CN2155812Y - Multi-function computer sight test instrument - Google Patents
Multi-function computer sight test instrument Download PDFInfo
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- CN2155812Y CN2155812Y CN 93212632 CN93212632U CN2155812Y CN 2155812 Y CN2155812 Y CN 2155812Y CN 93212632 CN93212632 CN 93212632 CN 93212632 U CN93212632 U CN 93212632U CN 2155812 Y CN2155812 Y CN 2155812Y
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- infrared
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Abstract
The utility model relates to a multi-function computer sight test instrument. The utility model is characterized in that the utility model is composed of a computer (1), a display (2), a printer (3), an interface (4), a probe (5), a remote controller (6), etc; application software which has various functions is stored in the computer (1); the probe (5) is connected to the interface (4) and then is connected to the computer; an infrared signal which is sent out from the remote controller (6) is received by an infrared receiver in the interface (4); then the signal is sent to the computer (1) to be processed.
Description
This utility model is about ophthalmology vision checkout gear, more specifically say so and detect about a kind of multi-functional vision of computer realization of utilizing, except detecting with existing ㄩ shape, C shape, E shape sighting target, also include the △ that is adapted to the child-☆ shape sighting target and detect, and suitable and should in vision very low count, sighting target such as crawl detects.Apparent motion then is used for the detection of malingering blindness and baby's vision.
Aspect tool for detecting vision, various countries all adopt visual acuity chart or visual acuity chart lamp box at present.More time-consuming with these tool detection, especially medical worker's workload is big when collective's examination of visual acuity.And exist the person under inspection to carry on the back note, conjecture visual acuity chart situation, and often can not reflect true vision, this is particularly evident when recruitment, enrollment, conscription health check-up.And also there is shortcoming in visual acuity chart itself; Owing to be subjected to the restriction of visual acuity chart length and width, so its sighting target progression and every grade of all corresponding being restricted of number that sighting target is arranged, this not only affects the accuracy of detection, and also there is limitation in its detection range.For low vision, still how to carry out at present with ' index ' (finger number) or ' manually ' methods such as (palm swings), very lack of standardization, so error is very big.Detection to malingering blindness and baby's vision does not also have desirable method.Generally all lean on doctor's range estimation or figure signal to observe and assess its vision, therefore also easily produce personal error.
Aspect the vision recording method, the decimal record that uses at present, mark record, logarithm record and China Miu Shi logarithm 5 member records etc. are all deposited shortcoming separately.' 1 fen visual angle ' be based on a traditional hypothesis, it is not any physiology unit, with physiological actual the differing greatly of vision; The decimal writing-method is to represent vision with the inverse at visual angle with decimal, and there is comparatively difficulty of vision statistics in this method, can not carry out shortcomings such as quantitative analysis; Mark record is to do denominator with designed distance, checks that distance does branch subrepresentation vision, thus very inconvenient when carrying out the vision statistical disposition, also there is shortcomings such as making the difficult understanding of people; Logarithm record and Miu Shi logarithm 5 member records are to represent vision with the logarithm value at visual angle, and major defect is more to make the people be difficult for understanding and accepting through the vision that logarithm is handled, and has increased the difficulty of the different visions that convert.
The purpose of this utility model provides a kind of Computerized multifunction optometric instrument.It has not only expanded the vision detection range, such as the detection of low vision, malingering blindness and baby's vision, and has used a kind of millimeter recording method, its easy to understand, is convenient to statistics and conversion etc.This millimeter recording method has been published on the national ophthalmology magazine.
According to multi-purpose computer detector of the present utility model, it is characterized in that it is made up of computer (1), display (2), printer (3), interface (4), probe (5) and remote controller (6) etc.; Storage has the application software of finishing various functions in computer (1); Probe (5) is connected to interface (4) and is connected to computer, and remote controller (6) emission infrared signal is received by the infrared receiver in the interface (4), delivers to computer (1) again and handles.It is further characterized in that said probe (5) has infrared transmitting tube and receiving tube, and the infrared signal that infrared receiving tube received is delivered to filter amplifier earlier, delivers to amplification detector again.
Below in conjunction with accompanying drawing multi-purpose computer detector of the present utility model is elaborated.
Fig. 1 is this utility model multi-purpose computer detector structure principle chart.
Fig. 2 is the probe line figure in this utility model multi-purpose computer detector.
