A wheel axle wireless identification method and device

Abstract

The present invention relates to the field of contactless identification technology, and in particular, to a method and device for wireless identification of axles. Step S11, based on the actual position of the track, a plurality of track position data are obtained; Step S12, based on the signal data group of the label on the axle obtained by the base station when the axle rolls on the track, the actual position data group of the label on the axle is parsed; Step S13, based on the starting coordinates of the center line of the track, the end coordinates of the center line of the track, the signal data group, and the actual position data group of the label, a recognition model is formed; Step S14, based on the signal data group of the label on the axle received by the base station, input into the recognition model, the position data of the label on the axle is obtained; Step S15, based on mapping the position data group within the track plane matching range to the center line of the track, the position data of the axle is obtained. In this way, the problem of inaccurate positioning of the axle on the production line is solved.

Description

Technical Field

[0001] The present invention relates to the field of contactless identification technology, and in particular to a wheel axle wireless identification method and device. Background Art

[0002] The axle is composed of a roller and two rollers installed on both sides of the axle. In the production and assembly of the axle, in order to ensure the continuous efficiency of the assembly line, wireless tags are usually installed on the axle, and a base station is installed above the track of the axle production. The base station receives the wireless signal sent by the axle tag to locate the axle. Strive to accurately control the position of the axle on the assembly line and achieve effective connection for the next assembly task of a single axle product. Ensure that the production capacity of each process on the assembly line is balanced, and the product materials of the current sequence and the subsequent sequence of the production and assembly tasks can be delivered in a timely, accurate and qualified manner according to the beat.

[0003] In the workshop, when the axle is working, it will move along the track. However, because the axle itself has a circular contour, it is very easy to roll on the production and assembly track. At this time, the wheel and axle where the tag is located will also block the tag, and the blocking relationship between the tag and the surrounding base stations will also become random. As a result, the error of the positioning coordinates is also random, and the exact position of the axle cannot be accurately scanned. As a result, the subsequent processes on the assembly line may not be connected in a timely and accurate manner. This increases the risk of high energy and efficiency of production and assembly tasks. Summary of the invention

[0004] In order to solve the problem of inaccurate positioning of axles on a production line, the present invention provides a method and device for wirelessly identifying axles.

[0005] In a first aspect, the present invention provides a method for wirelessly identifying an axle, comprising:

[0006] Step S11, based on the actual position of the track, obtaining a plurality of track position data; wherein the track position data group H includes the starting point coordinates of the track centerline, the end point coordinates of the track centerline, and the track plane matching range;

[0007] Step S12, based on the axle rolling on one of the tracks, obtaining a data group A0 of signals received by all base stations from the tags on the axle, and obtaining a data group P0 of actual positions of the tags on the axle;

[0008] Step S13, forming a recognition model M based on the starting point coordinates of the track centerline, the end point coordinates of the track centerline, the signal data group A0, and the tag actual position data group P0;

[0009] Step S14, based on the triggering of the wheel axle position identification instruction, input the signal data group A1 received by all base stations from the tag on the wheel axle into the identification model M to obtain the position data P1 of the tag on the wheel axle;

[0010] Step S15 , based on the position data P1 of the tag in the track plane matching range, the position data group P1 is mapped to the center line of the track to obtain the position data P2 of the wheel axle.

[0011] In some embodiments, step S13 includes:

[0012] Step S131, based on the axle rolling on one of the tracks, receiving the signal data A0 of the tag on the axle through all base stations, and obtaining the position data P01 of the tag on the axle; wherein the number of the base stations is greater than or equal to 4;

[0013] Step S132, based on the position data P01, obtaining the signal data A01 of the tag on the axle received by the first priority base station; wherein the distance between the position data of the tag obtained after the first priority base station receives the signal data of the tag on the axle and the position data P01 is less than or equal to a first set value D1;

[0014] Step S133, based on the signal data A01, obtain a second priority base station; the second priority base station includes at least two first priority base stations whose first priority base stations receive the signal data A01 of the tag on the wheel axle and obtain the position data of the tag after solving the signal data A01 and the distance between the position data and the center line of the track is less than or equal to the second set value D2;

[0015] Step S134, acquiring position data P02 of the tag on the axle based on the signal data A02 received by the second priority base station;

[0016] Step S135 , forming the recognition model M based on the tag position data group P02 and the tag actual position data group P0 .

[0017] In some embodiments, the step S131 includes:

[0018] Step S1311, based on the axle rolling on one of the tracks, obtaining signal data A0 received by all base stations from the tag on the axle, wherein the number of the base stations is greater than or equal to 4;

[0019] Step S1312: based on the signal data A0, calculate the tag position data P01 of all the base stations receiving the signal data A0.

[0020] In some embodiments, a plane projection of a sphere formed with the position data P01 as the center and the first set value D1 as the radius on the orbital plane matching range at least encompasses a portion of the length of two sides of the orbital plane matching range.

[0021] In some embodiments, twice the second set value D2 is greater than the width of the track plane matching range.

[0022] In some embodiments, step S13 further includes:

[0023] Step S1341, based on the axle rolling on one of the tracks, obtaining a wheel axle posture data group B1 of a posture module on the wheel axle;

[0024] The step S135 includes forming the recognition model M based on the tag position data group P02, the wheel axle posture data group B1, and the tag actual position data group P0.

