Flexible wearable pressure sensor array assembly and monitor

Abstract

The utility model discloses a flexible wearable pressure sensor array assembly and a monitor, and relates to the technical field of pressure sensing. The pressure sensor comprises a flexible circuit board, at least one interdigital electrode, at least one LED lamp and an LED substrate, the LED lamp is located on the LED substrate, the interdigital electrode is located on the flexible circuit board, the interdigital electrode is used for collecting change signals of the pressure sensor, the interdigital electrode further comprises a first terminal and a second terminal, and the first terminal is connected with the second terminal. The LED substrate is further provided with a power supply port and an LED lamp signal port, the first terminal is electrically connected with the LED lamp signal port, and the second terminal is electrically connected with the power supply port; according to the flexible wearable pressure sensor array assembly provided by the embodiment of the invention, the LED lamp group and the pressure sensor are separately arranged on different circuit boards and are connected through the signal line, so that the limitation of portability in the prior art is effectively improved, and the LED can be flexibly arranged at a position which is more suitable for observation or operation without being limited by the layout of the pressure sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensing, and in particular to a flexible wearable pressure sensor array component and a monitoring instrument. Background Art

[0002] Existing flexible wearable pressure sensor arrays are mainly used for testing human physiological signals. They can detect changes in pressure and preliminarily analyze the trends of physiological signals. Flexible wearable pressure sensor arrays are usually composed of multiple resistive pressure sensors and LED light arrays, which can monitor and reflect pressure changes in real time.

[0003] However, the multiple resistive pressure sensors and the LED light array for processing signals on the flexible wearable pressure sensor array are usually designed on the same substrate close to each other. When such a flexible wearable pressure sensor needs to be worn on the body for real-time monitoring, users will inevitably encounter challenges in the portability of the device. Utility Model Content

[0004] The purpose of the utility model is to address the defects and shortcomings of the prior art. On the one hand, a flexible wearable pressure sensor array assembly is provided, including a flexible circuit board, at least one interdigital electrode, at least one LED lamp and an LED substrate, wherein the LED lamp is located on the LED substrate, the interdigital electrode is located on the flexible circuit board, the interdigital electrode is used to collect a change signal of a pressure sensor, the interdigital electrode further includes a first terminal and a second terminal, and the LED substrate is further provided with a power supply port and an LED lamp signal port, wherein the first terminal is electrically connected to the LED lamp signal port, and the second terminal is electrically connected to the power supply port;

[0005] During operation, the power supply port supplies power to the second terminal, the current first flows through the interdigitated electrodes, then flows out from the first terminal, and is transmitted to the LED lamp signal port, and finally flows back to the power supply port after passing through the LED lamp.

[0006] The number of the interdigital electrodes and the LED lamps is 9, every three interdigital electrodes form an interdigital electrode group, every three interdigital electrode groups form an interdigital electrode array, every three LED lamps form an LED lamp group, and every three LED lamp groups form an LED lamp array.

[0007] The power supply port includes a main power supply interface and a secondary power supply interface, the main power supply interface is used to connect to a power source, the secondary power supply interface is connected to the positive pole of the main power supply interface, and the secondary power supply interface draws power from the main power supply interface and is used to power the interdigital electrode group.

[0008] In the interdigital electrode group, the second terminal of each interdigital electrode is electrically connected in sequence from left to right, and is finally connected to the secondary power supply interface.

[0009] The second terminal is connected to the secondary power supply interface through a signal line, and the first terminal is connected to the LED light signal port through a signal line;

[0010] The LED lamp signal ports are connected to the LED lamps respectively.

[0011] The signal wire is a copper wire.

[0012] The LED lamp is a red LED light emitting diode in a 0603 package.

[0013] Pressure sensors are also arranged on the interdigital electrodes, and every three pressure sensors form a pressure sensor group, and every three pressure sensor groups form a pressure sensor array.

[0014] On the other hand, the utility model also provides a monitoring instrument including the above technical features.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] The flexible wearable pressure sensor array assembly provided in this embodiment effectively improves the portability limitations of the prior art by placing the LED light group and the pressure sensor on different circuit boards and connecting them through signal lines, so that the LED can be flexibly placed in a position that is more suitable for observation or operation without being restricted by the layout of the pressure sensor.

