CN113729619B - Portable fundus camera and method of locking/unlocking the same - Google Patents
Portable fundus camera and method of locking/unlocking the same Download PDFInfo
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- CN113729619B CN113729619B CN202111132257.9A CN202111132257A CN113729619B CN 113729619 B CN113729619 B CN 113729619B CN 202111132257 A CN202111132257 A CN 202111132257A CN 113729619 B CN113729619 B CN 113729619B
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- 210000001525 retina Anatomy 0.000 claims description 6
- 238000012856 packing Methods 0.000 abstract description 17
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/04—Constructional details of apparatus
- A61B2560/0431—Portable apparatus, e.g. comprising a handle or case
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- Ophthalmology & Optometry (AREA)
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- Biomedical Technology (AREA)
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Abstract
The present invention relates to a portable fundus camera, which includes: a housing; the imaging module is accommodated in the shell; a three degree of freedom motion module movably disposed on the housing, configured to allow the imaging module to move in a lateral, longitudinal, and vertical direction relative to the housing; a positioning unit that aligns the imaging module with the pupil; and a locking/unlocking mechanism configured to lock or unlock the imaging module at a predetermined position with respect to the housing. Thus, by providing the locking/unlocking mechanism in the portable fundus camera, the ordinary user is allowed to perform the packing and unpacking operation of the portable fundus camera by himself without special training. Further, it also relates to a method of locking/unlocking the portable fundus camera.
Description
Technical Field
The invention relates to a portable fundus camera and a method for locking/unlocking the portable fundus camera, and relates to the technical field of medical instruments.
Background
The fundus camera is mainly used for shooting retina images of human eyes so as to facilitate medical staff to check fundus diseases or assist the medical staff to judge the conditions of other organs. The blood vessel of the fundus is the only blood vessel directly observed through the body surface of a human body, medical staff can check whether the optic nerve, retina, choroid and refractive medium of the fundus have lesions or not through a fundus camera, and diagnosis and disease judgment can be carried out on other system diseases through the assistance of the fundus camera at the same time, for example, cerebral infarction, cerebral hemorrhage, cerebral arteriosclerosis, brain tumor, diabetes, nephropathy, hypertension, retinopathy of prematurity, glaucoma, senile macular degeneration and the like are detected through screening retina photos. The earlier detection of these diseases is more beneficial to clinical treatment, so fundus cameras are widely used for clinical screening of fundus diseases and become an indispensable medical instrument.
The existing fundus camera can automatically shoot fundus images, and the automatic shooting process mainly involves automatically aligning a main lens to a pupil, automatically adjusting the axial distance (working distance) between the lens and the pupil, and automatically adjusting the focal length. The camera can be provided with an imaging module and a plurality of auxiliary optical devices, wherein the imaging module is arranged on a platform capable of moving in three directions X, Y, Z and is used for shooting fundus; the secondary optics are used for focusing, adjusting working distance, etc. That is, as a precise optical instrument, the relative positional relationship between the components of the fundus camera has a very important and realistic meaning for accurate diagnosis thereof.
The existing fundus photographing camera is large in size and complex in structure, and is inconvenient to carry to a base layer to carry out general screening and screening of fundus lesions for masses at the base layer. For example, the fundus camera disclosed in chinese patent publication No. CN102613957a mainly comprises a photographing optical system, an illumination optical system, a CPU motherboard, etc., where the optical path of the photographing optical system is relatively complex, the illumination portion designs a dedicated illumination optical system and an illumination light source, and the illumination light source is formed by using a light emitting diode array. When a user uses the fundus camera, the user often considers that a very huge aviation case is shipped and wrapped by a buffer material such as foam or an air cushion and then transported, so that the transportation safety is ensured by increasing the transportation protection cost, the cost efficiency is very low, and the difficulty and the workload of unpacking the fundus camera during and after transportation are also obviously increased. The difficulty in economy and use of the fundus camera applied to vast masses in rural areas, remote areas and the like is obviously increased, and the popularization and application of the medical concept of disease screening by the fundus camera are not facilitated.
With miniaturization of fundus cameras, more and more opportunities exist for transporting and carrying fundus cameras between different positions in daily work, and if a packing box and buffer material packing and unpacking manner is used, the following challenges are brought to users of fundus cameras: very safe safeguards and high safeguarding costs are required. In particular, since shocks or vibrations to the fundus camera are inevitably caused during transportation and handling, such shocks or vibrations will likely undesirably change the relative positional relationship between the components of the fundus camera. Further, due to the high requirement of the packing and unpacking operation of the fundus camera, professional personnel are required for the operation in daily work, and normal use cannot be performed by a common user. Therefore, the high-quality medical service and advanced medical resources are concentrated in large-scale urban hospitals and cannot be brought to the masses of people in rural areas, remote areas and the like. If the ordinary users are not specially trained, there are cases where some users transport only after simple packaging, which has a great hidden danger to the transportation safety of the bottom-of-eye camera.
With miniaturization of fundus cameras, it is desirable to be able to perform unpacking operation of fundus cameras with little structural variation, at low cost, and with simple operation. In particular, the unpacking operation of the fundus camera is achieved without undesirably affecting the product appearance of the fundus camera.
Meanwhile, the unpacking requirements of the fundus camera in different application scenes are comprehensively considered, so that reliable unpacking operation in various application scenes is ensured all the time, and particularly, the use habit of a user is expected to be met.
Based on this, the related art has been working to design a portable fundus camera to overcome the drawbacks of the prior art.
Disclosure of Invention
It is therefore an object of the present invention to provide a portable fundus camera, by which the above-mentioned disadvantages of the prior art are overcome.
In order to achieve the above task, the present invention provides a portable fundus camera including a housing provided with an observation window; the imaging module is accommodated in the shell and shoots fundus retina of eyes of a shot person positioned in the observation window through the observation window; a three-degree-of-freedom motion module movably disposed on the housing, the three-degree-of-freedom motion module having the imaging module mounted thereon and configured to allow the imaging module to move in a lateral, longitudinal, and vertical direction relative to the housing; the positioning unit is used for controlling the three-degree-of-freedom motion module to drive the imaging module to move based on the pupil position of the eyes of the shot person, so that the imaging module is aligned to the pupil; and a locking/unlocking mechanism configured to lock or unlock the imaging module at a predetermined position with respect to the housing, wherein the locking/unlocking mechanism includes: the portable fundus camera comprises a first locking hole arranged on the imaging module, a second locking hole arranged on the shell and a locking pin capable of being inserted into the first locking hole through the second locking hole, wherein the portable fundus camera is locked when the locking pin is inserted into the first locking hole of the imaging module and is unlocked when the portable fundus camera is withdrawn from the first locking hole of the imaging module.
Thus, unlike the fundus camera of the prior art, the present invention provides a portable fundus camera that can be carried by a user with low cost, low difficulty in handling, and convenience to the user to systematically address the various deficiencies noted in the background art. In particular, the portable fundus camera does not need to use expensive and complicated packaging modes such as a packaging box and a buffer material in unpacking or subsequent logistics transportation, but can still reliably ensure that the precise machine and photoelectricity integrated instrument such as the fundus camera cannot be undesirably damaged in the logistics process.
By providing a locking/unlocking mechanism in the portable fundus camera, it is possible for an ordinary user to perform the packing and unpacking operation of the portable fundus camera by himself without special training. When it is necessary to package the portable fundus camera, the imaging module of the portable fundus camera may be moved to a predetermined position with respect to the housing automatically or by a simple operation of a user, and then the portable fundus camera is locked by means of the locking/unlocking mechanism to allow packaging and transportation. After the transportation is finished, the locking/unlocking mechanism is unlocked and unpacked, so that the full-automatic camera can be used in a normal working mode. The portable fundus camera according to the present invention has a simple structure and minimizes the risk of damage during the transportation process, thus being easy to manufacture at low cost and convenient for the user to transport, which is advantageous for the benefit of the portable fundus camera to the vast masses in rural areas, remote areas, etc.
In a preferred embodiment, wherein the three degree of freedom motion module is located between the imaging module and the housing, and the locking/unlocking mechanism further comprises a through hole provided on the three degree of freedom motion module. Thus, the above-described unpacking function can be imparted to the fundus camera with only a small structural change to the fundus camera, and the attachment of the lock/unlock mechanism does not affect the product appearance of the fundus camera.
In a preferred embodiment, the three-degree-of-freedom motion module comprises at least one boss extending in a transverse direction to allow the three-degree-of-freedom motion module to move the imaging module in a transverse direction relative to the housing, wherein the boss forms a snap fit with the housing. Thereby, a reliable driving of the imaging module is achieved in a cost-effective manner.
In a preferred embodiment, the three-degree-of-freedom motion module comprises at least one annular boss extending therefrom to allow the three-degree-of-freedom motion module to move the imaging module in a lateral or longitudinal direction relative to the housing, wherein the boss forms a snap fit with the housing. Thereby, a reliable driving of the imaging module is achieved in a cost-effective manner.
In a preferred embodiment, a first sensor provided in the first locking hole for recognizing whether the locking pin has been inserted into or removed from the first locking hole is further included. Thus, in the present invention, the fundus camera is locked with a single locking pin and the reliable locking of the fundus camera is sensed without adding an additional switch for sensing the locking of the fundus camera, so that the hardware cost of the fundus camera can be reduced.
In a preferred embodiment, the three degree of freedom movement module is provided with a pair of vertically arranged rails, wherein the imaging module is arranged through the rails to allow vertical movement relative to the housing, wherein a second sensor is arranged above or below the imaging module to identify that the imaging module is in a predetermined position vertically. Therefore, the second sensor at the preset position is utilized in the invention, the control strategy of the fundus camera can be enriched by means of low hardware cost, so that whether the fundus camera is reliably locked or unlocked can be sensed, and the hardware cost of the fundus camera can be effectively reduced.
In a preferred embodiment, a third sensor for identifying that the imaging module is in a predetermined position in the lateral or longitudinal direction is provided on the housing.
