CN1210711A

CN1210711A - Preventor for shortsightedness

Info

Publication number: CN1210711A
Application number: CN 98119717
Authority: CN
Inventors: 董继成
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-19
Filing date: 1998-09-19
Publication date: 1999-03-17
Anticipated expiration: 2018-09-19
Also published as: CN1110293C

Abstract

The preventer as an eyesight protector has signal receiving circuit or element connected to signal processing circuit and alarming, prompting and output circuit, and it features that there is between the signal emitting part and the signal receiving part guide hood capable of shielding signal from other directions. It can prevent pupil and student during learning from excessive lowering head, bending and nearing to book so as to prevent shortsightedness and hunchbacked. In addition, it has also automatic timer prompt, automatic switch for lower light strength and other supplementary functions.

Description

Preventor for shortsightedness

Preventor for shortsightedness is a kind of vision protection device that adopts electronic technology, belongs to electronic technology field.

Hypometropia and the student that increases the weight of of myopia constantly increase, one of the main reasons be exactly because read a book, write, fault when doing one's assignment, the distance between eyes and the books is too near.In learning process, will bow, bend over, make eyes near books unawares excessively, be easy to cause myopia or myopia is increased the weight of and hunchback.Also do not have at present practicability and effectiveness and simply and easily preventor for shortsightedness can prevent the generation of above-mentioned situation, wearing glasses, do method such as eye exercises can not fundamentally overcome the above problems.

Purpose of the present invention just provides a kind of preventor for shortsightedness, and it can prevent, and the student from bowing excessively in learning process, bend over, eyes are too near from books, thereby pre-myopia prevention or pre-myopia prevention increase the weight of and be bow-backed.

The object of the present invention is achieved like this:

The present invention has signal receiving circuit or receiving element to be connected with alarm and output circuit with signal processing circuit, also can there be signal generating circuit to be connected with signal transmission circuit or radiated element, wherein all or part of can be placed on the desk at user place or on the workbench or near the user, light-sensitive element, ambient brightness testing circuit, timing circuit can also be arranged in addition, turn on light and close circuit for lamp, sound circuit, music circuit, flasher circuit automatically; It is characterized in that signal emission part and/or signal receive section have the guide housing that can block other direction signal, signal receiving circuit or receiving element and/or signal transmission circuit or radiated element are placed on the rear portion of guide housing respectively, guide housing, signal emission part, signal receive section can have can regulate the device of placing height and angle, and the head that has signal emission or signal receive section to be worn over user is gone up or on one's body or have guide housing to be connected with signal receive section and/or signal emission part and be placed near the user.Thereby the guide housing of radiating portion can shield or block the signal of other direction makes the signal of emission can only point to receiving unit or user, makes receiving unit can only receive signal from user or radiating portion thereby the guide housing of receiving unit can shield or block reflected signal, interfering signal, the spurious signal of other direction.Suitably adjust the placement location of radiating portion and receiving unit and guide housing and angle and height during use, just can accomplish to bow within bounds that signal receive section when bending over can be received from the signal of radiating portion or user and bow excessively when bending over when user and to produce warning and export owing to blocking of guide housing makes signal receive section can not receive signal from radiating portion or user when user; Perhaps can accomplish signal receive section to be can not receive work as bow excessively signal receive section when bending over of user and can receive that signal from radiating portion or user produces and report to the police and output from the signal of radiating portion or user when bow within bounds when bending over effect owing to guide housing of user.

Guide housing also can be guide cylinder, gathering sill, directed cavity.The material of guide housing can be with opaque nonmetal or metal material for infrared signal and ultrasonic signal, and for example plastic opaque, lucite can be used metal material for the signal of telecommunication.The shape of guide housing can be flat-shaped trapezoidal, oval, flat taper shape, flat-horn shaped, cylindrical shape, rectangular tubular, and horizontal direction can broad, vertical direction can be shorter, can be pre-large post-small (open front is big, rear portion less).The device of regulating height and angle can adopt various known structures, for example the bent structure of the Collapsible structure of domestic floor-lamp, desk lamp.The signal that transmits and receives can be infrared signal, ultrasonic signal, ultraviolet signal, radio wave signal or other signal, and radiated element and receiving element can be components and parts such as infrared light emitting diode, infrared receiver diode, integrated receiving circuit, photodiode, phototriode, ultrasonic emitting element, ultrasound wave receiving element, integrated circuit.For example can adopt everybody infrared-emitting diode, ultrasonic emitting element of being familiar with such as SE303, PH303,5GLB, UCM-40-T, receiving element and can adopt infrared ray, ultrasound wave receiving element and pyroelectricity human-body infrared sensing device commonly used such as PH302,3DU5, UCM-40-R, SD02, PH5324, LHI958, P288,8CA02-1, RE02D.Signal transmission circuit, signal receiving circuit, signal processing circuit, alarm and output circuit, light-sensitive element, ambient brightness testing circuit, timing circuit, turn on light and close circuit for lamp, warning circuit, sound circuit, music circuit, flasher circuit and all can adopt known, common, commonly used circuit automatically.For example, can use reverser, NAND gate, nor gate, operational amplifier, 555 time base circuits, audion and resistance, electric capacity to constitute agitator, can also add coding circuit or modulation circuits such as MC15026 as signal transmission circuit; Signal receive section can adopt receiving circuit that infrared receiving circuit commonly used such as CX20106, KA2184, μ PC1373, integrated infrared receiving circuit or common discrete component constitute or and the NE567 frequency selection circuit or the LC resonance circuit that constitute, also can add decoding circuit or demodulator circuit that MC15027, MC15028 etc. constitute; Signal processing and alarm and output circuit are varied especially; These all are common components and parts and the circuit of using always, are easy to find in general scientific and technological books and periodicals.

