阅读说明：本技术 基于云技术的输送带纵向撕裂远程监测方法 (Cloud technology-based remote monitoring method for longitudinal tear of conveying belt ) 是由 李现国 宋金水 凌月 于 2020-07-15 设计创作，主要内容包括：本发明针对输送带易发生纵向撕裂的工程背景,基于云技术和线激光技术,结合机器视觉和ARM技术,提出了一种适用于多点监测的输送带纵向撕裂远程监测方法。首先通过“一”字线激光器向输送带下表面投射激光条纹；然后利用嵌入式处理终端控制面阵CMOS摄像头采集包含激光条纹的输送带下表面图像并通过以太网传输到远端的PC机；最后PC机监测软件显示监测图像并将其储存到云服务器供手机监测软件读取显示。当监测到输送带发生纵向撕裂故障时,现场的嵌入式处理终端、远端的PC机监测软件、手机监测软件将同时发出报警信息。本发明方法及系统能够有效用于工业中输送带复杂的工作环境,实现了现场报警、PC机监测软件报警和手机监测软件报警三位一体的纵向撕裂远程监控,具有综合布线少、扩展能力高、实时监测、使用便捷、适于远程多点监测等特点。(The invention provides a remote monitoring method for longitudinal tearing of a conveyor belt, which is suitable for multipoint monitoring and is based on a cloud technology and a line laser technology and combines a machine vision technology and an ARM technology aiming at an engineering background that the conveyor belt is easy to tear longitudinally. Firstly, projecting laser stripes to the lower surface of a conveying belt through a linear laser; then, an embedded processing terminal is used for controlling an area array CMOS camera to collect the lower surface image of the conveyer belt containing the laser stripes and transmit the lower surface image to a remote PC through Ethernet; and finally, the monitoring image is displayed by the PC monitoring software and stored in the cloud server for the mobile phone monitoring software to read and display. When the longitudinal tearing fault of the conveying belt is monitored, the on-site embedded processing terminal, the remote PC monitoring software and the mobile phone monitoring software send alarm information at the same time. The method and the system can be effectively used in the complex working environment of the conveyor belt in the industry, realize the longitudinal tearing remote monitoring of the integration of on-site alarm, PC monitoring software alarm and mobile phone monitoring software alarm, and have the characteristics of less comprehensive wiring, high expansion capability, real-time monitoring, convenient use, suitability for remote multi-point monitoring and the like.)

1. A remote monitoring method for longitudinal tearing of a conveyor belt based on a cloud technology comprises an image acquisition and processing method, an image file real-time transmission method and a three-in-one alarm method, and is characterized in that:

the image acquisition processing method comprises the steps of projecting laser stripes to the lower surface of a conveying belt by using a linear laser, acquiring images of the lower surface of the conveying belt containing the laser stripes by using an embedded processing terminal to control an area array camera, and detecting a distortion value to realize longitudinal tearing judgment;

the image file real-time transmission method comprises the steps that FTP and SFTP file transmission protocols are used for transmitting images, a cloud server is used for storing the images at the cloud end to serve as an image source of mobile phone monitoring software, a VSFTPD is used for building the FTP server at an embedded processing terminal, PC monitoring software calls an FTP file receiving script to achieve real-time transmission of remote files between the embedded processing terminal and a PC, the PC monitoring software calls an SFTP script to achieve real-time transmission of the remote files between the embedded processing terminal and the cloud server, and the mobile phone monitoring software analyzes and displays the image files on the cloud server in real time;

the three-in-one alarm method comprises the steps of on-site alarm of an embedded processing terminal, remote alarm of PC monitoring software and alarm of mobile phone monitoring software.

2. The method for transmitting image files in real time as claimed in claim 1, wherein the real-time monitoring image of the conveyor belt is transmitted to the cloud server, and the mobile phone monitoring software inquires about the condition of the conveyor belt at any time and any place.

