Vital sign detection system and corresponding control method

Abstract

The present invention provides a vital sign detection system and a corresponding control method. The vital sign detection system includes a vital sign detection device for detecting the vital signs of an object; a controller, which determines whether a first predetermined event occurs, and in response to the occurrence of the first predetermined event, controls the vital sign detection device to switch to a disabled mode, during the disabled mode, determines whether a second predetermined event occurs, and in response to the occurrence of the second predetermined event, controls the vital sign detection device to switch from the disabled mode to a second enabled mode. The above vital sign detection system and corresponding control method can monitor the vital signs of a user without affecting the user's sleep quality.

Description

[Technical field]

[0001] The present invention relates to a vital sign detection system, and more particularly to a vital sign detection system capable of automatically shutting down a photoplethysmography (PPG) sensor. [Background technology]

[0002] Unless otherwise indicated herein, the approaches described in this section are not prior art to the claims listed later and are not admitted as prior art in this section.

[0003] With the aging of society, the burden on hospital resources is getting heavier. In addition, as people age and the pressure of modern life increases, cardiovascular diseases are also increasing. Therefore, biosignal self-measurement measurement equipment has become an important goal for the development of the healthcare industry. By sensing or detecting medical health information such as electrocardiogram (ECG), photoplethysmography (PPG), heart rate and blood pressure of patients in a biosignal self-measurement manner, patients can monitor their physiological conditions at any time to relieve the pressure of hospital resources and provide necessary medical care for patients. In recent years, wearable devices have become a hot topic. Some wearable devices are able to track medical health information. Among various medical health information, PPG information is important information, which is related to the heart rate, oxygenated hemoglobin saturation (SPO2), blood pressure, sleep stage, and sleep apnea of ​​the user wearing the wearable device. Typically, a PPG sensor for obtaining PPG information includes a light emitter that emits visible light (green light). However, the light leaked from the light emitter may adversely affect the sleep quality of the user wearing the wearable device, especially when the user is in bed but has not yet fallen asleep. [Summary of the invention]

[0004] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce the concepts, key points, benefits, and advantages of the novel and advanced technologies described herein. Selected implementations are further described below in the detailed description. Therefore, the following summary is not intended to identify the essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

[0005] A vital sign detection system comprises: a vital sign detection device capable of detecting the vital signs of an object; and a controller, which determines whether a first predetermined event occurs, and in response to the occurrence of the first predetermined event, controls the vital sign detection device to switch from a first enabled mode to a disabled mode; wherein, while the vital sign detection device is in the disabled mode, the controller determines whether a second predetermined event occurs, and wherein, in response to the occurrence of the second predetermined event, the controller controls the vital sign detection device to switch from the disabled mode to a second enabled mode.

[0006] A control method for a vital sign detection device, which can detect the vital signs of an object, comprises: determining whether a first predetermined event occurs when the vital sign detection device is in a first enabled mode; in response to the occurrence of the first predetermined event, controlling the vital sign detection device to switch from the first enabled mode to a disabled mode; while the vital sign detection device is in the disabled mode, determining whether a second predetermined event occurs; and in response to the occurrence of the second predetermined event, controlling the vital sign detection device to switch from the disabled mode to a second enabled mode.

[0007] These and other objects of the present invention will no doubt become apparent to those skilled in the art after reading the following detailed description of the preferred embodiment, which is illustrated in the various diagrams and figures.

Brief Description of the Drawings

[0008] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated into and constitute a part of the present disclosure. The accompanying drawings illustrate embodiments of the present disclosure and together with the description are used to explain the principles of the present disclosure. It is understood that the drawings are not necessarily drawn to scale, as some components may be shown out of proportion to the size in actual implementation in order to clearly illustrate the concepts of the present disclosure.

[0009] Figure 1 An exemplary embodiment of a vital signs detection system is shown.

[0010] Figure 2 The locations of the light emitters are shown.

[0011] Figure 3 An exemplary embodiment of a control method of a vital sign detection device is shown.

[0012] Figure 4 Examples of various modes of the vital sign detection device at various time periods are shown.

[0013] Figure 5 An example is shown in which the controller generates a count value through a counting operation of an internal counter.

[0014] Fig. 6A and Figure 6B A schematic diagram showing a motion signal generated by a motion sensor for a monitored object.

[0015] Figure 7 An example is shown in which the controller generates a count value through a counting operation of another internal counter.

[0016] Figure 8 A schematic diagram of a vital signs detection system is shown. [Specific implementation method]

[0017] The following description is the best solution for implementing the present invention. This description is made to illustrate the general principles of the present invention and should not be considered as limiting. The scope of the present invention is determined by reference to the attached claims.

