Image acquisition and archiving method and system for overhead line suspension state detection

Abstract

The present invention discloses an image acquisition and archiving method and system for detecting the hanging state of a contact network, and relates to the technical field of contact network hanging detection. The method and system provided by the present invention obtain the corresponding information according to the trigger signal, and then store the contact network hanging image into the corresponding front, back or hanging string image folder according to the corresponding information, and store the corresponding information into a primary archiving database; then perform normalization processing and analysis on each trigger information, and create one-pole-one-file folders one by one, and then classify the image information in the front, back or hanging string image folder corresponding to each trigger into the corresponding one-pole-one-file folder to form one-pole-one-file data; each one-pole-one-file folder only contains images belonging to the hanging position of the contact network, which solves the problems of different pole images being classified into the same folder, incomplete images of the same pole, and too many images of the same pole existing in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of overhead line suspension detection, and more specifically to an image acquisition and archiving method and system for overhead line suspension state detection. Background Art

[0002] In the field of railway contact network inspection, the contact network suspension state detection device uses a large number of high-definition industrial cameras to perform imaging inspection on contact network components. By analyzing the images, it can obtain the subtle defects of contact network components such as looseness, detachment, and breakage. This device is the most core equipment in the current field of contact network component defect detection.

[0003] The Chinese invention patent document with publication number CN104210500B discloses a contact network suspension state detection device and its working method, wherein the detection device includes: a positioning trigger device, which is used to trigger a shooting device to capture a front image of the contact network suspension system when it is detected that the distance between the detection vehicle and the contact network suspension system in the driving direction reaches a first threshold, and trigger the shooting device to capture a back image of the contact network suspension system after the detection vehicle passes the contact network suspension system and the distance between the detection vehicle and the contact network suspension system reaches a second threshold; a shooting device, connected to the positioning trigger device, is used to capture the front image and the back image of the contact network suspension system. The present invention solves the technical problems in the prior art that the detection process is too complicated and the detection efficiency and accuracy are not high due to the need to manually detect the contact network suspension system, and achieves the technical effect of effectively improving the detection efficiency and the accuracy of the detection results.

[0004] The monitoring device and working method disclosed in the above patent have the following defects:

[0005] 1. To ensure the availability of the images taken, when photographing the contact network positioning point equipment, it is necessary to create a folder according to the pole and accurately file all the images corresponding to the pole into the folder.

[0006] At present, the traditional archiving method mainly adopts the method of shooting and archiving, that is: when the vehicle moves forward, every time the front side of the pillar passes a pillar, a folder corresponding to the current pole position is created, and the side image is stored in the folder. After the vehicle runs to the back side and the back side image is shot, the back side image is put into the folder.

[0007] Due to the complexity of the contact network line (there may be problems such as false triggering, one side is normal and the other side cannot be triggered), during the contact network image shooting process, it is easy for images of different poles to be classified into the same folder, images of the same pole are incomplete, and there are too many images of the same pole.

[0008] 2. Both the front and back sides of the contact network suspension system were monitored by snapshots, but the suspension strings were not monitored separately. The contact suspension includes the contact wire, suspension strings, load-bearing cables, and connecting parts and insulators. The contact wire is suspended on the load-bearing cables through the suspension strings. The role of the suspension strings: without adding pillars, the suspension points of the contact wire are increased, so that the sag and elasticity of the contact wire are improved, and the working quality of the contact wire is improved. In addition, by adjusting the length of the suspension strings, the height of the contact wire to the rail surface can be guaranteed. Therefore, the suspension strings play a very important role in the contact suspension, and it is very important to conduct snapshot monitoring of the suspension strings. Summary of the invention

[0009] In order to overcome the defects existing in the above-mentioned prior art, the present invention discloses an image acquisition and archiving method and system for detecting the suspension status of a contact network. The purpose of the present invention is to solve the problems in the prior art of no separate snapshot monitoring of the suspension string, image archiving easily resulting in different pole images being classified into the same folder, incomplete images of the same pole, and too many images of the same pole.

[0010] In order to achieve the above objectives, the technical solution adopted by the present invention is:

[0011] An image acquisition and archiving method for overhead line suspension state detection includes an image acquisition step, a folder and database establishment step, an image primary archiving step, and an image secondary archiving step, which are specifically as follows:

[0012] Step S1, image acquisition.

[0013] Generate a trigger signal and collect the overhead line suspension state detection image. Specifically, according to the image collection conditions, the trigger mechanism generates a trigger signal, and the collection mechanism collects the overhead line suspension state detection image according to the trigger signal.

[0014] Preferably, the contact network suspension state detection image at least includes a front image, a back image and a hanging string image of the contact network suspension.

[0015] Preferably, the trigger mechanism at least includes a front trigger mechanism, a back trigger mechanism and a hanging string trigger mechanism. The collection mechanism at least includes a front collection mechanism, a back collection mechanism and a hanging string collection mechanism.

[0016] Step S2, establishing an image folder and a database.

[0017] The initial and end position information of the overhead contact network suspension to be detected is obtained, an archive database is created, and corresponding image folders are created according to the image type. Specifically, the initial and end position information of the overhead contact network suspension to be detected is obtained, and a primary archive database of the overhead contact network suspension state detection images and image folders corresponding to each overhead contact network suspension state detection image are created.

[0018] Preferably, the image folder includes a front image folder, a back image folder and a hanging string image folder.

[0019] In the present invention, the position of the current vehicle on the line needs to be determined before detection, which is used as the initial position of the current detection task, and the position of the vehicle when the detection is completed is used as the end position. The initial position is used to determine the position reference for the subsequent detected object.

[0020] Preferably, when creating the corresponding image folder, each folder establishes an independent sequence number variable. The purpose of establishing an independent sequence number variable for each folder is that when filing once, the front image, the back image and the hanging string image are independent and not related to each other, so as to achieve mutual independence.

[0021] Preferably, the archived database includes but is not limited to independent serial number, station area, pole number, kilometer mark, bridge and tunnel name, time, mileage, front end, back end and suspension string information.

[0022] Step S3: the image is archived once.

[0023] The corresponding information of the trigger signal is obtained, and according to the corresponding information, the collected contact network suspension state detection image is stored in the corresponding image folder, and the corresponding information is stored in the archive database.

[0024] Specifically, the information corresponding to the trigger signal in step S1 is obtained, and according to the corresponding information, the contact network suspension image collected in step S1 is stored in the front image folder, the back image folder and the suspension string image folder established in step S2 according to the front image, the back image and the suspension string image, respectively, and the corresponding information is stored in the primary archiving database in step S2.

[0025] In the present invention, each time a trigger signal is received, a subfolder is constructed separately in each type of image file according to the classified image, and all images of the same type taken at that time are stored. The front side, back side, and hanging string will all take images according to each trigger signal (each trigger signal will take multiple images). The inspection vehicle includes multiple front cameras, multiple back cameras, and multiple hanging string cameras. Each type of camera will take images at the same time after receiving their respective trigger signals, so multiple images will be taken at the same time, and the images will be stored in the corresponding front image folder, back image folder, and hanging string image folder.

[0026] Preferably, the corresponding information of the trigger signal corresponds to the image type, and the corresponding information of the trigger signal includes but is not limited to an independent serial number, a trigger type, a trigger time and a trigger position.

[0027] In the present invention, each front side, back side and hanging string positioning position of the contact network suspension has an independent serial number. After the trigger mechanism is triggered, the trigger information containing the independent serial number is sent to the image one-time archiving database; the image one-time archiving database pre-stores the information of each independent serial number, and obtains the information corresponding to the trigger according to the received serial number information, including the independent serial number, trigger type, trigger time and trigger position information; the image one-time archiving database stores the received contact network suspension image into its corresponding front side, back side or hanging string image folder according to the corresponding information obtained, and stores the corresponding information in the one-time archiving database at the same time.

[0028] Preferably, the trigger types include but are not limited to front side, back side and hanging string.

[0029] In the image archiving step, the independent serial number of the trigger signal is obtained, and the independent serial number variables of each image file are combined to create an image subfolder corresponding to the information corresponding to the trigger signal. The image corresponding to the trigger signal is obtained and stored in the image subfolder, as follows:

[0030] Receive trigger signals and overhead line suspension status detection images;

[0031] According to the trigger signal, obtaining corresponding information including an independent sequence number, a trigger type, a trigger time and a trigger position of the trigger signal;

[0032] The corresponding trigger source serial number is incremented by 1, and the corresponding subfolder is created;

[0033] Write the corresponding information of the trigger signal into the primary archive database;

[0034] Write the image information corresponding to the trigger signal into the corresponding subfolder created.

[0035] Step S4: secondary archiving of the image.

[0036] According to the trigger position, the images stored in the image folder and the information in the archive database are normalized, and a one-rod-one-file folder is established, and the corresponding images are classified into the one-rod-one-file folder to form one-rod-one-file data.

[0037] Specifically, the one-time archiving database and image folder information stored in step S3 are used to normalize each trigger according to the position, and one-pole-one-file folders are created one by one. Then, the image information in the front image folder, the back image folder and the hanging string image folder corresponding to each trigger is classified into the corresponding one-pole-one-file folder to form one-pole-one-file data.

[0038] The above steps are the correction process for secondary archiving of images. During the correction process, the front trigger, back trigger and hanging string trigger need to be normalized by position to ensure that the three are included in the same folder and there is no deviation in the position. Normalization by position means normalization according to different contact network suspensions. Different contact network suspensions can be distinguished according to the pillars. Each time the working vehicle passes a pillar, it is represented as a contact network suspension. In order to correspond each pillar to a different contact network suspension, and establish a corresponding one-pole-one-file folder and one-pole-one-file data, each one-pole-one-file folder only contains images belonging to the contact network suspension position, that is, the contact network suspension image corresponding to the column, which solves the problems of different pole images being included in the same folder, incomplete images of the same pole, and too many images of the same pole in the prior art.

[0039] The image secondary archiving step specifically includes the following steps:

[0040] a. Determine whether the number of images to be archived for the second time in the primary archive database is greater than a first threshold value. If so, proceed to step b. If not, proceed to step S3 of the primary archive of images;

[0041] In this step, the secondary filing number refers to the number of primary filing images obtained in the primary filing step, which is counted from 1 to the first threshold. When the count exceeds the first threshold, step b is entered. The setting value of the first threshold can be conventionally set, such as 10, 20, 30 and other constants.

[0042] b. Determine whether the image to be archived for secondary archiving is the initial secondary archiving. If so, proceed to step c; if not, proceed to step d;

[0043] c. Determine the driving direction by using the mileage relationship between the serial numbers of several positive and negative images in sequence;

[0044] Preferably, the specific method for determining the driving direction is: determining whether the absolute value of the difference between the front mileage and the back mileage is approximately equal to the spacing between the front and back trigger mechanisms, if so, it is forward driving, otherwise it is reverse driving.

[0045] d. Correct the position of the trigger signal in the primary archive database;

[0046] Preferably, the correction method is: in a primary archive database, the trigger signals of each serial number are added or subtracted in pairs according to the driving direction and the actual trigger distance, and the difference is compared with the second threshold. If the difference is less than the second threshold, the two trigger signals are determined to be trigger signals of the same contact network hanging position; otherwise, they are determined to be trigger signals of different contact network hanging positions.

[0047] During the process of collecting images while the vehicle is driving, after the trigger mechanism is triggered, when the trigger positions of two adjacent contact network suspensions are far apart, the mileage difference between the two is large and greater than the second threshold value, so when the mileage difference between the two is large, it can be determined that the two do not belong to the same contact network suspension. When the front trigger, back trigger and suspension string trigger positions of the contact network suspension are close to each other, the mileage difference between the two is small and less than the second threshold value, so when the mileage difference between the two is small, it can be determined that the two belong to the same contact network suspension.

[0048] In the above steps, according to the mileage of the vehicle body, the trigger mileage of the front trigger signal is subtracted from the trigger mileage of the back trigger signal, and the difference is equal to the relative distance between the front trigger device and the back trigger device. You can also use the mileage of one trigger device to add or subtract the relative distance between the two, and compare the result with the mileage of the other trigger device. It should be the same. If it exceeds the preset threshold, it is not the same position.

[0049] e. According to the corrected position relationship, the trigger signals belonging to the same overhead line suspension position are merged to create a one-pole-one-file folder;

[0050] In the above steps, the trigger signal of the same contact network suspension position includes the front position trigger signal, the back position trigger signal and the suspension string position trigger signal of the same contact network suspension.

[0051] f. In the front and back image folders, cut the front and back images of the overhead contact network hanging belonging to the same overhead contact network hanging position into the corresponding one-pole-one-file folder; at the same time, in the hanging string image folder, adjust the file names of the overhead contact network hanging string images belonging to the same overhead contact network hanging position in sequence, and cut the adjusted hanging string images into the corresponding one-pole-one-file folder;

[0052] g. Determine whether the contact network suspension status detection has been completed. If so, end the archiving and give a prompt. If not, go to step a.

[0053] Based on the above-mentioned image acquisition and archiving method for detecting the hanging state of the contact network, the present invention also provides an image acquisition and archiving system for detecting the hanging state of the contact network, including an image acquisition module, a folder establishment module, a database establishment module, an image primary archiving module and an image secondary archiving module;

[0054] The image acquisition module is used to generate a trigger signal and acquire a detection image of the overhead line suspension state, and at the same time send the trigger signal and the detection image of the overhead line suspension state to the image primary archiving module;

[0055] The folder creation module creates an image folder corresponding to each contact network suspension state detection image according to the initial and end position information of the contact network suspension to be detected, and stores each contact network suspension state detection image;

[0056] Preferably, the image folder includes at least a front image folder, a back image folder and a hanging string image folder;

[0057] The database establishment module creates a primary archiving database of the contact network suspension state detection image based on the initial and end position information of the contact network suspension to be detected;

[0058] The image primary archiving module is used to receive the trigger signal and the contact network suspension state detection image sent by the image acquisition module, obtain the information corresponding to the trigger signal, and store the contact network suspension state detection image in the image folder according to the corresponding information, and store the trigger signal corresponding information in the primary archiving database;

[0059] The image secondary archiving module is used to utilize the primary archiving database and image folder information stored in the image primary archiving module to normalize each trigger according to the position, and create one-rod-one-file folders one by one, and then classify the image information in the image folder corresponding to each trigger into the corresponding one-rod-one-file folder to form one-rod-one-file data.

[0060] Furthermore, the image acquisition module includes a contact network front side acquisition device, a contact network back side acquisition device and a contact network dropper string acquisition device;

[0061] The contact network front-side collection device comprises a front-side trigger mechanism and a front-side collection mechanism; the front-side trigger mechanism and the front-side collection mechanism are both arranged on the top of the working vehicle; the working vehicle travels on the track, and when the contact network is suspended above the front-side trigger mechanism, the front-side trigger mechanism is triggered, and the front-side trigger mechanism sends a trigger signal to the front-side collection mechanism and the image one-time archiving module, and the front-side collection mechanism receives the trigger signal and shoots the front side of the contact network suspension above, and transmits the shot front-side image of the contact network suspension to the image one-time archiving module;

[0062] The contact network back side collection device comprises a back side trigger mechanism and a back side collection mechanism; the back side trigger mechanism and the back side collection mechanism are both arranged on the top of the working vehicle; the working vehicle travels on the track, and when the contact network is suspended above the back side trigger mechanism, the back side trigger mechanism is triggered, and the back side trigger mechanism sends a trigger signal to the back side collection mechanism and the image one-time archiving module, the back side collection mechanism receives the trigger signal and photographs the back side of the contact network suspension above, and transmits the photographed back side image of the contact network suspension to the image one-time archiving module;

[0063] The contact network hanging string collection device includes a hanging string triggering mechanism and a hanging string collection mechanism; the hanging string triggering mechanism and the hanging string collection mechanism are both arranged on the top of the working vehicle; the working vehicle travels on the track, and when the hanging string is located above the hanging string triggering mechanism, the hanging string triggering mechanism is triggered, and the hanging string triggering mechanism sends a trigger signal to the hanging string collection mechanism and the image one-time archiving module, and the hanging string collection mechanism receives the trigger signal and photographs the hanging strings of the contact network above, and transmits the photographed image of the contact network hanging strings to the image one-time archiving module.

[0064] Furthermore, the image acquisition module also includes a positioning mechanism, and the positioning mechanism includes a front positioning mechanism, a back positioning mechanism and a hanging string positioning mechanism;

[0065] The front positioning mechanism is arranged on the front side of the contact network suspension, the back positioning mechanism is arranged on the back side of the contact network suspension, and the suspension string positioning mechanism is arranged on the suspension string of the contact network suspension.

[0066] Furthermore, the front trigger mechanism is located in front of the front acquisition mechanism, and the image acquisition end of the front acquisition mechanism is forward and tilted upward toward the front side of the contact network suspension; after the front trigger mechanism is triggered, the front acquisition mechanism shoots the front image of the contact network suspension forward in an oblique upward manner.

[0067] Furthermore, the back-side triggering mechanism is located behind the back-side collecting mechanism, and the image collecting end of the back-side collecting mechanism is backward and inclined upward toward the back side of the contact network suspension; after the back-side triggering mechanism is triggered, the back-side collecting mechanism shoots the back-side image of the contact network suspension backward and obliquely upward.

[0068] Furthermore, the suspension string triggering mechanism is located behind the suspension string collecting mechanism, and the image collecting end of the suspension string collecting mechanism is backward and inclined upward toward the contact network suspension string; after the suspension string triggering mechanism is triggered, the suspension string collecting mechanism shoots the image of the contact network suspension string backward and obliquely upward.

[0069] Beneficial effects of the present invention:

[0070] 1. The image acquisition and archiving method for contact network suspension status detection provided by the present invention obtains the corresponding information according to the trigger signal, and then stores the contact network suspension image into the corresponding front, back or hanging string image folder according to the corresponding information, and stores the corresponding information into a primary archiving database; then normalizes and analyzes the trigger information each time, and creates one-pole-one-file folders one by one, and then classifies the image information in the front, back or hanging string image folder corresponding to each trigger into the corresponding one-pole-one-file folder to form one-pole-one-file data; each one-pole-one-file folder only contains images belonging to the contact network suspension position, which solves the problems of different pole images being classified into the same folder, incomplete images of the same pole, and too many images of the same pole in the prior art.

[0071] 2. The image acquisition and archiving system for contact network suspension status detection provided by the present invention is that the working vehicle travels on the track to detect the contact network suspension status. When the working vehicle is located under the contact network suspension, the trigger mechanisms of the contact network front acquisition device, the contact network back acquisition device and the suspension string acquisition device are triggered, and the acquisition mechanisms are controlled to acquire the front image, back image and suspension string image of the contact network suspension, and the trigger signals and the acquired images are transmitted to the image primary archiving module and the image secondary archiving module for storage and archiving, so as to facilitate subsequent defect judgment of the images. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 A step diagram of the image acquisition and archiving method of the present invention;

[0073] Figure 2 It is a flow chart of the image acquisition and archiving method of the present invention;

[0074] Figure 3 This is a schematic diagram of a primary filing database table of the present invention;

[0075] Figure 4 This is a schematic diagram of the database mileage correction process of the present invention;

[0076] Figure 5 It is a schematic diagram of the image acquisition and archiving system of the present invention;

[0077] Reference numerals:

[0078] 11. Front positioning mechanism; 12. Front triggering mechanism; 13. Front collecting mechanism; 21. Rear positioning mechanism; 22. Rear triggering mechanism; 23. Rear collecting mechanism; 31. Suspension string positioning mechanism; 32. Suspension string triggering mechanism; 33. Suspension string collecting mechanism. DETAILED DESCRIPTION

[0079] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in combination with the embodiments and drawings to fully understand the purpose, characteristics and effects of the present invention.

[0080] Example 1

[0081] An image acquisition and archiving method for detecting the hanging state of a contact network comprises an image acquisition step, a folder and a database establishment step, an image primary archiving step and an image secondary archiving step. Figure 1 As shown, the details are as follows:

[0082] Step S1, image acquisition.

[0083] According to the image acquisition conditions, the trigger mechanism generates a trigger signal and acquires the contact network suspension state detection image; the contact network suspension state detection image includes the front image, the back image and the hanging string image of the contact network suspension.

[0084] In this embodiment, image acquisition is implemented by an image acquisition module, which includes a contact network front acquisition device, a contact network back acquisition device, and a contact network hanging string acquisition device. When the working vehicle travels on the track and passes under the contact network suspension, the trigger mechanism of the contact network front acquisition device, the contact network back acquisition device, and / or the hanging string acquisition device generates a trigger signal, and sends the trigger signal to the acquisition mechanism and the image primary archiving module. After receiving the trigger signal, the acquisition mechanism acquires the contact network suspension image and sends the acquired contact network suspension image to the image primary archiving module.

[0085] Step S2, creating folders and databases.

[0086] The initial and end position information of the overhead contact network suspension to be detected is obtained, and a primary archiving database of the overhead contact network suspension state detection images and image folders corresponding to each overhead contact network suspension state detection image are created. The image folders include a front image folder, a back image folder and a hanging string image folder.

[0087] In the above steps, when creating image folders, each folder establishes an independent serial number variable. The purpose of establishing independent serial number variables for each folder is that when archiving once, the front image, the back image and the hanging string are independent and not related to each other. The one-time archiving database includes serial number, station area, pole number, kilometer mark, bridge and tunnel name, time, mileage accumulation, front end, back end and hanging string information, such as Figure 3 As shown, Figure 3 In the figure, the first end and the second end represent the front end and the back end respectively.

[0088] Step S3: the image is archived once.

[0089] Obtain information corresponding to the trigger signal in the image acquisition step, and store the contact network suspension status detection image acquired in the image acquisition step into the corresponding image folder in step S2 according to its corresponding information, and store the corresponding information in the primary archiving database in step S2.

[0090] Specifically, the information corresponding to the trigger signal in the image acquisition step is obtained, and according to the corresponding information, the front image, back image and hanging string image of the overhead contact network collected in the image acquisition step are stored in the corresponding front image folder, back image folder and hanging string image folder in the folder and database establishment step, and the corresponding information is stored in the primary archive database in the folder and database establishment step, such as Figure 3 shown.

[0091] In the above steps, the corresponding information includes an independent sequence number, a trigger type, a trigger time and a trigger position.

[0092] Step S4: secondary archiving of images

[0093] Using the archived database and image folder information stored in step S3, each trigger is normalized by position, and one-rod-one-file folders are created one by one. Then, the image information in the image folder corresponding to each trigger is classified into the corresponding one-rod-one-file folder to form one-rod-one-file data.

[0094] The above steps are the correction process of secondary archiving. During the correction process, the front trigger, back trigger and hanging string trigger need to be normalized according to the position to ensure that the three are included in the same folder and there is no deviation in the position.

[0095] Example 2

[0096] Based on the first embodiment, this embodiment further improves the image archiving step. Figure 2 As shown, the image archiving step S3 specifically includes the following steps:

[0097] S31, receiving a trigger signal and a contact network suspension state detection image;

[0098] S32, according to the trigger signal, obtaining corresponding information including the independent sequence number, trigger type, trigger time and trigger position of the trigger signal;

[0099] S33, the corresponding trigger source serial number is incremented by 1, and the corresponding subfolder is created;

[0100] S34, writing the corresponding information of the trigger signal into a primary archiving database;

[0101] S35. Write the image information corresponding to the trigger signal into the corresponding subfolder created.

[0102] Example 3

[0103] Based on Example 2, this embodiment further improves the image secondary archiving step S4, such as Figure 2 As shown, the image secondary archiving step S4 specifically includes the following steps:

[0104] a. Determine whether the number of images to be archived again in the primary archive database is greater than a first threshold value. If so, proceed to step b; if not, proceed to the image primary archive step;

[0105] In this step, the secondary filing number refers to the number of primary filing images obtained in the primary filing step, which is counted from 1 to the first threshold. When the count exceeds the first threshold, step b is entered. The setting value of the first threshold can be conventionally set, such as 10, 20, 30 and other constants, and is 20 in this embodiment.

[0106] b. Determine whether the image to be archived for secondary archiving is the initial secondary archiving. If so, proceed to step c; if not, proceed to step d;

[0107] c. Use the mileage relationship corresponding to the serial numbers of the five positive and negative images to determine the driving direction;

[0108] In this step, the specific method for determining the driving direction is: determine if abs (front mileage - back mileage) ≈ the distance between the front and back trigger mechanisms. If so, it is forward driving, otherwise it is reverse driving.

[0109] d. Correct the position of the trigger signal in the primary archive database;

[0110] In this step, the correction method is: in a primary archive database, the trigger signals of each serial number are added or subtracted in pairs according to the driving direction and the actual trigger distance, and the difference is compared with the second threshold. If the difference is less than the second threshold, the two trigger signals are determined to be trigger signals of the same contact network hanging position, otherwise they are determined to be trigger signals of different contact network hanging positions.

[0111] During the process of collecting images while the vehicle is driving, after the trigger mechanism is triggered, the trigger positions of the two adjacent contact network suspensions are far apart, and the mileage difference between the two is large, which is greater than the second threshold value. Therefore, when the mileage difference between the two is large, it is determined that the two do not belong to the same contact network suspension. The front trigger, back trigger and suspension string trigger positions of the same contact network suspension are close to each other, and the mileage difference between the two is small, which is less than the second threshold value. Therefore, when the mileage difference between the two is small, it is determined that the two belong to the same contact network suspension. The second threshold value of this embodiment is 1m.

[0112] e. According to the corrected position relationship, the trigger signals belonging to the same overhead line suspension position are merged to create a one-pole-one-file folder;

[0113] In the above steps, the trigger signal of the same contact network suspension position includes the front position trigger signal, the back position trigger signal and the suspension string position trigger signal of the same contact network suspension.

[0114] f. In the front and back image folders, cut the front and back images of the overhead contact network hanging belonging to the same overhead contact network hanging position into the corresponding one-pole-one-file folder; at the same time, in the hanging string image folder, adjust the file names of the overhead contact network hanging string images belonging to the same overhead contact network hanging position in sequence, and cut the adjusted hanging string images into the corresponding one-pole-one-file folder;

[0115] g. Determine whether the contact network suspension status detection has been completed. If so, end the archiving and give a prompt. If not, go to step a.

[0116] Figure 3 In the image archiving step S3, the data of serial numbers 1-3 indicate that at the same contact network hanging position, the trigger signals of the front side, back side and hanging string position were received respectively, and the front side, back side and hanging string images of the contact network were taken; serial numbers 4-7 indicate that at different contact network hanging positions, the trigger signals of the hanging string position were received, and the hanging string images of the contact network were taken respectively; the data of serial numbers 8-10 are consistent with the data of serial numbers 1-3, and three images of the same contact network hanging position were taken; the data of serial numbers 11-17 are consistent with the data of serial numbers 4-7, and the hanging string images of different contact network hanging positions were taken.

[0117] Figure 4 In the image secondary archiving step S4, Figure 3 The data of sequence numbers 1-3 in are merged into Figure 4 The data with serial number 1 in the above table is normalized for the front, back and hanging string information of the same overhead wire hanging position, and a folder data for each pole is created. Figure 3 The data of sequence numbers 4-7 in the Figure 4 For the data numbered 2-5, one folder of data is created for each pole for the suspension string information at different contact network hanging positions.

[0118] Example 4

[0119] An image acquisition and archiving system for detecting the hanging state of a contact network comprises an image acquisition module, a folder establishment module, a database establishment module, an image primary archiving module and an image secondary archiving module;

[0120] The image acquisition module is used to generate a trigger signal and acquire a detection image of the overhead line suspension state, and at the same time send the trigger signal and the detection image of the overhead line suspension state to the image primary archiving module;

[0121] The folder creation module creates an image folder corresponding to each contact network suspension state detection image according to the initial and end position information of the contact network suspension to be detected, and stores each contact network suspension state detection image;

[0122] The database establishment module creates a primary archiving database of the contact network suspension state detection image based on the initial and end position information of the contact network suspension to be detected;

[0123] The image primary archiving module is used to receive the trigger signal and the contact network suspension state detection image sent by the image acquisition module, obtain the information corresponding to the trigger signal, and store the contact network suspension state detection image in the image folder according to the corresponding information, and store the trigger signal corresponding information in the primary archiving database;

[0124] The image secondary archiving module is used to utilize the primary archiving database and image folder information stored in the image primary archiving module to normalize each trigger according to the position, and create one-rod-one-file folders one by one, and then classify the image information in the image folder corresponding to each trigger into the corresponding one-rod-one-file folder to form one-rod-one-file data.

[0125] Example 5

[0126] This embodiment is further improved on the basis of embodiment 4, such as Figure 5 As shown, the image acquisition module includes a contact network front side acquisition device, a contact network back side acquisition device and a contact network hanging string acquisition device;

[0127] The front-side collection device of the contact network includes a front-side positioning mechanism 11, a front-side triggering mechanism 12 and a front-side collection mechanism 13; the front-side positioning mechanism 11 is arranged on the front side of the contact network suspension, and the front-side triggering mechanism 12 and the front-side collection mechanism 13 are both arranged on the top of the working vehicle; when the working vehicle is traveling on the track and the front-side positioning mechanism 11 is located above the front-side triggering mechanism 12, the front-side triggering mechanism 12 is triggered, and the front-side triggering mechanism 12 sends a trigger signal to the front-side collection mechanism 13 and the image one-time archiving module, and the front-side collection mechanism 13 receives the trigger signal and shoots the front side of the contact network suspension above, and transmits the shot front-side image of the contact network suspension to the image one-time archiving module;

[0128] The back side collection device of the contact network includes a back side positioning mechanism 21, a back side triggering mechanism 22 and a back side collection mechanism 23; the back side positioning mechanism 21 is arranged on the back side of the contact network suspension, and the back side triggering mechanism 22 and the back side collection mechanism 23 are both arranged on the top of the working vehicle; when the working vehicle is traveling on the track and the back side positioning mechanism 21 is located above the back side triggering mechanism 22, the back side triggering mechanism 22 is triggered, and the back side triggering mechanism 22 sends a trigger signal to the back side collection mechanism 23 and the image one-time archiving module, and the back side collection mechanism 23 receives the trigger signal and shoots the back side of the contact network suspension above, and transmits the shot back side image of the contact network suspension to the image one-time archiving module;

[0129] The contact network string collection device comprises a string positioning mechanism 31, a string triggering mechanism 32 and a string collection mechanism 33; the string positioning mechanism 31 is arranged on the contact network suspension string, and the string triggering mechanism 32 and the string collection mechanism 33 are both arranged on the top of the working vehicle; when the working vehicle is traveling on the track and the string positioning mechanism 31 is located above the string triggering mechanism 32, the string triggering mechanism 32 is triggered, and the string triggering mechanism 32 sends a trigger signal to the string collection mechanism 33 and the image primary archiving module, the string collection mechanism 33 receives the trigger signal and shoots the contact network suspension string above, and transmits the shot contact network string image to the image primary archiving module.

