CN111458038A - Infrared monitoring method, device and system based on revolving body - Google Patents

Abstract

The embodiment of the present invention discloses an infrared monitoring method, device and system based on a rotating body, which acquires infrared images of the surface of the rotating body in real time to measure the temperature of the rotating body, and splices multiple frames of infrared images of the surface of the rotating body within a selected period of time The whole surface unfolding image of the revolving body is obtained, and then the revolving body is monitored and early warning by presenting the surface unfolding image of the revolving body, which is convenient to accurately locate the specific location of the thermal abnormal point of the revolving body to troubleshoot the fault.

Description

Infrared monitoring method, device and system based on rotating body

technical field

Embodiments of the present invention relate to infrared monitoring technology, and in particular, to an infrared monitoring method, device and system based on a rotating body.

Background technique

At present, the infrared monitoring temperature early warning technology is more and more widely used. It uses the infrared radiation information of the infrared detector to generate the infrared radiation information of the rotating object. When the data in the infrared image exceeds the standard, the alarm will be triggered to give an alarm. For example, rotary kilns use this infrared monitoring temperature warning system to prevent safety accidents.

The so-called rotary kiln refers to a rotary calcining kiln. The operation involves processes such as gas flow, fuel combustion, heat transfer and material movement. When working, it is necessary to ensure that the fuel can be fully burned, and the heat of fuel combustion can be effectively transferred to the material. A series of physical and chemical changes occur, and finally the finished clinker is formed. The barrel of the rotary kiln is rolled from steel plates, and the barrel is lined with refractory materials with a thickness of 150~250mm. The kiln body of the rotary kiln is a large horizontal cylinder, and the kiln body continues to rotate in one direction during operation. Due to the high working temperature in the kiln body and the movement of materials in the kiln body, the lining refractory material is easy to fall off, which may cause the high temperature inside the kiln to burn through the entire kiln body, resulting in huge economic losses. Surface temperature is monitored in real time.

The traditional infrared monitoring temperature early warning system has certain limitations when applied to this kind of rotary kiln. The main manifestation is that infrared thermal imaging can only monitor one side of the kiln body facing the thermal imager, and cannot show the temperature on the back of the kiln body at the same time. Therefore, the staff of the monitoring room cannot find the abnormal situation on the back in time, and cannot visually see the temperature distribution of the entire kiln body surface. When the kiln body temperature is abnormal, they cannot accurately locate the abnormal kiln body position.

Similar problems exist in other applications of the rotating body, so it is necessary to improve the infrared monitoring temperature early warning technology based on this rotating body.

SUMMARY OF THE INVENTION

Aiming at the defects in the prior art, the purpose of the embodiments of the present invention is to provide an infrared monitoring method, device and system based on a rotating body, so as to present a panoramic view of the rotating body monitoring to locate the thermal fault location.

In order to solve the above technical problems, the embodiment of the present invention adopts the following technical solutions:

An embodiment of the present invention provides an infrared monitoring method based on a rotating body, comprising the following steps:

Real-time acquisition of infrared images of the surface of the rotating body to measure the temperature of the rotating body;

Splicing multiple frames of infrared images of the surface of the revolving body in the selected period to obtain the unfolded image of the surface of the revolving body;

Present the unfolded image of the surface of the revolving body to monitor and warn the revolving body.

Further, the step of splicing multiple frames of infrared images in the selected time period to obtain the unfolded image of the surface of the revolving body includes: determining the selected time period according to the cycle of the revolving body, and splicing the infrared images of the surface of the revolving body of multiple frames in the cycle of the revolving body. , to get the unwrapped image of the surface of the gyroscope.

Further, the step of determining the selected period according to the period of the rotary body includes: measuring the rotation angle of the rotary body, and when the rotation angle of the rotary body reaches a preset value, determine that the rotation time of the rotary body reaches the period of the rotary body, and determine the corresponding selection period. fixed period.

Further, the step of determining the selected time period according to the period of the rotary body includes: obtaining the rotation speed of the rotary body and the rotation time of the rotary body, calculating the period of the rotary body according to the rotation speed of the rotary body and the rotation time of the rotary body, and determining the corresponding selection period. fixed period.

Further, the step of splicing multiple frames of infrared images of the surface of the revolving body in the selected time period to obtain the unfolded image of the surface of the revolving body includes: dividing the revolving body into equal parts and defining a starting position, when the revolving body is rotated to each equal position. , to capture and edit the infrared image of the surface of the revolving body, and then splicing the captured and edited images to the unfolding position of the revolving body to obtain the unfolding image of the surface of the revolving body.

Further, the step of splicing multiple frames of infrared images of the surface of the rotating body in the selected time period to obtain the expanded image of the surface of the rotating body includes: cutting and stretching each frame of infrared images of the surface of the rotating body into a rectangle, and then cutting each frame of the infrared image of the surface of the rotating body into a rectangle. The image that is cut and stretched to a rectangle is spliced to the unfolded position of the revolving body to obtain an unfolded image of the surface of the revolving body.

Further, the step of splicing multiple frames of infrared images of the surface of the rotating body in the selected time period to obtain the expanded image of the surface of the rotating body includes: when the rotating body rotates one revolution, the multi-frame surface of the rotating body in the rotation period of the corresponding rotating body is combined. The infrared images are stitched into an unfolded image of the surface of the revolving body.

