Wearable device and wearing state detection method

Abstract

The invention discloses wearable equipment and a wearing state detection method. A wearable device comprises a host and a photoelectric module, and the photoelectric module is arranged on the host and comprises a light emitting unit and a light receiving unit. The photoelectric module is used for controlling the light emitting unit to emit a light signal under the condition that the photoelectric module is in a first working mode, and determining target sign data according to a light reflection signal received by the light receiving unit; the photoelectric module is also used for receiving infrared radiation energy through the light receiving unit under the condition of being in the second working mode, and determining first temperature data according to the infrared radiation energy; the processor is connected with the photoelectric module and determines the wearing state of the wearable device according to the target sign data and the first temperature data. According to the wearable equipment, the wearing state of the wearable equipment can be accurately detected, and the physical sign data and the temperature of the user are detected by multiplexing the light receiving unit in the photoelectric module, so that the miniaturization design of the wearable equipment can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of wearable devices, and in particular to a wearable device and a wearing status detection method. Background Art

[0002] With the popularity of wearable technology, more and more users are beginning to use wearable devices to monitor personal health and safety information. However, in actual use, due to various reasons, users may take off their wearable devices and forget to put them back on, which weakens the monitoring function of wearable devices to a certain extent. Therefore, how to accurately detect the wearing status of wearable devices has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] The embodiment of the present application discloses a wearable device and a wearing status detection method, which can accurately detect the wearing status of the wearable device, and detect the user's vital sign data and temperature by multiplexing the light receiving unit in the optoelectronic module, which can realize the miniaturized design of the wearable device.

[0004] A first aspect of an embodiment of the present application discloses a wearable device, including:

[0005] Host;

[0006] An optoelectronic module is arranged on the host, and the optoelectronic module comprises a light emitting unit and a light receiving unit;

[0007] The optoelectronic module is used to control the light emitting unit to emit a light signal when in the first working mode, and determine the target vital sign data according to the light reflection signal received by the light receiving unit;

[0008] The photoelectric module is further used to receive infrared radiation energy through the light receiving unit when in the second working mode, and determine the first temperature data according to the infrared radiation energy;

[0009] A processor is connected to the optoelectronic module, and the processor is used to determine the wearing state of the wearable device according to the target vital sign data and the first temperature data.

[0010] In some possible embodiments, the optoelectronic module further includes a control unit, and the control unit is connected to the light receiving unit;

[0011] The control unit is used to determine the target vital sign data according to the first electrical signal corresponding to the light reflection signal received by the light receiving unit when the optoelectronic module is in the first working mode;

[0012] The control unit is further configured to determine the first temperature data according to a second electrical signal corresponding to the infrared radiation energy received by the light receiving unit when the optoelectronic module is in the second operating mode.

[0013] In some possible embodiments, the control unit includes a first controller and a second controller, and the first controller and the second controller are respectively connected to the light receiving unit;

[0014] The first controller is used to obtain a first electrical signal corresponding to the light reflection signal received by the light receiving unit when the optoelectronic module is in the first working mode, and determine the target vital sign data according to the first electrical signal;

[0015] The second controller is used to obtain a second electrical signal corresponding to the infrared radiation energy received by the light receiving unit when the optoelectronic module is in the second working mode, and determine the first temperature data according to the second electrical signal.

[0016] In some possible embodiments, the optoelectronic module further includes a switch module, and the switch module is respectively connected to the first controller, the second controller and the light receiving unit;

[0017] The switch module is used to be in a first conducting state when the optoelectronic module is in the first working mode, so as to conduct the path between the light receiving unit and the first controller;

[0018] The switch module is further used to be in a second conducting state when the optoelectronic module is in the second working mode, so as to conduct the path between the light receiving unit and the second controller.

[0019] In some possible embodiments, the switch module includes a first switch and a second switch, the first switch is respectively connected to the first controller, the second controller and the first end of the light receiving unit, and the second switch is respectively connected to the first controller, the second controller and the second end of the light receiving unit;

[0020] The switch module is in a first conducting state, including: the first switch conducts a path between the first end of the light receiving unit and the first controller, and the second switch conducts a path between the second end of the light receiving unit and the first controller;

[0021] The switch module is in a second conducting state, including: the first switch conducts a path between the first end of the light receiving unit and the second controller, and the second switch conducts a path between the second end of the light receiving unit and the second controller.

[0022] In some possible embodiments, the processor is also used to control the photoelectric module to operate in the first working mode and obtain the target vital sign data. If the target vital sign data is within the target vital sign range, the processor controls the photoelectric module to switch to the second working mode.

[0023] In some possible embodiments, the photoelectric module includes a photoelectric volume pulse wave recording (PPG) module;

[0024] The light receiving unit includes an infrared photodiode.

[0025] In some possible embodiments, the optoelectronic module is further used to control the light emitting unit not to emit the light signal when in the second operating mode.

[0026] In some possible embodiments, the wearable device further includes a temperature sensor;

[0027] The temperature sensor is used to obtain second temperature data of the environment in which the wearable device is located;

[0028] The processor is further configured to compare the second temperature data with the first temperature data to determine a wearing state of the wearable device.

[0029] A second aspect of an embodiment of the present application discloses a wearing state detection method, which is applied to a wearable device, wherein the wearable device includes a host and an optoelectronic module, wherein the optoelectronic module is arranged on the host, and the optoelectronic module includes a light emitting unit and a light receiving unit; the method includes:

[0030] When the optoelectronic module is in the first working mode, the optoelectronic module controls the light emitting unit to emit a light signal, and determines the target vital sign data according to the light reflection signal received by the light receiving unit;

[0031] When the optoelectronic module is in the second working mode, the light receiving unit of the optoelectronic module receives infrared radiation energy, and determines first temperature data according to the infrared radiation energy;

[0032] The wearing state of the wearable device is determined according to the target vital sign data and the first temperature data.

[0033] A third aspect of an embodiment of the present application discloses a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor in an electronic device, the electronic device implements the method described in the second aspect above.

[0034] A fourth aspect of the embodiments of the present application discloses a computer program product comprising instructions. When the instructions of the computer program product are executed on a computer, the computer executes the method described in the second aspect.

[0035] The present application provides a wearable device and a wearing status detection method. The wearable device includes a host, an optoelectronic module and a processor, wherein the optoelectronic module is arranged on the host, the optoelectronic module includes a light emitting unit and a light receiving unit, the optoelectronic module is used to control the light emitting unit to emit a light signal when in a first working mode, and determine the target vital sign data according to the light reflection signal received by the light receiving unit, and the optoelectronic module is also used to receive infrared radiation energy through the light receiving unit when in a second working mode, and determine the first temperature data according to the infrared radiation energy; the processor is connected to the optoelectronic module, and the processor is used to determine the wearing status of the wearable device according to the target vital sign data and the first temperature data. In an embodiment of the present application, the processor can determine the wearing state of the wearable device based on the target vital sign data and the first temperature data. Compared with the method of detecting temperature using a contact temperature sensor in traditional technology, the first temperature data in the embodiment of the present application is determined based on the infrared radiation energy detected by the photoelectric module. The detected first temperature data is more accurate, which improves the accuracy of detecting the wearing state of the wearable device. Moreover, the photoelectric module determines the target vital sign data and the first temperature data by multiplexing the light receiving unit, which can realize the miniaturization design of the wearable device and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 An application scenario diagram of a wearable device provided in an embodiment of the present application;

[0038] Figure 2 A structural block diagram of a wearable device provided in an embodiment of the present application;

[0039] Figure 3 A schematic diagram of the structure of an optoelectronic module 120 provided in an embodiment of the present application;

[0040] Figure 4a A structural block diagram of another wearable device provided in an embodiment of the present application;

[0041] Figure 4b A schematic diagram of the structure of the control unit 123 provided in an embodiment of the present application;

[0042] Figure 5a A structural block diagram of another wearable device provided in an embodiment of the present application;

[0043] Figure 5b A schematic diagram of the structure of the switch module 124 provided in the embodiment of the present application in the optoelectronic module 120;

[0044] Figure 6 The switch module provided in the embodiment of the present application is a schematic diagram of the structure of a double-pole double-throw switch that is controlled by the high and low levels of the supply voltage;

[0045] Figure 7 A schematic diagram of the structure of a PPG module of a smart bracelet provided in an embodiment of the present application;

[0046] Figure 8 A flowchart of a wearing status detection method provided in an embodiment of the present application;

[0047] Fig. 9 A flowchart of another wearing status detection method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0049] It should be noted that the terms "including" and "having" and any variations thereof in the embodiments of the present application and the accompanying drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0050] In addition, "at least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, where a, b, c can be single or multiple.

[0051] Currently, many wearable devices support the wearing status detection function to remind users of the current wearing status of the wearable device. Existing wearing status detection solutions mainly use a combination of multiple sensors such as accelerometers, gyroscopes, heart rate sensors, temperature sensors, and pressure sensors to comprehensively determine whether the wearable device is worn on the user by measuring multiple physiological signals of the user. However, when the wearable device is worn loosely, the sensors that need to be in contact with the user may produce errors due to poor contact or weak signals, which directly affects the accuracy of wearing status detection.

[0052] A wearable device and a wearing status detection method are disclosed in the embodiments of the present application, which can accurately detect the wearing status of the wearable device, and the user's vital sign data and temperature detection are detected by multiplexing the light receiving unit in the optoelectronic module, which can realize the miniaturized design of the wearable device.

[0053] Figure 1 This is an application scenario diagram of a wearable device provided in an embodiment of the present application. Figure 1 As shown, the wearable device 100 may include a host 110, an optoelectronic module 120 and a wearing component 130. The optoelectronic module 120 is disposed on the host 110, and the wearable device 100 is worn on the user through the wearing component 130.

[0054] The wearable device 100 may include but is not limited to a smart watch, a smart bracelet, headphones, glasses, etc.

[0055] The host 110 may refer to the body part of the wearable device 100. The host 110 may include but is not limited to components such as a processor, a memory, and a battery. The host 110 may be responsible for processing data, executing programs, storing information, and communicating with other components or external devices.

[0056] The optoelectronic module 120 may refer to a component that converts a received optical signal into an electrical signal and then converts the electrical signal into a physiological signal. The optoelectronic module 120 may include a light emitting unit and a light receiving unit, wherein the light emitting unit is used to generate an optical signal of emitted light, and the light receiving unit is used to receive an optical signal of reflected light corresponding to the emitted light to generate an electrical signal.

[0057] The optoelectronic module 120 may be disposed on the host 110 , for example, on the back of the host 110 , wherein the back of the host 110 may refer to the surface close to the user's skin when the wearable device 100 is worn on the user's hand.

[0058] The optoelectronic module 120 may include a first working mode and a second working mode. When the optoelectronic module 120 is in the first working mode, it may control the light emitting unit 121 to emit a light signal, and determine the target vital sign data according to the light reflection signal received by the light receiving unit 122; when the optoelectronic module 120 is in the second working mode, it may receive infrared radiation energy through the light receiving unit 122, and determine the first temperature data according to the infrared radiation energy.

[0059] The wearing component 130 may refer to a component that fixes the wearable device 100 to the user. The shape and size of the wearing component 130 may correspond to the type of the wearable device 100. For example, when the wearable device 100 is a smart watch, the wearing component 130 may be a watch strap; when the wearable device 100 is a pair of glasses, the wearing component 130 may be a frame.

[0060] The wearable device 100 can obtain the user's target vital sign data and the first temperature data through the first working mode and the second working mode of the optoelectronic module 120 respectively, and then determine the wearing state of the wearable device 100 through the above data.

[0061] Figure 2 This is a structural block diagram of a wearable device provided in an embodiment of the present application. Figure 2 As shown, the wearable device 100 may include a host 110 , an optoelectronic module 120 and a processor 140 , and the optoelectronic module 120 includes a light receiving unit 122 and a light emitting unit 121 .

[0062] The optoelectronic module 120 may be disposed on the host and connected to the processor 140, and the connection may be a direct connection or a contactless indirect connection.

[0063] The optical transmission unit 121 may be configured to transmit optical signals of one or more wavelengths.

[0064] Optionally, the light emitting unit 121 may include one or more, and the light emitting unit 121 may be used to emit a light signal of at least one wavelength, such as one or more of red light, green light or infrared light, etc. The light emitting unit 121 may include but is not limited to a light emitting diode (LED), a laser diode (LD) or an organic light emitting diode (OLED).

[0065] The light receiving unit 122 can be used to receive a light reflection signal corresponding to the light signal emitted by the light emitting unit 121. When the light receiving unit 122 receives the light reflection signal, the conductivity of the semiconductor inside the light receiving unit 122 changes or generates a photoelectric potential, that is, an internal photoelectric effect occurs, thereby generating an electrical signal corresponding to the light reflection signal. The light receiving unit 122 may include but is not limited to a photodiode (PD) or a photodetector.

[0066] In the embodiment of the present application, the light receiving unit 122 can also be used to receive infrared radiation energy. Infrared radiation is a low-frequency electromagnetic wave, and its wavelength range is usually between 0.76-1000 microns, and objects above absolute zero will emit infrared radiation energy. The wavelength range of the light signal that can be received by the light receiving unit 122 in the embodiment of the present application includes the wavelength range of infrared, so the light receiving unit 122 can receive infrared radiation energy. Similarly, when the light receiving unit 122 receives infrared radiation energy, an internal photoelectric effect will also occur, thereby generating an electrical signal corresponding to the infrared radiation energy.

[0067] In some embodiments, the optoelectronic module 120 includes a photoplethysmography (PPG) module; the light receiving unit 122 includes an infrared photodiode.

[0068] The PPG module may refer to a photoelectric module that indirectly measures vital signs data such as heart rate and blood oxygen saturation by detecting changes in the absorption or scattering of light by human tissue.

[0069] Infrared photodiode refers to a photodiode that can convert infrared radiation energy into electrical signals. In the PPG module, the infrared PD acts as a light receiving unit that can receive light reflection signals or infrared radiation energy reflected or scattered by human tissue, and converts them into corresponding electrical signals for subsequent processing by the PPG module.

[0070] It should be understood that the PPG module usually uses light signals such as green light, red light or infrared light to measure target characteristic data. Therefore, the infrared PD needs to be able to receive not only infrared radiation energy, but also visible light reflection signals.

[0071] Optionally, the infrared PD may include an indium gallium arsenide photodiode (InGaAs Photo-Diode, referred to as InGaAs-PD). The sensitivity range of InGaAs-PD is usually between 500nm and 1700nm, that is, it covers the wavelengths of green light, red light and part of infrared light. Therefore, InGaAs-PD can receive both light reflection signals of visible light such as green light and red light, and infrared radiation energy of infrared light. Optionally, the infrared PD may also be other types of PD, as long as the infrared PD can receive both visible light such as green light and red light, and infrared radiation energy, and no specific limitation is made here.

[0072] For example, Figure 3 FIG. 1 is a schematic diagram of the structure of an optoelectronic module 120 provided in an embodiment of the present application. Figure 3 As shown, the optoelectronic module 120 may include a plurality of LEDs and an infrared PD. The plurality of LEDs may be used as light emitting units, and the infrared PD may be used as a light receiving unit.

[0073] By designing that the optoelectronic module 120 includes a PPG module and the light receiving unit 122 includes an infrared PD, the light receiving unit 122 can receive both light reflection signals and infrared radiation energy. The optoelectronic module 120 can detect both the user's vital sign data and the temperature, so that the wearable device 100 can reuse the light receiving unit 122 in the optoelectronic module 120 for wearing detection, which is conducive to realizing the miniaturized design of the wearable device 100.

[0074] The photoelectric module 120 is used to control the light emitting unit 121 to emit a light signal when in the first working mode, and determine the target vital sign data according to the light reflection signal received by the light receiving unit 122. The photoelectric module is also used to receive infrared radiation energy through the light receiving unit 122 when in the second working mode, and determine the first temperature data according to the infrared radiation energy.

[0075] The optoelectronic module 120 may include a first working mode and a second working mode. The first working mode may refer to a working mode in which the optoelectronic module 120 is used to detect a user's vital signs, and the second working mode may refer to a working mode in which the optoelectronic module 120 is used to detect a user's temperature.

[0076] When the optoelectronic module 120 is in the first working mode, the optoelectronic module 120 can control the light emitting unit 121 to emit a light signal, for example, the light emitting unit 121 can be controlled to emit a light signal such as green light, red light or infrared light. The light signal can be reflected or scattered by the surface of human skin, and the light receiving unit 122 can receive the reflected or scattered light reflection signal. The optoelectronic module 120 can determine the target vital sign data according to the light reflection signal received by the light receiving unit 122.

[0077] The target vital sign data may refer to indicator data used to reflect the physiological state of the user. The target vital sign data may include but is not limited to one or more data such as heart rate, blood oxygen saturation, and blood pressure.

[0078] The light receiving unit 122 can generate a corresponding first electrical signal through the internal photoelectric effect according to the received light reflection signal. The photoelectric module 120 can extract relevant information of the physiological activity corresponding to the target vital sign data according to the first electrical signal, and then determine the target vital sign data according to a specific algorithm.

[0079] Exemplarily, when the target vital sign data is heart rate, the light receiving unit 122 can generate a series of voltage signals that vary with time based on the received light reflection signal. Subsequently, the optoelectronic module 120 can accurately calculate the heart rate value by identifying the periodic changes in the signal caused by the heartbeat, that is, the pulse wave, and by measuring the time interval between adjacent pulse waves.

[0080] When the optoelectronic module 120 is in the second working mode, the light receiving unit 122 can receive infrared radiation energy. Since various forms of matter can emit infrared radiation energy according to their temperature, the light receiving unit 122 can receive infrared radiation energy, and the optoelectronic module 120 can determine the first temperature data according to the infrared radiation energy.

[0081] After receiving infrared radiation energy, the photoelectric module 120 can generate a corresponding second electrical signal according to the internal photoelectric effect. Since the infrared radiation energy is proportional to the inherent temperature of the object, the second electrical signal can be an output signal proportional to the object temperature. The photoelectric module 120 can determine the first temperature data based on the second electrical signal.

[0082] In some embodiments, the optoelectronic module 120 is further configured to control the light emitting unit 121 not to emit an optical signal when in the second operating mode.

[0083] When the optoelectronic module 120 is in the second working mode, the optoelectronic module 120 only needs the light receiving unit 122 to receive infrared radiation energy, and does not need the light emitting unit 121 to emit an infrared light signal. Therefore, the optoelectronic module 120 can control the light emitting unit 121 to emit a light signal in the first working mode, and control the light emitting unit 121 not to emit a light signal in the second working mode.

[0084] By controlling the light emitting unit 121 not to emit a light signal when the optoelectronic module 120 is in the second operating mode, not only can unnecessary energy consumption of the light emitting unit 121 in the second operating mode be avoided, but also the light reflection signal can be avoided from affecting the infrared radiation energy received by the light receiving unit 122, thereby accurately obtaining the first temperature data and improving the accuracy of the wearing status detection of the wearable device 100.

[0085] The processor 140 may be configured to determine a wearing state of the wearable device 100 according to the target vital sign data and the first temperature data.

[0086] The processor 140 can determine whether the target vital sign data is within the target characteristic interval, and determine whether the first temperature data is within the target temperature interval, so as to determine the wearing state of the wearable device 100.

[0087] Specifically, only when the target vital sign data is within the target characteristic interval and the first temperature data is within the target temperature interval, the processor 140 can determine that the wearable device 100 is in the worn state. Conversely, if either the target vital sign data or the first temperature data is not within the corresponding interval, the processor 140 can determine that the wearable device 100 is not in the worn state. By combining the target vital sign data and the first temperature data to determine the wearing state of the wearable device, compared with a single data, the misjudgment of the wearing state of the wearable device can be reduced, thereby improving the detection accuracy of the wearing state of the wearable device.

[0088] In some embodiments, the processor 140 is further used to control the optoelectronic module 120 in the first working mode and obtain target vital sign data. If the target vital sign data is within the target vital sign range, the optoelectronic module 120 is controlled to switch to the second working mode.

[0089] The processor 140 can control the photoelectric mode 102 to switch between the first working mode and the second working mode according to whether the acquired target vital sign data is within the target vital sign range. If the target vital sign data is not within the target vital sign range, the photoelectric module 120 is controlled to continue to maintain the first working mode; if the target vital sign data is within the target vital sign range, the photoelectric module 120 is controlled to switch to the second working mode.

[0090] It is understandable that the processor 140 can preliminarily determine the wearing state of the wearable device 100 according to whether the target vital sign data is within the target vital sign interval, and then control whether the photoelectric module 120 switches from the first working mode to the second working mode. If the target vital sign data is not within the target vital sign interval, it can be explained that the wearable device 100 may be in an unworn state or the acquired target vital sign data is abnormal. At this time, the processor 140 can control the photoelectric module 120 to continue to maintain the first working mode and reacquire the target vital sign data for further judgment.

[0091] After the processor 140 confirms that the target vital sign data is in the target vital sign range, the processor 140 can control the optoelectronic module 120 to switch from the first working mode to the second working mode to obtain the first temperature data, and reconfirm the wearing status of the wearable device 100 according to the first temperature data.

[0092] Exemplarily, the target vital sign data may include heart rate data. After receiving the heart rate data determined by the photoelectric module 120, the processor 140 may detect whether the heart rate data is within the target heart rate interval of 40-220 beats per minute. If it is not within the target heart rate interval, it may be preliminarily determined that the wearable device 100 is not worn, and the photoelectric module 120 may be controlled to continue to maintain the first working mode to reacquire the heart rate data; if it is within the target heart rate interval, the photoelectric module 120 may be controlled to switch to the second working mode to perform temperature measurement.

[0093] The processor 140 can control the optoelectronic module 120 to switch to the second working mode according to the target vital sign data being within the target vital sign range, so that the processor 140 can first obtain the target vital sign data and then obtain the first temperature data. This can not only avoid unnecessary energy consumption of the wearable device 100, but also improve the detection accuracy of the wearing status of the wearable device based on the double judgment.

[0094] In an embodiment of the present application, the processor can determine the wearing status of the wearable device based on the target vital sign data and the first temperature data, which can not only reduce the misjudgment of the wearing status of the wearable device and improve the detection accuracy of the wearing status of the wearable device, but also, the optoelectronic module determines the target vital sign data and the first temperature data by multiplexing the light receiving unit, which can also realize the miniaturization design of the wearable device and reduce the cost.

[0095] In some embodiments, Figure 4a As shown, the optoelectronic module 120 may include a light receiving unit 122 , a light emitting unit 121 and a control unit 123 , and the control unit 123 may be connected to the light receiving unit 122 .

[0096] The control unit 123 is used to determine the target vital sign data according to the first electrical signal corresponding to the light reflection signal received by the light receiving unit 122 when the photoelectric module 120 is in the first working mode. The control unit 123 is also used to determine the first temperature data according to the second electrical signal corresponding to the infrared radiation energy received by the light receiving unit 122 when the photoelectric module 120 is in the second working mode.

[0097] The control unit 123 may be an analog front end. The analog front end may refer to an analog system that integrates an analog to digital converter (ADC), an amplifier, a reference source, an excitation circuit, and a modulation and demodulation circuit. The AFE may amplify a weak current signal and convert it into a digital signal, and then generate the required digital signal through data processing methods such as filtering and smoothing. Therefore, in the case of the control unit 123 and the light receiving unit 122, the control unit 123 may determine the corresponding target vital sign data or the first temperature data according to the first electrical signal or the second electrical signal generated by the light receiving unit 122 after data processing methods such as amplification, filtering, and smoothing.

[0098] Further, the control unit 123 may be connected to the light emitting unit 121 and the processor 140 respectively. The control unit 123 is connected to the light emitting unit 121, so that the control unit 123 can control the light emitting unit 121 to emit a light signal in the second working mode of the optoelectronic module 120, and the control unit 123 can control the light emitting unit 121 not to emit a light signal in the second working mode of the optoelectronic module 120.

[0099] The control unit 123 is connected to the processor 140, so that the target vital sign data and the first temperature data generated by the control unit 123 can be transmitted to the processor 140, so that the processor 140 can determine the wearing state of the wearable device 100 according to the target vital sign data and the first temperature data.

[0100] Through the above-mentioned design that the optoelectronic module 120 also includes a control unit 123, the optoelectronic module 120 has the ability to efficiently process the weak current signal generated by the light receiving unit 122, so that the optoelectronic module 120 can accurately obtain the target vital sign data and the first temperature data, and the processor 140 can accurately determine the wearing status of the wearable device 100 based on the target vital sign data and the first temperature data.

[0101] Figure 4b This is a schematic diagram of the structure of the control unit 123 provided in the embodiment of the present application. Figure 4bAs shown, the control unit 123 may include a first controller 1231 and a second controller 1232, and the first controller 1231 and the second controller 1232 are respectively connected to the light receiving unit 122. The first controller 1231 is used to obtain a first electrical signal corresponding to the light reflection signal received by the light receiving unit 122 when the photoelectric module 120 is in the first working mode, and determine the target vital sign data according to the first electrical signal. The second controller 1232 is also used to obtain a second electrical signal corresponding to the infrared radiation energy received by the light receiving unit 122 when the photoelectric module 120 is in the second working mode, and determine the first temperature data according to the second electrical signal.

[0102] The first controller 1231 may be a first analog front end, and the second controller 1232 may be a second analog front end. After receiving the light reflection signal, the first controller 1231 generates a corresponding first electrical signal according to the internal photoelectric effect, and then converts the first electrical signal from an analog signal to a digital signal through the ADC in the first controller 1231, and then obtains the relevant information of the physiological activity corresponding to the target vital sign data according to the digital signal form of the first electrical signal, thereby determining the target vital sign data.

[0103] Similarly, after receiving infrared radiation energy, the second controller 1232 generates a corresponding second electrical signal according to the internal photoelectric effect. After the ADC in the second controller 1232 converts the second electrical signal into a digital signal, the first temperature data can be determined according to the proportional relationship between the infrared radiation energy and the inherent temperature of the object.

[0104] In the embodiment of the present application, the control unit 123 is divided into a first controller 1231 and a second controller 1232, and the first controller 1231 is used to determine the target vital sign data according to the first electrical signal corresponding to the light reflection signal, and the second controller 1232 is used to determine the first temperature data according to the second electrical signal corresponding to the infrared radiation energy, so that each controller can focus on its specific working mode, thereby improving the overall efficiency and response speed of the wearable device 100.

[0105] In some embodiments, Figure 5a As shown, the optoelectronic module 120 may further include a switch module 124, which is respectively connected to the first controller 1231, the second controller 1232 and the light receiving unit 122. The switch module 124 is used to be in a first conduction state when the optoelectronic module 120 is in the first working mode, so as to conduct the path between the light receiving unit 122 and the first controller 1231. The switch module 124 is also used to be in a second conduction state when the optoelectronic module 120 is in the second working mode, so as to conduct the path between the light receiving unit 122 and the second controller 1232.

[0106] The switch module 124 may include a first conduction state and a second conduction state, wherein the first conduction state may refer to a state in which the path between the light receiving unit 122 and the first controller 1231 is conducted when the optoelectronic module 120 is in the first working mode, and the second conduction state may refer to a state in which the path between the light receiving unit 122 and the second controller 1232 is conducted when the optoelectronic module 120 is in the second working mode. Therefore, the first working mode of the optoelectronic module 120 corresponds to the first conduction state of the switch module 124, and the second working mode of the optoelectronic module 120 corresponds to the second conduction state of the switch module 124.

[0107] Furthermore, the processor 140 may control the switch module 124 to switch between the first conductive state and the second conductive state, so that the optoelectronic module 120 switches between the first working mode and the second working mode.

[0108] By designing the switch module 124 in the optoelectronic module 120, the optoelectronic module 120 can switch between the first working mode and the second working mode according to the conduction state of the switch module 124, which can not only avoid unnecessary energy consumption of the wearable device 100, but also accurately switch the working mode of the optoelectronic module 120, thereby improving the accuracy of the optoelectronic module 120 in acquiring the target vital sign data or the first temperature data.

[0109] Figure 5b Schematic diagram of the structure of the switch module 124 provided in the embodiment of the present application in the optoelectronic module 120. Figure 5b As shown, the switch module 124 includes a first switch 1241 and a second switch 1242. The first switch 1241 is respectively connected to the first controller 1231, the second controller 1232 and the first end of the light receiving unit 122, and the second switch 1242 is respectively connected to the first controller 1231, the second controller 1232 and the second end of the light receiving unit 122.

[0110] It is understandable that in the optoelectronic module 120, both ends of the light receiving unit 122 need to be connected to the first controller 1231 or the second controller 1232 to form a complete circuit loop, so that the optoelectronic module 120 meets the working requirements of the first working mode or the second working mode. Therefore, in the case where the optoelectronic module 120 is provided with a switch module 124, a switch needs to be provided at both ends of the light receiving unit 122, so that the two ends of the light receiving unit 122 can be switched at the same time and connected to the same controller, thereby forming a complete circuit loop.

[0111] like Figure 5bAs shown, the switch module 124 may include a first conduction state and a second conduction state. When the switch module 124 is in the first conduction state, the first switch 1241 conducts the path between the first end of the light receiving unit 122 and the first controller 1231, and the second switch 1242 conducts the path between the second end of the light receiving unit 122 and the first controller 1231. When the switch module 124 is in the second conduction state, the first switch 1241 conducts the path between the first end of the light receiving unit 122 and the second controller 1232, and the second switch 1242 conducts the path between the second end of the light receiving unit 122 and the second controller 1232.

