Long-distance identification system for planing tool bit

Abstract

The invention relates to a long-distance identification system for a planing tool bit. The long-distance identification system comprises an RFID chip, an RFID module, a coaxial cable and an FPC antenna substrate, the RFID module is in communication connection with the control module through an I / O interface and is connected with the FPC antenna substrate through a coaxial cable. The coaxial cable comprises a connector, a coaxial line and a shielding line; the FPC antenna substrate is arranged to be in a cylindrical shape adaptive to the shape of the planer handle and is installed in the planer handle framework. The RFID chip is arranged on the tool bit label and used for being started when the tool bit label is inserted into the planer handle, matching the RFID chip with the RFID module and sending the label content to the RFID module; the RFID module is used for sending the tag content to the control module; and the control module is used for receiving the label content and identifying and verifying the label content. According to the invention, the FPC is used as the antenna carrier, the coaxial line is used as the transmission line, the antenna design is optimized, the wave-absorbing material is pasted, and the proper impedance component is matched, so that the long-distance and high-reliability transceiving of the RFID technology is realized.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a long-distance identification system for a planing tool head. Background Art

[0002] In orthopedic arthroscopic surgery, an arthroscopic planer is used to remove or trim damaged articular cartilage tissue. Existing orthopedic arthroscopic planers mainly consist of a drive system, a control system, a handheld system and other auxiliary systems. Among them, the control system requires a separate control chassis to receive operating instructions and adjust the speed and power of the drive system to achieve the specific planing action of the handheld system. Most of the existing radio frequency identification technologies (RFID) use short-range communication methods to achieve information exchange between tags and readers through standard antenna design and transmission line configuration. They are usually limited by transmission distance and signal interference; in long-distance applications, radio frequency identification technology (RFID) faces problems such as fast signal attenuation, susceptibility to environmental interference, and low reading rate. What's worse, communication cannot be established. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a long-distance identification system for a shaver head, so as to overcome the technical problem that the shaver head in the prior art is difficult to identify at a long distance and cannot meet the surgical requirements.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] According to a first aspect of the present invention, a planer head remote identification system is provided, the system comprising an RFID chip, an RFID module, a coaxial cable and an FPC antenna substrate; the coaxial cable comprises a connector, a coaxial line and a shielded line;

[0006] The RFID module is connected to the control module through the I / O interface and is connected to the FPC antenna substrate through the coaxial cable;

[0007] The FPC antenna substrate is configured to be cylindrical and adapted to the shape of the planer handle, and is installed inside the planer handle frame;

[0008] The RFID chip is arranged on the blade tag, and is used to be activated when the blade tag is inserted into the planer handle, and is matched with the RFID module, and the tag content is sent to the RFID module;

[0009] The RFID module is used to send the tag content to the control module; the control module is used to receive the tag content and identify and verify the tag content.

[0010] Optionally, the control module is used to verify the validity of the label content; wherein the label content includes the manufacturer and / or model;

[0011] When the tag content is verified, the main control software is activated; when the tag content is not verified, an error message is prompted.

[0012] Optionally, the tag content also includes usage count information;

[0013] The control module is also used to update the usage count information of the blade label when the label content verification passes.

[0014] Optionally, the connector I / O interface is connected to the coaxial line and the shielded line respectively;

[0015] The RFID module is used to output a carrier signal to an output terminal on the PCB main board;

[0016] The output terminal is used to transmit the carrier signal to the connector through the coaxial line;

[0017] The FPC antenna substrate is connected to the shielding line and is used to transmit the carrier signal.

[0018] Optionally, the tag coil in the tool head tag is used to obtain energy based on the carrier signal emitted by the FPC antenna substrate when inserted into the planer handle;

[0019] The RFID chip is used to start when the tag coil obtains energy, match with the RFID module, and send the tag content to the RFID module.

[0020] Optionally, the RFID signal lines in the PCB mainboard layout adopt differential wiring to reduce the bit error rate.