According to another aspect of the present invention, there is also provided a method of locking/unlocking a portable fundus camera, wherein the method includes:
step 101, sending a locking signal to the fundus camera by means of external equipment or a touch key;
102, moving the imaging module to a preset position by the three-degree-of-freedom motion module of the fundus camera according to a locking signal;
step 103, the fundus camera prompts a user to perform locking operation on the locking/unlocking mechanism;
104, judging whether the user finishes the locking operation or not by the fundus camera, and if so, turning off the fundus camera; if the determination is no, go to step 105;
step 105, the fundus camera checks whether the imaging module has accurately moved to a preset position, if yes, the fundus camera reminds and waits for the next locking operation of the user, and if no, step 106 is performed;
step 106, the fundus camera prompts the user to enter a fine adjustment mode to automatically move the imaging module to the preset position again, updates the position after fine adjustment to the latest preset position, and jumps to step 104. Therefore, the self-service locking of the fundus camera can be realized without excessive intervention of a user, so that the operation difficulty of the user is reduced to a great extent, the fundus camera can be conveniently used even in a basic medical institution, excessive training cost is not required, and the self-service locking device has good human-machine friendliness.
In a preferred embodiment, in step 104, before the fundus camera is turned off, the three-degree-of-freedom motion module attempts to move an imaging module to determine whether the locking/unlocking mechanism is already in a locked state, if yes, the fundus camera is turned off, and if no, step 105 is performed.
In a preferred embodiment, the method further comprises the step of unlocking the locked portable fundus camera:
step 201, restarting the turned-off fundus camera, and sending an unlocking signal to the locked portable fundus camera by means of an external device or a touch key:
step 202, the fundus camera prompts a user to unlock the locking/unlocking mechanism;
step 203, the fundus camera checks whether the locking/unlocking mechanism is in an unlocking state, if yes, the imaging module is moved to a working state, and if no, step 204 is performed;
step 204, the fundus camera prompts the user to incorrectly unlock the locking/unlocking mechanism and prompts the user to unlock the locking/unlocking mechanism again, and then jumps to step 203.
In a preferred embodiment, wherein in step 203, the three degree of freedom motion module attempts to move the imaging module to a preset position that triggers the second sensor to determine whether the locking/unlocking mechanism is already in an unlocked state.
Additional features and advantages of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following, or may be learned from the practice of the invention.
Drawings
Embodiments of the present invention are described in detail below with reference to the attached drawing figures, wherein:
fig. 1 is a front cross-sectional view of a package structure of a portable fundus camera provided in an embodiment of the present invention.
Fig. 2 is a schematic view of the portable fundus camera after being moved to a predetermined position.
Fig. 3 is a schematic view of the portable fundus camera after packaging at a predetermined position.
Fig. 4 is a flowchart of the packing (locking) operation of the portable fundus camera of the present invention.
Fig. 5 is a flowchart of the unpacking (unlocking) operation of the portable fundus camera of the present invention.
Fig. 6 is a schematic view of a remotely operated portable fundus camera of the present invention.
Description of the reference numerals
1. An imaging module; 2. the three-degree-of-freedom motion module is as follows: 3. a guide rail; 4. a housing; 5. a boss; 6. a second locking hole; 7. a through hole; 8. a first locking hole; 9. a locking pin; 10. user operation unit: 11. a protruding portion; 12. a first diameter section; 13. a second diameter section 14, a fundus camera; 15. a server; 16. terminal
Detailed Description
An exemplary scheme of a portable fundus camera according to the present invention will now be described in detail with reference to the accompanying drawings. The drawings are provided to present various embodiments of the invention, but are not necessarily drawn to scale and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the present disclosure. The position of part of components in the drawings can be adjusted according to actual requirements on the premise of not affecting the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification do not necessarily all refer to the figures or examples.
Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "upper", "lower" and other directional terms, will be understood to have their normal meaning and refer to those directions as they would be when viewing the drawings. Unless otherwise indicated, directional terms described in this specification are essentially in accordance with conventional directions as understood by those skilled in the art.
The terms "first," "second," and the like as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Referring first to fig. 1, there is shown a portable fundus camera according to a preferred embodiment of the present invention, which can allow an average user to perform a packing and unpacking operation of the portable fundus camera by himself without special training. The portable fundus camera of the present invention will be described in detail with reference to fig. 1 as follows:
in fig. 1, there is shown a portable fundus camera including a housing 4, wherein the housing 4 is provided with a viewing window for a patient or a patient's observation, a three-degree-of-freedom movement module 2 movably provided on the housing 4, wherein an imaging module 1 is mounted on the three-degree-of-freedom movement module 2, and the three-degree-of-freedom movement module 2 is capable of allowing the imaging module 1 to move in a lateral direction, a longitudinal direction, and a vertical direction with respect to the housing 4, which may be represented by a left-right direction (hereinafter may also be referred to as an X direction) in fig. 1, a paper surface direction (hereinafter may also be referred to as a Z direction) in fig. 1, and an up-down direction (hereinafter may also be referred to as a Y direction) in fig. 1, respectively, for ease of understanding. Here, the imaging module 1 is internally provided with an illumination assembly, a focusing assembly, a lens (objective lens), an optical lens group, an imaging detector, and the like, and the internal structure of the imaging module 1 can be referred to in chinese patent document CN111134616a, the contents of which are incorporated herein by reference in their entirety. The three-degree-of-freedom motion module 2 and the imaging module 1 are located inside the housing 4. Preferably, a face-contacting assembly sealingly connected to the front of the housing 4 may be provided, the face-contacting assembly comprising a face-contacting body and a viewing window through-hole formed in the face-contacting body for receiving the eyes of the subject when the eyes are in contact therewith. The surface-mounted component is used as a component for contacting eyes of a person to be photographed, and the imaging module 1 acquires fundus retina images of the person to be photographed through the through holes of the surface-mounted component.
The surface of the mask body facing away from the imaging module 1 is configured in a shape that conforms to the contour of the face around the eyes of the subject. Specifically, the mask assembly is concave to fit the arc of the human head, and the size of the through hole can at least accommodate both eyes when the eyes of the tested person fit the mask assembly. The automatic fundus camera is also provided with a positioning unit, wherein the positioning unit is used for controlling the three-degree-of-freedom motion module 2 to drive the imaging module 1 to move based on the pupil position of the eyes of the photographed person, so that the imaging module 1 is aligned with the pupil.
Here, the three-degree-of-freedom motion module 2 is used to control the imaging module 1 to move in a three-dimensional space, which is exemplified in fig. 1, for example, in the left-right direction (i.e., X direction) and the up-down direction (i.e., Y direction) in fig. 1. As a specific embodiment, the three-degree-of-freedom motion module 2 may comprise at least one boss 5 extending in a lateral direction, wherein the bosses 5 may be arranged in pairs, for example, to allow the three-degree-of-freedom motion module to move the imaging module laterally with respect to the housing, wherein the bosses form a snap fit with the housing. The movement of the imaging module 1 in the left-right direction of fig. 1 can thereby be controlled by means of the boss 5, and further, on the three-degree-of-freedom movement module 2, there can be provided a pair of guide rails 3 arranged vertically, wherein the imaging module 1 passes through the guide rails 3 to allow vertical movement thereof with respect to the housing 4.
Alternatively, the three-degree-of-freedom module 2 may also comprise at least one annular boss extending therefrom, wherein the boss allows the three-degree-of-freedom movement module 2 to move the imaging module 1 in a lateral or longitudinal direction relative to the housing 4, wherein the boss and the housing may also form a snap fit. Here, too, pairs of guide rails 3 arranged vertically can be provided on the three-degree-of-freedom movement module 2, wherein the imaging module 1 is arranged through the guide rails 3 to allow its vertical movement relative to the housing 4.
In order to allow the portable fundus camera to allow an ordinary user to perform a packing and unpacking operation of the portable fundus camera by himself without special training, a locking/unlocking mechanism is added to the portable fundus camera, wherein the locking/unlocking mechanism is configured to lock or unlock the imaging module at a predetermined position with respect to the housing. Specifically, when it is necessary to package the portable fundus camera, the imaging module of the portable fundus camera may be moved to a predetermined position with respect to the housing automatically or by a simple operation of the user, and then the portable fundus camera is locked by means of the locking/unlocking mechanism to allow packaging and transportation. After the transportation is finished, the locking/unlocking mechanism is unlocked and unpacked, so that the full-automatic camera can be used in a normal working mode.
As shown in fig. 1 and 2, the locking/unlocking mechanism includes: the first locking hole 8 provided at the bottom of the imaging module 1, the second locking hole 6 provided on the housing 4, and the locking pin 9 capable of being inserted into the first locking hole 8 through the second locking hole 6, and further, in the case where the three-degree-of-freedom moving module 2 is located between the imaging module 1 and the housing 4, the locking/unlocking mechanism further includes a through hole 7 provided on the three-degree-of-freedom moving module 2. Of course, the through-hole 7 is not necessary because the location where the locking and unlocking operations can be performed from the outside is numerous when the imaging module is located at a predetermined position with respect to the housing 4 (this allows the user to insert the locking pin from a plurality of different orientations to position the imaging module 1, which reduces the difficulty of the user's operation), without having to have the three-degree-of-freedom movement module 2 located between the imaging module 1 and the housing 4 as shown in fig. 1-2.
The packing (locking) and unpacking (unlocking) methods of the portable fundus camera of the present invention are described below with reference to fig. 2 to 3:
when the portable fundus camera is required to be packaged (locked) by transportation, the three-degree-of-freedom movement module 2 may be moved by a driving mechanism, not shown, such as a motor, to a predetermined position, in which the first locking hole 8, the through hole 7, and the second locking hole 6 are aligned, with respect to the housing 4. Specifically, in the present embodiment, the predetermined positions are the intermediate position of the imaging module 1 with respect to the housing 4 in the left-right direction (X direction), the bottom-most position thereof in the up-down direction (Y direction) (closest to the housing 4), and the rearmost position in the front-rear direction (Z direction). Designing the predetermined position as described above has an advantage in that, since the imaging module 1 of the fundus camera is provided with a lens having an elongated cylindrical structure, when the predetermined position is designed to be a middle position in the left-right direction and a rearmost position in the front-rear direction, the external space volume of the portable fundus camera is minimized at this time, which is very advantageous for later shipping packaging. Further, since the imaging module 1 is located at the bottommost position thereof closest to the housing 4 when in the predetermined position, it is convenient for the user to securely insert the locking pin 9 into the first locking hole 8. At the same time, since the gap between the imaging module 1 and the housing 4 is as small as possible at this time, this achieves a good overall appearance of the product in the packed state.