[0112] Furthermore, the switch module 124 may be a double-pole double-throw switch that is controlled by the high and low levels of the power supply voltage, and the switch module 124 is in the first conducting state by default. Figure 6 The switch module provided in the embodiment of the present application is a schematic diagram of a double-pole double-throw switch that is controlled by the high and low levels of the supply voltage. Figure 6 As shown, the switch module 124 has a control pin INA of the switch module 124, two common terminals (Common, abbreviated as COM), two normally closed terminals (Normally Closed, abbreviated as NC) and two normally open terminals (Normally Open, abbreviated as NO), wherein COM1 and COM2 can represent the first and second terminals of the light receiving unit 122, NC1 and NC2 can represent the two ends of the conduction path corresponding to the first and second terminals respectively when the light receiving unit 122 is connected to the first controller 1231, and NO1 and NO2 can represent the two ends of the conduction path corresponding to the first and second terminals respectively when the light receiving unit 122 is connected to the second controller 1232.

[0113] Table 1 shows the control gating of the switch module 124 according to the high and low levels of the circuit power supply voltage. As shown in Table 1, when the circuit power supply voltage Vcc is at a high level, INA is 1, the switch module 124 is in the first conduction state, COM1 is closed at NC1, and COM2 is closed at NC2, so that the light receiving unit 122 is connected to the first controller 1231; when the circuit power supply voltage Vcc is at a low level, INA is 0, the switch module 124 is in the second conduction state, COM2 is closed at NO1, and COM2 is closed at NO2, so that the light receiving unit 122 is connected to the second controller 1232.

[0114] Table 1

[0115] Vcc INA Closed state Low level 0 NO1=COM1,NO2=COM2 High level 1 NC1=COM1,NC2=COM2

[0116] Optionally, the switch module 124 may also be another type of double-pole double-throw switch.

[0117] In the embodiment of the present application, by designing a switch module 124 including a first switch 1241 and a second switch 1242, the connection between the light receiving unit 122 and different controllers is realized, so that the optoelectronic module 120 can be switched to a corresponding working mode according to the conduction state of the switch module 124, thereby meeting various needs of the wearable device 100. In addition, since the conduction state of the switch module 124 is switched by the high and low levels of the circuit power supply voltage, unnecessary energy consumption can be avoided, while reducing dependence on external control signals, simplifying the control logic of the wearable device 100, and improving the stability and reliability of the wearable device 100.

[0118] In some embodiments, the wearable device 100 also includes a temperature sensor; the temperature sensor is used to obtain second temperature data of the environment in which the wearable device 100 is located; the processor 140 is also used to compare the second temperature data with the first temperature data to further determine the wearing state of the wearable device 100.

[0119] After the wearable device 100 acquires the target vital sign data and the first temperature data, the processor 140 may acquire the second temperature data of the environment in which the wearable device 100 is located according to the temperature sensor, and further determine the wearing state of the wearable device 100.

[0120] When the first temperature data and the second temperature data are the same, the processor 140 may assume that the optoelectronic module 120 obtains ambient temperature data through the light receiving unit 122, that is, the optoelectronic module 120 deviates from the wearing position of the wearable device 100, and therefore it can be determined that the wearable device 100 is in a non-worn state.

[0121] When the first temperature data and the second temperature data are different, the processor 140 may assume that the optoelectronic module 120 obtains human body temperature data through the light receiving unit 122, that is, the wearable device 100 is still close to the user, and therefore it can be determined that the wearable device 100 is in a worn state.

[0122] The temperature sensor may be disposed on the host 110, for example, on the front or side of the host 110. The temperature sensor may include but is not limited to a thermopile temperature sensor, an infrared temperature sensor, or a thermistor temperature sensor.

[0123] In an embodiment of the present application, the second temperature data of the wearable device 100 can be obtained through the temperature sensor, so that the processor 140 can eliminate the potential interference of the ambient temperature on the wearing status detection result through the second temperature data and the first temperature data when the wearable device 100 has preliminarily determined the wearing status, and further determine the wearing status of the wearable device 100, which helps to improve the accuracy of the wearing status detection of the wearable device 100.

[0124] In some embodiments, the wearable device may further include a prompt module. The prompt module is used to prompt the user when the wearing state of the wearable device 100 is not worn.

[0125] The prompt module can be connected to the processor 140. After the processor 140 determines the wearing state of the wearable device 100, the prompt module can generate prompt information according to the instruction of the processor 140. The prompt information can be used to prompt the user that the wearable device is currently not worn.

[0126] Optionally, the prompt module may generate prompt information after the processor 140 obtains the target vital sign data to preliminarily determine the wearing status of the wearable device 100, or may generate prompt information after the processor 140 obtains the first body temperature data and determines the wearing status of the wearable device 100, or may generate prompt information after the processor 140 determines the wearing status of the wearable device 100 based on whether the first body temperature data and the second body temperature data are consistent, but is not limited to this.

[0127] Optionally, the prompt module can be a display, etc., which reminds the user of the current wearing status of the wearable device 100 through prompt messages in graphic form; the prompt module can also be a speaker, etc., which reminds through audio; the prompt module can also be a buzzer, etc., which reminds through vibration, etc., but is not limited to this.

[0128] In the embodiment of the present application, the prompt module reminds the user that the wearable device 100 is in the unworn state, so that the user can promptly discover that the wearable device 100 is in the unworn state, and thus wear the wearable device 100 in time, avoiding problems such as functional failure or data record loss caused by forgetting to wear the wearable device 100, so that the user can receive reminders of the wearing status of the wearable device 100 in time, which greatly improves the practicality and user experience of the wearable device 100.

[0129] The following uses a smart bracelet as an example of a wearable device to further introduce this application.

[0130] Figure 7 This is a schematic diagram of the structure of a PPG module of a smart bracelet provided in an embodiment of the present application. Figure 7As shown, the smart bracelet 700 may include a host and a PPG module 710 consisting of a PD 711, a group of LEDs 712, a first analog front end 713, a second analog front end 714, a first switch 715, and a second switch 716. Among them, a group of LEDs 712 generally includes three LEDs, and the three LEDs may be a red LED, a green LED, and an infrared LED, respectively, wherein the red LED and the infrared LED may be used for measuring blood oxygen saturation, and the green LED may be used for measuring heart rate; the first analog front end 713 may be a first controller for determining target vital sign data, and the second analog front end 714 may be a second controller for determining first body temperature data.

[0131] When the PPG module 710 is in the first working mode, the first switch 715 and the second switch 716 are in the first on state by default, and the PPG module 710 can control one or more of the three LEDs to emit light signals, and the light signals emitted by the LEDs illuminate the skin, and a part of the emitted light signals is absorbed by the blood and tissues in the process of penetrating the skin, and the transmitted light or reflected light thereof is received by the PD 711. After the PD 711 converts the received transmitted light or reflected light into a first electrical signal, the first analog front end 713 can determine the corresponding PPG signal data according to the first electrical signal.

[0132] After the processor of the smart bracelet 700 determines that the PPG signal data is within the corresponding target vital sign interval, it controls the first switch 715 and the second switch 716 to switch to the second conduction state, thereby controlling the PPG module 710 to switch to the second working mode. Subsequently, the processor can control the three LEDs 712 to not emit light, use the PD 711 to receive infrared radiation energy and convert it into a second electrical signal, and the second analog front end 714 can generate the corresponding first body temperature data according to the second electrical signal. The processor of the smart bracelet 700 can determine the wearing state of the smart bracelet 700 according to the PPG signal data and the first body temperature data.

[0133] Figure 8 The present invention provides a flowchart of a wearing state detection method according to an embodiment of the present invention. The wearing state detection method is applied to a wearable device, wherein the wearable device comprises a host and an optoelectronic module, wherein the optoelectronic module is arranged on the host, and the optoelectronic module comprises a light emitting unit and a light receiving unit. Figure 8 As shown, the method specifically comprises the following steps:

[0134] Step 801, when the optoelectronic module is in the first working mode, the optoelectronic module controls the light emitting unit to emit a light signal, and determines the target vital sign data according to the light reflection signal received by the light receiving unit.

[0135] Step 803 , when the optoelectronic module is in the second working mode, receiving infrared radiation energy through the light receiving unit of the optoelectronic module, and determining first temperature data according to the infrared radiation energy.

[0136] The optoelectronic module can multiplex the same light receiving unit to receive the light reflection signal in the first working mode to determine the target vital sign data, and receive the infrared radiation energy in the second working mode to determine the first temperature data.

[0137] Step 805: Determine the wearing state of the wearable device according to the target vital sign data and the first temperature data.

[0138] The processor can preliminarily determine the wearing state of the wearable device according to whether the target vital sign data is within the target vital sign range, and further determine the wearing state of the wearable device according to whether the first temperature data is within the target temperature range.

[0139] For example, the processor can preliminarily determine the wearing status of the wearable device based on whether the heart rate data is within the target heart rate range of 40-200 beats per minute, and further determine the wearing status of the wearable device based on whether the first temperature data is within the target temperature range of 30°C-42°C.

[0140] In an embodiment of the present application, by multiplexing the light receiving unit of the optoelectronic module, the optoelectronic module can determine the target vital sign data in the first working mode and determine the first temperature data in the second working mode. Not only can the wearing state of the wearable device be effectively detected through the target vital sign data and the first temperature data, but also the bottom surface of the wearable device can be miniaturized.

[0141] Fig. 9 This is a flowchart of another wearing status detection method provided in an embodiment of the present application. Fig. 9 As shown, the following steps are included:

[0142] Step 902, when the optoelectronic module is in the first working mode, the optoelectronic module controls the light emitting unit to emit a light signal, and determines the target vital sign data according to the light reflection signal received by the light receiving unit.

[0143] Step 904 , determine whether the target vital sign data is within the target vital sign range, if not, execute step 902 , if yes, execute step 906 .

[0144] The processor can make a first judgment based on whether the target vital sign data is within the target vital sign range. If it is not within the target vital sign range, step 902 is executed to reacquire the target vital sign data. If it is within the target vital sign range, the photoelectric module is controlled to switch to the second working mode.

[0145] Optionally, if the target vital sign data is not within the target vital sign interval, the processor may determine that the wearing state of the wearable device is a non-wearing state, and execute step 902 to reacquire the target vital sign data.

[0146] Optionally, the processor may execute step 902 immediately, or may execute step 902 after a predetermined time period, such as 1 minute, 5 minutes, or 10 minutes, etc. The length of the predetermined time period may be set according to actual needs. At the same time, it is understandable that when a subsequent step needs to repeat a previous step, the above-mentioned processing method of executing the corresponding step after a predetermined time period may be followed, and no further description will be given.

[0147] Step 906 , controlling the optoelectronic module to be in the second working mode, receiving infrared radiation energy through the light receiving unit of the optoelectronic module, and determining first temperature data according to the infrared radiation energy.

[0148] Step 908 , determining whether the first temperature data is within the target temperature range, if not, executing step 906 , and if so, executing step 910 .

[0149] The processor can make a second judgment based on whether the first temperature data is within the target temperature range. If it is not within the target temperature range, step 906 is executed to reacquire the first temperature data. If it is within the target temperature range, the second temperature data of the environment in which the wearable device is located is detected by the temperature sensor.

[0150] Optionally, if the first temperature data is not within the target temperature range, the processor may determine that the wearing state of the wearable device is a non-wearing state, and execute step 906 to reacquire the first temperature data.

[0151] Step 910: Detect second temperature data of the environment in which the wearable device is located by using a temperature sensor.

[0152] When the processor determines that the first temperature data is within the target temperature range, the processor controls to turn on the temperature sensor to detect second temperature data of the environment in which the wearable device is located.

