Head-mounted phototherapy instrument and fault rate detection method of light-emitting unit of head-mounted phototherapy instrument

Abstract

The invention discloses a head-mounted phototherapy instrument and a fault rate detection method for light-emitting units thereof, and a control assembly in the head-mounted phototherapy instrument can determine the number of light-emitting units having faults in each light-emitting module based on the current of a plurality of light-emitting units in the light-emitting module. And the failure rate of the light-emitting units is determined based on the number of the failed light-emitting units in the plurality of light-emitting units, so that the accuracy of determining the failure rate of the light-emitting units is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and particularly to a head-mounted light therapy device and a method for detecting the failure rate of its light-emitting unit. Background Art

[0002] Alzheimer's disease (AD), commonly known as senile dementia, its main pathological features include the deposition of amyloid-β (Aβ) protein. Currently, a head-mounted light therapy device is usually used to treat patients with Alzheimer's disease. The head-mounted light therapy device may include a plurality of light-emitting units, and the plurality of light-emitting units are used to emit near-infrared light with a specific wavelength to the patient's brain. After the near-infrared light penetrates deep into the patient's brain, it can act on the Aβ protein, thereby reducing the deposition of the Aβ protein, and thus realizing the treatment of the patient.

[0003] In the related prior art, in order to ensure the treatment effect on patients, the power of the near-infrared light emitted by the plurality of light-emitting units to the patient's brain needs to reach a power threshold. However, when the failure rate of the plurality of light-emitting units is relatively high, the power of the near-infrared light emitted by the plurality of light-emitting units to the patient's brain may be lower than the power threshold, resulting in a poor treatment effect.

[0004] However, the accuracy of detecting the failure rate of the light-emitting units in the head-mounted light therapy device in the related prior art is relatively low. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems in the related art to some extent. For this reason, an object of the present invention is to provide a head-mounted light therapy device. The control component in the head-mounted light therapy device can determine the number of faulty light-emitting units in the light-emitting module based on the current of the plurality of light-emitting units in each light-emitting module, and determine the failure rate of the light-emitting units based on the number of faulty light-emitting units among the plurality of light-emitting units, thereby improving the accuracy of determining the failure rate of the light-emitting units.

[0006] A second object of the present invention is to provide a method for detecting the failure rate of the light-emitting units in a head-mounted light therapy device.

[0007] To achieve the above object, an embodiment of the first aspect of the present invention provides a head-mounted light therapy device, which includes: a control component and a plurality of light-emitting modules controlled by the control component. Each light-emitting module includes: a driving circuit and a plurality of light-emitting units, and the driving ends of the driving circuit are respectively connected to the input ends of the plurality of light-emitting units;

[0008] Wherein, the control ends of the control component are respectively connected to the input ends of each driving circuit, and the control component outputs a control signal to each driving circuit in response to a detection instruction;

[0009] Each of the driving circuits outputs a driving current to the plurality of light emitting units corresponding to the light emitting module respectively in response to the control signal;

[0010] The detection end of the control component is connected to the voltage VCC in the light emitting module. The current of the voltage VCC is the total working current of the plurality of light emitting units in the light emitting module. The control component determines the number of faulty light emitting units in the light emitting module by identifying the current value of the voltage VCC, and determines the failure rate of the plurality of light emitting units in the plurality of light emitting modules based on the number of faults of the faulty light emitting units in the plurality of light emitting modules.

[0011] In some embodiments, the control component has a plurality of preset current threshold ranges and the number of faulty light emitting units corresponding to the current threshold ranges, and the control component is further configured to:

[0012] Determine the working current of the light emitting module based on the sum of the currents of the plurality of light emitting units in each detected light emitting module;

[0013] Determine the number of faulty light emitting units in each light emitting module based on the working current of each light emitting module.

[0014] In some embodiments, the control component is further configured to:

[0015] For each light emitting module, when the working current of the light emitting module is within the target current threshold range among the plurality of current threshold ranges, the target number corresponding to the target current threshold range is determined as the number of faulty light emitting units in the light emitting module.

[0016] In some embodiments, the lower limit value I of the j-th current threshold range among the plurality of current threshold ranges jmin Satisfies: I jmin =(j - 1 - h)×I 参考 , the upper limit value I of the j-th current threshold range jmax Satisfies: I jmax =(j - 1 + h)×I 参考 ;

[0017] Wherein, j is a positive integer and less than or equal to the total number n of the number of all light emitting units 202 in each light emitting module 20, that is, 0≤j≤n; I 参考 Is the current when each light emitting unit 202 in each light emitting module 20 works normally; h is the current error coefficient.

[0018] In some embodiments, when I jmin Is negative, 0 is taken as Ijmin 。

[0019] In some embodiments, the current error coefficient h is 5%.

[0020] In some embodiments, the control component is further configured to:

[0021] Determine the failure rate of the plurality of light emitting units in the plurality of light emitting modules based on the ratio of the number of failed light emitting units in the plurality of light emitting modules to the total number of the plurality of light emitting units in the plurality of light emitting modules.

[0022] In some embodiments, the control component further includes: a main control circuit and a plurality of signal transmission circuits, and the plurality of signal transmission circuits are respectively connected to the plurality of drive circuits in one-to-one correspondence;

[0023] The control ends of the main control circuit are respectively connected to the input ends of the plurality of signal transmission circuits, and the main control circuit is configured to output the control signal to a corresponding one of the drive circuits through each of the signal transmission circuits.

[0024] In some embodiments, the control component further includes: a current detection circuit;

[0025] The detection ends of the current detection circuit are respectively connected to the input end of the main control circuit and the output ends of the plurality of light emitting units in each of the light emitting modules, and the current detection circuit is configured to send the detected current of the plurality of light emitting units in each of the light emitting modules to the main control circuit;

[0026] The main control circuit is further configured to determine the number of failed light emitting units in the light emitting module based on the current of the plurality of light emitting units in each of the light emitting modules, and determine the failure rate of the plurality of light emitting units in the plurality of light emitting modules based on the number of failed light emitting units in the plurality of light emitting modules.

[0027] In some embodiments, the control component further has a preset failure rate threshold, and the head-mounted light therapy device further includes: an alarm component connected to the control component;

[0028] The control component is further configured to send an alarm message through the alarm component when the failure rate is greater than or equal to the failure rate threshold.

[0029] In some embodiments, each of the light emitting modules further includes: a plurality of resistors, and the plurality of resistors are respectively in one-to-one correspondence with the plurality of light emitting units in the light emitting module;

[0030] Wherein, one end of each resistor is connected to the output end of the corresponding light emitting unit, and the other end of each resistor is connected to the ground terminal.

[0031] In some embodiments, each of the light-emitting units includes a plurality of light-emitting elements connected in series.

[0032] In some embodiments, each of the light-emitting elements includes a light-emitting diode.

[0033] In some embodiments, the control component is further configured to generate the detection instruction in response to a startup operation for the head-mounted light therapy device.

[0034] In some embodiments, the control component is further configured to generate the detection instruction in response to a failure rate detection operation for the light-emitting unit.

[0035] In some embodiments, the control component is further configured to periodically generate the detection instruction.

[0036] To achieve the above object, an embodiment of the second aspect of the present invention provides a method for detecting the failure rate of a light-emitting unit in a head-mounted light therapy device. The head-mounted light therapy device includes: a control component and a plurality of light-emitting modules. Each of the light-emitting modules includes: a driving circuit and a plurality of light-emitting units. The driving ends of the driving circuits are respectively connected to the input ends of each of the light-emitting units, the input end of the driving circuit is connected to the control end of the control component, and the output ends of the plurality of light-emitting units are connected to the detection end of the control component. The method includes:

[0037] The control component outputs a control signal to each of the driving circuits in response to the detection instruction;

[0038] Each of the driving circuits outputs a driving current to the light-emitting units of each of the light-emitting modules in response to the control signal;

[0039] The control component further determines the number of faulty light-emitting units in the light-emitting module based on the sum of the currents of the plurality of light-emitting units in each detected light-emitting module, and determines the failure rate of the plurality of light-emitting units in the plurality of light-emitting modules according to the number of faulty light-emitting units in the plurality of light-emitting modules.

[0040] In some embodiments, the failure rate is positively correlated with the number of faults.

[0041] In some embodiments, the control component has a plurality of preset current threshold ranges and the number of faulty light-emitting units corresponding to the current threshold ranges. The control component determines the number of faulty light-emitting units in the light-emitting module based on the currents of the plurality of light-emitting units in each detected light-emitting module, including:

[0042] The control component determines the operating current of the light-emitting module based on the sum of the currents of multiple light-emitting units in each detected light-emitting module; and determines the number of faulty light-emitting units in the light-emitting module based on the operating current of each light-emitting module.

[0043] In some embodiments, the number of faulty light-emitting units in the light-emitting module is negatively correlated with the operating current.

[0044] In some embodiments, the control component determines the number of faulty light-emitting units in the light-emitting module based on the operating current of each light-emitting module, including:

[0045] For each light-emitting module, when the control component determines that the operating current of the light-emitting module is within a target current threshold range among multiple current threshold ranges, the control component determines the target number corresponding to the target current threshold range as the number of faulty light-emitting units in the light-emitting module.

[0046] In some embodiments, the control component also has a preset failure rate threshold. The control component determines the failure rate of multiple light-emitting units in the multiple light-emitting modules based on the number of faulty light-emitting units in the multiple light-emitting modules, including:

[0047] The control component determines the failure rate of multiple light-emitting units in the multiple light-emitting modules based on the ratio of the number of faulty light-emitting units in the multiple light-emitting modules to the total number of multiple light-emitting units in the multiple light-emitting modules.

[0048] In some embodiments, the failure rate is negatively correlated with the total number.

[0049] In some embodiments, the control component controls the operating states of all the light-emitting modules according to the failure rate it determines.

[0050] In some embodiments, the control component has a preset failure rate threshold. The control component controls the operating states of all the light-emitting modules, including the steps of:

[0051] Comparing the failure rate with the failure rate threshold;

[0052] Controlling the operating states of the light-emitting modules according to the comparison result.

[0053] In some embodiments, the operating states of the light-emitting module include allowing the light-emitting module to operate and prohibiting the light-emitting module from operating.

[0054] In some embodiments, the comparison result includes that the failure rate is less than the failure rate threshold and the failure rate is greater than or equal to the failure rate threshold.

[0055] In some embodiments, the control component controls the working state of the light-emitting module according to the comparison result, specifically as follows:

[0056] When the failure rate is less than the failure rate threshold, the control component allows the light-emitting module to work;

[0057] When the failure rate is greater than or equal to the failure rate threshold, the control component prohibits the light-emitting module from working.

[0058] In some embodiments, the failure rate threshold is 10%-20%. In some embodiments, the head-mounted light therapy device further includes an alarm component connected to the control component; the method further includes:

[0059] The control component controls whether the alarm component emits an alarm message according to the determined failure rate.

[0060] In some embodiments, the control component has a preset failure rate threshold, and the control component controls whether the alarm component emits an alarm message by comparing the failure rate with the failure rate threshold.

[0061] In some embodiments, the control component controls whether the alarm component emits an alarm message, specifically as follows:

[0062] When the failure rate is less than the failure rate threshold, the control component controls the alarm component not to emit an alarm message;

[0063] When the failure rate is greater than or equal to the failure rate threshold, the control component controls the alarm component to emit an alarm message.

[0064] According to the method for detecting the failure rate of the light-emitting unit in the head-mounted light therapy device according to the embodiment of the present invention, in this method, the control component can determine the number of faulty light-emitting units in the light-emitting module based on the currents of multiple light-emitting units in each light-emitting module, and determine the failure rate of the light-emitting unit based on the number of faulty light-emitting units among the multiple light-emitting units, thereby improving the accuracy of determining the failure rate of the light-emitting unit.

[0065] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 It is a control schematic diagram of a light illumination component in a head-mounted light therapy device provided by an embodiment of the present invention.

[0067] Figure 2 is Figure 1Schematic diagram of controlling one light-emitting module of the light illumination component shown in

[0068] Figure 3 is Figure 1 Schematic diagram of controlling the head-mounted light therapy device shown in

[0069] Figure 4 is Figure 1 Flowchart of the failure rate detection method for the light-emitting unit of the head-mounted light therapy device shown in

[0070] Figure 5 is Figure 1 Flowchart of another failure rate detection method for the light-emitting unit of the head-mounted light therapy device in

[0071] Figure 6 Schematic diagram of the structure of a head-mounted light therapy device provided by an embodiment of the present invention.

[0072] Figure 7 is Figure 6 Schematic block diagram of the connection of each component of the head-mounted light therapy device shown in Detailed implementation manners

[0073] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0074] The head-mounted light therapy device and the failure rate detection method for its light-emitting unit according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0075] The head-mounted light therapy device 100 includes a control component 10 and a plurality of light illumination components 4 controlled by the control component 10. Figure 1 Schematic diagram of controlling the control component 10 and one light illumination component 4 in a head-mounted light therapy device 100 provided by an embodiment of the present invention. As shown in Figure 1 shown, the head-mounted light therapy device 100 includes a control component 10 and two light-emitting modules 20. Each light-emitting module 20 includes a driving circuit 201 and a plurality of light-emitting units 202. The driving ends of the driving circuit 201 are respectively connected to the input ends of the plurality of light-emitting units 202. The plurality of light-emitting units 202 may include a first light-emitting unit 202a, a second light-emitting unit 202b, and a third light-emitting unit 202c connected in parallel, and the first light-emitting unit 202a, the second light-emitting unit 202b, and the third light-emitting unit 202c are all used to emit near-infrared light having the wavelength and pulse frequency required for treatment.

