Detection circuit, wearable device and electronic device

Abstract

The invention relates to a detection circuit, wearable equipment and electronic equipment. The detection circuit comprises a light-emitting element; the power management module comprises a first power management module electrically connected with the first end of the light-emitting element and a second power management module electrically connected with the second end of the light-emitting element; wherein the first power management module is used for outputting a first voltage to the first end, and the second power management module is used for outputting a second voltage to the second end; the power management module is configured to change the first voltage and the second voltage so as to change light-emitting current flowing through the light-emitting element, so that the light-emitting element emits light with preset brightness. The power management modules are arranged at the first end and the second end of the light-emitting element respectively, so that the detection circuit can adjust the brightness of the light-emitting element, the total voltage output of the detection circuit is reduced, the power consumption of the detection circuit is reduced, and the endurance time of the electronic equipment is prolonged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of health information monitoring, and in particular to a detection circuit, a wearable device, and an electronic device. Background Art

[0002] In recent years, with the rapid development of electronic technology, the real-time monitoring of human biometrics has attracted widespread attention, allowing users to understand their physical condition at all times and prevent disease. For example, blood pressure, as a biometric indicator of the human cardiovascular system, plays a crucial role in disease diagnosis, treatment, and prognosis.

[0003] Therefore, providing a health detection device with long battery life has great application prospects and market value. Summary of the Invention

[0004] To overcome the problems existing in the related art, the present disclosure provides a detection circuit, a wearable device and an electronic device.

[0005] According to a first aspect of an embodiment of the present disclosure, a detection circuit is provided, which includes: a light-emitting element; a power management module, the power management module including a first power management module electrically connected to a first end of the light-emitting element and a second power management module electrically connected to a second end of the light-emitting element; wherein, the first power management module is used to output a first voltage to the first end, and the second power management module is used to output a second voltage to the second end; the power management module is configured to change the first voltage and the second voltage to change the light-emitting current flowing through the light-emitting element, so that the light-emitting element emits light of a preset brightness.

[0006] In some embodiments, the power management module obtains a preset voltage value according to the light-emitting current and the internal resistance of the power management module, and changes the voltage value of the first voltage or the voltage value of the second voltage to the preset voltage value.

[0007] In some embodiments, the first power management module includes a first voltage transformation unit and a first communication unit, wherein the first communication unit controls the first voltage transformation unit to change the first voltage according to the light emitting current and the second voltage.

[0008] In some embodiments, the second power management module includes a second voltage transformation unit, wherein the second voltage transformation unit transforms the voltage value of the second voltage into the preset voltage value.

[0009] In some embodiments, the second power management module includes a second communication unit, the second communication unit is signal-connected to the second transformer unit, and the second communication unit is signal-connected to the first power management module; the second communication unit transmits a voltage signal to the first power management module, and the first power management module changes the first voltage.

[0010] In some embodiments, the voltage signal includes a voltage value of the first voltage obtained according to the light emitting current and a voltage value of the second voltage.

[0011] In some embodiments, the second transformer unit is a constant current transformer unit.

[0012] In some embodiments, the light-emitting element is a light-emitting diode, the first end is a positive electrode, and the second end is a negative electrode; the first voltage is greater than the second voltage.

[0013] In some embodiments, the first power management module includes a bias power supply, which is electrically connected to the first voltage conversion unit and the first communication unit and provides power.

[0014] In some embodiments, when the light-emitting current flows through the light-emitting element, the voltage of the light-emitting element is a light-emitting voltage; and the difference between the first voltage and the second voltage is equal to the light-emitting voltage.

[0015] According to a second aspect of an embodiment of the present disclosure, a wearable device is provided, comprising: the detection circuit described in any one of the first aspects; a sensing component, wherein the sensing component receives a light signal emitted by the light-emitting element and reflected by a detection object, and the sensing component obtains detection data based on the light signal; a processor, wherein the processor processes and calculates the detection data obtained by the sensing component to obtain a detection result; and a display screen, wherein the display screen is used to display the detection result, wherein the detection circuit changes the light brightness of the light-emitting element according to the ambient light intensity.

[0016] According to a third aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: the detection circuit described in any one of the first aspects.

