Snore sensor

Abstract

The utility model relates to a snoring sensor, and belongs to the technical field of medical monitoring, the snoring sensor comprises a shell fixed on the neck skin of a human body, and a piezoelectric element and an elastic piece which are arranged on the shell, one side of the elastic piece abuts against the piezoelectric element, and the other side of the elastic piece abuts against the neck skin of the human body; the piezoelectric element is used for converting the vibration of the neck skin of the human body into an analog signal and outputting the analog signal. According to the snoring detection device, vibration of the neck skin of the human body is transmitted to the piezoelectric element through the elastic piece, the piezoelectric element generates voltage signals and transmits the voltage signals outwards for further processing and analysis, snoring detection is achieved, and the detection accuracy is high.

Description

Technical Field

[0001] This application relates to the field of medical monitoring technology, and in particular to a snoring sensor. Background Technology

[0002] Sleep apnea monitoring is a common method for diagnosing sleep apnea syndrome. Snoring is an important indicator in sleep apnea monitoring.

[0003] Snoring is usually caused by vibrations when airflow passes through the upper airway, producing sound. In current technology, snoring detection is often performed by collecting audio signals from the patient while sleeping and then processing and analyzing them.

[0004] However, in some cases, patients snore very softly, producing a very weak snoring sound that is difficult to capture and is easily affected by ambient noise, resulting in inaccurate detection. Utility Model Content

[0005] In view of this, it is necessary to provide a snoring sensor to solve the problems of sound signals being difficult to capture and easily affected by ambient noise in the existing technology, resulting in inaccurate detection.

[0006] To address the aforementioned problems, this application provides a snoring sensor, comprising:

[0007] A housing for fixing to the skin of a human neck, and a piezoelectric element and an elastic element disposed on the housing, wherein one side of the elastic element abuts against the piezoelectric element and the other side abuts against the skin of the human neck to transmit vibrations of the human neck skin to the piezoelectric element, and the piezoelectric element is used to convert the vibrations of the human neck skin into analog signal output.

[0008] In some possible implementations, medical pressure-sensitive tape is also fixed to the housing.

[0009] In some possible implementations, the housing has a cavity in the middle for accommodating the piezoelectric element, and the housing has a mounting hole communicating with the cavity. One side of the elastic element is used to abut against the skin of the human neck, and the other side passes through the mounting hole to abut against the piezoelectric element.

[0010] In some possible implementations, the housing includes a detachably connected top housing and a bottom housing, with the mounting hole provided on the top housing.

[0011] In some possible implementations, the bottom housing is provided with a retaining groove, and the piezoelectric element is disposed in the retaining groove.

[0012] In some possible implementations, the piezoelectric element includes a piezoelectric crystal, a signal processing circuit, and a signal transmission element, wherein the signal processing circuit includes a charge amplifier, a filter, and an amplifier;

[0013] The piezoelectric crystal is used to generate a piezoelectric crystal signal based on the vibration of the skin on the human neck.

[0014] The charge amplifier is used to amplify the piezoelectric crystal signal to obtain a charge-amplified signal.

[0015] The filter is used to filter the charge amplification signal to obtain a filtered signal;

[0016] The amplifier is used to amplify the filtered signal to obtain an analog signal;

[0017] The signal transmission element is used to output the analog signal to the outside.

[0018] In some possible implementations, the charge amplifier employs a CMOS operational amplifier as a pre-amplifier for signal conditioning.

[0019] In some possible implementations, the pass frequency of the filter is 50Hz to 650Hz.

[0020] In some possible implementations, the signal transmission element is a wire.

[0021] In some possible implementations, the elastic element is made of silicone.

[0022] The beneficial effects of this application are: When the snoring sensor provided by this application is in use, the neck skin vibrates when a person snores. The elastic element that abuts against the neck skin transmits the vibration of the neck skin to the piezoelectric element. The piezoelectric element generates a voltage signal and transmits it outward for further processing and analysis, thereby realizing snoring detection. Compared with audio signal detection, vibration information is easier to capture, less affected by ambient noise, and has higher detection accuracy. Attached Figure Description

[0023] Figure 1 A cross-sectional schematic diagram of the snoring sensor provided in this application;

[0024] Figure 2 A side view of the snoring sensor provided in this application;

[0025] Figure 3 A front view of the bottom housing provided in this application;

[0026] Figure 4 The sensor signal processing block diagram provided in this application;

[0027] Figure 5The processing circuit diagram provided in this application;

[0028] Figure 6 A schematic diagram of the snoring sensor worn in this application;

[0029] In the figure, 1-shell, 11-accommodating cavity, 12-top shell, 121-mounting hole, 13-bottom shell, 131-support groove, 2-elastic element, 3-piezoelectric element, 4-wire, 5-medical pressure-sensitive tape. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] It should be understood that the illustrative drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may be implemented out of order, and steps without logical contextual relationships may be reversed or performed simultaneously. Furthermore, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor systems and / or microcontroller systems.

[0032] The terms "first," "second," etc., used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a technical feature specified with "first" or "second" may explicitly or implicitly include at least one of those features. "And / or" describes the relationship between related objects, indicating that three relationships may exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] This application provides a snoring sensor, the structure of which is as follows: Figure 1 As shown, the device includes a housing 1, an elastic element 2, and a piezoelectric element 3. The housing 1 is a flat-bottomed, round cap-shaped structure used to fix itself to the skin of the human neck. A receiving cavity 11 for accommodating the piezoelectric element 3 is provided in the middle of the housing 1, and a mounting hole 121 communicating with the receiving cavity 11 is provided on the housing 1. The elastic element 2 is embedded in the housing 1 through the mounting hole 121. The elastic element 2 is made of soft silicone, with one side for abutting against the skin of the human neck, and the other side passing through the mounting hole 121 to tightly fit the piezoelectric element 3, so as to transmit the vibration of the human neck skin to the piezoelectric element 3. The piezoelectric element 3 is used to convert the vibration of the human neck skin into an analog signal output.

[0035] Compared to existing technologies, the snoring sensor of this application, when used, causes the neck skin to vibrate when a person snores. The elastic element 2, which is in contact with the neck skin, transmits the vibration to the piezoelectric element 3. The piezoelectric element 3 generates a voltage signal and transmits it outward for further processing and analysis, thereby realizing snoring detection. Compared to audio signal detection, vibration information is easier to capture, less affected by ambient noise, and has higher detection accuracy.

[0036] To facilitate sensor assembly and disassembly, in some embodiments, such as Figure 2 As shown, the housing 1 includes a detachably connected top housing 12 and a bottom housing 13, and the elastic element 2 is embedded in the top housing 1 through the mounting hole 121.

[0037] To improve the installation stability of piezoelectric components within the housing, in some embodiments, such as Figure 1 and Figure 3 As shown, the bottom housing 13 is provided with a retaining groove 131 for limiting the piezoelectric element 3, and the piezoelectric element 3 is placed in the receiving cavity 11 and the retaining groove 131.

[0038] To improve the quality of the output analog signal, in some embodiments, the piezoelectric element 3 includes a piezoelectric crystal, a signal processing circuit, and a signal transmission element; the piezoelectric crystal is used to generate a piezoelectric crystal signal based on the vibration of the skin on the human neck; the signal processing circuit includes a charge amplifier, a filter, and an amplifier, such as... Figure 4As shown, the charge amplifier is used to amplify the piezoelectric crystal signal to obtain a charge amplified signal, the filter is used to filter the charge amplified signal to obtain a filtered signal, the amplifier is used to amplify the filtered signal to obtain an analog signal, and the signal transmission element is used to output the analog signal to the outside, and the output analog signal can be acquired by a general analog-to-digital converter.

[0039] Furthermore, since the piezoelectric element 3 has a large output impedance, in order to improve signal quality, in some embodiments, such as Figure 5 As shown, the charge amplifier uses a CMOS operational amplifier with extremely high input impedance as the pre-stage signal conditioning stage.

[0040] Furthermore, since the vibration energy of snoring is mainly concentrated in the 100Hz~600Hz range, in order to improve detection accuracy, in some embodiments, such as... Figure 5 As shown, design the peripheral circuit for operational amplifier A in the high-pass filter circuit and set the high-pass cutoff frequency. Design the peripheral circuit for operational amplifier B in a low-pass filter circuit, and set the low-pass cutoff frequency. This allows the filter to pass frequencies of 50Hz to 650Hz.

[0041] Furthermore, in order to transmit signals more stably and reduce costs, in some embodiments, such as Figure 2 As shown, the signal transmission element is wire 4, which extends from the bottom of housing 1.

[0042] Finally, to make it easier to wear the sensor of this application, in some embodiments, such as Figure 6 As shown, a medical pressure-sensitive tape 5 is also attached to the sensor. When in use, the sensor is attached to the part of the neck where the vibration is most obvious with the medical pressure-sensitive tape 5 to collect snoring signals.

[0043] The above provides a detailed description of a snoring sensor provided in this application. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0044] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A snoring sensor, characterized in that, include: A housing for fixing to the skin of a human neck, and a piezoelectric element and an elastic element disposed on the housing, wherein one side of the elastic element abuts against the piezoelectric element and the other side abuts against the skin of the human neck to transmit vibrations of the human neck skin to the piezoelectric element, and the piezoelectric element is used to convert the vibrations of the human neck skin into analog signal output.

2. The snoring sensor according to claim 1, characterized in that, The shell is also fixed with medical pressure-sensitive tape.

3. The snoring sensor according to claim 1, characterized in that, The housing has a cavity in the middle for accommodating the piezoelectric element, and a mounting hole communicating with the cavity is provided on the housing. One side of the elastic element is used to abut against the skin of the human neck, and the other side passes through the mounting hole to abut against the piezoelectric element.

4. The snoring sensor according to claim 3, characterized in that, The housing includes a detachably connected top housing and a bottom housing, and the mounting hole is provided on the top housing.

5. The snoring sensor according to claim 4, characterized in that, The bottom housing is provided with a support groove, and the piezoelectric element is disposed in the support groove.

6. The snoring sensor according to claim 1, characterized in that, The piezoelectric element includes a piezoelectric crystal, a signal processing circuit, and a signal transmission element. The signal processing circuit includes a charge amplifier, a filter, and an amplifier. The piezoelectric crystal is used to generate a piezoelectric crystal signal based on the vibration of the skin on the human neck. The charge amplifier is used to amplify the piezoelectric crystal signal to obtain a charge-amplified signal. The filter is used to filter the charge amplification signal to obtain a filtered signal; The amplifier is used to amplify the filtered signal to obtain an analog signal; The signal transmission element is used to output the analog signal to the outside.

7. The snoring sensor according to claim 6, characterized in that, The charge amplifier uses a CMOS operational amplifier as the pre-stage signal conditioning stage.

8. The snoring sensor according to claim 6, characterized in that, The filter has a pass frequency of 50Hz to 650Hz.

9. The snoring sensor according to claim 6, characterized in that, The signal transmission element is a wire.

10. The snoring sensor according to claim 1, characterized in that, The elastic element is made of silicone.

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