Further, the expanded image of the surface of the rotating body includes temperature information, so that the temperature of the rotating body is analyzed according to the expanded image of the surface of the rotating body.

On this basis, an embodiment of the present invention also provides an infrared monitoring device based on a rotating body, including:

The image acquisition module is used to acquire the infrared image of the surface of the revolving body in real time to measure the temperature of the revolving body;

The image expansion module is used for splicing multiple frames of infrared images of the surface of the revolving body in a selected period to obtain an expanded image of the surface of the revolving body;

The image presentation module is used to present the unfolded image of the surface of the revolving body to monitor and warn the revolving body.

In addition, the implementation of the present invention also provides an infrared monitoring device based on a rotating body, comprising:

Thermal imager, used to monitor the infrared radiation information of the rotating body and generate infrared images of the surface of the rotating body to measure the temperature of the rotating body;

The controller is used for acquiring the infrared image of the surface of the revolving body, splicing multiple frames of infrared images of the surface of the revolving body in a selected period to obtain the unfolded image of the surface of the revolving body, and presenting the unfolding image of the surface of the revolving body to monitor and warn the revolving body, so as to When there is thermal abnormality in the rotating body, generate and output an alarm trigger signal;

The alarm is used to alarm according to the alarm trigger signal.

Compared with the prior art, in the embodiment of the present invention, the partial infrared images of the surface of the revolving body are stitched together to obtain the unfolded image of the entire surface of the revolving body, so that the position of the thermal anomaly on the unfolding image of the surface of the revolving body can be clearly presented, which is helpful for the For quick identification and troubleshooting of equipment failures.

Description of drawings

1 is a flowchart of an infrared monitoring method based on a rotary body according to an embodiment of the present invention;

FIG. 2 is a block diagram of an infrared monitoring device based on a rotating body according to Embodiment 2 of the present invention;

FIG. 3 is a block diagram of an infrared monitoring system based on a rotating body according to Embodiment 3 of the present invention;

Fig. 4 is the application example framework diagram of applying the infrared monitoring system based on rotary body of the present invention;

FIG. 5 is a working flow chart of an application example of the infrared monitoring system based on a rotary body of the present invention.

Detailed ways

The following describes in detail with reference to the accompanying drawings and specific embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present invention. However, the embodiments of the present invention can be implemented in many other ways that are different from those described herein, and those skilled in the art can make similar promotions without violating the connotations of the embodiments of the present invention. Therefore, the embodiments of the present invention are not subject to the specific details disclosed below. Example limitations.

Referring to FIG. 1 , a flowchart of an infrared monitoring method based on a rotating body according to an embodiment of the present invention is shown. The infrared monitoring method based on the rotating body splices the local infrared images of the surface of the rotating body into an unfolded image of the entire surface of the rotating body, which is convenient for clearly presenting and locating the position of the thermal anomaly on the surface of the rotating body. Troubleshoot the device as described below.

S110 , acquiring an infrared image of the surface of the revolving body in real time to measure the temperature of the revolving body.

In this step, the infrared image of the surface of the revolving body is acquired in real time to measure the temperature of the revolving body (here, the image can generally refer to a video or a picture). The infrared image is generated by a thermal imager, which can provide sufficient temperature information of the rotating body, which can be conveniently used for temperature measurement of the rotating body. When the infrared image shows an abnormal temperature in a certain area, it can be further alarmed by the early warning system.

In this embodiment, the infrared image file generated by the thermal imager can add temperature data for each pixel, for example, in the format of file header definition + image data + temperature data, and then can be read and presented at the same time according to the file header definition Image data and temperature data, so that the contour and temperature data of the object in the revolving body can be more clearly presented. It is understandable that some pixel image data and temperature data in the infrared image file of the surface of the revolving body can be obtained by processing methods such as interpolation of adjacent pixels, which will not be described here.

S120, stitching multiple frames of infrared images of the surface of the revolving body in the selected time period to obtain an expanded image of the surface of the revolving body.

In this step, the partial infrared images of the surface of the rotating body are stitched into an expanded image of the entire surface of the rotating body, and the expanded surface image of the rotating body contains temperature information, so that the temperature of the rotating body can be analyzed according to the expanded image of the surface of the rotating body, so that it can be clearly presented And locate the position of thermal anomaly on the unwrapped image of the surface of the revolving body.

In this embodiment, according to each rotation of the revolving body, multiple frames of infrared images of the surface of the revolving body within the rotation period of the corresponding revolving body are spliced into an expanded image of the surface of the revolving body. When the revolving body starts another rotation cycle from the initial position, another image of the surface of the revolving body is correspondingly spliced. In this way, over and over again, a continuous video image of the entire revolving body is obtained.

Specifically, when splicing, the revolving body can be divided into equal parts and the starting positions can be defined. When the revolving body is rotated to each equal position, the infrared images of the surface of the revolving body can be captured and edited, and then the captured and edited images can be stitched together. Go to the unfolding position of the revolving body to get the unfolding image of the surface of the revolving body. In particular, since the thermal imager has a shooting angle of view relative to the rotating body, it has a certain perspective effect, and the pixel position on the generated image may be deformed from the original position, that is, the object in each frame of the image in the selected period may be Deformation exists. To this end, each frame of the infrared image of the surface of the revolving body can be cut and stretched into a rectangle, and then the images cut and stretched into a rectangle can be spliced to the unfolding position of the revolving body to obtain the unfolded image of the surface of the revolving body. Wherein, when each pixel point of the revolving body is processed by shearing and stretching, it can be scaled according to the corresponding geometric relationship known to those skilled in the art, and will not be described further.