[0017] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the present disclosure provides power management modules at the first end and the second end of the light-emitting element, thereby enabling the detection circuit to adjust the brightness of the light-emitting element, reducing the total voltage output of the detection circuit, reducing the power consumption of the detection circuit, and improving the battery life of the electronic device.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] Figure 1 is a circuit structure diagram of a detection circuit according to an exemplary embodiment.

[0021] Figure 2 The figure is a logic flow diagram of a detection circuit according to an exemplary embodiment.

[0022] Figure 3 1 is a diagram showing a first voltage and efficiency improvement of a detection circuit at different light-emitting currents according to an exemplary embodiment. DETAILED DESCRIPTION

[0023] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0024] In related technologies, the light-emitting element of a detection circuit can automatically adjust its brightness based on the actual measurement environment. The brightness of the light-emitting element is positively correlated with the current and voltage values ​​of the light-emitting element. Furthermore, one end of the light-emitting element is powered by a constant voltage, while the other end is powered by a light-emitting element driver that changes the voltage across the light-emitting element. By varying its own supply voltage, the light-emitting element driver changes the voltage difference across the light-emitting element, thereby varying the brightness of the light-emitting element.

[0025] However, since one end of the light-emitting element is powered by a constant voltage, when the brightness of the light-emitting element needs to be reduced, the light-emitting element driving component needs to increase its own voltage output to reduce the voltage difference between the two ends of the light-emitting element, which increases the loss of the detection circuit.

[0026] In order to solve the above technical problems, according to an embodiment of the present disclosure, a detection circuit, a wearable device and an electronic device are provided, wherein the detection circuit includes: a light-emitting element; a power management module, the power management module including a first power management module electrically connected to the first end of the light-emitting element and a second power management module electrically connected to the second end of the light-emitting element; wherein the first power management module is used to output a first voltage to the first end, and the second power management module is used to output a second voltage to the second end; the power management module is configured to change the first voltage and the second voltage to change the light-emitting current flowing through the light-emitting element, so that the light-emitting element emits light of a preset brightness.

[0027] The present invention provides power management modules at the first and second ends of the light-emitting element, respectively, so that the detection circuit can adjust the brightness of the light-emitting element, reduce the total voltage output of the detection circuit, reduce the power consumption of the detection circuit, and improve the battery life of the electronic device.

[0028] It can be understood that the detection circuit involved in the present disclosure can be applicable to any terminal listed below.

[0029] It is understandable that the terminal involved in the present disclosure may also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the terminal can be a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: smart phones (Mobile Phones), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablet computers, wearable devices, or vehicle-mounted devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0030] Figure 1 is a circuit structure diagram of a detection circuit according to an exemplary embodiment.

[0031] In some embodiments, as Figure 1 As shown, the detection circuit may include: a light emitting element 100 and a power management module.

[0032] The light emitting element 100 may be a component for executing the detection method. For example, the detection data may be obtained by enabling the light emitting element 100 to actively emit light and detecting the light emitted by the light emitting element 100 and reflected by the object.

[0033] By applying a light-emitting voltage of a preset value across the light-emitting element 100 so that a light-emitting current of a preset value flows through the light-emitting element 100 , the light-emitting element 100 can emit light of a preset brightness.

[0034] When the light-emitting current flows through the light-emitting element, the voltage of the light-emitting element is the light-emitting voltage.

[0035] The parameters of the light-emitting voltage and the light-emitting current may correspond to the light-emitting brightness. For example, when the parameters of the light-emitting voltage and the light-emitting current increase, the light-emitting brightness of the light-emitting element 100 increases, and when the parameters of the light-emitting voltage and the light-emitting current decrease, the light-emitting brightness of the light-emitting element 100 may decrease.

[0036] The power management module can be used to change its own output voltage. The power management module can include a first power management module 10 electrically connected to the first terminal 101 of the light emitting element 100 and a second power management module 20 electrically connected to the second terminal 102 of the light emitting element 100 .

[0037] Exemplarily, the power management module may be an active front end (AFE) or an optical AFE supporting power chip.

[0038] The first power management module 10 may output a first voltage to the first terminal 101 , and the first power management module 10 may change a voltage value of the first voltage output to the first terminal 101 .