[0025] In some embodiments, the step S13 further includes:

[0026] Step S1342, based on the axle rolling on one of the tracks, obtaining whether there is any shielding status data Y of other axles in front and behind the axle;

[0027] The step S135 includes forming the recognition model M based on the tag position data group P02, the wheel axle posture data group B1, the occlusion state data Y, and the tag actual position data group P0.

[0028] In some embodiments, the occlusion status data Y includes occlusion status data Y1 that there are no other axles in the front and rear positions of the axle, occlusion status data Y2 that there are other axles only in the front position of the axle, occlusion status data Y3 that there are other axles only in the rear position of the axle, and occlusion status data Y4 that there are other axles both in the front and rear positions of the axle.

[0029] In some embodiments, step S15 includes:

[0030] Step S151, obtaining the track where the wheel axle is located based on the position data P1 of the tag;

[0031] Step S152 , based on the position data P1 of the tag in the track plane matching range of the track where the wheel axle is located, the position data P2 of the wheel axle is acquired by mapping the position data group P1 to the center line of the track.

[0032] In a second aspect, the present invention provides a wheel axle positioning device, wherein the wheel axle positioning device is applied to the wheel axle positioning method of any embodiment of the first aspect, comprising:

[0033] Tracks, a plurality of tracks are arranged at intervals;

[0034] A wheel axle, the wheel axle comprises a roller and a roller; the two rollers are detachably connected to the two ends of the wheel axle respectively; the spacing between the two rollers matches the width of one track; the rollers roll and abut against the track;

[0035] An identification component, the identification component includes a base station, a tag, and a processing unit; the base station is set at a fixed position above the track; the tag is detachably connected to the roller; the base station receives the signal transmitted by the tag; the base station is signal-connected to the processing unit.

[0036] In some embodiments, the recognition component also includes a posture module and an image acquisition module; the posture module is detachably connected to the roller for obtaining the posture of the wheel axle; the posture module is signal-connected to the processing unit; the image acquisition module is signal-connected to the processing unit for obtaining the occlusion state of the wheel axle.

[0037] In order to solve the problem of inaccurate positioning of the axle on the production line, the present invention has the following advantages:

[0038] 1. Improve the positioning algorithm and construct the track position data set based on the starting coordinates, end coordinates and track plane matching range of the track centerline. Set up multiple fixed base stations above the track to obtain the position data set of the axle tag in the working state. Calculate the actual position data set of the axle tag based on this. Use these data sets to establish a digital recognition model. When the axle starts to work on the track, all base stations receive the signal data set of the axle tag and input it into the recognition model, so that the actual position data of the axle tag can be obtained.

[0039] 2. The present invention can accurately control the operating status and position of the wheel axle on the track, and effectively connect the next assembly task of a single wheel axle product. It ensures that the production capacity of each process on the assembly line is in a balanced proportion, and the product materials of the current sequence and the subsequent sequence of the production assembly task can be delivered in a timely, accurate and rhythmic manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A data transmission flow chart of a wheel axle wireless identification method according to an embodiment is shown;

[0041] Figure 2 A schematic diagram of a wireless axle identification device according to an embodiment is shown;

[0042] Figure 3 A partial schematic diagram of a wheel axle wireless identification device according to an embodiment is shown.

[0043] Figure numerals: 01 axle; 11 roller; 12 roller; 02 identification component; 21 base station; 22 tag; 23 processing unit; 24 posture module; 25 image acquisition module; 03 track. DETAILED DESCRIPTION

[0044] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0045] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0046] This embodiment discloses a method for wirelessly identifying a wheel axle. Figure 1 , Figure 2 , Figure 3 As shown, it may include:

[0047] Step S11, based on the actual position of track 03, a plurality of track 03 position data are obtained; wherein the track 03 position data group H includes the starting point coordinates of the center line of track 03, the end point coordinates of the center line of track 03, and the plane matching range of track 03;

[0048] Step S12, based on the axle 01 rolling on a track 03, obtaining the signal data group A0 received by all base stations 21 from the tag 22 on the axle 01, and obtaining the actual position data group P0 of the tag 22 on the axle 01;

[0049] Step S13, forming a recognition model M based on the starting point coordinates of the center line of track 03, the end point coordinates of the center line of track 03, the signal data set A0, and the actual position data set P0 of the tag 22;

[0050] Step S14, based on the axle 01 position identification instruction trigger, input the signal data group A1 received by all base stations 21 from the tag 22 on the axle 01 into the identification model M to obtain the position data P1 of the tag 22 on the axle 01;

[0051] Step S15 , based on the position data P1 of the tag 22 in the plane matching range of the track 03 , the position data P2 of the axle 01 is acquired by mapping the position data group P1 to the center line of the track 03 .

[0052] In this embodiment, if Figure 1 , Figure 2 , Figure 3 As shown, the axle 01 is composed of a roller 11 and two rollers 12 installed on both sides of the axle 01. In the production and assembly of the axle 01, in order to ensure the continuous efficiency of the assembly line, a wireless tag 22 is usually installed on the roller 11, and a base station 21 is installed above the track 03 produced by the axle 01. The base station 21 receives the wireless signal emitted by the axle 01 tag 22 to locate the axle 01. Strive to accurately control the position of the axle 01 on the assembly line and achieve effective connection for the next assembly task of a single axle 01 product. Ensure that the production capacity of each process on the assembly line is in a balanced proportion, and the product materials of the current sequence and the subsequent sequence of the production and assembly tasks can be delivered in a timely, accurate and regular manner. When the axle 01 is operating in the workshop, such as Figure 3As shown, the wheel axle 01 will move along the track 03. However, because the wheel axle 01 itself has a circular profile, it is very easy to roll on the track 03 for production and assembly. At this time, the wheel and axle where the tag 22 is located will also block the tag 22, and the blocking relationship between the tag 22 and the surrounding base stations 21 will become random. As a result, the error of the positioning coordinates will also become random, and the exact position of the wheel axle 01 cannot be accurately scanned.

[0053] In order to solve the problem that the exact position of the axle 01 cannot be accurately scanned, this embodiment provides a method for wirelessly identifying the axle 01. The method for wirelessly identifying the axle 01 may include steps S11 to S15, and each step is described in detail as follows:

[0054] Step S11, during the production of the axle 01, multiple axles 01 are produced simultaneously. In order to improve the production efficiency of the axle 01, multiple tracks 03 will be set in a working area. At the same time, in order to ensure the effective connection of each process in the production process and maximize the production in the working area, each track 03 is set at intervals. In order to accurately identify the position of the axle 01 on each track 03, the position data of each track 03 will be obtained according to the actual position of the track 03. Therefore, the data group of the position of the track 03 is obtained according to the starting coordinates of the center line of the track 03, the end coordinates of the center line of the track 03, and the matching range of the track 03 plane. The matching range of the track 03 plane is to set an error range for the track 03 plane, so as to ensure that even if a measurement error occurs, it can be within the matching range of the track 03 plane. After obtaining such a track 03 position data group H, a reference range is provided for subsequent parameter calculations.

[0055] Step S12, a plurality of base stations 21 for receiving the tag 22 signal can be set above the track 03 area of ​​the production axle 01. At this time, the base station 21 is fixedly installed, and the position coordinates of the base station 21 are constant. After installation, the spatial position coordinates of each base station 21 can be obtained. In the unit length along the track 03, multiple stations for the production of the axle 01 can be set. When the production line is started, the axle 01 will roll along the track 03 driven by external force, and roll to different stations on the track 03 for production operations. When the axle 01 rolls on the corresponding track 03, when the axle 01 reaches a certain position, all the base stations 21 at fixed positions can obtain the relative distance data between the axle 01 tag 22 and these fixed position base stations 21. All base stations 21 above multiple tracks 03 can obtain the data of the relative distance between the axle 01 and the corresponding track 03. These data groups are collectively referred to as A0 data groups. After the relative distance between the axle 01 tag 22 and the base station 21 is obtained, the actual distance position data set P0 of the axle 01 on the track 03 can be obtained based on the position of the starting point coordinates and the end point coordinates of the track 03 .

[0056] Step S13, for a single track 03, the range of the single track 03 is determined based on the starting coordinates and the end coordinates of the center line of the track 03 that the wheel axle 01 in the workshop needs to pass through, and then the wheel axle 01 tag 22 signal data group A0 in the working state collected by the base station 21 at a fixed position above all tracks 03, and the actual position data group P0 of the tag 22 on the wheel axle 01 in the working state that can be calculated based on the wheel axle 01 tag 22 signal data group A0 in the working state and the track 03 position data group H are used to establish a data recognition model M that can cover the range of all tracks 03. In this way, the data information of multiple wheel axles 01 on multiple tracks 03 can be formed into a data recognition model M, that is, the data recognition model M covers all tracks 03. In this way, it can be ensured that multiple tracks 03 and multiple wheel axles 01 in all working ranges can be positioned more accurately.

[0057] Step S14, after the data recognition model M that can cover the plane matching range of all tracks 03 is established, when the axle 01 starts to work on the track 03 in the workshop, the recognition instruction of the position of the axle 01 will be triggered, and the data recognition model starts to work. At this time, all base stations 21 above all tracks 03 can receive the signal of the position of the axle 01 tag 22. Because the positions of all base stations 21 above the tracks 03 are fixed, and the matching range of the track 03 plane is also fixed. At this time, the distance signal data group A1 from the axle 01 tag 22 to the base station 21 received by all base stations 21 is input into the data recognition model M, and the distance position data P1 between the starting coordinates or the end coordinates of the tag 22 on the axle 01 and the center line of the track 03 can be calculated based on the distance between the axle 01 tag 22 and the base station 21.

[0058] Step S15, because the tag 22 is attached to the shaft of the axle 01 during the production of the axle 01, and the tag 22 is small in size, while the axle 01 is large in size, and the base station 21 collects the tag 22 signal of the axle 01 rolling on the track 03, which is prone to errors, so the actual position of the tag 22 cannot be identified as the reference center position of the axle 01. In fact, when the axle 01 is in operation, the axle 01 is rolling on the track 03, and the width of the track 03 is also similar to the width of the axle 01. Therefore, the position data P1 of the tag 22 collected by the base station 21 can be within the matching range of the track 03 plane, and the corresponding position data P1 can be mapped to the center line of the track 03 corresponding to the position data P1, so that the position data P2 of the axle 01 can be obtained, which is convenient for positioning the axle 01, so as to track the production process of the axle 01.

