Elevator component gap measuring system, method and device

Abstract

The invention relates to the technical field of gap measurement, and discloses an elevator component gap measurement system, method and device, the elevator component gap measurement system comprises a data collector and a processor, and acquired analog signals comprise a first reference distance B between the data collector and the tail end of a car door vane, a second reference distance B between the data collector and the tail end of the car door vane; a second reference distance D is arranged between the data collector and the door lock roller; a first distance # imgabs0 # between the data collector and the landing sill; a second distance # imgabs1 # between the data collector and the door lock roller; and obtaining and outputting a detection result based on a preset algorithm. Therefore, the distance between each part in the elevator and the elevator shaft is obtained through various data collected by the elevator part measurement system, such as the first reference distance B, the second reference distance D, the first distance # imgabs2 # and the second distance # imgabs3 #, and the required measurement result can be obtained through calculation based on the basic data obtained through measurement. Therefore, efficient, dynamic and non-contact gap measurement of each part of the elevator is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of gap measurement, and in particular to an elevator component gap measurement system, method and device. Background Art

[0002] When the elevator is running, the car door knife drives the floor door lock roller to open and close the door. Therefore, an important factor for the safe operation of the elevator is the gap between the door knife, door lock roller and the sill. If the gap is too small, it is easy to cause collisions between the components, affecting the normal operation of the elevator and even causing accidents. TSG T7001-2023 "Rules for Elevator Supervision Inspection and Periodic Inspection" and TSG T7008-23 "Elevator Self-Testing Rules" both have requirements for the gap between the door knife, door lock roller and the sill: Check whether the gap between the car door knife and the floor door sill, and the floor door lock roller and the car sill is less than 5mm, and the elevator does not rub against each other when running.

[0003] The current method for measuring the above two gaps is: the measuring personnel are located inside the car (at the landing station), and the cooperating personnel operate the elevator to the corresponding position on the top of the car, open the car door (landing door), and use tools such as steel rulers to measure. During the measurement process, the personnel must cooperate tacitly, and sometimes it takes multiple attempts to reach the appropriate position. The operation is difficult, and the two gaps can only be measured separately.

[0004] Therefore, traditional measurement methods have the problems of extremely low measurement efficiency and safety risks for measurement personnel. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an elevator component gap measurement system, method and device. The elevator component gap measurement method can improve measurement efficiency while ensuring user safety.

[0006] The objective of the present invention is achieved through the following technical solutions: In a first aspect, an elevator component gap measurement system includes a data collector and a processor for receiving an analog signal collected by the data collector; the data collector is arranged on the elevator car, and the collection end of the data collector is arranged toward the car door, and the analog signal obtained by the data collector includes: a first reference distance B, a second reference distance D, a first distance And the second distance ; Wherein, the first reference distance B is the distance between the data collector and the end of the car door blade in the horizontal direction; the second reference distance D is the distance between the data collector and the car door in the horizontal direction; the processor obtains a series of the first distances within a period of time according to a preset frequency And the second distance ,in , N is a positive integer; the first distance is the horizontal distance between the data collector and the door sill at a certain moment, and the second distance is the horizontal distance between the data collector and the door lock roller at a certain moment; the processor calculates the distance according to the first reference distance B, the second reference distance D and the first distance , Second distance Calculate and output the detection results, including: obtain a series of the first distance Minimum value of , get a series of the second distance The minimum value in ; Calculate the distance between the car door blade and the floor door sill , and the distance between the door lock roller and the floor door sill .

[0007] Preferably, before calculating the detection result, a series of the first distances , Second distance Filtering includes: obtaining a series of the first distances and the second distance Filtering is performed if the first distance >B+20mm, then delete the data in the series of the first distances; if a certain second distance >D+20mm, then delete the data in the series of the second distances.

[0008] Preferably, it also includes a signal processor, which receives the analog signal collected by the data collector and sends it to the processor after filtering; the filtering process includes: amplifying the amplitude of the collected analog signal and converting the amplified amplitude signal into a digital signal.