3. The three-in-one alarm method as claimed in claim 1, wherein each monitoring point implements embedded processing terminal on-site alarm, PC monitoring software remote alarm and mobile phone monitoring software alarm.

Technical Field

The invention belongs to the field of longitudinal tearing detection of a conveying belt, and particularly relates to a remote monitoring method for longitudinal tearing of a conveying belt based on a cloud technology.

Background

The longitudinal tearing of the conveying belt seriously affects the safety production in the fields of coal, mines, ports, metallurgy, electric power and the like, and the longitudinal tearing has burstiness and concealment, so the monitoring of the longitudinal tearing has to be good in real-time performance and high in accuracy, and the requirement is still a technical problem to meet the requirement.

At present, the longitudinal tearing detection method of the conveyer belt has a plurality of methods. The traditional detection method mainly detects the states of material leakage, rubber falling and the like of the conveying belt through sensors such as pressure, electromagnetism and the like, judges longitudinal tearing faults and has the defects of poor accuracy and reliability, easiness in damage and the like.

Disclosure of Invention

The invention aims to design a method for realizing remote multi-point online monitoring of longitudinal tearing of a conveying belt. The problem that the existing conveyor belt longitudinal tearing monitoring system needs to arrange a large amount of manpower to watch on each monitoring point, only has accident site alarm or PC (personal computer) reminding, and alarm information and image information can only be transmitted in a local area network is solved. The PC monitoring software and the mobile phone monitoring software can update the state information of the conveying belt in real time, improve the image processing efficiency and the monitoring real-time performance, and realize the remote monitoring of longitudinal tearing by combining on-site alarming, PC monitoring software alarming and mobile phone monitoring software alarming.

The invention researches a remote monitoring method for longitudinal tearing of a conveyor belt based on a cloud technology, which comprises an image acquisition and processing method, an image file real-time transmission method and a three-in-one alarm method, and is characterized in that:

the image acquisition processing method comprises the steps of projecting laser stripes to the lower surface of a conveying belt by using a linear laser, acquiring images of the lower surface of the conveying belt containing the laser stripes by using an embedded processing terminal to control an area array camera, and detecting a distortion value to realize longitudinal tearing judgment;

the image file real-time transmission method comprises the steps that FTP and SFTP file transmission protocols are used for transmitting images, a cloud server is used for storing the images at the cloud end to serve as an image source of mobile phone monitoring software, a VSFTPD is used for building the FTP server at an embedded processing terminal, PC monitoring software calls an FTP file receiving script to achieve remote file real-time transmission between the embedded processing terminal and a PC, the PC monitoring software calls an SFTP script to achieve remote file real-time transmission between the embedded processing terminal and the cloud server, the mobile phone monitoring software accesses the cloud server through the web server function to obtain image information in real time, and the image files are analyzed and displayed;

the three-in-one alarm method comprises the steps of on-site alarm of an embedded processing terminal, remote alarm of PC monitoring software and alarm of mobile phone monitoring software.

The image file real-time transmission method is characterized in that real-time monitoring images of a conveying belt are transmitted to a cloud server, and mobile phone monitoring software inquires the condition of the conveying belt at any time and any place.

The three-in-one alarm method is characterized in that each monitoring point realizes the on-site alarm of an embedded processing terminal, the remote alarm of PC monitoring software and the alarm of mobile phone monitoring software.

The method has the beneficial effects that: (1) the on-site alarm, the PC monitoring software alarm and the mobile phone monitoring software alarm are realized, the state of the conveying belt can be checked at any time and any place, the alarm is given in time, and the loss caused by the longitudinal tearing of the conveying belt is reduced; (2) the embedded processing terminal can accurately detect and calibrate longitudinal tearing fault points, and simultaneously sends an alarm signal and image information to the PC to send out voice alarm sound on site; (3) the PC monitoring software can display the monitoring image of the conveying belt in real time and give an alarm by popup; (4) when the conveyer belt is torn, the mobile phone monitoring software immediately sends an alarm short message to the staff, and sends an application notice to remind the user, so that the user can check the state information of the conveyer belt at any time and any place by using the mobile phone monitoring software, and the state of the conveyer belt can be marked after maintenance or field inspection for other staff to refer.

