Paper-based laser-induced graphene sensor equipment

Abstract

The paper-based laser-induced graphene sensor equipment comprises a sensing assembly, a control assembly and a display assembly, the sensing assembly comprises a temperature sensor and a skin swelling sensor, the temperature sensor and the skin swelling sensor are both attached to the skin of an affected part of a patient, and the control assembly comprises a controller and an acquisition module. The acquisition module is electrically connected with the controller, the temperature sensor and the skin swelling sensor are electrically connected with the acquisition module and used for converting temperature and swelling changes of an affected part of a patient into electric signals and transmitting the electric signals to the acquisition module, and the acquisition module generates corresponding pulse signals according to the acquired electric signals and transmits the pulse signals to the controller. The controller is further in communication connection with the display assembly and used for outputting a broken line graph of the temperature and the swelling degree of the affected part of the patient along with time on the display assembly according to changes of the pulse signals of the acquisition module. The equipment can be used for effectively monitoring skin swelling and temperature of the skin of a patient at a plaster applying position.

Description

Technical Field

[0001] This utility model belongs to the technical field of medical monitoring equipment, specifically relating to a paper-based laser-induced graphene sensor device. Background Technology

[0002] Currently, with patients wearing casts after wrist fractures, it's impossible to monitor the arm's recovery in real time. Because of the cast, traditional monitoring methods struggle to effectively track skin swelling and temperature changes, preventing doctors and caregivers from obtaining timely recovery data. This increases the risk of complications and extends recovery time.

[0003] In the existing technology, there are various devices for monitoring the recovery of patients with wrist fractures. However, when patients are in a cast, traditional detection methods are difficult to effectively monitor the recovery of the arm because the cast covers the arm, making it difficult for existing sensor devices to be directly attached to the skin for effective detection. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned deficiencies in the existing technology by providing a paper-based laser-induced graphene sensor device, which can effectively monitor skin swelling and temperature at the site of plaster cast application.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A paper-based laser-induced graphene sensor device is disclosed for monitoring skin parameters of patients with wrist fractures and requiring plaster casts. The device includes a sensing component, a control component, and a display component. The sensing component comprises a temperature sensor and a skin swelling sensor, both of which are attached to the patient's affected skin and located within the plaster cast. The control component includes a controller and a data acquisition module. The data acquisition module is electrically connected to the controller, and the temperature and skin swelling sensors are also electrically connected to the data acquisition module. These sensors convert changes in temperature and swelling at the patient's affected area into electrical signals, which are then transmitted to the data acquisition module. The data acquisition module generates corresponding pulse signals based on the acquired electrical signals and transmits these pulse signals to the controller. The controller is also communicatively connected to the display component, and outputs a line graph showing the changes in temperature and swelling of the patient's affected skin over time based on the changes in the pulse signals from the data acquisition module.

[0007] Preferably, both the temperature sensor and the skin swelling sensor include a contact layer at the bottom and a graphene sensing layer disposed on the contact layer. The contact layer is used to contact the patient's skin at the affected area, and the graphene sensing layer is mounted on the contact layer and connected to the control component via a wire.

[0008] Preferably, the connection between the wire and the graphene sensing layer is coated with silver paste to increase conductivity and signal transmission efficiency.

[0009] Preferably, the temperature sensor and the skin swelling sensor further include a conductive cloth, which is mounted on the graphene sensing layer and used to fix the wires connected to the graphene sensing layer.

[0010] Preferably, silver paste is coated between the conductive cloth and the graphene sensing layer.

[0011] Preferably, the contact layer is made of flexible Nomex paper, which is applied to the patient's skin at the affected area.

[0012] Preferably, the control component further includes a circuit board, on which the controller and the acquisition module are integrated.

[0013] Preferably, the circuit board is provided with a sensor input terminal, and the other end of the wire is connected to the sensor input terminal.

[0014] Preferably, the circuit board is provided with a first power input terminal and a second power input terminal, the first power input terminal is used to connect to the battery, and the second power input terminal is a USB interface.