[0017] In addition, the use of interdigital electrodes optimizes signal acquisition and processing, and can more sensitively capture tiny changes in resistance caused by pressure changes, thereby improving the response speed and accuracy of the entire monitoring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a PCB connection diagram of the flexible circuit board of the utility model;

[0021] Figure 3This is the PCB connection diagram of the LED substrate of the utility model.

[0022] Description of reference numerals:

[0023] 1. Flexible circuit board;

[0024] 2. pressure sensor array; 21. pressure sensor group; 211. pressure sensor;

[0025] 3. LED light array; 31. LED light group; 311. LED light;

[0026] 4. interdigital electrode array; 41. interdigital electrode group; 411. interdigital electrode; 412. first terminal; 413. second terminal;

[0027] 5. LED substrate;

[0028] 6. Secondary power supply interface;

[0029] 7. Main power supply interface. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Reference Figure 1-3 , a flexible wearable pressure sensor array 2 component is proposed, including a flexible circuit board 1, at least one interdigital electrode 411, at least one LED lamp 311 and an LED substrate 5, wherein the LED lamp 311 is located on the LED substrate 5, the interdigital electrode 411 is located on the flexible circuit board 1, the interdigital electrode 411 is used to collect a change signal of the pressure sensor 211, the interdigital electrode 411 also includes a first terminal 412 and a second terminal 413, the LED substrate 5 is also provided with a power supply port and an LED lamp signal port, the first terminal 412 is electrically connected to the LED lamp signal port, and the second terminal 413 is electrically connected to the power supply port;

[0038] When working, the power supply port supplies power to the second terminal 413, and the current first flows through the interdigital electrode 411, then flows out from the first terminal 412, and is transmitted to the LED light signal port, and finally flows back to the power supply port after passing through the LED light.

[0039] Reference Figure 1 , the interdigitated electrode array is designed to be physically aligned with the LED light array.

[0040] The flexible wearable pressure sensor array assembly provided in this embodiment effectively improves the portability limitations of the prior art by placing the LED light group and the pressure sensor on different circuit boards and connecting them through signal lines, so that the LED can be flexibly placed in a position that is more suitable for observation or operation without being restricted by the layout of the pressure sensor.

[0041] At the same time, the use of interdigital electrodes optimizes signal acquisition and processing, and can more sensitively capture tiny changes in resistance caused by pressure changes, thereby improving the response speed and accuracy of the entire monitoring system.

[0042] Optionally, the number of the interdigitated electrodes 411 and the LED lamps 311 is 9, every three of the interdigitated electrodes 411 form an interdigitated electrode group 41, every three of the interdigitated electrode groups 41 form an interdigitated electrode array 4, every three of the LED lamps 311 form an LED lamp group 31, and every three of the LED lamp groups 31 form an LED lamp array 3.

[0043] In this embodiment, the number of interdigitated electrodes and LED lamps is set to 9, which are organized into interdigitated electrode groups and LED lamp groups in groups of 3, and further combined into interdigitated electrode arrays and LED lamp arrays. This design enables each interdigitated electrode and each LED lamp to be controlled through a separate connection, and they operate independently without interfering with each other.

[0044] This embodiment significantly improves the reliability of the system and effectively reduces the risk of single point failure. In addition, the independent control connection also improves flexibility and control accuracy, allowing more precise operation in applications that require fine adjustment of electrode reaction or LED brightness. It also facilitates maintenance and upgrades. When a specific interdigitated electrode or LED lamp needs to be replaced or upgraded, other units will not be disturbed, thereby simplifying the maintenance process and reducing related costs and time, which overall brings convenience to the long-term operation and maintenance of the system.

[0045] Optionally, the power supply port includes a main power supply interface 7 and a secondary power supply interface 6, the main power supply interface 7 is used to connect to a power source, the secondary power supply interface 6 is connected to the positive pole of the main power supply interface 7, and the secondary power supply interface 6 draws power from the main power supply interface 7 and is used to power the interdigitated electrode group 41.

[0046] In this embodiment, the power supply port includes a main power supply interface and a secondary power supply interface, wherein the main power supply interface is used to connect to a power source, and the secondary power supply interface is connected to the main power supply interface, and draws power from the main power supply interface to supply power to the interdigital electrode group. The design of this power supply architecture brings about efficient integration and simplification of system power supply. The main power supply is directly connected through the main power supply interface, and the secondary power supply interface serves as a branch port to divert power from the main power supply port to the interdigital electrode group, thereby realizing the centralization and optimization of power management, which not only reduces the complexity of the circuit, improves the efficiency of power transmission, but also enhances the reliability of the system.