[0059] In some embodiments, Figure 2 As shown, step S13 includes:

[0060] Step S131, based on the axle 01 rolling on a track 03, the signal data A0 of the tag 22 on the axle 01 is received by all base stations 21, and the position data P01 of the tag 22 on the axle 01 is obtained; wherein the number of base stations 21 is greater than or equal to 4;

[0061] Step S132, based on the position data P01, obtaining the signal data A01 of the tag 22 on the axle 01 received by the first priority base station 21; wherein the distance between the position data of the tag 22 obtained by the first priority base station 21 after receiving the signal data of the tag 22 on the axle 01 and the position data P01 is less than or equal to the first set value D1;

[0062] Step S133, based on the signal data A01, obtain the second priority base station 21; the second priority base station 21 includes at least two first priority base stations 21 receiving the signal data A01 of the tag 22 on the axle 01 and solving the obtained position data of the tag 22 and the first priority base station 21 whose distance from the center line of the track 03 is less than or equal to the second set value D2;

[0063] Step S134, based on the signal data A02 of the tag 22 on the axle 01 received by the second priority base station 21, the position data P02 of the tag 22 on the axle 01 is obtained;

[0064] Step S135 , forming a recognition model M based on the position data group P02 of the tag 22 and the actual position data group P0 of the tag 22 .

[0065] In this embodiment, step S13 may include steps S131 to S135:

[0066] Step S131, under the production demand of the axle 01 in the workshop that needs to have production capacity, a plurality of tracks 03 are set up in the production workshop of the axle 01. Such a plurality of tracks 03 can greatly improve the production output of the axle 01 per unit time. Because the production process of the axle 01 involves multiple preceding and subsequent processes, these tracks 03 all have a certain length. In the workshop, more than or equal to 4 base stations 21 are set above the tracks 03 where the axle 01 is produced. These more than or equal to 4 base stations 21 are arranged in an array on the roof above the track 03 (along the length direction and width direction of the track 03 at the same time). In this way, it can be effectively ensured that during the production process of the axle 01, when rolling on the track 03, the signal data A0 of the axle 01 tags 22 in operation on all tracks 03 can be received through all base stations 21 in a multi-point and multi-coverage manner, and then the actual position data P01 of the axle 01 tags 22 can be calculated according to the data model M.

[0067] Step S132, because multiple base stations 21 are arranged above the track 03 where the axle 01 is produced, and the production workshop of the axle 01 is provided with multiple tracks 03. Therefore, when the axle 01 is in production, there are many base stations 21 above all the tracks 03 in the workshop. When the axle 01 is in operation on the track 03, many base stations 21 above all the tracks 03 can synchronously receive the position data on many axle 01 tags 22. At this time, the priority of these base stations 21 can be set according to the position data P01 of the axle 01 tag 22, and the signal data A01 of the first priority axle 01 tag 22 is received from the position data P01 of the axle 01 tag 22 according to the first priority base station 21. Moreover, in order to prevent the base station 21 from receiving the signal data A01 with errors, the distance between the acquired axle 01 tag 22 position data and the position data of P01 can be less than or equal to a set value D1. Thus, the setting of the first priority base station 21 is ensured.

[0068] Step S133, the axle 01 is always in a rolling forward state on the track 03, and the rolling at this time has a certain speed. Therefore, at a certain speed, it is easy to be blurred and inaccurate to rely solely on the first priority base station 21 to obtain the data position of the axle 01 tag 22. Moreover, if during the operation of the axle 01 on the track 03, the axle 01 tag 22 happens to be under the axle 01 during the rolling of the axle 01, or is blocked by the two rollers 12 on both sides of the axle 01, at this time, the first priority base station 21 may not be able to obtain the accurate position data of the axle 01 tag 22. In order to ensure the accuracy of the position data of the axle 01, a second priority base station 21 is set based on the first priority base station 21 (the second priority base station 21 is calculated by solving the signal data A01 of the tag 22 on the axle 01 received by at least two first priority base stations 21, and the distance between the position data of the tag 22 and the center line of the track 03 is less than or equal to the second set value D2, where the D1 setting value needs to cover the width of both sides of the track 03, and the D2 setting value is the width of the track 03, so the D2 setting value is slightly smaller than D1).

[0069] Step S134, when the axle 01 starts to operate on the track 03 in the production area, at this time, all base stations 21 above the track 03 can start to receive the position signal of the axle 01 tag 22. After the first priority base station 21 obtains the position signal of the axle 01 tag 22, the data model can solve and obtain the actual position data of the axle 01 tag 22 according to the signal data A01 of the axle 01 tag 22 received by at least two first priority base stations 21. Then, the second priority base station 21 can be automatically selected based on the information that the distance between the actual position data of the axle 01 tag 22 and the center line of the track 03 is less than or equal to the second set value D2. After receiving the signal data A02 of the axle 01 tag 22, the set second priority base station 21 can calculate the distance from the axle 01 tag 22 to the center line of the track 03 according to the distance signal data A02 of the axle 01 tag 22 obtained by the second priority base station 21, thereby obtaining the actual position data P02 of the axle 01 tag 22.

[0070] Step S135, the original data recognition model M is established by calculating the actual position data group P0 of the tag 22 on the axle 01 in the working state through the signal data group A0 of the tag 22 on the axle 01 in the working state collected by the base station 21 at a fixed position above all tracks 03 and the track 03 position data group H. Such a data recognition model covers all tracks 03. The second priority base station 21 obtains the position data group P02 based on the tag 22 and the relative distance between the axle 01 tag 22 and the base station 21 and the position of the starting point coordinates and the end point coordinates of the track 03, and solves the actual distance position data group P0 of the axle 01 on the track 03 to form a more accurate recognition model M.

[0071] In some embodiments, Figure 2 , Figure 3 As shown, step S131 includes:

[0072] Step S1311, based on the axle 01 rolling on a track 03, obtaining the signal data A0 received by all base stations 21 from the tag 22 on the axle 01; wherein the number of base stations 21 is greater than or equal to 4;

[0073] Step S1312, based on the signal data A0, calculate the position data P01 of the tags 22 of all base stations 21 receiving the signal data A0.