[0153] The temperature sensor is only used to obtain the second temperature data of the environment in which the wearable device is located, and is not used to obtain other temperature data.

[0154] Optionally, the first temperature data determined by the optoelectronic module and the second temperature data acquired by the temperature sensor are both relative temperatures.

[0155] Step 912, determine whether the first temperature data and the second temperature data are the same, if so, execute step 914, if not, execute step 916.

[0156] The processor can make a third judgment based on whether the first temperature data and the second temperature data are the same. If they are the same, it is considered that the first temperature data obtained by the optoelectronic module is ambient temperature data, that is, the wearable device is not worn tightly or is not worn. If they are not the same, it can be determined that the wearing state of the wearable device is worn.

[0157] Step 914: determine whether the wearing state of the wearable device is a non-wearing state.

[0158] When it is determined that the wearing state of the wearable device is not worn, step 902 may be executed to restart acquiring the target vital sign data, step 906 may be executed to reacquire the first temperature data, and step 910 may be executed to reacquire the second temperature data, but is not limited thereto.

[0159] Step 916: Determine whether the wearing state of the wearable device is a worn state.

[0160] In the embodiment of the present application, through the triple judgment of the above-mentioned target vital sign data, the first temperature data and the second temperature data, not only the wearing status of the wearable device can be accurately identified, but also the miniaturization and low-power operation of the wearable device can be further realized through the multiplexing of the light receiving unit of the optoelectronic module, the switching of the working mode, and the turning on and off of the temperature sensor.

[0161] An embodiment of the present application discloses a computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the processor implements one or more steps in any of the above methods.

[0162] An embodiment of the present application discloses a computer program product, which includes a computer program. When the computer program can be executed by a processor, the processor implements one or more steps in any of the above methods.

[0163] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a ROM, etc.

[0164] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wearable device, characterized in that: include: Host; An optoelectronic module is arranged on the host, and the optoelectronic module comprises a light emitting unit and a light receiving unit; The optoelectronic module is used to control the light emitting unit to emit a light signal when in the first working mode, and determine the target vital sign data according to the light reflection signal received by the light receiving unit; The photoelectric module is further used to receive infrared radiation energy through the light receiving unit when in the second working mode, and determine the first temperature data according to the infrared radiation energy; A processor is connected to the optoelectronic module, and the processor is used to determine the wearing state of the wearable device according to the target vital sign data and the first temperature data.

2. The wearable device according to claim 1, characterized in that: The optoelectronic module further includes a control unit, and the control unit is connected to the light receiving unit; The control unit is used to determine the target vital sign data according to the first electrical signal corresponding to the light reflection signal received by the light receiving unit when the optoelectronic module is in the first working mode; The control unit is further configured to determine the first temperature data according to a second electrical signal corresponding to the infrared radiation energy received by the light receiving unit when the optoelectronic module is in the second operating mode.

3. The wearable device according to claim 2, characterized in that: The control unit includes a first controller and a second controller, wherein the first controller and the second controller are respectively connected to the light receiving unit; The first controller is used to obtain a first electrical signal corresponding to the light reflection signal received by the light receiving unit when the optoelectronic module is in the first working mode, and determine the target vital sign data according to the first electrical signal; The second controller is used to obtain a second electrical signal corresponding to the infrared radiation energy received by the light receiving unit when the optoelectronic module is in the second working mode, and determine the first temperature data according to the second electrical signal.

4. The wearable device according to claim 3, characterized in that: The optoelectronic module further includes a switch module, and the switch module is respectively connected to the first controller, the second controller and the light receiving unit; The switch module is used to be in a first conducting state when the optoelectronic module is in the first working mode, so as to conduct the path between the light receiving unit and the first controller; The switch module is further configured to be in a second conducting state when the optoelectronic module is in the second operating mode, so as to conduct the path between the light receiving unit and the second controller.

5. The wearable device according to claim 4, characterized in that: The switch module includes a first switch and a second switch, the first switch is respectively connected to the first controller, the second controller and the first end of the light receiving unit, and the second switch is respectively connected to the first controller, the second controller and the second end of the light receiving unit; The switch module is in a first conducting state, including: the first switch conducts a path between the first end of the light receiving unit and the first controller, and the second switch conducts a path between the second end of the light receiving unit and the first controller; The switch module is in a second conducting state, including: the first switch conducts a path between the first end of the light receiving unit and the second controller, and the second switch conducts a path between the second end of the light receiving unit and the second controller.

6. The wearable device according to claim 1, characterized in that: The processor is further configured to control the photoelectric module to operate in the first working mode and obtain the target vital sign data. If the target vital sign data is within the target vital sign interval, the processor controls the photoelectric module to switch to the second working mode.

7. The wearable device according to claim 1, characterized in that: The photoelectric module includes a photoelectric volume pulse wave recording (PPG) module; The light receiving unit includes an infrared photodiode.

8. The wearable device according to claim 1, characterized in that: The optoelectronic module is further used to control the light emitting unit not to emit the light signal when in the second working mode.

9. The wearable device according to any one of claims 1 to 8, characterized in that: The wearable device also includes a temperature sensor; The temperature sensor is used to obtain second temperature data of the environment in which the wearable device is located; The processor is further configured to compare the second temperature data with the first temperature data to determine a wearing state of the wearable device.

10. A wearing status detection method, characterized in that: Applied to a wearable device, the wearable device comprises a host and an optoelectronic module, the optoelectronic module is arranged on the host, and the optoelectronic module comprises a light emitting unit and a light receiving unit; the method comprises: When the optoelectronic module is in the first working mode, the optoelectronic module controls the light emitting unit to emit a light signal, and determines the target vital sign data according to the light reflection signal received by the light receiving unit; When the optoelectronic module is in the second working mode, the light receiving unit of the optoelectronic module receives infrared radiation energy, and determines first temperature data according to the infrared radiation energy; The wearing state of the wearable device is determined according to the target vital sign data and the first temperature data.

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