[0021] Optionally, the frequency of the carrier signal is 13.56 MHz.

[0022] Optionally, the FPC antenna substrate includes impedance matching components;

[0023] The impedance matching component is used to perform impedance matching and adjustment on the carrier transmission line so that the carrier signal attenuation is less than 5V.

[0024] Optionally, the system further comprises an absorbing material;

[0025] The absorbing material is pasted on the outside of the FPC antenna substrate to reduce signal reflection interference.

[0026] Optionally, the coaxial cable is a 50-ohm coaxial cable.

[0027] The above one or more technical solutions provided by the present invention may have the following advantages or at least achieve the following technical effects:

[0028] The present invention proposes a long-distance identification system for a planer head, comprising an RFID chip, an RFID module, a coaxial cable and an FPC antenna substrate; the coaxial cable comprises a connector, a coaxial line and a shielded line; the RFID module is connected to the control module through an I / O interface, and is connected to the FPC antenna substrate through the coaxial cable; the FPC antenna substrate is set to a cylindrical shape adapted to the shape of the planer handle, and is installed inside the planer handle skeleton; the RFID chip is set on the tool head label, and is used to start when the tool head label is inserted into the planer handle, and is matched with the RFID module to send the label content to the RFID module; the RFID module is used to send the label content to the control module; the control module is used to receive the label content and identify and verify the label content. Through the present invention, FPC is used as an antenna carrier, the coaxial line is used as a transmission line, the antenna design is optimized, the absorbing material is pasted, and the appropriate impedance components are matched, so as to realize the long-distance and high-reliability transmission and reception of RFID technology; it can meet the requirements of placing the label and antenna at the end of the planer operating handle in clinical scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the structure of a long-distance identification system for a planing tool head according to an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the structure of a coaxial cable connection circuit proposed in one embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the structure of a coaxial cable proposed in one embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the configuration of the absorbing material and the FPC antenna substrate proposed in one embodiment of the present invention;

[0034] Figure 5 A schematic diagram of the structure of an impedance matching circuit proposed in one embodiment of the present invention;

[0035] Figure 6 A schematic diagram of the process of long-distance identification of a planing tool head according to an embodiment of the present invention.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that in the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a device or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a device or system. In the absence of further restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the device or system including the element. In the present invention, unless otherwise clearly specified and defined, the terms "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] like Figure 1 As shown, it is a structural schematic diagram of a planer speed control system proposed by the present invention, and the system may include: an RFID chip, an RFID module, a coaxial cable and an FPC antenna substrate.

[0040] The RFID module is connected to the control module. Specifically, the RFID module establishes communication with the planer main control chip through the I / O; the FPC antenna substrate is set to a cylindrical shape that adapts to the shape of the planer handle and is installed inside the planer handle frame; the RFID chip is set on the blade tag, which is used to start when the blade tag is inserted into the planer handle, and match with the RFID module to send the tag content to the RFID module; the RFID module is used to send the tag content to the control module; the control module is used to receive the tag content and identify and verify the tag content.

[0041] Furthermore, if Figure 2 As shown, the RFID module is connected to the FPC antenna substrate via a coaxial cable. Figure 3 The figure shows the schematic diagram of the coaxial cable structure. As the name implies, coaxial cables are multiple cables that are coaxial and layered. The low loss and high stability of coaxial cables are used to ensure the quality and strength of signals based on radio frequency identification technology (RFID) during long-distance differential transmission. Multi-group, multi-shielded coaxial cables ensure that the reverse electromotive force generated when the motor starts and stops will not interfere with the coaxial cable when superimposed on the power and signal lines.

[0042] The 50 ohm coaxial cable in the embodiment of the present invention includes a connector, a coaxial line and a shielded line. The connector I / O interface is connected to the coaxial line and the shielded line respectively. Thus, the RFID module can output a 13.56M carrier signal to the output terminal on the PCB motherboard where it is located; the output terminal is used to transmit the carrier signal to the connector through the coaxial line; the FPC antenna substrate is connected to the shielded line for transmitting the carrier signal.

