Elevator car position detection device and method

Abstract

The invention discloses an elevator car position detection device and method. The elevator car position detection device includes a car, a detection code belt, a scanning sensor, a tensioner pulley, a vertical weight and a control cabinet. The scanning sensor and the control cabinet are electrically Sexual connection, the tensioning wheel is matched with the detection code belt, the detection code belt is wound on the tensioner wheel, and the two ends of the detection code belt are respectively connected with the car and the vertical weight, and there are multiple pattern marks on the detection code belt A matrix array diagram is formed, a plurality of the matrix array diagrams are arranged in columns on the detection code strip, and the scanning sensor can correspond to the matrix array diagram. When the car moves, it drives the detection code belt, scans the matrix array image scanned by the sensor and transmits this information to the control cabinet, and the control cabinet calculates the number and length of the matrix array image to obtain the moving distance of the car, thereby obtaining its location . The elevator car position detection device and method can overcome unfavorable conditions of construction and civil engineering, have no signal attenuation problem, and can detect the position of the elevator car with high precision.

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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