阅读说明：本技术 一种实时监控工程机械运行状态的方法 (Method for monitoring operation state of engineering machinery in real time ) 是由 王冠杰 于 2019-10-09 设计创作，主要内容包括：本发明公开了一种实时监控工程机械运行状态的方法,用于工程机械管理技术领域,本发明采集工程机械三轴的角速度和加速度进行处理后与机械正常工作时的角速度、加速度的阈值进行对比,可有效的监测机械的运行状态,较人工核查而言,效率高,结果准确度高,可减少产生漏报、多报的情况,避免虚报工作量、工作时长的问题。(The invention discloses a method for monitoring the running state of an engineering machine in real time, which is used in the technical field of engineering machine management.)

1. A method for monitoring the operation state of engineering machinery in real time is characterized in that: acquiring angular speeds and accelerations on three axes of the engineering machinery at a fixed frequency by using a six-axis sensor;

for angular velocity, sequentially taking X fixed windows on each axis, collecting A angular velocity data in each fixed window, subtracting median of data in each fixed window from the data in each fixed window, taking absolute value of the obtained difference, and averaging the obtained absolute value; adding the three averages of the windows corresponding to the three axes into a sum value; thus, X sum values are obtained, 0.75 quantiles and 0.25 quantiles of the X sum values are taken, subtraction is carried out, the sum values are compared with a threshold value C, and when the sum values are larger than or equal to the threshold value C, the engineering machinery works;

for acceleration, sequentially taking Y fixed windows on each axis, collecting B acceleration data in each fixed window, sampling the data in each fixed window at intervals, calculating the difference value between the next item and the previous item for the sampled data, taking the median of the difference value, taking the absolute values of the three median of the windows corresponding to the three axes, and adding the absolute values to obtain a sum value; thus, Y sum numbers are obtained, 0.75 quantiles of the Y sum numbers are compared with a threshold D, and when the number of quantiles of the Y sum numbers is smaller than or equal to the threshold D, the engineering machinery is in a static state;

the non-working and non-static state is the idle state.

2. The method for monitoring the operating state of the engineering machinery in real time according to claim 1, wherein the method comprises the following steps: the method for measuring the threshold value C comprises the following steps: when the machine normally works, acquiring angular velocities on three axes of the engineering machine at a fixed frequency by using a six-axis sensor, sequentially acquiring X fixed windows on each axis, acquiring A angular velocity data in each fixed window, subtracting median of data in each fixed window by using the data in each fixed window, taking an absolute value of an obtained difference value, and averaging the obtained absolute values; adding the three averages of the windows corresponding to the three axes into a sum value; thus, X sum numbers are obtained, and the 0.75 quantile and the 0.25 quantile of the X sum numbers are subtracted to obtain the threshold C.

3. The method for monitoring the operating state of the engineering machinery in real time according to claim 1, wherein the method comprises the following steps: the method for measuring the threshold value D comprises the following steps: when the machine normally works, acquiring the acceleration of the engineering machine on three shafts at a fixed frequency by using a six-shaft sensor, sequentially taking Y fixed windows on each shaft, acquiring B acceleration data in each fixed window, sampling the data in each fixed window at intervals, calculating the difference value between the next item and the previous item of the sampled data, taking the median of the difference value, taking the absolute values of the three median of the windows corresponding to the three shafts, and adding the absolute values to obtain a sum value; thus, Y sum numbers are obtained, and the 0.75 quantile of the Y sum numbers is taken as the threshold D.

4. A method of monitoring an operating condition of a working machine in real time according to any one of claims 1 to 3, wherein: the fixed frequency is 100 hz.

5. The method for monitoring the operating state of the engineering machinery in real time according to claim 1, wherein the method comprises the following steps: and X is A and Y is B.

Technical Field

The invention relates to the technical field of engineering machinery management, in particular to a method for monitoring the running state of engineering machinery in real time.

Background

The engineering machine is mainly used for various construction projects, the working environment is various and severe, and in order to improve the management efficiency of the engineering machine and reduce the management cost of the engineering machine, the working time, the running state information and the like of the engineering machine need to be counted. At present, the engineering management field still uses an artificial checking mode to carry out statistics on the information, the workload is large, the statistical data has larger deviation, the efficiency is low, the situations of missing report and multiple reports are easy to generate, and even the problems of false report workload and working time are caused.

