.
  4. In claim 1, The above access recognition device (100) is, An elevator worker safety accident prevention system comprising at least one of a fingerprint reader, a face recognition camera, an iris recognition camera, an AI image recognition camera, an RFID reader, a barcode/QR scanner, a magnetic card reader, an IC smart card reader, an RF/NFC card reader, a smartphone card reader, a voice recognition microphone, and a smartphone recognition device.
  5. In claim 1, The above-mentioned visitor detection device (110) is, Video-based personnel detection means for recognizing the presence of people and determining the number of people through CCTV and AI video analysis; and Sensor-based personnel detection means for recognizing the presence of a person and determining the number of people using one of an infrared sensor, a thermal sensor, or a pressure sensor; An elevator worker safety accident prevention system including any one of the following.
  6. In claim 1, The above elevator worker safety accident prevention system is, It further includes an actuator unit (410) that controls the operation of the batch switch (400) by wireless or wired control of the edge gateway (200); The above emergency inspection switch unit (20) is, Among the governor overspeed detection switch (GRS), compensation rope or chain tension detection switch (CRS), governor rope tension detection switch (GSS), car shaft oil buffer flow check switch (OBSC), counter waiter shaft oil buffer flow check switch (OBSCW), upper safety limit switch (FLU), lower safety limit switch (FLD), main rope breakage detection switch (MTRS), emergency stop device operation detection switch (SCS), emergency elevator stop switch (STOP) on the car control panel, elevator emergency stop switch (ESTOP_1) on the car top inspection box, elevator emergency stop switch (ESTOP_2) on the car top, emergency exit open confirmation switch (EES), secondary elevator emergency stop switch (ESTOP_3) in the pit section, PIR sensor operation confirmation switch (SPIR), elevator emergency stop switch (ESTOP_4) in the machine room, primary elevator emergency stop switch (ESTOP_5) in the pit section, and main rope brake operation confirmation switch (LMSW) including one or more, Elevator worker safety accident prevention system.
  7. In claim 1, The above elevator worker safety accident prevention system is, Capable of being installed and operated independently in a local intranet environment in areas without internet access or areas with unstable internet connectivity Elevator worker safety accident prevention system.
  8. In claim 1, The above edge gateway (200, 300) is, Data is received from the access recognition device (100), and data preprocessing and postprocessing processes are performed through an on-device AI processor. By learning the data preprocessing and postprocessing processes through machine learning in the on-device AI processor, multiple error types and anomalies, including changes in communication data, communication traffic, communication failures, and path settings, are analyzed and derived, and changed codes and data are automatically corrected. The presence of a person and the number of people are recognized from the access detection device (110). When the access recognition device (100) detects and determines information of the number of people, the door locking device (120) is operated to unlock or lock the elevator pit door. The batch switch (400) is operated to control the elevator to stop or operate normally. A WAN, LAN, Bluetooth, and USB connection is provided, which allows real-time monitoring of data stored in the edge gateway (200, 300) and enables setting and verifying data. Equipped, Elevator worker safety accident prevention system.

Description

A safety accident prevention system for elevator operators that automatically controls elevator operation through the means of access authentication at the elevator pit door The present invention relates to a system for preventing safety accidents involving elevator workers, and more specifically, to a system for preventing safety accidents involving elevator workers in an elevator pit by automatically controlling the operation of the elevator and opening/closing the locking device of the elevator pit door and automatically controlling the operation of the elevator only after the recognition and authentication processes for the number of entrants are all performed by an access recognition device installed on the entrance door of the elevator pit. In addition, the present invention relates to an elevator worker safety accident prevention system capable of preventing safety accidents for elevator workers in an elevator pit by performing all visitor recognition and authentication processes for the number of workers entering the elevator pit, thereby unlocking the elevator pit door and simultaneously automatically stopping the operation of the elevator. In addition, the present invention relates to an elevator worker safety accident prevention system that can prevent elevator worker safety accidents in an elevator pit by performing all entrant recognition and authentication processes for the number of workers who entered when coming out of the elevator pit, thereby locking the elevator pit door and simultaneously allowing the elevator to operate normally. Generally, an elevator is configured to include an elevator car positioned to ascend and descend within a shaft, a counterweight connected to the elevator car by a wire rope, and a hoisting mechanism located above the shaft that drives the elevator car and counterweight by making frictional contact with the wire rope and rotating in forward and reverse directions. Vertical rails are installed vertically along the shaft to guide the movement of the elevator car, and the elevator car is typically equipped with a roller guide device to guide its travel path along the vertical rails of the shaft. Safety inspections and maintenance are required for the safe operation of elevator cars. These inspections or maintenance can be performed inside the elevator shaft with a worker riding on the upper side of the car, or by entering the pit located at the bottom of the shaft. To safely perform such inspections and maintenance, the worker must stop the elevator's operation before entering the shaft or pit. Once inside the shaft or pit, the worker operates the inspection switch to switch the elevator's operating mode to inspection mode. Inspection mode is a mode in which the elevator car operates only through manual operation by the worker; it is provided for the purpose of allowing the worker to check the car's operation or move the car for convenience during safety inspections or maintenance. However, due to the fact that the process of stopping the elevator is cumbersome, the time required for a worker to enter the elevator shaft or pit and operate the inspection switch is short, and normal operation is stopped once the switch is operated, workers are skipping the process of stopping the elevator and entering the elevator shaft or pit to operate the inspection switch. However, even if the time required for a worker to enter the elevator shaft or pit and operate the inspection switch is short, if the worker enters the elevator shaft or pit without stopping the elevator, the elevator car may operate during that short period, potentially leading to a safety accident. In addition, the system is configured so that a worker must manually operate a safety switch installed on the top of the elevator car or in the pit to enter, and also manually operate a safety switch inside the top of the elevator car or in the pit to stop the elevator's movement. Under this method, there is a risk of a safety accident if a worker enters the top of the elevator car or in the pit without operating the safety switch due to carelessness or error. For example, if a worker boards the top of an elevator car or enters the pit at the bottom of the elevator shaft while safety is not ensured, there is a high probability that the elevator will operate, and there is always a possibility that the worker will be overturned or crushed by the moving elevator. In fact, safety accidents caused by such situations occur very frequently, so the development of technology to improve this is required. FIG. 1 is a block diagram of an elevator worker safety accident prevention system in a local intranet environment according to a first embodiment of the present invention. FIG. 2 is a block diagram of an elevator worker safety accident prevention system in an internet environment according to a second embodiment of the present invention. FIG. 3 is a circuit diagram of the emergency inspection switch unit (20) shown in FIG.