[0039] The second power management module 20 may output a second voltage to the second terminal 102 , and the second power management module 20 may change a voltage value of the second voltage output to the second terminal 102 .

[0040] The power management module can change the first voltage and the second voltage to change the light-emitting current of the light-emitting element 100, thereby changing the light-emitting brightness of the light-emitting element 100. Furthermore, by adjusting the first voltage and the second voltage simultaneously, the first voltage and the second voltage can be simultaneously lowered to achieve a lower total output voltage value of the first voltage and the second voltage while meeting the light-emitting current requirement, thereby reducing losses in the detection circuit.

[0041] The present disclosure provides a first power management module 10 and a second power management module 20 at the first end 101 and the second end 102 of the light-emitting element 100, respectively, so that the detection circuit can adjust the light-emitting current and brightness of the light-emitting element 100 through the first power management module 10 and the second power management module 20. Moreover, since the first power management module 10 and the second power management module 20 can be lowered at the same time, the total voltage output of the detection circuit can be reduced, the power consumption of the detection circuit is reduced, and the battery life of the electronic device is improved.

[0042] In some embodiments, the power management module obtains a preset voltage value according to the light emitting current and the internal resistance of the power management module, and changes the voltage value of the first voltage or the voltage value of the second voltage to the preset voltage value.

[0043] When the light emitting luminance of the light emitting element 100 is adjusted to a specific luminance, a light emitting current corresponding to the light emitting luminance can be obtained.

[0044] The internal resistance of the power management module is a hardware parameter of the power management module itself and is a known parameter in the calculation process of the preset voltage value. Therefore, the minimum voltage value that the power management module can output can be calculated by the internal resistance of the power management module and the preset voltage value.

[0045] Exemplarily, the second power management module 20 may calculate a preset voltage value according to the light emitting current and the internal resistance of the second power management module 20 , and the second power management module 20 may change the voltage value of the second voltage to the preset voltage value.

[0046] Based on the same principle, the first power management module 10 can calculate a preset voltage value according to the light-emitting current and the internal resistance of the first power management module 10 , and the first power management module 10 can change the voltage value of the first voltage to the preset voltage value.

[0047] The present disclosure provides a first power management module 10 and a second power management module 20 at the first end 101 and the second end 102 of the light-emitting element 100, respectively, so that the detection circuit can adjust the light-emitting current and brightness of the light-emitting element 100 through the first power management module 10 and the second power management module 20. Moreover, since the first power management module 10 and the second power management module 20 can be lowered at the same time, the first voltage or the second voltage is adjusted to a preset voltage value, thereby reducing the total voltage output of the detection circuit, reducing the power consumption of the detection circuit, and improving the battery life of the electronic device.

[0048] In some embodiments, as Figure 1 As shown, the first power management module 10 may include a first voltage transformation unit 11 and a first communication unit 12 .

[0049] The first voltage transformation unit 11 may be a unit for changing an output voltage. The first voltage transformation unit 11 may change a first voltage outputted by the first power management module 10 to the first terminal 101 .

[0050] The first communication unit 12 may be a unit for performing signal communication with other components of the detection circuit, wherein the first communication unit 12 may control the first voltage transformation unit 11 to change the first voltage according to the light emitting current and the second voltage.

[0051] Since for the same light-emitting element, within the normal operating power range, the light-emitting current and the light-emitting voltage correspond one to one, the light-emitting voltage can be obtained through the light-emitting current.

[0052] For example, the second power management module 20 may change the voltage value of the second voltage to a preset voltage value. The first communication unit 12 may configure the voltage value of the first voltage to be the sum of the voltage value of the light-emitting voltage and the preset voltage value. This ensures that the difference between the first voltage at the first terminal 101 of the light-emitting element 100 and the second voltage at the second segment of the light-emitting element 100 is the specified voltage value of the light-emitting voltage, thereby changing the light-emitting brightness of the light-emitting element 100 to the specified brightness.

[0053] Exemplarily, the first voltage transformation unit 11 may be a Buck-Boost conversion circuit.

[0054] The present disclosure provides a first power management module 10 and a second power management module 20 at the first end 101 and the second end 102 of the light-emitting element 100, respectively, and controls the first transformer unit 11 through the first communication unit 12 to change the first voltage output by the first power management module 10 to the light-emitting element 100, so that the detection circuit can adjust the light-emitting current and brightness of the light-emitting element 100 through the first power management module 10 and the second power management module 20. Moreover, since the first power management module 10 and the second power management module 20 can be lowered at the same time, the first voltage or the second voltage is adjusted to a preset voltage value, thereby reducing the total voltage output of the detection circuit, reducing the power consumption of the detection circuit, and improving the battery life of the electronic device.

[0055] In some embodiments, as Figure 1 As shown, the second power management module 20 may include a second voltage transformation unit 21, wherein the second voltage transformation unit 21 transforms the voltage value of the second voltage into a preset voltage value.

[0056] The second voltage transformation unit 21 may be a unit for changing an output voltage. The second voltage transformation unit 21 may change the second voltage outputted by the second power management module 20 to the second end 102 .

[0057] Exemplarily, the second power management module 20 may calculate a preset voltage value according to the light emitting current and the internal resistance of the second power management module 20 , and the second voltage transformation unit 21 may change the voltage value of the second voltage to the preset voltage value.

[0058] The first communication unit 12 can configure the voltage value of the first voltage to be the sum of the voltage value of the light-emitting voltage and the preset voltage value, so that the difference between the first voltage at the first terminal 101 of the light-emitting element 100 and the second voltage of the second segment of the light-emitting element 100 is the voltage value of the specified light-emitting voltage, thereby changing the light-emitting brightness of the light-emitting element 100 to the specified light-emitting brightness.

[0059] The present disclosure provides a first power management module 10 and a second power management module 20 at the first end 101 and the second end 102 of the light-emitting element 100, respectively, and changes the second voltage output by the second power management module 20 to the light-emitting element 100 through the second transformer 21, so that the detection circuit can adjust the light-emitting current and brightness of the light-emitting element 100 through the first power management module 10 and the second power management module 20. Moreover, since the first power management module 10 and the second power management module 20 can be lowered at the same time, the first voltage or the second voltage is adjusted to a preset voltage value, thereby reducing the total voltage output of the detection circuit, reducing the power consumption of the detection circuit, and improving the battery life of the electronic device.

[0060] In some embodiments, as Figure 1 As shown, the second power management module 20 may include a second communication unit 22 , and the second communication unit 22 may be signal-connected to the second voltage transformation unit 21 , thereby acquiring the voltage value of the second voltage output by the second voltage transformation unit 21 .

[0061] The second communication unit 22 can also be signal-connected to the first power management module 10. The second communication unit 22 can transmit a voltage signal to the first power management module 10, and the first power management module 10 can change the first voltage according to the voltage signal.

[0062] Exemplarily, the second power management module 20 may calculate a preset voltage value according to the light emitting current and the internal resistance of the second power management module 20 , and the second voltage transformation unit 21 may change the voltage value of the second voltage to the preset voltage value.

[0063] The second communication unit 22 may send the preset voltage value as a voltage signal to the first communication unit 12 .

[0064] The first communication unit 12 can control the first voltage transformation unit 11 based on the voltage value of the light-emitting voltage and the preset voltage value. The voltage value of the first voltage is configured to be the sum of the voltage value of the light-emitting voltage and the preset voltage value. This ensures that the difference between the first voltage at the first terminal 101 of the light-emitting element 100 and the second voltage at the second stage of the light-emitting element 100 is the specified voltage value of the light-emitting voltage, thereby changing the light-emitting brightness of the light-emitting element 100 to the specified brightness.

[0065] The present disclosure provides a first power management module 10 and a second power management module 20 at the first end 101 and the second end 102 of the light-emitting element 100, respectively, and changes the second voltage output by the second power management module 20 to the light-emitting element 100 through the second voltage transformation unit 21, so that the detection circuit can adjust the light-emitting current and brightness of the light-emitting element 100 through the first power management module 10 and the second power management module 20. Moreover, since the first power management module 10 and the second power management module 20 can be lowered at the same time, the first voltage or the second voltage is adjusted to a preset voltage value, thereby reducing the total voltage output of the detection circuit, reducing the power consumption of the detection circuit, and improving the battery life of the electronic device.

[0066] In some embodiments, the voltage signal may include a voltage value of the first voltage obtained according to the light emitting current and a voltage value of the second voltage.

[0067] Exemplarily, the second power management module 20 may calculate a preset voltage value according to the light emitting current and the internal resistance of the second power management module 20 , and the second voltage transformation unit 21 may change the voltage value of the second voltage to the preset voltage value.

[0068] The second communication unit 22 can calculate the voltage value of the first voltage according to the voltage value of the light-emitting voltage and the preset voltage value.

[0069] The second communication unit 22 may transmit the voltage value of the first voltage to the first communication unit 12 as a voltage signal.

[0070] The first communication unit 12 can control the first voltage transformation unit 11 to output the corresponding first voltage according to the voltage value of the first voltage in the voltage signal. This allows the difference between the first voltage at the first end 101 of the light-emitting element 100 and the second voltage at the second end of the light-emitting element 100 to be a specified light-emitting voltage, thereby changing the light-emitting brightness of the light-emitting element 100 to the specified brightness.

[0071] The present disclosure provides a first power management module 10 and a second power management module 20 at the first end 101 and the second end 102 of the light-emitting element 100, respectively, and changes the second voltage output by the second power management module 20 to the light-emitting element 100 through the second transformer 21, so that the detection circuit can adjust the light-emitting current and brightness of the light-emitting element 100 through the first power management module 10 and the second power management module 20. Moreover, since the first power management module 10 and the second power management module 20 can be lowered at the same time, the first voltage or the second voltage is adjusted to a preset voltage value, thereby reducing the total voltage output of the detection circuit, reducing the power consumption of the detection circuit, and improving the battery life of the electronic device.

[0072] In some embodiments, the second transformation unit 21 is a constant current transformation module.

[0073] Small changes in the applied voltage to the light-emitting element 100 can cause large changes in the current flowing through the light-emitting element 100, thereby shortening the lifespan of the light-emitting element 100 and reducing the brightness of the light. By adding the second voltage transformation unit 21 and configuring it as a constant current transformer module, the current flowing through the light-emitting element 100 remains constant, preventing large current changes from shortening the lifespan of the light-emitting element 100 and reducing the brightness of the light.

[0074] In some embodiments, based on the same principle, the first transformation unit 11 may also be a constant current transformation module.

[0075] In some embodiments, as Figure 1 As shown, the light emitting element 100 is a light emitting diode, the first end 101 is the positive electrode, and the second end 102 is the negative electrode; the first voltage is greater than the second voltage.

[0076] Light emitting diodes have low energy consumption and high luminous efficiency. The light emitting element 100 can directly convert electrical energy into light energy. Compared with traditional light bulbs and fluorescent tubes, its energy utilization rate is higher and energy waste is reduced.

[0077] The brightness of the light-emitting element 100 is determined by the voltage difference between the first terminal 101 (positive electrode) and the second terminal 102 (negative electrode). Therefore, the first voltage outputted to the first terminal 101 (positive electrode) must be greater than the second voltage outputted to the second terminal 102 (negative electrode) to ensure that the light-emitting diode can conduct normally.

[0078] In some embodiments, there may be a plurality of light-emitting elements 100 , and the plurality of light-emitting elements 100 may be connected in parallel between the first power management module 10 and the second power management module 20 .

[0079] In some embodiments, as Figure 1As shown, the first power management module 10 may include a bias power supply 13, which may be electrically connected to the first transformer unit 11 and the first communication unit 12, thereby meeting the power supply requirements required for the first transformer unit 11 and the first communication unit 12 to operate normally.

[0080] In some embodiments, when the light-emitting current flows through the light-emitting element, the voltage of the light-emitting element is the light-emitting voltage, and the difference between the first voltage and the second voltage may be equal to the light-emitting voltage.

[0081] The luminous current and luminous voltage at a specific luminous brightness can be obtained by querying the hardware parameters of the light-emitting element 100 or performing experiments in advance.

[0082] For example, when the light-emitting element 100 needs to be adjusted to a target luminous brightness, since the luminous brightness of the light-emitting element 100 corresponds to the luminous current of the light-emitting element 100, the target luminous current corresponding to the target luminous brightness can be obtained from the corresponding relationship between the luminous brightness and the luminous current. Furthermore, since the luminous current and the luminous voltage also correspond to each other, the target luminous voltage corresponding to the target luminous current can be obtained from the target luminous current.

[0083] The second power management module 20 can calculate a preset voltage value according to the target light emitting current and the internal resistance of the second power management module 20, and the second voltage transformation unit 21 can change the voltage value of the second voltage to the preset voltage value.

[0084] The second communication unit 22 can calculate the voltage value of the first voltage according to the voltage value of the target light-emitting voltage and the preset voltage value.

[0085] The second communication unit 22 may transmit the voltage value of the first voltage to the first communication unit 12 as a voltage signal.

[0086] The first communication unit 12 can control the first voltage transformation unit 11 to output the corresponding first voltage according to the voltage value of the first voltage in the voltage signal. This makes the difference between the first voltage at the first end 101 of the light-emitting element 100 and the second voltage at the second end of the light-emitting element 100 equal to the target light-emitting voltage, thereby changing the light-emitting brightness of the light-emitting element 100 to the specified brightness.

[0087] The present disclosure provides a first power management module 10 and a second power management module 20 at the first end 101 and the second end 102 of the light-emitting element 100, respectively, and changes the second voltage output by the second power management module 20 to the light-emitting element 100 through the second transformer 21, so that the detection circuit can adjust the light-emitting current and brightness of the light-emitting element 100 through the first power management module 10 and the second power management module 20. Moreover, since the first power management module 10 and the second power management module 20 can be lowered at the same time, the first voltage or the second voltage is adjusted to a preset voltage value, thereby reducing the total voltage output of the detection circuit, reducing the power consumption of the detection circuit, and improving the battery life of the electronic device.

[0088] In some embodiments, as Figure 1 As shown, the detection circuit further includes a power supply, which can be electrically connected to the light-emitting element 100 through a power management module and supply power to the light-emitting element 100.

[0089] The power supply may include a first power supply 31 electrically connected to the first terminal 101 of the light emitting element 100 through the first power management module 10 and a second power supply 32 electrically connected to the second terminal 102 of the light emitting element 100 through the second power management module 20 .

[0090] Figure 2 The figure is a logic flow diagram of a detection circuit according to an exemplary embodiment.

[0091] In some embodiments, as Figure 2 As shown, the working process of the adaptive voltage regulation power management method of the detection circuit is as follows:

[0092] When the detection circuit is operating, the automatic dimming algorithm calculates the luminous current and luminous voltage corresponding to the target luminous brightness of the light-emitting element 100. The second power management module 20 configures the specified current and calculates the preset voltage value based on the impedance of the second power management module 20. The second voltage conversion unit 21 configures the second voltage value to the preset voltage value.

[0093] The voltage value of the first voltage is calculated based on the voltage value of the first voltage being the sum of the preset voltage value and the voltage value of the light-emitting voltage. The second communication unit 22 transmits the calculated voltage value of the first voltage as adaptive adjustment voltage information to the first communication unit 12. The first communication unit 12 controls the first transformer unit 11 to change the first voltage, and the detection circuit completes the adaptive voltage regulation.

[0094] Exemplarily, the detection circuit can be used to assist in detecting heart rate and blood oxygen. When the photoplethysmography module of the electronic device is working, the automatic dimming algorithm in the heart rate and blood oxygen detection algorithm calculates the configuration specified current IF (light-emitting current) of the light-emitting diode, and configures the specified current IF through the optical active front end (second power management module). At the same time, by querying the relationship between the configuration specified forward voltage VF (light-emitting voltage) and the configuration specified current IF of the corresponding light-emitting diode, the forward voltage VF of the light-emitting diode at the target light-emitting brightness is obtained. Since the light-emitting diode driver of the optical active front end is a constant current source, the minimum constant current source voltage VDRIVE is calculated based on the constant current source characteristics and the determined configuration specified current IF. VLED is calculated according to the formula VF=VLED-VDRIVE, that is, the adaptive adjustment voltage information DAS.

[0095] The optical active front end provides the adaptive voltage adjustment information DAS to the optical active front end supporting power supply chip (first power management module), and finally the optical active front end supporting power supply chip completes the adaptive voltage adjustment.