[0074] In this embodiment, because the axle 01 is in a rolling forward state on the track 03, a single base station 21 cannot accurately determine the exact position of the rolling axle 01. In addition, in order to ensure efficient production capacity, the production workshops of the axle 01 are all set up with multiple tracks 03, and a single base station 21 cannot accurately capture the exact position of the axle 01 label 22 on the multiple tracks 03. In order to solve the problem of not being able to accurately scan the exact position of the axle 01, in this embodiment, a multi-base station 21, multi-signal group base station 21 system is provided. This multi-base station 21, multi-signal group base station 21 system can include steps S1311 and S1312, and each step is described in detail as follows:

[0075] Step S1311, because the axle 01 is in a rolling forward state on the track 03, a single base station 21 cannot accurately determine the exact position of the rolling axle 01, and in order to ensure efficient production capacity, multiple tracks 03 are set in the production area of ​​the axle 01. At this time, a single base station 21 cannot accurately obtain the exact positions of multiple axle 01 tags 22 on the multiple tracks 03. Therefore, more than or equal to 4 base stations 21 can be set above the track 03 of the axle 01 to receive the signal data A0 of the axle 01 tag 22 operating on the track 03.

[0076] Step S1312, in order to prevent the axle 01 from rolling on the track 03, it is easy for the tag 22 to be disturbed below the axle 01 and errors in the signal of the axle 01 tag 22 received by a single base station 21 to receive the axle 01 tag 22 signal by a single base station 21 to prevent the axle 01 from rolling on the track 03. More than or equal to 4 base stations 21 are set above all tracks 03 in the axle 01 production area to receive the position data A0 of the axle 01 tag 22 when the axle 01 rolls on the track 03, and then calculate the distance from the starting coordinates or the end coordinates of the track 03 based on the position data A0 to calculate the actual position data P01 of the axle 01 tag 22 in the working state on the track 03.

[0077] In some embodiments, the plane projection of a sphere formed with the position data P01 as the sphere center and the first set value D1 as the radius on the track 03 plane matching range at least encompasses a partial length of two sides of the track 03 plane matching range.

[0078] In this embodiment, due to the production capacity requirements of the axle 01, the production area of ​​the axle 01 is set up with multiple tracks 03. When the axle 01 is operating on multiple tracks 03, when more than or equal to 4 base stations 21 above the track 03 receive the signal of the axle 01 tag 22, combined with the actual position data P01 of the axle 01 tag 22 calculated by the starting center or the end center of the track 03, the calculated data recognition model has a wide range. In order to more accurately locate the axle 01 tag 22, the data recognition model can work more accurately. The actual position data P01 of the axle 01 tag 22 can be used as the center of the sphere, and the distance between the position data of the tag 22 obtained by the first priority base station 21 and the calculated actual position data P01 of the tag 22 is set to be less than or equal to the first set value D1 as the radius, forming a virtual sphere, and projecting the sphere onto the plane matching range of the track 03 where it is located (at least the length of the two sides of the plane matching range of the track 03 is required to be included).

[0079] In some embodiments, twice the second set value D2 is greater than the width of the plane matching range of track 03 .

[0080] In this embodiment, it is considered that the operating state of the axle 01 is in a rolling state with a certain speed on the track 03, and during the rolling of the axle 01, the axle 01 tag 22 may be below the axle 01, or the signal may be blocked by the rollers 12 on both sides of the axle 01. In this case, the first priority base station 21 is prone to interference and deviation when obtaining the distance position signal of the axle 01 tag 22. In order to more accurately locate the axle 01 tag 22 and make the data recognition model work more accurately. The second priority base station 21 can be automatically screened out based on the information that the actual position data of the axle 01 tag 22 is less than or equal to the second set value D2 from the center line of the track 03. At this time, twice the second set value D2 needs to be greater than the width of the track 03 plane matching range.

[0081] In some embodiments, step S13 further includes:

[0082] Step S1341, based on the axle 01 rolling on a track 03, obtaining the axle 01 posture data group B1 of the posture module 24 on the axle 01;

[0083] Step S135 includes forming a recognition model M based on the position data group P02 of the tag 22 , the posture data group B1 of the wheel axle 01 , and the actual position data group P0 of the tag 22 .

[0084] In this embodiment, step S13 of the wheel axle 01 wireless identification method may include step S1341 and step S135, and each step is described in detail as follows:

[0085] Step S1341, in order to improve efficiency, increase production capacity and ensure the preceding and following production tasks, the production operation area of ​​the axle 01 is arranged with multiple tracks 03. Moreover, on a single track 03 of these multiple tracks 03, not only one axle 01 is operating per unit time, but there will be a next axle 01 operating on the track 03 at a certain interval. Moreover, because the axle 01 label 22 is attached to the axle 01, and the axle 01 is in a rolling state on the track 03, the rolling axle 01 label 22 may be in a posture of being blocked by the axle 01 or not blocked by the axle 01, and these two postures form a posture data group B1 on the track 03.

