Blink frequency monitoring device

Abstract

The utility model relates to a blink frequency monitoring device, and relates to the technical field of medical instruments. The blink frequency monitoring device comprises a fixing structure, a connecting assembly, a sensing assembly and a controller. The fixing structure comprises two fixing assemblies which are oppositely arranged; the sensing assembly is arranged on the fixing structure, and the sensing assembly is used for sensing the blinking action of a person to be detected and generating a corresponding sensing electric signal; the controller is used for receiving the sensing electric signal generated by the sensing assembly and monitoring the blinking frequency of the person to be detected according to the sensing electric signal; wherein the connecting assembly can adjust the distance between the two fixing assemblies, so that the two fixing assemblies are matched to clamp the mirror frame. According to the technical scheme, the problems that an existing blink frequency testing instrument is large in size, a person to be tested needs to fix the instrument in front of the instrument and stare at a camera tightly to complete testing, and the measured blink frequency cannot reflect the blink frequency of the person to be tested in normal work and life can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a blink frequency monitoring device. Background Art

[0002] Blinking frequency is an important reference indicator for dry eyes and visual fatigue. Abnormal blinking frequency is a sign of juvenile myopia. Testing the blinking frequency can monitor and remind visual fatigue and juvenile myopia prevention and control, and prevent the occurrence and development of visual fatigue and myopia.

[0003] Existing blink frequency test instruments collect video through a camera and calculate the blink frequency based on post-processing of the video image.

[0004] However, the applicant has found that there are at least the following problems in the prior art: the blinking frequency test instrument is large in size, and the subject needs to be fixed in front of the instrument and stare at the camera to complete the test. During the test, the subject cannot move, and turning the head or lowering the head will affect the measurement. Therefore, the measured blinking frequency cannot reflect the subject's blinking frequency in normal work and life. Utility Model Content

[0005] The present invention provides a blink frequency monitoring device, which can solve the problems that the existing blink frequency testing instruments are large in size, require the subject to be fixed in front of the instrument and stare at the camera to complete the test, and the measured blink frequency cannot reflect the blink frequency of the subject in normal work and life.

[0006] In a first aspect, an embodiment of the utility model provides a blink frequency monitoring device, comprising:

[0007] A fixing structure, comprising two fixing components arranged opposite to each other;

[0008] A connecting component, two ends of which are respectively arranged on the two fixing components;

[0009] A sensing component is disposed on the fixed structure, and is used to sense the blinking action of the subject and generate a corresponding sensing electrical signal; and

[0010] A controller, used for receiving the sensing electrical signal generated by the sensing component, and monitoring the blinking frequency of the subject according to the sensing electrical signal;

[0011] Wherein, the connecting component can adjust the distance between the two fixing components so that the two fixing components cooperate to clamp the frame worn by the subject.

[0012] In one embodiment, the connection assembly comprises:

[0013] A guide rod, one end of which is inserted into one of the two fixing assemblies, and the other end of which is inserted into the other of the two fixing assemblies;

[0014] An elastic member is sleeved on the guide rod, one end of the elastic member is connected to one of the two fixing assemblies, and the other end of the elastic member is connected to the other of the two fixing assemblies.

[0015] In one embodiment, the fixing assembly comprises:

[0016] The main body is a non-closed annular structure; and

[0017] An auxiliary portion, disposed on a side of the main body away from the connecting assembly;

[0018] Wherein, guide grooves for inserting the guide rods are arranged at both ends of the main body, and the extending direction of the guide grooves is parallel to the extending direction of the guide rods.

[0019] In one embodiment, the sensing component includes a transmitter and a receiver respectively located on both sides of the frame and arranged opposite to each other, the transmitter is arranged on one of the two fixed components, and the receiver is arranged on the other of the two fixed components, so as to generate the sensing electrical signal based on the blocking light path triggering of the blinking action of the subject.

[0020] In one embodiment, the fixing assembly includes a rotating member rotatably disposed on the auxiliary portion, and the transmitter and the receiver are both disposed on the rotating member to adjust a transmitting angle of the transmitter and a receiving angle of the receiver.

[0021] In one embodiment, the blink frequency monitoring device includes a shading plate, which is arranged on the auxiliary part to block the light path of the sensing component on a side close to the frame.

[0022] In one embodiment, a distance between the auxiliary portion of one of the two fixing assemblies and the auxiliary portion of the other of the two fixing assemblies is 30 mm-50 mm.

[0023] In one embodiment, the blink frequency monitoring device includes a power supply disposed in the auxiliary part, and the power supply is electrically connected to the sensing component and the controller respectively.

[0024] In one embodiment, a charging port is provided on the auxiliary part, and the charging port is electrically connected to the power source.

[0025] In one embodiment, the blink frequency monitoring device includes a reminder module, and the reminder module is electrically connected to the controller. The controller can trigger the reminder module to operate according to the blink frequency.

[0026] Compared with the prior art, the advantages of the embodiments of the utility model are that the blinking frequency monitoring device is installed on the frame worn by the subject to be tested by clamping the frame worn by the subject to be tested with two fixing components. The subject to be tested can move normally during the test, and the measured blinking frequency can reflect the blinking frequency of the subject to be tested in normal work and life, with high accuracy. The distance between the two fixing components is adjusted by the connecting component, so that the blinking frequency monitoring device can be installed on a variety of frames, and the subject to be tested can adjust it according to the frame worn, which has strong practicality and versatility; the blinking action of the subject to be tested is sensed by the sensing component. Compared with the existing blinking frequency test instrument that uses a camera to collect blinking actions and needs to use image processing algorithms to process the video later, the sensing component used in this application occupies a smaller volume and has lower cost, and does not require the subject to be tested to be fixed in front of the instrument and stare at the camera, which has higher flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0028] Figure 1 It is a structural schematic diagram of the blink frequency monitoring device provided by an embodiment of the utility model when it is installed on a spectacles frame;

[0029] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of a blink frequency monitoring device provided in the embodiment;

[0030] Figure 3 yes Figure 1 A side view of a blink frequency monitoring device provided in an embodiment;

[0031] Figure 4 yes Figure 3 Cross-sectional view along AA direction;

[0032] Figure 5 yes Figure 1 A schematic diagram of the stereoscopic structure of the blink frequency monitoring device provided in the embodiment in another perspective;

[0033] Figure 6 yes Figure 1 A schematic diagram of the stereoscopic structure of the blink frequency monitoring device provided in the embodiment in another viewing angle;

[0034] Figure 7 yes Figure 1 The embodiment provided in the figure shows a light path diagram of the light emitted by the transmitter, which passes through the eye surface of the subject and then is reflected to the receiver.

[0035] Reference numerals:

[0036] 10. Fixed structure; 110. Fixed component; 1101. Main body; 1102. Auxiliary part; 1103. Guide groove; 120. Rotating part; 20. Connecting component; 210. Guide rod; 220. Elastic part; 30. Sensing component; 310. Transmitter; 320. Receiver; 40. Frame; 50. Sunshade; 60. Charging port. DETAILED DESCRIPTION

[0037] The utility model will be further described below in conjunction with the accompanying drawings.

[0038] Blinking frequency is an important reference indicator for dry eyes and visual fatigue. Abnormal blinking frequency is a sign of juvenile myopia. Testing the blinking frequency can monitor and remind visual fatigue and juvenile myopia prevention and control, and prevent the occurrence and development of visual fatigue and myopia.

[0039] Existing blink frequency test instruments collect video through a camera and calculate the blink frequency based on post-processing of the video image.

[0040] However, the applicant has found that there are at least the following problems in the prior art: the blinking frequency test instrument is large in size, and the subject needs to be fixed in front of the instrument and stare at the camera to complete the test. During the test, the subject cannot move, and turning the head or lowering the head will affect the measurement. Therefore, the measured blinking frequency cannot reflect the subject's blinking frequency in normal work and life.

[0041] In order to solve the above technical problems, at least one embodiment of the utility model provides a blinking frequency monitoring device, including a fixed structure 10, a connecting component 20, a sensing component 30 and a controller, wherein the fixed structure 10 includes two relatively arranged fixing components 110; the two ends of the connecting component 20 are respectively arranged on the two fixing components 110; the sensing component 30 is arranged on the fixed structure 10, and the sensing component 30 is used to sense the blinking action of the subject and generate a corresponding sensing electrical signal; the controller is used to receive the sensing electrical signal generated by the sensing component 30, and monitor the blinking frequency of the subject according to the sensing electrical signal; wherein the connecting component 20 can adjust the distance between the two fixing components 110 so that the two fixing components 110 cooperate to clamp the frame 40 worn by the subject.

[0042] As can be seen from the above, the two fixing components 110 cooperate to clamp the frame 40 worn by the test subject, so as to realize the installation of the blinking frequency monitoring device on the frame 40 worn by the test subject. During the test, the test subject can move normally, and the measured blinking frequency can reflect the blinking frequency of the test subject in normal work and life, with high accuracy. The distance between the two fixing components 110 is adjusted by the connecting component 20, so that the blinking frequency monitoring device can be installed on a variety of frames 40, and the test subject can adjust it according to the frame 40 worn, which has strong practicality and versatility; the blinking action of the test subject is sensed by the sensing component 30. Compared with the existing blinking frequency test instrument that uses a camera to collect blinking actions and needs to use image processing algorithms to process the video later, the present application uses a sensing component 30, which occupies a smaller volume and has lower cost, and does not require the test subject to be fixed in front of the instrument and stare at the camera, which has higher flexibility.

[0043] like Figure 1 , Figure 2 As shown, the blink frequency monitoring device includes a fixing structure 10, a connecting component 20, a sensing component 30 and a controller; the fixing structure 10 includes two fixing components 110 arranged opposite to each other; and two ends of the connecting component 20 are respectively arranged on the two fixing components 110.

[0044] It should be noted that if Figure 1 As shown, the first direction is parallel to the Z direction, the second direction is parallel to the X direction, and the first direction is perpendicular to the second direction; the two fixing components 110 can be arranged relative to each other in the first direction, and the length of the fixing components 110 in the second direction is not less than 50 mm to ensure the normal field of vision of the person to be tested and avoid blocking the person to be tested from observing the outside world.

[0045] It should also be noted that the material of the fixing component 110 includes but is not limited to ABS plastic and PC plastic (polycarbonate).

[0046] The sensing component 30 is disposed on the fixed structure 10, and is used to sense the blinking action of the subject and generate a corresponding sensing electrical signal; the controller is used to receive the sensing electrical signal generated by the sensing component 30, and monitor the blinking frequency of the subject according to the sensing electrical signal.

[0047] The blinking action of the subject is sensed by the sensing component 30. Compared with the existing blinking frequency test instruments that use a camera to capture the blinking action and need to use an image processing algorithm to process the video later, the sensing component 30 used in the present application occupies a smaller volume and has a lower cost. There is no need for the subject to be fixed in front of the instrument and staring at the camera, so it is more flexible.

[0048] It should be noted that the controller includes but is not limited to a single chip microcomputer, and the controller can be disposed in the auxiliary part 1102 .

[0049] The connecting component 20 can adjust the distance between the two fixing components 110 so that the two fixing components 110 cooperate to clamp the frame 40 worn by the subject.

[0050] The two fixing components 110 cooperate to clamp the frame 40 worn by the test subject, so that the blinking frequency monitoring device can be installed on the frame 40 worn by the test subject. During the test, the test subject can move normally, and the measured blinking frequency can reflect the blinking frequency of the test subject in normal work and life, with high accuracy. The distance between the two fixing components 110 is adjusted by the connecting component 20, so that the blinking frequency monitoring device can be installed on a variety of frames 40, and the test subject can adjust it according to the frame 40 worn, which has strong practicality and versatility.