[0009] Preferably, the data collector comprises a laser triangulation sensor, and the angle of the lens module of the laser triangulation sensor is adjustable.

[0010] In the second aspect, a method for measuring the gap between elevator components is implemented based on the above-mentioned elevator component gap measurement system, and specifically includes the following steps: S1, obtaining a first reference distance B between the data collector and the end of the car door knife, obtaining a second reference distance D between the data collector and the car door, and storing the first reference distance B and the second reference distance D; S2, during the operation of the elevator, obtaining a series of the first distances , Second distance ; S3, select the minimum value of a series of the first distances and a series of the second distances The minimum value in , calculate the distance between the car door blade and the floor door sill , and the distance between the door lock roller and the floor door sill .

[0011] Preferably, the method further comprises the step of performing S21 before S3: performing the step of obtaining a series of the first distances and the second distance Filtering is performed if the first distance >B+20mm, then delete the data in the series of the first distances; if a certain second distance >D+20mm, then delete the data in the series of the second distances.

[0012] A third aspect is an elevator component gap measuring device, the above-mentioned elevator component gap measuring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a case where the gap is detected by the elevator component gap detection method according to an embodiment of the present application; Figure 2 is a flow chart of a method for detecting gaps between elevator components according to an embodiment of the present application; Figure 3 This is the principle diagram of laser triangulation distance measurement; Figure 4 is a simplified structural diagram of an elevator component gap detection system according to an embodiment of the present application; Figure 5 It is a schematic diagram of the offset of the receiving mirror of the laser triangulation sensor in the prior art; Figure 6 It is a schematic diagram of the receiving mirror structure of the laser triangulation sensor after adjustment and optimization in some embodiments of the present application.

[0014] In the figure: 100-car; 200-data collector, 210-tester; 300-car door; 400-door lock roller; 500-floor door sill; 600-car door blade. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-Figure 6 The present invention provides an elevator component gap measurement system, method and device.

[0017] First, the manner in which the elevator's bridge door knife pushes the door lock to roll down is explained. In the elevator system, when the elevator reaches a designated floor, the bridge door knife opens through its specific mechanical structure (such as cam, connecting rod, etc.) to interact with the door lock roller 400 on the floor door with a predetermined trajectory and force, causing the door lock roller 400 to move, thereby changing the car door 300 from a locked state to an unlocked state.

[0018] According to the elevator component measurement system of the embodiment of the present application, refer to Figure 1-Figure 2 It is understood that the system includes a data collector 200 and a processor that receives the analog signal collected by the data collector 200. Subsequently, the case where the data collector 200 is installed on the elevator car 100 is used as an example for explanation. The data collector 200 may include a laser sensor and a tester 210.

[0019] The analog signal acquired by the data collector 200 includes: a first reference distance B, a second reference distance D, a first distance And the second distance .

[0020] Among them, the first reference distance B is the distance between the data collector 200 and the end of the car door knife in the horizontal direction, and the distance is fixed, that is, the car door knife 600 is set on the car 100. Therefore, after the data collector 200 is set, the first reference distance B remains unchanged and can be used as a reference; the second reference distance D is the distance between the data collector and the car door in the horizontal direction. Similarly, the second reference distance will not change.

[0021] The processor obtains a series of the first distances within a period of time according to a preset frequency. And the second distance ,in , N is a positive integer; the first distance is the horizontal distance between the data collector and the door sill 500 at a certain moment, and the second distance is the horizontal distance between the data collector and the door lock roller. Figure 1 As shown, the second reference distance D is the horizontal distance between the edge of the car and the data collector; the second distance It is the distance between the data logger and the side of the door lock roller close to the car.

[0022] The processor determines the first reference distance B, the second reference distance D and the first distance , Second distance The detection result is obtained based on the preset algorithm and output. Specifically, starting from the initial moment of the elevator movement, the first distance is obtained in sequence according to time. , Second distance , to obtain the aforementioned series of values, the detection results at least include the distance E between the car door blade 600 and the landing door sill 500 and the distance F between the door lock roller 400 and the landing door sill 500.

