An Internet of Things electronic tag with multiple charging modes
By designing flexible IoT electronic tags, the problems of traditional tag installation difficulties and cumbersome battery replacement are solved, good contact with the curved shell of the equipment and multiple charging methods are achieved, antenna interference is reduced, and label reliability and communication efficiency are improved.
Patent Information
- Application Number
- CN201910369627.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-05-05
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2039-05-05
AI Technical Summary
Traditional IoT electronic tags have difficulties in installation and power supply. Inadequate elasticity leads to installation difficulties. They need to be replaced manually after the battery is exhausted, which increases structural complexity and maintenance costs. At the same time, antenna interference during wireless charging leads to reduced efficiency.
Design a flexible IoT electronic tag with multi-charging mode, including a flexible housing, motherboard, multi-layer flexible circuit board, rechargeable battery, temperature sensor and thin-film solar charging panel, with antennas arranged on the flexible circuit board to reduce interference, adopt The nested arrangement of Qi antennas, RFID antennas and narrowband IoT antennas combines solar charging to realize multiple communication methods.
It achieves good contact between the electronic tag and the curved shell of the equipment, extends battery life time, reduces antenna interference, simplifies structure, reduces installation and maintenance costs, and improves the reliability and communication efficiency of the tag.
Smart Images
Figure CN111898721B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of wireless communications, and more specifically, to an Internet of Things electronic tag comprising functions such as RFID, narrowband Internet of Things communication, asset status monitoring, and wireless charging. Background Art
[0002] Traditional IoT technology uses a unique EPC (electronic article code) code for items, writes the code into an electronic tag, identifies the electronic tag on the item through an electronic tag reader and writer, and collects the item information into the information system. At the same time, in response to the monitoring needs of various types of equipment, it is necessary to perceive the equipment environment data and equipment operating status in real time. However, various types of monitoring devices are currently isolated, making it difficult to achieve real-time identification and evaluation of equipment status on site. Each sensor has a separate power supply unit and communication unit, which greatly occupies physical space, increases installation and maintenance costs, and affects appearance. The organic combination of traditional electronic tags and equipment online monitoring functions can realize real-time online status of tags and corresponding assets, which can effectively solve the above shortcomings.
[0003] Traditional electronic tags have a certain hardness and insufficient elasticity, while the equipment that needs to be monitored usually has a large area of curved shell (such as insulators, capacitors, etc.). When the electronic tag needs to be installed on the curved shell of the equipment, the traditional electronic tag lacks elasticity, which can easily lead to installation difficulties, and components such as the temperature sensor on the tag cannot fully contact the equipment shell.
[0004] The essence of the IoT electronic tag is a battery-powered embedded system. Its power supply duration is a problem that must be faced. The battery life must be extended as much as possible to improve the reliability of the IoT electronic tag. Generally speaking, due to the size of the tag itself, after the battery is exhausted, the tag needs to be removed and the battery needs to be replaced manually. The operation is cumbersome and increases the complexity of the tag structure design, reducing the reliability of the overall structure. In order to overcome the above problems, electronic tags that can be wirelessly charged have emerged. The battery in the electronic tag is charged by wireless charging. However, this easily leads to multiple antennas in the electronic tag at the same time. Various antennas are prone to mutual interference, resulting in reduced charging or communication efficiency. Summary of the invention
[0005] The object of the present invention is to provide an Internet of Things electronic tag with multiple charging modes, which is flexible as a whole and can fully contact with the curved shell of the device, and can limit the mutual interference between several antennas in the electronic tag through the overall design.