The Chinese invention patent 'method and system for monitoring the operation state of engineering machinery' (publication number: 108982898A, published: 12, 2018 and 11), provides a method for monitoring the operation state of engineering machinery, which processes vibration signals to obtain the rotating speed of an engine, and finally determines whether the current engineering is in an idle state according to the corresponding relation between the rotating speed of the engine, the number of cylinders and the idle state. In general, when the engine speed exceeds the idle speed, the working machine is considered to be in the working state. Similarly, whether the construction machine is in a stationary state or not can be judged according to the rotating speed. However, the number of cylinders of the engine needs to be considered each time, and the applicability of the model is not perfect.

Disclosure of Invention

The invention aims to provide a method for monitoring the running state of the engineering machinery in real time, which has the effect of monitoring the running state of any engineering machinery in real time with high efficiency and high precision.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a method for monitoring the operation state of engineering machinery in real time is characterized in that: acquiring angular speeds and accelerations on three axes of the engineering machinery at a fixed frequency by using a six-axis sensor;

for angular velocity, sequentially taking X fixed windows on each axis, collecting A angular velocity data in each fixed window, subtracting median of data in each fixed window from the data in each fixed window, taking absolute value of the obtained difference, and averaging the obtained absolute value; adding the three averages of the windows corresponding to the three axes into a sum value; thus, X sum values are obtained, 0.75 quantiles and 0.25 quantiles of the X sum values are taken, subtraction is carried out, the sum values are compared with a threshold value C, and when the sum values are larger than or equal to the threshold value C, the engineering machinery works;

for acceleration, sequentially taking Y fixed windows on each axis, collecting B acceleration data in each fixed window, sampling the data in each fixed window at intervals, calculating the difference value between the next item and the previous item for the sampled data, taking the median of the difference value, taking the absolute values of the three median of the windows corresponding to the three axes, and adding the absolute values to obtain a sum value; thus, Y sum numbers are obtained, 0.75 quantiles of the Y sum numbers are compared with a threshold D, and when the number of quantiles of the Y sum numbers is smaller than or equal to the threshold D, the engineering machinery is in a static state;

the non-working and non-static state is the idle state.

Preferably, the method for measuring the threshold C is: when the machine normally works, acquiring angular velocities on three axes of the engineering machine at a fixed frequency by using a six-axis sensor, sequentially acquiring X fixed windows on each axis, acquiring A angular velocity data in each fixed window, subtracting median of data in each fixed window by using the data in each fixed window, taking an absolute value of an obtained difference value, and averaging the obtained absolute values; adding the three averages of the windows corresponding to the three axes into a sum value; thus, X sum numbers are obtained, and the 0.75 quantile and the 0.25 quantile of the X sum numbers are subtracted to obtain the threshold C.

Preferably, the method for measuring the threshold value D is: when the machine normally works, acquiring the acceleration of the engineering machine on three shafts at a fixed frequency by using a six-shaft sensor, sequentially taking Y fixed windows on each shaft, acquiring B acceleration data in each fixed window, sampling the data in each fixed window at intervals, calculating the difference value between the next item and the previous item for the sampled data, taking the median of the difference value, taking the absolute values of the three median of the windows corresponding to the three shafts, and adding the absolute values into a sum value; thus, Y sum numbers are obtained, and the 0.75 quantile of the Y sum numbers is taken as the threshold D.

Preferably, the fixed frequency is 100 hz.

Preferably, X a ═ Y ═ B.

By adopting the technical scheme, the angular velocity and the acceleration of the three shafts of the engineering machinery are collected and processed, and then are compared with the threshold values of the angular velocity and the acceleration when the machinery normally works, so that the running state of the machinery can be effectively monitored, the efficiency is high compared with manual checking, the result accuracy is high, the situations of missing report and multiple report can be reduced, and the problems of virtual report workload and working time length are avoided.

Detailed Description

It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.