[0023] Furthermore, during the operation of the elevator, whether ascending or descending, when the distance between the data collector 200 and the door lock roller 400 or the floor door sill 500 is the smallest, it means that a certain floor has been reached; when the elevator is in this position, it is necessary to obtain the gap between the door knife and the floor door sill 500, and the gap between the door lock roller 400 and the floor door sill 500.

[0024] Therefore, according to the first distance The minimum value in , Second distance The minimum value in , when the elevator reaches a certain floor, the distance E between the car door knife 600 and the floor door sill 500 and the distance F between the door lock roller 400 and the floor door sill 500 can be obtained, and then it can be determined whether the distance E and the distance F are less than 5 mm. If so, the elevator needs to be repaired.

[0025] In this embodiment, the processor calculates the first reference distance B, the second reference distance D and the first distance , Second distance Calculate and output the detection results, including: obtain a series of the first distances The minimum value in , get a series of the second distance The minimum value in ; Combine Figure 1 As shown, after the car 100 arrives at a certain floor, the difference between the distance between the data collector 200 and the floor door threshold 500 and the distance between the car door blade 600 is the distance between the car door blade 600 and the floor door threshold 500. After the car 100 arrives at a certain floor, the difference between the data collector 200 and the door lock roller 400 and the car door 300 is the distance between the door lock roller 400 and the floor door sill 500. .

[0026] Exemplarily, the processor may be a single chip microcomputer, which receives the first distance based on a specific frequency. and the second distance For example, the sampling frequency is set to 30 Hz, and then the aforementioned series of data is obtained, and the corresponding minimum value is calculated by any algorithm such as a sorting algorithm or a comparison algorithm.

[0027] It can be understood that the various data collected by the elevator component measurement system, such as the first reference distance B, the second reference distance D and the first distance , Second distance , in order to obtain the distance between each component in the elevator and the elevator shaft, based on the basic data obtained from these measurements, the required measurement results can be calculated. This enables efficient, dynamic and contactless measurement of the gaps between various elevator components, thereby solving the problem of low efficiency and potential safety hazards in the existing manual measurement method, thereby reducing the workload of inspection and testing personnel and achieving efficient, safe and scientific measurement.

[0028] The applicant further considers that due to the complex structure in the well, the uneven well wall and the floor door footboard affect the method in obtaining the first distance. and the second distance In the process of filtering, a large amount of invalid data will be obtained, so it is necessary to filter out these invalid data.

[0029] To this end, in some embodiments, the preset algorithm includes a second preset algorithm, and the second preset algorithm includes: and the second distance Filtering is performed if the first distance >B+20mm, then delete the data in the series of the first distances; if a certain second distance >D+20mm, then delete the data in the series of the second distances. The second algorithm is executed before the first algorithm.

[0030] Therefore, by filtering invalid data through the above algorithm, the influence of the complex structure in the shaft, especially the uneven shaft wall and the floor door toe plate on the measurement results is greatly reduced, the amount of data that the processor needs to process is reduced, and the efficiency and accuracy of the detection results are improved.

[0031] Of course, the above-mentioned preset algorithm can be stored based on a computer-readable storage medium and finally implemented through a computing device. For example, the single-chip microcomputer mentioned above can implement the corresponding algorithm through the stored computer medium.

[0032] In some embodiments, the data collector 200 can use a laser triangulation sensor, such as a BL400NZ laser ranging sensor, and is connected to a tester 210. The laser ranging sensor is set on the car 100 through the tester 210. The angle of the receiving lens group of the laser triangulation sensor is adjustable. The sensor uses a light adaptive algorithm, which can sense the surface of the object and balance the laser power, gain, emission time, exposure time and other parameters. It can complete the 100:1 dynamic range of light input control with an adjustment time of microseconds, and can achieve stable measurement for different surface reflectivities of the floor door sill 500 and the door lock roller 400.

[0033] Furthermore, considering that the structure of the conventional laser triangulation sensor receiving lens module will cause refraction due to the angle between the filter and the optical axis, resulting in a shift in the focus position. In addition, surface reflection will also cause corresponding attenuation; in this embodiment, the user can adjust the sensor lens module angle according to actual needs to avoid multiple light spots caused by multiple reflections on the filter surface and the resulting misjudgment of the measurement position.

