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Performance detection system and method for correction device of car absolute position measurement system

A correction device and absolute position technology, applied in transportation, packaging, elevators, etc., can solve problems such as inaccurate measurement of the absolute position of the car

Active Publication Date: 2021-02-26
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a performance detection system and method of the correction device of the absolute position measurement system of the car, which can solve the problem of the absolute position measurement of the car when the scale of the absolute position measurement system of the car expands with heat and contracts with cold. inaccuracies while providing reliable monitoring of calibration device performance

Method used

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  • Performance detection system and method for correction device of car absolute position measurement system
  • Performance detection system and method for correction device of car absolute position measurement system
  • Performance detection system and method for correction device of car absolute position measurement system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0070] In this example, if figure 1 As shown, the performance detection system includes a photoelectric switch 18 and a photoelectric shading plate 19, the photoelectric switch 18 is fixedly installed on the top of the car 2, the photoelectric shading plate 19 is fixedly installed on the shaft wall, and the photoelectric switch 18 communicate with the control device 1 .

[0071]When the car 2 is in the leveling position of the ground floor and the distance between the photoelectric switch 18 and the upper edge of the photoelectric shading plate 19 is a set distance, the position of the upper edge of the photoelectric shading plate 19 is the actuation position. Usually, when the car 2 is at the leveling position of the ground floor, the set distance between the induction position of the photoelectric switch and the upper edge of the photoelectric shielding plate is less than 500mm, and the distance value needs to ensure that the speed of the elevator passing the actuating posit...

no. 2 example

[0080] The difference from the first embodiment is that the positions of the photoelectric switch 18 and the photoelectric shading plate 19 are exchanged, that is, the photoelectric shading plate 19 is fixedly installed on the top of the car 2, and the photoelectric switch 18 is fixedly installed on the shaft wall. and communicate with the control device 1 through the transmission cable 9, such as image 3 shown.

[0081] The performance testing method of the calibration device in this embodiment is the same as that in the first embodiment, so the description will not be repeated here.

no. 3 example

[0083] Different from the first embodiment, the photoelectric switch 18 is directly connected to the scale sensor 4 for communication, such as Figure 4 As shown, when the photoelectric switch 18 passes through the actuation position, an actuation signal is sent and transmitted to the scale sensor 4, and the scale sensor 4 immediately latches the position information detected when the photoelectric switch 18 undergoes a signal jump, and stores the latched position information. The position information is transmitted to the control device 1 , which can avoid the impact of transmission delay on the latch position accuracy and reduce the number of transmission cables.

[0084] The performance testing method of the calibration device in this embodiment is the same as that in the first embodiment, so the description will not be repeated here.

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Abstract

The invention discloses a performance detection system and method for a correction device of a car absolute position measurement system. The correction device is arranged at the lower end of a scale.The performance detection system comprises a proximity switch and a sensed object matched with the proximity switch; one of the proximity switch and the sensed object is in rigid connection with a car; and the other one of the proximity switch and the sensed object is in rigid connection with a shaft wall. A control device collects position information detected by a scale sensor when the proximityswitch passes through the actuating position each time, and the overall length variation of a scale is calculated according to the position information, the initial position detected by the scale sensor when the scale installation initial proximity switch passes through the actuating position and a preset actuating position; and if the difference between the calculated overall length variation ofthe scale and the scale length variation acquired by the correction device is greater than a set threshold, the performance of the correction device is judged to be abnormal, otherwise, the performance of the correction device is judged to be normal, and correction is allowed. According to the system and the method, the target position can be corrected accurately and timely when the scale expandswith heat and contracts with cold.

Description

[0001] This case is a divisional application of a patent application with an application date of April 30, 2019 and an application number of 201910359440.9 titled Calibration Device for Car Absolute Position Measurement System, Performance Detection System and Method of the Calibration Device. technical field [0002] The invention relates to elevator equipment, and specifically belongs to a correction device of a car absolute position measurement system, a performance detection system and a method of the correction device. Background technique [0003] During the operation of the elevator equipment, it is necessary to detect the absolute position of the elevator car in real time. For example, the invention patent with the application number 02815014.7 and the name "Elevator Equipment with a Measuring System for Measuring the Absolute Position of the Car". On the basis of the aforementioned car absolute position measurement system, the invention patent CN104144868A refines a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/00B66B1/40B66B1/34
CPCB66B5/0037B66B5/0031B66B1/40B66B1/3423
Inventor 马祎炜毛华夫
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD