A method for detecting alignment of a transportation track

Abstract

The present application provides a kind of transport track alignment detection method, it is related to automatic control technical field, comprising the following steps: S1: setting transmitter and receiver in the track to be measured;S2: standard track is set to the front of the track to be measured, reflector is set in standard track, and standard track height is lower than the height of the track to be measured;S3: every interval predetermined time is lifted standard track predetermined height value, whether the receiver receives the signal of transmitter is judged;If yes, the track to be measured is installed qualified;Otherwise, S4 is executed;S4: whether the height of standard track is higher than the height of the track to be measured is judged, if yes, the track to be measured is installed unqualified;Otherwise, S3 is executed.The present application is simple and convenient, low in cost, can effectively be aimed at small hanging transport track junction for alignment detection, the whole process can be automated, and whether the track can be aligned due to cross-section problem can be judged, improve the correction and installation efficiency of track.

Description

Technical Field

[0001] This invention relates to the field of automatic control technology, and in particular, to a method for detecting alignment of transport tracks. Background Technology

[0002] In suspended production systems, the transport tracks on the production line are assembled from small track segments. To ensure the tracks are aligned and to prevent unevenness at the joints from obstructing the transport of the suspended vehicle, calibration and testing of the installed tracks are necessary during the assembly and installation process. Currently, track calibration lifts exist to calibrate and test the installed tracks. These lifts have a standard track section; by controlling the rise and fall of this standard track to the track requiring calibration, the alignment of the joints can be used to determine if the installed track is misaligned and requires calibration. However, unevenness at track joints can be caused not only by inconsistent horizontal height but also by a slight misalignment of the cross-sections, even when the tracks are at the same horizontal level.

[0003] Currently, the entire calibration process is done manually, meaning the elevator's standard track is raised and lowered manually, and alignment is determined visually. This method is not only labor-intensive but also inefficient, resulting in large errors in the test results.

[0004] Therefore, the requirements for automated detection of track alignment are now very high. For example, Chinese invention patent CN114494373A provides a high-precision track alignment method and system based on target detection and image registration, including the following steps: Step S1, firstly, perform preliminary matching of the target region through target detection; Step S2, search for key point positions in all scale spaces after preliminary matching and extract key points; Step S3, locate the extracted key points by fitting a model and determine the gradient distribution characteristics and orientation distribution characteristics of the key points; Step S4, construct feature vectors of key points for feature comparison, and establish a descriptor for each key point based on its position, scale, and orientation; Step S5, achieve alignment with the original image through image key point matching. The above invention can align images with pixel-level precision, effectively achieving fast and accurate key point matching and image alignment for track scenarios. The measurement of information is of great practical significance and provides a good data foundation for subsequent track anomaly detection.

[0005] However, the above-mentioned track alignment method still has the following problems: the alignment process is complicated, the requirements for instruments and equipment are high, the cost is high, and it is only convenient to use for large rails. It is not suitable for small hanging transport rails in workshops. Small rails have many segments, and the alignment test is also many times. The measurement is not convenient enough and the cost is high, which still wastes a lot of human and financial resources.

[0006] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable method for detecting the alignment of transportation tracks. Summary of the Invention

[0007] The purpose of this invention is to provide a simple, convenient, and low-cost method for aligning transport tracks. This method can effectively detect the alignment of small suspended transport tracks, and the entire process can be automated. It can also determine whether the track misalignment is due to cross-sectional issues, thereby improving the efficiency of track correction and installation.

[0008] To achieve the above objectives, the present invention employs the following technical solution:

[0009] A method for detecting alignment of transport tracks includes the following steps:

[0010] S1: A transmitter and a receiver located behind the transmitter are set on the track to be tested; the transmitter extends forward toward the installation direction of the track to be tested;

[0011] S2: Set a standard track in front of the installation direction of the track to be tested, and set a reflector on the standard track, with the height of the standard track being lower than the height of the track to be tested;

[0012] S3: Increase the predetermined height value of the standard track at predetermined intervals, and determine whether the receiver receives the signal emitted by the transmitter; if so, the track under test is installed successfully, and the real-time standard track height value is output; otherwise, proceed to step S4.