[0006] An Internet of Things electronic tag with multiple charging modes comprises a flexible shell, a main board, a first flexible circuit board, a second flexible circuit board, a rechargeable battery, a temperature sensor, and a thin-film solar charging panel, wherein the flexible shell is provided with a thin-film solar charging panel, the main board is provided with an embedded processor MCU, the first flexible circuit board is provided with a Qi antenna and an RFID antenna, the second flexible circuit board is provided with a narrowband Internet of Things antenna, the first flexible circuit board is provided above the main board and parallel to the main board, the second flexible circuit board and the rechargeable battery are provided below the main board, the second flexible circuit board is provided vertically to the main board, the Qi antenna is provided at the lower side of the first flexible circuit board, the RFID antenna is provided at the upper side of the first flexible circuit board, the Qi antenna and the RFID antenna are nested with each other in a vertical direction without facing each other, a first remaining circuit component is provided at a portion in the middle of the first flexible circuit board where the Qi antenna and the RFID antenna are not provided, and a second remaining circuit component is provided at a portion in the middle of the second flexible circuit board where the narrowband Internet of Things antenna is not provided.
[0007] According to a further technical solution, the first flexible circuit board has a layered structure, which includes, from bottom to top, a first protective layer, a ferrite layer, a first flexible circuit board body layer, an isolation layer, and a second protective layer, and each layer is fixed together by gluing or lamination, wherein the Qi antenna is embedded in the upper part of the ferrite layer, and the RFID antenna is embedded in the upper part of the isolation layer.
[0008] According to a further technical solution, the second flexible circuit board has a layered structure, which includes, from bottom to top, a second flexible circuit board main body layer, a protective layer, and a narrowband Internet of Things antenna embedded in the upper part of the main body layer.
[0009] According to a further technical solution, the Qi antenna, RFID antenna and narrowband Internet of Things antenna are spiral ring or square.
[0010] According to a further technical solution, a flexible display device is provided on the flexible housing to display the remaining power of the rechargeable battery.
[0011] According to a further technical solution, the first and second remaining circuit components are circuit parts of a charging circuit, a memory or a temperature sensor of a thin-film solar charging panel.
[0012] As a further technical solution, the temperature data is sent to the storage area of the RFID chip via the MCU, so that the inspection personnel can read the temperature data together with the device information through the RFID reader.
[0013] A further technical solution is to send data on demand via NB-IoT wireless communication during inspection intervals.
[0014] The beneficial effects of the present invention are:
[0015] The IoT electronic tag with multiple charging modes includes a Qi antenna, an RFID antenna, a narrowband IoT antenna, and a thin-film solar charging panel. While satisfying the functions of wireless charging and solar charging, it can realize multiple communication modes. The shell of the electronic tag and the thin-film solar charging panel are flexible, and several antennas are arranged on a flexible circuit board. The remaining circuit components can be set in the empty space of the flexible circuit board to reduce the volume of the rigid main board, thereby realizing the overall flexibility of the electronic tag, which is convenient for installation on the curved surface shell of the device. Moreover, the Qi antenna and the RFID antenna are nested with each other, and the Qi antenna, the RFID antenna and the narrowband IoT antenna are arranged on different sides of the main board, which greatly limits the interference between the several antennas. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of an Internet of Things electronic tag with multiple charging modes;
[0017] Figure 2 A schematic diagram of the antenna arrangement of the first flexible circuit board;
[0018] Figure 3 is a schematic diagram of a layered structure of a first flexible circuit board;
[0019] Figure 4 is a schematic diagram of the antenna arrangement of the second flexible circuit board;
[0020] Figure 5 is a schematic diagram of a layered structure of a second flexible circuit board;
[0021] Among them, 1-flexible shell, 2-main board, 3-first flexible circuit board, 4-second flexible circuit board, 5-rechargeable battery, 6-temperature sensor, 7-thin-film solar charging panel, 30-first remaining circuit components, 31-Qi antenna, 32-RFID antenna, 311-first Qi connecting line, 312-second Qi connecting line, 321-first RFID connecting line, 322-second RFID connecting line, 33-first protective layer, 34-ferrite layer, 35-flexible circuit board body layer, 36-isolation layer, 37-second protective layer, 38-connecting part, 40-second remaining circuit components, 41-narrowband Internet of Things (NB-IoT) antenna, 42-second flexible circuit board body layer, 43-protective layer, 44-connecting part of the second flexible circuit board 4, 411-first NB-IoT connecting line, 412-second NB-IoT connecting line. DETAILED DESCRIPTION
[0022] In order to better understand the present invention, the content of the present invention is further described below in conjunction with the accompanying drawings and examples.
