CN109497932A - Eyesight automatic testing equipment - Google Patents
Eyesight automatic testing equipment Download PDFInfo
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- CN109497932A CN109497932A CN201811617965.XA CN201811617965A CN109497932A CN 109497932 A CN109497932 A CN 109497932A CN 201811617965 A CN201811617965 A CN 201811617965A CN 109497932 A CN109497932 A CN 109497932A
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- singlechip
- key
- eyesight
- indicator light
- signal
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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
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
-
- 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
- A61B3/0016—Operational features thereof
- A61B3/0025—Operational features thereof characterised by electronic signal processing, e.g. eye models
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Ophthalmology & Optometry (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Signal Processing (AREA)
- Eye Examination Apparatus (AREA)
Abstract
Present invention discloses a kind of eyesight automatic testing equipments, it includes test emitter and test receiver, test emitter includes first singlechip, the first key, the second key, third key, the 4th key and infrared transmitting circuit, and test receiver includes infrared receiving circuit, comparator, counter, second singlechip, the first indicator light, the second indicator light, third indicator light, the 4th indicator light, alphanumeric display and shields as the result is shown.Eyesight automatic testing equipment of the present invention utilizes infrared radio signal transmission technology and single-chip microcomputer control technology, and eyesight testing person can complete eyesight testing with a people, and it is convenient to operate, and result is accurate, can also show result on a display screen.
Description
Technical field
The embodiment of the present invention is related to a kind of sight test means, in particular to a kind of eyesight automatic testing equipment.
Background technique
It tests eyesight and is generally divided into two class of distant vision and near vision, distant vision mostly uses international standard visual chart, this table is
Different " E " word of 12 rows opening direction of different sizes is formed, and from 0.1-1.5, (or from 4.0-5.2), every row has label for measurement.
Test method is that the sight of examinee is parallel with 1.0 a line, apart from 5 meters of visual chart, visual chart and is examined
The distance of person must be fixed correctly, and patient is 5 meters away from table.As it is inadequate 5 meters of indoor distances long when, then should be placed at 2.5 meters flat
Face mirror reflects visual chart.It is detected and is first covered at a glance, it is simple eye to recognize " E " word notch direction from top to bottom, until that cannot distinguish
Think to stop, record.Twenty-twenty vision should be 1.0 or more.If testee 0.1 also can't see, to move forward, directly
Until it can see 0.1, eyesight is then " 0.1 × distance/5=eyesight "；If still can't see 0.1 in half meter, can enable tested
Examination person recognizes index, surveys manual, light sensation etc..Finally eyesight is recorded by inspection situation.
Above-mentioned eyesight test method is traditional artificial sight's detection, need to be worked with special messenger's special project, but this work skill
The case where art content is lower, and there are waste of manpower costs, and also cause eyesight and detect inaccurate consequence.
Summary of the invention
It is an object of the invention in view of the above-mentioned drawbacks in the prior art, provide one kind to liberate labour, and
Detect the high eyesight automatic testing equipment of precision.
For achieving the above object, present invention employs following technical solutions: a kind of eyesight automatic testing equipment, including
Test emitter and test receiver；Wherein, test emitter include first singlechip, the first key, the second key, third by
Key, the 4th key and infrared transmitting circuit, aforementioned four key is parallel with one another, and respectively with the input terminal coupling of first singlechip
It closes, the first key exports 1 failing edge pulse signal for triggering first singlechip, and the second key is for triggering first singlechip
2 failing edge pulse signals are exported, third key exports 3 failing edge pulse signals for triggering first singlechip, and the 4th presses
Key exports 4 failing edge pulse signals, the output end coupling of infrared transmitting circuit and first singlechip for triggering first singlechip
It closes, the failing edge pulse signal for exporting first singlechip is wirelessly sent to test receiver；It includes red for testing receiver
Outer reception circuit, comparator, counter, second singlechip, the first indicator light, the second indicator light, third indicator light, the 4th instruction
Lamp, alphanumeric display and shield as the result is shown, infrared receiving circuit is coupled with comparator, for receiving infrared transmitting circuit sending
Failing edge pulse signal, and control failing edge pulse signal of the comparator output phase with quantity, the first output end of counter with
The P2.4 foot of second singlechip and the P2.5 foot and the second finger of the coupling of the first indicator light, second output terminal and second singlechip
Show lamp coupling, third output end couple with the P2.6 foot of second singlechip and third indicator light, the 4th output end and second singly
The P2.7 foot of piece machine and the coupling of the 4th indicator light, the counter are used to calculate of the failing edge pulse signal of comparator output
Number, when it is 1 that signal is rushed in decline along the pulse, the first output end exports high level signal, and rushing signal along the pulse when decline is 2
When, second output terminal exports high level signal, and when it is 3 that signal is rushed in decline along the pulse, third output end exports high level
Signal, when it is 4 that signal is rushed in decline along the pulse, the 4th output end exports high level signal, and second singlechip is used for control word
The high level signal and control result that symbol display screen random display eyesight symbol and count pick up device are sent show screen display
Show test result.