[0096] Figure 3 1 is a diagram showing a first voltage and efficiency improvement of a detection circuit at different light-emitting currents according to an exemplary embodiment.

[0097] In some embodiments, as Figure 3 As shown, Figure 3 The middle broken line represents the improvement of the energy utilization efficiency of this embodiment at different light-emitting current levels compared to the existing related embodiments, and the bar graph represents the voltage value of the first voltage of the detection circuit.

[0098] For example, the constant voltage power supply of the light-emitting diode is usually set to 5V. After applying the adaptive voltage regulation method, the power supply voltage of the light-emitting diode (including infrared light, green light, and red light and 200mA, 100mA, and 50mA three-speed current) is reduced and the efficiency is improved. Figure 3 shown.

[0099] according to Figure 3 It can be seen that at a light-emitting current of 200 mA, this embodiment can improve the energy utilization efficiency by 25%; at a light-emitting current of 100 mA, this embodiment can improve the energy utilization efficiency by 40%; at a light-emitting current of 50 mA, this embodiment can improve the energy utilization efficiency by 45%.

[0100] Based on the same concept, an embodiment of the present disclosure also provides a wearable device.

[0101] The wearable device may be any wearable device having a detection circuit. For example, the detection device may be a bracelet or a watch having a wearable photoplethysmography module and a detection circuit.

[0102] In some embodiments, the wearable device may include a detection circuit. By respectively providing a first power management module 10 and a second power management module 20 at the first end 101 and the second end 102 of the light-emitting element 100, the detection circuit can adjust the light-emitting current and brightness of the light-emitting element 100 through the first power management module 10 and the second power management module 20. Moreover, since the first power management module 10 and the second power management module 20 can be lowered at the same time, the first voltage or the second voltage is adjusted to a preset voltage value, thereby reducing the total voltage output of the detection circuit, reducing the power consumption of the detection circuit, and improving the battery life of the wearable device.

[0103] In some embodiments, the wearable device may include a sensing component, a processor, and a display screen.

[0104] The sensing component can receive the light signal emitted by the light emitting element and reflected by the detection object, and the sensing component obtains the detection data according to the light signal. Exemplarily, the sensing component can include a photosensitive element to receive the light signal.

[0105] The processor can process the detection data obtained by the computing sensing component to obtain a detection result.

[0106] The display screen can be used to display the test results to the user.

[0107] The detection circuit can change the brightness of the light emitting element according to the ambient light intensity.

[0108] Wearable devices can use photoplethysmography to detect the subject's heart rate, blood oxygen and other health data through sensing components, detection circuits and processors.

[0109] Based on the same concept, an embodiment of the present disclosure further provides an electronic device.

[0110] The electronic device may be a laptop computer, desktop computer, mobile phone, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, translation machine, or wearable device such as a watch or wristband, and may be any electronic device having a detection circuit. In the following description, a wristband is used as an example, but the present disclosure is not limited thereto.

[0111] In some embodiments, the electronic device may include a detection circuit, and by respectively providing a first power management module 10 and a second power management module 20 at the first end 101 and the second end 102 of the light-emitting element 100, the detection circuit can adjust the light-emitting current and brightness of the light-emitting element 100 through the first power management module 10 and the second power management module 20, and since the first power management module 10 and the second power management module 20 can be lowered at the same time, the first voltage or the second voltage is adjusted to a preset voltage value, thereby reducing the total voltage output of the detection circuit, reducing the power consumption of the detection circuit, and improving the battery life of the electronic device.

[0112] Exemplarily, the electronic device may be a wearable watch or bracelet. In a scenario where health data such as heart rate and blood oxygen are detected, the power supply voltage of the light-emitting element can be adaptively adjusted based on the automatic adjustment of the brightness of the light-emitting element, thereby reducing the power consumption of the machine when testing indicators such as heart rate and blood oxygen, and improving battery life.

[0113] In some embodiments, the electronic device may be a watch or bracelet with a wearable photoplethysmography module, and the hardware may include an optical AFE supporting power chip (first power management module), an optical AFE chip (second power management module) and one or more light-emitting diodes (light-emitting elements).

