CN203424922U

CN203424922U - Portable eyesight testing system

Info

Publication number: CN203424922U
Application number: CN201320425614.5U
Authority: CN
Inventors: 董宇晨; 李庆利; 褚君浩
Original assignee: East China Normal University
Current assignee: East China Normal University
Priority date: 2013-07-17
Filing date: 2013-07-17
Publication date: 2014-02-12
Anticipated expiration: 2023-07-17

Abstract

The utility model discloses a portable eyesight testing system. The portable eyesight testing system comprises a remote control device, a receiving device and a PC, wherein the remote control device is connected with the receiving device through SPI communication, and the receiving device is connected with the PC through a USB. The portable eyesight testing device has an automatic adjusting function and can be applied to PCs of any platforms. The portable eyesight testing device has a good eyesight testing function, can be used for recording self-testing information of a single person or a family conveniently and can also be used on large-scale occasions such as large-scale physical examination. Testing data can be stored locally or uploaded to a far-end server and the efficient testing can provide help on the aspect of data acquisition for medical research.

Description

Portable visual acuity test macro

Technical field

This utility model relates to telecommunications and computer realm, particularly a kind of portable visual acuity test macro.

Background technology

In today of electronics technology high speed development, people's life be unable to do without electronic equipment already, it affects meeting in the obtaining of information in life, interhuman interchange and work etc., from the widest universal TV and PC, to widely used projector equipment in the dull and stereotyped PC of nowadays more and more being had an optimistic view of by people and school and company, it is exactly can be luminous that these electronic equipments have a common feature.Bring our comfortable and while easily enjoying scientific and technological progress, some potential harm can not be out in the cold.Luminous electronic equipment is accompanied by our life every day, and it is the most direct to the damage of user eyes, and user tends to because use for a long time, and forgets the distance of keeping fit with these irradiative electronic equipments, and then it is healthy to affect eye.Yet traditional eyesight testing, based on artificial, still can guarantee certain accuracy for individual vision health check-up, but due to the limitation of the eyesight testing instruments such as visual acuity chart and test environment, very inconvenient for individual tester; If for fairly large health check-up, eyesight testing project is often by manual testing, and medical worker's subjective factors will affect test result, and can take a large amount of time, from manpower and times two aspect, has wasting phenomenon.

Utility model content

The purpose of this utility model is a kind of portable visual acuity test macro providing for the deficiencies in the prior art, this system can be avoided interference from human factor, eyesight testing efficiency when guaranteeing the correctness of test result and improving extensive health check-up, can also be provided for the eyesight testing of family, record the test result of everyone different time of average family, the convenient eye of prompting in time health condition.

The concrete technical scheme that realizes this utility model object is:

A test macro, feature is that this system comprises remote control unit, receiving system and PC, and remote control unit links with SPI communication mode with receiving system, and receiving system is connected with PC by USB; Wherein:

Described remote control unit is comprised of multidirectional combination button circuit, one-chip computer module, power transfer module, wireless sending module and antenna, power transfer module is connected with multidirectional combination button circuit, one-chip computer module and wireless sending module respectively, multidirectional combination button circuit connects one-chip computer module, one-chip computer module is connected by communication bus with wireless sending module, and wireless sending module connects antenna;

Described receiving system turns USB module by one-chip computer module, wireless receiving module, power transfer module, serial ports and antenna forms, power transfer module connects respectively one-chip computer module and wireless receiving module, one-chip computer module turns USB module with serial ports and is connected by communication bus, connect one-chip computer module and be connected by communication bus with wireless receiving module, wireless receiving module connects antenna.

Efficiency when use of the present utility model can improve extensive eyesight testing greatly, and can reduce interference, increase the credibility of test result; The application limitations of having avoided heavy embedded system to cause.Simple to operate, plug and play, without existing any facility is changed, not only can promote the use of in health check-up mechanism, also can be applied in family, is convenient for people to love and pays close attention to eye healthy.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation;

Fig. 2 is this utility model remote control unit schematic diagram;

Fig. 3 is this utility model remote inside circuit block diagram;

Fig. 4 is this utility model receiving system internal circuit block diagram;

Fig. 5 is this utility model key circuit schematic diagram;

Fig. 6 is this utility model one-chip computer module circuit theory diagrams;

Fig. 7 is this utility model power transfer module circuit theory diagrams;

Fig. 8 is this utility model wireless receiving, sending module circuit theory diagrams;

Fig. 9 is that this utility model serial ports turns USB modular circuit schematic diagram.

The specific embodiment

Below in conjunction with Figure of description, this utility model is elaborated:

Consult Fig. 1, this utility model comprises remote control unit 1, receiving system 2 and PC 3, and remote control unit 1 links with SPI communication mode with receiving system 2, and receiving system 2 is connected with PC 3 by USB; By display 4 display standard sighting targets, the remote judgement sighting target of remote control unit 1 direction, PC USB interface place connects receiving system 2, it is inserting the rear operation of PC 3, start the eyesight testing software in PC 3, testing software will regulate parameters of display automatically, to meet testing standard.

Consult Fig. 2, have a multidirectional combination button 5 in this utility model remote control unit 1, upper and lower, left and right and center acknowledgement key are basal keystroke; Due in follow-up exploitation, sighting target form (as C shape etc.) by the variation becoming, this multidirectional combination button 5 possesses the direction key of upper left, lower-left, upper right and bottom right simultaneously.Battery is arranged in remote control unit 1 body, uses common No. 5 batteries can operate operation.

