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 of light-emitting units thereof. Each driving circuit in the head-mounted phototherapy instrument responds to any one of a first control signal, a second control signal and a third control signal and can only output driving current to one light-emitting unit. And if one light-emitting unit breaks down, the driving circuit can output a fault signal to the control assembly, so that the number of the fault signals output by the plurality of driving circuits to the control assembly is equal to the number of the light-emitting units which break down in the plurality of light-emitting modules. Therefore, the control assembly can accurately determine the fault rate of the light-emitting unit based on the number of the received fault signals, thereby improving the accuracy of fault rate detection of the light-emitting unit.

Description

Technical Field

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

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

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

[0004] However, the accuracy of the failure rate detection of the light-emitting unit in the head-mounted light therapy device in the related prior art is low. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art to at least a certain extent. To this end, one purpose of the present invention is to provide a head-mounted light therapy device, in which each driving circuit can detect whether each of the three correspondingly connected light-emitting units has a fault, and output a fault signal to the control component when the light-emitting unit fails. The control component can thereby accurately determine the failure rate of the light-emitting units in the multiple light-emitting modules based on the number of fault signals received, thereby improving the accuracy of the fault rate detection of the light-emitting units.

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

[0007] To achieve the above-mentioned purpose, a first aspect of the present invention provides a head-mounted phototherapy device, which includes: a control component and a plurality of light-emitting modules controlled by the control component, each of which includes a driving circuit and a plurality of light-emitting units respectively connected to the driving circuit; the control component is respectively connected to each of the driving circuits and outputs a plurality of control signals to each of the driving circuits in response to a detection instruction, and the plurality of control signals respectively correspond to the plurality of light-emitting units one by one;

[0008] Each of the driving circuits outputs a driving current only to the light-emitting unit corresponding to the control signal in response to a corresponding control signal among the plurality of control signals; and detects and determines whether any of the plurality of light-emitting units fails during the process of outputting the driving current to any of the plurality of light-emitting units, and feeds back an output signal to the control component;

[0009] The control component also determines the failure rate of the light-emitting units in the plurality of light-emitting modules based on the received signal output by the driving circuit.

[0010] In some embodiments, one of the control component or the drive circuit has a preset current threshold, and the drive circuit detects and determines whether any of the multiple light-emitting units has a fault. The specific steps are as follows: when it is detected that any of the light-emitting units has a fault, the drive circuit outputs a fault signal to the control component; when it is detected that any of the light-emitting units has not a fault, the drive circuit outputs a normal signal to the control component.

[0011] In some embodiments, the driving circuit detects and determines whether any of the multiple light-emitting units is faulty by detecting and obtaining a driving current of any of the light-emitting units, comparing the current obtained with a current threshold preset in the control component, and determining whether any of the light-emitting units is faulty based on the comparison result.

[0012] In some embodiments, the driving circuit determines whether any of the light-emitting units has a fault based on the comparison result: when the current of any of the light-emitting units detected and obtained is less than or equal to the current threshold, the driving circuit outputs a fault signal to the control component; when the current of any of the light-emitting units detected and obtained is greater than the current threshold, the driving circuit outputs a normal signal to the control component.

[0013] In some embodiments, each of the control signals includes a valid signal and multiple invalid signals, each of the driving circuits has multiple control terminals corresponding one-to-one to the multiple light-emitting units and connected one-to-one to the control component, and the control component outputs the valid signal to one of the control terminals of each driving circuit in response to the detection instruction, and outputs the invalid signals to the remaining control terminals in the driving circuit respectively; each of the driving circuits outputs the driving current only to one of the multiple light-emitting units corresponding to the control terminal that receives the valid signal output by the control component in response to the valid signal and the invalid signal.

[0014] In some embodiments, each of the driving circuits further has a detection terminal connected to the plurality of light-emitting units in a one-to-one correspondence.

[0015] In some embodiments, each of the light-emitting modules further comprises a plurality of resistors, one end of each of the plurality of resistors is respectively connected to the output ends of the plurality of light-emitting units of the light-emitting module in a one-to-one correspondence, and the other end of each of the resistors is connected to the ground end.

[0016] In some embodiments, each of the light-emitting units includes a plurality of light-emitting elements connected in series, and each of the light-emitting elements includes a light-emitting diode.

[0017] In some embodiments, the control component includes a main control circuit and multiple signal transmission circuits, and the multiple signal transmission circuits are connected to the multiple driving circuits one by one; the main control circuit is connected to the multiple signal transmission circuits respectively; the main control circuit is configured to output the multiple control signals to the corresponding driving circuits through the signal transmission circuit.

[0018] In some embodiments, the control component also includes a status detection circuit connected to the main control circuit and each of the driving circuits; each of the driving circuits outputs a corresponding signal to the status detection circuit after detecting and determining whether any of the multiple light-emitting units has a fault; the status detection circuit outputs the received signal to the main control circuit; the main control circuit determines the failure rate of the light-emitting units in the multiple light-emitting modules based on the received signal transmitted by the status detection circuit.

[0019] In some embodiments, an alarm component connected to the control component is also included; the control component controls whether the alarm component issues an alarm message based on the failure rate.

[0020] In some embodiments, the control component has a preset failure rate threshold, and the control component determines the failure rate of the light-emitting units in the multiple light-emitting modules based on the ratio of the number of the fault signals received to the total number of the light-emitting units in the multiple light-emitting modules; and compares the failure rate with the failure rate threshold, and controls the working status of all the light-emitting modules according to the comparison result.

[0021] In some embodiments, the control component controls the working status of all the light-emitting modules according to the comparison result: when the failure rate is less than the failure rate threshold, the light-emitting module is allowed to work; when the failure rate is greater than or equal to the failure rate threshold, the light-emitting module is prohibited from working.

[0022] In some embodiments, the failure rate threshold is 10%-20%.

[0023] In some embodiments, the control component is further configured to generate the detection instruction in response to a self-detection operation.

[0024] To achieve the above-mentioned purpose, a second aspect of the present invention provides a method for detecting a failure rate of a light-emitting unit in a head-mounted light therapy device, the method comprising:

[0025] transmitting a detection instruction to the control component;

[0026] The control component outputs a plurality of control signals to each of the drive circuits in response to a detection instruction;

[0027] Each of the driving circuits outputs a driving current to one of the plurality of light-emitting units connected thereto according to the received control signal;

[0028] Each of the driving circuits detects and determines whether any of the plurality of light emitting units connected thereto fails, and outputs a signal to the control component; and

[0029] The control component determines the failure rate of the light-emitting units in the plurality of light-emitting modules based on the number of received output signals of each of the driving circuits.

[0030] In some embodiments, one of the control component or the drive circuit has a preset current threshold, and each drive circuit outputs a signal to the control component specifically as follows: when each drive circuit detects that any of the light-emitting units has a fault, it outputs a fault signal to the control component; when each drive circuit detects that any of the light-emitting units has not a fault, it outputs a normal signal to the control component.

[0031] In some embodiments, each of the driving circuits detects and determines whether any of the plurality of light emitting units connected thereto fails, including the following steps:

[0032] Each of the driving circuits detects the current of the light emitting unit receiving the driving current outputted by the driving circuit;

[0033] Each of the driving circuits compares the current detected and acquired by each of the driving circuits with a current threshold; and

[0034] Each of the driving circuits outputs a corresponding signal to the control component according to the comparison result.

[0035] In some embodiments, each driving circuit outputs a corresponding signal to the control component based on the comparison result: each driving circuit outputs a fault signal to the control component when it detects that the current of any light-emitting unit is less than or equal to the current threshold; each driving circuit outputs a normal signal to the control component when it detects that the current of any light-emitting unit is greater than the current threshold.

[0036] In some embodiments, the failure rate is positively correlated with the number of the failure signals received.

[0037] In some embodiments, each of the driving circuits has a plurality of detection terminals connected to the plurality of light-emitting units in a one-to-one correspondence, and each of the driving circuits detects the current of the light-emitting units connected thereto through the detection terminals.

[0038] In some embodiments, the control component stores the total number of light-emitting units of the multiple light-emitting modules, and the control component determines the failure rate of the light-emitting units in the multiple light-emitting modules based on the ratio of the number of fault signals received by the control component to the total number of light-emitting units in the multiple light-emitting modules.

[0039] In some embodiments, the failure rate is negatively correlated with the total number.

[0040] In some embodiments, the method further includes: the control component controls the working status of all the light-emitting modules according to the failure rate determined by the control component.

[0041] In some embodiments, the control component has a preset failure rate threshold, and the control component controls the working state of all the light-emitting modules including the steps of:

[0042] comparing the failure rate to a failure rate threshold;

[0043] The working state of the light emitting module is controlled according to the comparison result.

[0044] In some embodiments, the working state of the light emitting module includes allowing the light emitting module to work and prohibiting the light emitting module from working.

[0045] In some embodiments, the comparison result includes that the failure rate is less than the failure rate threshold and that the failure rate is greater than or equal to the failure rate threshold.

[0046] In some embodiments, the control component controls the working state of the light-emitting module according to the comparison result as follows:

[0047] When the failure rate is less than the failure rate threshold, the control component allows the light-emitting module to work;

[0048] When the failure rate is greater than or equal to the failure rate threshold, the control component prohibits the light-emitting module from operating.

[0049] In some embodiments, the method further includes: the failure rate threshold is 10%-20%.

[0050] In some embodiments, the head-mounted light therapy device further includes an alarm component connected to the control component; the method further includes:

[0051] The control component controls the alarm component to issue an alarm message according to the determined failure rate.

[0052] In some embodiments, the control component has a preset failure rate threshold, and the control component controls whether the alarm component issues an alarm message based on a comparison between the failure rate and the failure rate threshold.

[0053] In some embodiments, the control component controls whether the alarm component issues an alarm message specifically as follows:

[0054] When the failure rate is less than the failure rate threshold, the control component controls the alarm component not to issue an alarm message;

[0055] When the failure rate is greater than or equal to the failure rate threshold, the control component controls the alarm component to issue an alarm message.

[0056] According to the method for detecting the failure rate of the light-emitting unit in the head-mounted light therapy device of the embodiment of the present invention, each driving circuit in the method can detect whether each of the three light-emitting units connected to the corresponding light-emitting unit has a failure, and output a failure signal to the control component when the light-emitting unit fails. Thus, the control component can accurately determine the failure rate of the light-emitting unit in the multiple light-emitting modules based on the number of received failure signals, thereby improving the accuracy of the failure rate detection of the light-emitting unit.

[0057] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a control schematic diagram of a lighting component in a head-mounted light therapy device provided in an embodiment of the present invention.

[0059] Figure 2 yes Figure 1 A control schematic diagram of a light-emitting module of the lighting component shown in FIG.

[0060] Figure 3 yes Figure 1 Schematic diagram of the control of the head-mounted light therapy device shown in .

[0061] Figure 4 yes Figure 1 Flowchart of a method for detecting a failure rate of a light-emitting unit of a head-mounted light therapy device as shown in FIG.

[0062] Figure 5 yes Figure 1 Flowchart of another method for detecting failure rate of the light-emitting unit of a head-mounted light therapy device shown in .

[0063] Figure 6 It is a structural schematic diagram of a head-mounted phototherapy device provided in an embodiment of the present invention.

[0064] Figure 7 yes Figure 6 Schematic diagram of the interior of the head-mounted light therapy device shown in . DETAILED DESCRIPTION

[0065] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0066] The following describes a method for detecting a failure rate of a head-mounted light therapy device and a light-emitting unit thereof according to an embodiment of the present invention with reference to the accompanying drawings.

[0067] The head-mounted light therapy device 100 includes a control component 10 and a plurality of lighting components 4 controlled by the control component 10 . Figure 1 It is a control schematic diagram of a control component 10 and an illumination component 4 in a head-mounted phototherapy device 100 of an embodiment of the present invention, wherein the illumination component 4 includes two light-emitting modules 20. Each light-emitting module 20 includes a driving circuit 201, a first light-emitting unit 202a, a second light-emitting unit 202b, and a third light-emitting unit 202c. The driving circuit 201 is connected to the first light-emitting unit 202a, the second light-emitting unit 202b, and the third light-emitting unit 202c, respectively, and the first light-emitting unit 202a, the second light-emitting unit 202b, and the third light-emitting unit 202c are connected in parallel. 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 with a wavelength and pulse frequency required for treatment.

[0068] The first light-emitting unit 202a, the second light-emitting unit 202b and the third light-emitting unit 202c in each of the light-emitting modules 20 may include a plurality of light-emitting elements 210 connected in series, and the light-emitting elements 210 may include light-emitting diodes. Figure 2In the light emitting module 20, 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 each include 6 light emitting diodes connected in series. The 6 light emitting diodes connected in series can emit near-infrared light of the same wavelength or pulse frequency, or can emit near-infrared light of different wavelengths or pulse frequencies.

[0069] The control component 10 is connected to each driving circuit 201 respectively, and the control component 10 is used to output a first control signal, a second control signal and a third control signal to each driving circuit 201 in response to the detection instruction. The first control signal is used to instruct the driving circuit 201 to output a driving current only to the first light-emitting unit 202a. The second control signal is used to instruct the driving circuit 201 to output a driving current only to the second light-emitting unit 202b. The third control signal is used to instruct the driving circuit 201 to output a driving current only to the third light-emitting unit 202c.

[0070] After generating the detection instruction, the control component 10 can respond to the detection instruction and send the first control signal, the second control signal and the third control signal to the driving circuit 201 in sequence, or can send the first control signal, the second control signal and the third control signal to the driving circuit 201 at the same time. The embodiment of the present invention is not limited to this.

[0071] In an embodiment of the present invention, a start button (not shown) may be provided on the head-mounted light therapy device 100, and the control component 10 may generate a detection instruction after detecting a selection operation on the start button (not shown). Alternatively, a power-on self-test button (not shown) may be provided on a control handle (not shown) paired with the head-mounted light therapy device 100, and the control component 10 may generate a detection instruction after detecting a selection operation on the power-on self-test button (not shown). Alternatively, the control component 10 may periodically and automatically generate a detection instruction.

[0072] Each driving circuit 201 is used for a) outputting a driving current only to the first light-emitting unit 202a in response to a first control signal; or b) outputting a driving current only to the second light-emitting unit 202b in response to a second control signal; or c) outputting a driving current only to the third light-emitting unit 202c in response to a third control signal; or d) and in the process of outputting a driving current to any one of the first light-emitting unit 202a, 202b or 202c of the third light-emitting unit 202c, detecting whether a fault occurs in the corresponding light-emitting unit 202a, 202b or 202c; and e) and feeding back the detection result to the control component 10 so that the control component 10 can output a control signal.

[0073] Since the driving circuit 201 can only output a driving current to a corresponding light-emitting unit 202a, 202b, 202c in response to any one of the first control signal, the second control signal, and the third control signal, when a light-emitting unit 202 is detected to have a fault, the driving circuit 201 can output a fault signal to the control component 10, that is, a fault signal is used to indicate that a light-emitting unit 202 has a fault. Then the number of fault signals output by each driving circuit 201 to the control component 10 is equal to the number of light-emitting units with faults in each light-emitting module 20.

[0074] It can be understood that, for each driving circuit 201, after receiving the first control signal, it can output a driving current only to the first light-emitting unit 202a in response to the first control signal. And, in the process of outputting the driving current to the first light-emitting unit 202a, the driving circuit 201 can detect whether the first light-emitting unit 202a is faulty. And when the first light-emitting unit 202a is faulty, the driving circuit 201 outputs a fault signal to the control component 10. When the first light-emitting unit 202a is not faulty, the driving circuit 201 outputs a normal signal to the control component 10. The fault signal can be a low-level signal or a high-level signal relative to the normal signal. The embodiment of the present invention is described by taking the fault signal as a low-level signal relative to the normal signal as an example, and the high-level signal corresponding to the normal signal can be represented by 1, and the low-level signal corresponding to the fault signal can be represented by 0.

[0075] After receiving the second control signal, the driving circuit 201 may output the driving current only to the second light-emitting unit 202b in response to the second control signal. In the process of outputting the driving current to the second light-emitting unit 202b, the driving circuit 201 may detect whether the second light-emitting unit 202b fails. When the second light-emitting unit 202b fails, the driving circuit 201 outputs a fault signal to the control component 10, and when the second light-emitting unit 202b does not fail, the driving circuit 201 outputs a normal signal to the control component 10.

[0076] After receiving the third control signal, the driving circuit 201 may output the driving current only to the third light emitting unit 202c in response to the third control signal. In the process of outputting the driving current to the third light emitting unit 202c, the driving circuit 201 may detect whether the third light emitting unit 202c fails. When the third light emitting unit 202c fails, the driving circuit 201 outputs a fault signal to the control component 10. When the third light emitting unit 202c does not fail, the driving circuit 201 outputs a normal signal to the control component 10.

[0077] The control component 10 is also used to determine the failure rate of the light-emitting unit 202 in the head-mounted light therapy device 100 based on the number of fault signals received. The failure rate is positively correlated with the number of fault signals received, that is, the more fault signals are received, the more faulty light-emitting units 202 in the head-mounted light therapy device 100 are, and accordingly, the higher the failure rate. The fewer fault signals are received, the fewer faulty light-emitting units 202 in the head-mounted light therapy device 100 are, and accordingly, the lower the failure rate.

[0078] In an embodiment of the present invention, after receiving the fault signal output by each driving circuit 201, the control component 10 determines the fault rate of the light-emitting unit 202 in the head-mounted light therapy device 100 based on the number of received fault signals.

[0079] If the number of fault signals received by the control component 10 is 3, the control component 10 can determine that three light-emitting units 202 in the head-mounted light therapy device 100 are faulty based on the number of fault signals.

[0080] In the related prior art, the control component 10 can only determine whether the light-emitting module 20 is faulty. When it is determined that a light-emitting unit in the light-emitting module 20 is faulty, the control component 10 believes that all the light-emitting units in the light-emitting module 20 are faulty. That is, the control component 10 cannot accurately determine the number of faulty light-emitting units in the light-emitting module 20. Even if only a very small number of light-emitting units in the head-mounted light therapy device 100 in the prior art are faulty and can still meet the treatment needs, the treatment cannot be started due to fault limitations, so that the patient cannot effectively use the head-mounted light therapy device 100 before the head-mounted light therapy device 100 is repaired.

[0081] For example, the head-mounted phototherapy device 100 includes 14 light-emitting modules 20, and each light-emitting module 20 includes 3 light-emitting units. Then, the head-mounted phototherapy device 100 includes 14×3, a total of 42 light-emitting units. If one light-emitting unit in any three light-emitting modules 20 fails, that is, a total of three light-emitting units fail, then the control component 10 in the prior art will determine that the light-emitting units in the three light-emitting modules 20 are all faulty, that is, nine light-emitting units fail, when determining that three light-emitting modules 20 fail. Since the number of faulty light-emitting units 9 determined by the control component 10 is greater than the actual number of faulty light-emitting units 3, the use of the head-mounted phototherapy device 100 provided in the prior art will result in a low accuracy in judging the failure rate of the light-emitting units. However, since the head-mounted phototherapy device 100 provided in the embodiment of the present invention can accurately determine the number of faulty light-emitting units in the light-emitting module 20, the accuracy of determining the failure rate of the light-emitting units is improved.

[0082] In summary, the embodiment of the present invention provides a head-mounted phototherapy device 100, because each driving circuit 201 in the head-mounted phototherapy device 100 can only output a driving current to one light-emitting unit 202a, 202b, 202c in response to any one of the first control signal, the second control signal and the third control signal. When the one light-emitting unit fails, the driving circuit 201 outputs a fault signal to the control component 10, and thus the number of fault signals output by the multiple driving circuits 201 to the control component 10 is equal to the number of light-emitting units that have failed in the multiple light-emitting modules 20.

[0083] Compared with the control component 10 which can only determine whether the light-emitting module 20 has a fault but cannot determine the number of faulty light-emitting units in the light-emitting module 20, the control component 10 provided in the embodiment of the present invention can accurately determine the failure rate of the light-emitting unit 202 based on the number of fault signals received, thereby improving the accuracy of the failure rate detection of the light-emitting module 20 containing multiple light-emitting units 202, increasing the service life of the head-mounted light therapy device 100, and reducing the probability of the head-mounted light therapy device 100 being returned to the factory.

[0084] refer to Figure 2 , the driving circuit 201 may have a first control terminal Z1, a second control terminal Z2 and a third control terminal Z3. Each of the first control signal, the second control signal and the third control signal may include a valid signal and two invalid signals. The valid signal may be a high level signal or a low level signal relative to the invalid signal. The embodiment of the present invention is described by taking the valid signal as a high level signal relative to the invalid signal as an example.

[0085] The control component 10 is connected to the first control terminal Z1, the second control terminal Z2 and the third control terminal Z3 of each driving circuit 201 respectively. The control component 10 is used to respond to the detection instruction, output a valid signal to each first control terminal Z1, and output an invalid signal to each second control terminal Z2 and each third control terminal Z3 respectively. That is, the control signal received by the first control terminal Z1 is 1, and the control signals received by the second control terminal Z2 and the third control terminal Z3 are both 0. Then, each driving circuit 201 is used to respond to the valid signal and the invalid signal, and only output the driving current to the first light-emitting unit 202a.

[0086] The control component 10 is used to output a valid signal to each second control terminal Z2, and to output an invalid signal to each first control terminal Z1 and each third control terminal Z3. That is, the control signal received by the second control terminal Z2 is 1, and the control signals received by the first control terminal Z1 and the third control terminal Z3 are both 0. Furthermore, each driving circuit 201 is used to output a driving current only to the second light-emitting unit 202b in response to the valid signal and the invalid signal.

[0087] The control component 10 is used to output a valid signal to each third control terminal Z3, and to output an invalid signal to each first control terminal Z1 and each second control terminal Z2. That is, the control signal received by the third control terminal Z3 is 1, and the control signals received by the first control terminal Z1 and the second control terminal Z2 are both 0. Furthermore, each driving circuit 201 is used to output a driving current only to the third light-emitting unit 202c in response to the valid signal and the invalid signal.

[0088] refer to Figure 2 The driving circuit 201 also has a first detection terminal S1, a second detection terminal S2 and a third detection terminal S3. The first detection terminal S1 is connected to the output terminal of the first light-emitting unit 202a, the second detection terminal S2 is connected to the output terminal of the second light-emitting unit 202b, and the third detection terminal S3 is connected to the output terminal of the third light-emitting unit 202c.

[0089] The driving circuit 201 is used to output the driving current to any one of the first light-emitting unit 202a, 202b or 202c of the first light-emitting unit 202a, the second light-emitting unit 202b and the third light-emitting unit 202c, and at the same time detect the current of the corresponding light-emitting unit 202 through the corresponding detection terminal S, and compare the current obtained by the detection with the current threshold stored in the head-mounted therapeutic device 100; and determine whether the light-emitting unit 202 is faulty according to the comparison result. Specifically, when the current of the corresponding light-emitting unit 202a, 202b, 202c obtained by the first, second and third detection terminals S1, S2, S3 of the driving circuit 201 is less than or equal to the current threshold, the driving circuit 201 determines that the corresponding light-emitting unit 202a, 202b, 202c is faulty. When the current of the corresponding light-emitting unit 202a, 202b, 202c obtained by the first, second, and third detection terminals S1, S2, and S3 of the driving circuit 201 is greater than the current threshold, the driving circuit 201 determines that the corresponding light-emitting unit 202a, 202b, and 202c is not faulty. The current threshold may be pre-stored in the driving circuit 201, and the current threshold may also be stored in the control component 10.

[0090] The driving circuit 201 can obtain the current of any of the light-emitting units 202a, 202b, or 202c in the process of outputting the driving current to any of the first light-emitting unit 202a, the second light-emitting unit 202b, and the third light-emitting unit 202c. If the current of any of the light-emitting units 202a, 202b, or 202c is less than or equal to the current threshold, the driving circuit 201 can determine that any of the light-emitting units 202a, 202b, or 202c has a fault, and the driving circuit 201 can output a fault signal to the control component 10. If the current of any of the light-emitting units 202a, 202b, or 202c is greater than the current threshold, the driving circuit 201 can determine that any of the light-emitting units 202a, 202b, or 202c has no fault, and the driving circuit 201 can output a normal signal to the control component 10.

[0091] For example, when the driving circuit 201 outputs the driving current to the first light-emitting unit 202a, the first detection terminal S1 thereof obtains the current of the first light-emitting unit 202. When it is determined that the current of the first light-emitting unit 202a is less than or equal to the current threshold, the driving circuit 201 outputs a fault signal to the control component 10. When the driving circuit 201 outputs the driving current to the second light-emitting unit 202b, if it is determined that the current of the second light-emitting unit 202b is greater than the current threshold, a normal signal may be output to the control component 10.

[0092] In the process of the driving circuit 201 outputting the driving current to a light-emitting unit 202, it is only necessary to obtain the current of the one light-emitting unit, without obtaining the currents of the other two light-emitting units except the one light-emitting unit, namely the first light-emitting unit 202a, the second light-emitting unit 202b and the third light-emitting unit 202c, thereby improving the efficiency of detecting whether a fault occurs in the light-emitting unit.

[0093] For example, if the control signal received by the first control terminal Z1 is 1, and the control signals received by the second control terminal Z2 and the third control terminal Z3 are both 0, the driving circuit 201 only outputs the driving current to the first light-emitting unit 202a. At this time, if the current of the first light-emitting unit 202a obtained by the driving circuit 201 through the first detection terminal S1 is greater than the current threshold, the first light-emitting unit 202a works normally, and the driving circuit 201 outputs a high-level signal to the control component 10. If the current of the first light-emitting unit 202a obtained by the driving circuit 201 through the first detection terminal S1 is less than or equal to the current threshold, the first light-emitting unit 202a works abnormally, and the driving circuit 201 outputs a low-level signal to the control component 10.

[0094] If the control signal received by the second control terminal Z2 is 1, and the control signals received by the first control terminal Z1 and the third control terminal Z3 are both 0, the driving circuit 201 only outputs the driving current to the second light-emitting unit 202b. At this time, if the current of the second light-emitting unit 202b obtained by the driving circuit 201 through the second detection terminal S2 is greater than the current threshold, the second light-emitting unit 202b works normally, and the driving circuit 201 outputs a high-level signal to the control component 10. If the current of the second light-emitting unit 202b obtained by the driving circuit 201 through the second detection terminal S2 is less than or equal to the current threshold, the second light-emitting unit 202b works abnormally, and the driving circuit 201 outputs a low-level signal to the control component 10.

[0095] If the control signal received by the third control terminal Z3 is 1, and the control signals received by the first control terminal Z1 and the second control terminal Z2 are both 0, the driving circuit 201 only outputs the driving current to the third light-emitting unit 202c. At this time, if the current of the third light-emitting unit 202c obtained by the driving circuit 201 through the third detection terminal S3 is greater than the current threshold, the third light-emitting unit 202c works normally, and the driving circuit 201 outputs a high-level signal to the control component 10. If the current of the third light-emitting unit 202c obtained by the driving circuit 201 through the third detection terminal S3 is less than or equal to the current threshold, the third light-emitting unit 202c works abnormally, and the driving circuit 201 outputs a low-level signal to the control component 10.

[0096] In the embodiment of the present invention, after receiving the fault signal output by each driving circuit 201, the control component 10 can also determine the fault rate of the light-emitting unit 202 in the head-mounted light therapy device 100 based on the ratio of the number of fault signals received to the total number of light-emitting units 202 in the head-mounted light therapy device 100. The fault rate is negatively correlated with the total number of light-emitting units 202, and the control component 10 can pre-store the total number of light-emitting units 202 in the head-mounted light therapy device 100. The sum of the number of normal signals and the number of fault signals is equal to the total number of light-emitting units 202.

[0097] For example, if the head-mounted light therapy device 100 includes 14 light-emitting modules 20, and each 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, then the total number of light-emitting units in the multiple light-emitting modules 20 pre-stored in the control component 10 is 14×3, which is 42 in total.

[0098] Optionally, the control component 10 can determine the failure rate T of the light-emitting unit 202 in the head-mounted light therapy device 100 according to the number k of fault signals received and the total number W of the light-emitting units 202 in the head-mounted light therapy device 100, that is, the failure rate T can be obtained by the following formula: Wherein k is the number of fault signals received by the control component 10 ; W is the total number of light-emitting units 202 .

[0099] Assume that the head-mounted phototherapy device 100 includes 14 light-emitting modules 20, each of which includes 3 light-emitting units. If one of the three light-emitting modules 20 fails, that is, a total of three light-emitting units fail, then the actual failure rate of 42 light-emitting units in the 14 light-emitting modules 20 is

[0100] In the related prior art, after determining that three light-emitting modules are faulty, the control component directly determines that all the light-emitting units in the three light-emitting modules are faulty, that is, nine light-emitting units are faulty. Based on this, the fault rate determined by the control component is Since the failure rate of 21% determined by the control component is much greater than the actual failure rate of 7%, the accuracy of the failure rate detection of the light-emitting unit is low. The failure rate determined by the control component 10 in the head-mounted light therapy device 100 provided in the embodiment of the present invention is 7%. Since the number of failures of the light-emitting units 202 that have failed in the multiple light-emitting modules 20 can be determined, and the failure rate of the light-emitting unit is determined based on the number of failures, compared with the related art, the accuracy of the failure rate determination of the light-emitting unit is effectively improved.