[0043] Furthermore, the planer speed control system provided by the embodiment of the present invention may also include an absorbing material, such as Figure 4 As shown, the FPC antenna substrate is set to a cylindrical shape that adapts to the shape of the planer handle and is installed inside the planer handle frame. The absorbing material is pasted on the outside of the FPC antenna substrate to reduce signal reflection interference and improve signal purity and recognition rate. In practical applications, the absorbing material can generally be pasted on the outside of the planer handle frame ( Figure 4 The metal-colored part in the middle is an integrated planer handle frame), and a handheld system housing is provided on the outermost side to protect the internal components.

[0044] Furthermore, in the layout of the PCB motherboard of the embodiment of the present invention, the RFID signal line adopts differential wiring to reduce the bit error rate. The FPC antenna substrate may also include impedance matching components; the impedance matching components are used to perform impedance matching and adjustment on the carrier transmission line so that the carrier signal attenuation is less than 5V. Specifically, Figure 5As shown, it is a schematic diagram of an impedance matching circuit. The embodiment of the present invention can adjust the impedance matching components including R1, C1, C2 and C3 to perform impedance matching and adjustment on the transmission line, so that the attenuation of the 13.56M carrier signal is less than 5V and the waveform is not distorted, thereby ensuring the stability and consistency of the signal during transmission.

[0045] The working principle of the planing cutter head long-distance identification system provided by the embodiment of the present invention is explained below. Figure 6 As shown: The RFID chip is set on the blade tag. When the planing blade tag is inserted into the planer handle, it obtains energy based on the carrier signal emitted by the FPC antenna substrate. The RFID chip is activated after the blade tag obtains energy, and matches with the RFID module, and sends the tag content to the RFID module. The RFID module is connected to the main control chip of the control module through the I / O interface and sends the tag content to the control module. The control module is used to verify the validity of the tag content.

[0046] The tag content may include the manufacturer and model. After the main control chip receives the manufacturer and model in the tag content and verifies that the content is valid, the main control software is activated; if the content is invalid, an error message is prompted. In addition, the tag content of the embodiment of the present invention can also be set to include the number of times the planing tool head is used. The control module is also used to update the number of times the tool head tag is used when the tag content is verified, that is, the number of times the tag is used is reduced by one, and the tag number information is rewritten.

[0047] The following is an example of a calling program using radio frequency identification technology (RFID) according to an embodiment of the present invention:

[0048] (1) Establish communication with the RFID module:

[0049] UART serial port---->RFID module sends command:

[0050] Command: RFID_UID_CMD[4] = {0x04, 0x01, 0xD0, 0x2A},

[0051] Query the ID card ID value for identity recognition.

[0052] UART serial port<----RFID module sends command: 0x01 for establishing connection, 0x00 for communication access failure;

[0053] (2) Query RFID data block information:

[0054] UART serial port---->RFID module sends command:

[0055] Read_CMD

[14] ={0x0E,0x01,0xD3,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x17,0x02,0x00};UART serial port<----RFID module receives command:

[0056] RFID_Recieve={0x00,0x01,0xFE,0x00};

[0057] (3) Communication frequency control code (part):

[0058] RCC->APB1ENR|=1<<0;

[0059] TIM2->arr = arr;

[0060] tim2->psc=psc;

[0061] TIM2->DIER[=1<<0;

[0062] TIM2->CR1|=0x01;

[0063] MY_NVIC_Init(3,3,TIM2_IRQn,2);