Fig. 3 is the interface circuit figure in this utility model multi-purpose computer detector.
Fig. 4 is the software flow pattern of this utility model multi-purpose computer detector.
At first referring to Fig. 1, multifunctional sight detecting instrument of the present utility model is on a computer hardware basis, and the application software of setting up some external equipments and finishing various functions is formed.It mainly comprises computer 1, display 2, printer 3, interface 4, probe 5 and remote controller 6 etc.Stored the software program of finishing various functions in computer 1, various functions are selected (as described below) by the keyboard of computer 1.Under the control of computer 1 is carried out, the haplopia mark is presented on the display 2 singly.The detected person puts on blinds,eye (or changing blinds,eye automatically), and with eyes of shield, the action bars (or button) on the manipulation remote controller 6 of person under inspection is selected the sensing of sighting target.Remote controller 6 can directly be connected with interface 4 by cable, also can send infrared light, allows infrared on the interface 4 connect the haustorium reception.Whether each selection of person under inspection can show on display 1 correctly and indicate by the audio unit sounding that last testing result can print by printer 3.When detecting apparent motion or crawl, occur from left to right or dextrosinistral traveling light spot and bar grid on the display 2.With the probe 5 the band the person under inspection by the eyes of shield on, when tested eyes are seen screen, two eyes of person under inspection swing back and forth about understanding simultaneously along with moving of luminous point and bar grid, owing on the probe 5 infrared transmitting tube and receiving tube are housed, infrared transmitting tube is aimed at the pupil part, when eyeball swings back and forth, inconsistent by the infrared light that the pupil and the white of the eye are reflected, therefore the infrared light that infrared receiving tube received also changes along with the swing of eyeball, therefore pops one's head in 5 can detect the person under inspection whether apparent motion on the display 2 and crawl test signal are had reflection.
Fig. 2 has shown the concrete layout of infrared light probe.It makees pick off with infrared light, with an infrarede emitting diode D
1Do light source, the power that reflects by the eyes black and white obtains different signals, by infrared receiving tube D
2Amplify (original paper of employing is general-purpose operation amplifier LN324 and resistance-capacitance network) by filtering then, again by two utmost point amplification demodulators (original paper of employing also is general amplifier LM324 and resistance detector diode), again through relatively amplifying and the drive circuit of an audion is passed to interface board for computers with signal.
Fig. 3 has shown the concrete layout of interface, and the function of this interface is that the signal of remote controller and apparent motion (eye movement) signal are passed to computer.Plate is interior with two 8 buses isolator (models: 74LS244) receive remote controller signal and apparent motion signal.In addition with two 5 NAND gate 7425 and 6 not gate 74LS04 and nor gate 7420 and or door 74LS32 form a computer address and decipher gating circuit, its function is when the machine-readable address of calculating is 16 systems several 0280 and 0281, and remote signal and apparent motion signal are read in computer; When not reading above address, then block the signal of computer bus.Joint 1-6,8-13 amount to 11 and are used to receive remote signal, and 14,15 two of joints are used to receive the apparent motion signal.
Fig. 4 shows the flow chart for the software of realizing various functions.After the start, press ' A ' carriage return, program brings into operation, and a catalogue at first appears in the fluorescent screen, introduces the effect of various function keys, and this moment, the examiner can select test item, occurred a square then, required the examiner to import this square width, the mm of unit.The re-adjustment display makes the height of square equal width.This mainly is the error that causes for the difference that reduces each display display size and change in voltage, and the examiner also can ignore by (Return) key, and including latent value is 120mm.This program has seven test items, and its corresponding function key is respectively:
" U ": be ㄩ shape sighting target, " E ": be E shape sighting target, " C ": be C shape sighting target, " 0 ": be △ shape sighting target (child's sighting target), " N ": be the project of counting, " K ": be crawl project, " L ": be the apparent motion project.
In addition, also have some options buttons to be:
"＜ESC〉" key: program withdraws from." B " key: white background/black matrix is switched." W ": change contrast, 100%, 50%, 25%, 12% fourth gear is arranged." T " key: the detection data that statistics is stored." R " key: right and left eyes switches " 1,2,3,4,5,6 " key: change and detect distance, regulation ㄩ, E, C, the effect of △ shape project alternatives.Expression 1m, 2m, 3m, 4m, 5m, 6m.Counting, in the crawl, apparent motion project, having only two distances of 0.3m, 0.5m selective, corresponding key is: " 3,5 "." S " key: detect beginning.