[0034] For example, Figure 5-Figure 6 As shown in the figure, by adjusting the angle to optimize the receiving lens module, the light passes through the filter at a smaller incident angle, which can minimize the multiple light spots caused by multiple reflections on the filter surface and the resulting misjudgment of the measurement position. Specifically, the sensor uses laser triangulation to achieve non-contact distance measurement of the elevator gap. The light beam emitted by the laser sensor is irradiated on the surface of the object to be measured and then reflected. The reflected light is converged by the lens, and the converged light spot is imaged on the position sensor PSD. The distance to the object to be measured is calculated through geometric relationships. Stable measurement can be achieved for different surface reflectivities of the floor door sill 500 and the door lock roller 400. Figure 3 As shown, the calculation formula for the distance l of the measured object is: ; Where: f is the focal length of the sensor optical system; d is the distance between the laser beam and the optical axis of the optical system lens; h is the projection height of the detection target on the focusing mirror.

[0035] The processor may be a single chip microcomputer. Since the amplitude of the analog signal collected by the sensor is small, it is not conducive to subsequent processing. To this end, the elevator component gap measurement system in this example also includes a signal processor, which receives the analog signal collected by the data collector 200 and sends it to the processor after filtering.

[0036] Specifically, the signal processor is used to appropriately amplify the collected analog signal, and at the same time filter out invalid signals through a filter, and finally convert the analog signal obtained by the data collector 200 into a digital signal through an A / D converter for processing by the single chip microcomputer.

[0037] The single chip microcomputer receives the digital signal sent by the signal processor, and then filters and calculates to obtain the detection result, and the result processed by the single chip microcomputer is stored in the storage data storage module.

[0038] For example, the processor uses an AT89C52 single-chip microcomputer, which has low power consumption, high performance, and a counting accuracy of us. It has a programmable full-duplex serial communication interface, which can simultaneously realize serial reception and transmission, and realize comparison and calculation of collected data information. The data storage module uses a Micron Nand Flash chip MT29F64G08AFAAA, with an operating voltage of 3V-6V and a capacity of 64GB. The memory has high storage density and fast read and write speed, and is very suitable for storing large amounts of data.

[0039] In some embodiments, Figure 2 The system also includes an output module for displaying the measured data, the distance E between the car door blade 600 and the floor door sill 500, and the distance F between the door lock roller 400 and the floor door sill 500. Specifically, the final measured data can be directly presented through the LED display module, which is convenient for inspection and testing personnel to judge the inspection and testing results. At the same time, it can also be printed out to facilitate on-site evidence collection by inspection and testing personnel.

[0040] According to the elevator component gap measurement method of the embodiment of the present application, refer to Figure 4 It is understood that the elevator component gap measurement system described in the above embodiment is implemented, including the following steps: S1. Obtain a first reference distance B between the data collector 200 and the end of the car door blade 600, obtain a second reference distance D between the data collector 200 and the door lock roller 400, and store the first reference distance B and the second reference distance D.

[0041] Exemplarily, the single chip microcomputer may first execute S1, send corresponding instructions to the data collector 200 to obtain analog signals of the first reference distance B and the second reference distance D, and then convert them into digital signals through the signal processor, store the digital signals and then proceed to subsequent steps.

[0042] S2. During the operation of the elevator, a series of the first distances are obtained. , Second distance For example, the single-chip microcomputer can also receive a signal of the elevator running. If the elevator is running, the single-chip microcomputer obtains the corresponding first distance according to the preset frequency. , Second distance , otherwise it is not obtained.

[0043] S3: Select the minimum value in a series of the first distances and the minimum value in a series of the second distances. , calculate the distance between the car door blade 600 and the landing door sill 500 , and the distance between the door lock roller 400 and the landing door sill 500 In this way, it can be determined based on the obtained detection results whether the distance E between the car door blade 600 and the floor door sill 500 and the distance F between the door lock roller 400 and the floor door sill 500 are less than 5 mm. If so, the elevator needs to be repaired.