[0018] Figure 1 An exemplary embodiment of a vital sign detection system is shown. Figure 1 As shown, a vital sign detection system 1 is provided. In this embodiment, the vital sign detection system 1 operates to monitor at least one vital sign of an object, such as a user, to generate a vital sign signal. In one embodiment, the monitored vital sign is a photoplethysmogram (PPG) of the user of the vital sign detection system. When the user is in bed but has not fallen asleep, the vital sign detection system can automatically disable a vital sign detection device including a light emitter, and then enable the vital sign detection device when the user falls asleep. Figure 1 As shown, the vital sign detection system 1 includes a memory 10, a plurality of sensors / detectors 11, a controller 12, and a vital sign detection device 13. In another embodiment, the vital sign detection system 1 further includes a smart home device 14, which can communicate with electronic products / devices in the house, such as smart lights. The memory 10 can store a preset sleep time previously input by a user. According to one embodiment, the plurality of sensors / detectors 11 include a positioning sensor 110, a light detector 111, a motion detector 112, and a voice detector 113. Figure 2 As shown, the vital sign detection device 13 includes a PPG sensor 130, which can emit light from a light emitter 1300. When the vital sign detection device 13 is enabled, the PPG 130 is turned on to emit light through the light emitter 1300 for sensing the pulse of the user's blood vessels to generate a vital sign signal. Figure 2 The position of the light emitter 1300 is shown, and the position of the light emitter 1300 shown in the figure is an example for explaining the light emitted from the PPG sensor, and the actual position of the light emitter 1300 in the PPG 130 is determined according to the system design. When the vital sign detection device 13 is disabled, the PPG 130 is turned off and the light emitter 1300 stops emitting light. The controller 12 generates a control signal S12 and controls the enable / disable mode of the vital sign detection device 13 through the control signal S12 according to the signal / data from the memory 10, the plurality of sensors / detectors 11 and / or the smart home device 14.

[0019] Figure 3 An exemplary embodiment of a control method of a vital sign detection device is shown. Figure 3 As shown, the vital sign detection device 13 is initially in the activation mode (step S30). Figure 4As shown, the vital sign detection device 13 is initially in the activation mode M40 during the period P40. According to an embodiment, in the activation mode M40, the PPG sensor 130 is turned on to emit light periodically by the light emitter 1300. According to another embodiment, in the activation mode M40, the PPG sensor 130 is turned on to emit light continuously by the light emitter 1300. By the light emitter 1300. Referring again to Figure 3 , when the vital sign detection device 13 is in the enabled mode M40, the controller 12 determines whether a first predetermined event occurs during the period P40 (step S31). In this embodiment, the first predetermined event indicates that the user has gone to bed but has not yet fallen asleep. If the controller 12 determines that the first predetermined event has not occurred, the controller 12 determines that the user has not gone to bed, and repeats step S31. Once the controller 12 determines that the first predetermined event has occurred, the controller 12 determines that the user has gone to bed (step S32), and switches the vital sign detection device 13 from the enabled mode M40 to the disabled mode M41 (step S33) through the control signal S12. Figure 4 , the controller 12 determines at time point T40 that the first predetermined event occurs. According to an embodiment, in a period P41 starting from time point T40, the vital sign detection device 13 is in the disabled mode M41, and the PPG sensor 130 is turned off and stops emitting light through the light emitter 1300.

[0020] In the time period P41 when the vital sign detection device 13 is in the disabled mode M41, the controller 12 determines whether a second predetermined event occurs (step S34). In this embodiment, the second predetermined event indicates that the user goes to bed and falls asleep. If the controller 12 determines that the second predetermined event has not occurred, the controller 12 determines that the user has not fallen asleep, and repeats step S34, at which time the vital sign detection device 13 is still in the disabled mode M41. Once the controller 12 determines that the second predetermined event has occurred, the controller 12 determines that the user has fallen asleep (step S35), and switches the vital sign detection device 13 from the disabled mode M41 to another enabled mode M42 (step S36) through the control signal S12. Figure 4 Examples of the various modes of the vital sign detection device 13 in various time periods are shown. Figure 4 , the controller 12 determines that the second predetermined event occurs at the time point T41. According to an embodiment, in the period P42 starting from the time point T41, the vital sign detection device 13 is in the activation mode M42, and the PPG sensor 130 is turned on to continuously emit light through the light emitter 1300.

[0021] like Figure 3As shown, during the time period P42 when the vital signs detection device 13 is in the enabled mode M42, the controller 12 determines whether a third predetermined event occurs (step S37). In this embodiment, the third predetermined event indicates that the user wakes up from sleep. If the controller 12 determines that the third predetermined event has not occurred, the controller 12 determines that the user has not woken up from sleep, and repeats step S37, at which time the vital signs detection device 13 is still in the enabled mode M42. Once the controller 12 determines that the third predetermined event has occurred, the controller 12 determines that the user wakes up from sleep (step S38), and switches the vital signs detection device 13 from the enabled mode M42 to the enabled mode M40 through the control signal S12 (step S39). Refer to Figure 4 , the controller 12 determines at time point T42 that the third predetermined event occurs. Then, the method proceeds to step S30, and the controller 12 determines whether the first predetermined event occurs again (step S31).

[0022] According to an embodiment, the vital sign detection system 1 may automatically disable the vital sign detection device 13 to stop emitting light from the PPG sensor 130 when the user goes to bed, and then automatically enable the vital sign detection device 13 to emit light from the PPG sensor 130 when the user falls asleep. Therefore, during the period when the user goes to bed but does not fall asleep, the PPG sensor 130 does not emit light, thereby avoiding affecting the user's sleep quality due to light leakage from the light emitter 1300 of the PPG sensor 130.

[0023] In an embodiment, in order to determine whether the first predetermined event occurs in step S31, the controller 12 sets a plurality of first conditions and determines whether each of the plurality of first conditions is satisfied. In this embodiment, the controller 12 sets four first conditions. In the case where some of the first conditions are satisfied, the controller 12 determines whether the number of satisfied first conditions (N) is greater than a first threshold value X. If the controller 12 determines that the number of satisfied first conditions is greater than the first threshold value X, the controller 12 determines that the first predetermined event occurs. According to an embodiment, the first threshold value (X) is set to 1 / 100 of the total number of first conditions. For example, in the case where there are four first conditions, the first threshold is set to 3 (X=3) In the following paragraphs, how the controller 12 determines whether the first predetermined event occurs will be described, that is, the details of step S31 will be described.

[0024] In an embodiment, the controller 12 generates a count value by a counting operation of an internal counter, such as Figure 5 Reference Figure 5As shown, the controller 12 resets the count value N to "0" (step S50: N = 0). Then, the controller 12 accesses the memory 10 to read the data D20 representing the preset sleep time Tsleep, and determines whether a time point occurring after a predetermined delay time from the preset sleep time has been reached (step S51A). In this embodiment, the predetermined delay time is 5 minutes, and Figure 5 In the example, step S51A is expressed as "determine whether the time point after (Tsleep+5 minutes) has been reached?" Once the time point is reached, the controller 12 determines that one of the plurality of first conditions is satisfied and the count value N is incremented by "1" (step S52: N+1). If the time point has not been reached, the controller 12 continues to determine whether the time point has been reached (step S51A), and the flow proceeds to step S51B.

[0025] In step S51B, the controller 120 determines whether the user is at a specific location (step S51B). In this embodiment, the specific location is where the user sleeps, such as the user's bedroom. Figure 1 , the positioning sensor 110 is configured to detect the indoor position of the user in a space (e.g., a house) and generate a position signal S110 according to the detection result. The positioning sensor 110 provides the position signal S110 to the controller 12. In an embodiment, the positioning sensor 110 may include at least one device that can provide position information of a specific object that communicates with or is monitored by the at least one device. For example, the at least one device may be Bluetooth, WiFi, a camera, and / or a motion sensor. In the case where the user wears or holds the vital sign detection device 13, the positioning sensor 110 may be set on the vital sign detection device 13. Those skilled in the art know how to obtain the position information of a specific object by analyzing signals or data from Bluetooth, WiFi, cameras, and / or motion sensors based on general positioning technology, so the relevant description is omitted here. If the controller 12 determines that the user is in the bedroom, the controller 12 determines that one of the multiple first conditions is satisfied, and adds "1" to the count value N (step S52: N+1).

[0026] Reference Figure 5 After completing the determination of step S51B, the controller 12 determines whether the user's action belongs to a specific type (step S51C). In this embodiment, the specific type indicates that the user has gone to bed but has not fallen asleep. For example, the specific type indicates that the user is in a lying position and / or is stationary for a period of time. Figure 1, the motion detector 112 detects the motion of the user and generates a motion signal S112 according to the detected motion. The motion sensor 112 provides the motion signal S112 to the controller 12. In an embodiment, the motion detector 112 may include at least one device that can provide motion information of a specific object detected or monitored by at least one device (e.g., at least one of an accelerometer, a gyroscope, and a camera). Hereinafter, an embodiment in which the motion detector 112 detects the motion of the user through a gyroscope will be described. Based on the general operation of the gyroscope, the signal generated by the gyroscope contains three components: an X-axis component, a Y-axis component, and a Z-axis component. Therefore, the motion signal S112 generated by the motion sensor 112 contains an X-axis component, a Y-axis component, and a Z-axis component for the gyroscope. Fig. 6A and Figure 6B FIG. 1 is a schematic diagram showing a motion signal generated by a motion sensor for a monitored object. Fig. 6A As shown, when the user is lying on the bed and sleeping during the period P60, the value of the X-axis during the period P60 is small, for example, the value of the X-axis component is less than 1g (9.8m / s2). Therefore, in this embodiment, the controller 12 determines whether the value of the X-axis component contained in the motion signal S112 is less than a predetermined threshold, for example, 1g (9.8m / s2), thereby determining whether the user is in a lying state. If the value of the X-axis component is less than the predetermined threshold, the controller 12 determines that the user is in a lying position (that is, the user's movement is of a specific type), and determines that one of the multiple first conditions is satisfied. Then, the controller 12 increases the count value N by "1" (step S52: N+1).