After choosing test item, show immobilized sighting target figure earlier, be in the preliminary examination state.Have only by behind " S " initiating key, detection just begins the sighting target change at random.In the apparent motion testing process, the bar grid will move always, mustn't interrupt midway and withdraw from (can suspend by " D " key), until end, will write down the eye movement number of times automatically therebetween, and print the result automatically, and the function of using in projects testing process has:
" ↑, ↓, ←, → " directionkeys: be used for the judgement of ㄩ shape, E shape, C shape sighting target,, then handle by a last directionkeys as button not in 8 seconds.And record is correct, the error accumulation number of times.
"＜INS〉" key: △ shape, count, in the crawl project expression correct; "＜DEL〉" key: expression mistake.Make answer after generally allowing the person under inspection watch sighting target, by the examiner on behalf of operating cumulative frequency.
"-" key: key is dwindled in F.F., and sighting target dwindles; "+" key: amplify fast forward button, sighting target amplifies.
" Q " key: cls, withdraw from this detection." D " key: suspend, the sighting target blanking is up to continuing by " S " key.
When correct, errors number reached certain standard, detection stopped, display result, and sighting target rests on that one-level of result.Following column selection after finishing, is arranged in detection:
" X " key: recheck going out Cuona County's one-level sighting target, only allow once.
" R " key: conversion images of left and right eyes.As at 30 seconds not button will change automatically, when left eye (represent people's EOT this moment, because agreement is surveyed right eye earlier) when right eye is changed, show and measure result screen that can print the result this moment by " P " key, or store data by " F " key." R " key switches back right eye and continues to detect.
When having stored a collection of detection data need add up the time, can add up by " T " key.After not showing statistical result, also can be by " P " key print result.The statistics back is removed automatically and is stored data.To preserve as not adding up then stored data always, still preserve after program withdraws from.
Give a test of one's eyesight for far distance automatic, the person under inspection can be by remote controller from line operate.Each function key effect on the remote controller is respectively:
1, " beginning " key 2, " dwindling " key 3, " amplification " key 4, " F.F. " key 5, " upper and lower, left and right " directionkeys 6, " correctly " key 7, " mistake " key 8, " time-out " key 9, " reinspection " key.
Each key of above-mentioned remote controller, the person under inspection can be according to the practical situation selection.
The utility model has the advantages that measure accurate, widely applicable, for eyesight detect opened up one newly by way of.
Claims (2)
1, a kind of Computerized multifunction optometric instrument is characterized in that it is made up of computer (1), display (2), printer (3), interface (4), probe (5) and remote controller (6) etc.; Storage has the application software of finishing various functions in computer (1); Probe (5) is connected to interface (4) and is connected to computer (1), and remote controller (6) emission infrared signal is received by the infrared receiver in the interface (4), delivers to computer (1) again and handles.
2, according to the described Computerized multifunction optometric instrument of claim 1, it is characterized in that said probe 5, have infrared transmitting tube and receiving tube, the infrared signal that infrared receiving tube received is delivered to filter amplifier earlier, delivers to amplification detector again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93212632 CN2155812Y (en) | 1993-05-17 | 1993-05-17 | Multi-function computer sight test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93212632 CN2155812Y (en) | 1993-05-17 | 1993-05-17 | Multi-function computer sight test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2155812Y true CN2155812Y (en) | 1994-02-16 |
Family
ID=33793924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93212632 Expired - Fee Related CN2155812Y (en) | 1993-05-17 | 1993-05-17 | Multi-function computer sight test instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2155812Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101317753B (en) * | 2007-06-05 | 2011-05-04 | 长春奥普光电技术股份有限公司 | Multifunctional sight detecting instrument |
| CN104042186A (en) * | 2014-06-25 | 2014-09-17 | 深圳市斯尔顿科技有限公司 | Self-service type eye comprehensive detection device |
-
1993
- 1993-05-17 CN CN 93212632 patent/CN2155812Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101317753B (en) * | 2007-06-05 | 2011-05-04 | 长春奥普光电技术股份有限公司 | Multifunctional sight detecting instrument |
| CN104042186A (en) * | 2014-06-25 | 2014-09-17 | 深圳市斯尔顿科技有限公司 | Self-service type eye comprehensive detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |