Anti-lost patch

Abstract

The utility model provides a kind of anti-lost patch, shell has adhesive layer;Anti-lost patch circuit structure has control module, positioning module, communication module, positioning module signal output end, communication module signal input end is respectively connected with control module by first signal connection line, second signal connection line and electricity;Positioning module, communication module, control module are all set in circuit board;Circuit board is located in shell inner cavity;Signal isolation area between positioning module and communication module is formed on circuit board;Signal isolation area and control module are in signal isolation area length direction towards each other;Signal isolation area length direction, the distance between signal isolation area and control module is less than the distance between positioning module and control module, and less than the distance between communication module and control module;Signal isolation area width direction, first signal connection line is arranged between positioning module and signal isolation area, and second signal connection line is arranged between communication module and signal isolation area.

Description

Technical Field

[0001] This utility model relates to an anti-lost patch, particularly an anti-lost device for people (especially the elderly, children, patients and other people who are prone to getting lost). Background Technology

[0002] In existing technologies, anti-wandering devices for people (especially the elderly, children, patients, and other vulnerable groups) mainly include integrated wearable devices, special patches, and wristbands, as detailed below: Patent application CN204742676U, entitled "An Improved Clothing for Preventing Children from Getting Lost," integrates components such as a GPS locator, processor, and speaker into the garment itself (including an inner and outer layer). It is powered by a rechargeable battery via a solar panel and wired charging, and features positioning, luminous display, and voice announcement functions. However, it relies on the garment as a carrier, resulting in a large size and poor wearing flexibility, making it only suitable for specific clothing items. The charging method is limited by solar energy (significantly affected by weather) and a wired interface (requiring the hem to be detached), leading to insufficient battery life stability. Furthermore, the integrated functional modules make it unsuitable for scenarios where the garment is not worn, limiting its applicability.

[0003] In the patent application CN206672518U, entitled "A Patches for Preventing Patients from Getting Lost in Clinical Nursing," the patches are fixed to the inside of clothing by adhesive bonding and sewing, and include a GPS positioning block and printed functional information pieces (QR codes, contact numbers, etc.). However, the charging method is not specified, relying only on a built-in power source, resulting in limited battery life; the functional information pieces are printed, which is prone to wear and tear over long-term use, leading to blurred information; the accuracy of the positioning module is unclear, and the fixing method relies on sewing into clothing, making it unsuitable for scenarios without clothing or where the carrier needs to be frequently changed. Utility Model Content

[0004] The problem this invention aims to solve is that existing anti-lost devices rely on clothing or can only be worn with wristbands, and provides an anti-lost patch.

[0005] To solve the above technical problems, the technical solution adopted by this utility model is: an anti-lost patch, wherein the shell structure of the anti-lost patch has an adhesive layer (6). The circuit structure of the anti-lost patch includes a control module (19), a positioning module (10) for detecting the location of the target person, and a communication module (11) for sending the location of the target person to the receiving terminal. The signal output terminal of the positioning module (10) is electrically connected to the control module (19) through the first signal connection line (241); The signal input terminal of the communication module (11) is electrically connected to the control module (19) via the second signal connection line (242); The positioning module (10), communication module (11), and control module (19) are all mounted on the circuit board (9); the circuit board (9) is located in the inner cavity formed by the housing structure; A signal isolation area (23) is formed on the circuit board (9). The signal isolation area (23) is a region where no signal connection lines of the circuit structure are arranged and no ground wires are arranged. The positioning module (10) and the communication module (11) are arranged facing each other in the width direction (LA2) of the signal isolation area. The signal isolation area (23) is located between the positioning module (10) and the communication module (11). The signal isolation area (23) and the control module (19) are arranged facing each other along the length direction (LA1) of the signal isolation area.

[0006] In this invention, the anti-lost patch can be attached to the skin or clothing of the target person through the adhesive layer, making the patch more applicable. By incorporating a positioning module and a communication module, the current location of the target person can be detected, and the location can be transmitted to a receiving terminal via the communication module, enabling monitoring of the target person's location. The circuit board is effectively protected by placing it within the internal cavity of the housing structure. The applicant discovered that the communication module's signal transmission and reception can significantly affect other surrounding signals. Since both the positioning module and the communication module are electrically connected to the control module, they are generally placed relatively close to each other to reduce space requirements. To avoid interference from the communication module's signal transmission and reception on the positioning module's positioning signal (e.g., causing signal loss), this invention establishes a signal isolation area between the positioning module and the communication module, acting as an isolation strip. This signal isolation area does not contain the signal connection lines of the aforementioned circuit structure, nor does it contain a ground wire, effectively reducing signal interference between the positioning module and the communication module.

[0007] In the above technical solution, the signal isolation area extends beyond the two side boundaries of the positioning module and also extends beyond the two side boundaries of the communication module along its length.

[0008] The above settings ensure good signal isolation between the positioning module and the communication module within the signal isolation zone.

[0009] In the above technical solution, a first ground wire (231) and a second ground wire (232) are respectively provided on both sides of the first signal connection line (241); a third ground wire (233) and a fourth ground wire (234) are respectively provided on both sides of the second signal connection line (242); in the width direction (LA2) of the signal isolation area, the first signal connection line (241), the first ground wire (231), and the second ground wire (232) are all arranged on the circuit board (9) in the area between the positioning module (10) and the signal isolation area (23), and the second signal connection line... (242), the third ground wire (233), and the fourth ground wire (234) are all arranged on the circuit board (9) in the area between the communication module (11) and the signal isolation area (23). The first ground wire (231) and the second ground wire (232) are respectively located on the side of the first signal connection line (241) closer to the positioning module (10) and the side away from the positioning module (10); the third ground wire (233) and the fourth ground wire (234) are respectively located on the side of the second signal connection line (242) away from the communication module (11) and the side closer to the communication module (11). The first ground wire (231), the second ground wire (232), the third ground wire (233), and the fourth ground wire (234) are electrically connected to each other.

[0010] Through the above technical solution, the ground wires on both sides of the signal line can directly conduct the induced current generated by external interference into the ground terminal; by arranging ground wires on both sides of each signal line, interference between the first and second signal connection lines can be reduced.

[0011] In the above technical solution, the signal isolation area (23) is rectangular, the length of the signal isolation area (23) is in the range of [8mm, 12mm], and the width of the signal isolation area (23) is in the range of [0.8mm, 1.2mm].

[0012] In the above technical solution, the spacing between the first signal connection line (241) and the first ground line (231) and the spacing between the second ground line (232) are both in the range of [2×W1, 3×W1]. The spacing between the second signal connection line (242) and the third ground line (233), and the spacing between the fourth ground line (234) are both within the range of [2×W2, 3×W2]. Wherein, W1 is the width of the first signal connection line (241), and W2 is the width of the second signal connection line (242).

[0013] In the above technical solution, the circuit board (9) is a multilayer circuit board, which includes a ground layer and a signal layer with signal lines arranged thereon; A first array consisting of a plurality of first through holes (251) is formed on the circuit board (9) between the positioning module (10) and the signal isolation area (23); the first array extends at least in the length direction (LA1) of the signal isolation area; A second array consisting of a plurality of second through holes (252) is formed on the circuit board (9) between the communication module (11) and the signal isolation region (23); the second array extends at least in the length direction (LA1) of the signal isolation region; The first through hole (251) and the second through hole (252) both penetrate the circuit board (9) along the height direction of the circuit board (9); the width direction (LA2) and length direction (LA1) of the signal isolation area (23) are both perpendicular to the height direction of the circuit board (9); In the width direction (LA2) of the signal isolation region, the first array is located between the second ground line (232) and the signal isolation region (23), and the second array is located between the third ground line (233) and the signal isolation region (23).

[0014] With the above configuration, noise signals originating from the communication module and traveling towards the positioning module can reach the ground plane of the multilayer circuit board via a second via located between the communication module and the signal isolation area. This ground plane attenuates the noise signal, significantly reducing noise from the communication module in the signal isolation area. For unattenuated noise signals traveling from the signal isolation area towards the positioning module, the noise signal reaches the ground plane of the circuit board via a first via located between the signal isolation area and the positioning module. This ground plane attenuates the noise signal, effectively reducing noise from the communication module and minimizing interference with the positioning module.

[0015] In the above technical solution, the first array includes at least two rows of first through-hole structures arranged sequentially at intervals in the width direction (LA2) of the signal isolation region (23), and each row of first through-hole structures includes a plurality of first through-holes (251) arranged sequentially at intervals in the length direction (LA1) of the signal isolation region, thereby making the first array extend in the length direction (LA1) of the signal isolation region; the first through-holes (251) in the first through-hole structures in different rows are staggered from each other; The second array includes at least two rows of second via structures spaced apart in the width direction (LA2) of the signal isolation region (23). Each row of second via structures includes a plurality of second vias (252) spaced apart in the length direction (LA1) of the signal isolation region, thereby extending the second array in the length direction (LA1) of the signal isolation region. The second vias (252) in the second via structures in different rows are staggered.

[0016] With the above configuration, the first through holes in the first through hole structure located in different rows are staggered, and the second through holes in the second through hole structure located in different rows are staggered, so that the projection of each first through hole and each second through hole in the length direction of the signal isolation area can cover a larger area, thereby making it more likely that noise traveling from the communication module to the positioning module will enter the second through hole or the first through hole and be attenuated.

[0017] In the above technical solution, a noise blocking structure is provided on the outside of each of the top layer, bottom layer, power layer, and signal layer of the multilayer circuit board; and / or A grounding pad is formed on the grounding layer on the outside of each first through hole (251) and on the outside of each second through hole (252).

[0018] The above configuration, including a noise blocking structure, prevents noise signals entering the first and second vias from interfering with signal lines on the signal layer. The grounding pad creates a clear grounding structure near the vias, allowing noise entering the first and second vias to flow towards the ground layer as much as possible, thus reducing interference with the signal layer. The grounding pad is made of conductive material, forming a grounding structure together with the ground layer.

[0019] In the above technical solution, the shell structure includes a first shell (1) and a second shell (4) that are arranged adjacently and fixedly connected to each other; the adhesive layer (6) is provided on the side of the second shell (4) away from the first shell (4); The first housing (1) forms a receiving space (1A), and the second housing (4) forms a cover of the receiving space (1A). The circuit structure of the anti-lost patch is fixedly disposed in the receiving space (1A), and the receiving space (1A) forms the inner cavity of the housing structure.

[0020] The above technical solution facilitates the placement of the circuit structure within the cavity of the housing structure, thereby protecting the circuit structure.

[0021] In the above technical solution, the circuit structure of the anti-lost patch has a power supply module that supplies power to the positioning module (10), the communication module (11), and the control module (19); The power supply module includes a rechargeable battery (13), a wired charging circuit module, and a wireless charging circuit module; The wired charging circuit module and the wireless charging circuit module can be switched to be electrically connected to the input terminal of the rechargeable battery (13).

[0022] The above technical solutions enable the anti-lost patch to be charged via wired or wireless means, making the charging method more flexible.

[0023] In the above technical solution, a first filter circuit is provided between the power supply end of the power supply module and the power receiving end of the positioning module (10); a second filter circuit is provided between the power supply end of the power supply module and the power receiving end of the communication module (11).

[0024] The above settings reduce the impact of noise from the communication module on the power receiving end of the positioning module.

[0025] In the above technical solution, the first filter circuit includes a first ferrite bead (261), a first capacitor structure, and a second capacitor structure; the power supply end of the power supply module, one end of the first ferrite bead (261), and one end of the first capacitor structure are electrically connected to each other; the power receiving end of the positioning module (10), the other end of the first ferrite bead (261), and one end of the second capacitor structure are electrically connected to each other; the other end of the first capacitor structure and the other end of the second capacitor structure are both grounded. The second filter circuit includes a second ferrite bead (262), a third capacitor structure, and a fourth capacitor structure; the power supply end of the power supply module, one end of the second ferrite bead (262), and one end of the third capacitor structure are electrically connected to each other; the power receiving end of the communication module (11), the other end of the second ferrite bead (262), and one end of the fourth capacitor structure are electrically connected to each other; and the other ends of the third capacitor structure and the other ends of the fourth capacitor structure are both grounded.

[0026] In the above technical solution, the wired charging circuit module has a charging interface (2), and the wireless charging circuit module has a wireless charging coil (15). Along the length direction (L1) of the accommodating space (1A); the rechargeable battery (13) is located in the middle of the accommodating space (1A), the wireless charging coil (15) and the charging interface (2) are located on one side of the rechargeable battery (13), and the positioning module (10), the communication module (11) and the control module (19) are located on the other side of the rechargeable battery (13); the control module (19) is arranged adjacent to the positioning module (10) and adjacent to the communication module (11); The length direction of the rechargeable battery (13) is perpendicular to the length direction (L1) of the accommodating space (1A). When the adhesive layer (6) is adhered to the skin or clothing of the target person, the width direction (L2) of the accommodating space (1A) is parallel to the height direction of the target person. The width direction (LA2) of the signal isolation area (23) is perpendicular to the length direction (LA1) of the signal isolation area.

[0027] The above technical solution places the relatively heavy rechargeable battery in the center of the accommodating space, ensuring that when the adhesive layer is attached to the target person's skin or clothing, the length of the rechargeable battery is parallel to the height of the target person. This allows sufficient space on both sides of the rechargeable battery to accommodate other components of the circuit structure. A relatively heavy and large wireless charging coil is placed on one side of the rechargeable battery. Since the charging interface is also part of the power supply module, and considering the larger number of components on the other side of the rechargeable battery, the charging interface is also placed on the side where the wireless charging coil is located. Because the positioning module and communication module are electrically connected to the control module in the circuit structure, these three modules are all placed on the other side of the rechargeable battery, minimizing the weight difference between the two sides and maintaining the overall weight balance of the patch.

[0028] In the above technical solution, the inner wall surface of the shell structure is provided with a buffer pad (14).

[0029] The above technical solution enables the buffer pad to protect the circuit structure when the patch is subjected to vibration or other impacts, reducing the risk of damage to the circuit structure caused by the impact.