[0027] like Figure 6B As shown, during P60 when the user is lying in bed sleeping, the user's activity is less. Therefore, in another embodiment, the controller 12 receives the motion signal S112 and analyzes it to obtain the user's activity. The controller 12 determines whether the user activity obtained for more than a predetermined time period (for example, the predetermined time period is 5 minutes) is less than another predetermined threshold (for example, 50), thereby determining whether the user has been stationary for a period of time. If the user activity obtained within 5 minutes is less than 50, the controller 12 determines that the user has been stationary for a period of time (that is, the user's action is of a specific type), and determines that one of the multiple first conditions is met. Then, the controller 12 increases the count value N by "1" (step S52: N+1).

[0028] According to one embodiment, the user's activity is obtained by the following algorithm. The values ​​of the X-axis component, Y-axis component, and Z-axis component of the gyroscope are represented by x, y, and z, respectively. After receiving the motion signal S112, the controller 12 calculates the square root of the sum of the square of x, the square of y, and the square of z to obtain the original activity value Activity_original (Activity_original=Sqet(x 2 +y 2 +z 2 )). Then, the controller 12 performs a high pass filter (HPF) on the original activity value Activity_original to obtain a filtered activity value Activity_filtered (Activity_filtered=HPF(Activity_original)), and the controller 12 calculates the average value of the filtered activity value Activity_filtered. It is acquired every 10 minutes to obtain the average activity MA_Activity (MA_Activayr=mean(Activity_filtered within 10 minutes)), where the average activity MA_Activity is used as the activity of the above-mentioned user. Then, the controller 12 determines whether the average activity MA_Activity is less than 50 for more than 5 minutes ((MA_Activity<50) for more than 5 minutes). If the average activity MA_Activity is less than 50 for more than 5 minutes, the controller 12 determines that the user is in a stationary state for a period of time, and determines that one of the multiple first conditions is met.

[0029] In another embodiment, the controller 12 may determine whether the user's motion is of a specific type by determining whether the user is in a lying position and determining whether the user is stationary for a period of time. If the controller 12 determines that the user is in a lying position, or the user is stationary for a period of time, or the user is in a lying position and is stationary for a period of time, the controller 12 determines that the user's motion is of a specific type.

[0030] Reference Figure 5 After completing the determination of step S51C, the controller 12 determines whether the light near the vital sign detection device 13 is turned off (step S51D). If the controller 12 determines that the light near the vital sign detection device 13 is turned off, the controller 12 increases the count value N by "1" (step S52: N+1). Figure 1As shown, the light detector 111 detects the ambient light of the vital sign detection device 12, and generates a light detection signal S111 according to the detected ambient light. The controller 12 receives the light detection signal S111 and analyzes the light detection signal S111 to obtain the intensity of the ambient light that can indicate the on / off state of the light. In one embodiment, it is determined whether the light near the vital sign detection device 13 is turned off according to the intensity of the ambient light. According to one embodiment, the intensity of the ambient light is obtained by the following algorithm. First, the controller 12 calculates the average value of the luminous flux (lux) of the ambient light detected within 1 minute, wherein the calculated average value is used as the intensity of the above-mentioned ambient light. The controller 12 determines whether the calculated average value is less than a first predetermined threshold value (e.g., 5 lm) for more than a predetermined time period (e.g., 5 minutes), and further determines whether the calculated average value is greater than a second predetermined threshold value (e.g., 50 lm). If the calculated average value is less than 5 lm for more than 5 minutes, the controller 12 determines that the light near the vital sign detection device 13 is turned off. If the calculated average value is greater than 50 lm, the controller 12 determines that the light near the vital sign detection device 13 is not turned off, that is, the light is turned on.

[0031] In another embodiment, when the light near the vital sign detection device 13 is a smart light, the smart home device 14 can communicate with the smart light to control its on / off state, and then generate an indication signal S14 according to the current on / off state of the smart light. The controller 12 receives the indication signal S14 and determines whether the smart light is turned off according to the indication signal S14.

[0032] After completing the steps After that, the count value N indicates the number of times the first condition is satisfied. The controller 12 determines whether the count value N is greater than the first threshold value X (step S53: N>X (X=3)?). If the controller 12 determines that the count value N is greater than the first threshold value X, the controller 12 determines that the first predetermined event occurs, and the process proceeds to Figure 3 If the controller 12 determines that the count value N is not greater than the first threshold value X, the controller 12 determines that the first predetermined event has not occurred, and repeats step S31.

[0033] In an embodiment, in order to determine whether the second predetermined event occurs in step S34, the controller 12 sets a plurality of second conditions and determines whether each of the plurality of second conditions is satisfied. In this embodiment, the controller 12 sets four third conditions. In the case where some of the second conditions are satisfied, the controller 12 determines whether the number (M) of the satisfied second conditions is greater than the second threshold value Y. If the controller 12 determines that the number (M) of the satisfied second conditions is greater than the second threshold value Y, the controller 12 determines that the second predetermined event occurs. According to an embodiment, the second threshold value (Y) is set to 1 / 2 of the total number of the second conditions. For example, in the case where there are three second conditions, the second threshold is set to 2 (Y=2) In the following paragraphs, how the controller 12 determines whether the second predetermined event occurs will be described, that is, the details of step S34 will be described.

[0034] In an embodiment, the controller 12 generates a count value M through a counting operation of another internal counter, such as Figure 7 Reference Figure 7 , the controller 12 resets the count value M to "0" (step S70: M=0). Then, the controller 12 determines whether a period of time has passed after the vital sign detection device 13 is switched from the enabled mode M40 to the disabled mode M41 (step S71A). In this embodiment, the period of time is 20 minutes. Figure 4 , the controller 12 determines whether 20 minutes have passed after the time point T40. Figure 7 In the example, step S71A is expressed as "determine whether 20 minutes have passed after time point T40?" If the controller 12 determines that 20 minutes have passed after time point T40, the controller 12 determines that one of the plurality of second conditions is satisfied and increases the count value M by "1" (step S72: M+1); otherwise, the controller 12 continuously determines whether 20 minutes have passed after time point T40 (step S71A), and the flow proceeds to step S71B.

[0035] In step S71B, the controller 12 determines whether the user's motion belongs to another specific type. In this embodiment, the specific type indicates that the user is asleep. For example, the specific type indicates that the user continues to be still and / or the user breathes regularly after the vital sign detection device 13 is switched to the disabled mode M41. In other words, the controller 12 determines whether the user is still and / or the user breathes regularly after the time point T40. Figure 7 , step S71B is represented as "determine whether the user is still at rest and / or the user is breathing regularly after time point T40?". According to an embodiment, after time point T40, the controller 12 determines whether the above average activity MA_Activity is less than 50 for more than 20 minutes ((MA_Activity<50) for more than 20 minutes). If the average activity MA_Activity is less than 50 and lasts for more than 20 minutes, the controller 12 determines that the user is still at rest (i.e., the user's movement is of a specific type) after the vital sign detection device 13 is switched to the disabled mode M41, and determines that one of the multiple second conditions is satisfied.

[0036] As described above, the motion detector 112 is configured to sense the movement of the user. Therefore, the controller 12 can obtain the movement of the user's body, such as the movement caused by breathing, based on the X-axis component, the Y-axis component, and the Z-axis component contained in the motion signal S112 from the motion detector 112. Usually, when humans fall asleep, the movement caused by breathing is regular. According to another embodiment, after the vital sign detection device 13 is switched to the disabled mode M41 according to the motion detector 112, the controller 12 determines whether the user is breathing regularly. If the user is breathing regularly, the controller 12 determines that the user is continuously still, then the controller 12 determines that the user's movement belongs to a specific type, and determines that one of the multiple second conditions is satisfied.

[0037] Reference Figure 7 After completing the determination of step S71B, the controller 12 determines whether the sound from the object has a regular component (step S71C). Generally, when humans fall asleep, their breathing is regular, and the accompanying snoring is also regular. Figure 1 As shown, the voice detector 113 detects the sound from the user and generates a voice signal S113 according to the detected sound. The voice signal S113 contains the characteristics of the detected sound, such as the intensity, frequency and regularity of the detected sound. According to an embodiment, the controller 12 receives the voice signal S113 and determines whether the detected sound has a regular component according to the voice signal S113, thereby determining whether the user breathes regularly. Figure 7 In the embodiment, step S71C is expressed as "Determine whether the user breathes regularly?" If the detected sound has a regular component, the controller 12 determines that the user falls asleep and determines that one of the plurality of second conditions is satisfied. Then, the controller 12 increases the count value M by "1" (step S72: M+1).

[0038] After completing the steps After that, the count value M indicates the number of times the second condition is satisfied. The controller 12 determines whether the count value M is greater than the second threshold value Y (step S73: M>Y (Y=2)?). If the controller 12 determines that the count value M is greater than the second threshold value Y, the controller 12 determines that the second predetermined event occurs, and the process proceeds to Figure 3 If the controller 12 determines that the count value M is not greater than the second threshold value Y, the controller 12 determines that the second predetermined event does not occur, and repeats step S34.

[0039] Regarding step S37, the controller 12 determines whether the third predetermined event occurs. In this embodiment, the third predetermined event indicates that the user wakes up from sleep. The controller 12 can determine whether the third predetermined event occurs. and S14, determining whether the user wakes up from sleep based on the user's motion, the sound from the user, the user's position, the intensity of the ambient light of the vital sign detection device 12, and / or the on / off state of the light near the vital sign detection device 13. The controller 12 may also determine whether the user wakes up from sleep based on the wake-up time previously stored in the memory 10.