[0101] refer to 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 issue an alarm message when a fault rate is detected to be greater than or equal to a fault rate threshold. The alarm message is used to prompt the user to repair the light-emitting unit 202 in a timely manner. The control component 10 may pre-store a fault rate threshold, and optionally, the fault rate threshold may be 10%-20%. The fault rate threshold may also be stored in the drive circuit 201.

[0102] In an embodiment of the present invention, after determining the failure rate, the control component 10 can detect 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 can determine that the failure rate of the light-emitting unit 202 in the head-mounted light therapy device 100 is high, and the optical power of the near-infrared light emitted by the head-mounted light therapy device 100 is low, and the therapeutic effect cannot be achieved. Then the control component 10 can control the alarm component 30 to issue an alarm message, thereby allowing the user to promptly repair the faulty light-emitting unit 202 in the head-mounted light therapy device 100 to ensure the therapeutic effect of the head-mounted light therapy device 100.

[0103] 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 light therapy device 100 is low, and the near-infrared light emitted by the normally working light-emitting unit in the head-mounted light therapy device 100 has a high optical power and can achieve a therapeutic effect. Then, the control component 10 does not need to control the alarm component 30 to issue an alarm message.

[0104] The alarm information may include at least one of text information, audio information and illumination information. For example, the text information may be "The failure rate of the lamp bead is high, please repair it in time".

[0105] refer to 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 one-to-one to the plurality of driving circuits 201 in the plurality of light-emitting modules 20. Figure 3 The diagram shows 14 signal transmission circuits 102 and 14 light-emitting modules 20. Optionally, the main control circuit 101 may be a microcontroller unit (MCU), and the signal transmission circuit 102 may be an input / output (I / O) circuit.

[0106] The main control circuit 101 is connected to a plurality of signal transmission circuits 102 respectively, and the main control circuit 101 is used to output a first control signal, a second control signal and a third control signal to a corresponding driving circuit 201 through each signal transmission circuit 102. Each signal transmission circuit 102 is connected to a first control terminal Z1, a second control terminal Z2 and a third control terminal Z3 in a corresponding driving circuit 201 respectively.

[0107] refer to Figure 3 The control component 10 may further include a state detection circuit 103. The output end of each driving circuit 201 is also connected to the input end of the state detection circuit 103. Figure 3 The connection relationship between each driving circuit 201 and the state detection circuit 103 is not shown). Each driving circuit 201 is used for outputting a driving current to any light-emitting unit 202 of the first light-emitting unit 202a, the second light-emitting unit 202b and the third light-emitting unit 202c. If the detection terminal S detects that any light-emitting unit 202 has a fault, it can output a fault signal to the state detection circuit 103.

[0108] The state detection circuit 103 is also connected to the main control circuit 101, and the state detection circuit 103 is used to output the number of fault signals received to the main control circuit 101. The main control circuit 101 is also used to determine the failure rate of the light-emitting unit in the head-mounted light therapy device 100 based on the number of fault signals received. In an embodiment of the present invention, after receiving the fault signals sent by all driving circuits 201, the state detection circuit 103 can count the number of fault signals received and send the number of fault signals received to the main control circuit 101. The main control circuit 101 can determine the failure rate of the light-emitting unit in the head-mounted light therapy device 100 based on the ratio of the number of fault signals received to the total number of light-emitting units in the head-mounted light therapy device 100.

[0109] The process of determining the failure rate of the light-emitting units in the plurality of light-emitting modules 20 by the main control circuit 101 can refer to the process of determining the failure rate of the light-emitting units in the plurality of light-emitting modules 20 by the control component 10, and the embodiment of the present invention will not be repeated here. Among them, the reference coefficient, the total number and the failure rate threshold value can all be stored in the main control circuit 101.

[0110] refer to Figure 2 Each light-emitting module 20 may further include a first resistor R1, a second resistor R2, and a third resistor R3, and the first resistor R1, the second resistor R2, and the third resistor R3 are all used for voltage division. One end of the first resistor R1 is connected to the output end of the first light-emitting unit 202a in the light-emitting module 20, and the other end is connected to the ground terminal GND. One end of the second resistor R2 is connected to the output end of the second light-emitting unit 202b in the light-emitting module 20, and the other end is connected to the ground terminal GND. One end of the third resistor R3 is connected to the output end of the third light-emitting unit 202c in the light-emitting module 20, and the other end is connected to the ground terminal GND.

[0111] refer to Figure 3 The head-mounted phototherapy 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), and the host computer (not shown) is used to send control instructions to the main control circuit 101 through the serial communication unit 40, and the control instructions may include self-test instructions, etc. Optionally, the host computer may be a control handle.

[0112] The head-mounted light therapy device 100 may further include a power supply circuit 50 connected to the main control circuit 101 , and the power supply circuit 50 is used to supply power to the main control circuit 101 .

[0113] The head-mounted light therapy device 100 may also include a memory 60 connected to the main control circuit 101. The main control circuit 101 is used to store received data in the memory 60 or read data in the memory 60 and send it to a host computer (not shown). The data may include a failure rate, etc.

[0114] The head-mounted light therapy device 100 may further include an analog to digital convert (ADC) circuit 70 connected to the main control circuit 101 , and the ADC circuit 70 is used to convert the analog signal sent by the main control circuit 101 into a digital signal.

[0115] In summary, the embodiment of the present invention provides a head-mounted phototherapy device 100, since each driving circuit 201 in the head-mounted phototherapy device 100 can only output a driving current to one light-emitting unit 202 in response to any one of the first control signal, the second control signal and the third control signal. If a light-emitting unit 202 fails, the driving circuit 201 can output a fault signal to the control component 10, and the number of fault signals output by the multiple driving circuits 201 to the control component 10 is equal to the number of faulty light-emitting units 202 in the multiple light-emitting modules 20.

[0116] Compared with the control component 10 which can only determine whether the light-emitting module 20 has a fault but cannot determine the number of faulty light-emitting units in the light-emitting module 20, the control component 10 provided in the embodiment of the present invention can accurately determine the failure rate of the light-emitting unit 202 based on the number of fault signals received, thereby improving the accuracy of the failure rate detection of the light-emitting unit 202, increasing the use time of the head-mounted light therapy device 100, and reducing the probability of the head-mounted light therapy device 100 being returned to the factory.

[0117] like Figure 6 and Figure 7The figure shows a specific embodiment of a head-mounted phototherapy device 100 in accordance with the present invention. The head-mounted phototherapy device 100 includes a front shell 2, an upper shell 1, a rear shell 3, which cover and adapt to the treatment area of ​​the patient's head, and a plurality of light assemblies 4 which are respectively arranged in the upper shell 1, the front shell 2 and the rear shell 3 for performing light treatment on the treatment area of ​​the patient's head. The upper shell 1 covers at least the top area of ​​the patient's head, the front shell 2 covers at least the forehead, eyes, left and right temples and other facial areas of the patient's head, and the rear shell 3 covers at least the back of the head of the patient. The upper shell 1 also includes a main control board 5 for controlling all the light assemblies 4 and an upper adapter board 6 which is respectively connected to the main control board 5 and the light assemblies 4 located in the upper shell 1. The main control board 5 corresponds to the aforementioned control assembly 10, and the main control circuit 101, the state detection circuit 103, the ADC circuit 70, the memory 60, the alarm assembly 30 and the serial communication unit 40 are integrated on the main control board 5, and the signal transmission circuit 102 located in the upper shell 1 is integrated on the upper adapter board 6. The front housing 2 is provided with a front adapter board 7 connected to the main control board 5 and the illumination assembly 4 located in the front housing 2, respectively, and the front adapter board 7 is correspondingly integrated with the aforementioned signal transmission circuit 102 located in the front housing 2. The rear housing 3 is provided with a rear adapter board 8 connected to the main control board 5 and the illumination assembly 4 located in the rear housing 3, respectively, and a power supply board 9 for supplying power to the main control board 5, and the rear adapter board 8 is correspondingly integrated with the aforementioned signal transmission circuit 102 located in the rear housing 3, and the power supply board 9 corresponds to the aforementioned power supply circuit 50. The illumination assembly 4 includes the aforementioned two driving circuits 201 and the corresponding two light-emitting modules 20.

[0118] refer to Figure 2 and Figure 3 , each driving circuit 201 has a first control terminal Z1, a second control terminal Z2 and a third control terminal Z3, and the control component 10 is connected to the first control terminal Z1, the second control terminal Z2 and the third control terminal Z3 of each driving circuit 201 respectively. The driving circuit 201 also has a first detection terminal S1, a second detection terminal S2 and a third detection terminal S3, the first detection terminal S1 is connected to the output terminal of the first light-emitting unit 202a, the second detection terminal S2 is connected to the output terminal of the second light-emitting unit 202b, and the third detection terminal S3 is connected to the output terminal of the third light-emitting unit 202c. Each light-emitting module 20 also includes a first resistor R1, a second resistor R2 and a third resistor R3, and the first resistor R1, the second resistor R2 and the third resistor R3 are all used for voltage division. One end of the first resistor R1 is connected to the output terminal of the first light-emitting unit 202a in the light-emitting module 20, and the other end is connected to the ground terminal GND. One end of the second resistor R2 is connected to the output terminal of the second light-emitting unit 202b in the light-emitting module 20, and the other end is connected to the ground terminal GND. One end of the third resistor R3 is connected to the output end of the third light emitting unit 202 c in the light emitting module 20 , and the other end is connected to the ground end GND.

[0119] The main control circuit 101 responds to the detection instruction and sends a control signal to the corresponding illumination component 4 through the corresponding signal transmission circuit 102. The multiple control terminals Z of the driving circuit 201 in the illumination component 4 receive the corresponding control signal and send it to the corresponding light-emitting unit 202. The control signal includes a valid signal and two invalid signals. The embodiment of the present invention is described by taking the valid signal as a high-level signal relative to the invalid signal as an example. After the multiple detection terminals S of the driving circuit 201 detect the current of the corresponding light-emitting unit 202 and compare it with the pre-stored current threshold, they output a fault signal or a normal signal corresponding to the working state of the corresponding light-emitting unit to the state detection circuit 103. The state detection circuit 103 determines the number of faulty light-emitting units 202 by counting the number of fault signals in the head-mounted light therapy device 100, and transmits the number of faulty light-emitting units 202 determined to be faulty to the main control circuit 101 through the signal transmission circuit 102. The main control circuit 101 determines the failure rate of the light emitting unit 202 according to the received failure number of the light emitting unit 202 and the total number of the stored light emitting units 202; and determines whether to allow the light illuminating component 4 to start treatment or prohibit the light illuminating component 4 from starting treatment by comparing the detected failure rate of the light emitting unit with the failure rate threshold stored in the memory 60. The embodiment of the present invention is described by taking the fault signal as a low level signal relative to the normal signal as an example.

[0120] The control component 10 outputs a valid signal to the first control terminal Z1 of the driving circuit 201 in response to the detection instruction, and outputs invalid signals to the second control terminal Z2 and the third control terminal Z3 respectively. That is, the control signal received by the first control terminal Z1 is 1, and the control signals received by the second control terminal Z2 and the third control terminal Z3 are both 0. Then, the driving circuit 201 only outputs a driving current to the first light-emitting unit 202a in response to the valid signal and the invalid signal. When the current of the first light-emitting unit 202a obtained by the driving circuit 201 through its first detection terminal S1 is greater than the current threshold, a high-level signal is output to the control component 10; when the current of the first light-emitting unit 202a obtained by the driving circuit 201 through the first detection terminal S1 is less than or equal to the current threshold, the driving circuit 201 outputs a low-level signal to the control component 10.

[0121] The control component 10 outputs a valid signal to the second control terminal Z2 of the driving circuit 201 in response to the detection instruction, and outputs an invalid signal to the first control terminal Z1 and the third control terminal Z3 respectively. That is, the control signal received by the second control terminal Z2 is 1, and the control signals received by the first control terminal Z1 and the third control terminal Z3 are both 0. Then, the driving circuit 201 only outputs a driving current to the second light-emitting unit 202b in response to the valid signal and the invalid signal. When the current of the second light-emitting unit 202b obtained by the driving circuit 201 through its second detection terminal S2 is greater than the current threshold, a high-level signal is output to the control component 10; when the current of the second light-emitting unit 202b obtained by the driving circuit 201 through the second detection terminal S2 is less than or equal to the current threshold, the driving circuit 201 outputs a low-level signal to the control component 10.

[0122] The control component 10 outputs a valid signal to the third control terminal Z3 of the driving circuit 201 in response to the detection instruction, and outputs an invalid signal to each first control terminal Z1 and each second control terminal Z2. That is, the control signal received by the third control terminal Z3 is 1, and the control signals received by the first control terminal Z1 and the second control terminal Z2 are both 0. Then, the driving circuit 201 only outputs a driving current to the third light-emitting unit 202c in response to the valid signal and the invalid signal. When the current of the third light-emitting unit 202c obtained by the driving circuit 201 through its third detection terminal S3 is greater than the current threshold, a high-level signal is output to the control component 10; when the current of the third light-emitting unit 202c obtained by the driving circuit 201 through the third detection terminal S3 is less than or equal to the current threshold, the driving circuit 201 outputs a low-level signal to the control component 10.

[0123] Figure 4 is a flowchart of a method for detecting a failure rate of a light-emitting unit in a head-mounted light therapy device 100 provided by an embodiment of the present invention. The method can be applied to Figures 1 to 3 Any of the head-mounted light therapy devices 100 shown. Figure 4 As shown, the method includes:

[0124] Step 401 : The control component 10 outputs a first control signal, a second control signal and a third control signal to each driving circuit 201 in response to a detection instruction.

[0125] Step 402, each driving circuit 201 outputs a driving current only to the first light-emitting unit 202a in response to the first control signal, outputs a driving current only to the second light-emitting unit 202b in response to the second control signal, and outputs a driving current only to the third light-emitting unit 202c in response to the third control signal.

[0126] Step 403 , while each driving circuit 201 outputs a driving current to any of the first light-emitting unit 202a , the second light-emitting unit 202b and the third light-emitting unit 202c , it simultaneously detects and determines whether any of the light-emitting units has a fault, and transmits the determination result to the control component 10 .

[0127] Step 404 : The control component 10 determines the failure rate of the light-emitting units in the plurality of light-emitting modules 20 based on the number of received fault signals.

[0128] Among them, the failure rate is positively correlated with the number of received failure signals.

[0129] In step 403, the process in which the driving circuit 201 transmits the determination result to the control component 10 is specifically as follows: when any light-emitting unit is detected to have a fault, the driving circuit 201 outputs a fault signal to the control component 10; when any light-emitting unit is detected to have no fault, the driving circuit 201 outputs a normal signal to the control component 10.

[0130] In step 403, the driving circuit 201 detects and determines whether any light-emitting unit has a fault and transmits the determination result to the control component 10. Specifically, the current flowing through any light-emitting unit is detected and compared with the current threshold preset in the driving circuit 201. When the current of any light-emitting unit 202 is less than or equal to the current threshold, the driving circuit 201 outputs a fault signal to the control component 10; when the current of any light-emitting unit 202 is greater than the current threshold, the driving circuit 201 outputs a normal signal to the control component 10 to control the light-emitting unit 202 to work normally.

[0131] In summary, the embodiment of the present invention provides a method for detecting the failure rate of the light-emitting unit in the head-mounted phototherapy device 100. In this method, each driving circuit 201 can only output a driving current to one light-emitting unit in response to any one of the first control signal, the second control signal and the third control signal. If the one light-emitting unit fails, the driving circuit 201 can output a fault signal to the control component 10, so that the number of fault signals output by the multiple driving circuits 201 to the control component 10 is equal to the number of light-emitting units with faults in the multiple light-emitting modules 20.

[0132] Compared with the prior art in which the control component can only determine whether the light-emitting module will fail but cannot determine the number of failed light-emitting units in the light-emitting module, the control component 10 provided in the embodiment of the present invention can accurately determine the failure rate of the light-emitting unit based on the number of fault signals received, thereby improving the accuracy of the failure rate detection of the light-emitting unit.

[0133] Figure 5is a flowchart of another method for detecting the failure rate of a light-emitting unit in a head-mounted light therapy device 100 provided by an embodiment of the present invention. The method can be applied to Figures 1 to 3 Any of the head-mounted light therapy devices 100 shown. Figure 5 As shown, the method may include:

[0134] Step 501 : The control component 10 outputs a first control signal, a second control signal and a third control signal to each driving circuit 201 in response to a detection instruction.

[0135] Step 502, each driving circuit 201 outputs a driving current only to the first light-emitting unit 202a in response to the first control signal, outputs a driving current only to the second light-emitting unit 202b in response to the second control signal, and outputs a driving current only to the third light-emitting unit 202c in response to the third control signal.

[0136] Step 503, when each driving circuit 201 outputs a driving current to any of the first light-emitting unit 202a, the second light-emitting unit 202b and the third light-emitting unit 202c, it simultaneously detects and obtains the current of any light-emitting unit, compares the current of any light-emitting unit with the current threshold, and determines whether any light-emitting unit fails based on the comparison result.

[0137] Step 504: Each driving circuit 201 outputs a signal to the control component 10 according to the result of whether any light-emitting unit fails.

[0138] Step 505 : The control component 10 determines the failure rate of the light-emitting units in the head-mounted light therapy device 100 based on the ratio of the number of fault signals received to the total number of light-emitting units in the head-mounted light therapy device 100 .

[0139] Step 506 : The control component 10 compares the detected failure rate with the failure rate threshold, and controls the working status of all the light-emitting modules 20 according to the comparison result.

[0140] Among them, the determination of whether any light-emitting unit 202 is faulty according to the comparison result described in step 503 is specifically as follows: when the current of any light-emitting unit 202 is less than or equal to the current threshold, the driving circuit 201 determines that any light-emitting unit 202 is faulty; when the current of any light-emitting unit 202 is greater than the current threshold, the driving circuit 201 determines that any light-emitting unit 202 is not faulty.

[0141] Each driving circuit 201 described in step 504 outputs a signal to the control component specifically as follows: when it is determined that any light-emitting unit 202 has a fault, the driving circuit 201 outputs a fault signal to the control component 10; when it is determined that any light-emitting unit 202 has not a fault, the driving circuit 201 outputs a normal signal to the control component 10.

[0142] Among them, the failure rate is negatively correlated with the total number, and positively correlated with the number of received fault signals.

[0143] The control component 10 described in step 506 controls the working status of all light-emitting modules 20 according to the comparison result. Specifically, when the failure rate is less than the failure rate threshold, the drive circuit 201 outputs a failure signal to the control component 10, allowing all light-emitting modules 20 to work normally; when the failure rate is greater than or equal to the failure rate threshold, the drive circuit 201 outputs a normal signal to the control component 10, prohibiting all light-emitting modules 20 from working.

[0144] It should be noted that the specific implementation of the above steps 401 to 404 and the above steps 501 to 506 can refer to the above device embodiment, and the embodiment of the present invention will not be repeated here.

[0145] 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, each driving circuit 201 can only output a driving current to one light-emitting unit 202 in response to any one of the first control signal, the second control signal and the third control signal. If a light-emitting unit 202 fails, the driving circuit 201 can output a fault signal to the control component 10, so that the number of fault signals output by the multiple driving circuits 201 to the control component 10 is equal to the number of light-emitting units 202 that have failed in the multiple light-emitting modules 20.

[0146] Compared with the existing related technology in which the control component can only determine whether the light-emitting module will fail but cannot determine the number of failed light-emitting units in the light-emitting module, the control component 10 provided in the embodiment of the present invention can accurately determine the failure rate of the light-emitting unit 202 based on the number of fault signals received, thereby improving the accuracy of the failure rate detection of the light-emitting unit 202.

[0147] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced 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, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0148] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of 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, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0149] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0150] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first", "second" and "third" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0151] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A head-mounted phototherapy device, characterized in that: include: A control component and a plurality of light-emitting modules controlled by the control component, each of the light-emitting modules comprising a driving circuit and a plurality of light-emitting units respectively connected to the driving circuit; the control component is respectively connected to each of the driving circuits and outputs a plurality of control signals to each of the driving circuits in response to a detection instruction, and the plurality of control signals respectively correspond to the plurality of light-emitting units one by one; Each of the driving circuits outputs a driving current only to the light-emitting unit corresponding to a corresponding control signal among the plurality of control signals; and detecting and determining whether any of the plurality of light-emitting units fails during the process of outputting the driving current to any of the plurality of light-emitting units, and feeding back an output signal to the control component; The control component also determines the failure rate of the light-emitting units in the plurality of light-emitting modules based on the received signal output by the driving circuit.

2. The head-mounted phototherapy device according to claim 1, characterized in that: One of the control component or the drive circuit has a preset current threshold, and the drive circuit detects and determines whether any of the multiple light-emitting units has a fault. The specific steps are as follows: when it is detected that any of the light-emitting units has a fault, the drive circuit outputs a fault signal to the control component; when it is detected that any of the light-emitting units has not a fault, the drive circuit outputs a normal signal to the control component.

3. The head-mounted phototherapy device according to claim 2, characterized in that: The driving circuit detects and determines whether any of the multiple light-emitting units has a fault. Specifically, the driving circuit detects and obtains the driving current of any of the light-emitting units, compares the current obtained with a current threshold preset in the control component, and determines whether any of the light-emitting units has a fault based on the comparison result.

4. The head-mounted phototherapy device according to claim 3, characterized in that: The driving circuit determines whether any of the light-emitting units has a fault based on the comparison result: when the current of any of the light-emitting units detected and obtained is less than or equal to the current threshold, the driving circuit outputs a fault signal to the control component; when the current of any of the light-emitting units detected and obtained is greater than the current threshold, the driving circuit outputs a normal signal to the control component.

5. The head-mounted phototherapy device according to claim 1, characterized in that: Each of the control signals includes a valid signal and multiple invalid signals. Each of the driving circuits has multiple control terminals corresponding to the multiple light-emitting units and connected to the control component one by one. The control component outputs the valid signal to one of the control terminals of each driving circuit in response to the detection instruction, and outputs the invalid signals to the remaining control terminals in the driving circuit respectively; each of the driving circuits outputs the driving current only to one of the multiple light-emitting units corresponding to the control terminal that receives the valid signal output by the control component in response to the valid signal and the invalid signal.

6. The head-mounted phototherapy device according to claim 1, characterized in that: Each of the driving circuits also has a detection terminal connected to the plurality of light-emitting units in a one-to-one correspondence.

7. The head-mounted phototherapy device according to claim 1, characterized in that: Each of the light-emitting modules further comprises a plurality of resistors, one end of each of the plurality of resistors is respectively connected to the output ends of the plurality of light-emitting units of the light-emitting module in a one-to-one correspondence, and the other end of each of the plurality of resistors is connected to the ground end.

8. The head-mounted phototherapy device according to claim 1, characterized in that: Each of the light-emitting units includes a plurality of light-emitting elements connected in series, and each of the light-emitting elements includes a light-emitting diode.

9. The head-mounted phototherapy device according to claim 1, characterized in that: The control component includes a main control circuit and multiple signal transmission circuits, and the multiple signal transmission circuits are connected to the multiple driving circuits one by one; the main control circuit is connected to the multiple signal transmission circuits respectively; the main control circuit is configured to output multiple control signals to the corresponding driving circuits through the signal transmission circuits.

10. The head-mounted phototherapy device according to claim 9, characterized in that: The control component further includes a state detection circuit connected to the main control circuit and each of the drive circuits; each of the drive circuits outputs a corresponding signal to the state detection circuit after detecting and determining whether any of the plurality of light-emitting units fails; The state detection circuit outputs the received signal to the main control circuit; The main control circuit determines the failure rate of the light-emitting units in the plurality of light-emitting modules based on the received signal transmitted by the state detection circuit.

11. The head-mounted phototherapy device according to claim 1, characterized in that: It also includes an alarm component connected to the control component; the control component controls whether the alarm component issues an alarm message based on the failure rate.

12. The head-mounted phototherapy device according to any one of claims 1 to 11, characterized in that: The control component has a preset fault rate threshold, and the control component determines the fault rate of the light-emitting units in the plurality of light-emitting modules based on the ratio of the number of the received fault signals to the total number of the light-emitting units in the plurality of light-emitting modules; The failure rate is compared with the failure rate threshold, and the working states of all the light-emitting modules are controlled according to the comparison result.

13. The head-mounted phototherapy device according to claim 12, characterized in that: The control component controls the working status of all the light-emitting modules according to the comparison result: when the failure rate is less than the failure rate threshold, the light-emitting module is allowed to work; when the failure rate is greater than or equal to the failure rate threshold, the light-emitting module is prohibited from working.

14. The head-mounted phototherapy device according to claim 13, characterized in that: The failure rate threshold is 10%-20%.

15. The head-mounted phototherapy device according to claim 1, characterized in that: The control component is further configured to generate the detection instruction in response to a self-detection operation.

16. A method for detecting the failure rate of a head-mounted phototherapy device, characterized in that: The head-mounted therapeutic device is a head-mounted therapeutic device according to any one of claims 1 to 15, and the method comprises the following steps: transmitting a detection instruction to the control component; The control component outputs a plurality of control signals to each of the drive circuits in response to a detection instruction; Each of the driving circuits outputs a driving current to one of the plurality of light-emitting units connected thereto according to the received control signal; Each of the driving circuits detects and determines whether any of the plurality of light-emitting units connected thereto fails, and outputs a signal to the control component; as well as The control component determines the failure rate of the light-emitting units in the plurality of light-emitting modules based on the number of received output signals of each of the driving circuits.

17. The method according to claim 16, characterized in that One of the control component or the drive circuit has a preset current threshold, and each drive circuit outputs a signal to the control component specifically as follows: when each drive circuit detects that any of the light-emitting units has a fault, it outputs a fault signal to the control component; when each drive circuit detects that any of the light-emitting units has not a fault, it outputs a normal signal to the control component.

18. The method according to claim 17, characterized in that Each of the driving circuits detects and determines whether any of the plurality of light emitting units connected thereto fails, including the following steps: Each of the driving circuits detects the current of the light emitting unit receiving the driving current outputted by the driving circuit; Each of the driving circuits compares the current detected and acquired by each of the driving circuits with a current threshold; as well as Each of the driving circuits outputs a corresponding signal to the control component according to the comparison result.

19. The method according to claim 18, characterized in that Each driving circuit outputs a corresponding signal to the control component according to the comparison result. Specifically, each driving circuit outputs a fault signal to the control component when it detects that the current of any light-emitting unit is less than or equal to the current threshold; each driving circuit outputs a normal signal to the control component when it detects that the current of any light-emitting unit is greater than the current threshold.

20. The method according to any one of claims 16 to 19, characterized in that The failure rate is positively correlated with the number of the received failure signals.

21. The method according to any one of claims 16 to 19, characterized in that Each of the driving circuits has a plurality of detection terminals connected to the plurality of light-emitting units in a one-to-one correspondence, and each of the driving circuits detects the current of the light-emitting units connected thereto through the detection terminals.

22. The method according to any one of claims 16 to 19, characterized in that The control component stores the total number of light-emitting units of the multiple light-emitting modules, and the control component determines the failure rate of the light-emitting units in the multiple light-emitting modules based on the ratio of the number of fault signals received by the control component to the total number of light-emitting units in the multiple light-emitting modules.

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

24. The method according to any one of claims 16 to 19, characterized in that The method further includes: the control component controlling the working states of all the light-emitting modules according to the failure rates determined by the control component.

25. The method according to claim 24, characterized in that The control component has a preset fault rate threshold, and the control component controls the working state of all the light-emitting modules, including the steps of: comparing the failure rate to a failure rate threshold; The working state of the light emitting module is controlled according to the comparison result.

26. The method according to claim 25, characterized in that The working state of the light emitting module includes allowing the light emitting module to work and prohibiting the light emitting module from working.

27. The method according to claim 25, characterized in that The comparison result includes that the failure rate is less than the failure rate threshold and that the failure rate is greater than or equal to the failure rate threshold.

28. The method according to claim 25, characterized in that The control component controls the working state of the light-emitting module according to the comparison result as follows: When the failure rate is less than the failure rate threshold, the control component allows the light-emitting module to work; 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, characterized in that The method also includes: the failure rate threshold is 10%-20%.

30. The method according to claim 16, characterized in that The head-mounted phototherapy device also includes an alarm component connected to the control component; the method also includes: The control component controls the alarm component to issue an alarm message according to the determined failure rate.

31. The method according to claim 30, characterized in that The control component has a preset fault rate threshold, and the control component controls whether the alarm component issues an alarm message based on a comparison between the fault rate and the fault rate threshold.

32. The method according to claim 31, characterized in that The control component controls whether the alarm component issues an alarm message specifically as follows: When the failure rate is less than the failure rate threshold, the control component controls the alarm component not to issue 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 issue an alarm message.

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