[0047] This reduces the number of connection points (each of which could be a point of failure), and also makes the circuit design more compact and organized, helping to save space and reduce the use of wires, thereby reducing costs and improving the overall aesthetics of the circuit.

[0048] Optionally, in the interdigital electrode group 41 , the second terminals 413 of each interdigital electrode 411 are electrically connected in sequence from left to right, and are finally connected to the secondary power supply interface 6 .

[0049] In this embodiment, the second terminal 413 of each interdigitated electrode 411 in the interdigitated electrode group 41 is connected in series from left to right, and finally forms a closed circuit with the secondary power supply interface 6. The linear continuous wiring method in this embodiment greatly reduces the number of wires required in the circuit design and optimizes the complexity of wiring: by reducing the number of wires to a minimum, the redundant paths in the circuit are reduced, thereby improving the overall reliability and electrical efficiency of the circuit.

[0050] In addition, this embodiment reduces potential poor contact points and reduces the electrical failures and unstable performance that may be caused by them: reducing the use of wires not only helps to reduce material costs and system weight, but also facilitates more efficient layout and assembly in a compact space, improves manufacturing and maintenance efficiency, and makes system design more economical and efficient.

[0051] Optionally, the second terminal 413 is connected to the secondary power supply interface 6 via a signal line, the first terminal 412 is connected to the LED light signal port via a signal line, and the LED light signal port is connected to the LED lights respectively.

[0052] In this embodiment, the second terminal 413 of the interdigitated electrode is connected to the secondary power supply interface 6 through a signal line, and the first terminal 412 is connected to the LED lamp signal port through a signal line. This connection method provides an efficient and stable electrical signal transmission path for the circuit, ensures accurate electrical signal distribution between the LED lamp and the interdigitated electrode, optimizes the overall performance of the circuit, reduces signal loss and interference, and enhances the response speed and reliability of the system.

[0053] Specifically, refer to Figure 1 The LED substrate is also equipped with three ports marked with yellow, white and blue respectively. These color-coded ports are used to distinguish the interdigital electrodes in each interdigital electrode group. The first terminal is connected to these color-coded ports through a signal line, and then connected to the corresponding LED lamp. This color-coded design greatly simplifies the inspection and maintenance process, allowing technicians to quickly distinguish each connection by color and quickly locate a specific circuit or fault point.

[0054] In addition, through direct connection, circuit design becomes more concise, reducing complexity and potential maintenance costs, while also improving assembly efficiency and overall system stability.

[0055] Optionally, the signal line is a copper wire.

[0056] In this embodiment, the copper wire has excellent electrical conductivity, which can effectively reduce the resistance and energy loss during signal transmission, thereby improving the transmission efficiency and stability of the signal. In addition, the flexibility and reliability of the copper material also make the circuit layout more flexible, easy to maintain and adjust, and suitable for various complex electronic equipment and environments.

[0057] Alternatively, aluminum wire can be used instead of copper wire as a signal line. Although the electrical conductivity of aluminum wire is slightly lower than that of copper wire, it has the advantages of lighter weight and lower cost, and is suitable for cost-sensitive or weight-sensitive application scenarios.

[0058] Preferably, silver wires may be used instead of copper wires as signal wires. Silver wires have higher electrical conductivity and oxidation resistance than copper, which helps to improve signal transmission quality.

[0059] Optionally, the LED lamp 311 is a red LED light emitting diode in a 0603 package.

[0060] In this embodiment, using a 0603-packaged red LED as the LED lamp 311 has significant advantages: the 0603 package is an extremely compact package, which makes the LED lamp group have a smaller volume and lower weight, and is suitable for compact design.

[0061] In addition, due to its low energy consumption and good visibility, red LED is suitable for application scenarios with low power consumption and the need for clear display of status indication, thus improving the energy efficiency of the device and user experience.

[0062] Optionally, pressure sensors 211 are further provided on the interdigital electrodes 411 , and every three pressure sensors 211 form a pressure sensor group 21 , and every three pressure sensor groups 21 form a pressure sensor array 2 .

[0063] In this embodiment, the interdigitated electrodes 411 not only serve as a medium for current transmission, but also integrate pressure sensors 211. Every three pressure sensors form a pressure sensor group 21, and every three pressure sensor groups further form a pressure sensor array 2. This design allows the pressure sensor to be tightly integrated with the interdigitated electrodes, providing a highly flexible and efficient way to monitor and control pressure changes in specific areas of the interdigitated electrodes: the integration of pressure sensors makes it possible to monitor the status and environmental response of each interdigitated electrode in real time, which is crucial to improving the responsiveness of the device and the accuracy of functional execution.

[0064] By integrating pressure sensors directly into the interdigital electrodes, the present system enables sophisticated control and feedback mechanisms, which is particularly important in applications that require precise control and regulation of pressure, such as in touch screen technology and other interface technologies that require fine manipulation feedback.

[0065] In addition, the integrated solution in this embodiment simplifies the structure of the overall device and reduces the need for additional sensor installation and wiring, which not only reduces the complexity of the system but also helps to reduce the weight and cost of the equipment.

[0066] At the same time, the array layout of the pressure sensors further enhances the functional diversity and applicability of the system, enabling pressure monitoring and analysis in a wider range of applications. For example, in mechanical pressure testing, human-machine interface, or any technical field that requires regional pressure monitoring, this configuration can provide a high degree of flexibility and scalability. The pressure sensor array allows independent pressure monitoring of different areas, which is critical for optimizing product performance and ensuring the accuracy of user operations.

[0067] In addition, the modular nature of this embodiment means that maintenance and upgrades are more convenient: when a sensor or electrode fails, the problematic unit can be quickly replaced without affecting the operation of the entire system, greatly improving the maintainability and reliability of the system. The modular design also facilitates future technology upgrades or functional expansions, providing strong flexibility for long-term development.

[0068] Specifically, the existing flexible wearable pressure sensor array has the following problems in resistance change testing:

[0069] 1. The flexibility of the detection system is limited and cannot be used in multiple scenarios;

[0070] 2. The display effect of the LED light array in the existing technical solution is not intuitive enough;

[0071] 3. The computer-assisted detection scheme is insufficient in stability and intuitiveness;

[0072] 4. The display effect of the 3x3 array is limited and cannot display the resistance change of the sensor performance alone.

[0073] In order to solve the above technical problems, the flexible circuit board of the utility model adopts a flexible printed circuit board (FPC) material, which has good flexibility and durability and can adapt to the curved surfaces of different parts of the human body.

[0074] The LED light board and the flexible acquisition board adopt a split design and are connected by wires, avoiding the limitation that the sensor and display module must be on the same substrate.

[0075] The LED light board is used to display the resistance changes of each pressure sensor in real time. Each sensor corresponds to an independent LED light, making the display more intuitive.

[0076] The flexible acquisition board and the LED light board are connected by silicone wire. The silicone wire has good flexibility and durability and can adapt to a variety of usage scenarios. At the same time, the use of silicone wire makes the entire system portable and can be moved and adjusted as needed to adapt to different detection environments.

[0077] The system can monitor the resistance changes of flexible wearable pressure sensors in real time and display them in real time through LED light boards to ensure the sensitivity and accuracy of detection. In addition, the system can effectively detect the performance of flexible wearable pressure sensors with similar structures and is suitable for the research and testing of various flexible sensors.

[0078] Specifically, refer to Figure 1 The system mainly consists of an FPC flexible circuit board 1 and an epoxy board (FR-4). A total of 9 3x3 interdigital electrodes with copper as the conductive material are arranged on the FPC flexible circuit board. These interdigital electrodes are used to collect the resistance change signal of the pressure sensor. There are 9 red LED light-emitting diodes mounted on the epoxy board (FR-4) to intuitively display the resistance change.

[0079] Specifically, refer to Figure 2 The FPC flexible circuit board uses flexible printed circuit board materials, which has good flexibility and durability and can adapt to the curved surfaces of different parts of the human body. The three interdigital electrodes in each row are connected at the right end by 0.5mm copper wire. There are 9 interdigital electrodes at the left end, and three groups of interdigital electrodes connected together at the right end, totaling 12 contact units. Each contact unit is soldered with a 26AWG silicone wire with tin.

[0080] Specifically, refer to Figure 3, 9 0603 packaged red LEDs are mounted on the epoxy board (FR-4), and each LED corresponds to a resistance change signal of a sensor. There are 4 1x3P pins with a welding pitch of 2.54mm, which are used to connect the FPC flexible circuit board and the epoxy board (FR-4). In addition, a 1x2P terminal with a pitch of 5.08mm is welded on the epoxy board (FR-4) to provide power to the test system.

[0081] When working, multiple pressure sensors located on the FPC flexible circuit board will detect the pressure applied to it and convert these pressures into changes in resistance. This change is transmitted to the epoxy board (FR-4) through the silicone wire. The epoxy board has good mechanical stability and electrical insulation, and is an ideal carrier material for electronic components such as LED light-emitting diodes. The resistance change signal transmitted to the epoxy board will affect the brightness of the corresponding LED light-emitting diode through further processing of the circuit.

[0082] The LED light adjusts its brightness as the pressure changes, reflecting different pressure levels. When the pressure felt by the sensor increases, the resistance decreases accordingly, allowing more current to flow through the LED, thereby increasing its brightness; when the pressure decreases, the resistance increases, and the current flowing through the LED decreases, causing its brightness to decrease. By observing the changes in the brightness of these LEDs, users can intuitively perceive the working status and detection results of each sensor.

[0083] The above is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A flexible wearable pressure sensor array assembly, characterized in that: The invention comprises a flexible circuit board (1), at least one interdigital electrode (411), at least one LED lamp (311) and an LED substrate (5), wherein the LED lamp (311) is located on the LED substrate (5), the interdigital electrode (411) is located on the flexible circuit board (1), the interdigital electrode (411) is used to collect a change signal of a pressure sensor (211), the interdigital electrode (411) further comprises a first terminal (412) and a second terminal (413), and the LED substrate (5) is further provided with a power supply port and an LED lamp signal port, the first terminal (412) is electrically connected to the LED lamp signal port, and the second terminal (413) is electrically connected to the power supply port; When in operation, the power supply port supplies power to the second terminal (413), and the current first flows through the interdigitated electrodes (411) and is transferred to the LED lamp signal port, and finally flows back to the power supply port after passing through the LED lamp.

2. A flexible wearable pressure sensor array assembly according to claim 1, characterized in that: The number of the interdigital electrodes (411) and the LED lamps (311) is 9, every three interdigital electrodes (411) form an interdigital electrode group (41), every three interdigital electrode groups (41) form an interdigital electrode array (4), every three LED lamps (311) form an LED lamp group (31), and every three LED lamp groups (31) form an LED lamp array (3).

3. A flexible wearable pressure sensor array assembly according to claim 2, characterized in that: The power supply port comprises a main power supply interface (7) and a secondary power supply interface (6), the main power supply interface (7) being used to connect to a power source, the secondary power supply interface (6) being connected to the positive pole of the main power supply interface (7), and the secondary power supply interface (6) taking power from the main power supply interface (7) and being used to supply power to the interdigital electrode group (41).

4. A flexible wearable pressure sensor array assembly according to claim 2, characterized in that: In the interdigital electrode group (41), the second terminal (413) of each interdigital electrode (411) is electrically connected in sequence from left to right, and is ultimately connected to the secondary power supply interface (6).

5. A flexible wearable pressure sensor array assembly according to claim 4, characterized in that: The second terminal (413) is connected to the secondary power supply interface (6) via a signal line, and the first terminal (412) is connected to the LED light signal port via a signal line; The LED light signal ports are respectively connected to the LED lights (311).

6. A flexible wearable pressure sensor array assembly according to claim 5, characterized in that: The signal wire is a copper wire.

7. A flexible wearable pressure sensor array assembly according to claim 3, characterized in that: The LED lamp (311) is a red LED light emitting diode in a 0603 package.

8. A flexible wearable pressure sensor array assembly according to claim 1, characterized in that: The interdigital electrodes (411) are also provided with pressure sensors (211), and every three pressure sensors (211) form a pressure sensor group (21), and every three pressure sensor groups (21) form a pressure sensor array (2).

9. A monitoring instrument, characterized in that: Comprising a flexible wearable pressure sensor array assembly as described in any one of claims 1 to 8.

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