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An Adaptive Weighing Method for Cranes

A crane and self-adaptive technology, applied in the field of weighing management, can solve the problems of measuring weight deviation, unfavorable statistics of the cumulative workload of cranes, etc., to achieve a good working state, ensure safe and stable operation, and have rich application scenarios.

Active Publication Date: 2021-07-16
YICHANG WTAU ELECTRONICS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a crane self-adaptive weighing method, which solves the problem that the measured weight has a large deviation from the real weight value when weighing during the operation of the crane, which is not conducive to the accumulation of statistical cranes. workload problem

Method used

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] When the crane load is raised and lowered, the signal of the weight sensor changes greatly in a short period of time, that is, it is a high-frequency signal at this time, and the specific frequency is related to the lifting speed.

[0028] When the load is suspended in the air, the signal amplitude changes little, and the fluctuation period is very long, that is, it is a low-frequency signal at this time. According to the gravitational acceleration and the swing radius, the swing period, that is, the fluctuation period of the signal, can be calculated, and the swing frequency is below about 0.3HZ. in,

[0029] Osci...

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PUM

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Abstract

The present invention relates to a crane self-adaptive weighing method, comprising the following steps or methods: signal parameter setting——the crane hoisting a standard weight load of known weight, respectively acquiring weight sensing signals of the standard weight load in static and dynamic processes, Carry out signal conversion and adaptive low-pass filter processing on the weight sensor signal, perform static calibration or dynamic adjustment on the parameters of the signal adaptive low-pass filter combined with the weight of the standard load, and obtain the comparison data of the standard load weighing process for comparison Queue; Weighing—the crane lifts the load to be weighed, obtains the weight sensor signal of the load to be weighed, and obtains the load to be weighed by performing signal conversion and adaptive low-pass filtering on the weight sensor signal of the load to be weighed The data is compared with the control queue to judge the motion state of the load to be weighed, and calculate the weighing value of the load to be weighed. The invention can ensure that the numerical deviation of the weighing value is within ±3%.

Description

technical field [0001] The invention relates to the technical field of weighing management during crane operation, in particular to a crane self-adaptive weighing method. Background technique [0002] In the moment or lifting capacity limiter of the existing crane, the weight of the load is relatively large. There are two main reasons. One is for safety considerations, and more importantly, for technical reasons. During the lifting process of the load, there is a strong impact, and the load performs a pendulum motion after lifting, so it is difficult to calculate the actual weight of the load accurately. [0003] According to the force formula, when the load is swinging, the signal output by the weight sensor is the superposition of the sinusoidal signal and the DC signal. If the commonly used filtering algorithms such as average value and median value are used to calculate, the obtained load is larger than the actual weight; Protection, the measured weight is too large, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/16B66C15/00
CPCB66C13/16B66C15/00
Inventor 谢邦天高钰敏聂道静曹志勇瞿朋李巍施昌平韩信代宗王俐朱文达雷松松范晓威刘瑞张健夫周贵波
Owner YICHANG WTAU ELECTRONICS EQUIP
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