Drawings

FIG. 1 is an overall scheme of the process of the present invention.

Fig. 2 is a screenshot of the mobile phone monitoring software of the method of the present invention.

FIG. 3 is a screenshot of PC monitoring software for the method of the present invention.

FIG. 4 is a graph of the belt longitudinal tear monitoring results of the method of the present invention.

Fig. 5 is a mobile phone monitoring software alarm screenshot of the method of the present invention.

FIG. 6 is a screenshot of a PC monitor software alarm for the method of the present invention.

Detailed Description

Specific embodiments of the present disclosure are described below with reference to the accompanying drawings.

The overall flow of the process of the invention is shown in FIG. 1.

The invention relates to a cloud technology-based remote monitoring method for longitudinal tear of a conveyor belt, which comprises the following operation steps:

step 1, a 'one' word line laser projects a 'one' word line laser stripe to the lower surface of a conveyer belt, an embedded processing terminal taking an I.MX6ULL processor as a core is used for controlling an area array CMOS camera to collect images of the lower surface of the conveyer belt containing the laser stripe, each collected frame of image is processed and analyzed, a laser stripe framework is extracted, and the distortion condition of the laser stripe framework is detected;

and 2, the embedded terminal processes the distortion value and transmits image information to the PC. When the obtained distortion value is larger than the set distortion threshold value, the longitudinal tearing of the conveying belt is indicated, the embedded processing terminal drives the alarm to give an alarm in a voice mode, the image is named as 'equipment number + time + tearing', and the image information is transmitted to the PC through the FTP protocol and stored locally. When the obtained distortion value is smaller than the set distortion threshold value, the conveyer belt works normally, the embedded processing terminal names the image as 'equipment number + time + normal', and the image information is transmitted to the PC through the FTP protocol and is stored locally;

and 3, analyzing the image file name by the PC, updating the image information in real time, and obtaining whether the conveying belt is longitudinally torn or not to determine whether to give an alarm or not. Displaying the latest picture according to the time in the naming, and sending alarm information to remind an operator on duty to check if two bits are 'torn' after the image file is named after analysis; if the state is normal, normal work is prompted.

And 4, the PC sends the received image information to the cloud server by means of an SFTP protocol, and stores the image information to a Webapps file under Tomcat in the server for the access of mobile phone monitoring software.

And 5, the mobile phone monitoring software accesses the cloud server to acquire the image information in real time by means of the web server function provided by Tomcat. The mobile phone monitoring software analyzes the name of the image file, displays the latest image according to the time information in the name, and sends out an alarm notice to remind a mobile phone user to check if the last two bits of the name of the image file are 'torn'. The telephone is also provided with a function of dialing the telephone of the staff by one key and informing the staff by short message. After the user finishes the check, the check condition can be registered on the application, and remark information is left to remind other workers of paying attention.

The detection result of the method is shown in fig. 4, the method can accurately detect the longitudinal tearing fault point, the PC monitoring software and the mobile phone monitoring software can display image information and alarm signals, when a longitudinal tearing accident of the conveying belt occurs, the embedded processing terminal sends out a voice alarm on site, the PC monitoring software alarms through the popup window, the mobile phone monitoring software sends out an application reminding alarm, the remote monitoring of the longitudinal tearing of the three-in-one body of site alarm, PC monitoring software alarm and mobile phone monitoring software alarm is realized, and the method has the characteristics of less comprehensive wiring, high expansion capacity, real-time monitoring, convenience in use, suitability for remote multi-point monitoring and the like.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the true spirit and scope of the invention.