[0015] Preferably, the display component is a visual webpage.

[0016] The paper-based laser-induced graphene sensor device of this invention can place the sensing component on the patient's skin under the plaster cast to monitor the temperature changes and swelling of the affected skin in real time. The temperature and swelling changes are transmitted to the control component, which then generates a line graph of temperature and swelling over time on the display component based on the received signal. This accurately reflects the temperature and swelling of the patient's affected skin, allowing doctors to understand the recovery of the arm. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the paper-based laser-induced graphene sensor device in Embodiment 1 of this utility model;

[0018] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0019] Figure 3 This is a schematic diagram of the structure of the temperature sensor or skin swelling sensor in Embodiment 1 of this utility model;

[0020] Figure 4 This is a front view of the circuit board in Embodiment 1 of this utility model;

[0021] Figure 5 This is a rear view of the circuit board in Embodiment 1 of this utility model;

[0022] Figure 6 This is a schematic diagram of the visual webpage in Embodiment 1 of this utility model.

[0023] In the diagram: 1-Sensing component, 2-Control component, 3-Visual webpage, 4-Nomex paper, 5-Graphene sensing layer, 6-Conductive cloth, 7-Wire, 8-Silver paste, 9-Controller, 10-Acquisition module, 11-USB2TTL module, 12-First power input terminal, 13-Second power input terminal, 14-Circuit board, 15-Sensor input terminal. Detailed Implementation

[0024] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "above" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] This invention provides a paper-based laser-induced graphene sensor device for monitoring skin parameters of patients with wrist fractures and casts. The device includes a sensing component, a control component, and a display component. The sensing component includes a temperature sensor and a skin swelling sensor, both of which are attached to the patient's affected skin and located inside the cast. The control component includes a controller and a data acquisition module. The data acquisition module is electrically connected to the controller, and the temperature and skin swelling sensors are also electrically connected to the data acquisition module. The data acquisition module converts changes in temperature and swelling at the patient's affected area into electrical signals, which are then transmitted to the data acquisition module. The data acquisition module generates corresponding pulse signals based on the acquired electrical signals and transmits these pulse signals to the controller. The controller is also communicatively connected to the display component, and outputs a line graph showing the changes in temperature and swelling at the patient's affected area over time based on the changes in the pulse signals from the data acquisition module.

[0029] Example 1

[0030] like Figure 1 , 2 As shown, this embodiment discloses a paper-based laser-induced graphene sensor device for monitoring skin parameters of patients with wrist fractures and plaster casts. It includes a sensing component 1, a control component 2, and a display component. The sensing component 1 includes a temperature sensor and a skin swelling sensor, both of which are attached to the patient's affected skin and located inside the plaster cast. The control component 2 includes a controller 9 and a data acquisition module 10. The data acquisition module 10 is electrically connected to the controller 9, and the temperature and skin swelling sensors are also electrically connected to the data acquisition module 10. These sensors convert changes in temperature and swelling at the patient's affected area into electrical signals, which are then transmitted to the data acquisition module 10. The data acquisition module 10 generates corresponding pulse signals based on the acquired electrical signals and transmits these pulse signals to the controller 9. The controller 9 is also communicatively connected to the display component, which outputs a line graph showing the changes in temperature and swelling at the patient's affected area over time based on the changes in the pulse signals from the data acquisition module 10. This allows doctors and nurses to easily view and analyze the patient's recovery progress.

[0031] In this embodiment, the controller 9 is an ESP32 and the acquisition module 10 is an NE555.

[0032] Specifically, the acquisition module 10 generates pulse signals of a specific frequency based on the resistance signal from the connected graphene sensor. The controller 9 acquires these pulse signals and uses pulse counting to determine the measured resistance signal by calculating the specific frequency of the oscillating output pulse signal. The controller 9 connects to the display device via the Wi-Fi signal of the Wi-Fi module and displays the changes in these resistance signals on the display device, thereby obtaining a line graph showing the changes in temperature and swelling of the patient's affected area over time.

[0033] like Figure 3 As shown, in this embodiment, the temperature sensor and the skin swelling sensor have the same structure. Both include a bottom contact layer and a graphene sensing layer 5 disposed on the contact layer. The contact layer is used to contact the patient's skin at the affected area. The graphene sensing layer 5 is mounted on the contact layer and is connected to the control component 2 via wires 7, thereby enabling sensitive sensing of minute deformations and temperature changes to transmit temperature signals and skin swelling signals to the acquisition module 10. Specifically, both ends of the graphene sensing layer 5 are connected to the control component via two wires 7. The material of the graphene sensing layer 5 is laser-induced graphene.

[0034] Specifically, the temperature sensor works by converting temperature changes into resistance changes, and then sending the resistance change signal to the acquisition module 10. The skin swelling sensor works by converting deformation into resistance changes, and then sending the resistance change signal to the acquisition module 10.

[0035] In addition, silver paste 8 is coated at the connection between the wire 7 and the graphene sensing layer 5 to increase the contact area between the wire 7 and the graphene sensing layer 5, thereby increasing conductivity and signal transmission efficiency.

[0036] Furthermore, the temperature sensor and skin swelling sensor also include a conductive cloth 6, which is mounted on the graphene sensing layer 5 and pressed against the connection between the wire 7 and the graphene sensing layer 5 to secure the wire 7 connected to the graphene sensing layer 5. Specifically, two pieces of conductive cloth 6 are provided, respectively mounted at both ends of the graphene sensing layer 5 where they connect to the wire 7, thereby securing the wires 7 on both sides. Furthermore, silver paste 8 is coated between the conductive cloth 6 and the graphene sensing layer 5 to further increase conductivity and signal transmission efficiency.

[0037] In this embodiment, the contact layer is made of flexible Nomex paper 4, which is applied to the patient's skin at the affected area. Nomex paper 4 is a flexible material with good flexibility and heat resistance, making it suitable for prolonged wear on the patient's arm or wrist, thus improving the patient's wearing comfort.

[0038] like Figure 4 , 5 As shown, the control component 2 also includes a circuit board 14, on which the controller 9 and the acquisition module 10 are integrated. Furthermore, a sensor input terminal 15 is provided on the circuit board 14, and the other end of the wire 7 is connected to the sensor input terminal 15, thereby connecting the graphene sensing layer 5 to the acquisition module 10.

[0039] like Figure 4As shown, the circuit board 14 further includes a first power input terminal 12 and a second power input terminal 13. The first power input terminal 12 is used to connect to a battery, and the second power input terminal 13 is a USB-Type-C interface. In other words, the circuit board 14 has two power supply methods: one is to power it by installing a battery at the first power input terminal 12, and the other is to power it via the USB-Type-C interface.

[0040] like Figure 4 As shown, the acquisition module 10, the USB-Type-C interface, the sensor input terminal 15, the first power input terminal 12, and the second power input terminal 13 are all located on the front of the circuit board 14. In addition, a USB2TTL module 11 for data transmission is also provided on the front of the circuit board 14.

[0041] like Figure 5 As shown, the controller 9 is located on the back of the circuit board 14.

[0042] like Figure 6 As shown, in this embodiment, the display component uses a visual webpage 3. The visual webpage 3 is used to output a line graph showing the changes in temperature / skin swelling at the patient's affected area over time in real time, so that doctors and caregivers can view and analyze the patient's recovery.

[0043] The usage process of the paper-based laser-induced graphene sensor device in this embodiment is as follows:

[0044] The temperature sensor and skin swelling sensor of the paper-based laser-induced graphene sensor device are installed on the patient's skin and located under the plaster cast on the patient's arm;

[0045] The acquisition module 10 acquires data from the temperature sensor and the skin swelling sensor, and generates a pulse signal of a specific frequency based on their resistance signals.