[0130] In this embodiment, the trigger mechanisms of the contact network front side collection device, the contact network back side collection device and the hanging string collection device are respectively set at the positioning points on the front side of the contact network suspension, the positioning points on the back side of the contact network and the positioning points on the hanging string; the collection mechanisms of the contact network front side collection device, the contact network back side collection device and the hanging string collection device are cameras, and the cameras are used to capture images. The operating vehicle travels on the track to detect the state of the contact network suspension. When the operating vehicle is located under the contact network suspension, the trigger mechanisms of the contact network front side collection device, the contact network back side collection device and the hanging string collection device are triggered, and the collection mechanisms are controlled to collect the front image, back image and hanging string image of the contact network suspension, and the trigger signal and the collected image are transmitted to the image primary archiving module for storage and archiving processing, so as to facilitate the subsequent judgment of defects in the image.

[0131] Example 6

[0132] This embodiment is further improved on the basis of embodiment 4, such as Figure 5 As shown, the front trigger mechanism 12 is located in front of the front collection mechanism 13, and the image collection end of the front collection mechanism 13 is forward and tilted upward toward the front side of the contact network suspension; after the front trigger mechanism 12 is triggered, the front collection mechanism 13 moves forward and tilted upward to shoot the front image of the contact network suspension.

[0133] The back side trigger mechanism 22 is located behind the back side collection mechanism 23, and the image collection end of the back side collection mechanism 23 is backward and tilted upward toward the back side of the contact network suspension; after the back side trigger mechanism 22 is triggered, the back side collection mechanism 23 shoots the back side image of the contact network suspension backward and tilted upward.

[0134] The string triggering mechanism 32 is located behind the string collecting mechanism 33, and the image collecting end of the string collecting mechanism 33 is backward and tilted upward toward the contact network hanging string; after the string triggering mechanism 32 is triggered, the string collecting mechanism 33 shoots the image of the contact network hanging string backward and tilted upward.

[0135] The above is a specific description of the implementation mode of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalents or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. An image acquisition and archiving method for detecting the hanging state of a contact network, characterized in that: The following steps are involved: Step S1, generating a trigger signal and collecting a detection image of the overhead line suspension state; Step S2, obtaining the initial and end position information of the overhead contact network suspension to be detected, creating an archiving database, and creating corresponding image folders according to the image types, wherein the image types include front images, back images, and hanging string images, and the corresponding image folders include front image folders, back image folders, and hanging string image folders; Step S3, obtaining the corresponding information of the trigger signal, and storing the collected overhead line suspension state detection image into the corresponding image folder according to the corresponding information, and storing the corresponding information into the archive database; Step S4, according to the trigger position, normalizes the images stored in the image folder and the information in the archive database, and simultaneously establishes a one-rod-one-file folder, and classifies the corresponding images into the one-rod-one-file folder to form one-rod-one-file data, specifically comprising the following steps: a. Determine whether the number of folders to be archived again in the archive database is greater than a first threshold value. If so, proceed to step b; if not, repeat step S3; b. Determine whether the folder to be re-archived in the database is the initial folder to be re-archived. If so, proceed to step c; if not, proceed to step d; c. Using the mileage relationship corresponding to the independent serial numbers of several folders in sequence, the driving direction is determined, including: by determining whether the absolute value of the difference between the front mileage and the back mileage is approximately equal to the distance between the front and back trigger mechanisms; if so, it is forward driving, otherwise it is reverse driving; d. Correcting the trigger position of the trigger signal in the archive database, the correction method is: calculating the difference according to the driving direction and the actual trigger mechanism spacing, combined with the mileage, and comparing the difference with the second threshold; if the difference is less than the second threshold, it is determined that the two trigger signals are trigger signals of the same contact network hanging position, otherwise it is determined that they are trigger signals of different contact network hanging positions; e. According to the corrected positional relationship, the trigger signals belonging to the same trigger position are merged, and the images in various image subfolders corresponding to the same trigger position are cut into the one-rod-one-file folder.

2. The image acquisition and archiving method according to claim 1, characterized in that: When creating the corresponding image folders, set the independent serial number variables of each type of image folder at the same time.

3. The image acquisition and archiving method according to claim 2, characterized in that: The archived database includes but is not limited to independent serial number, station area, pole number, kilometer mark, bridge and tunnel name, time, mileage, front end, back end and suspension string information.

4. The image acquisition and archiving method according to claim 3, characterized in that: The corresponding information of the trigger signal corresponds to the image type; the corresponding information of the trigger signal includes but is not limited to an independent sequence number, a trigger type, a trigger time and a trigger position.

5. The image acquisition and archiving method according to claim 4, characterized in that: The independent serial number of the trigger signal is obtained, and combined with the independent serial number variables of each image file, an image subfolder corresponding to the corresponding information of the trigger signal is created.

6. The image acquisition and archiving method according to claim 5, characterized in that: The image corresponding to the trigger signal is acquired and stored in the image subfolder.

7. The image acquisition and archiving method according to claim 1, characterized in that: Step S4 also includes determining whether the detection is completed; If the detection is finished, the archiving is finished and a prompt is given; If the detection is not finished, step S4 is repeated until the detection is finished.

8. An image acquisition and archiving system for detecting the hanging state of a contact network based on the image acquisition and archiving method according to any one of claims 1 to 7, characterized in that: It includes an image acquisition module, a folder establishment module, a database establishment module, an image primary archiving module and an image secondary archiving module; The image acquisition module is used to generate a trigger signal and acquire a detection image of the overhead line suspension state, and at the same time send the trigger signal and the detection image of the overhead line suspension state to the image primary archiving module; The folder creation module creates an image folder corresponding to each contact network suspension state detection image according to the initial and end position information of the contact network suspension to be detected, and stores each contact network suspension state detection image; The database establishment module creates a primary archiving database of the contact network suspension state detection image based on the initial and end position information of the contact network suspension to be detected; The image primary archiving module is used to receive the trigger signal and the contact network suspension state detection image sent by the image acquisition module, obtain the information corresponding to the trigger signal, and store the contact network suspension state detection image in the image folder according to the corresponding information, and store the trigger signal corresponding information in the primary archiving database; The image secondary archiving module is used to utilize the primary archiving database and image folder information stored in the image primary archiving module to normalize each trigger according to the position, and create one-rod-one-file folders one by one, and then classify the image information in the image folder corresponding to each trigger into the corresponding one-rod-one-file folder to form one-rod-one-file data.

9. The image acquisition and archiving system according to claim 8, characterized in that: The image acquisition module includes a contact network front side acquisition device, a contact network back side acquisition device and a contact network dropper string acquisition device; The contact network front-side collection device comprises a front-side trigger mechanism and a front-side collection mechanism; the front-side trigger mechanism and the front-side collection mechanism are both arranged on the top of the working vehicle; the working vehicle travels on the track, and when the contact network is suspended above the front-side trigger mechanism, the front-side trigger mechanism is triggered, and the front-side trigger mechanism sends a trigger signal to the front-side collection mechanism and the image one-time archiving module, and the front-side collection mechanism receives the trigger signal and shoots the front side of the contact network suspension above, and transmits the shot front-side image of the contact network suspension to the image one-time archiving module; The contact network back side collection device comprises a back side trigger mechanism and a back side collection mechanism; the back side trigger mechanism and the back side collection mechanism are both arranged on the top of the working vehicle; the working vehicle travels on the track, and when the contact network is suspended above the back side trigger mechanism, the back side trigger mechanism is triggered, and the back side trigger mechanism sends a trigger signal to the back side collection mechanism and the image one-time archiving module, the back side collection mechanism receives the trigger signal and photographs the back side of the contact network suspension above, and transmits the photographed back side image of the contact network suspension to the image one-time archiving module; The contact network hanging string collection device includes a hanging string triggering mechanism and a hanging string collection mechanism; the hanging string triggering mechanism and the hanging string collection mechanism are both arranged on the top of the working vehicle; the working vehicle travels on the track, and when the hanging string is located above the hanging string triggering mechanism, the hanging string triggering mechanism is triggered, and the hanging string triggering mechanism sends a trigger signal to the hanging string collection mechanism and the image one-time archiving module, and the hanging string collection mechanism receives the trigger signal and photographs the hanging strings of the contact network above, and transmits the photographed image of the contact network hanging strings to the image one-time archiving module.

10. The image acquisition and archiving system according to claim 9, characterized in that: The image acquisition module also includes a positioning mechanism, which includes a front positioning mechanism, a back positioning mechanism and a hanging string positioning mechanism; The front positioning mechanism is arranged on the front side of the contact network suspension, the back positioning mechanism is arranged on the back side of the contact network suspension, and the suspension string positioning mechanism is arranged on the suspension string of the contact network suspension.

11. The image acquisition and archiving system according to claim 9, characterized in that: The front trigger mechanism is located in front of the front acquisition mechanism, and the image acquisition end of the front acquisition mechanism is forward and tilted upward toward the front side of the contact network suspension; after the front trigger mechanism is triggered, the front acquisition mechanism shoots the front image of the contact network suspension forward in an oblique upward manner.

12. The image acquisition and archiving system according to claim 9, characterized in that: The back-side triggering mechanism is located behind the back-side collecting mechanism, and the image collecting end of the back-side collecting mechanism is backward and tilted upward toward the back side of the contact network suspension; after the back-side triggering mechanism is triggered, the back-side collecting mechanism shoots the back side image of the contact network suspension backward and tilted upward.

13. The image acquisition and archiving system according to claim 9, characterized in that: The hanging string triggering mechanism is located behind the hanging string collecting mechanism, and the image collecting end of the hanging string collecting mechanism hangs the hanging string backward and tilted upward toward the contact network; After the suspension string triggering mechanism is triggered, the suspension string collecting mechanism takes the image of the contact network suspension string in a backward and obliquely upward manner.

Images