[0044] In some embodiments, the method further needs to perform S21 before S3: filtering a series of the first distances and a series of the second distances obtained, if a first distance >B+20mm, then delete the data in the series of the first distances; if a certain second distance >D+20mm, then delete the data in the series of the second distances.

[0045] Exemplary, reference Figure 1 As shown, first obtain a first reference distance B and a second reference distance D, the first reference distance B and the second reference distance D can be obtained by pre-measurement, and then stored in the single chip microcomputer, and then the elevator is operated, and the single chip microcomputer controls the data collector 200 to collect a number of first distances and second distances , the microcontroller will set all the first distance , Second distance Filter and get the first distance after filtering , Second distance .

[0046] Finally, the distance E between the car door blade 600 and the landing door sill 500 and the distance F between the door lock roller 400 and the landing door sill 500 are calculated, and the results are finally printed out through the serial port.

[0047] According to the elevator component gap detection device of the embodiment of the present application, the elevator component detection system in the above embodiment is mounted to implement the elevator component detection method in the above embodiment.

[0048] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. An elevator component gap measurement system, characterized in that: It includes a data collector and a processor for receiving analog signals collected by the data collector; The data collector is arranged on the elevator car, and the collection end of the data collector is arranged toward the car door. The analog signal obtained by the data collector includes: the first reference distance B, the second reference distance D, the first distance And the second distance ; The first reference distance B is the distance between the data collector and the end of the car door blade in the horizontal direction; the second reference distance D is the distance between the data collector and the car door in the horizontal direction; the processor obtains a series of the first distances within a period of time according to a preset frequency. And the second distance ,in , N is a positive integer; the first distance is the horizontal distance between the data collector and the door sill at a certain moment, and the second distance is the horizontal distance between the data collector and the door lock roller at a certain moment; The processor determines the first reference distance B, the second reference distance D and the first distance , Second distance Calculate and output the test results, including: Get the first distance in a series Minimum value of , get a series of the second distance The minimum value in ; Calculate the distance between the car door blade and the floor door sill , and the distance between the door lock roller and the floor door sill .

2. The elevator component gap measurement system according to claim 1, characterized in that: Before calculating the detection result, a series of the first distances , Second distance Filters include: The first distance of the series obtained and a series of the second distance Filtering is performed if the first distance >B+20mm, then delete the data in the series of the first distances; if a certain second distance >D+20mm, then delete the data in the series of the second distances.

3. The elevator component gap measurement system according to claim 1, characterized in that: It also includes a signal processor, which receives the analog signal collected by the data collector and sends it to the processor after filtering; The filtering process includes: amplifying the amplitude of the collected analog signal and converting the amplified amplitude signal into a digital signal.

4. The elevator component gap measurement system according to claim 1, characterized in that: The data collector comprises a laser triangulation sensor, and the angle of the lens module of the laser triangulation sensor is adjustable.

5. A method for measuring the gap between elevator components, characterized in that: The elevator component gap measurement system according to any one of claims 1 to 4 is implemented, and specifically comprises the following steps: S1, obtaining a first reference distance B between the data collector and the end of the car door blade, obtaining a second reference distance D between the data collector and the car door, and storing the first reference distance B and the second reference distance D; S2. During the operation of the elevator, a series of the first distances are obtained. , Second distance ; S3: Select the minimum value in a series of the first distances and a series of the second distances The minimum value in , calculate the distance between the car door blade and the floor door sill , and the distance between the door lock roller and the floor door sill .

6. The elevator component gap measurement method according to claim 5, characterized in that: It also includes S21 executed before S3: The first distance of the series obtained and a series of the second distance Filtering is performed if the first distance >B+20mm, then delete the data in the series of the first distances; if a certain second distance >D+20mm, then delete the data in the series of the second distances.

7. An elevator component gap measuring device, characterized in that: The invention is equipped with an elevator component gap measurement system as described in any one of claims 1 to 4.

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