[0023] The Internet of Things electronic tag with multiple charging modes includes a flexible shell 1, a main board 2, a first flexible circuit board 3, a second flexible circuit board 4, a rechargeable battery 5, a temperature sensor 6, and a thin-film solar charging panel 7. The flexible shell 1 is provided with a thin-film solar charging panel 7, which is flexible. A flexible display device can also be provided on the flexible shell 1 to display the remaining power of the rechargeable battery. An embedded processor MCU is mainly provided on the main board 2. The thin-film solar charging panel 7 is used to charge the rechargeable battery 5 using solar energy. A Qi antenna 31 (wireless charging antenna) and an RFID antenna 32 are arranged on the first flexible circuit board 3. A narrowband Internet of Things (NB-I oT) antenna 41, the first flexible circuit board 3 is arranged above the main board 2 and is arranged parallel to the main board 2, the second flexible circuit board 4 and the rechargeable battery 5 are arranged below the main board 2, and the second flexible circuit board 4 is arranged vertically to the main board 2. This arrangement makes the Qi antenna 31 (wireless charging antenna) and the RFID antenna 32 on the first flexible circuit board have no directly facing parts with the narrowband Internet of Things (NB-IoT) antenna 41 on the second flexible circuit board, and they are isolated by the main board 2, which can reduce the interference of the Qi coil and the RFID antenna 32 to the NB-IoT antenna, maximize the NB-IoT signal, reduce the power consumption of wireless communication, and ensure the endurance of the Internet of Things electronic tag. The Qi antenna 31 is arranged on the lower side of the first flexible circuit board 3, The RFID antenna 32 is arranged on the upper side of the first flexible circuit board 3, the Qi antenna 31 (wireless charging antenna) and the RFID antenna 32 are spiral rings or squares, and the Qi antenna 31 (wireless charging antenna) and the RFID antenna 32 are nested with each other in the vertical direction, that is, the Qi antenna 31 (wireless charging antenna) and the RFID antenna 32 have no directly facing parts in the vertical direction, and the part in the middle of the first flexible circuit board 3 where the Qi antenna 31 (wireless charging antenna) and the RFID antenna 32 are not arranged is provided with a first remaining circuit device 30 as needed, and the first remaining circuit device 30 can be a charging circuit of the thin-film solar charging panel 7, a circuit part of a memory or a temperature sensor, or other circuits as needed. The design can minimize the area directly facing the Qi antenna 31 (wireless charging antenna) and the RFID antenna 32, thereby reducing the coupling interference between the Qi antenna 31 (wireless charging antenna) and the RFID antenna 32. At the same time, the area of the first flexible circuit board 3 is used with the highest efficiency, so that other circuit components can be placed in the middle of the first flexible circuit board 3, thereby reducing the circuit components on the main board to a minimum, thereby minimizing the volume of the main board. Because in the entire Internet of Things electronic tag, only the main board and the battery are rigid, and the battery volume is fixed, reducing the volume of the main board to a minimum can minimize the hardness of the entire Internet of Things tag and increase its flexibility, so that it can better adapt to devices with curved shell surfaces.