[0114] The output end of the optical AFE supporting power supply chip can be connected to the positive electrode (first end) of the light-emitting diode, and the light-emitting diode driver (second transformer unit) of the optical AFE chip can be connected to the negative electrode (second end) of the light-emitting diode.

[0115] The optical AFE supporting power supply chip may include a communication and configuration circuit (first communication unit), a Buck-Boost conversion circuit (first voltage conversion unit), and an internal power bias (bias power supply).

[0116] The communication and configuration circuitry enables data exchange with the AFE and configuration of its own output voltage. The Buck-Boost converter converts the system supply voltage (Vsystem, VSYS) of the watch and wristband to a voltage between 1.8 and 5.5V, as configured. The internal power bias provides the internal power rail and bias voltage for the power supply chip supporting the optical AFE.

[0117] It is understood that in this disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of related 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. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0118] It is further understood that the terms "second," "second," and the like are used to describe various information, but such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, expressions such as "second," "secondary," and the like are fully interchangeable. For example, without departing from the scope of this disclosure, the second information may also be referred to as the second information, and similarly, the second information may also be referred to as the second information.

[0119] It can be further understood that the terms "center", "longitudinal", "lateral", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation.

[0120] It is further understood that, unless otherwise specified, “connection” includes a direct connection where there are no other components between the two elements, and also includes an indirect connection where there are other elements between the two elements.

[0121] It is further understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0122] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0123] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A detection circuit, characterized in that: The detection circuit comprises: Light-emitting element; a power management module, the power management module comprising a first power management module electrically connected to the first end of the light emitting element and a second power management module electrically connected to the second end of the light emitting element; Wherein, the first power management module is used to output a first voltage to the first end, and the second power management module is used to output a second voltage to the second end; The power management module is configured to change the first voltage and the second voltage to change the light-emitting current flowing through the light-emitting element, so that the light-emitting element emits light with a preset brightness.

2. The detection circuit according to claim 1, characterized in that The power management module obtains a preset voltage value according to the light-emitting current and the internal resistance of the power management module, and changes the voltage value of the first voltage or the voltage value of the second voltage to the preset voltage value.

3. The detection circuit according to claim 2, characterized in that: The first power management module includes a first voltage conversion unit and a first communication unit. The first communication unit controls the first voltage transformation unit to change the first voltage according to the light emitting current and the second voltage.

4. The detection circuit according to claim 2, characterized in that: The second power management module includes a second voltage conversion unit, The second voltage transformation unit transforms the voltage value of the second voltage into the preset voltage value.

5. The detection circuit according to claim 4, characterized in that: The second power management module includes a second communication unit, the second communication unit is signal-connected to the second voltage conversion unit, and the second communication unit is signal-connected to the first power management module; The second communication unit transmits a voltage signal to the first power management module, and the first power management module changes the first voltage.

6. The detection circuit according to claim 5, characterized in that: The voltage signal includes a voltage value of the first voltage obtained according to the light emitting current and a voltage value of the second voltage.

7. The detection circuit according to claim 6, characterized in that: The second voltage transformation unit is a constant current voltage transformation unit.

8. The detection circuit according to claim 1, characterized in that: The light emitting element is a light emitting diode, the first end is the positive electrode, and the second end is the negative electrode; The first voltage is greater than the second voltage.

9. The detection circuit according to claim 3, characterized in that: The first power management module includes a bias power supply, which is electrically connected to the first voltage conversion unit and the first communication unit and provides power.

10. The detection circuit according to claim 1, characterized in that: When the light-emitting current flows through the light-emitting element, the voltage of the light-emitting element is the light-emitting voltage; A difference between the first voltage and the second voltage is equal to the light-emitting voltage.

11. A wearable device, characterized in that: include: The detection circuit according to any one of claims 1 to 10; a sensing component, wherein the sensing component receives a light signal emitted by the light-emitting element and reflected by a detection object, and the sensing component obtains detection data according to the light signal; a processor, configured to process and calculate the detection data obtained by the sensing component to obtain a detection result; A display screen is used to display the detection results. The detection circuit changes the light emitting brightness of the light emitting element according to the ambient light intensity.

12. An electronic device, characterized in that: include: The detection circuit according to any one of claims 1 to 10.

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