[0030] In the above technical solution, the first housing (4) is provided with a charging interface (2) for a wired charging circuit module on its side; and a dust cover (3) is provided on the charging connector (2).

[0031] The above technical solution protects the charging interface by using a dust cover (3).

[0032] In the above technical solution, the receiving terminal is a mobile terminal or a fixed terminal.

[0033] Compared to existing technologies, this invention does not rely on clothing and avoids the need for a wristband, making it more convenient to use. The anti-lost patch of this invention effectively reduces signal interference between the positioning module and the communication module, thereby effectively preventing interference from the communication module's signal to the positioning module's positioning signal. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a three-dimensional structural diagram of the anti-lost patch of Embodiment 1 of this utility model; Figure 2 yes Figure 1 A three-dimensional structural diagram of the first shell in the middle; Figure 3 yes Figure 1 Side view of the connection between the second shell, adhesive layer, and release paper; Figure 4 It is viewed along the thickness direction of the anti-lost patch. Figure 1 A schematic diagram of the circuit structure and buffer pad placement of the anti-lost patch; Figure 5 yes Figure 4 The circuit connection block diagram of each component in the circuit structure of the anti-lost patch; Figure 6 This is a schematic diagram of the arrangement of a signal isolation area and a first signal connection line and a second signal connection line between the positioning module and the communication module in Embodiment 1 of this utility model.

[0036] Figure 7 This is a schematic diagram of the arrangement of a signal isolation area, through holes, and first and second signal connection lines between the positioning module and the communication module in Embodiment 2 of this utility model.

[0037] Figure 8 This is a schematic diagram of the circuit structure of the positioning module and the voltage management circuit and the communication module and the voltage management circuit in Embodiment 3 of this utility model.

[0038] In the above figures: First housing 1; Charging interface 2; Dust cover 3; Second housing 4; Tear-off structure 5; Adhesive layer 6; Release paper 7; Circuit board 9; Positioning module 10; Communication module 11; Storage module 12; Rechargeable battery 13; Buffer pad 14; Wireless charging coil 15; Insulating layer 16; USB circuit 17; Control module 19; Voltage management circuit 20; Charging power switching circuit 21; Wired charging circuit 22; Signal isolation area 23; First ground wire 231; Second ground wire 232; Third ground wire 233; Fourth ground wire 234; First signal connection line 241; Second signal connection line 242; First through hole 251; Second through hole 252; First ferrite bead 261; Second ferrite bead 262; Power supply unit 100; Accommodation space 1A; Length direction L1 of accommodation space; Width direction L2 of accommodation space; Length direction LA1 of signal isolation area; Width direction LA2 of signal isolation area. Detailed Implementation

[0039] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] Example 1 like Figures 1-6 As shown, Embodiment 1 of this utility model provides an anti-lost patch, wherein the shell structure of the anti-lost patch has an adhesive layer 6 for attaching to the skin or clothing of a target person.

[0041] The circuit structure of the anti-lost patch includes a control module 19, a positioning module 10 for detecting the location of the target person, and a communication module 11 for sending the location of the target person to a receiving terminal; the signal output terminal of the positioning module 10 is electrically connected to the control module 19 through a first signal connection line 241; the signal input terminal of the communication module 11 is electrically connected to the control module 19 through a second signal connection line 242.

[0042] Both the first signal connection line 241 and the second signal connection line 242 can be serial cables. Serial cables can enable unidirectional or bidirectional data transmission.

[0043] The positioning module 10, communication module 11, and control module 19 are all mounted on the circuit board 9; the circuit board 9 is located in the inner cavity formed by the housing structure.

[0044] A signal isolation region 23 is formed on the circuit board 9. The signal isolation region 23 is a region where no signal connection lines of the circuit structure are arranged and no ground wires are arranged. The signal isolation region 23 is located between the positioning module 10 and the communication module 11. The positioning module 10 and the communication module 11 are arranged facing each other in the width direction LA2 of the signal isolation region.

[0045] The signal isolation region 23 and the control module 19 are arranged facing each other along the length direction LA1 of the signal isolation region. The length direction LA1 of the signal isolation region is perpendicular to its width direction LA2. The width direction LA2 of the signal isolation region 23 is perpendicular to the length direction LA1 of the signal isolation region. The width direction LA2 of the signal isolation region 23 and the length direction L1 of the accommodating space 1A may be parallel or perpendicular to each other.

[0046] Along the length direction LA1 of the signal isolation region, the distance between the signal isolation region 23 and the control module 19 is smaller than the distance between the positioning module 10 and the control module 19, and also smaller than the distance between the communication module 11 and the control module 19. Along the length direction LA1 of the signal isolation region, the signal isolation region 23 extends beyond the two side boundaries of the positioning module 10 and the two side boundaries of the communication module 11. That is, the projection range of the positioning module 10 on a straight line parallel to the length direction LA1 of the signal isolation region, and the projection range of the communication module 11 on that straight line, do not exceed the projection range of the signal isolation region 23 on that straight line. Through the above settings, the signal isolation effect between the two is improved.

[0047] In this invention, the boundary of a module can be considered as the boundary of the smallest rectangle that houses the module.

[0048] In the width direction LA2 of the signal isolation area, the first signal connection line 241 is arranged on the circuit board 9 in the area between the positioning module 10 and the signal isolation area 23, and the second signal connection line 242 is arranged on the circuit board 9 in the area between the communication module 11 and the signal isolation area 23. The first ground line 231 and the second ground line 232 are respectively located on the side of the first signal connection line 241 closer to the positioning module 10 and the side farther away from the positioning module 10. The third ground line 233 and the fourth ground line 234 are respectively located on the side of the second signal connection line 242 farther away from the communication module 11 and the side closer to the communication module 11.

[0049] like Figure 6As shown, a first ground wire 231 and a second ground wire 232 are respectively provided on both sides of the first signal connection line 241; a third ground wire 233 and a fourth ground wire 234 are respectively provided on both sides of the second signal connection line 242; the first ground wire 231 and the second ground wire 232 are arranged on the circuit board 9 in the area between the positioning module 10 and the signal isolation area 23; the third ground wire 233 and the fourth ground wire 234 are arranged on the circuit board 9 in the area between the communication module 11 and the signal isolation area 23; the first ground wire 231, the second ground wire 232, the third ground wire 233, and the fourth ground wire 234 are electrically connected to each other to form the grounding terminal of the circuit structure. It should be noted that the ground wires constituting the grounding terminal are not limited to the above-mentioned ground wires, and may also include other ground wires arranged in the circuit board.

[0050] The spacing between the first signal connection line 241 and the first ground line 231, and the spacing between the second ground line 232, are both within the range of [2×W1, 3×W1]; the spacing between the second signal connection line 242 and the third ground line 233, and the spacing between the fourth ground line 234, are both within the range of [2×W2, 3×W2]; where W1 is the width of the first signal connection line 241, and W2 is the width of the second signal connection line 242.

[0051] The signal isolation area 23 is rectangular. In this embodiment, the signal isolation area 23 has a length of 10mm and a width of 1mm. The signal isolation area 23 forms a signal isolation band between the positioning module 10 and the communication module 11.

[0052] like Figure 6 As shown, this utility model employs an isolation strip and grounding shield design. An isolation strip approximately 1mm wide is installed between the positioning module and the communication module. No wiring is permitted within this isolation strip. At least a portion of the signal lines from the two modules and the control module 19 can be routed parallel to both sides of the isolation strip. Grounding protection wires are arranged on both sides of each signal line at 0.2mm intervals, effectively reducing signal interference between modules. The isolation strip is achieved by cutting physical slots on the circuit board to form a signal isolation area 23, ensuring that no wires or components are present within the isolation strip.

[0053] In this embodiment, the widths of the first signal connection line 241, the second signal connection line 242, the first ground line 231, the second ground line 232, the third ground line 233, and the fourth ground line 234 are all 0.1mm. The distance between the edges of the signal lines and the ground lines can range from 2 to 3 times the signal line width; therefore, the spacing here is designed to be 0.2mm.

[0054] The housing structure includes a first housing 1 and a second housing 4, which are adjacent to each other and fixedly connected. The adhesive layer 6 is provided on the side of the second housing 4 away from the first housing 4. The first housing 1 forms a receiving space 1A, and the second housing 4 forms a cover for the receiving space 1A. That is, when the patch is attached to the skin or clothing, the second housing 4 seals the receiving space 1A from the side. The circuit structure of the anti-lost patch is fixedly disposed in the receiving space 1A, which forms the inner cavity of the housing structure.

[0055] The circuit structure of the anti-lost patch includes a power supply module that supplies power to the positioning module 10, the communication module 11, and the control module 19; the power supply module includes a rechargeable battery 13, a wired charging circuit module, and a wireless charging circuit module; the wired charging circuit module and the wireless charging circuit module are switchably electrically connected to the input terminal of the rechargeable battery 13.

[0056] The wired charging circuit module has a charging interface 2, and the wireless charging circuit module has a wireless charging coil 15.

[0057] Along the length L1 of the accommodating space 1A; the rechargeable battery 13 is located in the middle of the accommodating space 1A, the wireless charging coil 15 and the charging interface 2 are located on one side of the rechargeable battery 13, and the positioning module 10, the communication module 11 and the control module 19 are located on the other side of the rechargeable battery 13; the control module 19 is arranged adjacent to the positioning module 10 and adjacent to the communication module 11. The length direction of the rechargeable battery 13 is perpendicular to the length direction L1 of the accommodating space 1A and parallel to the width direction L2 of the accommodating space 1A. When the adhesive layer 6 is adhered to the target person's skin or clothing, the width direction L2 of the accommodating space 1A is parallel to the height direction of the target person, that is, the length direction of the rechargeable battery is parallel to the height direction of the target person.

[0058] The wireless charging circuit module has a wireless charging coil 15.

[0059] The inner wall of the shell structure is provided with a buffer pad 14. The buffer pad can be configured as follows: (1) such as Figure 4As shown, at least two sides of the wireless charging coil 15 are provided with buffer pads 14 fixedly connected to the inner sidewalls of the first housing 1. The buffer pads 14 are located on the outer side of the circuit board, forming a structure that penetrates the circuit board. The distance between the buffer pads 14 and the second housing 4 is smaller than the distance between the circuit structure of the anti-lost patch and the second housing 4, and the distance between the buffer pads 14 and the wall surface of the first housing 1 facing the circuit board is smaller than the distance between the circuit structure of the anti-lost patch and the wall surface of the first housing 1 facing the circuit board. When vibration or other impacts occur, the buffer pads can contact the wall surface of the first housing 1 facing the second housing 4 before the components of the circuit structure, and can contact the second housing 4 before the components of the circuit structure, thereby reducing the adverse effects of vibration and impact on the circuit structure. Preferably, buffer pads 14 can be provided on both sides of the wireless charging coil 15 to provide better protection for the wireless charging coil 15.

[0060] (2) The buffer pad 14 can be set on the circuit board, that is, it contacts the housing before the circuit board during vibration and impact. This arrangement is not shown in the figure.

[0061] (3) The buffer pad 14 may be disposed on the wall of the first housing facing the circuit board and the wall of the second housing facing the circuit board. This arrangement is not shown in the figure.

[0062] The first housing 4 has a charging interface 2 on its side; the charging connector 2 has a dust cover 3.

[0063] The receiving terminal is a mobile terminal (such as a mobile phone, tablet computer, etc.) or a fixed terminal (such as a desktop computer used as a monitoring device).

[0064] The release paper 7 forms a tear-off structure 5 extending outwards and not covered by the adhesive layer 6. That is, by pulling the tear-off structure 5 outwards, the release paper 7 can be torn off, allowing it to be adhered to the body or clothing using the adhesive layer 6. The tear-off structure 5 may have tear tabs.

[0065] The first housing 1 may be provided with a positioning protrusion, and the second housing 4 may be provided with a positioning groove that cooperates with the positioning protrusion; or, the first housing 1 may be provided with a positioning groove, and the second housing 4 may be provided with a positioning protrusion that cooperates with the positioning groove.

[0066] Release paper 7 is covered on the adhesive layer 6. The adhesive layer 6 is an adhesive layer with pressure-sensitive adhesive or a silicone patch. The control module 19 can be electrically connected to an alarm module.

[0067] Figure 1This is a three-dimensional perspective view of the present invention. The present invention has an overall thin rectangular structure, 6cm long, 4cm wide, and 0.8cm thick. The surface of the first housing 1 is made of polycarbonate, and a concealed Type-C charging port 2 is visible on the right side. The port is covered by a sliding dust cover 3, which is connected to the housing via a sliding rail. The outer edge of the second housing 4 has a PET tear-off structure 5, and the middle part is a medical-grade pressure-sensitive adhesive layer 6, with a glassine paper release paper 7 covering the adhesive layer. The tear-off structure 5 can be a tear-off structure. The three-dimensional perspective view shows the overall appearance of the patch, wherein the first housing can have a frosted surface, the charging port 2 and dust cover are set on the side, and the second housing has an adhesive layer and a tear-off structure. The dimensions of the first housing 1 can be 6cm long, 4cm wide, and 0.8cm thick, and the adhesive layer is 8cm long and 4cm wide. Optionally, the adhesive layer can be replaced with a medical silicone patch instead of pressure-sensitive adhesive to enhance reusability. Optionally, the charging port 2 can also be replaced with an existing Micro-USB interface instead of a Type-C interface.

[0068] The first housing 1 and the second housing 4 can be sealed by welding; the internal core is a circuit board 9, on which a positioning module 10, a communication module 11, a storage module 12, a control module 19, a voltage management circuit 20, a charging power switching circuit 21, and a rechargeable battery 13 are installed. Silicone cushioning pads 14 can be wrapped around the circuit board and on both sides of the wireless charging coil 15. Figure 4 Only the buffer pads on both sides of the wireless charging coil 15 are marked, and the circuit connection lines between components are not marked. The wireless charging coil 15 is located on the battery side of the circuit board. The wireless charging coil 15 can be made by winding copper enameled wire, with a diameter of 2cm and a thickness of 0.1cm. An insulating layer 16 of polyimide film material is provided between the wireless charging coil 15 and the circuit board; the voltage management circuit 20 is located at the edge of the circuit board and is connected to the positioning module, communication module, storage module and control module through wires. The charging power switching circuit 21 connects the rechargeable battery, the wired charging interface and the wireless charging coil. The control module 19 can be a microcontroller (MCU) or a DSP.

[0069] Polyimide film is a high-performance insulating and heat-insulating material. Since the surface of a circuit board is typically not perfectly smooth, polyimide film effectively prevents the wireless charging coil 15 from contacting any possible conductive points on the circuit board, avoiding short circuits that could burn out the circuit or battery cells. It also isolates the heat generated by the wireless charging coil 15 during wireless charging, to some extent preventing direct heat conduction to the circuit board, thereby reducing the risk of short circuits and minimizing the risk of device damage and safety hazards.

[0070] The core components and their connections in this utility model are as follows: like Figure 1As shown, the housing assembly includes a first housing 1 and a second housing 4. Both the first housing 1 and the second housing 4 are made of polycarbonate and are welded together to form a sealed cavity 8, achieving an IP65 protection rating and providing dust and water resistance. Positioning posts on the inner side of the second housing are embedded in positioning holes in the circuit board 9 to secure the internal components.

[0071] like Figure 3 As shown, the anti-lost patch consists of a second shell 4, an adhesive layer 6, and a release paper 7 arranged sequentially from top to bottom along its thickness direction.

[0072] Circuit board 9 is the core component. A positioning module 10, a control module 19, and a communication module 11 are soldered to one end of circuit board 9. A storage module 12 is soldered near the center. The storage module 12 can use an 8GB NAND Flash chip, and the underlying layer is connected to a rechargeable battery 13 via wires. The positioning module 10 can use a GPS or BeiDou dual-mode chip, and the communication module 11 can use a 4G, 5G, or NB-IoT module. The rechargeable battery 13 can be a rechargeable battery, such as a 500mAh lithium polymer battery. In extreme cases, such as when the device is in a signal dead zone (e.g., a basement or elevator), and cannot upload positioning data in real time, the positioning data can be temporarily stored locally, i.e., stored in the storage module. Once the signal is restored, the storage module will resend the data to the receiving terminal, forming a complete and uninterrupted trajectory chain. Alternatively, for areas with limited signal coverage, the positioning module can also use only a GPS or BeiDou single-mode module.

[0073] The voltage management circuit 20 is fixed to the edge of the circuit board by soldering, and its pins are connected to: ① positioning module 10; ② communication module 11; ③ storage module 12; ④ control module 19; ⑤ rechargeable battery 13, respectively, to realize discharge control. The charging power switching circuit 21 connects the rechargeable battery 13, the wired charging circuit 22, and the wireless charging coil 15 to realize charging management. The charging power switching circuit 21 can be a switch, that is, one electrical connection terminal of the switch is electrically connected to the rechargeable battery 13, and the other electrical connection terminal of the switch can be switched to be electrically connected to the wireless charging coil 15 and the wired charging circuit 22.

[0074] A buffer pad 14, made of medical-grade silicone or low-hardness TPU, surrounds the circuit board and both sides of the wireless charging coil, fitting tightly against the inner wall of the housing to cushion vibrations during impacts. The buffer pad can be fixed to the side of the first housing cavity, with a gap of 0.1cm-0.2cm between it and both the first and second housings. Simultaneously, the material's low dielectric constant significantly reduces interference with wireless signals. Its lightweight structural design avoids increasing the overall thickness of the patch.

[0075] For charging modules, such as Figure 1 , Figure 4 , Figure 5This invention enables both wired and wireless charging. In the wired charging structure, the charging interface 2 is sequentially connected to the charging power switching circuit 21 via the USB circuit 17, the wired charging circuit 22, and the dust cover 3 has a sliding stroke of 0.5cm and is flush with the outer shell surface when fully covered. In the wireless charging structure, the wireless charging coil 15 is isolated from the circuit board 9 by the insulating layer 16, and the output end of the wireless charging coil 15 is connected to the rechargeable battery 13 via the charging power switching circuit. The input end of the USB circuit 17 forms the charging interface 2. The USB circuit 17 is used to identify and support charging protocols of different power levels, allowing external power voltage to enter the interior and serving to connect or disconnect the power supply. The wired charging circuit 22 is used to convert the output voltage of the USB circuit 17 into a voltage suitable for charging the rechargeable battery 13. Figure 5 The USB circuit 17 between the charging port 2 and the wired charging circuit 22 is omitted. Figure 5 The differential signal line connected to the control module 19 is the information transmission path for the control module 19 to regulate the charging protocol. The USB circuit 17 safely introduces the power through the charging protocol into the voltage management circuit, controlling the power on / off and participating in power transmission.

[0076] For paste layers, such as Figure 1 , Figure 3 As shown, the pressure-sensitive adhesive material adhesive layer 6 is 8cm long, 4cm wide, and 0.2cm thick. The tear-off structure 5 is 1cm long and 0.5cm wide, aligned with the edge of the release paper 7, making it easy for the user to peel off the release paper and attach the patch to the carrier. The release paper 7 can be the same size as the pressure-sensitive adhesive layer. In use, hold the tear-off structure and pull it evenly outwards in the direction away from the outer shell to completely detach the release paper from the pressure-sensitive adhesive layer, then stick it to clothing or skin.

[0077] The positioning module 10 and the communication module 11 are connected to the control module 19 via circuit board wiring. The communication module 11 can receive or transmit signals via an antenna. The antenna can be integrated inside the first housing. Figure 3 It is not marked in the text and may be located between the first housing and the circuit board.

[0078] After the device is turned on, in densely populated areas, the positioning module 10 acquires location data every 10 seconds; in normal environments, it acquires location data every 30 seconds. This data is transmitted via circuit board wiring to the control module 19. The main control module then transmits the data to the communication module. The communication module encrypts the data and sends it to the bound terminal, such as a mobile app, via a 4G or 5G network. When the user exceeds the preset electronic fence range, the terminal sends a command to the control module via the communication module 11, which then triggers the built-in alarm module to emit an 80-decibel alarm. The alarm module can be soldered to the edge of the circuit board (not shown in the diagram). The alarm module can be a buzzer. The positioning module 10 acquiring data at fixed intervals is existing technology.

[0079] The wired charging method is as follows: slide the dust cover 3 to expose the charging interface 2, insert the data cable, the USB circuit 17 supplies power to the wired charging circuit 22, and the current passes through the charging power switching circuit 21 to charge the rechargeable battery 13. The control module 19 monitors the battery charging status in real time and stops when fully charged.

[0080] The wireless charging method is as follows: the patch is placed on the charging board, and the AC power supply provides power. The wireless charging coil 15 senses and outputs AC current. The charging power switching circuit automatically opens the circuit. The current passes through the rectifier circuit (not shown in the figure) above the insulating layer 16, converting the AC power into DC power. The DC power is used to charge the rechargeable battery 13. The control module 19 monitors the battery charging status in real time and stops when fully charged.

[0081] The charging port 2 and the wireless charging coil 15 are controlled by the same charging power switching circuit 21, which supports both wired emergency fast charging and wireless convenient charging, extending the battery life by 50% compared to the existing single charging method patch.

[0082] This utility model employs miniaturized integration. An ultra-thin thickness of 0.8cm is achieved through circuit board 9 and ultrasonic welding 8, solving the problems of large size and inconvenience of traditional equipment. This solution utilizes micro-amplitude high-frequency vibration ultrasonic welding technology, employing 40-100kHz high-frequency vibration to achieve a 5-10μm micro-amplitude, which can reduce the risk of delamination and warping of the circuit board due to thermal effects. The ultrasonic welding technology, vibration frequency, and amplitude range used in this solution are all existing technologies. In terms of PCB functional module layout, a partitioned design is adopted for functional modules and power supply sections. Figure 4 In the indicated placement orientation, core functional modules such as the positioning module, communication module, and control module are densely arranged on the side of the battery furthest from the coil and close to the antenna signal input end, minimizing the high-frequency signal transmission path and reducing signal attenuation and electromagnetic interference. The power module is centrally located on one side of the battery on the PCB, with the heavier rechargeable battery positioned in the middle of the circuit board and the lighter wireless charging module positioned on the other side of the battery on the circuit board. This distributes the overall weight centrally, preventing device tilting or discomfort due to uneven module distribution. This partitioned structure also reduces horizontal space occupancy by approximately 40%. Circuit board 9 can be a multilayer circuit board (multilayer PCB). The multilayer circuit board includes a top layer, a bottom layer, a power layer, a signal layer, and a ground layer; the top and bottom surfaces of the multilayer circuit board are used to place components. The various layers of the multilayer circuit board are existing technologies known to those skilled in the art.

[0083] In a preferred embodiment, this invention employs the existing BTB (Board-to-Board) module integration design structure, i.e., module mounting technology. This not only achieves extreme miniaturization and makes full use of vertical space, but also allows for flexible assembly of different modules as needed. Simultaneously, the modular layout of the circuit board integrates the scattered functional components of a traditional PCB into compact modules, optimizing space utilization and reducing transmission loss due to circuit centralization, effectively avoiding the ineffective energy consumption of discrete components operating independently. Traditional circuit board soldering requires chip removal and resoldering during debugging, design, and maintenance, incurring significant costs and time, and potentially damaging surrounding components. In contrast, the BTB module integration design only requires disassembling and installing modules as needed during debugging and design. For example, the positioning module in this product can be replaced with a single Beidou module or a GPS / Beidou dual module as required, greatly improving design flexibility while reducing the time and cost of module replacement. The BTB module integration design structure in this invention utilizes existing technology.

[0084] The effects or features of this utility model are as follows: (1) Ease of wearing: The thin sheet design can be adapted to various carriers such as clothing and skin. The medical pressure-sensitive adhesive is firmly attached and skin-friendly, solving the problem of traditional devices such as clothing and bracelets relying on specific carriers and being restrictive to wear. The thickness of this utility model product is, for example, 0.8cm.

[0085] (2) Charging flexibility and speed: This utility model supports both existing Type-wired charging and Qi wireless charging, adapting to the usage habits of different groups such as the elderly and children, and solving the problems of single charging method and cumbersome operation of existing anti-lost patch technology. Type-wired charging can be protected by a dust cover, and Qi wireless charging does not require plugging and unplugging. The wireless charging adopts the existing Qi1.3 wireless charging technology, supports a 15W fast charging rate, shortens the charging time, and significantly reduces the risk of patients or the elderly getting lost due to long waiting time during the charging process; at the same time, the existing magnetic positioning charging function can be used to reduce the difficulty of use for the elderly, children and other groups with weaker operation ability.

[0086] (3) This utility model offers precise positioning, stable battery life, and adaptability. It combines high-precision dual-mode positioning with an adjustable frequency method, balancing positioning accuracy with low power consumption. This addresses the issue of weak signals in indoor and densely populated areas, reducing the risk of misjudgment and getting lost due to positioning errors. The positioning module is compatible with multiple module models, meeting the adaptive adaptation requirements of single GPS, single BeiDou, or dual-mode models, aligning with the national trend of promoting the use of domestically produced single BeiDou positioning terminal equipment. High-precision dual-mode positioning can achieve an accuracy of 1 meter.

[0087] (4) The structure and materials of this utility model are reliable. The polycarbonate shell structure and ultrasonic welding can achieve, for example, IP65 dustproof and waterproof rating, and the silicone cushioning pad is impact-resistant, adapting to complex environments such as rain and collisions, solving the problems of easy wear and insufficient protection of existing equipment. The sliding dust cover is made of medical-grade silicone material, which has undergone nano-level polishing and biocompatibility testing, making it more skin-friendly. In addition, the shell material can be replaced with ABS material to reduce costs.

[0088] (5) This utility model has low energy consumption. The voltage management circuit adopts an integrated multi-channel multi-voltage output chip module, which reduces the use of resistors, capacitors and their large inductors, improves power conversion efficiency, reduces ineffective energy consumption, and greatly reduces the space occupied by traditional power supply circuits.

[0089] (6) Anti-detachment design of this utility model. The combination of the adhesive layer 6 of medical pressure-sensitive adhesive material and the tear-off structure 5 not only ensures the adhesion strength, such as being able to withstand a 5N pull force without falling off, but also facilitates the replacement of the carrier, solving the problem of traditional patches being difficult to remove after being pasted.

[0090] Example 2 The difference between Embodiment 2 and Embodiment 1 is that: a first array consisting of multiple first through holes 251 is formed on the circuit board 9 between the positioning module 10 and the signal isolation region 23; the first array extends at least in the length direction LA1 of the signal isolation region; a second array consisting of multiple second through holes 252 is formed on the circuit board 9 between the communication module 11 and the signal isolation region 23; the second array extends at least in the length direction LA1 of the signal isolation region; both the first through holes 251 and the second through holes 252 penetrate the circuit board 9 along its height direction. The length direction LA1 and the width direction LA2 are both perpendicular to the height direction of the circuit board 9.

[0091] In the width direction LA2 of the signal isolation region, the first array is located between the second ground line 232 and the signal isolation region 23, and the second array is located between the third ground line 233 and the signal isolation region 23.

[0092] like Figure 7 As shown, the first array includes at least two rows of first through-hole structures arranged at intervals along the width direction LA2 of the signal isolation region 23, that is, each row of first through-hole structures is arranged at intervals along the width direction LA2; each row of first through-hole structures includes a plurality of first through-holes 251 arranged at intervals along the length direction LA1 of the signal isolation region, thereby causing the first array to extend along the length direction LA1 of the signal isolation region; the first through-holes 251 in the first through-hole structures in different rows are staggered from each other; The second array includes at least two rows of second through-hole structures arranged sequentially at intervals in the width direction LA2 of the signal isolation region 23, that is, each row of first through-hole structures is arranged sequentially at intervals in the width direction LA2; each row of second through-hole structures includes a plurality of second through-holes 252 arranged sequentially at intervals in the length direction LA1 of the signal isolation region, thereby causing the second array to extend in the length direction LA1 of the signal isolation region; the second through-holes 252 in the second through-hole structures located in different rows are staggered.

[0093] In one embodiment, a noise-blocking structure is provided on the outside of each first via 251 and each second via 252 on each of the top, bottom, power, and signal layers of the multilayer circuit board. In another embodiment, a grounding pad is formed on the outside of each first via 251 and each second via 252 on the ground layer. Alternatively, the noise-blocking structure and the grounding pad embodiment can be implemented simultaneously. Insulating material pads are provided on the outside of the first via 251 and the second via 252 on the signal layer to form the noise-blocking structure.

[0094] Preferably, along the length direction LA1 of the signal isolation area, both the first array and the second array extend beyond the two side boundaries of the positioning module 10 and also extend beyond the two side boundaries of the communication module 11.

[0095] like Figure 7 As shown, through-holes are formed on the circuit board on both sides of the signal isolation area 23, close to the signal isolation area but not exceeding the ground line. The diameter of the first through-hole 251 and the second through-hole 252 can be in the range of [0.2mm-0.25mm]. The center-to-center distance between adjacent first through-holes 251 and adjacent second through-holes 252 can be 1.5mm. The spacing between adjacent rows of first through-hole structures and adjacent rows of second through-hole structures can be 1.5mm. The through-holes extend from the top layer to the bottom layer of the circuit board; the through-holes in the two rows of through-hole structures can be staggered. In the width direction LA2, the spacing between the first array and the second ground line 232 can be twice the width of the second ground line 232, and the spacing between the second array and the third ground line 233 can be twice the width of the third ground line 233.

[0096] Example 3 The difference between Embodiment 3 and Embodiment 1 is that a first filter circuit is provided between the power supply terminal of the voltage management circuit 20 in the power supply module and the power receiving terminal of the positioning module 10; a second filter circuit is provided between the power supply terminal of the voltage management circuit 20 in the power supply module and the power receiving terminal of the communication module 11. The first filter circuit is located near the power receiving terminal of the positioning module 10, and the second filter circuit is located near the power receiving terminal of the communication module 11.

[0097] like Figure 8 As shown, the first filtering circuit includes a first ferrite bead 261, a first capacitor structure, and a second capacitor structure; the power supply terminal of the power supply module, one end of the first ferrite bead 261, and one end of the first capacitor structure are electrically connected to each other; the power receiving terminal of the positioning module 10, the other end of the first ferrite bead 261, and one end of the second capacitor structure are electrically connected to each other; the other ends of the first capacitor structure and the second capacitor structure are both grounded. The second filtering circuit includes a second ferrite bead 262, a third capacitor structure, and a fourth capacitor structure; the power supply terminal of the power supply module, one end of the second ferrite bead 262, and one end of the third capacitor structure are electrically connected to each other; the power receiving terminal of the communication module 11, the other end of the second ferrite bead 262, and one end of the fourth capacitor structure are electrically connected to each other; the other ends of the third capacitor structure and the fourth capacitor structure are both grounded.

[0098] The power supply module includes a voltage management circuit 20 for voltage conversion, and the output terminal of the rechargeable battery 13 is electrically connected to the input terminal of the voltage management circuit 20; the output terminal of the voltage management circuit 20 forms the power supply terminal of the power supply module.

[0099] In the first filter circuit, the first ferrite bead 261 forms a series impedance element, the first capacitor structure forms the ground capacitance (bypass capacitor) at the input terminal of the first ferrite bead 261, and the second capacitor structure forms the ground capacitance (decoupling capacitor) at the output terminal.

[0100] In the second filter circuit, the second ferrite bead 262 forms a series impedance element, the third capacitor structure forms the ground capacitance (bypass capacitor) at the input terminal of the second ferrite bead 262, and the fourth capacitor structure forms the ground capacitance (decoupling capacitor) at the output terminal.

[0101] The first capacitor structure includes a first capacitor C1 and a second capacitor C2; one end and the other end of the parallel structure formed by the first capacitor C1 and the second capacitor C2 respectively form one end and the other end of the first capacitor structure.

[0102] The second capacitor structure includes a third capacitor C3 and a fourth capacitor C4; one end and the other end of the parallel structure formed by the third capacitor C3 and the fourth capacitor C4 respectively form one end and the other end of the second capacitor structure.

[0103] The third capacitor structure is the fifth capacitor C5; one end of the fifth capacitor C5 and the other end of the third capacitor structure are respectively formed at one end and the other end of the third capacitor structure.

[0104] The fourth capacitor structure includes a sixth capacitor C6, a seventh capacitor C7, and an eighth capacitor C8 connected in parallel to form a parallel capacitor structure. One end of the parallel capacitor structure and the other end of the fourth capacitor structure are respectively formed at one end and the other end of the fourth capacitor structure.

[0105] Both the first and second filter circuits form a Π-type filter design, thereby reducing the impact of noise from the communication module on the power receiving end of the positioning module.

[0106] Both the first ferrite bead 261 and the second ferrite bead 262 are 600Ω@100MHz, meaning that the total impedance of the ferrite beads reaches 600Ω at a frequency of 100MHz.

[0107] The capacitance values ​​of the first capacitor C1 and the second capacitor C2 can be selected as 10μF and 0.1μF ceramic capacitors, respectively; the capacitance values ​​of the third capacitor C3 and the fourth capacitor C4 can be selected as 1μF and 0.01μF ceramic capacitors, respectively; the capacitance value of the fifth capacitor C5 can be selected as 22μF ceramic capacitor; and the capacitance values ​​of the sixth capacitor C6, the seventh capacitor C7, and the eighth capacitor C8 can be selected as 10μF, 1μF, and 0.1μF ceramic capacitors, respectively.

[0108] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0109] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model. After reading this utility model, any modifications of various equivalent forms to this utility model by those skilled in the art fall within the scope defined by the appended claims. Where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

Claims

1. An anti-lost patch, wherein the shell structure of the anti-lost patch has an adhesive layer (6); characterized in that, The circuit structure of the anti-lost patch includes a control module (19), a positioning module (10) for detecting the location of the target person, and a communication module (11) for sending the location of the target person to the receiving terminal. The signal output terminal of the positioning module (10) is electrically connected to the control module (19) through the first signal connection line (241); The signal input terminal of the communication module (11) is electrically connected to the control module (19) via the second signal connection line (242); The positioning module (10), communication module (11), and control module (19) are all mounted on the circuit board (9); the circuit board (9) is located in the inner cavity formed by the housing structure; A signal isolation region (23) is formed on the circuit board (9) between the positioning module (10) and the communication module (11). The signal isolation region (23) is a region where no signal connection lines of the circuit structure are arranged and no ground wire is arranged. The positioning module (10) and the communication module (11) are arranged facing each other in the width direction (LA2) of the signal isolation region (23). The signal isolation region (23) and the control module (19) are arranged facing each other in the length direction (LA1) of the signal isolation region.

2. The anti-lost patch according to claim 1, characterized in that, Along the length direction (LA1) of the signal isolation area, the signal isolation area (23) extends beyond the two side boundaries of the positioning module (10) and also extends beyond the two side boundaries of the communication module (11); A first ground wire (231) and a second ground wire (232) are respectively provided on both sides of the first signal connection line (241); The second signal connection line (242) is provided with a third ground wire (233) and a fourth ground wire (234) on both sides respectively. In the width direction (LA2) of the signal isolation area, the first signal connection line (241), the first ground line (231), and the second ground line (232) are all arranged on the circuit board (9) in the area between the positioning module (10) and the signal isolation area (23). The second signal connection line (242), the third ground line (233), and the fourth ground line (234) are all arranged on the circuit board (9) in the area between the communication module (11) and the signal isolation area (23). The first ground line (231) and the second ground line (232) are respectively located on the side of the first signal connection line (241) closer to the positioning module (10) and the side away from the positioning module (10). The third ground line (233) and the fourth ground line (234) are respectively located on the side of the second signal connection line (242) away from the communication module (11) and the side closer to the communication module (11). The first ground wire (231), the second ground wire (232), the third ground wire (233), and the fourth ground wire (234) are electrically connected to each other.

3. The anti-lost patch according to claim 2, characterized in that, The signal isolation area (23) is rectangular, and the length of the signal isolation area (23) ranges from [8mm, 12mm], and the width of the signal isolation area (23) ranges from [0.8mm, 1.2mm]; the width direction (LA2) of the signal isolation area (23) is perpendicular to the length direction (LA1) of the signal isolation area. The spacing between the first signal connection line (241) and the first ground line (231), and the spacing between the first signal connection line (241) and the second ground line (232) are both within the range of [2×W1, 3×W1]. The spacing between the second signal connection line (242) and the third ground line (233), and the spacing between the second signal connection line (242) and the fourth ground line (234) are both in the range of [2×W2, 3×W2]; Wherein, W1 is the width of the first signal connection line (241), and W2 is the width of the second signal connection line (242).

4. The anti-lost patch according to claim 2, characterized in that, The circuit board (9) is a multilayer circuit board; A first array consisting of a plurality of first through holes (251) is formed on the circuit board (9) between the positioning module (10) and the signal isolation area (23); the first array extends at least in the length direction (LA1) of the signal isolation area; A second array consisting of a plurality of second through holes (252) is formed on the circuit board (9) between the communication module (11) and the signal isolation region (23); the second array extends at least in the length direction (LA1) of the signal isolation region; The first through hole (251) and the second through hole (252) both penetrate the circuit board (9) along the height direction of the circuit board (9); the width direction (LA2) and length direction (LA1) of the signal isolation area (23) are both perpendicular to the height direction of the circuit board (9); In the width direction (LA2) of the signal isolation region, the first array is located between the second ground line (232) and the signal isolation region (23), and the second array is located between the third ground line (233) and the signal isolation region (23).

5. The anti-lost patch according to claim 4, characterized in that, The first array includes at least two rows of first through-hole structures arranged sequentially at intervals in the width direction (LA2) of the signal isolation region (23). Each row of first through-hole structures includes a plurality of first through-holes (251) arranged sequentially at intervals in the length direction (LA1) of the signal isolation region, thereby extending the first array in the length direction (LA1) of the signal isolation region. The first through-holes (251) in the first through-hole structures in different rows are staggered. The second array includes at least two rows of second via structures spaced apart in the width direction (LA2) of the signal isolation region (23). Each row of second via structures includes a plurality of second vias (252) spaced apart in the length direction (LA1) of the signal isolation region, thereby extending the second array in the length direction (LA1) of the signal isolation region. The second vias (252) in the second via structures in different rows are staggered.

6. The anti-lost patch according to claim 4, characterized in that, On each of the top, bottom, power, and signal layers of the multilayer circuit board, a noise blocking structure is provided on the outside of each first via (251) and on the outside of each second via (252); and / or A grounding pad is formed on the ground layer of the multilayer circuit board on the outside of each first through hole (251) and on the outside of each second through hole (252).

7. The anti-lost patch according to any one of claims 1-6, characterized in that, The shell structure includes a first shell (1) and a second shell (4) that are arranged adjacently and fixedly connected to each other; the adhesive layer (6) is provided on the side of the second shell (4) away from the first shell (1); The first housing (1) forms a receiving space (1A), and the second housing (4) forms a cover of the receiving space (1A). The circuit structure of the anti-lost patch is fixedly disposed in the receiving space (1A), and the receiving space (1A) forms the inner cavity of the housing structure.

8. The anti-lost patch according to claim 7, characterized in that, The circuit structure of the anti-lost patch has a power supply module that supplies power to the positioning module (10), the communication module (11), and the control module (19); The power supply module includes a rechargeable battery (13), a wired charging circuit module, and a wireless charging circuit module; The wired charging circuit module and the wireless charging circuit module can be switched to be electrically connected to the input terminal of the rechargeable battery (13); A first filter circuit is provided between the power supply end of the power supply module and the power receiving end of the positioning module (10); A second filter circuit is provided between the power supply end of the power supply module and the power receiving end of the communication module (11).

9. The anti-lost patch according to claim 8, characterized in that, The first filter circuit includes a first ferrite bead (261), a first capacitor structure, and a second capacitor structure; the power supply end of the power supply module, one end of the first ferrite bead (261), and one end of the first capacitor structure are electrically connected to each other; the power receiving end of the positioning module (10), the other end of the first ferrite bead (261), and one end of the second capacitor structure are electrically connected to each other; the other end of the first capacitor structure and the other end of the second capacitor structure are both grounded. The second filter circuit includes a second ferrite bead (262), a third capacitor structure, and a fourth capacitor structure; the power supply end of the power supply module, one end of the second ferrite bead (262), and one end of the third capacitor structure are electrically connected to each other; the power receiving end of the communication module (11), the other end of the second ferrite bead (262), and one end of the fourth capacitor structure are electrically connected to each other; and the other ends of the third capacitor structure and the other ends of the fourth capacitor structure are both grounded.

10. The anti-lost patch according to claim 8, characterized in that, The wired charging circuit module has a charging interface (2), and the wireless charging circuit module has a wireless charging coil (15). Along the length direction (L1) of the accommodating space (1A); the rechargeable battery (13) is located in the middle of the accommodating space (1A), the wireless charging coil (15) and the charging interface (2) are located on one side of the rechargeable battery (13), and the positioning module (10), the communication module (11) and the control module (19) are located on the other side of the rechargeable battery (13); the control module (19) is arranged adjacent to the positioning module (10) and adjacent to the communication module (11); The width direction (LA2) of the signal isolation region (23) is parallel to the length direction (L1) of the receiving space (1A) and perpendicular to the length direction (LA1) of the signal isolation region; the length direction of the rechargeable battery (13) is perpendicular to the length direction (L1) of the receiving space (1A). When the adhesive layer (6) is adhered to the skin or clothing of the target person, the width direction (L2) of the accommodating space (1A) is parallel to the height direction of the target person.

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