[0076] Among them, each light-emitting unit 202 may include a plurality of light-emitting elements 210 connected in series, and each light-emitting element 210 may include a light-emitting diode. As Figure 2 shown, the first light-emitting unit 202a, the second light-emitting unit 202b, and the third light-emitting unit 202c in the light-emitting module 20 all include 6 light-emitting diodes connected in series. The 6 light-emitting diodes connected in series may emit near-infrared light of the same wavelength or pulse frequency, or may emit near-infrared light of different wavelengths or pulse frequencies.

[0077] The control terminals of the control component 10 are respectively connected to the input terminals of each driving circuit 201. The control component 10 is configured to output a control signal to each driving circuit 201 in response to a detection instruction. The control signal is used to instruct the driving circuit 201 to output a driving current to a plurality of light-emitting units 202 of the corresponding light-emitting module 20. Optionally, the control signal may be a high-level signal.

[0078] A start button (not shown) may be provided on the head-mounted light therapy device 100. After the control component 10 detects a selection operation on the start button (not shown), a detection instruction may be generated. Alternatively, a power-on self-check button (not shown) may be provided on a control handle (not shown) paired with the head-mounted light therapy device 100. After the control component 10 detects a selection operation on the power-on self-check button (not shown), a detection instruction may be generated. Alternatively, the control component 10 may periodically generate a detection instruction automatically.

[0079] Each of the driving circuits 201 outputs a driving current to a plurality of light-emitting units 202 of the corresponding light-emitting module 20 in response to the control signal.

[0080] Reference Figure 1 , the driving circuit 201 outputs driving currents to the first light-emitting unit 202a, the second light-emitting unit 202b, and the third light-emitting unit 202c simultaneously in response to the control signal. Among them, the driving circuit 201 is a constant-current driving chip, and the driving currents output by the driving circuit 201 to the first light-emitting unit 202a, the second light-emitting unit 202b, and the third light-emitting unit 202c may be the same.

[0081] Reference Figure 3 , the control component 10 may include a main control circuit 101 and a plurality of signal transmission circuits 102. The plurality of signal transmission circuits 102 correspond to the plurality of driving circuits 201 one by one. Figure 3 shows 14 signal transmission circuits 102 and 14 light-emitting modules 20. Optionally, the main control circuit 101 may be a micro controller unit (MCU), and the signal transmission circuit 102 may be an input / output (I / O) circuit.

[0082] The control terminals of the main control circuit 101 are respectively connected to the input terminals of a plurality of signal transmission circuits 102, and the main control circuit 101 is configured to output a control signal to a corresponding driving circuit 201 through each signal transmission circuit 102.

[0083] Exemplarily, if the control signal is a high-level signal, the main control circuit 101 can output a high-level signal to a corresponding driving circuit 201 through the corresponding signal transmission circuit 102, and the driving circuit 201 can respond to the high-level signal and output a driving current to a corresponding plurality of light-emitting units 202.

[0084] Reference Figure 3 , the control component 10 may further include a current detection circuit 103. The current detection circuit 103 has a detection terminal R. One end of the detection terminal R is connected to the input terminal of the main control circuit 101, and the other end is connected to the output terminals of a plurality of light-emitting units 202 in each light-emitting module 20 ( Figure 3 The connection relationship between the plurality of light-emitting units 202 in each light-emitting module 20 and the current detection circuit 103 is not shown). The current detection circuit 103 is configured to detect the current of each light-emitting module 20 and send the detected current of each light-emitting module 20 to the main control circuit 101.

[0085] Wherein, the current detection circuit 103 has a plurality of detection terminals R, and the plurality of detection terminals R are respectively connected to the output terminals of each light-emitting unit 202 in a plurality of light-emitting modules 20 in a one-to-one correspondence.

[0086] Reference Figure 2 , each light-emitting module 20 may further include a plurality of resistors R, and the plurality of resistors R respectively correspond to the plurality of light-emitting units 202 in the light-emitting module 20. Wherein, one end of each resistor R is connected to the output terminal of the corresponding light-emitting unit 202, and the other end of each resistor R is connected to the ground terminal GND. The resistor R is used for voltage division. Specifically, each light-emitting module 20 may include 3 resistors R and 3 light-emitting units 202, and the 3 resistors R are respectively connected to the 3 light-emitting units 202 in a one-to-one correspondence.

[0087] Each driving circuit 201 may further have a detection terminal and an output terminal. The detection terminal of the driving circuit 201 is connected to the output terminals of all the light-emitting units 202 of the corresponding light-emitting module 20, and the output terminal of the driving circuit 201 is connected to the input terminal of the control component 10.

[0088] Reference Figure 3 , the control component 10 may further include a status detection circuit 104. One end of the status detection circuit 104 is connected to the input terminal of the main control circuit 101, and the other end is connected to the output terminal of each driving circuit 201 ( Figure 3(The connection relationship between the status detection circuit 104 and each driving circuit 201 is not shown). When the status detection circuit 104 detects an abnormality in the light-emitting module 20, it outputs an invalid signal to the control component 10, and the control component 10 outputs a control signal to start fault detection; when the status detection circuit 104 detects that the light-emitting module 20 is working properly, it outputs a valid signal to the control component 10.

[0089] Each driving circuit 201 outputs an invalid signal or a valid signal to the main control circuit 101 through the status detection circuit 104.

[0090] Among them, the valid signal can be a high-level signal or a low-level signal relative to the invalid signal. If the valid signal is a high-level signal relative to the invalid signal, the valid signal can be represented by 1 and the invalid signal can be represented by 0.

[0091] Reference Figure 1 and Figure 2 , the current detection circuit 103 is connected to the detection terminal R of the control component 10, and the detection terminal R of the control component 10 is connected to the voltage VCC in the light-emitting module 20. Among them, multiple current threshold ranges and the number of faulty light-emitting units 202 corresponding to each current threshold range are pre-stored in the control component 10. The current of the voltage VCC is the sum of the currents of the three-way light-emitting units 202 in the light-emitting module 20. The control component 10 determines the number of faulty light-emitting units 202 in the light-emitting module 20 by identifying the value of the current of the voltage VCC and determining the current threshold range into which the current value falls. And based on the number of faulty light-emitting units 202 in the multiple light-emitting modules 20, the failure rate of the multiple light-emitting units 202 in the multiple light-emitting modules 20 is determined.

[0092] Among them, the failure rate is positively correlated with the number of faults, that is, the more the number of faulty light-emitting units 202 in the multiple light-emitting modules 20, the higher the failure rate; the fewer the number of faulty light-emitting units 202 in the multiple light-emitting modules 20, the lower the failure rate.

[0093] During the process of each driving circuit 201 outputting a driving current to the corresponding multiple light-emitting units 202, the control component 10 can detect the current of each light-emitting module 20 and determine the number of faulty light-emitting units 202 in the light-emitting module 20 by judging the current threshold range into which the current falls.

[0094] In the embodiment of the present invention, the control component 10 has multiple detection terminals R, and the multiple detection terminals R are connected to the voltage VCC in the multiple light-emitting modules 20 in a one-to-one correspondence.

[0095] For example, reference Figure 1, the control component 10 has 2 detection terminals R, and 2 light-emitting modules 20 include 6 light-emitting units 202. One end of each detection terminal R is connected to the voltage VCC of the corresponding 1 light-emitting module 20 to detect the current of the light-emitting module 20.

[0096] In summary, the embodiment of the present invention provides a head-mounted light therapy device 100. The control component 10 in the head-mounted light therapy device 100 can determine the number of faulty light-emitting units 202 in the light-emitting module 20 based on the current of each light-emitting module 20, and determine the failure rate of the light-emitting unit 202 based on the number of faulty light-emitting units 202 among the multiple light-emitting units 202.

[0097] Compared with the prior art, the control component can only determine whether the light-emitting module fails, but cannot determine the number of faulty light-emitting units 202 in the light-emitting module. Since the control component 10 in the head-mounted light therapy device 100 provided by the embodiment of the present invention can determine the failure rate of the light-emitting unit 202 based on the number of faulty light-emitting units 202 in the multiple light-emitting modules 20, the accuracy of determining the failure rate of the light-emitting unit 202 is effectively improved, the service life of the head-mounted light therapy device 100 is increased, and the probability of the head-mounted light therapy device 100 being returned to the factory is reduced.

[0098] In the embodiment of the present invention, after the control component 10 detects the current of each light-emitting module 20, it determines the current of the light-emitting module 20 as the working current of the light-emitting module 20, and determines the number of faulty light-emitting units 202 in the light-emitting module 20 based on the working current of the light-emitting module 20.

[0099] Among them, the number of faulty light-emitting units 202 in the light-emitting module 20 is negatively correlated with the working current of the light-emitting module 20. That is, the more the number of faulty light-emitting units 202 in the light-emitting module 20, the smaller the working current of the light-emitting module 20; the fewer the number of faulty light-emitting units 202 in the light-emitting module 20, the larger the working current of the light-emitting module 20.

[0100] For example, if the light-emitting module 20 includes a first light-emitting unit 202a, a second light-emitting unit 202b, and a third light-emitting unit 202c, and the rated current of the first light-emitting unit 202a, the second light-emitting unit 202b, and the third light-emitting unit 202c is 60 (mA), then the control component 10 can determine the sum of the currents of the first light-emitting unit 202a, the second light-emitting unit 202b, and the third light-emitting unit 202c, which is 180 mA, as the maximum value of the current threshold of the light-emitting module 20.

[0101] In an embodiment of the present invention, after the control component 10 determines the operating current of each light-emitting module 20, for each light-emitting module 20, when the operating current of the light-emitting module 20 is within a target current threshold range among a plurality of current threshold ranges, the target number corresponding to the target current threshold range can be determined as the number of faulty light-emitting units 202 in the light-emitting module 20.

[0102] For each light-emitting module 20, after the control component 10 determines the operating current of the light-emitting module 20, it can determine the target current threshold range in which the operating current of the light-emitting module 20 is located, and based on the target current threshold range, it can determine the target number corresponding to the target current threshold range from the corresponding relationship, and then the target number can be determined as the number of faulty light-emitting units 202 in the light-emitting module 20.

[0103] It can be understood that since there may be a certain error between the current of the light-emitting module 20 detected by the control component 10 and the rated current of the light-emitting module 20, by setting the error current, the accuracy of determining the current threshold range in which the operating current of the light-emitting module 20 is located can be effectively ensured, and then the accuracy of determining the number of faulty light-emitting units 202 in the light-emitting module 20 can be effectively improved.

[0104] The j-th current threshold range among the plurality of current threshold ranges is [I jmin , I jmax , where j is a positive integer and less than or equal to the total number n of all light-emitting units 202 in each light-emitting module 20, that is, 0 ≤ j ≤ n; I jmin = (j - 1 - h) × I 参考 ; I jmax = (j - 1 + h) × I 参考 ; I 参考 is the current when each light-emitting unit 202 in each light-emitting module 20 works normally; h is the current error coefficient. When I jmin is negative, 0 is taken as I jmin . Taking the normal operating current of each light-emitting unit 202 as 60 mA, each light-emitting module 20 having 3 light-emitting units 202 and the current error coefficient h as 5% as an example.

[0105] Assume that the light-emitting module 20 includes three light-emitting units 202, namely a first light-emitting unit 202a, a second light-emitting unit 202b, and a third light-emitting unit 202c. Table 1 shows the corresponding relationship between 4 current threshold ranges and the number of faulty light-emitting units 202 in 4 light-emitting modules 20. If the rated currents of the first light-emitting unit 202a, the second light-emitting unit 202b, and the third light-emitting unit 202c are all 60 mA, that is, the rated operating current of the light-emitting module 20 is 180 mA. Then, the control component 10 can determine through Table 1 that if the operating current of the detected light-emitting module 20 is within [180 mA - 3 mA, 180 mA + 3 mA], it can be determined that the number of faulty light-emitting units 202 in the light-emitting module 20 is 0, that is, none of the 3 light-emitting units 202 in the light-emitting module 20 are faulty.

[0106] If the detected operating current of the light-emitting module 20 is 120 mA, then the control component 10 can determine through Table 1 that the light-emitting module 20 falls within the current threshold of [120 mA - 3 mA, 120 mA + 3 mA], and further determine that the number of faulty light-emitting units 202 in the light-emitting module 20 is 1.

[0107] If the detected operating current of the light-emitting module 20 is 60 mA, then the control component 10 can determine through Table 1 that it falls within the current threshold of [60 mA - 3 mA, 60 mA + 3 mA], and further determine that the number of faulty light-emitting units 202 in the light-emitting module 20 is 2.

[0108] If the detected operating current of the light-emitting module 20 is 0 mA, then the control component 10 can determine through Table 1 that it falls within the current threshold of [0, 3 mA], and further determine that the number of faulty light-emitting units 202 in the light-emitting module 20 is 3, that is, all 3 light-emitting units 202 in the light-emitting module 20 are faulty.

[0109] Table 1

[0110] Current threshold range Number of faulty light-emitting units in the light-emitting module [180 mA - 3 mA, 180 mA + 3 mA] 0 [120 mA - 3 mA, 120 mA + 3 mA] 1 [60 mA - 3 mA, 60 mA + 3 mA] 2 [0 mA, 3 mA] 3

[0111] After the control component 10 determines the number of faulty light-emitting units 202 in each light-emitting module 20, it can determine the sum of the number of faulty light-emitting units 202 in multiple light-emitting modules 20 as the number of faults of the faulty light-emitting units 202 in multiple light-emitting modules 20. Furthermore, the control component 10 can determine the failure rate of the multiple light-emitting units 202 in multiple light-emitting modules 20 based on the ratio of the number of faults of the faulty light-emitting units 202 in multiple light-emitting modules 20 to the total number of multiple light-emitting units 202 in multiple light-emitting modules 20.

[0112] Among them, when the number of faults is the same, the failure rate is negatively correlated with the total number. That is, when the number of faults is the same, the larger the total number, the smaller the failure rate, and the smaller the total number, the larger the failure rate. Moreover, in the control component 10, the total number of the light-emitting units, the rated operating current of the light-emitting units 202 of each light-emitting module 20, the current error coefficient, the current threshold ranges, and the number of faulty light-emitting units 202 corresponding to the current threshold ranges can be pre-stored.

[0113] For example, if the head-mounted light therapy device 100 includes 14 light-emitting modules 20, and each light-emitting module 20 includes a total of 3 light-emitting units 202, namely a first light-emitting unit 202a, a second light-emitting unit 202b, and a third light-emitting unit 202c, then the total number of the light-emitting units 202 in the multiple light-emitting modules 20 pre-stored in the control component 10 is 14×3 = 42.

[0114] Optionally, the control component 10 can determine the failure rate T of the light-emitting units 202 in the multiple light-emitting modules 20 according to the number of faulty light-emitting units 202 k that occur in the received multiple light-emitting modules 20 and the total number W of the light-emitting units 202 in the multiple light-emitting modules 20. That is, the failure rate T can be obtained by the following formula:

[0115] Assume that the head-mounted light therapy device includes 14 light-emitting modules 20, and each light-emitting module 20 includes 3 light-emitting units 202. If 1 light-emitting unit 202 fails in each of the 3 light-emitting modules 20, that is, a total of 3 light-emitting units 202 fail, then the actual failure rate of the 42 light-emitting units 202 in the 14 light-emitting modules is

[0116] In the related prior art, after the control component 10 determines that 3 light-emitting modules 20 fail, it will determine that all the light-emitting units 202 in the 3 light-emitting modules 20 fail, that is, 9 light-emitting units 202 fail. Based on this, the failure rate determined by the control component 10 is Since the failure rate of 21% determined by the control component 10 is much greater than the actual failure rate of 7%, the accuracy of detecting the failure rate of the light-emitting units 202 is relatively low. However, the failure rate determined by the control component 10 in the head-mounted light therapy device 100 provided by the embodiment of the present invention is 7%. Since it can determine the number of faulty light-emitting units 202 that occur in the multiple light-emitting modules 20 and determine the failure rate of the light-emitting units 202 based on the number of faults, compared with the related art, the accuracy of determining the failure rate of the light-emitting units 202 is effectively improved.

[0117] Reference Figure 3, the head-mounted light therapy device 100 may further include an alarm component 30 connected to the control component 10. The control component 10 is further configured to control the alarm component 30 to send an alarm message when it detects that the failure rate is greater than or equal to the failure rate threshold. When it detects that the failure rate is less than the failure rate threshold, there is no need to send an alarm message.

[0118] Wherein, the alarm message is used to prompt the user to repair the light-emitting unit 202 in time. The failure rate threshold may be pre-stored in the control component 10. Optionally, the failure rate threshold may be 10%-20%.

[0119] In the embodiment of the present invention, after the control component 10 determines the failure rate, it may determine whether the failure rate is greater than or equal to the failure rate threshold. When the failure rate is greater than or equal to the failure rate threshold, the control component 10 may determine that the failure rate of the light-emitting unit 202 in the head-mounted light therapy device 100 is relatively high, and the optical power of the near-infrared light emitted by the head-mounted light therapy device 100 is relatively low, and the treatment effect cannot be achieved at this time. Then the control component 10 may send an alarm message through the alarm component 30. Thereby enabling the user to repair the light-emitting unit 202 in the head-mounted light therapy device 100 in time to ensure the treatment effect of the head-mounted light therapy device 100.

[0120] When the failure rate is less than the failure rate threshold, the control component 10 may determine that the failure rate of the light-emitting unit 202 in the head-mounted light therapy device 100 is relatively low, and the optical power of the near-infrared light emitted by the head-mounted light therapy device 100 is relatively high, and the treatment effect can be achieved. Then the control component 10 does not need to send an alarm message through the alarm component 30.

[0121] The alarm message may include at least one of text information, audio information, and light information. For example, the text information may be "The failure rate of the lamp beads is relatively high. Please repair in time."

[0122] Reference Figure 3 , the head-mounted light therapy device 100 may further include a serial communication unit 40 connected to the main control circuit 101. The serial communication unit 40 is used to connect to a host computer (not shown). The host computer (not shown) is used to send a control instruction to the main control circuit 101 through the serial communication unit 40. The control instruction may include a shutdown instruction, etc. Optionally, the host computer (not shown) may control a handle, and the control handle is also connected to a power adapter.

[0123] The head-mounted light therapy device 100 may further include a power supply circuit 50 connected to the main control circuit 101. The power supply circuit 50 is used to supply power to the main control circuit 101.

[0124] The head-mounted light therapy device 100 may further include a memory 60 connected to the main control circuit 101. The main control circuit 101 is configured to send and store data in the memory 60. The data may include the failure rate of the light-emitting units 202, the total number of light-emitting units 202 in each light-emitting module 20, the rated operating current of each light-emitting unit 202, the current error coefficient, the current threshold ranges, and the number of faulty light-emitting units 202 corresponding to the current threshold ranges, etc.

[0125] The head-mounted light therapy device 100 may further include an ADC (analog to digital convert) circuit 70 connected to the main control circuit 101. The ADC circuit 70 is configured to convert the analog signal sent by the main control circuit 101 into a digital signal.

[0126] Reference Figure 6 and Figure 7 As shown in and, the head-mounted light therapy device 100 includes a front housing 2, an upper housing 1, a rear housing 3 that jointly cover and fit the treatment area of the patient's head, and a plurality of light irradiation components 4 disposed in the upper housing 1, the front housing 2, and the rear housing 3 to perform light irradiation treatment on the treatment area of the patient's head. The upper housing 1 at least covers the top area of the patient's head, the front housing 2 at least covers the facial areas such as the forehead, eyes, and left and right temples of the patient's head, and the rear housing 3 at least covers the back brain area of the patient's head. A main control board 5 for controlling all the light irradiation components 4 is further disposed in the upper housing 1, and an upper adapter board 6 respectively connected to the main control board 5 and the light irradiation components 4 located in the upper housing 2. The main control board 5 corresponds to the control component 10 described above, and the main control circuit 101, the current detection circuit 103, the state detection circuit 104, the ADC circuit 70, the memory 60, the alarm component 30, and the serial port communication unit 40 described above are integrally provided on the main control board 5. The signal transmission circuit 102 located in the upper housing 1 is integrally provided on the upper adapter board 6. A front adapter board 7 respectively connected to the main control board 5 and the light irradiation components 4 located in the front housing 2 is disposed in the front housing 2. The signal transmission circuit 102 located in the front housing 2 is integrally provided on the front adapter board 7. A rear adapter board 8 respectively connected to the main control board 5 and the light irradiation components 4 located in the rear housing 3 and a power supply board 9 for supplying power to the main control board 5 are disposed in the rear housing 3. The signal transmission circuit 102 located in the rear housing 3 is integrally provided on the rear adapter board 8, and the power supply board 9 corresponds to the power supply circuit 50 described above. The light irradiation component 4 includes the two driving circuits 201 described above and the corresponding two light-emitting modules 20.

[0127] In summary, the embodiment of the present invention provides a head-mounted light therapy device 100. The control component 10 in the head-mounted light therapy device 100 can determine the number of faulty light-emitting units 202 in the light-emitting module 20 based on the current of multiple light-emitting units 202 in each detected light-emitting module 20, and determine the failure rate of the light-emitting units 202 based on the number of faulty light-emitting units 202 among the multiple light-emitting units 202.

[0128] Compared with the control component in the prior art that can only determine whether a light-emitting module fails, but cannot determine the number of faulty light-emitting units 202 in the light-emitting module. Since the control component 10 in the head-mounted light therapy device 100 provided by the embodiment of the present invention can determine the failure rate of the light-emitting units 202 based on the number of faulty light-emitting units 202 in multiple light-emitting modules 20, the accuracy of determining the failure rate of the light-emitting units 202 is effectively improved, the service life of the head-mounted light therapy device 100 is increased, and the probability of the head-mounted light therapy device 100 being returned to the factory is reduced.

[0129] Figure 4 It is a flowchart of a method for detecting the failure rate of the light-emitting units 202 in a head-mounted light therapy device 100 provided by an embodiment of the present invention. This method can be applied to Figures 1 to 3 any of the head-mounted light therapy devices 100. As Figure 4 shown, this method includes:

[0130] Step 401: In response to a detection instruction, the control component 10 outputs a control signal to each drive circuit 201.

[0131] Step 402: In response to the control signal, each drive circuit 201 outputs a drive current to multiple light-emitting units 202 of each light-emitting module 20.

[0132] Step 403: The control component 10 also determines the number of faulty light-emitting units 202 in the light-emitting module 20 based on the current detected for each light-emitting module 20, and determines the failure rate of multiple light-emitting units 202 in multiple light-emitting modules 20 based on the number of faulty light-emitting units 202 among the multiple light-emitting modules 20.

[0133] Among them, the failure rate is positively correlated with the number of faults.

[0134] The specific method for determining the number of faulty light-emitting units 202 in the light-emitting module 20 in step 403 is as follows: After the control component 10 detects and obtains the working current of each light-emitting module 20, it determines that the working current of the light-emitting module 20 is within a certain current threshold range among multiple preset current threshold ranges in the control component 10, and determines the number of faulty light-emitting units 202 in the light-emitting module 20 based on the number corresponding to this current threshold range.

[0135] In step 403, the specific method for determining the failure rate of multiple light-emitting units 202 in multiple light-emitting modules 20 is as follows: After the control component 10 determines the number of faulty light-emitting units 202 in each light-emitting module 20, it can determine the total number of faulty light-emitting units 202 in multiple light-emitting modules 20 as the sum of the number of faulty light-emitting units 202 in multiple light-emitting modules 20. Furthermore, the control component 10 can determine the failure rate of multiple light-emitting units 202 in multiple light-emitting modules 20 based on the total number of faulty light-emitting units 202 in multiple light-emitting modules 20 and the total number of multiple light-emitting units 202 in multiple light-emitting modules 20.

[0136] In summary, the embodiment of the present invention provides a method for detecting the failure rate of the light-emitting unit 202 in the head-mounted light therapy device 100. In this method, the control component 10 can, based on the current of each detected light-emitting module 20, determine the number of faulty light-emitting units 202 in the light-emitting module 20 by judging the current threshold range into which the current falls, and determine the failure rate of the light-emitting unit 202 based on the total number of faulty light-emitting units 202 among multiple light-emitting units 202 of multiple light-emitting modules 20.

[0137] Compared with the prior art in which the control component can only determine whether a light-emitting module fails, but cannot determine the number of faulty light-emitting units 202 in the light-emitting module. Since the control component 10 in the head-mounted light therapy device 100 provided by the embodiment of the present invention can determine the failure rate of the light-emitting unit 202 based on the number of faulty light-emitting units 202 in multiple light-emitting modules 20, the accuracy of determining the failure rate of the light-emitting unit 202 is effectively improved.

[0138] Figure 5 is a flowchart of another method for detecting the failure rate of the light-emitting unit 202 in the head-mounted light therapy device provided by the embodiment of the present invention. This method can be applied to Figures 1 to 3 any one of the head-mounted light therapy devices 100. As Figure 5 shown, this method may include:

[0139] Step 501, the control component 10 outputs a control signal to each driving circuit 201 in response to a detection instruction.

[0140] Step 502, each driving circuit 201 outputs a driving current to multiple light-emitting units 202 of each light-emitting module 20 in response to the control signal.

[0141] Step 503: The control component 10 also determines the operating current of the detected light-emitting module 20 based on the current of each detected light-emitting module 20, and determines the number of faulty light-emitting units 202 in the light-emitting module 20 based on the operating current of each light-emitting module 20.

[0142] Wherein, the number of faulty light-emitting units 202 in the light-emitting module 20 is negatively correlated with the operating current.

