Elevator running detection method and device based on relative air pressure and height error correction

Abstract

The invention provides an elevator running detection method and device based on relative air pressure and height error correction. The real-time elevator car height is calculated according to the relative air pressure of the real-time elevator position and the previous elevator leveling position, and the elevator leveling state is judged by calculating changes of air pressure data within the preset time; whether the leveling fault exists in an elevator car or not is judged through the comparison of the real-time height and the standard height; the standard height serves as the standard value,and accordingly the error existing during real-time elevator car height calculation and judgment is corrected; the current floor number is calculated through comparison of the real-time height and thestandard height; the elevator car running direction is judged according to the front-back relative air pressure difference of different positions during elevator car running; and elevator car runningspeed is calculated through the real-time height difference during elevator running within the sampling period and in combination with the sampling time. The device is low in economic cost and flexible in installing position. The coincidence degree between the elevator car running information obtained through analysis of a calculation method based on relative air pressure and height error correction and the actual elevator running information is high, and reliability is high.

Description

technical field [0001] The invention relates to a car operation detection of an elevator system, in particular to an elevator operation detection method and device based on relative air pressure and height correction errors. Background technique [0002] With the rapid development of China's economy, the use of elevators has increased rapidly. As special equipment, the safety of its operation has attracted widespread attention. The safety guarantee of elevator operation mainly depends on the regular inspection by the quality supervision department and the regular maintenance by the maintenance unit. However, due to the sharp increase in the number of elevators, there is a shortage of management personnel, and it is difficult to realize timely detection of elevator failures and take effective measures. It is necessary to collect and detect the elevator operation information to reflect the operation status of the elevator in real time. The elevator operation information includ...

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Problems solved by technology

This patent requires the installation of a second barometer at the bottom of the hoistway. Due to the complex environment of the hoistway, the maintenance cost is increased, and the leveling signal is obtained through a photoelectric sensor in this technology. This acquisition method needs to be coordinated on each floor. The installation of light barriers also has the disadvantages of high maintenance costs and inaccurate leveling signals

[0007] There are often data deviations in the detection of elevator operation information, which causes the operation monitoring system to fail to make logical judgments normally, or even give wrong conclusions. Huge impact in the process, even casualties, in view of the above shortcomings, it is necessary to improve the existing technology

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