Consult Fig. 3, Fig. 6 and Fig. 8, this utility model remote control unit 1 is comprised of multidirectional combination button 5 circuit, one-chip computer module 7, power transfer module 11, wireless sending module 9 and antenna 10, power transfer module 11 is connected with multidirectional combination button 5 circuit, one-chip computer module 7 and wireless sending module 9 respectively, multidirectional combination button 5 circuit connect one-chip computer module 7, one-chip computer module 7 is connected by communication bus 8 with wireless sending module 9, and wireless sending module 9 connects antenna 10; In its one-chip computer module 7 circuit, be provided with STC12LE5408 chip, at transmitting terminal, utilize STC12LE5408 chip, key information is obtained, by SPI communication mode, by bus 8, transfer data to wireless sending module 9, antenna 10; In wireless sending module 9 circuit, be provided with the monolithic transceiving chip of ISM band for a 2.4-2.5GHz of being operated in Global Access of NRF24L01, make this utility model wireless transmission aspect there is the feature of two-forty, low-power consumption.

Consult Fig. 4, Fig. 6, Fig. 8 and Fig. 9, this utility model receiving system 2 turns USB module 17 by one-chip computer module 15, wireless receiving module 13, power transfer module 18, serial ports and antenna 12 forms, power transfer module 18 connects respectively one-chip computer module 15 and wireless receiving module 13, one-chip computer module 15 turns USB module 17 with serial ports and is connected by communication bus 16, one-chip computer module 15 is connected by communication bus 14 with wireless receiving module 13, and wireless receiving module 13 connects antenna 12; In its one-chip computer module 15 circuit, be provided with STC12LE5408 chip, in wireless receiving module 13 circuit, be provided with the monolithic transceiving chip of ISM band for a 2.4-2.5GHz of being operated in Global Access of NRF24L01, serial ports turns in USB module 17 circuit and is provided with PL2303 chip, at receiving terminal, by wireless receiving module 13, receive data, and by transition of communications, be serial communication by one-chip computer module 15, the PL2303 chip that turns USB module 17 by serial ports again becomes usb communication data by serial communication data transaction, realizes the communication connection with PC.

Consult Fig. 7, this figure is the circuit theory diagrams of the

power transfer module

11,18 of this utility model remote control unit 1 and receiving system 2, has used 1117 chips in circuit, and Voltage-output is guaranteed at 3.3V, and the steady operation of modules is provided; Coupling conversion for the level of communicating by letter.

Consult Fig. 5, this figure is the circuit theory diagrams of multidirectional combination button 5 in this utility model remote control unit 1, the matrix keyboard pattern that key connecting structure adopts, and this can save the interface quantity of single-chip microcomputer.

Consult Fig. 6, this figure is one-chip computer module 7,15 circuit theory diagrams of this utility model remote control unit 1 and receiving system 2, convenient other module that connects of its interface.

Consult Fig. 8, this figure is wireless sending module 9 and antenna 10 and wireless receiving module 13 and antenna 12 circuit theory diagrams of this utility model remote control unit 1 and receiving system 2, and the hardware circuit of wireless sending and receiving module is transceiver, keeps unity, not only convenient production, is more convenient for application.

Consult Fig. 9, this figure is that this utility model serial communication transfers USB pattern to, is conveniently connected with PC, and its inner diode applications is in order to prevent reversal connection.

This utility model, by the use of chip NRF24L01, completes convenient and reliable radio communication, realizes required standard measuring distance in eyesight testing.The application of STC12LE5408 single-chip microcomputer can reduce costs, and can reach button detection and by SPI communication modes, be connected the object of NRF24L01.The signal receiving is converted into serial communication mode by single-chip microcomputer by SPI communication mode, then is converted to usb communication mode by PL2303, makes it directly access PC, completes the data acquisition of whole test macro.Utilize sighting target display algorithm, get rid of interference factor, guarantee the accuracy of eyesight testing result.When working in networking pattern, because it possesses Statistic features fast,, in all testers' of same test point eyesight testing result, can directly not upload far-end server, be convenient to follow-up professional's analysis.When working in local mode, can realize repeatedly record and analysis to local data information, and can express intuitively in the mode of chart.

This utility model can be used on the PC of any platform, automatically adjusts resolution, color, brightness and the contrast of PC display, meets the test environment of sighting target in traditional eyesight testing.

Claims

1. a portable visual acuity test macro, it is characterized in that this system comprises remote control unit (1), receiving system (2) and PC (3), remote control unit (1) links with SPI communication mode with receiving system (2), and receiving system (2) is connected with PC (3) by USB; Wherein:

Described remote control unit (1) is comprised of multidirectional combination button (5) circuit, one-chip computer module (7), power transfer module (11), wireless sending module (9) and antenna (10), power transfer module (11) is connected with multidirectional combination button (5) circuit, one-chip computer module (7) and wireless sending module (9) respectively, multidirectional combination button (5) circuit connects one-chip computer module (7), one-chip computer module (7) is connected by communication bus (8) with wireless sending module (9), and wireless sending module (9) connects antenna (10);

Described receiving system (2) turns USB module (17) by one-chip computer module (15), wireless receiving module (13), power transfer module (18), serial ports and antenna (12) forms, power transfer module (18) connects respectively one-chip computer module (15) and wireless receiving module (13), one-chip computer module (15) turns USB module (17) with serial ports and is connected by communication bus (16), connect one-chip computer module (15) and be connected by communication bus (14) with wireless receiving module (13), wireless receiving module (13) connects antenna (12).