[0086] Step S135, because the wheel axle 01 tag 22 is attached to the wheel axle 01, and the working state of the wheel axle 01 on the track 03 is rolling, the posture data group B1 of the rolling wheel axle 01 on the track 03 includes the state of blocking the tag 22 data group Y and not blocking the tag 22. After the base station 21 above the track 03 determines the second priority base station 21, it obtains the actual position P02 of the wheel axle 01 in the working state on the track 03, the posture data group B1 of the wheel axle 01, and the actual position data group P0 of the tag 22 on the track 03 (calculated by the base station 21 above the track 03 after receiving the distance data signal of the wheel axle 01 tag 22 on the track 03 and the starting coordinates or the end coordinates of the center line of the track 03), which can be combined to form a more accurate recognition model M.

[0087] In some embodiments, step S13 further includes:

[0088] Step S1342, based on the axle 01 rolling on a track 03, obtaining whether there is any shielding state data Y of other axles 01 in front and behind the axle 01;

[0089] Step S135 includes forming a recognition model M based on the position data group P02 of the tag 22 , the posture data group B1 of the axle 01 , the occlusion state data Y, and the actual position data group P0 of the tag 22 .

[0090] In this embodiment, step S13 of the wheel axle 01 wireless identification method may include step S1342 and step S135, and each step is described in detail as follows:

[0091] Step S1342, in order to improve efficiency, increase production capacity and ensure the preceding and following production tasks, the production operation area of ​​the axle 01 is arranged with multiple tracks 03. Moreover, on a single track 03 of these multiple tracks 03, not only one axle 01 is operating per unit time, but there will be a next axle 01 operating on the track 03 at a certain interval. Therefore, when the axle 01 starts to roll on the track 03 during the production operation, the signal data sent by the axle 01 tag 22 may be blocked by other axles 01 in front or behind when it is received by the base station 21 above the track 03. Therefore, the base station 21 needs to obtain the blocking status data Y of other axles 01 in front and behind the axle 01, so as to effectively screen the accuracy of the obtained axle 01 tag 22 position data.

[0092] Step S135, because the wheel axle 01 tag 22 is attached to the wheel axle 01, and the working state of the wheel axle 01 on the track 03 is rolling, the posture data group B1 of the rolling wheel axle 01 on the track 03 includes the state of blocking the tag 22 data group Y and not blocking the tag 22. After the base station 21 above the track 03 determines the second priority base station 21, it obtains the actual position P02 of the wheel axle 01 in the working state on the track 03, the posture data group B1 of the wheel axle 01, the blocking state data Y of the wheel axle 01, and the actual position data group P0 of the tag 22 on the track 03 (calculated by the base station 21 above the track 03 after receiving the distance data signal of the wheel axle 01 tag 22 on the track 03 and the starting coordinates or the end coordinates of the center line of the track 03), which can be combined to form a more accurate recognition model M.

[0093] In some embodiments, the occlusion status data Y includes occlusion status data Y1 that no other axles 01 exist in the front and rear positions of the axle 01, occlusion status data Y2 that other axles 01 exist only in the front position of the axle 01, occlusion status data Y3 that other axles 01 exist only in the rear position of the axle 01, and occlusion status data Y4 that other axles 01 exist in both the front and rear positions of the axle 01.

[0094] In this embodiment, in order to improve efficiency, increase production capacity and ensure the preceding and following production tasks, the production operation area of ​​the axle 01 is arranged with multiple tracks 03. Moreover, on a single track 03 of these multiple tracks 03, not only one axle 01 is operating per unit time, but there will be a next axle 01 operating on the track 03 at a certain interval. Therefore, when the axle 01 starts to roll on the track 03 during the production operation, the signal data sent by the tag 22 of the axle 01 may be blocked by other axles 01 in front or behind when it is received by the base station 21 above the track 03. The occlusion status data Y emitted by the axle 01 tag 22 may include four situations: occlusion status data Y1 of no other axles 01 in the front and rear positions of the axle 01; occlusion status data Y2 of other axles 01 only in the front position of the axle 01; occlusion status data Y3 of other axles 01 only in the rear position of the axle 01; and occlusion status data Y4 of other axles 01 both in the front and rear positions of the axle 01.

[0095] In some embodiments, step S15 includes:

[0096] Step S151, based on the position data P1 of the tag 22, obtaining the track 03 where the wheel axle 01 is located;

[0097] Step S152 , based on the track 03 plane matching range of the position data P1 of the tag 22 in the track 03 where the wheel axle 01 is located, the position data P2 of the wheel axle 01 is acquired by mapping the position data group P1 to the center line of the track 03 .

[0098] In this embodiment, step S15 may include step S151 and step S152, the specific contents of which are as follows:

[0099] Step S151, the axle 01 is composed of an axle and two rollers 12 respectively installed on both sides of the axle 01. In order to maximize the production of high capacity and high efficiency, multiple tracks 03 are set in the production operation area of ​​the axle 01. In the production and assembly of the axle 01, in order to ensure the continuous efficiency of the assembly line, a wireless tag 22 is usually installed on the axle 01, and a base station 21 is installed above the track 03 produced by the axle 01. The base station 21 receives the wireless signal emitted by the axle 01 tag 22 to locate the axle 01. Strive to accurately control the position of the axle 01 on the assembly line and achieve effective connection for the next assembly task of a single axle 01 product. Ensure that the production capacity of each process on the assembly line is balanced, and the product materials of the current sequence and the subsequent sequence of the production and assembly task can be delivered in a timely, accurate and qualified manner. When the axle 01 is operating in the workshop, it will move along the track 03 where it is located. However, because the product characteristics of the axle 01 itself are circular, it is very easy to roll on the track 03 for production and assembly. At this time, the wheel and axle where the tag 22 is located will also block the tag 22, and the blocking relationship between the tag 22 and the surrounding base stations 21 is also random. As a result, the error of the positioning coordinates is also very random, and the exact position of the axle 01 cannot be accurately scanned. The range of a single track 03 is determined based on the starting coordinates and the end coordinates of the center line of the track 03 that the axle 01 needs to pass through in the workshop, and then the axle 01 tag 22 signal data group A0 in the working state collected by the base station 21 at a fixed position above all tracks 03, and the actual position data group P0 of the tag 22 on the axle 01 in the working state can be calculated based on the axle 01 tag 22 signal data group A0 in the working state and the track 03 position data group H to establish a data recognition model M that can cover the range of all tracks 03. After the data recognition model M that can cover the plane matching range of all tracks 03 is established, when the axle 01 starts working on the track 03 in the workshop, the recognition instruction of the position of the axle 01 will be triggered, and the data recognition model starts working. At this time, all base stations 21 above all tracks 03 can receive the signal of the position of the axle 01 tag 22. Because the positions of all base stations 21 above the tracks 03 are fixed, and the matching range of the track 03 plane is also fixed. At this time, the distance signal data group A1 from the axle 01 tag 22 to the base station 21 received by all base stations 21 is input into the data recognition model M, and the distance position data P1 between the tag 22 on the axle 01 and the starting coordinates or the end coordinates of the center line of the track 03 can be calculated based on the distance between the axle 01 tag 22 and the base station 21. According to the actual position P1 of the axle 01 tag 22, it can be known on which track 03 the axle 01 is working.

[0100] Step S152, in order to ensure high production capacity and high efficiency of the axle 01 production, as well as the effective connection between the preceding and following processes, multiple tracks 03 are set in the axle 01 production area. Therefore, when the base station 21 obtains the position data of the axle 01 tag 22, it is easy to determine which track 03 the position data transmitted by the axle 01 tag 22 is on. At this time, according to the actual position P1 of the axle 01 tag 22, the data model M can calculate the plane matching range on which track 03 the axle 01 tag 22 is located. Then, by mapping the actual position P1 of the axle 01 tag 22 to the center line of the track 03 on which it is located, the actual position data P2 of the axle 01 tag 22 can be obtained.

[0101] In some embodiments, track 03, multiple tracks 03 are arranged at intervals; axle 01, axle 01 includes roller 12 and roller 11; two rollers 12 are detachably connected to two ends of axle 01 respectively; the spacing between two rollers 12 matches the width of a track 03; roller 12 rolls and abuts against track 03; identification component 02, identification component 02 includes base station 21, tag 22, processing unit 23; base station 21 is set at a fixed position above track 03; tag 22 is detachably connected to roller 11; base station 21 receives signals emitted by tag 22; base station 21 is signal-connected to processing unit 23.

[0102] In this embodiment, the production workshop of the axle 01 is arranged with multiple axle 01 production tracks 03, and the axle 01 will be produced on these tracks 03. The structure of the axle 01 is composed of two parts: rollers 12 and rollers 11. The rollers 12 are disc-shaped and are respectively located at the two ends of the axle 01, and can be detachably connected with the rollers 11. Moreover, the spacing between the two rollers 12 matches the width of a track 03. At the same time, during the production process of the axle 01, the rollers 12 will roll on the track 03 and contact the track 03 when rolling. The axle 01 is cylindrical, and the two ends of the axle 01 can be detachably connected with the rollers 12. This means that the state of the axle 01 on the track 03 is that the axle 01 falls on the working plane of the track 03, and the rollers 12 on both sides are located on both sides of the track 03. In addition, a detachable tag 22 is also installed on the axle 01 to transmit the position signal of the axle 01 on the track 03. At the same time, multiple base stations 21 are set on the top surface of the workshop above the track 03 to receive the position signal emitted by the axle 01 tag 22, and a processing unit 23 is installed on the side wall of the workshop. The processing unit 23 is used to process the signal received by the base station 21 and generate a digital model, so as to accurately determine the precise position information of the axle 01 during the operation of the track 03.

[0103] In some embodiments, the recognition component 02 also includes a posture module 24 and an image acquisition module 25; the posture module 24 is detachably connected to the roller 12, and is used to obtain the posture of the axle 01; the posture module 24 is signal-connected to the processing unit 23; the image acquisition module 25 is signal-connected to the processing unit 23, and is used to obtain the occlusion state of the axle 01.

[0104] In this embodiment, the recognition component 02 includes an image acquisition module 25 located on the top surface above the track 03 in the production workshop of the axle 01 and a tag 22 posture module 24 located on the roller 11 of the axle 01. Among them, the posture module 24 is integrated in the tag 22 of the roller 11 of the axle 01, and can identify the position state of the axle 01 on the workshop track 03 and emit a position signal. After the position signal is emitted, it is received and processed by the processing unit 23 arranged on the side of the axle 01 production workshop. The processing unit 23 and the signal of the posture module 24 are interconnected. The image acquisition module 25 is arranged on the top surface of the workshop above the track 03 of the production workshop of the axle 01. The image acquisition module 25 is used to obtain the posture position of the axle 01 on the track 03 and send the position signal to the processing unit 23. After receiving the posture position signal of the axle 01, the processing unit 23 analyzes and obtains the occlusion state of the axle 01. This prevents the axle 01 label 22 from being blocked during the production of the axle 01, resulting in improper connection with subsequent processes, thereby effectively ensuring the accurate capture of the position information of the axle 01 on the axle 01 track 03 and ensuring the high energy, high efficiency and high production requirements of the axle 01.