Next, a packing (locking) operation will be described with reference to fig. 3, as shown in fig. 3, at the above-described predetermined position, the user inserts the locking pin 9 from the outside of the housing 4 to the first locking hole 8 through the second locking hole 6 and the through hole 7. The locking pin 9 may here comprise a user-operated portion 10 and a projection 11, wherein the projection 11 has a first diameter section 12 and a second diameter section 13, and the diameter of the first diameter section 12 is greater than the diameter of the second diameter section 13, the second diameter section 13 being configured for insertion into the first locking hole 8. By designing the projection 11 with a first diameter section 12 and a second diameter section 13 of smaller diameter, it is possible to lock the imaging module 1 in a reliable manner, while also reducing to some extent the accuracy requirements for the alignment of the first locking hole 8, the through hole 7 and the second locking hole 6. In this case, the first diameter section 12 is provided with a thread which is in threaded engagement with the first locking hole 8, so that the imaging module 1 can be locked in the horizontal and vertical directions relative to the housing 4 by a simple screw-down operation by the user, and since the imaging module 1 is fixedly arranged on the three-degree-of-freedom movement module, all mechanical and optical components of the portable fundus camera are locked to each other, which allows reliable packaging and transport.
After the transportation is completed, the user can reversely unscrew the locking pin 9 to withdraw the second diameter section 13 from the first locking hole 8, so that all mechanical and optical components of the portable fundus camera are unlocked from each other, and normal use is allowed at this time. That is, the portable fundus camera is locked when the locking pin 9 is inserted into the first locking hole 8 of the imaging module 1 and unlocked when the first locking hole 8 of the imaging module 1 is withdrawn.
In order to facilitate monitoring of the movement of the three degree of freedom movement module 2 and the imaging module 1, sensors are optionally provided at the housing 4 or the three degree of freedom movement module 2. Specifically, the sensor may be an electromagnetic sensor, and senses the positions of the imaging module 1 and the three-degree-of-freedom motion module 2 moving relative to the housing 4 according to electromagnetic induction signals. In the present embodiment, for example, 2 sensors may be provided, which are respectively provided at both sides in the lateral direction of the three-degree-of-freedom movement module 2, to detect movement of the three-degree-of-freedom movement module 2 in the lateral direction (X direction), thereby judging whether or not the three of the first locking hole 8, the through hole 7, and the second locking hole 6 are aligned in the lateral direction. Further, it is also possible to provide 2 sensors in the longitudinal direction (Z direction) which are provided on both sides of the three-degree-of-freedom movement module 2 in the longitudinal direction, respectively, so as to determine whether or not the first locking hole 8, the through hole 7, and the second locking hole 6 are aligned in the longitudinal direction. Further, a second sensor that recognizes that the imaging module 1 is at a predetermined position in the vertical direction is provided above or below the imaging module 1.
In order to simplify the operation difficulty of a user, the portable fundus camera may have an automatic packing (locking) mode, that is, a predetermined position capable of being locked is used as a training result in an artificial intelligence manner, so that the machine has a memory function for the predetermined position, and thus the machine can be precisely packed in the memory position directly at the next time. The automatic packing (locking) method of the portable fundus camera will be further described with reference to fig. 4.
As shown in fig. 4, first, the user performs a power-on operation on the portable fundus camera, thereby powering on the portable fundus camera. After the fundus camera is started up, the fundus camera is initialized and positioned according to the three-dimensional mechanism diagram by default, namely, the fundus camera is brought into a position (namely, a preset position different from the fundus camera) ready to start normal operation according to factory default settings.
Then, step 101 is performed, and if a packaging (locking) operation such as logistics transportation is required for the fundus camera, the packaging operation of the portable fundus camera may be triggered by a key input of the user or a control instruction from an external device (for example, from a terminal described in detail below).
Next, step 102 is entered, in which the fundus camera is automatically moved toward a predetermined position in accordance with the memorized position (which is memorized here as a training result after a plurality of training of artificial intelligence): wherein the imaging module 1 is moved to the structural center of the fundus camera in the left-right direction (X-axis direction) in fig. 1, that is, the intermediate position; moving the imaging module 1 to a bottom position of the fundus camera, i.e., a position vertically closest to the housing 4, in a vertical direction (Y-axis direction) in fig. 1; the imaging module 1 is then pulled back to the rearmost end of the fundus camera in the paper surface direction (Z axis direction) in fig. 1.
After the above operation, step 103 is entered, at which the fundus camera continuously gives a voice prompt to the outside to inform the user that the lock pin 9 such as a screw can be screwed.
Then, in step 104, after a predetermined time after the user is expected to have performed the screwing operation, the fundus camera starts to automatically check whether the locking pin 9 such as a screw is screwed on, that is, the user has completed the locking operation. If the result of the inspection is that the locking pin 9, such as a screw, has been screwed in place, the fundus camera is directly turned off and powered off, and then the user can simply handle the locked portable camera for logistics and transportation, or even put it directly into a pocket or a handbag to carry it with him.
If the result of the check in step 104 is no, for example, if it is checked that the lock pin 9 is not screwed, this may be because the fundus camera is not automatically moved to a predetermined position, at which time the following step 105 may be entered.
In step 105, the fundus camera first checks whether the imaging module has been accurately moved to a predetermined position, if yes, reminds and waits for the next locking operation of the user, and if no, proceeds to step 106.
In step 106, the user is allowed to enter a fine adjustment mode of locking the fundus camera, for example, by means of an operation key: specifically, the user can press the key for a long time, for example, for 5 seconds, at this time, the portable fundus camera prompts to enter a precise mode, and by clicking the key by the user, the three-degree-of-freedom motion module 2 automatically moves laterally or longitudinally at this time until the first locking hole 8, the through hole 7 and the second locking hole 6 are completely aligned in the lateral or longitudinal direction, and the current fine adjustment position is recorded as a training result, and the memory position is directly pressed for precise packaging at the next packaging. The unlocking operation of the fundus camera can then jump to step 104. Therefore, the self-service locking of the fundus camera can be realized without excessive intervention of a user, so that the operation difficulty of the user is reduced to a great extent, the fundus camera can be conveniently used even in a basic medical institution, excessive training cost is not required, and the self-service locking device has good human-machine friendliness.
Preferably, as shown in fig. 4, in order to ensure that the portable fundus camera is surely in the locked state after the fundus camera is reliably located at the predetermined position by means of the above steps, to minimize the risk of damage during the transportation process, it is also preferable to automatically further detect whether the user actually screws the locking pin 9 into the first locking hole 8 before the portable fundus camera is turned off in step 104 to determine whether the locking/unlocking mechanism is already in the locked state at this time; as shown in fig. 2, the imaging module 1 can be moved up along the guide rail 3 a distance and then moved down a distance. If the imaging module 1 cannot move up and down due to being locked so as to trigger the sensor, the fundus camera automatically performs shutdown operation so as to facilitate later logistics transportation. If the locking pin 9 is not locked for various reasons, the imaging module 1 may now be moved somewhat vertically. When it is detected that the imaging module 1 triggers the sensor, it is considered that the locking pin 9 is not normally screwed down, and at this time, the above-mentioned step 105 is shifted to and the user is prompted by voice to confirm and correctly screw down the locking pin 9 until it is automatically detected that the locking pin 9 is normally mounted (at this time, the imaging module 1 cannot be moved to contact the sensor).
Of course, alternatively, a sensor, which may be, for example, a potential switch, provided in the first locking hole 8 for identifying whether the locking pin 9 has been inserted into or removed from the first locking hole 8 may be included, wherein the potential switch is triggered to output a first electrical signal to the outside if the locking pin 9 is inserted into the first locking hole 8, and is triggered to output a second electrical signal to the outside if the locking pin 9 is removed from the first locking hole 8.
As is apparent from the above, according to the above-described packing (locking) method of the fundus camera, since a predetermined position is found from the main by means of artificial intelligence, it is possible to ensure that a packing operation repeated a plurality of times can be realized in a low-cost manner with little user intervention. Further, since the fundus camera is locked with the single locking pin 9 and the reliable locking of the fundus camera is sensed without adding an additional switch for sensing the locking of the fundus camera, the hardware cost of the fundus camera can be reduced.
Additionally, as a preferred aspect, the unpacking (unlocking) operation of the fundus camera is described below in conjunction with fig. 5.
When the portable fundus camera is transported and needs to be put into use again, step 201 is performed, in which the user first turns on the camera that has been powered off again, specifically, it may be triggered by the user pressing a key for a long time or by the remote terminal sending an unlock command. Further in step 202, after the portable fundus camera is turned on, a predetermined time is set aside for the user to remove, for example, the locking pin 9, which is preferably a screw here. Subsequently, in step 203, the fundus camera automatically detects whether the user has performed an unlocking operation of the locking/unlocking mechanism, i.e., whether the locking pin 9, such as a screw, has been removed, which may be preferable by controlling the imaging module 1 to move upward a distance and then downward a distance, and when detecting that the imaging module 1 triggers the sensor, it is considered that the locking pin 9 is normally removed, and at this time, the imaging module 1 is automatically moved to the operating state. Otherwise, if it is determined that the locking pin 9 is not removed, the following step 204 is performed, and the user is informed of the correct manual removal of the locking pin 9 by a voice prompt until the correct removal of the locking pin 9 is automatically detected, and then the step 203 is performed again. It is of course also conceivable that the normal removal of the locking pin 9 can also be achieved by means of a sensor, which can be a potential switch for example, provided in the first locking hole 8 for identifying whether the locking pin 9 has been inserted into or removed from the first locking hole 8. Thereby, by the above detection, the portable fundus camera is automatically unlocked or unpacked with the lock pin 9 normally removed.
It should be noted that the above-described locking or unlocking process may be automatically completed after receiving an instruction, which may be, for example, an operation interface of an upper computer as a portable fundus camera, or triggering a continuous key 3 times, and the portable fundus camera may be brought into a shutdown state after successful locking or unlocking so as to be convenient for later logistics transportation or be brought into a normal operation mode for normal use.
As a preferred aspect of the present invention, taking the example shown in fig. 6 as an example, the host computer may be a terminal 16 which is communicatively connected to the fundus camera 14 by means of a server 15.
Specifically, the terminal 16 may have a target applet installed therein, and the operation interface of the target applet includes: the remote operation control may be triggered by the user by operating the remote operation control (for example, clicking, long pressing, or sliding the remote operation control), to send a control instruction to the server 15, where the server 15 forwards the control instruction to the fundus camera 14 after receiving the control instruction from the terminal 16, and the fundus camera 14 executes a processing action corresponding to the control instruction after receiving the control instruction. In practical applications, the terminal 16 may be a mobile terminal such as a smart phone, a tablet computer, a personal digital assistant, etc. The applet may be a WeChat applet, a Payment applet, or other type of applet, and embodiments of the invention are not limited in this regard.
It can be seen that, in the embodiment of the present invention, when the applet issues the control instruction to the fundus camera through the https transmission protocol with high security, the corresponding control instruction is distributed to the corresponding fundus camera 14 through the server 15 first by passing through the server 15 with high security and stability, so that the corresponding fundus camera executes the corresponding processing action. The agreement, channel transmission and return mechanism of the interactive protocols in the whole instruction protocol issuing process all complete a whole set of flow protocols through encryption transmission, and the protocols are as follows: the control instruction can automatically distribute and return results when the fundus camera is issued, and a user does not need to be familiar with the equipment to know the operation requirement of the equipment in the whole equipment operation process, and can complete a series of actions only by guiding through a character interface which is simple and easy to understand in a small program.
As a preferred way, in order to ensure the safety of the operation, it is necessary to bind the fundus camera 14 with the target applet running on the terminal 16, and only in the case of binding, the user can remotely control the fundus camera through the applet.
As an exemplary manner, the binding process of the object applet with the fundus camera 14 may be: scanning a graphic code corresponding to the fundus camera to acquire an equipment serial number of the fundus camera; acquiring an authorization code of the fundus camera 14; the user identification of the target applet, the device serial number and authorization code of the fundus camera 14 are uploaded to a server to establish a binding relationship of the target applet and the fundus camera. The authorization code of the device is unique, and the graphic code can be a two-dimensional code.
As an exemplary manner, after the user first takes the fundus camera 14, the user needs to perform a binding operation of the fundus camera, and the authorization code is issued to the user along with the fundus camera, so that the user can complete the authorization binding of the device through the applet code attached to the body of the micro-letter scanning fundus camera. After the applet code is scanned, a device binding boundary surface can be displayed, the device serial number of the fundus camera is displayed on the interface, and after the authorization code and related user information are input, a user clicks a "binding device" control, so that the fundus camera and the applet can be bound. In addition, after the binding operation, an unbinding operation may also be performed.
Here, the remote operation control may be: and the control is used for controlling the starting-up of the fundus camera.
As an exemplary manner, after the fundus camera is powered on, when the fundus camera needs to enter a working state, as shown in fig. 4, a user can control the fundus camera to execute a starting action by clicking a "click start" control in an operation interface of the applet, the fundus camera does not need human intervention equipment in the starting process, and the processes of networking, self-checking and the like can be automatically completed in the starting process of the fundus camera until the starting operation of the applet is finished when the voice prompt of the fundus camera is started. In addition, after the fundus camera is started, a starting result can be displayed on the applet interface.
As can be seen from the foregoing embodiments, in this embodiment, the fundus camera is bound by the applet manner, and the user may trigger the control instruction on the remote operation control of the applet operation interface, and issue the control instruction to the fundus camera through the server, so that the fundus camera executes the processing action corresponding to the control instruction. Compared with the prior art, in the embodiment of the invention, the user can use the fundus camera without directly contacting the fundus camera, and the remote operation control is displayed with the function description information of the control, so that the user can unpack the fundus camera without specially learning the unpacking operation of the fundus camera, and the difficulty of using the portable fundus camera by the user is reduced. In addition, the applet can issue control instructions through a server deployed in the cloud, and the network reliability and security are highly reliable and guaranteed.
Here, the terminal 16 as the host computer may transmit or receive a command for locking, unlocking, whether the locking pin 9 is removed, whether the locking pin 9 is normally installed, and when the portable fundus camera receives the device packing or locking command, control the portable fundus camera to precisely enter a predetermined position for packing as described above, and prompt the tightening of the locking pin 9 to complete packing. When the portable fundus camera receives an unlocking or unpacking instruction, the portable fundus camera automatically completes unpacking according to the unpacking flow; when the portable fundus camera receives an instruction whether the lock pin 9 is removed, the detection of the removal state of the lock pin 9 and the reporting of the state are completed as described above; when the portable fundus camera receives an instruction whether the lock pin 9 is normally mounted, the mounted state of the lock pin 9 is detected and reported as described above. Thus, a portable fundus camera which is user-friendly and has low operation difficulty can be provided.
While the invention has been described in detail in connection with only a limited number of embodiments, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified by incorporating any number of variations, alterations, substitutions, or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the invention. Further, while various embodiments of the invention have been described, it is to be understood that aspects of the invention may include only some of the embodiments. Accordingly, the invention is not to be seen as limited by the foregoing description, but is only limited by the scope of the appended claims.
Claims (11)
1. A method of locking/unlocking a portable fundus camera, wherein the method comprises:
step 101, sending a locking signal to the fundus camera by means of external equipment or a touch key;
102, moving an imaging module to a preset position by the three-degree-of-freedom motion module of the fundus camera according to a locking signal;
step 103, the fundus camera prompts a user to perform locking operation on the locking/unlocking mechanism;
104, judging whether the user finishes the locking operation or not by the fundus camera, and if so, turning off the fundus camera; if the determination is no, go to step 105;
Step 105, the fundus camera checks whether the imaging module has accurately moved to a preset position, if yes, the fundus camera reminds and waits for the next locking operation of the user, and if no, step 106 is performed;
step 106, the fundus camera prompts the user to enter a fine adjustment mode to automatically move the imaging module to a preset position again, updates the position after fine adjustment to the latest preset position, and jumps to step 104;
wherein the portable fundus camera includes:
the shell is provided with an observation window;
the imaging module is accommodated in the shell and shoots fundus retina of eyes of a shot person positioned in the observation window through the observation window;
a three-degree-of-freedom motion module movably disposed on the housing, the three-degree-of-freedom motion module having the imaging module mounted thereon and configured to allow the imaging module to move in a lateral, longitudinal, and vertical direction relative to the housing;
the positioning unit is used for controlling the three-degree-of-freedom motion module to drive the imaging module to move based on the pupil position of the eyes of the shot person, so that the imaging module is aligned to the pupil; and
A locking/unlocking mechanism configured to lock or unlock the imaging module at a predetermined position relative to the housing, wherein the locking/unlocking mechanism includes: the portable fundus camera comprises a first locking hole arranged on the imaging module, a second locking hole arranged on the shell and a locking pin capable of being inserted into the first locking hole through the second locking hole, wherein the portable fundus camera is locked when the locking pin is inserted into the first locking hole of the imaging module and is unlocked when the portable fundus camera is withdrawn from the first locking hole of the imaging module.
2. The method of locking/unlocking a portable fundus camera of claim 1, wherein said three degree of freedom motion module is located between said imaging module and said housing, and said locking/unlocking mechanism further comprises a through hole provided on said three degree of freedom motion module.
3. The method of locking/unlocking a portable fundus camera of claim 2, wherein said three degree of freedom motion module comprises at least one boss extending in a lateral direction to allow said three degree of freedom motion module to move said imaging module laterally relative to a housing, wherein said boss forms a snap fit with said housing.
4. The method of locking/unlocking a portable fundus camera of claim 2, wherein said three degree of freedom motion module includes at least one annular boss extending therefrom to allow said three degree of freedom motion module to move said imaging module laterally or longitudinally relative to a housing, wherein said boss forms a snap fit with said housing.
5. The method of locking/unlocking a portable fundus camera of claim 3 or 4, further comprising a first sensor provided in said first locking hole for identifying whether said locking pin has been inserted into or removed from the first locking hole.
6. The method of locking/unlocking a portable fundus camera of claim 2, wherein said three degree of freedom movement module is provided with a pair of vertically disposed rails, wherein said imaging module is passed through said rails to allow vertical movement thereof relative to the housing, wherein a second sensor is provided above or below said imaging module to identify that said imaging module is vertically in a preset position.
7. The method of locking/unlocking a portable fundus camera of claim 3 or 4, wherein a third sensor for recognizing that said imaging module is at a predetermined position in a lateral or longitudinal direction is provided on the housing.
8. The method of locking/unlocking a portable fundus camera of claim 1, wherein the predetermined positions of said imaging module are an intermediate position of the imaging module with respect to said housing in a lateral direction, a position of the imaging module closest to the housing in a vertical direction, and a rearmost position of the imaging module in a longitudinal direction.
9. The method of locking/unlocking a portable fundus camera according to claim 1, wherein in step 104, before the fundus camera is turned off, the three-degree-of-freedom movement module attempts to move an imaging module to determine whether the locking/unlocking mechanism is already in a locked state, and if so, turns off the fundus camera, and if not, proceeds to step 105.
10. The method of locking/unlocking a portable fundus camera of claim 1, further comprising the step of unlocking the locked portable fundus camera of:
step 201, restarting the turned-off fundus camera, and sending an unlocking signal to the locked portable fundus camera by means of an external device or a touch key:
step 202, the fundus camera prompts a user to unlock the locking/unlocking mechanism;
Step 203, the fundus camera checks whether the locking/unlocking mechanism is in an unlocking state, if yes, the imaging module is moved to a working state, and if no, step 204 is performed;
step 204, the fundus camera prompts the user to incorrectly unlock the locking/unlocking mechanism and prompts the user to unlock the locking/unlocking mechanism again, and then jumps to step 203.
11. The method of locking/unlocking a portable fundus camera of claim 10, wherein in step 203 said three degree of freedom motion module attempts to move the imaging module to a preset position that triggers the second sensor to determine if said locking/unlocking mechanism is already in an unlocked state.
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| CN116616696A (en) * | 2022-02-14 | 2023-08-22 | 北京鹰瞳科技发展股份有限公司 | Three-coordinate supporting platform of fundus camera and fundus camera |
| CN114972462B (en) * | 2022-07-27 | 2023-08-15 | 北京鹰瞳科技发展股份有限公司 | Method for optimizing working distance alignment effect of eye bottom camera and related products thereof |
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