[0051] It should be noted that the blinking frequency monitoring device can be installed on one lens ring of the frame 40. Because both eyes usually open and close at the same time, it is sufficient to monitor the blinking frequency of only one eye, thereby saving more power and space. Of course, a blinking frequency monitoring device can also be installed on each of the two lens rings of the frame 40 to monitor the blinking frequency of both eyes.

[0052] It should also be noted that the lens may be installed in the lens ring of the frame 40 or not, and this application does not impose any limitation thereto, as long as the frame 40 can be worn on the eyes of the person being tested.

[0053] like Figure 3 , Figure 4 As shown, in some embodiments, the connecting component 20 includes a guide rod 210 and an elastic member 220; one end of the guide rod 210 is inserted into one of the two fixing components 110, and the other end is inserted into the other fixing component 110 of the two fixing components 110; the elastic member 220 is sleeved on the guide rod 210, one end of the elastic member 220 is connected to one of the two fixing components 110, and the other end is connected to the other fixing component 110 of the two fixing components 110.

[0054] When adjusting the distance between the two fixed components 110, the guide rod 210 guides the movement of the two fixed components 110 to avoid the two guide components being offset and affecting the sensing component 30 from sensing the blinking action; the elastic force generated by the elastic deformation of the elastic member 220 allows the two fixed components 110 to clamp the frame 40, thereby fixing the blinking frequency sensing structure.

[0055] It should be noted that the elastic member 220 is a spring. It should also be noted that when the two fixing assemblies 110 clamp the lens frame 40 , the elastic member 220 is in a stretched state, and the elastic force generated causes the fixing assemblies 110 to clamp the lens frame 40 .

[0056] like Figure 2 , Figure 4 As shown, in some embodiments, the fixing component 110 includes a main body 1101 and an auxiliary part 1102; the main body 1101 is a non-closed annular structure; the auxiliary part 1102 is arranged on a side of the main body 1101 away from the connecting component 20; wherein, guide grooves 1103 for inserting the guide rod 210 are arranged at both ends of the main body 1101, and the extension direction of the guide groove 1103 is parallel to the extension direction of the guide rod 210.

[0057] The main body 1101 is provided to provide a structural basis for the installation of the connecting component 20 and the fixation of the blinking fixed frequency monitoring structure. The auxiliary part 1102 is provided to provide a structural basis for the installation of the sensing component 30.

[0058] It should be noted that the shape of the main body 1101 can be set according to the shape of the lens ring of the lens frame 40, for example, Figure 2 As shown, the main body 1101 includes but is not limited to a non-closed circular structure, and the central angle of the main body 1101 is less than 180°; the guide groove 1103 and the guide rod 210 can be arc-shaped, the center of the guide rod 210 coincides with the center of the main body 1101, and the radius of the guide rod 210 coincides with the radius of the main body 1101, so as to guide the movement of the fixed component 110.

[0059] It should also be noted that the cross section of the guide groove 1103 is circular, and the diameter of the guide groove 1103 is larger than the outer diameter of the guide rod 210 to reserve space for installing the elastic member 220. Both ends of the elastic member 220 can be located in the guide grooves 1103 of the two main bodies 1101 respectively.

[0060] It should also be noted that the guide rod 210 may be a hollow structure for routing wires and providing a structural basis for electrical connection. For example, the guide rod 210 is made of a thin-walled steel pipe.

[0061] like Figure 5-Figure 7 As shown, in some embodiments, the sensing component 30 includes a transmitter 310 and a receiver 320 respectively located on both sides of the frame 40 and arranged opposite to each other. The transmitter 310 is arranged on one of the two fixed components 110, and the receiver 320 is arranged on the other of the two fixed components 110, so as to generate a sensing electrical signal based on the occlusion of the light path triggered by the blinking action of the subject.

[0062] The blinking action of the subject will cause a sudden change in the light intensity received by the receiver 320, thereby generating a sensing electrical signal and recording the blinking action, which is simple, convenient and accurate.

[0063] It should be noted that the transmitter 310 is an LED light source that can emit invisible infrared light, for example, near-infrared light of 850nm or 950nm; the receiver 320 is an infrared light receiver 320. Since the eyes of the subject are open most of the time, the receiver 320 receives a relatively stable light intensity, and the voltage signal converted from the light intensity is also relatively stable and unchanged. The receiver 320 processes the voltage signal, outputs 0 and transmits it to the controller. When the subject blinks, the light intensity received by the receiver 320 will suddenly change, and the voltage signal converted from the light intensity will also suddenly change. The receiver 320 processes the voltage signal, outputs 1 and transmits it to the controller, that is, triggers the generation of a sensing electrical signal and transmits the sensing electrical signal to the controller. The controller counts it as one blink, and the calculator can calculate the blinking frequency according to the preset duration and the number of blinks recorded within the preset duration.

[0064] It should also be noted that the sampling frequency of the receiver 320 can be set as needed. For example, the sampling frequency of the receiver 320 is 100 Hz.

[0065] like Figure 5 , Figure 6 As shown, in some embodiments, the fixing assembly 110 includes a rotating member 120 rotatably disposed on the auxiliary portion 1102 , and the transmitter 310 and the receiver 320 are both disposed on the rotating member 120 to adjust the transmitting angle of the transmitter 310 and the receiving angle of the receiver 320 .

[0066] By setting the rotating member 120, the transmitter 310 and the receiver 320 can be adjusted as needed to ensure that the invisible infrared light emitted by the transmitter 310 is reflected to the receiver 320 after passing through the eye surface of the person to be measured, thereby improving the accuracy of the measurement. At the same time, the flexibility, practicality and versatility of the present application are further improved.

[0067] It should be noted that the rotating member 120 can be a damped rotating shaft, which is a purchased part. The damped rotating shaft bears both bending moment and torque during rotation and can maintain a fixed angle. The structure of the damped rotating shaft is prior art and will not be described in detail in this application.

[0068] like Figure 5-Figure 7 As shown, in some embodiments, the blink frequency monitoring device includes a shading plate 50, which is disposed on the auxiliary portion 1102 to block the light path of the sensing component 30 on the side close to the frame 40.

[0069] By setting the light shielding plate 50, the light emitted by the transmitter 310 is prevented from directly entering the receiver 320 without passing through the eye surface of the subject to be tested. After the light path of the side of the sensing component 30 close to the frame 40 is blocked, the side of the transmitter 310 close to the eye surface of the subject to be tested is used as the light source, ensuring that the light emitted by the transmitter 310 passes through the eye surface of the subject to be tested and then reflects to the receiver 320. At the same time, stray light in the external environment can be prevented from directly entering the receiver 320, thereby further improving the accuracy of the measurement.

[0070] It should be noted that the shading plate 50 may be a black shading plate 50 to improve the shading effect.

[0071] It should also be noted that a shading plate 50 is provided on both auxiliary parts 1102 to respectively block the side of the transmitter 310 close to the frame 40 and the side of the receiver 320 close to the frame 40, thereby blocking the light path of the side of the sensing component 30 close to the frame 40.

[0072] In some embodiments, a distance between the auxiliary portion 1102 of one of the two fixing assemblies 110 and the auxiliary portion 1102 of the other of the two fixing assemblies 110 is 30 mm-50 mm.

[0073] It should be noted that by limiting the distance between the two auxiliary parts 1102, the adjustable range of the connecting component 20 is limited to prevent the distance between the two fixing components 110 in the first direction from being too large or too small. When the distance is too large, the length of the blink frequency monitoring device in the first direction will increase, and the volume will increase, which will bring inconvenience to the person being tested; when the distance is too small, it will affect the person being tested's field of vision, causing inconvenience to the person being tested.

[0074] In some embodiments, the blink frequency monitoring device includes a power supply disposed in the auxiliary portion 1102, and the power supply is electrically connected to the sensing component 30 and the controller respectively.

[0075] The sensing component 30 and the controller are powered by a power source, which includes but is not limited to a lithium battery.

[0076] like Figure 2 As shown, in some embodiments, a charging port 60 is provided on the auxiliary portion 1102 , and the charging port 60 is electrically connected to a power source.

[0077] In some embodiments, the blinking frequency monitoring device includes a reminder module, which is electrically connected to a controller. The controller can trigger the reminder module to operate according to the blinking frequency.

[0078] It should be noted that the reminder module is electrically connected to the power supply.

[0079] It should also be noted that when the controller detects that the blinking frequency of the subject is abnormal, the controller can control the reminder module to work, and the reminder module can remind the subject through vibration or voice. For example, the normal blinking frequency of the subject is 15-20 times per minute. The blinking frequency of the subject is less than 10 times per minute and more than 30 times per minute, which are both abnormal blinking frequencies.

[0080] It should also be noted that the blink frequency monitoring device includes a Bluetooth module disposed in the auxiliary part 1102, and the Bluetooth module can be connected to an electronic device to transmit the blink frequency of the subject to be tested to the electronic device. For example, the electronic device includes but is not limited to a computer and a mobile phone.

[0081] It should also be noted that the blink frequency monitoring device includes a switch disposed on the auxiliary portion 1102, and the switch can control the opening and closing of the blink frequency monitoring device.

[0082] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A blink frequency monitoring device, characterized in that: include: A fixing structure, comprising two fixing components arranged opposite to each other; A connecting component, two ends of which are respectively arranged on the two fixing components; A sensing component is disposed on the fixed structure, and is used to sense the blinking action of the subject and generate a corresponding sensing electrical signal; as well as A controller, used for receiving the sensing electrical signal generated by the sensing component, and monitoring the blinking frequency of the subject according to the sensing electrical signal; Wherein, the connecting component can adjust the distance between the two fixing components so that the two fixing components cooperate to clamp the frame worn by the subject.

2. The blink frequency monitoring device according to claim 1, characterized in that: The connection component comprises: a guide rod, one end of which is inserted into one of the two fixing assemblies, and the other end of which is inserted into the other of the two fixing assemblies; and An elastic member is sleeved on the guide rod, one end of the elastic member is connected to one of the two fixing assemblies, and the other end of the elastic member is connected to the other of the two fixing assemblies.

3. The blink frequency monitoring device according to claim 2, characterized in that: The fixing assembly comprises: The main body is a non-closed annular structure; and An auxiliary portion, disposed on a side of the main body away from the connecting assembly; Wherein, guide grooves for inserting the guide rods are arranged at both ends of the main body, and the extending direction of the guide grooves is parallel to the extending direction of the guide rods.

4. The blink frequency monitoring device according to claim 3, characterized in that: The sensing component includes a transmitter and a receiver which are respectively located on both sides of the frame and arranged opposite to each other. The transmitter is arranged on one of the two fixed components, and the receiver is arranged on the other of the two fixed components to generate the sensing electrical signal based on the blocking light path triggering of the blinking action of the subject.

5. The blink frequency monitoring device according to claim 4, characterized in that: The fixing assembly includes a rotating member rotatably arranged on the auxiliary part, and the transmitter and the receiver are both arranged on the rotating member to adjust the transmitting angle of the transmitter and the receiving angle of the receiver.

6. The blink frequency monitoring device according to claim 4, characterized in that: The blink frequency monitoring device comprises a shading plate, which is arranged on the auxiliary part to block the light path of the sensing component on one side close to the frame.

7. The blink frequency monitoring device according to claim 3, characterized in that: A distance between the auxiliary portion of one of the two fixing assemblies and the auxiliary portion of the other of the two fixing assemblies is 30 mm to 50 mm.

8. The blink frequency monitoring device according to any one of claims 3 to 7, characterized in that: The blink frequency monitoring device includes a power supply arranged in the auxiliary part, and the power supply is electrically connected to the sensing component and the controller respectively.

9. The blink frequency monitoring device according to claim 8, characterized in that: The auxiliary part is provided with a charging port, and the charging port is electrically connected to the power source.

10. The blink frequency monitoring device according to any one of claims 1 to 7, characterized in that: The blink frequency monitoring device comprises a reminder module, which is electrically connected to the controller. The controller can trigger the reminder module to operate according to the blink frequency.

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