[0024] The first flexible circuit board 3 is a layered structure. Figure 3 , from bottom to top are the first protective layer 33, the ferrite layer 34, the flexible circuit board body layer 35, the isolation layer 36, and the second protective layer 37. The layers are fixed together by gluing or laminating. Among them, the Qi antenna 31 is embedded in the upper part of the ferrite layer 34, and the RFID antenna 32 is embedded in the upper part of the isolation layer 36. The ferrite layer 34 is a mixture of ferrite powder and resin, which can increase the reflected energy of the electromagnetic field and increase the efficiency of wireless charging. The isolation layer 36 is used to further isolate the interference between the Qi antenna 31 (wireless charging antenna) and the RFID antenna 32. The first Qi connecting line 31 extends from both ends of the Qi antenna 31. 1 and the second Qi connection line 312, the first Qi connection line 311 and the second Qi connection line 312 are not electrically in contact with the rest of the Qi antenna, the first RFID connection line 321 and the second RFID connection line 322 are respectively extended from both ends of the RFID antenna 32, the first RFID connection line 321 and the second RFID connection line 322 are not electrically in contact with the rest of the RFID antenna, the first Qi connection line 311, the second Qi connection line 312 and the first RFID connection line 321, the second RFID connection line 322 extend to the connection part 38 of the first flexible circuit board 3, and the connection part 38 is used to be electrically connected to the mainboard 2.
[0025] The second flexible circuit board 4 is a layered structure. Figure 5, from bottom to top, there are the second flexible circuit board body layer 42, the protective layer 43, the narrowband Internet of Things (NB-IoT) antenna 41 embedded in the upper part of the body layer 42, the narrowband Internet of Things (NB-IoT) antenna 41 is a spiral ring or square, arranged on the edges of the second flexible circuit board 4, and the second remaining circuit device 40 is provided in the middle of the second flexible circuit board 4 where the narrowband Internet of Things (NB-IoT) antenna 41 is not arranged as needed. The second remaining circuit device 40 can be a charging circuit of a thin-film solar charging panel 7, a circuit part of a memory or a temperature sensor, or other circuit devices as needed. This design can efficiently utilize the area of the second flexible circuit board 4, and can reduce the circuit devices on the main board to a minimum, thereby minimizing the volume of the main board. Because in the entire Internet of Things electronic tag, only the main board and the battery are rigid, and the battery volume is fixed, reducing the volume of the main board to a minimum can minimize the hardness of the entire Internet of Things tag and increase its flexibility, so that it can better adapt to devices with curved shell surfaces. A first NB-IoT connection line 411 and a second NB-IoT connection line 412 extend from both ends of the narrowband Internet of Things (NB-IoT) antenna 41, respectively. The first NB-IoT connection line 411 and the second NB-IoT connection line 412 are not electrically in contact with the rest of the antenna 41. The first NB-IoT connection line 411 and the second NB-IoT connection line 412 extend to the connection part 44 of the second flexible circuit board 4, and the connection part 44 is used to be electrically connected to the mainboard 2.
[0026] When the present invention is used, the Internet of Things electronic tag is reliably pasted and installed on the surface of the power equipment / facility, and the temperature sensor on the tag is ensured to be in full contact with the equipment. The Internet of Things electronic tag is relied on to realize the real-time control of the equipment asset coding and the equipment status, and the battery is charged through the built-in wireless charging coil of the tag to avoid manual replacement of the battery. MCU is the control core of the Internet of Things electronic tag, which realizes the coordinated control of data flow and each module. The temperature sensor measures the temperature of the equipment and sends the temperature data to the storage area of the RFID chip through the MCU, so that it can be used by the patrol personnel to read the temperature sensing data together when reading the equipment information through the RFID reader. At the same time, through the communication module inside the Internet of Things electronic tag, the temperature data can be sent on demand during the patrol interval through the NB-IoT wireless communication. The tag has a built-in rechargeable battery to realize the power supply of the tag system. At the same time, the built-in charging coil is connected to the battery, and the low power monitoring alarm can be pushed when the power is too low. Based on the Qi standard, the Internet of Things electronic tag is wirelessly charged during the scanning process of the patrol personnel using the RFID reader. In the case of sunlight, the thin-film solar charging panel uses solar energy to charge the battery.
