Position feedback device
By using a combination of a rotor slide, a stator magnet and an RFID electronic tag in the position feedback device, the problem of long-term zeroing of traditional sensors is solved, and rapid zeroing and position determination is achieved, which improves production efficiency and reduces fault handling. downtime.
Patent Information
- Application Number
- CN202421183292.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-28
AI Technical Summary
Traditional relative position sensors need to find the origin for a long time when powering on the equipment, resulting in a heavy shutdown during fault handling in production, affecting production efficiency and possibly causing workpieces to be scrapped and cost-effective.
A position feedback device including a rotor slide rail, a stator magnet, an RFID electronic tag and a reading and writing module is designed. The Z signal is outputted by the reading head and the current position of the rotor is determined through the RFID reading and writing module. Reduce repetitive exercises.
The rapid return to zero positioning and position determination of the motor is achieved, which reduces downtime, improves production efficiency, and avoids repeated processing of workpieces and increases in costs.
Smart Images
Figure CN222337646U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a feedback device, in particular to a position feedback device. Background Art
[0002] The position feedback function of the automated production line is particularly important. At present, relative position sensors are generally used to achieve this function. However, when the relative sensor is powered on, the position of the mover needs to find the origin and return to zero as a whole. The response time is relatively long. Some application scenarios in actual production do not allow such a long response time. For example, if a fault occurs during the production process and the machine is shut down to troubleshoot, the traditional relative position sensor needs to find the zero position again, that is, return to the origin. The mover needs to return from the current position to the initial position and then return to the current position again. The movers at other stations on the production line also need to stop and move to make way. This will seriously affect production efficiency and may even cause the workpiece to be processed on the mover to undergo reprocessing at the previous stations again, resulting in the scrapping of the workpiece and increased costs. Therefore, the development of a position feedback device has become an urgent problem to be solved by those skilled in the art. Utility Model Content
[0003] The utility model provides a position feedback device in order to solve the above-mentioned shortcomings.
[0004] The above-mentioned purpose of the utility model is achieved through the following technical scheme: a position feedback device, including a base, on which a mover slide rail and stator magnets evenly distributed on the base are provided, on which a mover that can move on the mover slide rail is installed, and on which a fixed bracket arranged along the direction of the mover slide rail is provided on the base, on which RFID electronic tags are evenly distributed, and the RFID electronic tags are evenly distributed along the direction of the mover slide rail, and correspond one-to-one with the stator magnets evenly distributed on the base, and the content of each RFID electronic tag is unique (in short, the RFID electronic tag is to mark each stator magnet), and on which a reading head cooperating with the stator magnet and an RFID reading and writing module cooperating with the RFID electronic tag are provided on the mover.
[0005] Furthermore, the position feedback device also includes a host computer, a master station controller and a slave station controller, the host computer is connected to the master station controller, the master station controller is wirelessly connected to the slave station controller, and the slave station controller is connected to the RFID read-write module.
[0006] Furthermore, the host computer is a PC industrial computer.
[0007] Furthermore, the RFID electronic tag is fixed on a tag fixing plate, the tag fixing plate is fixed on a fixing bracket, and the fixing bracket is parallel to the mover slide rail.
[0008] Furthermore, the width of the stator magnet and the RFID electronic tag is 10-14 mm, preferably 12 mm.
[0009] Furthermore, a packaging shell is provided for every 12 stator magnets, and the 12 stator magnets are packaged as a group.
[0010] Furthermore, a mover power supply device is provided on the fixed bracket.
[0011] The advantages of the present invention compared with the prior art are: the control of the host computer of the present invention determines the zero position of the mover through the Z signal output by the reading head after each stator magnet moves, and the mover only needs to move within a short distance (generally about 12 mm) to quickly complete the return to zero positioning, and then the host computer sends instructions again to read the RFID electronic tag content through the RFID reading and writing module to determine the current position of the mover. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] Figure 2 yes Figure 1 A partial enlargement of the center left part.
[0014] Figure 3 It is a schematic diagram of the packaging structure of the stator magnet in the utility model.
[0015] Figure 4 It is a control principle diagram of the utility model. DETAILED DESCRIPTION
[0016] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0017] like Figures 1 to 4 As shown, a position feedback device includes a base 1, on which a mover slide rail 2 and stator magnets 3 evenly distributed on the base 1 are provided, and a packaging shell 4 is provided for every 12 stator magnets 3, which are packaged as a group. A mover 5 that can move on the mover slide rail 2 is installed on the mover slide rail 2, and a fixed bracket 6 arranged along the direction of the mover slide rail 2 is provided on the base 1, and a mover power supply device 7 is provided on the fixed bracket 6, and RFID electronic tags 8 are evenly distributed on the fixed bracket 6, and the RFID electronic tags 8 are fixed on a tag fixing plate 9, and the tag fixing plate 9 is fixed on the fixed bracket 6, and the fixed bracket 6 is parallel to the mover slide rail 2, and the RFID electronic tags 8 are evenly distributed along the direction of the mover slide rail 2, and correspond one by one to the stator magnets 3 evenly distributed on the base 1, and the width of the stator magnet 3 and the RFID electronic tags 8 is 12mm, and the mover 5 is provided with a reading head 10 matched with the stator magnet 3, and an RFID reading and writing module 11 matched with the RFID electronic tags 8.
[0018] The position feedback device also includes a PC industrial computer 12, a master station controller 13 and a slave station controller 14. The PC industrial computer 12 is connected to the master station controller 13 by wire, the master station controller 13 is connected to the slave station controller 14 by wireless communication, and the slave station controller 14 is connected to the RFID read-write module 11 by cable.
[0019] like Figures 1 to 4 As shown, the RFID electronic tag of the utility model is to mark each stator magnet, and the reading head 10 will output a Z signal every time it moves a stator magnet. When it is necessary to initialize the return to zero, the host computer sends an instruction to first let the mover move within a short distance (generally about 12mm) and output a Z signal. The PC industrial computer determines the zero position of the mover by obtaining the Z signal of the reading head, thereby quickly completing the return to zero positioning. After the return to zero positioning, the PC industrial computer 12 sends an instruction to the master station controller 13. After the master station controller 13 receives the instruction, it is transparently transmitted to the slave station controller 14. After the slave station controller 14 receives the instruction, it sends the instruction to the RFID read-write module 11. After receiving the instruction, the RFID read-write module 11 starts to read the content of the RFID electronic tag 8. After the RFID read-write module 11 reads the content of the RFID electronic tag 8, it returns it to the PC industrial computer 12. The PC industrial computer 12 performs data analysis and processing, and can determine the current position of the mover, and then continue the subsequent processing flow according to the current position of the workpiece, without returning to the initial position of the entire processing flow.
[0020] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A position feedback device, comprising a base, on which a mover slide rail and stator magnets evenly distributed on the base are provided, on which a mover that can move on the mover slide rail is installed, and on which a fixing bracket arranged along the direction of the mover slide rail is provided, characterized in that: RFID electronic tags are evenly distributed on the fixed bracket, and the RFID electronic tags are evenly distributed along the direction of the mover slide rail and correspond one by one to the stator magnets evenly distributed on the base. The mover is provided with a reading head that cooperates with the stator magnet, and an RFID reading and writing module that cooperates with the RFID electronic tags.
2. A position feedback device according to claim 1, characterized in that: The position feedback device also includes a host computer, a master station controller and a slave station controller. The host computer is connected to the master station controller, the master station controller is wirelessly connected to the slave station controller, and the slave station controller is connected to the RFID read-write module.
3. A position feedback device according to claim 2, characterized in that: The host computer is a PC industrial computer.
4. A position feedback device according to claim 1, characterized in that: The RFID electronic tag is fixed on a tag fixing plate, the tag fixing plate is fixed on a fixing bracket, and the fixing bracket is parallel to the mover slide rail.
5. A position feedback device according to claim 1, characterized in that: The width of the stator magnet and the RFID electronic tag is 10-14 mm.
6. A position feedback device according to claim 1, characterized in that: The width of the stator magnet and the RFID electronic tag is 12 mm.
7. A position feedback device according to claim 1, characterized in that: A packaging shell is provided for every 12 stator magnets, and the packaging forms a group.
8. A position feedback device according to claim 1, characterized in that: The fixed bracket is provided with a mover power supply device.