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CN-121974218-A - Elevator micro-leveling detection device and method

CN121974218ACN 121974218 ACN121974218 ACN 121974218ACN-121974218-A

Abstract

The invention discloses an elevator micro-motion flat layer detection device and method, which solve the problems of more parts and high cost of the existing elevator micro-motion flat layer detection device. The device comprises a flat layer inductor and a flat layer mark component in a hoistway, wherein the flat layer inductor is integrated with a plurality of detection elements for realizing edge detection, flat layer area judgment and micro-motion area judgment of a flat layer area, and different electric signals are output when each element is shielded and not shielded, the flat layer mark component is provided with an upper micro-motion area, a non-micro-motion area and a lower micro-motion area along the vertical direction, shielding sheets matched with the micro-motion area judgment elements are arranged on the flat layer mark component, an upper groove and a lower groove with different vertical lengths are formed by adjacent shielding sheets, and an edge groove matched with the edge detection element is also arranged. The invention simplifies the detection parts, reduces the cost, can accurately identify the position of the car, provides reliable signals for the micro leveling, can also realize the edge detection of the door zone, improves the operation safety of the elevator, and is suitable for the existing elevator control system.

Inventors

  • ZHANG SHIZHAO

Assignees

  • 日立楼宇技术（广州）有限公司

Dates

Publication Date
20260505
Application Date
20260323

Claims (10)

  1. 1. A device for detecting a micro-motion flat floor of an elevator is characterized by comprising a flat floor sensor and a flat floor mark component arranged in an elevator shaft, wherein the flat floor sensor is integrated with a plurality of detection elements for detecting edges of a flat floor area, judging the flat floor area and judging the micro-motion area where a car is located, and outputting different electric signals to an elevator control system when the detection elements are shielded or not shielded, the flat floor mark component is divided into an upper micro-motion area, a non-micro-motion area and a lower micro-motion area along the vertical direction, a plurality of shielding pieces matched with the detection elements judged by the micro-motion area are arranged on the flat floor mark component, an upper groove or a lower groove is formed between the adjacent shielding pieces, the upper groove is arranged in the upper micro-motion area and the lower groove is arranged in the lower micro-motion area, the vertical lengths of the upper groove and the lower groove are unequal, and the flat floor mark component is also provided with an edge groove matched with the detection elements for detecting the edges of the flat floor area.
  2. 2. The elevator micro-motion leveling detection device according to claim 1, wherein the detection elements comprise a first detection element for detecting the edge of a leveling zone, a second detection element for judging the leveling zone and a third detection element for judging the micro-motion zone where the elevator car is located, the three detection elements are arranged on a leveling sensor along the transverse direction, the leveling sensor is fixed on the elevator car to move synchronously with the elevator car, and the leveling mark component is fixed on each leveling position of an elevator shaft.
  3. 3. The elevator micro-motion leveling detection device according to claim 2, wherein the vertical length of the shielding sheet is equal to the minimum shielding distance for generating shielding signals by the detection element, the shielding distance is used for shielding a third detection element and outputting shielding signals, and the middle position of the vertical length of the non-micro-motion area corresponds to the position where the ground of the elevator car is level with the hall sill.
  4. 4. The elevator jog level detecting device of claim 2, wherein the upper slot and the lower slot are used to cause the elevator control system to detect that the car is in the upper jog zone and the lower jog zone, respectively, and the edge slot is used to cause the first detecting element to detect that the car is at the edge of the door zone, and the elevator control system triggers the door closing operation control when the jog direction is unknown and the car is in the edge zone.
  5. 5. The elevator jogging leveling detection device according to claim 2, wherein the non-jogging area of the leveling mark component is a continuous shielding structure, and can simultaneously shield a first detection element, a second detection element and a third detection element, when the leveling mark component is detected by the second detection element, a car is positioned in the leveling area, and the detection element is a photoelectric or magnetic induction detection element, and an electric signal output by the detection element is a high-low level signal.
  6. 6. An elevator micro-motion flat layer detection method based on the device of any one of claims 1-5, characterized by comprising the following steps: S1, an elevator stops at a flat zone and opens a door, an elevator control system records initial load data, and whether a car is in a non-inching zone is judged through detection element signals in the flat zone; s2, when the elevator car needs to jog the leveling layer, the control system calculates the difference value between the current load data and the initial load data, and the jog direction is initially determined according to the difference value; S3, the car runs in the initial direction, the control system judges the actual inching area of the car through the shielding/non-shielding signal of the third detection element, and if the area is not matched with the initial direction, the real-time correction is carried out; s4, the control system controls the car to run to the middle position of the non-inching area and stop, and the ground of the car is flush with the hall outer door bank.
  7. 7. The method for detecting fine movement of an elevator according to claim 6, wherein in the step S1, the condition for judging that the elevator car is in the non-fine movement region is that the first detecting element, the second detecting element and the third detecting element are all shielded by the flat layer marking member, and the running distance of the elevator car is longer than the vertical length of the shielding sheet.
  8. 8. The method according to claim 6, wherein the elevator control system stores the initial load data in the built-in storage unit in step S1, and if the difference between the current load data and the initial load data is smaller than 0 in step S2, the initial inching direction is downward, and the difference is larger than or equal to 0, and the initial inching direction is upward.
  9. 9. The elevator fine motion leveling detection method according to claim 6, wherein in the step S3, the cage is switched to the shielding signal after passing through the upper groove, the shielding sheet and the non-shielding signal continuing distance of the third detection element in the upper fine motion area, is switched to the shielding signal after passing through the lower groove, the shielding sheet and the non-shielding signal continuing distance of the third detection element in the lower fine motion area, is switched to the shielding signal after passing through the lower groove, the fine motion direction correction rule is that the cage is primarily directed to the lower fine motion area, the cage is corrected to the upper direction when being judged to be located in the lower fine motion area, and the cage is primarily directed to the upper fine motion area and the cage is corrected to the lower direction when being judged to be located in the upper fine motion area.
  10. 10. The method according to claim 6, wherein in step S1, the elevator control system determines that the car is in the leveling zone by the shielding signal of the second detecting element and performs inching control only in the leveling zone, and if the control system does not know inching direction and the first detecting element detects that the car is at the edge of the door zone, the door closing operation control is directly triggered; In step S4, when the car moves to the middle position of the non-inching area, the first detecting element, the second detecting element and the third detecting element are all kept in a blocked state, and the control system receives the signal and then controls the car to stop.

