CN201213025Y

CN201213025Y - Multifunctional eyesight protecting apparatus

Info

Publication number: CN201213025Y
Application number: CN 200820017032
Authority: CN
Inventors: 李建磊; 谭业武; 马震; 李宏光
Original assignee: Binzhou University
Current assignee: Binzhou University
Priority date: 2008-01-23
Filing date: 2008-01-23
Publication date: 2009-03-25
Anticipated expiration: 2018-01-23

Abstract

The utility model provides a multifunctional sight-protecting device which mainly comprises a power supply, an infrared human-body testing subassembly, a singlechip, a digital temperature-humidity sensor SHT11, a PWL converting chip MAX 232, and a chip RS-232 interface; a pin 1 of the infrared human-body testing subassembly is grounded, a pin 3 of the infrared human-body testing subassembly and a pin VCC and a pin /EA of the singlechip are connected with the anode of the power supply through a poser switch, a pin 2 of the infrared human-body testing subassembly is connected with a pin P1.0 of the singlechip through a switch S2, a pin P2.0 and a pin P2.1 of the singlechip are respectively connected with a data line DATA of the digital temperature-humidity sensor SHT11 and a serial clock line SCK, and a pin P3.0 and a pin P3.1 are respectively connected with a pin R2out and a pin T2in of the PWL converting chip MAX 232. When the user uses a computer in a short distance or for overlong time, information occurs on the screen of the computer for prompting the user to protect the sight and scientifically use eyes.

Description

Multi-functional vision protection device

Technical field

The utility model relates to the sight protectio field, particularly a kind of multi-functional vision protection device.

Background technology

At present, bathomorphic ratio significantly raises among the student, main cause is bad being accustomed to eye, this problem has caused the great attention of the head of a family and society, the patented technology that as the patent No. is 200620117290.9 " TV vision protector " is utilized the activity of infrared induction head human body exactly, and the pilot lamp prompting and the function of closing television machine are automatically arranged, and the prompting people should see TV outside predetermined distance, but be limited the serviceable life of relay, is unfavorable for the permanent use of TV; And for example the patent No. is the technology of 200520104007.4 " infrared sensing omnibearing protection optometric device "; sight line according to the people is carried out comprehensive adjusting to sensing head; timer can be pointed out between at the moment the end user; but this technology will hang over main frame on one's body, secondary machine hangs on the ear, uses inconvenience.

Summary of the invention

The purpose of this utility model provides a kind of multi-functional vision protection device; can detect temperature, the humidity of computer surrounding environment and the result is shown on computer screen in real time; its principle of work: the utility model is realized communicating by letter between single-chip microcomputer and the computer by the RS-232 serial ports; Temperature Humidity Sensor regularly passes to computer with detected environment temperature, humidity value by single-chip microcomputer; and on computer screen, show, simultaneously single-chip microcomputer also can detect the infrared human body detection components information that the someone enters the caution zone and in time pass to computer.The method of specific implementation is: the utility model, mainly form by power supply (1), infrared human body detection components (2), single-chip microcomputer (3), digital temperature-humidity sensor SHT11 (4), level transferring chip MAX232 (5), 9 core RS-232 interface (6), pin 1 ground connection of infrared human body detection components (2), pin 3 connects power supply (1) positive pole with the pin VCC and the pin/EA of single-chip microcomputer (3) by power switch S1, and pin 2 meets the pin P1.0 of described single-chip microcomputer (3) through switch S 2; Single-chip microcomputer (3) pin P2.0 and pin P2.1 meet data line DATA and the serial time clock line SCK of digital temperature-humidity sensor SHT11 (4) respectively, and pin P3.0 and pin P3.1 meet pin R2out and the pin T2in of level transferring chip MAX232 (5) respectively.

Its beneficial effect is: when people were too near apart from computer, prompting people distance can not be too near, and the attention science is with eye, and the kind program can also be set the machine time in the computer program, and reminds people can not be long between using at the moment.

Description of drawings

Fig. 1 is the utility model system chart.

Fig. 2 is the utility model internal circuit schematic diagram.

(1)---power supply; (2)---the infrared human body inductive component; (3)---single-chip microcomputer; (4)---digital temperature-humidity sensor SHT11; (5)---level transferring chip MAX232; (6)---9 core RS-232 interface.

Power supply in the utility model (1) is power supply, and infrared human body inductive component (2) is with infrared special With chip BISS0001 be the basis, for detection of whether the someone is in its distance of reaction, single-chip microcomputer (3) Being the MCS-51 single-chip microcomputer, also can be the single-chip microcomputer of other type, digital temperature-humidity sensor SHT11 (4) be responsible for the temperature, humidity value of testing environment and data are passed to single-chip microcomputer (3), electrical level transferring chip MAX232 (5) forms level shifting circuit with 9 core RS-232 interfaces (6), so that single-chip microcomputer (3) And communicate between the computer, its course of work is as follows: after powering on, and digital temperature-humidity sensor SHT11 (4) environment temperature, humidity are detected in real time, single-chip microcomputer (3) is gathered once digital per 10 seconds Temperature, the humidity data of Temperature Humidity Sensor SHT11 (4) are then through single-chip microcomputer (3) and level conversion Circuit is presented at environment temperature, humidity value on the computer screen; Infrared human body detection components (2) detects the people No being in its distance of reaction, output low level when the people is beyond distance of reaction is when the people is responding to distance From in time output high level trigger single-chip microcomputer (3) will point out people's science with information as " not from Computer is too near ", pass to computer through level shifting circuit, and show relevant information at computer screen.

Embodiment

The utility model can be placed on the below of display, is connected with host computer by cable, adjusts the distance of reaction of infrared human body detection components then, and energising gets final product work.The connection of its internal circuit is as follows:

As shown in Figure 2, pin 1 ground connection of infrared human body detection components (2), pin 3 connects power supply (1) positive pole with the pin VCC and the pin/EA of single-chip microcomputer (3) by power switch S1, pin 2 meets the pin P1.0 of single-chip microcomputer (3) through switch S 2, single-chip microcomputer (3) pin P2.0 and pin P2.1 meet data line DATA and the serial time clock line SCK of digital temperature-humidity sensor SHT11 (4) respectively, pin P3.0 and pin P3.1 meet pin R2out and the pin T2in of level transferring chip MAX232 (5) respectively, pin X1 and pin X2 connect oscillatory circuit, pin/RESET connects reset circuit, pin GND ground connection, oscillatory circuit is to be the capacitor C 1 of crystal Y1 and the 30pF of 12MHZ by crystal oscillator frequency, the typical circuit that C2 forms, reset circuit is by reset switch S3,8.2K resistance R 1 and 10uF capacitor C 3 form, the pin GND ground connection of digital temperature-humidity sensor SHT11 (4), pin VDD connects power supply (1) positive pole by power switch S1, the termination data line DATA of pull-up resistor R2, the other end was connected power switch S1 and was connect power supply (1), meet decoupling capacitor C8 between pin GND and the pin VDD, the pin R2in of level transferring chip MAX232 (5) is connected with digital 2 pin (serial data receives pin RXD) with numeral 3 pin (serial data sends pin TXD) of 9 core RS-232 interface (6) respectively with pin T2out, between pin VCC and the pin V+, between pin V-and the pin GND, be connected capacitor C 4～C7 of 104 respectively between pin C2+ and the C2-and between pin C1+ and the pin C1-, pin GND ground connection, pin VCC connects power supply (1) positive pole by power switch S1, the numeral 5 pin ground connection of 9 core RS-232 interface (6), all the other NM pins are unsettled.

Claims

1, a kind of multi-functional vision protection device; mainly form, it is characterized in that by power supply (1), infrared human body detection components (2), single-chip microcomputer (3), digital temperature-humidity sensor SHT11 (4), level transferring chip MAX232 (5), 9 core RS-232 interface (6):

Pin 1 ground connection of infrared human body detection components (2), pin 3 connects power supply (1) positive pole with the pin VCC and the pin/EA of single-chip microcomputer (3) by power switch S1, and pin 2 meets the pin P1.0 of described single-chip microcomputer (3) through switch S 2;

Described single-chip microcomputer (3) pin P2.0 and pin P2.1 meet data line DATA and the serial time clock line SCK of digital temperature-humidity sensor SHT11 (4) respectively, and pin P3.0 and pin P3.1 meet pin R2out and the pin T2in of level transferring chip MAX232 (5) respectively.