[0064] A long-distance identification system for a planer head proposed in an embodiment of the present invention includes an RFID chip, an RFID module, a coaxial cable and an FPC antenna substrate; the RFID module is connected to the control module through an I / O interface, and is connected to the FPC antenna substrate through a coaxial cable; the coaxial cable includes a connector, a coaxial line and a shielded line; the FPC antenna substrate is set to a cylindrical shape adapted to the shape of the planer handle, and is installed inside the planer handle skeleton; the RFID chip is set on the tool head tag, which is used to start when the tool head tag is inserted into the planer handle, and matches with the RFID module to send the tag content to the RFID module; the RFID module is used to send the tag content to the control module; the control module is used to receive the tag content and identify and verify the tag content. Through the present invention, when the radio frequency identification technology (RFID) is applied to orthopedic planing equipment, the long-distance, high-precision, high-efficiency and reliable identification of the planer head is achieved in complex clinical scenarios, which meets its application in planer head identification and encryption, and the requirements that the tag and antenna are placed at the end of the planer operating handle. The beneficial effects of the present invention include at least the following aspects:

[0065] 1. The RFID transmission distance reaches 3 meters, meeting the application requirements of the planer handle;

[0066] 2. Coaxial cable enhances the signal's anti-interference ability and improves the recognition rate and stability in complex environments;

[0067] 3. FPC is used as the antenna substrate, which overcomes the problem that the PCB antenna cannot be installed on the inner surface of the planer handle.

[0068] 4. Provides flexible impedance matching adjustment method, suitable for different RFID;

[0069] 5. After using the absorbing material, the metal shell of the planer can effectively prevent the metal shell from absorbing the RFID carrier signal, and the EMC test meets the standard requirements;

[0070] 6. Limit reuse to ensure patient safety; encrypt information to ensure safe use of equipment.

[0071] It should be noted that the serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

[0072] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A planing tool head long-distance identification system, characterized in that: The system includes an RFID chip, an RFID module, a coaxial cable and an FPC antenna substrate; the coaxial cable includes a connector, a coaxial line and a shielded line; The RFID module is connected to the control module through the I / O interface and is connected to the FPC antenna substrate through the coaxial cable; The FPC antenna substrate is configured to be cylindrical and adapted to the shape of the planer handle, and is installed inside the planer handle frame; The RFID chip is arranged on the blade tag, and is used to be activated when the blade tag is inserted into the planer handle, and is matched with the RFID module, and the tag content is sent to the RFID module; The RFID module is used to send the tag content to the control module; the control module is used to receive the tag content and identify and verify the tag content.

2. The system according to claim 1, characterized in that The control module is used to verify the validity of the label content; wherein the label content includes the manufacturer and / or model; When the tag content is verified, the main control software is activated; when the tag content is not verified, an error message is prompted.

3. The system according to claim 1, characterized in that The label content also includes usage frequency information; The control module is also used to update the usage count information of the blade label when the label content verification passes.

4. The system according to claim 1, characterized in that The connector I / O interface is connected to the coaxial line and the shielded line respectively; The RFID module is used to output a carrier signal to an output terminal on the PCB main board; The output terminal is used to transmit the carrier signal to the connector through the coaxial line; The FPC antenna substrate is connected to the shielding line and is used to transmit the carrier signal.

5. The system according to claim 1, characterized in that The tag coil in the tool head tag is used to obtain energy based on the carrier signal emitted by the FPC antenna substrate when inserted into the planer handle; The RFID chip is used to start when the tag coil obtains energy, match with the RFID module, and send the tag content to the RFID module.

6. The system according to claim 4, characterized in that The RFID signal lines in the PCB mainboard layout adopt differential wiring to reduce the bit error rate.

7. The system according to claim 4, characterized in that The frequency of the carrier signal is 13.56 MHz.

8. The system according to claim 7, characterized in that The FPC antenna substrate includes impedance matching components; The impedance matching component is used to perform impedance matching and adjustment on the carrier transmission line so that the carrier signal attenuation is less than 5V.

9. The system according to claim 1, characterized in that The system also includes an absorbing material; The absorbing material is pasted on the outside of the FPC antenna substrate to reduce signal reflection interference.

10. The system according to any one of claims 1 to 9, characterized in that: The coaxial cable is a 50-ohm coaxial cable.

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