Generally, the selected time period can be determined according to the period of the rotating body, and then multiple frames of infrared images of the surface of the rotating body in the period of the rotating body are spliced to obtain an expanded image of the surface of the rotating body. Wherein, the method of determining the selected period by the period of the rotating body may be: measuring the rotation angle of the rotating body, and when the rotating angle of the rotating body reaches a preset value, determine that the rotating time of the rotating body reaches the period of the rotating body, and determine the corresponding selected period; Alternatively, the rotation speed of the rotary body and the rotation time of the rotary body are obtained, the period of the rotary body is calculated according to the rotation speed of the rotary body and the rotation time of the rotary body, and determined as a corresponding selected time period. In this way, after the corresponding selected period is selected, images of multiple frames can be captured from the video of the corresponding selected period, and then spliced into an entire expanded image of the surface of the revolving body according to certain rules.

Thereby, the developed image of the surface of the rotating body is obtained in the above-described manner, and the developed image of the surface of the rotating body contains temperature information, so that the temperature analysis of the rotating body is performed according to the developed image of the surface of the rotating body. If there is a thermal anomaly, the unfolded image of the surface of the revolving body can clearly show its specific location.

S130 , presenting an expanded image of the surface of the revolving body to monitor and warn the revolving body.

This step presents the unfolded image of the surface of the revolving body, and the revolving body gives an early warning. Through the temperature data of the unfolded image on the surface of the revolving body, it is possible to quickly monitor whether there is an object over-temperature, and an alarm can be issued when there is an over-temperature, and the specific location of the abnormal point can be quickly located.

In this embodiment, the monitoring and early warning of the revolving body can be specifically carried out on-site alarm by means of sound, light, vibration, etc., or the relevant data can be uploaded to the upper computer (such as a monitoring center, cloud platform, etc.) for remote monitoring, and when the occurrence of Take necessary measures in an emergency. For this point, reference may be made to the prior art, and details are not repeated here.

The dual-band monitoring method based on infrared and visible light has been described in detail above, and the corresponding infrared monitoring device and system will be further described below. For the sake of simplicity, the descriptions of the same contents in the corresponding methods, apparatuses, and systems are not repeated in the description of the embodiments of the present invention. If they are related to each other, please refer to each other according to the context.

Referring to FIG. 2 , a block diagram of an infrared monitoring device based on a rotary body according to an embodiment of the present invention is shown. The infrared monitoring device includes an image acquisition module 210 , an image expansion module 220 , and an image presentation module 230 , which can be set independently or integrated into the same controller 200 , and the signal connections and functions of each part are as follows.

As shown in FIG. 2 , the image acquisition module 210 can be used to acquire infrared images of the surface of the revolving body in real time to measure the temperature of the revolving body; the image expansion module 220 can be used to stitch multiple frames of infrared images of the surface of the revolving body in a selected period to obtain The unfolded image of the surface of the revolving body; the image presentation module 230 can be used to present the unfolded image of the surface of the revolving body to monitor and warn the revolving body, and when there is a thermal abnormal point in the revolving body, an alarm can be triggered to give an alarm.

Referring to FIG. 3 , a block diagram of an infrared monitoring system based on a rotary body according to an embodiment of the present invention is shown. This Figure 4 can alarm when there is an abnormal point of overheating in the revolving body, as described below.

As shown in FIG. 3 , the infrared monitoring system is mainly composed of a thermal imager 100 , a controller 200 and an alarm 300 , which are connected in sequence. The thermal imager 100 is mainly used to monitor the infrared radiation information of the rotating body and generate infrared images of the surface of the rotating body to measure the temperature of the rotating body. The controller 200 is used for acquiring the infrared image of the surface of the revolving body, splicing multiple frames of infrared images of the surface of the revolving body in a selected time period to obtain the expanded image of the surface of the rotating body, and presenting the expanded image of the surface of the rotating body to monitor and warn the rotating body, so as to When there is thermal abnormality in the revolving body, an alarm trigger signal is generated and output; after the alarm device 300 receives the alarm trigger signal, it can be used to alarm according to the alarm trigger signal, and the specific alarm form can be one of sound, light, vibration, etc. or its combination.

In addition, the controller 200 can also be connected to the host computer 400 (such as a monitoring center, cloud platform, etc.) through a communication link, so as to upload relevant data to the host computer for remote monitoring. When there is an over-temperature object in the monitored revolving body, Necessary emergency measures can be taken, and no further explanation will be given.

In the above embodiment, the temperature of the rotating body is measured by acquiring the infrared image of the surface of the rotating body in real time, and splicing multiple frames of infrared images of the surface of the rotating body in a selected period to obtain the entire surface of the rotating body. The image is used for monitoring and early warning of the rotating body, which is convenient for accurately locating the specific location of the thermal abnormal point of the rotating body to troubleshoot the fault.