[0105] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present disclosure.

Claims

1. A wheel axle wireless identification method, characterized in that: The axle wireless identification method comprises: Step S11, based on the actual position of the track, obtaining a plurality of track position data; wherein the track position data group H includes the starting point coordinates of the track centerline, the end point coordinates of the track centerline, and the track plane matching range; Step S12, based on the axle rolling on one of the tracks, obtaining a signal data group A0 of all base stations receiving the tag on the axle, and obtaining an actual position data group P0 of the tag on the axle; wherein the number of base stations is greater than or equal to 4; Step S13, forming a recognition model M based on the starting coordinates of the track centerline, the end coordinates of the track centerline, the signal data group A0, and the tag actual position data group P0; wherein the tag actual position data group P0 is calculated by the signal data group A0 and the track position data group H collected by a base station at a fixed position above the track; the data recognition model M covers all tracks; Step S14, based on the triggering of the wheel axle position identification instruction, input the signal data group A1 received by all base stations from the tag on the wheel axle into the identification model M to obtain the position data P1 of the tag on the wheel axle; Step S15, based on the position data P1 of the tag in the track plane matching range, by mapping the position data group P1 to the center line of the track, obtaining the position data P2 of the wheel axle; The step S15 comprises: Step S151, obtaining the track where the wheel axle is located based on the position data P1 of the tag; Step S152 , based on the track plane matching range of the position data P1 of the tag in the track where the wheel axle is located, the position data P2 of the wheel axle is acquired by mapping the position data group P1 to the center line of the track.

2. A wheel axle wireless identification method according to claim 1, characterized in that: The step S13 comprises: Step S131, based on the axle rolling on one of the tracks, receiving the signal data A0 of the tag on the axle through all base stations, and obtaining the position data P01 of the tag on the axle; wherein the number of the base stations is greater than or equal to 4; Step S132, based on the position data P01, obtaining the signal data A01 of the tag on the axle received by the first priority base station; wherein the distance between the position data of the tag obtained after the first priority base station receives the signal data of the tag on the axle and the position data P01 is less than or equal to a first set value D1; Step S133, based on the signal data A01, obtain a second priority base station; the second priority base station includes at least two first priority base stations whose first priority base stations receive the signal data A01 of the tag on the wheel axle and obtain the position data of the tag after solving the signal data A01 and the distance between the position data and the center line of the track is less than or equal to the second set value D2; Step S134, acquiring position data P02 of the tag on the axle based on the signal data A02 received by the second priority base station; Step S135 , forming the recognition model M based on the tag position data group P02 and the tag actual position data group P0 .

3. A wheel axle wireless identification method according to claim 2, characterized in that: The step S131 includes: Step S1311, based on the axle rolling on one of the tracks, obtaining signal data A0 received by all base stations from the tag on the axle, wherein the number of the base stations is greater than or equal to 4; Step S1312: based on the signal data A0, calculate the tag position data P01 of all the base stations receiving the signal data A0.

4. A wheel axle wireless identification method according to claim 2, characterized in that: The plane projection of a sphere formed with the position data P01 as the sphere center and the first set value D1 as the radius on the track plane matching range at least encompasses a partial length of two side edges of the track plane matching range.

5. A wheel axle wireless identification method according to claim 2, characterized in that: Twice the second set value D2 is greater than the width of the track plane matching range.

6. A wheel axle wireless identification method according to claim 2, characterized in that: The step S13 further includes: Step S1341, based on the axle rolling on one of the tracks, obtaining a wheel axle posture data group B1 of a posture module on the wheel axle; The step S135 includes forming the recognition model M based on the tag position data group P02, the wheel axle posture data group B1, and the tag actual position data group P0.

7. A wheel axle wireless identification method according to claim 6, characterized in that: The step S13 further includes: Step S1342, based on the axle rolling on one of the tracks, obtaining whether there is any shielding status data Y of other axles in front and behind the axle; The step S135 includes forming the recognition model M based on the tag position data group P02, the wheel axle posture data group B1, the occlusion state data Y, and the tag actual position data group P0.

8. A wheel axle wireless identification method according to claim 7, characterized in that: The occlusion status data Y includes occlusion status data Y1 when there are no other axles in front and rear of the axle, occlusion status data Y2 when there are other axles only in front of the axle, occlusion status data Y3 when there are other axles only in the rear of the axle, and occlusion status data Y4 when there are other axles both in front and rear of the axle.

9. A wheel axle wireless identification device, characterized in that: The axle wireless identification device is applied to the axle wireless identification method described in any one of claims 1 to 8, and the axle wireless identification device includes: Tracks, a plurality of tracks are arranged at intervals; A wheel axle, the wheel axle comprises a roller and a roller; the two rollers are detachably connected to the two ends of the wheel axle respectively; the spacing between the two rollers matches the width of one track; the rollers roll and abut against the track; An identification component, the identification component includes a base station, a tag, and a processing unit; the base station is set at a fixed position above the track; the tag is detachably connected to the roller; the base station receives the signal transmitted by the tag; the base station is signal-connected to the processing unit.

10. The wheel axle wireless identification device according to claim 9, characterized in that: The recognition component also includes a posture module and an image acquisition module; the posture module is detachably connected to the roller and is used to obtain the posture of the wheel axle; the posture module is signal-connected to the processing unit; the image acquisition module is signal-connected to the processing unit and is used to obtain the occlusion state of the wheel axle.

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