Vital sign detection device and cushion

Abstract

The utility model discloses a vital sign detection device and a cushion, and belongs to the technical field of signal processing. The device comprises a first contact layer, a sensing optical fiber layer and a second contact layer which are stacked in sequence. The first contact layer and the second contact layer are both used for protecting the sensing optical fiber layer, a first optical fiber sensor is arranged on the sensing optical fiber layer, and the first optical fiber sensor is an optical phase modulation type optical fiber sensor. When a user sits or lies on the device, a vibration signal of the body of the user causes a phase change of light transmitted in the optical fiber, in which case the sensor acquires a first section of light signal, the first section of light signal being used to characterize a light phase change, the light phase change being used to detect a vital sign of a first user to detect a health condition of the first user. The optical phase modulation type optical fiber sensor has the characteristic of high sensitivity, so that the health detection performance of the cushion provided by the utility model is better and more accurate.

Description

Technical Field

[0001] The present application relates to the field of signal processing technology, and in particular to a vital sign detection device and a mat. Background Art

[0002] As people's living standards improve, they pay more and more attention to health detection, and vital sign detection devices come into being. Vital sign detection devices are used to detect various vital signs of the human body, such as heart rate, breathing, blood pressure, etc., and determine the health status of the human body through various vital signs. In order to provide people with convenient detection, vital sign detection devices are set in some daily necessities, so that these daily necessities have the function of health detection. For example, a mat, on which a micro-bend optical fiber sensor based on light intensity is set. When the user sits or lies on the mat, the vibration signal of the user's body causes the optical fiber to bend slightly, which in turn causes the light intensity transmitted in the optical fiber to change. In this case, the sensor detects the vital signs of the human body by measuring the change in light intensity. However, the micro-bend optical fiber sensor based on light intensity has low sensitivity and low signal separation accuracy. Utility Model Content

[0003] The present application provides a vital sign detection device and a mat to solve the problems provided by the related technologies. The technical solutions are as follows:

[0004] In a first aspect, a vital sign detection device is provided, the vital sign detection device comprising: a first contact layer, a sensing optical fiber layer, and a second contact layer stacked in sequence; the first contact layer and the second contact layer are both used to protect the sensing optical fiber layer. A first optical fiber sensor is arranged on the sensing optical fiber layer, the first optical fiber sensor is an optical phase modulation optical fiber sensor, the first optical fiber sensor is used to collect a first segment of optical signal, and the first segment of optical signal is used to detect the vital sign of a first user. In the present application, a first optical fiber sensor is arranged on the sensing optical fiber layer, and the first optical fiber sensor is an optical phase modulation optical fiber sensor. When a user sits or lies on the vital sign detection device, the vibration signal of the user's body causes the phase change of the light transmitted in the optical fiber. In this case, the sensor collects a first segment of optical signal, and the first segment of optical signal is used to characterize the optical phase change, and the optical phase change is used to detect the vital sign of the first user, so as to detect the health status of the first user. Since the optical phase modulation optical fiber sensor has the characteristics of high sensitivity, the health detection performance of the vital sign detection device provided by the present application is better and more accurate.

[0005] In a possible implementation, a second optical fiber sensor is further arranged on the sensing optical fiber layer, the second optical fiber sensor is an optical phase modulation optical fiber sensor, and the second optical fiber sensor is used to collect a second segment of optical signal, and the second segment of optical signal is used to detect the vital signs of a second user, and the second user is different from the first user. In the present application, by arranging the second optical fiber sensor on the sensing optical fiber layer, multi-person health detection can be achieved, and the applicability and practicality of the vital signs detection device can be improved.

[0006] In a possible implementation, the vital sign detection device further includes: a detection device, the detection device includes a signal conversion module and a processing module, the signal conversion module is electrically connected to the first optical fiber sensor, the second optical fiber sensor and the processing module respectively; wherein the signal conversion module is used to convert the combined signal of the first optical signal and the second optical signal into a first electrical signal; the processing module is used to determine the signal mutation point of the first electrical signal as a segmentation point to segment the first electrical signal into a first sub-electrical signal corresponding to the first optical signal and a second sub-electrical signal corresponding to the second optical signal, and determine the vital sign of the first user according to the first sub-electrical signal, and determine the vital sign of the second user according to the second sub-electrical signal. Wherein, the detection device can be fixedly arranged on the side wall of the vital sign detection device. Alternatively, the detection device can also be detachable from the vital sign detection device. For example, the detection device can be electrically connected to the first optical fiber sensor and the second optical fiber sensor respectively through two optical fiber interfaces (lucent connector, LC) interfaces, so that the first optical fiber sensor and the second optical fiber sensor can be detachably connected to the detection device, which is convenient for replacing the vital sign detection device or the detection device.

[0007] In a possible implementation, the detection device further includes: a switching switch, which is electrically connected to the first optical fiber sensor, the second optical fiber sensor and the signal conversion module respectively. The switching frequency of the switching switch may include multiple frequencies, such as a first frequency, a second frequency and a third frequency. The third frequency is greater than the second frequency, and the second frequency is greater than the first frequency. Example 1: The switching switch switches between the first optical fiber sensor and the second optical fiber sensor at the first frequency, at which time the first optical fiber sensor collects the first segment of the optical signal or the second optical fiber sensor collects the second segment of the optical signal. At this time, the vital sign detection device is in a single-channel detection mode to perform health detection on a single person. Example 2: The switching switch switches between the first optical fiber sensor and the second optical fiber sensor at the second frequency, at which time, in the first time period, the first optical fiber sensor collects the first segment of the optical signal; in the second time period, the second optical fiber sensor collects the second segment of the optical signal, and the second time period is adjacent to the first time period. At this time, the vital sign detection device is in a rotation detection mode to perform health detection between two people in turn. Example 3: The switching switch switches between the first optical fiber sensor and the second optical fiber sensor at the third frequency, the first optical fiber sensor collects the first segment of the optical signal, and at the same time the second optical fiber sensor collects the second segment of the optical signal. At this time, the vital sign detection device is in a parallel detection mode, thereby achieving the purpose of realizing multiple detection modes.

[0008] In a possible implementation, the signal conversion module includes: a coherent detection module, electrically connected to the first optical fiber sensor and the second optical fiber sensor; an analog-to-digital conversion module, electrically connected to the coherent detection module and the processing module. In the present application, the optical signal is converted into an electrical signal by setting a coherent detection module, and then the electrical signal is converted into a digital signal by setting an analog-to-digital conversion module. The processor determines the moment when the instantaneous frequency in the digital signal is greater than a threshold as a split point, and then splits the first electrical signal. The logic is simple, no complex hardware support is required, and the cost is low.

[0009] In a possible implementation, the vital sign detection device further includes: an anti-noise layer, which is stacked between the sensing optical fiber layer and the second contact layer. In the present application, the anti-noise layer can effectively resist noise, so that the optical signal collected by the optical fiber sensor is more accurate.

[0010] In a possible implementation, the material of the noise-proof layer is an acrylic plate. In the present application, by using the acrylic plate as the noise-proof layer, noise can be effectively resisted and the optical fiber sensor can be prevented from breaking, thereby effectively protecting the optical fiber sensor.

[0011] In a possible implementation, the vital sign detection device further includes: a latex layer, which is stacked between the sensing optical fiber layer and the first contact layer. Since the latex layer can make the vital sign detection device softer, the comfort of the vital sign detection device can be effectively improved.

[0012] In a possible implementation, the vital sign detection device further includes: a first conductive layer and a second conductive layer, wherein the first conductive layer and the second conductive layer are respectively stacked on both sides of the sensing optical fiber layer and in contact with two surfaces of the sensing optical fiber layer. In the present application, by providing the first conductive layer and the second conductive layer, the vibration signal of the user's body can be transmitted to the sensing optical fiber layer with no loss or little loss, thereby effectively improving the collection effect of the signal for detecting vital signs.

[0013] In a possible implementation, the first conductive layer and the second conductive layer are both silicone layers, and the material of the silicone layer is silicone with a hardness of eight degrees. In the present application, the first conductive layer and the second conductive layer are both made of silicone with a hardness of eight degrees, which can better conduct mechanical conduction, so that the vibration signal of the user's body can be transmitted to the sensing optical fiber layer without loss or with little loss, effectively improving the collection of signals for detecting vital signs.

[0014] In a possible implementation, the first contact layer and the second contact layer are both leather layers. In the present application, since leather has good skin affinity, the materials of the first contact layer and the second contact layer are both leather, which can effectively improve the user experience.

[0015] In a second aspect, a mat is provided, which adopts the device in the above-mentioned first aspect or any possible implementation manner of the first aspect.

[0016] It should be understood that the beneficial effects achieved by the technical solution of the second aspect of the present application and the corresponding possible implementation methods can be referred to the above-mentioned technical effects of the first aspect and its corresponding possible implementation methods, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a vital sign detection device provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the structure of a mat provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the structure of another mat provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the structure of another mat provided in an embodiment of the present application;

[0021] Figure 5 A schematic diagram of the structure of another mat provided in an embodiment of the present application;

[0022] Figure 6 A schematic diagram of the structure of another mat provided in an embodiment of the present application;

[0023] Figure 7 This is a schematic structural diagram of another cushion provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0025] As people's living standards improve, some daily necessities have the function of health detection. That is, these daily necessities can detect various vital signs of the human body (such as heart rate, breathing, blood pressure, etc.) to detect people's health status. In a related technology, taking a daily necessity as a mat as an example, a micro-bend optical fiber sensor based on light intensity is set on the mat. When the user sits or lies on the mat, the vibration signal of the user's body causes the optical fiber to bend slightly, which in turn causes the light intensity transmitted in the optical fiber to change. In this case, the sensor detects the vital signs of the human body by detecting the change in light intensity. However, the micro-bend optical fiber sensor with basic light intensity has low sensitivity and low signal separation accuracy.

[0026] In order to solve the above technical problems, the present application provides a vital sign detection device, such as Figure 1 As shown, the device 100 may include a sensing fiber layer 110 and two contact layers 120, which are stacked on opposite sides of the sensing fiber layer 110 to protect the sensing fiber layer 110. An optical phase modulation type optical fiber sensor 111 is arranged on the sensing fiber layer 110. When the sensing fiber layer 110 is pressed by the user, the phase of the light transmitted in the optical fiber changes. At this time, the optical phase modulation type optical fiber sensor 111 collects optical signals, which can detect the user's vital signs and further detect the user's health status. In the embodiment of the present application, the vital signs detection device utilizes the high sensitivity of the optical phase modulation optical fiber sensor, which can accurately detect the user's vital signs with high accuracy.

[0027] The above-mentioned vital sign detection device may be, but is not limited to, a cushion, and the cushion may include a seat cushion or a mattress. The following takes the vital sign detection device as an example to describe the vital sign detection device in detail. Figure 2 A schematic diagram of the structure of a cushion provided in an embodiment of the present application is shown in FIG. Figure 2As shown, the mat 10 may include a first contact layer 1, a sensing optical fiber layer 2, and a second contact layer 3 which are stacked in sequence. A first optical fiber sensor 21 is arranged on the sensing optical fiber layer 2, and the first optical fiber sensor 21 is an optical phase modulation optical fiber sensor. When a user sits or lies on the mat, the vibration signal of the user's body causes the phase change of the light transmitted in the optical fiber. In this case, the sensor collects a first segment of optical signal, which is used to characterize the optical phase change. The optical phase change is used to detect the vital signs of the first user to detect the health status of the first user. Since the optical phase modulation optical fiber sensor has the characteristics of high sensitivity, the health detection performance of the mat provided in the present application is better and more accurate.

[0028] In one example, the materials of the first contact layer and the second contact layer can be different or the same. For example, the material of the first contact layer can be technical cloth, and the material of the second contact layer can be leather. Alternatively, the materials of the first contact layer and the second contact layer can both be leather. In the embodiment of the present application, since leather has good skin affinity, the materials of the first contact layer and the second contact layer are both leather, which can effectively improve the user experience.

[0029] Of course, the mat in the embodiment of the present application is not limited to the detection of the user's health status, and can also warn the user of possible disease risks. Exemplarily, the optical signals continuously collected by the first optical fiber sensor can determine that the systolic blood pressure of the first user is higher than 180mmHg, which can warn the first user that there may be an increased risk of stroke, heart disease and chronic kidney disease. Exemplarily, the optical signals continuously collected by the first optical fiber sensor can determine that the resting heart rate of the first user is greater than 80 times / minute, which can warn the first user that there may be a risk of cardiovascular and cerebrovascular diseases. Alternatively, targeted improvement suggestions can also be given to the user. Exemplarily, the optical signals collected by the first optical fiber sensor can determine that the systolic blood pressure of the first user is higher than 130mmHg, which can remind the first user to prevent hypertension, and it is recommended to do aerobic exercise and eat foods that improve the elasticity of blood vessels. For example, aerobic exercise can include gentle walking, walking, shaking hands, Tai Chi, etc.; the above-mentioned food can include foods containing brass substances, proteins, vitamins, minerals and fatty acids.

[0030] In some embodiments, Figure 3 A schematic diagram of the structure of another cushion provided in an embodiment of the present application is shown in FIG. Figure 3As shown, the above-mentioned mat 10 may also include a detection device 4, and the detection device 4 may include a signal conversion module 40 and a processing module 41. The signal conversion module 40 is electrically connected to the first optical fiber sensor 21, the second optical fiber sensor 22 and the processing module 41 respectively. Among them, the signal conversion module 40 is used to convert the first segment of optical signal into a first segment of electrical signal. Exemplarily, the signal conversion module 40 may include a coherent detection module 42 and an analog-to-digital conversion module 43, and the coherent detection module 42 is electrically connected to the first optical fiber sensor and the analog-to-digital conversion module 43. The coherent detection module 42 is used to convert the optical signal into an electrical signal, which may be a voltage signal or a current signal. That is, the coherent detection module 42 converts the first segment of optical signal into an electrical signal 1. The analog-to-digital conversion module 43 is used to convert the above electrical signal into a digital signal. That is, the analog-to-digital conversion module 43 converts the electrical signal 1 into a first segment of electrical signal, and the first segment of electrical signal is a digital signal. The processing module 41 is used to determine the vital signs of the first user according to the first segment of electrical signal to detect the health status of the first user. Among them, the detection device can be fixedly arranged on the mat. In one example, the detection device can be fixedly mounted on the side wall of the mat. Alternatively, the detection device can also be detachable from the mat. In one example, the detection device can be electrically connected to the first optical fiber sensor via a lucent connector (LC) interface, so that the first optical fiber sensor and the detection device can be detachably connected, which is convenient for replacing the mat or the detection device. Exemplarily, the optical fiber interface can be an LC type interface.

[0031] Of course, the above-mentioned mat is not limited to one optical fiber sensor, that is, the above-mentioned mat is not limited to detecting the health status of one user, but can also detect the health status of multiple users. In an embodiment of the present application, taking two users (such as the first user and the second user) as an example, the above-mentioned mat can also include a second optical fiber sensor, and a second optical fiber sensor is also arranged on the sensing optical fiber layer. The second optical fiber sensor is an optical phase modulation optical fiber sensor, and the second optical fiber sensor is used to collect a second segment of light signal, and the second segment of light signal is used to detect the vital signs of the second user, who is different from the first user. Exemplarily, the sensing optical fiber layer can be divided into two plane areas, and the two plane areas include a first plane area and a second plane area. The first optical fiber sensor is laid in the first plane area, and the second optical fiber sensor is laid in the second plane area. In an embodiment of the present application, by arranging the second optical fiber sensor on the sensing optical fiber layer, multi-person health detection can be achieved, thereby improving the applicability and practicality of the mat.

[0032] Accordingly, the difference between multi-person health detection and single-person health detection is that the signal conversion module in the detection device included in the above-mentioned mat is used to convert the combined signal of the first segment light signal and the second segment light signal into a first electrical signal. And, the processing module in the detection device is used to determine the signal mutation point of the first electrical signal as the segmentation point to split the first electrical signal into a first sub-electrical signal corresponding to the first segment light signal and a second sub-electrical signal corresponding to the second segment light signal, and determine the vital signs of the first user according to the first sub-electrical signal, and determine the vital signs of the second user according to the second sub-electrical signal. In one example, Figure 3 A structural diagram of another cushion provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the detection device 4 can be electrically connected to the first optical fiber sensor and the second optical fiber sensor respectively through two LC type interfaces 5, so that the first optical fiber sensor and the second optical fiber sensor can be detachably connected to the detection device, which is convenient for replacing the mat or the detection device.

[0033] Exemplarily, the signal mutation point may include a moment corresponding to an instantaneous frequency, where the instantaneous frequency is a frequency greater than a first threshold value in the first electrical signal. That is, the processing module may determine all instantaneous frequencies in the first electrical signal, and determine the moments corresponding to these instantaneous frequencies, and divide the first electrical signal using these moments as segmentation points. For example, the first electrical signal includes instantaneous frequency 1 and instantaneous frequency 2, and both instantaneous frequency 1 and instantaneous frequency 2 are frequencies greater than the first threshold value, then the processing module may determine moment 1 corresponding to instantaneous frequency 1 and moment 2 corresponding to the instantaneous frequency. The processing module divides the first electrical signal using moment 1 and moment 2 as segmentation points. Then, the electrical signal corresponding to the start moment-moment 1 is divided into a first segment electrical signal, the electrical signal corresponding to moment 1-moment 2 is divided into a second segment electrical signal, and the electrical signal corresponding to moment 2-end moment is divided into a first segment electrical signal. Afterwards, the processing module may splice multiple first segment electrical signals to obtain a first sub-electrical signal, and splice multiple second segment electrical signals to obtain a second sub-electrical signal. In the embodiment of the present application, the detection device can split the collected optical signals of different users and their corresponding electrical signals, and then accurately distinguish the vital signs of multiple users, so that the health detection of multiple users is accurate, simple in structure, and easy to implement.

[0034] In order to realize multiple detection modes, Figure 4 A schematic diagram of the structure of another cushion provided in an embodiment of the present application is shown in FIG. Figure 4As shown, the detection device may further include a switch 44. The switch 44 is electrically connected to the first optical fiber sensor and the second optical fiber sensor on the sensing optical fiber layer 2, respectively, and the switch 44 is electrically connected to the signal conversion module 40. The switching frequency of the switch may include multiple frequencies, such as a first frequency, a second frequency, and a third frequency. The third frequency is greater than the second frequency, and the second frequency is greater than the first frequency. Example 1, the first frequency is 0 Hz, and the switch switches between the first optical fiber sensor and the second optical fiber sensor at the first frequency. At this time, the first optical fiber sensor collects the first segment of light signal or the second optical fiber sensor collects the second segment of light signal. At this time, the mat is in a single-channel detection mode to perform health detection on a single person. Example 2, the switch switches between the first optical fiber sensor and the second optical fiber sensor at the second frequency. At this time, in the first time period, the first optical fiber sensor collects the first segment of light signal; in the second time period, the second optical fiber sensor collects the second segment of light signal, and the second time period is adjacent to the first time period. For example, the second frequency is less than 0.2 / number of optical fiber sensors Hz, that is, 0.1 Hz. The first time period is 9:00-9:01, and the second time period is 9:02-9:03. Then, at 9:00-9:01, the switch is switched to the first state, that is, the first optical fiber sensor collects the first segment of the light signal; at 9:02-9:03, the switch is switched to the second state, that is, the second optical fiber sensor collects the second segment of the light signal. By analogy, the mat is in a rotation detection mode to perform health detection in turns between two people. Example 3, the third frequency is greater than 15*the number of optical fiber sensors Hz, that is, 30Hz. The switch switches between the first optical fiber sensor and the second optical fiber sensor at the third frequency, and the first optical fiber sensor collects the first segment of the light signal, while the second optical fiber sensor collects the second segment of the light signal. At this time, the mat is in parallel detection mode.

[0035] In order to prevent interference with the optical signal collected by the optical fiber sensor, Figure 5 A schematic diagram of the structure of another cushion provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the mat 10 provided in the embodiment of the present application may include a noise-proof layer 6. The noise-proof layer 6 is stacked between the sensing optical fiber layer 2 and the second contact layer 3. Exemplarily, the material of the noise-proof layer may be plastic (ethylene vinylacetate, EVA), and EVA is ethylene-vinyl acetate copolymer (also known as ethylene-vinyl acetate copolymer), which is made by copolymerization of ethylene (E) and vinyl acetate (VA). Exemplarily, the material of the noise-proof layer may be an acrylic plate, which is also called specially treated organic glass. In the embodiment of the present application, by setting the noise-proof layer, noise can be effectively resisted, so that the optical signal collected by the optical fiber sensor is more accurate. Among them, by using an acrylic plate as the noise-proof layer, noise can be effectively resisted, and the optical fiber sensor can be prevented from breaking, thereby effectively protecting the optical fiber sensor.

[0036] In order to improve the comfort of the mat and enhance the user experience, Figure 6 A schematic diagram of the structure of another cushion provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, the cushion 10 provided in the embodiment of the present application may include a latex layer 7. The latex layer 7 is stacked between the sensing optical fiber layer 2 and the first contact layer 1. Since the latex layer can make the cushion softer, the comfort of the cushion can be effectively improved.

[0037] In order to make the optical signal collected by the fiber optic sensor more accurate, Figure 7 A schematic diagram of the structure of another cushion provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, the mat 10 provided in the embodiment of the present application may also include a first conductive layer 8 and a second conductive layer 9, which are respectively stacked on both sides of the sensing optical fiber layer 2 and in contact with two surfaces of the sensing optical fiber layer 2. The first conductive layer 8 is used to transmit the user's vibration signal to the sensing optical fiber layer without loss or with little loss, so that the optical fiber sensor on the sensing optical fiber layer can collect the optical signal without loss or with little loss. Similarly, the second conductive layer 9 is also used to transmit the user's vibration signal to the sensing optical fiber layer without loss or with little loss. In the embodiment of the present application, by providing the first conductive layer and the second conductive layer, the vibration signal of the user's body can be transmitted to the sensing optical fiber layer without loss / with little loss, effectively improving the collection effect of the signal for detecting vital signs.

[0038] Exemplarily, the first conductive layer and the second conductive layer may be the same or different. For example, the first conductive layer and the second conductive layer may both be silicone layers. In one example, the material of the silicone layer may be silicone with a hardness of eight degrees. In the embodiment of the present application, the first conductive layer and the second conductive layer are both made of silicone with a hardness of eight degrees, which can better conduct mechanical conduction, so that the vibration signal of the user's body can be transmitted to the sensing optical fiber layer without loss / with little loss, effectively improving the collection of signals for detecting vital signs.

[0039] Figure 2-Figure 7 The mat shown can be applied to the following scenarios: Scenario 1, hospital. Figure 2-Figure 7 The mat shown is used as a detection instrument to detect the vital signs of patients in one or more beds in the hospital, and then detect the health status of one or more patients. Scenario 2, vehicle. In one example, Figure 2-Figure 7 The cushions shown may be seat cushions in a car, such as a driver's seat cushion, a co-driver's seat cushion, and a rear seat cushion. Figure 2-Figure 7 The detection device 4 in the mat shown is arranged on the vehicle controller of the vehicle. Figure 3-Figure 7The first optical fiber sensor and the second optical fiber sensor in the mat shown, and the layers are arranged on the seat cushion in the car. In this way, the mat can detect the vital signs of multiple users sitting in the car, and then detect the health status of multiple users. Scene 3, bedding. Figure 3-Figure 7 The cushion shown is on a mattress (such as a double mattress). When two people are lying on the bed, the vital signs of the two people can be detected at the same time, and then the health status of multiple people can be detected. Of course, the cushion provided in the embodiment of the present application is not limited to the above-mentioned scenes, and can also include other scenes, such as a sofa. The health detection device can be set on a sofa for multiple people. When multiple people are sitting on the sofa, the vital signs of these people can be detected at the same time, and then the health status of these people can be detected. Therefore, they are not listed one by one in the embodiment of the present application.

[0040] It should be understood that the above Figure 3 and Figure 7 The detection device 4 shown in the figure is only illustrated by the division of the above-mentioned functional modules when realizing its functions. In practical applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0041] In the present application, the terms "first", "second", etc. are used to distinguish between identical or similar items having substantially the same effects and functions. It should be understood that there is no logical or temporal dependency between "first", "second", and "nth", nor is there a limitation on quantity and execution order. It should also be understood that although the following description uses the terms first, second, etc. to describe various elements, these elements should not be limited by the terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of the various described examples, a first image may be referred to as a second image, and similarly, a second image may be referred to as a first image. Both the first image and the second image may be images, and in some cases, may be separate and different images.

[0042] It should also be understood that in the various embodiments of the present application, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0043] The term "at least one" in this application means one or more, and the term "multiple" in this application means two or more, for example, multiple second messages means two or more second messages. The terms "system" and "network" are often used interchangeably herein.

[0044] It should be understood that the terms used in the description of the various examples herein are only for describing specific examples and are not intended to be limiting. As used in the description of the various examples and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0045] It should also be understood that the term "and / or" used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. The term "and / or" is a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0046] It should also be understood that the term “comprise” (also known as “includes,” “including,” “comprises” and / or “comprising”) when used in this specification specifies the presence of stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0047] It should also be understood that the terms "if" and "if" may be interpreted to mean "when" or "upon" or "in response to determining" or "in response to detecting." Similarly, the phrases "if it is determined that ..." or "if [a stated condition or event] is detected" may be interpreted to mean "upon determining that ..." or "in response to determining that ..." or "upon detecting [a stated condition or event]" or "in response to detecting [a stated condition or event]," depending on the context.

[0048] It should be understood that determining B based on A does not mean determining B only based on A. B can also be determined based on A and / or other information.

[0049] It should also be understood that the references to "one embodiment", "an embodiment", or "a possible implementation" throughout the specification mean that specific features, structures, or characteristics related to the embodiment or implementation are included in at least one embodiment of the present application. Therefore, the references to "in one embodiment" or "in an embodiment", or "a possible implementation" throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Claims

1. A vital sign detection device, characterized in that: The device comprises: a first contact layer (1), a sensing optical fiber layer (2) and a second contact layer (3) which are stacked in sequence, wherein the first contact layer (1) and the second contact layer (3) are both used to protect the sensing optical fiber layer (2); A first optical fiber sensor (21) is arranged on the sensing optical fiber layer (2); the first optical fiber sensor (21) is an optical phase modulation optical fiber sensor; the first optical fiber sensor (21) is used to collect a first segment of optical signal; the first segment of optical signal is used to detect a vital sign of a first user.

2. The device according to claim 1, characterized in that A second optical fiber sensor (22) is also arranged on the sensing optical fiber layer (2); the second optical fiber sensor (22) is an optical phase modulation optical fiber sensor; the second optical fiber sensor (22) is used to collect a second segment of optical signal; the second segment of optical signal is used to detect the vital signs of a second user, the second user being different from the first user.

3. The device according to claim 2, characterized in that The device further comprises: a detection device (4), the detection device (4) comprising a signal conversion module (40) and a processing module (41), the signal conversion module (40) being electrically connected to the first optical fiber sensor (21), the second optical fiber sensor (22) and the processing module (41), respectively.

4. The device according to claim 3, characterized in that The detection device (4) further comprises: A switching switch (44) is electrically connected to the first optical fiber sensor (21), the second optical fiber sensor (22) and the signal conversion module (40) respectively.

5. The device according to claim 3 or 4, characterized in that The signal conversion module (40) comprises: A coherent detection module (42) electrically connected to the first optical fiber sensor (21) and the second optical fiber sensor (22); An analog-to-digital conversion module (43) is electrically connected to the coherent detection module (42) and the processing module (41).

6. The device according to claim 3 or 4, characterized in that The sensing optical fiber layer (2) comprises two LC type interfaces (5), and the two LC type interfaces (5) are respectively used for electrically connecting the first optical fiber sensor (21) and the second optical fiber sensor (22) to the detection device (4).

7. The device according to any one of claims 1 to 4, characterized in that The device further comprises: an anti-noise layer (6), wherein the anti-noise layer (6) is stacked between the sensing optical fiber layer (2) and the second contact layer (3).

8. The device according to claim 7, characterized in that The material of the noise-proof layer (6) is an acrylic plate.

9. The device according to any one of claims 1 to 4 and 8, characterized in that The device further comprises: a latex layer (7), wherein the latex layer (7) is stacked between the sensing optical fiber layer (2) and the first contact layer (1).

10. The device according to any one of claims 1 to 4 and 8, characterized in that The device further comprises: a first conductive layer (8) and a second conductive layer (9), wherein the first conductive layer (8) and the second conductive layer (9) are respectively stacked on both sides of the sensing optical fiber layer (2) and are in contact with two surfaces of the sensing optical fiber layer (2).

11. The device according to claim 10, characterized in that The material of the first conductive layer (8) and the second conductive layer (9) is silicone with a hardness of eight degrees.

12. The device according to any one of claims 1 to 4, 8 and 11, characterized in that The first contact layer (1) and the second contact layer (3) are both leather layers.

13. A mat, characterized in that: The mat adopts the vital sign detection device according to any one of claims 1-12.

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