[0046] The controller 9 receives the pulse signal from the acquisition module 10 and uses the pulse counting method to determine the measured resistance signal by calculating the pulse signal of a specific frequency of the oscillation output;

[0047] The controller 9 connects to the display device via the Wi-Fi signal of the Wi-Fi module and displays the changes in these resistance signals on the display device, thereby obtaining a line graph showing the changes in the temperature and swelling of the patient's affected area over time.

[0048] The paper-based laser-induced graphene sensor device in this embodiment can place the sensing component 1 on the patient's skin under the cast to monitor the temperature changes and swelling of the affected skin in real time. This data is then transmitted to the control component 2. Based on the received signals, the control component 2 generates a line graph showing the temperature and swelling changes over time on the display component, accurately reflecting the temperature and swelling of the patient's affected skin, allowing doctors to understand the recovery progress of the arm injury. Furthermore, the device is wearable on the wrist, making it convenient to carry and capable of detecting swelling and temperature changes under the cast, fully meeting the needs of medical monitoring. The integrated controller 9 and acquisition module 10 accurately collect and transmit data, which is displayed in real time on a visual webpage 3, helping doctors and nurses to promptly grasp the patient's recovery status and improving the accuracy and efficiency of monitoring.

[0049] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A paper-based laser-induced graphene sensor device for monitoring skin parameters of patients with wrist fractures and casts, characterized in that, It includes a sensing component (1), a control component (2), and a display component. The sensing component (1) includes a temperature sensor and a skin swelling sensor, both of which are attached to the patient's affected skin and located inside the plaster cast. The control component (2) includes a controller (9) and a data acquisition module (10), wherein the data acquisition module (10) is electrically connected to the controller (9). The temperature sensor and the skin swelling sensor are electrically connected to the acquisition module (10) to convert the temperature and swelling changes of the patient's affected area into electrical signals and transmit them to the acquisition module (10). The acquisition module (10) generates corresponding pulse signals based on the acquired electrical signals and transmits the pulse signals to the controller (9). The controller (9) is also communicatively connected to the display component and is used to output a line graph on the display component showing the changes in temperature and swelling of the patient's affected skin over time, based on the changes in the pulse signal of the acquisition module (10).

2. The paper-based laser-induced graphene sensor device according to claim 1, characterized in that, Both the temperature sensor and the skin swelling sensor include a contact layer at the bottom and a graphene sensing layer (5) disposed on the contact layer. The contact layer is used to contact the patient's skin at the affected area. The graphene sensing layer (5) is mounted on the contact layer and is connected to the control component (2) via a wire (7).

3. The paper-based laser-induced graphene sensor device according to claim 2, characterized in that, The connection between the wire (7) and the graphene sensing layer (5) is coated with silver paste (8) to increase conductivity and signal transmission efficiency.

4. The paper-based laser-induced graphene sensor device according to claim 3, characterized in that, The temperature sensor and the skin swelling sensor also include a conductive cloth (6), which is mounted on the graphene sensing layer (5) and is used to fix the wires (7) connected to the graphene sensing layer (5).

5. The paper-based laser-induced graphene sensor device according to claim 4, characterized in that, Silver paste (8) is coated between the conductive cloth (6) and the graphene sensing layer (5).

6. The paper-based laser-induced graphene sensor device according to claim 2, characterized in that, The contact layer is made of flexible Nomex paper (4), which is applied to the patient's skin at the affected area.

7. The paper-based laser-induced graphene sensor device according to claim 2, characterized in that, The control component (2) also includes a circuit board (14), on which the controller (9) and the acquisition module (10) are integrated.

8. The paper-based laser-induced graphene sensor device according to claim 7, characterized in that, The circuit board (14) is provided with a sensor input terminal (15), and the other end of the wire (7) is connected to the sensor input terminal (15).

9. The paper-based laser-induced graphene sensor device according to claim 8, characterized in that, The circuit board (14) is provided with a first power input terminal (12) and a second power input terminal (13). The first power input terminal (12) is used to connect to the battery, and the second power input terminal (13) is a USB interface.

10. The paper-based laser-induced graphene sensor device according to any one of claims 1-9, characterized in that, The display component uses a visual webpage (3).

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