A method for assessing the safety status of elevators

Abstract

The invention relates to an elevator safety condition evaluation method. The elevator safety condition evaluation method comprises the following steps that S1, the fault state of an elevator is acquired and judged through an elevator running signal, and the fault rates of all systems and components of the elevator are stored, statistically analyzed and obtained; S2, the fault rates of all the systems and components of the elevator are converted into risk modification coefficients f and f<ij> of the systems and the components through a non-linear fuzzy computation method based on expert knowledge; S3, all factors of the components in all the systems of the elevator are evaluated on site, and the risk levels r<ij> of the components in all the systems of the elevator are judged; S4, the risk values (please see the specification for the formula) of all the systems are obtained by calculating the sum of the products of the risk modification coefficients f<ij> of the components in all the systems and the risk levels r<ij> of all the components; and S5, the risk value (please see the specification for the formula) of the whole elevator is obtained by calculating the sum of the products of the risk modification coefficients f of all the systems of the elevator and the risk values r of all the systems. The risk value of the whole elevator is calculated through the combination of the theoretically calculated modification coefficients and the risk levels evaluated on site, and thus the evaluation precision of the risk of the elevator is improved.

Description

technical field [0001] The invention relates to the field of elevator safety evaluation, and more specifically, designs an elevator safety state evaluation method. Background technique [0002] With the rapid development of my country's economic construction and the rapid improvement of people's material and cultural living standards, the elevator is not only an important equipment in the production process, but also a necessary equipment in work and life. Elevators, like cars, are already Transportation equipment frequently used by people. As a vertical means of transportation in high-rise buildings, elevators have become an indispensable device in people's daily life and play an important role in economic development. As a complex mechatronic equipment, the elevator system's operating status will be affected by various factors and cause various failures, which seriously affects the ride comfort and people's personal safety. Therefore, discovering the hidden dangers of ele...

AI Technical Summary

Problems solved by technology

[0004] Under the current development conditions, due to the rapid growth of the number of elevators, the number of elevator maintenance and inspection and testing personnel is obviously insufficient in comparison. It is difficult to eliminate elevator faults in a timely and high-quality way, which increases the risk of passengers. At present, there are many methods for elevator risk assessment, but the weights of existing methods are mostly based on expert experience, resulting in the accuracy of the assessment results and the application The effectiveness is insufficient

Although elevator problems are common, they are difficult to characterize and evaluate. As a result, government supervision, maintenance and accident prevention can only be judged based on experience. The current situation of weak supervision, untimely maintenance, and inadequate prevention

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