[0013] S4: Determine whether the height of the standard track is higher than the height of the track to be tested. If so, the track to be tested is not installed properly, the test is terminated, and an alarm is issued; otherwise, continue to execute step S3.

[0014] As a preferred embodiment of the present invention, when performing step S1, a plurality of transmitters and receivers located behind the transmitters are uniformly arranged around the outside of the track to be tested, and the number of receivers is the same as the number of transmitters.

[0015] As a preferred embodiment of the present invention, when performing step S1, the transmitter is a laser transmitter, and the laser emission power of any two transmitters is different.

[0016] As a preferred embodiment of the present invention, when performing step S2, the reflector is arranged around the outside of the standard track, and the reflector is arranged perpendicular to the standard track.

[0017] As a preferred embodiment of the present invention, when performing step S2, the height of the upper end of the standard track is lower than the height of the lower end of the track to be tested.

[0018] As a preferred embodiment of the present invention, when performing step S3, the predetermined height value is not greater than the width of the reflector.

[0019] As a preferred embodiment of the present invention, when performing step S3, it is determined whether all receivers have received the signal emitted by the transmitter; if all receivers have received the signal emitted by the transmitter, the track under test is installed successfully and the real-time standard track height value is output; otherwise, step S4 is performed.

[0020] As a preferred embodiment of the present invention, after outputting the real-time standard track height value in step S3, the method further includes:

[0021] The real-time standard track height value is compared with the expected installation height value to determine whether the error rate is less than the predetermined threshold. If so, the track to be tested is confirmed to be installed successfully; otherwise, it is sent to the control terminal for the installation personnel to make adjustments.

[0022] As a preferred embodiment of the present invention, when performing step S4, it is determined whether the height of the lower end of the standard track is higher than the height of the upper end of the track to be tested. If so, the track to be tested is not installed properly, the test is terminated, and an alarm is issued; otherwise, step S3 is continued.

[0023] As a preferred embodiment of the present invention, when performing step S4, upon termination of detection, data from the entire detection process are collected and merged into an alarm signal for issuance.

[0024] The advantages of the transportation track alignment detection method of the present invention are: it is simple and convenient, low cost, and can effectively detect the alignment of small suspended transportation track joints. The whole process can be completed automatically, and it can determine whether the track cannot be aligned due to cross-sectional issues, thereby improving the efficiency of track correction and installation. Attached Figure Description

[0025] Figure 1 This is a flowchart illustrating a method for detecting alignment of transport tracks according to the present invention. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0027] In the following description, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The following description provides multiple embodiments of this application, which can be substituted or combined with each other. Therefore, this application can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment includes features A, B, and C, and another embodiment includes features B and D, then this application should also be considered to include embodiments containing one or more other possible combinations of A, B, C, and D, even if such embodiments are not explicitly described in the following text.

[0028] The following description provides examples and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made to the function and arrangement of the described elements without departing from the scope of this application. Various processes or components may be appropriately omitted, substituted, or added to the examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.

[0029] Example 1: As Figure 1 As shown, Figure 1 This is a flowchart illustrating a method for aligning transport tracks according to the present invention, and is merely one embodiment of the invention. The method still involves comparing a standard track with the track to be tested for alignment detection. The track to be tested is the track that needs to be installed. Generally, multiple track sections are installed sequentially during track installation, and each section can be considered as the track to be tested during installation. The front end of the track to be tested is the uninstalled end. The standard track is placed on a lifting platform plate, which can be raised and lowered. The lifting platform plate is actually mounted on the moving vehicle and can move along the direction of the track to be installed. During the installation of each track section (i.e., during the installation of the track to be tested), the standard track is ensured to be located below the front end of the track to be tested. The standard track is raised and lowered to the front end of the track to be tested using the lifting function of the lifting platform plate. The alignment of the standard track and the track to be tested is then used to verify whether the track to be tested is properly aligned.