It can be understood that, the infrared image of the surface of the rotating body in the above embodiment is a pseudo-color image, and there is a problem that the details of the image are not clear enough. To this end, this embodiment can be further improved by fusing visible light images. Specifically, the infrared image of the corresponding frame is captured and then fused with the visible light image of the corresponding frame, and then each frame of the fusion image is spliced into a fused unrolled image of the revolving body. Alternatively, the corresponding unrolled infrared images of the revolving body and the unwrapped visible light images of the revolving body may be spliced respectively, and then the spliced unwrapped infrared images and the unwrapped visible light images of the revolving body are fused to obtain a fused unwrapped image of the revolving body.

When performing the above fusion, one of the infrared image and the visible light image can be used as the reference image, the other image can be used as the image to be registered, and the image to be registered and the reference image can be fused to obtain a fusion image. Among them, in order to ensure the positional registration of the image to be registered and the reference image, a preset registration mark (such as a rectangular frame, a cross star, etc.) may be set on the monitoring target in advance. In this way, the infrared image and the visible light image will have the registration mark, so the to-be-registered image can be registered with the reference image according to the image registration mark coordinates in the to-be-registered image and the registration mark coordinates in the reference image. achieve integration. When the image registration mark coordinates in the image to be registered are aligned with the registration mark coordinates in the reference image, it can be determined that the two are registered; otherwise, the registration process needs to be continued. In particular, after the infrared image and the visible light image are registered, the fusion image can be further smoothed and filtered, that is, the clutter in the edge information of the fusion image can be removed, so as to improve the quality of the fusion image.

The details of the unfolded image of the revolving body fused by the above method are clearer, which facilitates better positioning of the thermal abnormality fault location.

The infrared monitoring system based on the rotary body in the above embodiment can be better used for early warning of the temperature of the rotary kiln, and the specific introduction is as follows.

Referring to FIG. 4 , an application example architecture diagram of the infrared monitoring system based on a rotary body of the present invention is shown. In this application example, two sets of kiln body rotation sensors are installed on the kiln body, and an expansion module is added to the early warning monitoring system of the rotary kiln, which monitors the starting position and real-time position of the kiln body rotation sensor in real time. When the kiln body rotates to a certain angle, the sensor signal is triggered. The system will stitch the screenshots of the real-time thermal imager, and the specific function realization block diagram is shown in Figure 4.

Referring to FIG. 5 , it is a work flow of an application example of applying the infrared monitoring system based on a rotary body of the present invention. When the system is working, the rotary kiln cylinder is evenly divided into several equal parts, and the starting position is defined; during the rotation of the kiln body, the thermal imager takes pictures of the kiln body, and then regularly captures the image of the thermal imager, Editing; when the kiln body rotates once, merge all the edited pictures into one image of the kiln body for one week; when it goes to the starting position again, merge it again. Among them, since the spliced images contain temperature information, the operation can realize temperature analysis on the spliced images, and can further locate the specific location of the thermal fault of the kiln body according to the position of the kiln body position sensor.

As shown in Figure 4 and Figure 5, the rotary kiln early warning monitoring system installs two sets of rotation sensors on the kiln body. When the kiln body rotates, the sensor signal is triggered, and the system starts to take screenshots and splicing. The expansion module of the rotary kiln early warning monitoring system divides the kiln body into several equal parts by default. When the kiln body rotates to a certain angle (calculated according to the number of parts), a picture is taken, and the picture is cut and pulled through the angle. Processing (stretching the shape of the cylinder to a rectangle), and splicing the processed pictures to the corresponding position of the kiln body expansion diagram; when the kiln body temperature is alarmed, the system automatically saves the pictures after the rotary kiln expansion and splicing to realize the splicing. The offline analysis of the temperature of the picture and the export report can clearly see the coordinate position of the alarm point, which is convenient for the kiln body maintenance personnel to determine the location of the thermal fault of the rotary kiln refractory material, and enter the kiln body to check the working condition of the rotary kiln refractory material.

In the system of the embodiment of the present invention, the data processing and communication functions of the controller 200 can be further enhanced, which can further process the data obtained by the acquisition terminal (such as a thermal imager, an infrared detector, etc.), and upload it to the upper computer 400, for remote monitoring.

Wherein, the data acquired by the acquisition end (such as thermal imager, infrared detector, etc.) is specifically a picture file or a video file, etc. The controller 200 can edit the picture file or video file locally, and by editing these original picture files or video files Add temperature data to the file and get modified data. After the original data and the modified data are packaged and processed, the source data package and the modified data package are obtained.

The host computer 400 may specifically be a data center, specifically a distributed server cluster, which may be provided with several cloud servers, central servers and user servers, and the controller 200 may upload all data to the corresponding server according to a preset upload strategy.

In order to ensure reliable communication and data security, the embodiment of the present invention further optimizes the data transmission strategy, which is specifically described as follows.

(1) Communication link for data transmission

After the controller 200 obtains the relevant data locally, it needs to upload the data to the data center. The data center has multiple servers, such as cloud servers, central servers, and user servers. These servers can be located in the same place or in different places, so there are multiple access points connected to the servers. In order to improve the transmission efficiency of data, it is necessary to select a link based on the communication information between the local and the access point, and between the access point and the corresponding server. For example, if a link is simply selected, that is, when the access point is directly transmitted to the server, if the link between the access point and the server is suddenly abnormal, data loss will occur. In view of this, the embodiments of the present invention optimize the data transmission link between the local and the access point, and between the access point and the server, as described below.