Description

Elevator micro-leveling detection device and method Technical Field The invention relates to the technical field of elevator control, in particular to an elevator micro-leveling detection device and method. Background The elevator is used as a vertical transportation tool, and the leveling precision is one of the core running performance indexes of the elevator. When the elevator stops at the destination floor, the ground of the elevator car is required to be precisely leveled with the hall sill so as to bring convenience for safety in and out of personnel and goods, but in the process that the personnel or the goods enter and exit the elevator car, the load of the elevator car can change in real time, so that a steel wire rope suspending the elevator car can generate telescopic deformation, the ground of the elevator car and the hall sill have height deviation, and at the moment, the elevator is required to execute micro-motion leveling operation in a leveling zone so as to enable the elevator car to recover to be leveled with the hall sill. The conventional elevator micro-motion flat layer detection system is generally provided with an independent flat layer sensor A and micro-motion sensors B, and the number of detection elements C is large (as shown in fig. 1), so that the production, installation and maintenance costs of the elevator are high, and the layout of the components at the top of the elevator car is more complicated. Therefore, developing an elevator micro-leveling detection device and method which can simplify detection elements, reduce cost and realize accurate control of micro-leveling is a technical problem to be solved in the field. Disclosure of Invention The invention provides an elevator micro-leveling detection device and method aiming at the technical defects of a large number of detection elements and high cost in the existing elevator micro-leveling detection technology. In order to solve the technical problems, in a first aspect, the invention provides an elevator micro-motion flat layer detection device, which has the following specific technical scheme: A device for detecting micro-motion leveling of an elevator comprises a leveling sensor and a leveling mark component arranged in an elevator shaft, wherein the leveling sensor is integrated with a plurality of detection elements for detecting edges of leveling areas, judging the leveling areas and judging micro-motion areas where a car is located, and outputting different electric signals to an elevator control system when the detection elements are shielded or not shielded, the leveling mark component is divided into an upper micro-motion area, a non-micro-motion area and a lower micro-motion area along the vertical direction, a plurality of shielding pieces matched with the detection elements judged by the micro-motion areas are arranged on the leveling mark component, an upper groove or a lower groove is formed between adjacent shielding pieces, the upper groove is formed in the upper micro-motion area, the lower groove is formed in the lower micro-motion area, the vertical lengths of the upper groove and the lower groove are unequal, and the leveling mark component is also provided with an edge groove matched with the detection elements for detecting the edges of the leveling areas. Further, the detection element comprises a first detection element for detecting the edge of the flat zone, a second detection element for judging the flat zone and a third detection element for judging the micro-motion zone where the car is located, and the three detection elements are arranged on the flat layer inductor along the transverse direction; the leveling sensor is fixed on the elevator car to synchronously move along with the elevator car, and the leveling mark component is fixed on each leveling position of the elevator shaft. Further, the vertical length of the shielding sheet is equal to the minimum shielding distance for generating shielding signals by the detection elements, the shielding sheet is used for forming shielding for the third detection element and outputting shielding signals, and the middle position of the vertical length of the non-micro-motion area corresponds to the position where the ground of the elevator car is flush with the hall outer door bank. The elevator control system is used for controlling the elevator to start and stop the door closing operation when the elevator is in the door zone, and the elevator control system is used for controlling the door closing operation when the elevator is in the door zone. Further, the non-micro-motion area of the flat layer sign component is of a continuous shielding structure, and can simultaneously shield the first detection element, the second detection element and the third detection element, when the second detection element detects the flat layer sign component, the lift car is located in the flat layer area, the detection element is a photoelectric or magnetic i