CN1515225A - Full-automatic visual acuity detector - Google Patents

Abstract

The present invention relates to a full-automatic vision testing apparatus instead of traditional vision testing method. The apparatus is composed of computer, display, printer, interface, probe and remote controller. In the computer the applied softwares capable of implementing various fanctions are stored, said probe is connected with interface, then connected to computer, the remote controller can transmit infrared signal, said signal can be received by infrared receiver in the interface, and is transferred into the computer to make processing step. It is accurate in testing result, and has extensive application range.

Description

Full-automatic eyesight detecting instrument

Technical field

The present invention relates to medical instrument, especially a kind of full-automatic eyesight detecting instrument.

Background technology

At present, various countries all adopt visual acuity chart or visual acuity chart lamp box.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.

Summary of the invention

Technical problem to be solved by this invention provides a kind of full-automatic eyesight detecting instrument, and it has not only expanded the vision detection range, and easy to understand, is convenient to statistics and converts.

The technical solution adopted for the present invention to solve the technical problems is: this device 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, remote controller 6 emission infrared signals, receive by the infrared receiver in the interface 4, deliver to computer 1 again and handle.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.

The invention has the beneficial effects as follows: measure accurate, widely applicable, for vision detect opened up one newly by way of.

Description of drawings

Fig. 1 is the full-automatic eyesight detecting instrument structure principle chart of the present invention.

Fig. 2 is the probe line figure in the full-automatic eyesight detecting instrument of the present invention.

Fig. 3 is the software flow pattern of the full-automatic eyesight detecting instrument of the present invention.

The specific embodiment

As shown in the figure, the present invention 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 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, and with eyes of shield, the action bars 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 inspection hand hay cutter apparent motion or crawl, occur from left to right or dextrosinistral traveling light spot and bar grid on the display 2.With the probe 6 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 6 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, so the infrared light that infrared receiving tube received also changes along with the swing of eyeball so pops one's head in and 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, do light source with an infrarede emitting diode D1, power by the reflection of eyes black and white obtains different signals, by infrared receiving tube D2, amplify by filtering then, again by two utmost point amplification demodulators, again through relatively amplifying and the drive circuit of an audion is passed to interface board for computers with signal.Fig. 3 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.Introduce the effect of various function keys, 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 U-shaped sighting target, ' E ': be E shape sighting target, ' C ': be C shape sighting target, ' 0 ': be △ shape 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%, 60%, 26%, 12% fourth gear is arranged.' T ' key: the detection data that statistics is stored.' R ' key: right and left eyes switching ' 1,2,3,4,5,6 ' key: change and detect distance, regulation U, E, the effect of C shape project alternatives.Expression 1m, 2m, 3m, 4m, 5m, 6m.Counting, in the crawl, apparent motion project, having only 0.3m, two distances of 0.5m are selective.Corresponding key is: ' 3.5 ', ' 8 ' 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.Detect and just begin 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, to write down the eye movement number of times automatically therebetween, and print the result automatically, the function of using in projects testing process has: ' ↑, ↓, ←, → ' directionkeys: be used for the judgement of U-shaped, E shape, C shape sighting target, as button not in 8 seconds, then handle by a last directionkeys.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 correctly, when errors number reaches certain standard. detect and stop, display result, sighting target rests on that one-level of result.After detecting end following column selection is arranged: ' X ' key: recheck going out Cuona County's one-level sighting target, only permission once.' R ' key: conversion images of left and right eyes.As at 30 seconds not button will change automatically, when left eye when right eye is changed, show and to 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.

Claims (2)

1, a kind of full-automatic eyesight detecting instrument, 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 (1), remote controller (6) emission infrared signal, receive by the infrared receiver in the interface (4), deliver to computer (1) again and handle.

2. full-automatic eyesight detecting instrument according to claim 1 is characterized in that: described probe (5), have 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.

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