[0040] According to the above embodiment, the vital sign detection system 1 can automatically disable the vital sign detection device 13 to stop emitting light from the PPG sensor 130 when the user is sleeping in bed, and then automatically enable the vital sign detection device 13 to emit light from the PPG sensor 130 when the user falls asleep. Therefore, during the period when the user goes to bed but does not fall asleep, the PPG sensor 130 does not emit light, thereby avoiding affecting the user's sleep quality due to light leakage from the light emitter 1300 of the PPG sensor 130.

[0041] In one embodiment, the vital sign detection system 1 includes several devices, and can be set on these devices Figure 1 Equipment / components shown. Figure 8 Schematic diagram of a vital sign detection system 1 is shown. Figure 8 As shown, in addition to the smart home device 14, the vital sign detection system 1 also includes two devices: a main device 80 and a wearable device 81. For example, the main device 80 can be a smart phone, and the wearable device 81 is a smart watch worn by the user. According to the above description, based on the operations and functions of the positioning sensor 110, the motion detector 112 and the vital sign detection device 13, they are arranged on the smart watch 81. In one embodiment, the memory 10 can be set on the smart phone 80 or the smart watch 81, and the data related to the sleep time and the wake-up time in the memory 10 are pre-entered by the user. In one embodiment, the light detector 111 can be set on the smart phone 80 or the smart watch 81. In another embodiment, in the case where the smart home device 14 is located at the location where the user sleeps (for example, the user's bedroom), the light detector 111 can be set on the smart home device 14. According to one embodiment, the voice detector 113 can be a microphone set on the smart phone 80 or the smart watch 81. According to another embodiment, the voice detector 113 can be set on the smart home device 14 in the following case: the smart home device 14 is located at the location where the user sleeps, such as the user's bedroom. The controller 12 is provided on the smart phone 80 or the smart watch 81. In other embodiments, the controller 12 may be implemented by a processor of the smart phone 80 or the smart watch 81.

[0042] The subject matter described herein sometimes shows different components contained in or connected to other different components. It should be understood that the architecture depicted in this way is merely exemplary, and many other architectures that implement the same function can actually be implemented. In a conceptual sense, any arrangement of components that implement the same function is effectively "associated" so that the desired function is achieved. Therefore, any two components that are combined to obtain a specific function herein can be regarded as "associated" with each other to achieve the desired function, regardless of the architecture or intermediate components. Similarly, any two components that are associated in this way can also be regarded as "operably connected" or "operably coupled" to each other to achieve the desired function, and any two components that can be associated in this way can also be regarded as "operably coupled" to each other to achieve the desired function. Specific examples of "operably coupled" include but are not limited to: physically connectable and / or physically interacting, components, and / or wirelessly interactable and / or wirelessly interacting components, and / or logically interacting and / or logically interacting components.

[0043] Furthermore, with respect to the use of substantially any plural and / or singular terms herein, those having skill in the art can translate from the plural to the singular and / or from the singular to the plural as is appropriate to the context and / or application.

[0044] Those skilled in the art will understand that, in general, the terms used herein, particularly in the appended claims (e.g., the subject matter of the appended claims), are generally intended as "open" terms (e.g., the term "comprising" should be interpreted as "including but not limited to", the term "having" should be interpreted as "having at least", the term "including" should be interpreted as "including but not limited to", etc.). Those skilled in the art will also understand that if a specific number of an introduced claim recitation object is intended, such intent will be explicitly stated in the claims, and in the absence of such a statement, such intent does not exist. For example, to aid understanding, the appended claims may include the use of the introductory phrases "at least one" and "one or more" to introduce claim recitation objects. However, the use of such phrases should not be interpreted as limiting any claim containing such introduced claim recitation with the indefinite article "a or an" to an invention containing only one such recitation, even if the same claim contains the introductory phrases "one or more" or "at least one" and an indefinite article such as "a" or "an" (e.g., "a" and / or "an" should generally be interpreted as meaning "at least one" or "one or more"); the same applies to the case where the claim recitation is introduced with a definite article. In addition, even if a specific number of introduced claim recitations is explicitly stated, those skilled in the art will recognize that such a statement should generally be interpreted as meaning at least the stated number (e.g., a statement of "two recitations" without other modifiers generally means at least two recitations, or two or more recitations). Furthermore, where phrases similar to “at least one of A, B, and C, etc.” are used, generally such constructions are intended to be in the meaning of the phrase as understood by those skilled in the art (e.g., “a system having at least one of A, B, and C” would include, but not be limited to, systems having A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc.). Where phrases similar to “at least one of A, B, or C, etc.” are used, generally such constructions are intended to be in the meaning of the phrase as understood by those skilled in the art (e.g., “a system having at least one of A, B, or C” would include, but not be limited to, systems having A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc.). Those skilled in the art will further appreciate that, whether in the specification, claims, or drawings, substantially any disjunctive word and / or phrase representing two or more alternative terms should be understood to contemplate the possibility of including one of the terms, either of the terms, or both of the terms.For example, the phrase "A or B" should be understood to include the possibilities of "A", "B", or "A and B".