In addition, the present invention also provides following attached technical schemes:
First singlechip is 8052 type single-chip microcontrollers, and periphery is provided with crystal oscillating circuit, and the crystal oscillator frequency of crystal oscillating circuit is
12M。
Infrared transmitting circuit includes triode, infrared transmitting tube and current-limiting resistance, and the triode is positive-negative-positive, base stage
The output end of first singlechip is connect, emitter connects the cathode of infrared transmitting tube, grounded collector, and the anode of infrared transmitting tube connects limit
Leakage resistance one end, another termination 5V power supply of current-limiting resistance.
Infrared receiving circuit includes infrared receiving tube, current-limiting resistance R1 and current-limiting resistance R3, and current-limiting resistance R1 mono- terminates 5V
Power supply, the anode and current-limiting resistance R3 of another termination infrared receiving tube, infrared receiving tube and current-limiting resistance R3 are parallel with one another, and
The minus earth of infrared receiving tube, current-limiting resistance R3 also connect the in-phase end of comparator.
The backward end of comparator is connected with a potentiometer, and the backward end of comparator is by accessing 5V power supply after potentiometer.
Second singlechip is 8052 type single-chip microcontrollers, and periphery is provided with crystal oscillating circuit and reset circuit, the crystalline substance of crystal oscillating circuit
Vibration frequency is 12M.
Compared with the prior art, the advantage of eyesight automatic testing equipment of the invention is: it is by test emitter and survey
Receiver composition is tried, using infrared radio signal transmission technology and single-chip microcomputer control technology, eyesight testing person can be complete with a people
At eyesight testing, it is convenient to operate, and result is accurate, can also show result on a display screen.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of Related Art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description merely relates to of the invention some
Embodiment, not limitation of the present invention.
Fig. 1 is the circuit diagram of the test emitter of the eyesight automatic testing equipment of present pre-ferred embodiments.
Fig. 2 is the circuit diagram of the test receiver of the eyesight automatic testing equipment of present pre-ferred embodiments.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
It applies mode and further unrestricted detailed description is made to technical solution of the present invention.
See Fig. 1, test emitter includes first singlechip U1, the first key S1, the second key S2, third key S3,
Four key S4 and infrared transmitting circuit.First singlechip U1 is 8052 type single-chip microcontrollers, and periphery is provided with crystal oscillating circuit, crystal oscillator electricity
Road includes capacitor C12, capacitor C13 and crystal oscillator Y1, and the frequency of crystal oscillator Y1 is 12M.First key S1, the second key S2, third are pressed
Key S3 and the 4th key S4 are parallel with one another, and couple respectively with P1.1, P1.3, P1.5, P1.7 of first singlechip U1, when pressing
After key pressing, the above-mentioned relevant pins input low level of first singlechip U1 is triggered.Infrared transmitting circuit includes triode Q1, red
Outer transmitting tube D1 and current-limiting resistance R20, triode Q1 are positive-negative-positive, and base stage connects the output end (P2.0) of first singlechip U1, are sent out
Emitter-base bandgap grading connects the cathode of infrared transmitting tube D1, grounded collector, and the anode of infrared transmitting tube D1 connects the one end current-limiting resistance R20, current limliting
Another termination 5V power supply of resistance R20.The present embodiment, the model IR204 of infrared transmitting tube D1.
Aforementioned four key (S1, S2, S3, S4) is used to indicate the direction of eyesight symbol, in the present embodiment, the first key S1
For indicating that the eyesight symbol direction " E " is that the left, the second key S2 is to the right that third is pressed for indicating the eyesight symbol direction " E "
Key S3 for indicate the direction eyesight symbol " E " be it is upward, the 4th key S4 be used for indicate that the direction eyesight symbol " E " is downward.The
One single-chip microcontroller U1 is by detection key, when detecting that the first key S1 is pressed, is emitted by its P2.0 mouthfuls and jumps edge under 1
Signal；When detecting that the second key S2 is pressed, is emitted by its P2.0 mouthfuls and jumped under 2 along signal；When detecting third
When key S3 is pressed, is emitted by its P2.0 mouthfuls and jumped under 3 along signal；When detecting that the 4th key S4 is pressed,
Emitted by its P2.0 mouthfuls and is jumped under 4 along signal.Namely: when first singlechip U1 detects different by key pressing, will lead to
The lower jump of infrared transmitting tube D1 transmitting different number of infrared transmitting circuit is crossed along signal, for representing the eyesight of tester's judgement
The direction of symbol " E ".
See Fig. 2, test receiver includes infrared receiving circuit, comparator U2, counter U3, second singlechip U4, first
Indicator light L1, the second indicator light L2, third indicator light L3, the 4th indicator light L4, alphanumeric display U5 and shield U6 as the result is shown.
Infrared receiving circuit includes infrared receiving tube D2, current-limiting resistance R1 and current-limiting resistance R3, and current-limiting resistance R1 mono- is terminated
5V power supply, the anode and current-limiting resistance R3 of another termination infrared receiving tube D2, infrared receiving tube D2 and current-limiting resistance R3 are mutually simultaneously
Connection, and the minus earth of infrared receiving tube D2, current-limiting resistance R3 also connect the in-phase end of comparator U2.The present embodiment, comparator
The model LM358 of U2, backward end are connected with a potentiometer R2, and the backward end of comparator U2 is followed by by potentiometer R2
Enter 5V power supply.The end CLK of the output termination counter U3 of comparator U2.It is connected between the output end and in-phase end of comparator U2
One resistance Rf, resistance Rf are the positive feedback resistor of comparator U2, for reinforcing the anti-interference ability of comparator U2.
Comparator U2 is connected into Schmidt trigger mode, is sent by infrared receiving tube D2 reception infrared transmitting tube D1 red
External signal, when receiving effective infrared signal, infrared receiving tube D2 conducting causes the in-phase end of comparator U2 to become low electricity
It is flat, cause the in-phase end current potential of comparator U2 to be less than reverse phase terminal potential at this time, therefore, comparator U1 output end exports 1 decline
Along pulse.When infrared receiving tube D2 receives the failing edge signal number that infrared transmitting tube D1 sends different number, correspondingly, than
Compared with the failing edge signal number that the output of device U1 will generate respective numbers.
The present embodiment, the model CD4017, CLK of counter U3 terminate the output end of comparator U2, the first output
End (Q0) couples with the P2.4 foot of second singlechip U4 and the first indicator light L1, second output terminal (Q1) and second singlechip
P2.5 foot and the P2.6 foot and third indicator light L3 of the second indicator light L2 coupling, third output end (Q2) and second singlechip
Coupling, the 4th output end (Q3) are coupled with the P2.7 foot of second singlechip and the 4th indicator light L4.
Counter U3 is used to calculate the number of the failing edge pulse signal of comparator U2 output；Rushing signal along the pulse when decline is
At 1, the first output end (Q0) exports high level signal, and the P2.4 foot of second singlechip U4 is triggered at this time, the first instruction
Lamp L1 shines；When it is 2 that signal is rushed in decline along the pulse, second output terminal exports high level signal, at this time second singlechip U4
P2.5 foot triggered, the second indicator light L2 shine；When it is 3 that signal is rushed in decline along the pulse, the high electricity of third output end output
Ordinary mail number, the P2.6 foot of second singlechip U4 is triggered at this time, and third indicator light L3 shines；Rushing signal along the pulse when decline is 4
When, the 4th output end exports high level signal, and the P2.7 foot of second singlechip U4 is triggered at this time, the 4th indicator light L4 hair
Light.First indicator light L1 is for indicating that the eyesight symbol direction " E " is that the left, the second indicator light L2 is for indicating eyesight symbol " E "
Direction be to the right, third indicator light L3 for indicate the direction eyesight symbol " E " be it is upward, the 4th indicator light L4 be used for indicate eyesight
The direction symbol " E " is downward.
Second singlechip U2 also shields U6 with alphanumeric display U5, as the result is shown and couples.Second singlechip U2 control character is aobvious
The eyesight symbol " E " that display screen U5 random display is of different sizes, direction is different, if the direction of eyesight symbol " E " and P2.4,
P2.5, P2.6 or P2.7 triggering foot match, then it represents that and it is correct, it is on the contrary then indicate mistake, and screen display is shown by control result
Show test result.The present embodiment, alphanumeric display U5 and as the result is shown screen U6 be LCD type display screen.
The present embodiment, second singlechip U2 are 8052 type single-chip microcontrollers, and periphery is provided with crystal oscillating circuit and reset circuit, brilliant
Vibration circuit includes capacitor C14, capacitor C15 and crystal oscillator Y2, and the frequency of crystal oscillator Y2 is 12M, and reset circuit includes capacitor C16, resets
Key S5 and ground resistance R10, reset circuit are connect with the port RST of second singlechip U2, are changed a people every time and are tested eyesight
When, it can reset and restart by reset key S5.
In conclusion eyesight automatic testing equipment of the invention is based on Infrared Ray Remote Control Technology, by test emitter and test
Receiver composition, eyesight testing person can complete eyesight testing with a people, and it is convenient to operate, and result is accurate, can also be in LCD
The display screen display result of type.
It is pointed out that the technical concepts and features of above-mentioned preferred embodiment only to illustrate the invention, its object is to
Those skilled in the art can understand the contents of the present invention and implements accordingly, and protection of the invention can not be limited with this
Range.Any equivalent change or modification in accordance with the spirit of the invention should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of eyesight automatic testing equipment, it is characterised in that: including test emitter and test receiver, wherein
Test emitter includes first singlechip, the first key, the second key, third key, the 4th key and infrared emission electricity
Road, aforementioned four key is parallel with one another, and couples respectively with the input terminal of first singlechip, and the first key is for triggering first
Single-chip microcontroller exports 1 failing edge pulse signal, and the second key exports 2 failing edge pulse signals for triggering first singlechip,
Third key exports 3 failing edge pulse signals for triggering first singlechip, and the 4th key is defeated for triggering first singlechip
4 failing edge pulse signals out, infrared transmitting circuit are coupled with the output end of first singlechip, for exporting first singlechip
Failing edge pulse signal be wirelessly sent to test receiver；
Test receiver includes infrared receiving circuit, comparator, counter, second singlechip, the first indicator light, the second instruction
Lamp, third indicator light, the 4th indicator light, alphanumeric display and shield as the result is shown, infrared receiving circuit is coupled with comparator, is used for
The failing edge pulse signal that infrared transmitting circuit issues is received, and controls comparator output phase and believes with the failing edge pulse of quantity
Number, the first output end of counter couples with the P2.4 foot of second singlechip and the first indicator light, second output terminal and second
The P2.5 foot of single-chip microcontroller and the P2.6 foot and third indicator light of the coupling of the second indicator light, third output end and second singlechip
Coupling, the 4th output end are coupled with the P2.7 foot of second singlechip and the 4th indicator light, and the counter is for calculating comparator
The number of the failing edge pulse signal of output, when it is 1 that signal is rushed in decline along the pulse, the first output end exports high level letter
Number, when it is 2 that signal is rushed in decline along the pulse, second output terminal exports high level signal, and rushing signal along the pulse when decline is 3
When, third output end exports high level signal, and when it is 4 that signal is rushed in decline along the pulse, the 4th output end exports high level
Signal, second singlechip are used for the high level that control character display screen random display eyesight symbol and count pick up device are sent
Signal and control result display screen show test result.
2. eyesight automatic testing equipment according to claim 1, it is characterised in that: the first singlechip is 8052 type lists
Piece machine, periphery are provided with crystal oscillating circuit, and the crystal oscillator frequency of crystal oscillating circuit is 12M.
3. eyesight automatic testing equipment according to claim 1, it is characterised in that: the infrared transmitting circuit includes three poles
Pipe, infrared transmitting tube and current-limiting resistance, the triode are positive-negative-positive, and base stage connects the output end of first singlechip, and emitter connects
The cathode of infrared transmitting tube, grounded collector, the anode of infrared transmitting tube meet current-limiting resistance one end, another termination 5V of current-limiting resistance
Power supply.
4. eyesight automatic testing equipment according to claim 1, it is characterised in that: the infrared receiving circuit includes infrared
Reception pipe, current-limiting resistance R1 and current-limiting resistance R3, current-limiting resistance R1 mono- terminate 5V power supply, the anode of another termination infrared receiving tube
With current-limiting resistance R3, infrared receiving tube and current-limiting resistance R3 are parallel with one another, and the minus earth of infrared receiving tube, current-limiting resistance
R3 also connects the in-phase end of comparator.
5. eyesight automatic testing equipment according to claim 1, it is characterised in that: the backward end of the comparator is connected with
One potentiometer, the backward end of comparator is by accessing 5V power supply after potentiometer.
6. eyesight automatic testing equipment according to claim 1, it is characterised in that: the second singlechip is 8052 type lists
Piece machine, periphery are provided with crystal oscillating circuit and reset circuit, and the crystal oscillator frequency of crystal oscillating circuit is 12M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617965.XA CN109497932A (en) | 2018-12-28 | 2018-12-28 | Eyesight automatic testing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617965.XA CN109497932A (en) | 2018-12-28 | 2018-12-28 | Eyesight automatic testing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109497932A true CN109497932A (en) | 2019-03-22 |
Family
ID=65755649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811617965.XA Pending CN109497932A (en) | 2018-12-28 | 2018-12-28 | Eyesight automatic testing equipment |
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| Country | Link |
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| CN (1) | CN109497932A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0224464A (en) * | 1989-06-02 | 1990-01-26 | Kokusan Kinzoku Kogyo Co Ltd | Operation control device |
| CN1390521A (en) * | 2002-03-29 | 2003-01-15 | 东南大学 | Intellectual vision measurer |
| WO2008046332A1 (en) * | 2006-10-20 | 2008-04-24 | Yuling Wang | Low-frequency resonance biology electrical therapeutic apparatus |
| CN201234973Y (en) * | 2008-07-17 | 2009-05-13 | 封士玉 | Intelligent eyesight test chart |
| CN102752928A (en) * | 2012-06-28 | 2012-10-24 | 江南大学 | Master-slave remote control dimming lamp |
| CN104523219A (en) * | 2015-01-12 | 2015-04-22 | 医立方(天津)科技有限公司 | Novel vision detector |
| CN206020541U (en) * | 2016-09-09 | 2017-03-15 | 成都信息工程大学 | A kind of pulse signal parameter measurement instrument based on FPGA |
| CN207283893U (en) * | 2017-10-30 | 2018-04-27 | 南宁职业技术学院 | SCM Based controller for road lamp |
| CN209404743U (en) * | 2018-12-28 | 2019-09-20 | 南宁职业技术学院 | Eyesight automatic testing equipment |
-
2018
- 2018-12-28 CN CN201811617965.XA patent/CN109497932A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0224464A (en) * | 1989-06-02 | 1990-01-26 | Kokusan Kinzoku Kogyo Co Ltd | Operation control device |
| CN1390521A (en) * | 2002-03-29 | 2003-01-15 | 东南大学 | Intellectual vision measurer |
| WO2008046332A1 (en) * | 2006-10-20 | 2008-04-24 | Yuling Wang | Low-frequency resonance biology electrical therapeutic apparatus |
| CN201234973Y (en) * | 2008-07-17 | 2009-05-13 | 封士玉 | Intelligent eyesight test chart |
| CN102752928A (en) * | 2012-06-28 | 2012-10-24 | 江南大学 | Master-slave remote control dimming lamp |
| CN104523219A (en) * | 2015-01-12 | 2015-04-22 | 医立方(天津)科技有限公司 | Novel vision detector |
| CN206020541U (en) * | 2016-09-09 | 2017-03-15 | 成都信息工程大学 | A kind of pulse signal parameter measurement instrument based on FPGA |
| CN207283893U (en) * | 2017-10-30 | 2018-04-27 | 南宁职业技术学院 | SCM Based controller for road lamp |
| CN209404743U (en) * | 2018-12-28 | 2019-09-20 | 南宁职业技术学院 | Eyesight automatic testing equipment |
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