Elevator car position detecting device and method

Abstract

The invention discloses an elevator car position detecting device and method. The elevator car position detecting device comprises a car, a detection code belt, a scanning sensor, belt tensioners, a sinker weight and a control cabinet, wherein the scanning sensor is electrically connected with the control cabinet, the belt tensioners are matched with the detection code belt which is wound round the belt tensioners, two ends of the detection belt are respectively connected with the car and the sinker weight, the detection code belt is provided with a plurality of matrix array graphs composed of pattern marks, the plurality of matrix array graphs are arranged on the detection code belt in a column mode, and the scanning sensor corresponds with the matrix array graphs. The car moves to drive the detection code belt, the scanning sensor scans the matrix array graphs and conveys the information to the control cabinet, the control cabinet computes the numbers and the length of the matrix array graphs to obtain a car movement distance to obtain the position where the car is. The elevator car position detecting device and method can overcome disadvantages of building civil engineering, avoid signal attenuation and accurately detect the position of an elevator car.

Description

technical field [0001] The invention relates to the technical field of elevator equipment, in particular to an elevator car position detection device and method. Background technique [0002] At present, there are many methods for detecting the position of the elevator car, such as infrared ranging, laser ranging, grating ranging, ultrasonic ranging, Bluetooth ranging, etc., but the above methods have many shortcomings: infrared ranging is cheaper, but accurate The accuracy is also low, the distance measurement is small, and it has divergence; the laser distance measurement accuracy is high, but the installation and adjustment requirements are high, and the equipment cost is also high; In addition, it is easy to cause measurement errors due to the conditions of the civil construction of the shaft; ultrasonic ranging can withstand dust and oil, but the equipment cost is high and the accuracy is low; Bluetooth ranging is low in cost and easy to install, but the signal is easy ...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many methods for detecting the position of the elevator car, such as infrared ranging, laser ranging, grating ranging, ultrasonic ranging, Bluetooth ranging and other methods, but the above methods have many shortcomings: infrared ranging is cheaper, but accurate The accuracy is also low, the distance measurement is small, and it has divergence; the laser distance measurement accuracy is high, but the installation and adjustment requirements are high, and the equipment cost is also high; In addition, it is easy to cause measurement errors due to the conditions of the civil construction of the shaft; ultrasonic ranging can withstand dust and oil, but the equipment cost is high and the accuracy is low; Bluetooth ranging is low in cost and easy to install, but the signal is easy Attenuation, unstable measurement conditions

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