[0045] Although various methods, devices, and systems have been used herein to describe and illustrate some exemplary techniques, it will be appreciated by those skilled in the art that various other modifications and equivalent substitutions may be made without departing from the claimed subject matter. In addition, many modifications may be made to adapt specific situations to the teachings of the claimed subject matter without departing from the central concept described herein. Therefore, it is intended that the claimed subject matter is not limited to the specific examples disclosed, and such claimed subject matter may also include all implementations and their equivalents that fall within the scope of the appended claims.

Claims

1. A vital sign detection system, comprising: Vital sign detection equipment capable of detecting the vital signs of a subject; as well as a controller that determines whether a first predetermined event occurs while the vital sign detection device is in a first enabled mode, and controls the vital sign detection device to switch from the first enabled mode to a disabled mode in response to the occurrence of the first predetermined event; wherein, while the vital sign detection device is in the disabled mode, the controller determines whether a second predetermined event occurs, and wherein, in response to the occurrence of the second predetermined event, the controller controls the vital sign detection device to switch from the disabled mode to a second enabled mode, Wherein the second predetermined event indicates that the subject has fallen asleep, the vital sign detection device emits light when in the second enabled mode.

2. The vital sign detection system according to claim 1, characterized in that: The vital sign detection device includes a photoplethysmographic sensor, the photoplethysmographic sensor including a light emitter, wherein, in the first activation mode, the photoplethysmogram sensor is turned on to emit light continuously or regularly through the light emitter, and Wherein, in the second activation mode, the photoplethysmogram sensor is turned on to continuously emit light through the light emitter.

3. The vital sign detection system as claimed in claim 2, characterized in that: During the period of time that the vital sign detection device is in the second enabled mode, the controller determines whether a third predetermined event occurs, and Wherein, in response to the occurrence of the third predetermined event, the controller controls the vital sign detection device to switch from the second activation mode to the first activation mode.

4. The vital sign detection system as claimed in claim 3, characterized in that: In a third activation mode, the photoplethysmogram sensor is turned on to continuously or regularly emit light through the light emitter.

5. The vital sign detection system according to claim 1, characterized in that: in, The controller sets a plurality of conditions and determines whether each of the plurality of conditions is satisfied, and If the number of conditions met is greater than a threshold, the controller determines that the first predetermined event occurs.

6. The vital sign detection system according to claim 5, further comprising: a memory storing a preset sleep time for the object, wherein the controller determines whether a time point after a predetermined time period from the preset sleep time has been reached, In response to the controller determining that the time point has been reached, the controller determines that one of the multiple conditions is satisfied.

7. The vital sign detection system according to claim 5, further comprising: A positioning sensor detects the position of the object to generate a position signal; The controller determines whether the object is at a specific position according to the position signal. In response to the controller determining that the object is at the specific location, the controller determines that one of the multiple conditions is satisfied.

8. The vital sign detection system according to claim 7, characterized in that: The specific location is where the subject sleeps.

9. The vital sign detection system according to claim 5, further comprising: a motion detector that detects motion of the object and generates a motion signal based on the detected motion; The controller determines whether the motion of the object belongs to a specific type according to the motion signal. In response to the controller determining that the motion of the object belongs to the specific type, the controller determines that one of the multiple conditions is satisfied.

10. The vital sign detection system according to claim 9, characterized in that: This particular type indicates that the subject is in a lying position.

11. The vital sign detection system according to claim 9, characterized in that: This special type indicates that the object has been stationary for a period of time.

12. The vital sign detection system according to claim 9, characterized in that: This movement of the subject of this particular type occurs when the subject goes to bed but has not yet fallen asleep.

13. The vital sign detection system according to claim 5, further comprising: A light detector, used to detect ambient light of the vital sign detection device and generate a light detection signal according to the detected ambient light; The controller determines whether a light near the vital sign detection device is turned off according to the light detection signal. Wherein, in response to the controller determining that the light is turned off, the controller determines that one of the plurality of conditions is satisfied.

14. The vital sign detection system according to claim 5, further comprising: A smart home device controls the on / off state of a smart light near the vital sign detection device and generates an indication signal according to the current on / off state; Wherein, the controller determines whether the smart light near the vital sign detection device is turned off according to the indication signal; In which, in response to the controller determining that the smart light is turned off, the controller determines that one of the multiple conditions is met.

15. The vital sign detection system according to claim 1, characterized in that: The controller sets a plurality of conditions and determines whether each of the plurality of conditions is satisfied, and If the number of conditions met is greater than a threshold, the controller determines that the second predetermined event occurs.