[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the invention to be protected, and the protection scope of the present invention is defined by the attached claims and their equivalents.
Claims
1. An Internet of Things electronic tag with multiple charging modes, characterized in that: It includes a flexible shell, a main board, a first flexible circuit board, a second flexible circuit board, a rechargeable battery, a temperature sensor, and a thin-film solar charging panel. The flexible shell is provided with a thin-film solar charging panel, the main board is provided with an embedded processor MCU, the first flexible circuit board is provided with a Qi antenna and an RFID antenna, the second flexible circuit board is provided with a narrowband Internet of Things antenna, the first flexible circuit board is provided above the main board and is arranged in parallel with the main board, the second flexible circuit board and the rechargeable battery are provided below the main board, the second flexible circuit board is provided vertically with the main board, the Qi antenna is provided at the lower side of the first flexible circuit board, the RFID antenna is provided at the upper side of the first flexible circuit board, the Qi antenna and the RFID antenna are provided mutually nested in a vertical direction without facing each other, the first remaining circuit components are provided at the middle part of the first flexible circuit board where the Qi antenna and the RFID antenna are not provided, and the second remaining circuit components are provided at the middle part of the second flexible circuit board where the narrowband Internet of Things antenna is not provided; The first flexible circuit board is a layered structure, which includes a first protective layer, a ferrite layer, a first flexible circuit board body layer, an isolation layer, and a second protective layer from bottom to top, and each layer is fixed together by gluing or laminating, wherein the Qi antenna is embedded in the upper part of the ferrite layer, and the RFID antenna is embedded in the upper part of the isolation layer; The ferrite layer is a mixture of ferrite powder and resin, which can increase the reflected energy of the electromagnetic field and increase the efficiency of wireless charging. The isolation layer is used to further isolate the interference between the Qi antenna and the RFID antenna. The first Qi connecting line and the second Qi connecting line are respectively extended from both ends of the Qi antenna, and the first Qi connecting line and the second Qi connecting line are not electrically contacted with the rest of the Qi antenna. The first RFID connecting line and the second RFID connecting line are respectively extended from both ends of the RFID antenna, and the first Qi connecting line and the second RFID connecting line are not electrically contacted with the rest of the RFID antenna. The first Qi connecting line, the second Qi connecting line and the first RFID connecting line and the second RFID connecting line extend to the connecting part of the first flexible circuit board, and the connecting part is used to be electrically connected to the mainboard.
2. The Internet of Things electronic tag according to claim 1, characterized in that: The second flexible circuit board is a layered structure, which includes, from bottom to top, the second flexible circuit board main body layer, the protective layer, and the narrowband Internet of Things antenna embedded in the upper part of the main body layer.
3. The Internet of Things electronic tag according to any one of claims 1 to 2, characterized in that: Qi antennas, RFID antennas, and NB-IoT antennas are spiral-shaped, ring-shaped, or square-shaped.
4. The Internet of Things electronic tag according to any one of claim 3, characterized in that: A flexible display device is arranged on the flexible housing to display the remaining power of the rechargeable battery.
5. The Internet of Things electronic tag according to any one of claims 1 to 2, characterized in that: A flexible display device is arranged on the flexible housing to display the remaining power of the rechargeable battery.
6. The Internet of Things electronic tag according to any one of claims 1 to 2, characterized in that: The first and second remaining circuit components are circuit parts of a charging circuit, a memory or a temperature sensor of a thin-film solar charging panel.
7. The Internet of Things electronic tag according to any one of claims 1 to 2, characterized in that: The temperature data is sent to the storage area of the RFID chip via the MCU, and can be read out by inspection personnel through the RFID reader when reading the device information.
8. The Internet of Things electronic tag according to any one of claims 1 to 2, characterized in that: During the inspection interval, data is sent on demand via NB-IoT wireless communication.