In this embodiment, the data of the collection end (such as a thermal imager, an infrared detector, etc.) is packaged into data packets, and uploaded to the data center through the corresponding access point of the controller 200, including: determining whether the controller 200 is connected to multiple Network status information between access points, and network quality information of multiple access points and corresponding servers in the server cluster located in the data center, and multiple links are selected according to the network status information and the network quality information , which transmits the packets to the data center.

Specifically, selecting multiple links according to the network state information and the network quality information, and transmitting the data packet to the data center specifically includes: acquiring the connection between the local device (here, the controller 200 ) and multiple access points According to the network status information, the transmission rate of the data packets and the packet loss rate are determined to determine the reliability of transmission, and the two access points with the highest reliability are selected as transit access points. Wherein, the determination of the reliability of the above-mentioned transmission is not limited to relying on the transmission rate and the packet loss rate, but may also include interference noise, signal strength, etc.; and the above-mentioned reliability can be quantified in the form of a weight value; the above-mentioned values obtained will be passed through The independent link is transmitted to the corresponding server in the data center; at the same time, the weight value corresponding to the transit access point is added to an additional packet header.

After the two transit access points receive the data packets, they calculate the network quality information and transit quality information between them and each server respectively, and determine the data transmission path according to the network quality information and the transit quality information, so as to The data packet is directly sent to the corresponding server or the data packet is sent to the corresponding server through the adjacent access point; wherein, the transit quality information is based on the communication link between the transit access point and its adjacent access point. Reliability (determined according to the transmission rate and packet loss rate), and the network quality information between its adjacent access points and each server; the network quality information is determined according to the current access volume and access permission of the server , The overload probability estimated from historical information and the reliability of the communication link are determined. The reliability of the above-mentioned communication link can be calculated in the same way as the reliability of transmission, or it can be calculated in a different way to obtain the value of the reliability index; the network quality information and the transit quality information can also be numerically calculated. Perform quantitative representation; after the above values are obtained, they will be transmitted to each server in the data center through independent links; the independent transmission links involved above are different from the redundant links used in data packet transmission. road. At the same time, the transit quality information value corresponding to the access point participating in the forwarding is added to the additional header.

In an optional embodiment, after receiving the value corresponding to each access point, the corresponding server (mainly a cloud server) of the data center determines the transfer access point and the corresponding value of the forwarding access point according to the link selection policy. Transit quality information value; when the server in the data center receives the data packet, it checks the data packet according to the above value to determine the accuracy of the data packet; since at least two servers in the data center receive the data packet, therefore, After the two servers respectively verify the accuracy of the data packets, they compare the received data packets again to verify the integrity of the data in the data packets. When the verification is inaccurate or incomplete, the local device is notified to perform retransmission; wherein, the redundant link used in the retransmission process is completely different from the original redundant link, that is, there is no intersection.

When setting the network quality information, the current access volume of the server, the number of access permissions, the overload probability estimated from the historical information, and the reliability of the communication link are considered, so the server load can be estimated based on the historical information. information, which effectively improves the load balancing between servers in different regions.

(2) Communication methods for data transmission

The embodiment of the present invention further optimizes the data uploading strategy among the cloud server, the central server and the user server, specifically selecting the uploading strategy according to the maximum temperature value T and target density P of the monitoring object. Here, the monitoring object may be a specific high-temperature object, a moving object, a rotating body, etc., depending on the application.

Without loss of generality, the following describes the image file as an example (the video file is processed similarly), and describes the data upload between the cloud transmission server and the central server. For data upload problems between the cloud transmission server and the user server, and between the central server and the user server, you can also refer to the handling.

After the cloud server receives the picture file (source data package or modified data package), it can obtain the highest temperature value T in the picture, and the target density P of the monitoring object in the environment where the picture is located. The specific value can be set according to actual needs and Change; select the upload strategy according to the maximum temperature value T and the target density P, and upload the picture to the central server according to the upload strategy. Here, the central server preferably uses a hierarchical structure (such as being set as a first-level center server, a second-level center server, a third-level center server, and a fourth-level center server from top to bottom), wherein the upper-level center server can realize the lower-level center server. management. After receiving the picture data, the lower-level central server uploads the picture to the upper-level central server according to a specific strategy. Various communication methods are supported between central servers at all levels and cloud servers. In addition to supporting various existing communication methods, central servers at all levels also have dedicated secure channels for specific data transmission.

时，确定云服务器与各级中心服务器之间稳定性最高的通信方式，然后 基于确定的通信方式将图片数据同时发送至各个中心服务器，其中各个中心服务器与云服 务器之间的通信方式可以不同，也可以相同。此处，不同目标温度的最高值有所不同，当高 于某个值时，处于危险状态。因此，对于高于标准值的温度设置一阈值以识别是否处于高危 状态，此状态下不论目标密度如何，都需要采用最稳定的方式进行上传，由此提高数据的稳 定性，便于各级中心服务器针对接收到的数据进行应急处理，并且能够及时的发现各个区 域的异常情况，并根据相应的预案作出应急措施，提高各级中心服务器处理异常事务的一 致性，提高应急效率。 when

At the same time, determine the communication mode with the highest stability between the cloud server and the central servers at all levels, and then send the picture data to each central server at the same time based on the determined communication mode. The communication mode between each central server and the cloud server can be different. can also be the same. Here, the maximum value of different target temperature is different, when it is higher than a certain value, it is in a dangerous state. Therefore, a threshold is set for the temperature higher than the standard value to identify whether it is in a high-risk state. In this state, regardless of the target density, the most stable method needs to be used to upload, thereby improving the stability of the data and facilitating the central servers at all levels. Emergency processing is carried out for the received data, and abnormal situations in various regions can be detected in time, and emergency measures are taken according to the corresponding plans to improve the consistency of central servers at all levels in handling abnormal transactions and improve emergency efficiency.

，

时，计算图片的权重W，当

时，确定云服务器 与一级中心服务器之间的通信方式，选择安全性最高的通信方式进行图片数据上传；确定 云服务器与二级、三级和四级中心服务器之间的通信方式，选择稳定性最高的通信方式进 行图片上传；当

时，确定云服务器与一级和二级中心服务器之间的通信方式，选 择安全性最高的通信方式进行图片数据上传；确定云服务器与三级和四级中心服务器之间 的通信方式，选择稳定性最高的通信方式进行图片数据上传。此处，

为预设的权重阈 值，可以根据历史数据进行统计确定，也可以是根据本领域的经验值进行确定。其中，下级 中心服务器在向上级中心服务器上传图片数据时，使用冗余链路进行通信，即至少使用两 种通信方式进行传输，如基于通信方式的稳定化和/或安全性确定通信方式；其中，

；a、b为常系数。 when

,

When , calculate the weight W of the picture, when

When the cloud server is selected, determine the communication method between the cloud server and the first-level central server, and select the communication method with the highest security for uploading image data; determine the communication method between the cloud server and the second-level, third-level and fourth-level center servers, and select stable The most sexual communication method is used to upload pictures; when

When the cloud server is used, determine the communication mode between the cloud server and the primary and secondary central servers, and select the communication mode with the highest security for uploading image data; determine the communication mode between the cloud server and the third- and fourth-level central servers, select stable The most sexual communication method is used to upload image data. here,

The preset weight threshold can be statistically determined according to historical data, or determined according to empirical values in the field. Wherein, when the lower-level central server uploads image data to the upper-level central server, it uses redundant links for communication, that is, at least two communication modes are used for transmission, such as determining the communication mode based on the stabilization and/or security of the communication mode; wherein ,

; a and b are constant coefficients.

，

时，确定云服务器与二级中心服务器之间的通信方式， 选择安全性最高的通信方式进行图片上传，确定云服务器与三级和四级中心服务器之间的 通信方式，选择稳定性最高的通信方式进行图片数据上传。其中，一级中心服务器分别从二 级、三级和四级中心服务器获取图片数据，并根据包括图片数据的头文件进行图片的校验。 when

,

When the cloud server is selected, determine the communication method between the cloud server and the secondary central server, choose the communication method with the highest security for uploading pictures, determine the communication method between the cloud server and the third- and fourth-level central servers, and select the communication with the highest stability way to upload image data. The first-level central server obtains the picture data from the second-level, third-level and fourth-level central servers respectively, and performs picture verification according to the header file including the picture data.

，

时，确定云服务器与三级中心服务器之间的通信方式，选择 安全性最高的通信方式进行图片上传，确定云服务器与四级中心服务器之间的通信方式， 选择稳定性最高的通信方式进行图片数据上传；二级中心服务器分别从三级和四级中心服 务器获取图片数据，并根据包括图片数据的头文件进行图片的校验；一级中心服务器分别 从二级、三级和四级中心服务器获取图片数据，并根据包括图片数据的头文件进行图片的 校验。 when

,

At the time, determine the communication method between the cloud server and the third-level center server, select the communication method with the highest security for uploading pictures, determine the communication method between the cloud server and the fourth-level center server, and select the communication method with the highest stability to upload pictures. Data upload; the secondary central server obtains image data from the third and fourth central servers respectively, and performs image verification according to the header file including the image data; the primary central server obtains image data from the secondary, tertiary and fourth central servers respectively Obtain image data, and verify the image according to the header file including the image data.

，

时；确定云服务器与四级中心服务器之间的通信方式，选择 安全性最高的通信方式进行图片上传；然后，四级中心服务器分别将图片数据依次上传至 一级、二级和三级中心服务器。 when

,

time; determine the communication method between the cloud server and the fourth-level central server, and select the communication method with the highest security to upload pictures; then, the fourth-level central server uploads the picture data to the first-level, second-level and third-level center servers respectively. .

是根据历史温度数据确定图片所指示的区域的高级阈值，

是根 据历史温度数据确定图片所指示的区域的正常温度值；

根据图片所指示区域的历史密 度数据确定的平均密度值；

是根据历史温度数据确定图片所指示的区域的最高温度 值；

是根据历史温度数据确定图片所指示的区域的最高密度值。其中，稳定性根据丢 包率和信号强度进行确定，安全性由丢包率和容错率确定。 Of the above,

is an advanced threshold for determining the area indicated by the picture based on historical temperature data,

It is to determine the normal temperature value of the area indicated by the picture according to the historical temperature data;

The average density value determined from the historical density data of the area indicated by the picture;

It is to determine the highest temperature value of the area indicated by the picture according to the historical temperature data;

is to determine the highest density value in the area indicated by the picture based on historical temperature data. Among them, stability is determined by packet loss rate and signal strength, and security is determined by packet loss rate and fault tolerance rate.

In this way, the embodiment of the present invention sets the uploading process of image data in the above-mentioned manner, and selects the communication mode based on different network performance, which not only effectively utilizes various transmission resources supported by the device, but also ensures the security and stability of data transmission. It can be better applied to the processing of various types of image data, which improves the processing efficiency of the network.

(3) The specific content of data transmission

In this embodiment, the controller 200 uploads the obtained source data package and modified data package to a designated area of the cloud server, wherein the first designated area is used to store the source data package, and the second designated area is used to implement the modified data Storage of packages.

The data in the above-mentioned designated area is not allowed to be edited and can only be read, thereby ensuring the tamper-proof of the stored data; in order to improve the utilization rate of the storage space, after the data transmission is completed, the controller 200 receives the confirmation sent by the cloud server. After receiving the response feedback, the deletion operation is performed after a predetermined time interval to release the network resources and realize the effective recycling of the storage resources.

The cloud server is sending the full data of the source data package and the modified data package to the central server, where the full data includes all the information of the source data package and the modified data package. In addition, the cloud server can also send the component data of the source data package and/or the modified data package to the user server, where the component data includes partial information of the source data package and/or the modified data package and preset watermark information.

Before the cloud server transmits the data packets, it also includes the header setting method of obtaining the source data packet and the modified data packet from the central server, and the identification information respectively allocated for the source data packet and the modified data packet, wherein the identification information and the header setting method are one. A correspondence. Therefore, the cloud server sets the headers for the source data packet and the modified data packet respectively according to the setting method of the header, the identification information of the source data packet and the modified data packet, so as to obtain the source data packet header and the modified data packet header. Here, the source data packet It is different from modifying the header settings of the packet. After that, the cloud server adds the source data packet header and the modified data packet header to the source data packet and the modified data packet respectively to obtain the encapsulated source data packet and the encapsulated modified data packet, and then uploads them to the central server.

After receiving the encapsulated source data packet and the encapsulated modified data packet, the central server determines the identification information in the above-mentioned data packet, determines the setting method of the header according to the identification information, and then calculates the header of the source data packet and the modified data packet respectively, and compares it with the data packet. The headers in the encapsulated source packet and the encapsulated modified packet are compared separately. If they are the same, it means that the above data packets meet the requirements; the central server deletes the headers in the encapsulated source data packets and the modified data packets after encapsulation, and obtains the source data packets and the modified data packets; if they are different, the central server and the cloud server The security channel between them feeds back the abnormal transmission information, indicating the abnormal transmission. The above-mentioned security channel is different from the data transmission channel, and the abnormal transmission information only includes the header of the data packet; when the cloud server receives the header through the security channel, it can be known that the central server has received abnormal data; the cloud server then determines according to the header data. Whether there is forged data, or wrongly transmitted data, if it is a transmission error, obtain the header-related information through the interaction with the central server, and then retransmit.

In the above transmission process, according to the instructions of the central server, the header is added at the cloud server, and the header is deleted at the central server. The header is mainly used for identification and data verification. The package can be processed without any processing, and only needs to be packaged externally, thereby reducing the complexity of the operation and improving the efficiency of data transmission. At the same time, the above detection process can also detect abnormal masquerading packets in time, which improves the security of interaction between servers.

In particular, before the cloud server transmits the data packets, it also includes the interception rules for obtaining the component data from the central server, the license transmission certificate of the component data, the watermark setting method, the header setting method of the source data packet and the modified data packet, and the source data packet. The identification information allocated to the packet and the modification packet respectively, wherein the identification information corresponds to the header setting method one-to-one; the transmission certificate and the interception rule, the watermark setting method, the header setting method of the source packet and the modification packet, and the header setting method for the source packet and the modified packet. The identification information respectively allocated to the modification data packets has a temporary corresponding relationship.

In this way, the cloud server determines whether it needs to be transmitted according to the license transmission certificate of the component data. If so, it intercepts the data packet according to the interception rule of the component data, and then adds a watermark to the intercepted data packet according to the watermark setting method to obtain the component data. data. Described component data is the component data of source data package and/or modification data package, watermark includes visible watermark and invisible watermark, wherein invisible watermark includes the identification information of cloud server, central server and user server, the corresponding identification of watermark device mode , and the identification information respectively allocated to the source data packet and the modified data packet; since the watermark has multiple setting modes, the central server can set the identification information corresponding to each watermark mode. Thus, the cloud server sets the header for the component data according to the setting method of the header, the identification information of the source data packet and the modified data packet to obtain the component data header; then transmits the component data including the header to the user server, where the component data header It may also include a type identifier and an area identifier of the object, wherein the type identifier and area identifier of the object are uniformly set by the central server and delivered to the cloud server and the user server. After receiving the component data including the header, the user server stores it in a temporary buffer, and then forwards the component data including the header to the central server.

After receiving the component data including the header, the central server obtains the license transmission certificate of the component data from the header, and determines the interception rule of the component data, the watermark setting method, the header setting method of the source data packet and the modified data packet, and the source data according to the certificate. The identification information respectively allocated by the data packet and the modified data packet; then regenerate the header and the component data according to the above-mentioned information and the full amount of data received from the cloud server, and combine the newly generated component data and the header with the component data and the component data from the user server respectively. The headers are compared. When the two are consistent, the consistency of the server identification and data identification in the watermark is judged again. If they are consistent, a response feedback is sent to the user server to inform the user of the correctness of the data transmitted by the server.

After receiving the response feedback from the central server, the user server determines the correctness of the classified data, then determines the type of the component data including the header, and stores the above in the corresponding user storage area through the matching of the categories; wherein, the user storage area Only has read-only access in , cannot make changes and forwards. When a user registers with the user server, the user will be asked to select the type of object he is concerned about, as well as information such as the area (area/physical location where the object is located), and then the user server allocates a storage area for the registered user, and provides the storage area for the registered user. According to the object type and area label that the registered user pays attention to, after receiving the data sent by the cloud server, matching is performed according to the object and/or area label. Improve data processing efficiency. In order to improve the data matching efficiency, the cloud server may also use the object category identifier and/or the area identifier as a visible watermark, so as to facilitate the identification of the above-mentioned identification information. Here, before the user server stores the data in the user storage area, it also includes adding a time stamp in the form of a visible watermark; and superimposing and displaying with the visible watermark added by the cloud server. Therefore, the uniqueness of the data can be guaranteed, and the security of the data can be improved.

The above are only preferred implementations of the embodiments of the present invention. It should be noted that the above preferred implementations should not be regarded as limitations on the embodiments of the present invention, and the protection scope of the embodiments of the present invention should be based on the scope defined by the claims. For those skilled in the art, without departing from the spirit and scope of the embodiments of the present invention, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the embodiments of the present invention.

Claims (10)

1. an infrared monitoring method based on a revolving body, is characterized in that, comprises the following steps: Real-time acquisition of infrared images of the surface of the rotating body to measure the temperature of the rotating body; Splicing multiple frames of infrared images of the surface of the revolving body in the selected period to obtain the unfolded image of the surface of the revolving body; Present the unfolded image of the surface of the revolving body to monitor and warn the revolving body. 2. The infrared monitoring method according to claim 1, wherein the step of splicing multiple frames of infrared images in the selected time period to obtain the unfolded image of the surface of the rotating body comprises: determining the selected time period according to the rotating body period, Multi-frame infrared images of the surface of the rotating body in the rotating body cycle are spliced to obtain the expanded image of the rotating body surface. 3. The infrared monitoring method according to claim 2, wherein the step of determining the selected time period according to the period of the rotary body comprises: measuring the rotation angle of the rotary body, and when the rotary body rotation angle reaches a preset value, determining The rotation time of the rotating body reaches the period of the rotating body, and is determined as the corresponding selected time period. 4. The infrared monitoring method according to claim 2, wherein the step of determining the selected time period according to the period of the rotary body comprises: obtaining the rotary body rotational speed and the rotary body rotation time, and according to the rotary body rotational speed and the rotary body The rotation time of the body is used to calculate the period of the body of revolution, and it is determined as the corresponding selected period. 5. The infrared monitoring method according to claim 1, wherein the step of splicing multiple frames of infrared images of the surface of the revolving body in a selected time period to obtain an expanded image of the surface of the revolving body comprises: dividing the revolving body into equal parts and defining Starting position, when the revolving body rotates to each equal position, the infrared image of the surface of the revolving body is captured and edited, and then the captured and edited images are spliced to the unfolded position of the revolving body to obtain the unfolded image of the surface of the revolving body . 6. The infrared monitoring method according to claim 1, wherein the step of splicing multiple frames of infrared images of the surface of the revolving body in a selected time period to obtain an expanded image of the surface of the revolving body comprises: by combining each frame of the surface of the revolving body The infrared image is cut and stretched into a rectangle, and then the images cut and stretched into a rectangle are spliced to the unfolding position of the revolving body to obtain an unfolded image of the surface of the revolving body. 7. The infrared monitoring method according to claim 1, wherein the step of splicing multiple frames of infrared images of the surface of the revolving body in a selected time period to obtain an expanded image of the surface of the revolving body comprises: when the revolving body rotates once every time , splicing multiple frames of infrared images of the surface of the rotating body within the rotation period of the corresponding rotating body into an expanded image of the surface of the rotating body. 8. The infrared monitoring method according to any one of claims 1-7, characterized in that, the expanded image of the surface of the rotating body contains temperature information, so that the temperature of the rotating body is analyzed according to the expanded image of the surface of the rotating body. 9. An infrared monitoring device based on a rotating body is characterized in that, comprising: The image acquisition module is used to acquire the infrared image of the surface of the revolving body in real time to measure the temperature of the revolving body; The image expansion module is used for splicing multiple frames of infrared images of the surface of the revolving body in a selected period to obtain an expanded image of the surface of the revolving body; The image presentation module is used to present the unfolded image of the surface of the revolving body to monitor and warn the revolving body. 10. An infrared monitoring device based on a rotating body, characterized in that, comprising: Thermal imager, used to monitor the infrared radiation information of the rotating body and generate infrared images of the surface of the rotating body to measure the temperature of the rotating body; The controller is used for acquiring the infrared image of the surface of the revolving body, splicing multiple frames of infrared images of the surface of the revolving body in a selected period to obtain the unfolded image of the surface of the revolving body, and presenting the unfolding image of the surface of the revolving body to monitor and warn the revolving body, so as to When there is thermal abnormality in the rotating body, generate and output an alarm trigger signal; The alarm is used to alarm according to the alarm trigger signal.

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