[0143] For each light-emitting module 20, the control component 10 determines the number of faulty light-emitting units 202 in the light-emitting module 20 according to the operating current of the detected light-emitting module 20 stored therein within a certain current threshold range among multiple current threshold ranges, and the target number corresponding to the current threshold range.

[0144] Step 504: The control component 10 determines the failure rate of the multiple light-emitting units 202 in the multiple light-emitting modules 20 based on the total number of faulty light-emitting units 202 in the multiple light-emitting modules 20 and the total number of the multiple light-emitting units 202 in the multiple light-emitting modules 20.

[0145] Wherein, the failure rate is positively correlated with the number of faults and negatively correlated with the total number; the failure rate is the ratio of the total number of faulty light-emitting units 202 to the total number of all light-emitting units 202.

[0146] Step 505: When the control component 10 detects that the failure rate is greater than or equal to the failure rate threshold, it controls the alarm component 30 to send an alarm message; when the control component 10 detects that the failure rate is less than the failure rate threshold, it controls the alarm component 30 not to send an alarm message.

[0147] In the embodiment of the present invention, the failure rate threshold may be pre-stored in the control component 10. Optionally, the failure rate threshold may be 10%-20%. After determining the failure rate, the control component 10 can determine whether the detected failure rate is greater than or equal to the failure rate threshold. When the failure rate is greater than or equal to the failure rate threshold, the control component 10 can determine that the failure rate of the light-emitting units 202 in the head-mounted light therapy device 100 is relatively high, and the light power of the near-infrared light emitted by the head-mounted light therapy device 100 is relatively low, and the treatment effect cannot be achieved at this time. Then the control component 10 can send an alarm message through the alarm component 30. This enables the user to repair the light-emitting units 202 in the head-mounted light therapy device 100 in time to ensure the treatment effect of the head-mounted light therapy device 100.

[0148] When the failure rate is less than the failure rate threshold, the control component 10 can determine that the failure rate of the light-emitting unit 202 in the head-mounted phototherapy device 100 is relatively low, the optical power of the near-infrared light emitted by the head-mounted phototherapy device 100 is relatively high, and the treatment effect can be achieved. Then, the control component 10 does not need to send an alarm message through the alarm component 30.

[0149] The alarm message can include at least one of a text message, an audio message, and a light information. By way of example, the text message can be "The failure rate of the lamp beads is relatively high. Please repair them in time."

[0150] It should be noted that the specific implementation manners of the above steps 401 to 403 and the above steps 501 to 505 can refer to the above device embodiments, and will not be repeated in the embodiments of the present invention.

[0151] In summary, the embodiments of the present invention provide a method for detecting the failure rate of the light-emitting unit 202 in a head-mounted phototherapy device 100. In this method, the control component 10 can determine the number of faulty light-emitting units 202 in the light-emitting module 20 based on the operating currents of multiple light-emitting units 202 in each light-emitting module 20 detected, and determine the failure rate of the light-emitting unit 202 based on the number of faulty light-emitting units 202 among the multiple light-emitting units 202.

[0152] Compared with the prior art in which the control component can only determine whether a light-emitting module fails, but cannot determine the number of faulty light-emitting units 202 in the light-emitting module. Since the control component 10 in the head-mounted phototherapy device 100 provided by the embodiments of the present invention can determine the failure rate of the light-emitting unit 202 based on the number of faulty light-emitting units 202 in multiple light-emitting modules 20, the accuracy of determining the failure rate of the light-emitting unit 202 is effectively improved.

[0153] Note that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in combination with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in combination with an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection part with one or more wirings (electronic device), a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or other suitable processing as necessary, and then stored in a computer memory.

[0154] It should be understood that various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having suitable combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0155] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0156] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0157] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A head-mounted light therapy device, characterized in that, The head-mounted light therapy device includes: a control component and a plurality of light-emitting modules controlled by the control component. Each light-emitting module includes: a driving circuit and a plurality of light-emitting units, and the driving ends of the driving circuit are respectively connected to the input ends of the plurality of light-emitting units; Wherein, the control ends of the control component are respectively connected to the input ends of each driving circuit, and the control component outputs a control signal to each driving circuit in response to a detection instruction; Each driving circuit outputs a driving current to the plurality of light-emitting units of the corresponding light-emitting module in response to the control signal; The detection end of the control component is connected to the voltage VCC in the light-emitting module. The current of the voltage VCC is the total working current of the plurality of light-emitting units in the light-emitting module. The control component determines the number of faulty light-emitting units in the light-emitting module by identifying the current value of the voltage VCC, and determines the failure rate of the plurality of light-emitting units in the plurality of light-emitting modules based on the number of faulty light-emitting units in the plurality of light-emitting modules.

2. The head-mounted light therapy device according to claim 1, characterized in that, The control component has a plurality of preset current threshold ranges and the number of faulty light-emitting units corresponding to the current threshold ranges. The control component is further configured to: Determine the working current of the light-emitting module based on the sum of the currents of the plurality of light-emitting units in each detected light-emitting module; Determine the number of faulty light-emitting units in each light-emitting module based on the working current of each light-emitting module.

3. The head-mounted light therapy device according to claim 2, characterized in that, The control component is further configured to: For each light-emitting module, when the working current of the light-emitting module is within the target current threshold range among the plurality of current threshold ranges, the target number corresponding to the target current threshold range is determined as the number of faulty light-emitting units in the light-emitting module.

4. The head-mounted light therapy device according to claim 3, characterized in that, The lower limit value I of the j-th current threshold range among the multiple current threshold ranges jmin satisfies: I jmin =(j - 1 - h)×I 参考 , and the upper limit value I of the j-th current threshold range jmax satisfies: I jmax =(j - 1 + h)×I 参考 ; Wherein, j is a positive integer and less than or equal to the total number n of all the light-emitting units 202 in each light-emitting module 20, that is, 0≤j≤n; I 参考 is the current when each light-emitting unit 202 in each light-emitting module 20 operates normally; h is the current error coefficient.

5. The head-mounted light therapy device according to claim 4, characterized in that, When I jmin is negative, take 0 as I jmin .

6. The head-mounted light therapy device according to claim 5, characterized in that, The current error coefficient h is 5%.

7. The head-mounted light therapy device according to any one of claims 1 to 6, characterized in that, The control component is further configured to: Determine the failure rate of the plurality of light-emitting units in the plurality of light-emitting modules based on the ratio of the number of faulty light-emitting units in the plurality of light-emitting modules to the total number of the plurality of light-emitting units in the plurality of light-emitting modules.

8. The head-mounted light therapy device according to any one of claims 1 to 6, characterized in that, The control component further includes: a main control circuit and a plurality of signal transmission circuits, and the plurality of signal transmission circuits are respectively connected to the plurality of driving circuits in one-to-one correspondence; The control ends of the main control circuit are respectively connected to the input ends of the plurality of signal transmission circuits, and the main control circuit is configured to output the control signal to a corresponding driving circuit through each signal transmission circuit.

9. The head-mounted light therapy device according to claim 8, characterized in that, The control component further includes: a current detection circuit; The detection ends of the current detection circuit are respectively connected to the input end of the main control circuit and the output ends of the plurality of light-emitting units in each light-emitting module, and the current detection circuit is configured to send the detected currents of the plurality of light-emitting units in each light-emitting module to the main control circuit; The main control circuit is further configured to determine the number of faulty light-emitting units in each light-emitting module based on the currents of the multiple light-emitting units in each light-emitting module, and determine the failure rate of the multiple light-emitting units in the multiple light-emitting modules based on the number of faulty light-emitting units in the multiple light-emitting modules.

10. The head-mounted light therapy device according to any one of claims 1 to 6, characterized in that, The control component also has a preset failure rate threshold, and the head-mounted light therapy device further includes: an alarm component connected to the control component; The control component is further configured to send an alarm message through the alarm component when the failure rate is greater than or equal to the failure rate threshold.

11. The head-mounted light therapy device according to any one of claims 1 to 6, characterized in that, Each light-emitting module further includes: a plurality of resistors, and the plurality of resistors are respectively in one-to-one correspondence with the multiple light-emitting units in the light-emitting module; Wherein, one end of each resistor is connected to the output end of the corresponding light-emitting unit, and the other end of each resistor is connected to the ground terminal.

12. The head-mounted light therapy device according to any one of claims 1 to 6, characterized in that, Each light-emitting unit includes a plurality of serially connected light-emitting elements.

13. The head-mounted light therapy device according to claim 12, characterized in that,Each light-emitting element includes a light-emitting diode.

14. The head-mounted light therapy device according to any one of claims 1 to 6, wherein, The control component is further configured to generate the detection instruction in response to a start operation for the head-mounted light therapy device.

15. The head-mounted light therapy device according to any one of claims 1 to 6, wherein, The control component is further configured to generate the detection instruction in response to a failure rate detection operation for the light-emitting unit.

16. The head-mounted light therapy device according to any one of claims 1 to 6, wherein, The control component is further configured to generate the detection instruction periodically.

17. A method for detecting the failure rate of a light-emitting unit in a head-mounted light therapy device, wherein, The head-mounted light therapy device includes: a control component and a plurality of light-emitting modules. Each light-emitting module includes: a driving circuit and a plurality of light-emitting units. The driving ends of the driving circuit are respectively connected to the input ends of each light-emitting unit. The input end of the driving circuit is connected to the control end of the control component. The output ends of the multiple light-emitting units are connected to the detection end of the control component; The method includes: The control component outputs a control signal to each driving circuit in response to the detection instruction; Each driving circuit outputs a driving current to the light-emitting units of each light-emitting module respectively in response to the control signal; The control component is further configured to determine the number of faulty light-emitting units in each light-emitting module based on the sum of the currents of the multiple light-emitting units in each detected light-emitting module, and determine the failure rate of the multiple light-emitting units in the multiple light-emitting modules according to the number of faulty light-emitting units in the multiple light-emitting modules.

18. The method according to claim 17, wherein, The failure rate is positively correlated with the number of faults.

19. The method according to claim 17, wherein, The control component has a preset plurality of current threshold ranges and the number of faulty light-emitting units corresponding to the current threshold ranges. The control component determines the number of faulty light-emitting units in each light-emitting module based on the currents of the multiple light-emitting units in each detected light-emitting module, including: The control component determines the working current of each light-emitting module based on the sum of the currents of the multiple light-emitting units in each detected light-emitting module; and determines the number of faulty light-emitting units in each light-emitting module based on the working current of each light-emitting module.

20. The method according to claim 19, wherein, The number of faulty light-emitting units in the light-emitting module is negatively correlated with the working current.

21. The method according to claim 19, wherein, The control component determines the number of faulty light-emitting units in each light-emitting module based on the working current of each light-emitting module, including: For each of the light-emitting modules, when the control component determines that the operating current of the light-emitting module is within a target current threshold range among a plurality of current threshold ranges, the control component determines the target number corresponding to the target current threshold range as the number of faulty light-emitting units in the light-emitting module.

22. The method according to any one of claims 17 to 18, wherein, The control component also has a preset failure rate threshold. The control component determines the failure rate of a plurality of light-emitting units in the plurality of light-emitting modules based on the number of faulty light-emitting units in the plurality of light-emitting modules, including: The control component determines the failure rate of a plurality of light-emitting units in the plurality of light-emitting modules based on the ratio of the number of faulty light-emitting units in the plurality of light-emitting modules to the total number of a plurality of light-emitting units in the plurality of light-emitting modules.

23. The method according to claim 22, wherein, The failure rate is negatively correlated with the total number.

24. The method according to claim 22, wherein, The control component controls the operating states of all the light-emitting modules according to the failure rate it determines.

25. The method according to claim 24, wherein, The control component has a preset failure rate threshold. The control component controls the operating states of all the light-emitting modules including the steps of: Comparing the failure rate with the failure rate threshold; Controlling the operating states of the light-emitting modules according to the comparison result.

26. The method according to claim 25, wherein, The operating states of the light-emitting modules include allowing the light-emitting module to operate and prohibiting the light-emitting module from operating.

27. The method according to claim 25, wherein, The comparison results include that the failure rate is less than the failure rate threshold and the failure rate is greater than or equal to the failure rate threshold.

28. The method according to claim 25, wherein, The control component controls the operating states of the light-emitting modules according to the comparison result specifically as: When the failure rate is less than the failure rate threshold, the control component allows the light-emitting module to operate; When the failure rate is greater than or equal to the failure rate threshold, the control component prohibits the light-emitting module from operating.

29. The method according to claim 25, wherein, The failure rate threshold is 10%-20%.

30. The method according to claim 17, wherein, The head-mounted light therapy device further includes an alarm component connected to the control component; the method further includes: The control component controls whether the alarm component emits an alarm message according to the determined failure rate.

31. The method according to claim 30, wherein, The control component has a preset failure rate threshold. The control component controls whether the alarm component emits an alarm message by comparing the failure rate with the failure rate threshold.

32. The method according to claim 31, wherein, The control component controls whether the alarm component emits an alarm message specifically as: When the failure rate is less than the failure rate threshold, the control component controls the alarm component not to emit an alarm message; When the failure rate is greater than or equal to the failure rate threshold, the control component controls the alarm component to emit an alarm message.

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