Intelligent detection device for detecting motion state of lift car

Abstract

The invention provides an intelligent detection device for detecting the motion state of a lift car. The device is installed on the outer side of a lift car door, and the accelerated speed and the airpressure value of a certain position of the lift car door are collected through an accelerometer and an air pressure meter and transmitted to a MCU to be subjected to data processing. After the air pressure value of the accelerometer is corrected through the MCU, third-order Kalman filtering is conducted according to the accelerated speed of the vertical direction of the accelerometer and the airpressure value read by the air pressure meter, the height, the speed and the accelerated speed of the current lift car are obtained, and the rising, falling and stopping states of the lift car are judged; and after the accelerated speed of the horizontal direction of the accelerometer is corrected and subjected to Kalman filtering, the speed and the displacement of the lift car door are obtainedthrough a frequency-domain quadratic integral method, and the door opening, the door closing, the door opening in-place and door closing in-place states of the lift car door are judged. According to the device, the installing position is hidden, and the precision of the obtained detection results is high.

Description

technical field [0001] The invention relates to an elevator motion state detection technology, in particular to an intelligent detection device for detecting the motion state of a car. Background technique [0002] With the widespread application of elevators in buildings, accidents caused by hidden safety hazards have gradually increased. In recent years, the safe operation of elevators has received extensive attention. Although the elevator products put into operation have met the national standards and their safety is guaranteed to a certain extent, with the passage of time, the probability of elevator failure will also increase, and there are many potential safety hazards. The elevator maintenance industry and some property management companies have gradually begun to use operating status monitoring systems other than the original elevator system to provide third-party monitoring information. When the main system fails unexpectedly, the monitoring system can still obtain...

AI Technical Summary

Problems solved by technology

If the number of sensors is too large, on the one hand, it will increase the complexity of the system, on the other hand, it will also increase the production cost and installation difficulty; and when the number of sensors is too small, the measurement error caused by the sensor itself or other environmental factors will easily cause the final The calculated deviation or the judged state of the car and car door is inaccurate or even seriously deviated

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