[0030] The alignment detection method includes the following steps:

[0031] S1: A transmitter and a receiver located behind the transmitter are set on the track to be tested; the transmitter extends forward toward the installation direction of the track to be tested;

[0032] After the initial installation of the track to be tested is completed, it needs to be checked whether it is aligned. If it is aligned, the installation of the track to be tested is completed and the installation of the next track section can begin; otherwise, if it is not aligned, the track to be tested needs to be adjusted.

[0033] When performing step S1, several transmitters and receivers located behind the transmitters are evenly arranged around the outside of the track to be tested, and the number of receivers is the same as the number of transmitters.

[0034] Moreover, when performing step S1, the transmitter is a laser transmitter, and the laser frequencies of any two transmitters are different. Each receiver is used to receive the laser emitted by its corresponding transmitter, and the receiver has only two states: receiving the laser of the corresponding frequency (Yes), or not receiving the laser of the corresponding frequency (No).

[0035] Of course, the transmitter can also be an infrared light transmitter or other signal transmitter.

[0036] S2: Set a standard track in front of the installation direction of the track to be tested, and set a reflector on the standard track, with the height of the standard track being lower than the height of the track to be tested;

[0037] The track to be tested needs to be checked for flatness. The standard track is used for alignment and verification. At this time, the standard track is set on the lifting platform plate. The standard track can be regarded as a track that meets the specifications and installation standards of the track to be tested. The standard track is moved to the lower side in front of the track to be tested and can be lifted up under the drive of the lifting platform plate.

[0038] Here, when performing step S2, the reflector is arranged around the outside of the standard track and is perpendicular to the standard track; this is equivalent to arranging a ring of reflectors in a U-shape around the outside of the standard track, with the reflective surface of the reflector facing the track to be tested, for reflecting the signal transmitted by the transmitter on the track to be tested.

[0039] S3: Increase the predetermined height value of the standard track at predetermined intervals, and determine whether the receiver receives the signal emitted by the transmitter; if so, the track under test is installed successfully, and the real-time standard track height value is output; otherwise, proceed to step S4.

[0040] When performing step S3, determine whether all receivers have received the signal emitted by the transmitter; if all receivers have received the signal emitted by the transmitter, the track under test is installed successfully and the real-time standard track height value is output; otherwise, proceed to step S4.

[0041] Furthermore, when executing step S3, after outputting the real-time standard track height value, the following steps are also included: comparing the real-time standard track height value with the expected installation height value, and determining whether the error rate is less than a predetermined threshold. If so, the installation of the track to be tested is confirmed to be qualified, and the installation of the next section of track can begin; otherwise, it is sent to the control terminal for the installation personnel to make adjustments.

[0042] Here, the expected installation height can be understood as the height of the end of the track to be tested that is far from the standard track, which is the height of the front end of the previous track installation. The error rate can actually reflect the slope of the track to be tested after installation in the entire transport track. It needs to be limited to a certain range to avoid the overturning of goods during transport.

[0043] S4: Determine whether the height of the standard track is higher than the height of the track to be tested. If so, the track to be tested is not installed properly, the test is terminated, and an alarm is issued; otherwise, continue to execute step S3.

[0044] Here, when performing step S4, when the detection is terminated, the data from the entire detection process is collected and merged into an alarm signal for issuance.

[0045] The data collected throughout the testing process includes: real-time standard track height values ​​and the real-time status (Yes or No) of each receiver, helping installers quickly determine the cause of calibration test failures.

[0046] This invention provides a simple, convenient, and low-cost method for aligning transport tracks. It can effectively detect the alignment of small suspended transport tracks, and the entire process can be automated. It can also determine whether the track misalignment is due to cross-sectional issues, thus improving the efficiency of track correction and installation.

[0047] Example 2: As before Figure 1 As shown, this is only one embodiment of the present invention. Based on the first embodiment, in the transportation track alignment detection method of the present invention, when performing step S2, the height of the upper end of the standard track is lower than the height of the lower end of the track to be tested.

[0048] Furthermore, when performing step S3, the predetermined height value is not greater than the width of the reflector; this ensures that the standard track does not rise too high each time, causing it to miss the reflector.

[0049] Here, the reflector can be considered to be horizontally positioned outside the standard track.

[0050] When performing step S4, it is determined whether the height of the lower end of the standard track is higher than the height of the upper end of the track to be tested. If so, the track to be tested is not installed properly, the test is terminated, and an alarm is issued; otherwise, step S3 is continued.

[0051] In addition, this application has the following two changes:

[0052] Change 1: The reflector is placed on the track to be tested; the transmitter and receiver are placed on the standard track.

[0053] Change 2: When performing step S2, the height of the standard track is higher than the height of the track to be tested; when performing step S3, the standard track decreases by a predetermined height value at predetermined intervals; in step S4, the detection is terminated only when the height of the standard track is lower than the height of the track to be tested.

[0054] This invention provides a simple, convenient, and low-cost method for aligning transport tracks. It can effectively detect the alignment of small suspended transport tracks, and the entire process can be automated. It can also determine whether the track misalignment is due to cross-sectional issues, thus improving the efficiency of track correction and installation.

[0055] This invention is not limited to the specific embodiments described above, and various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made to the above embodiments based on the technical essence of this invention should be included within the scope of protection of this invention.

Claims

1. A method of detecting alignment of a transport track, characterized by, Includes the following steps: S1: A transmitter and a receiver located behind the transmitter are set on the track to be tested; the transmitter extends forward toward the installation direction of the track to be tested; Several transmitters and receivers located behind the transmitters are evenly arranged around the outside of the track to be tested, and the number of receivers is the same as the number of transmitters. The transmitter is a laser transmitter, and the laser frequencies emitted by any two transmitters are different. Each receiver is used to receive the laser emitted by its corresponding transmitter. S2: Set a standard track in front of the installation direction of the track to be tested, and set a reflector on the standard track, with the height of the standard track being lower than the height of the track to be tested; S3: Increase the predetermined height value of the standard track at predetermined intervals, and determine whether the receiver receives the signal emitted by the transmitter; if so, the track under test is installed successfully, and the real-time standard track height value is output; otherwise, proceed to step S4. When performing step S3, it is determined whether all receivers have received the signal emitted by the transmitter; if all receivers have received the signal emitted by the transmitter, the track under test is installed successfully, and the real-time standard track height value is output. Otherwise, proceed to step S4; When executing step S3, after outputting the real-time standard orbital height value, the following steps are also included: Compare the real-time standard track height value with the expected installation height value to determine whether the error rate is less than the predetermined threshold. If so, the installation of the track to be tested is confirmed to be qualified. Conversely, the error is sent to the control unit for installation personnel to make adjustments. S4: Determine whether the height of the standard track is higher than the height of the track to be tested. If so, the track to be tested is not installed properly, the test is terminated, and an alarm is issued; otherwise, continue to execute step S3.

2. The method for detecting alignment of transport tracks according to claim 1, characterized in that: When performing step S2, the reflector is arranged around the outside of the standard track, and the reflector is arranged perpendicular to the standard track.

3. The method for detecting alignment of transport tracks according to claim 1, characterized in that: When performing step S2, the height of the upper end of the standard track is lower than the height of the lower end of the track to be tested.

4. The method for detecting alignment of transport tracks according to claim 1, characterized in that: When performing step S3, the predetermined height value is not greater than the width of the reflector.

5. The method for detecting alignment of transport tracks according to claim 3, characterized in that: When performing step S4, it is determined whether the height of the lower end of the standard track is higher than the height of the upper end of the track to be tested. If so, the track to be tested is not installed properly, the test is terminated, and an alarm is issued; otherwise, step S3 is continued.

6. The method for detecting alignment of transport tracks according to claim 1, characterized in that: When performing step S4, if the detection is terminated, the data from the entire detection process is collected, merged into an alarm signal, and issued.

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