16. The vital sign detection system according to claim 15, characterized in that: The controller determines whether a period of time has passed after the vital sign detection device is switched from the first enabled mode to the disabled mode, Wherein, in response to the controller determining that a period of time has passed, the controller determines that one of the plurality of conditions is satisfied.

17. The vital sign detection system according to claim 16, further comprising: a motion detector, detecting the motion of the object and generating a motion signal according to the detected motion, The controller determines whether the motion of the object belongs to a specific type according to the motion signal. In response to the controller determining that the motion of the object belongs to the specific type, the controller determines that one of the multiple conditions is satisfied.

18. The vital sign detection system according to claim 17, characterized in that: The specific type indicates that the subject remains stationary continuously after the vital sign detection device is switched to the disabled mode.

19. The vital sign detection system according to claim 17, characterized in that: This particular type indicates that the subject is breathing regularly.

20. The vital sign detection system according to claim 17, characterized in that: The movement of the object of the specific type occurs when the object falls asleep.

21. The vital sign detection system of claim 16, further comprising: a voice detector for detecting a sound from the object and generating a voice signal based on the detected sound; wherein the controller determines whether the sound from the object has a regular component according to the voice signal; Wherein, in response to the controller determining that the sound from the object contains the regular component, the controller determines that one of the multiple conditions is satisfied.

22. A control method for a vital sign detection device, which can detect the vital signs of a subject, the control method comprising: determining whether a first predetermined event occurs while the vital sign detection device is in a first enabled mode; In response to the occurrence of the first predetermined event, controlling the vital sign detection device to switch from the first enabled mode to a disabled mode; determining whether a second predetermined event occurs while the vital sign detection device is in the disabled mode; as well as In response to the occurrence of the second predetermined event, controlling the vital sign detection device to switch from the disabled mode to a second enabled mode, Wherein the second predetermined event indicates that the subject has fallen asleep, the vital sign detection device emits light when in the second enabled mode.

23. The vital sign detection method according to claim 22, further comprising: In the first activation mode, the photoplethysmogram sensor is turned on to continuously or regularly emit light via the light emitter; In the disabled mode, the photoplethysmogram sensor is turned off to stop emitting light; as well as In the second activation mode, the photoplethysmogram sensor is turned on so that the light emitter continuously emits light.

24. The method for detecting vital signs according to claim 22, wherein: Determining whether the first predetermined event occurs includes: Set multiple conditions; determining whether each of the plurality of conditions is satisfied; Count the number of conditions that are met; Determine whether the number of conditions met is greater than a threshold; and In response to the number of conditions being met being greater than the threshold, it is determined that the first predetermined event has occurred.

25. The vital sign detection method of claim 24, wherein determining whether each of the plurality of conditions is satisfied comprises: determining whether a time point after a predetermined time period from a preset sleep time has been reached; as well as In response to reaching the time point, it is determined that one of the plurality of conditions is satisfied.

26. The vital sign detection method of claim 24, wherein determining whether each of the plurality of conditions is satisfied comprises: Detecting the location of the object; determining whether the object is at a specific location based on the detected location; as well as In which, in response to the object being at the specific location, it is determined that one of the multiple conditions is satisfied.

27. The vital sign detection method of claim 24, wherein determining whether each of the plurality of conditions is satisfied comprises: detecting motion of the object; determining whether the movement of the object is of a specific type according to the detected movement; Responsive to the motion of the object being of the particular type, it is determined that one of the plurality of conditions is satisfied.

28. The vital sign detection method of claim 24, wherein determining whether each of the plurality of conditions is satisfied comprises: Determining whether the light near the vital sign detection device is turned off according to the ambient light intensity of the vital sign detection device or the indication signal for controlling the light; as well as In response to the light being turned off, it is determined that one of the plurality of conditions is satisfied.

29. The vital sign detection method of claim 22, wherein determining whether the second predetermined event occurs comprises: Set multiple conditions; determining whether each of the plurality of conditions is satisfied; Count the number of conditions that are met; Determine whether the number of conditions that meet the condition is greater than a threshold; as well as In response to the number of conditions being met being greater than the threshold, it is determined that the second predetermined event occurs.

30. The vital sign detection method of claim 29, wherein determining whether each of the plurality of conditions is satisfied comprises: determining whether a period of time has elapsed after the vital sign detection device was switched from the first enabled mode to the disabled mode; as well as In response to the period of time having elapsed, it is determined that one of the plurality of conditions is satisfied.

31. The vital sign detection method of claim 29, wherein determining whether each of the plurality of conditions is satisfied comprises: sensing movement of the object; determining whether the motion of the object is of a specific type according to the sensed motion; as well as Responsive to the motion of the object being of the particular type, it is determined that one of the plurality of conditions is satisfied.

32. The vital sign detection method of claim 29, wherein determining whether each of the plurality of conditions is satisfied comprises: Detect the sound made by the object, wherein determining whether the sound from the object has a regular component according to the detected sound; and Wherein, in response to the sound from the object containing the regular component, it is determined that one of the multiple conditions is satisfied.

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