Occupation mode has multiple.Suitably regulate during use and be worn on the user head or signal emission part on one's body and the height and the angle that are placed on the signal receive section on the desk, when user bow within bounds, when bending over, on the user head or the signal of the signal emission part on one's body emission signal receive section that can just be placed on the desk receive, therefore do not report to the police; And when user bow excessively, when bending over because the effect of guide housing, the signal receive section on the desk just can not receive the signal of radiating portion, will produce through signal processing circuit and alarm circuit and report to the police and output.In like manner, also can be placed on signal emission part on the desk, the head that signal receive section is worn over user go up or on one's body.Can also all be placed on signal emission part and signal receive section to do on the desk or the transceiver part and be in the same place, suitably regulate the height and the angle of placing, bow signaling reflex that its head when bending over can just come the signal emission part emission to signal receive section when user is within reason, do not report to the police; When user is too bowed when bending over, because the signal receive section of blocking of guide housing just can not receive reflected signal, treated will the warning.Perhaps the receiving unit that pyroelectricity human-body infrared sensing device is constituted is placed near the user, suitably regulates the height and the angle of placing, and bows when bending over when user is within reason, and pick off can just be received the signal that the user head comes, and does not report to the police; When user is too bowed when bending over, because the pick off that blocks of guide housing can not receive signal, treated will the warning.As a same reason, change placement location and the height and the angle of signal emission part and signal receive section and guide housing, can also be designed within reason bowing and just can not receive signal when bending over, behind signal processing circuit and alarm circuit, do not report to the police; Bow excessively and can receive signal when bending over, behind signal processing circuit and alarm circuit, report to the police.

In addition, can also add some auxiliary device, light-sensitive element, ambient brightness testing circuit, timing circuit can be arranged, turn on light and close circuit for lamp, alarm, sound circuit, music circuit, flasher circuit automatically.For example, add timing control circuit, when oversize eyes and can having a rest or turn off the light automatically and force rest by timing automatic alarm during physical fatigue of continuous learning time; Can add light-sensitive element composing environment luminance detection circuit such as photoconductive resistance, photocell, light cell, alarm is turned on light or is turned on light automatically automatically when study place insufficient light; Can add sound circuit, music circuit, flasher circuit, with voice, music, flashing light alarm prompting; Can also be combined as a whole with desk lamp.The above light-sensitive element of saying, ambient brightness testing circuit, timing circuit, turn on light and close circuit for lamp, alarm, sound circuit, music circuit, flasher circuit and can adopt known, commonly used, common circuit automatically.Be easy to from general scientific and technological books and periodicals, find.

Owing to adopt such scheme, can prevent to learn, when working because the myopia of bowing excessively, bending over to cause and myopia increases the weight of and bow-backed, easy to use.

The present invention is further described below in conjunction with drawings and Examples.

Accompanying drawing 1 is composition of the present invention and circuit block diagram.

Fig. 2 to Fig. 8 is structure of the present invention and uses sketch map.

Fig. 9 to Figure 19 is the used circuit of the several embodiment of the present invention.

Figure 20 to Figure 22 is a guide housing structure chart among the several embodiment of the present invention.

Among Fig. 1 to Fig. 8, the 1-signal generating circuit, 2-radiating circuit or radiated element, the guide housing of 3-radiating portion, the guide housing of 4-receiving unit, 5-signal receiving circuit or receiving element, the 6-signal processing circuit, the 7-auxiliary circuit (can comprise light-sensitive element, ambient brightness testing circuit, timing circuit, automatically turn on light close circuit for lamp, sound circuit, music circuit, flasher circuit), 8-alarm and output circuit, 9-user, 10-chair, 11-desk or workbench, the signal of 12-signal propagation path.Among Fig. 9 to Figure 19, DT is an infrared light emitting diode, models such as available PH303, FMQ1～FMQ3 is a buzzer, Q1～Q8 is an audion, U1A～U8 is an integrated circuit, W1～W5 is a potentiometer, and L1～L4 is an inductance, and R1～R32 is a resistance, C1～C30 is an electric capacity, and buzzer among Figure 16, Figure 17 and Figure 19 and luminous tube also can be used sound circuit, music circuit, flasher circuit instead as the alarm circuit.

Among Fig. 2, signal emission part and signal receive section are placed on the both sides of user respectively, user is within reason bows that signal is blocked by the head of user when bending over, the refraction signal of other direction, reflected signal, spurious signal all are directed to cover and block, and signal receive section just can not receive the signal of signal emission part emission.Too bow when bending over, can receive signal.

Among Fig. 3, can regulate the signal emission part that is placed on the desk and guide housing during use and be worn over signal receive section on the user head and the height and the angle of guide housing, user is too bowed when bending over, because the effect of guide housing, signal receive section just can not receive the signal that the signal emission part emission comes.Within reason bowing when bending over can be received signal.

Among Fig. 4, signal receive section is placed on desk or the workbench, and signal emission part is worn on the head of user, and all the other are identical with Fig. 3.

Among Fig. 5 and Fig. 6, within reason bowing when bending over can not receive the signal of emission.Too bow when bending over, can receive signal.

Signal receive section pyroelectricity human-body infrared sensing device among Fig. 7, available receiving circuit shown in Figure 180.The signal receive section when bending over of bowing within reason can be received the human infrared signal of user head emission, too bows when bending over owing to blocking of guide housing can not receive signal.

Signal emission part and signal receive section are put together or are made of one among Fig. 8, within reason bowing when bending over, and signal receive section can be received the signal that reflects through the user head.Excessively bow when bending over, can not receive signal.

Fig. 9 to Figure 13 is several signal transmission circuits, radiated element among Figure 10 also can change infrared light emitting diode into, radiated element among Fig. 9 and Figure 11 and Figure 12 also can change ultrasonic emitting element UCM-40-T into, U3 can be with NE555 or LM555 among Figure 12, and Figure 13 is the radio wave transmission circuit.Transfer W1, W4 can change tranmitting frequency.Transfer W2, W3, R10 can change the intensity that transmits.

Figure 14, Figure 15 are two kinds of infrared signal receiving circuits, can be used with several radiating circuits of Fig. 9 to Figure 12, and its output signal V2 can receive signal processing and the alarm and the output circuit of back.QR can use 3DU5 among Figure 14, and U4 can be with CX20106 or KA2184 among Figure 15, and DR can use infrared receiving diode PH302.The resistance that changes R16, R17 can be regulated the sensitivity of receiving circuit.

Among Figure 16, Q5 and on every side element constitute a kind of superregenerative radio wave signal receiving circuit, can be used with the radiating circuit among Figure 13.Q6, L4, C13, R15 are a kind of signal processing circuits, and Q7, FMQ1, LED, J0 are a kind of alarm and output circuit.The amplification that changes Q6 can be adjusted the sensitivity of receiving circuit.When receiving the signal that Figure 13 launches, through Q5 and around after element demodulation, Q6 amplify, L4, C13 resonance make the Q7 conducting, FMQ1 are piped produce that alarm, LED are also bright, its contact action of relay J 0 adhesive can be controlled other device.Not conducting of Q7 is not reported to the police when can not receive the signal of emission.Sort signal processing and alarm and output circuit can be used with the mode of Fig. 2, Fig. 5, Fig. 6.

Among Figure 17, UCM-40-R is a kind of ultrasonic signal receiving element, Q9, U5 and on every side element be another kind of signal processing circuit, Q7, FMQ2, LED are another kind of alarm circuit, also can remove to control other device as output by relay between Q7 colelctor electrode and the power supply+E.U5 can be with LM567 or NE567.Accent R21 can change the sensitivity of receiving circuit, can the frequency modulation rate with W5.When receiving signal, through Q9 amplify, after U5 handles, the 8 foot output low levels of U5 make that Q7 ends, FMQ2 and LED do not report to the police.Thereby 8 feet of U5 output high level makes the Q7 conducting make FMQ2 and LED produce alarm when can not receive signal.Sort signal is handled and the alarm circuit can be used with the mode of Fig. 3, Fig. 4, Fig. 7, Fig. 8.

Among Figure 18, SE is a pyroelectricity human-body infrared sensing device, models such as available P288, SCA02.The signal that SE receives amplifies through U6 earlier, can deliver in signal processing and alarm and the output circuit through the voltage V2 that produces after C27, C28, D1, the detection of D2 multiplication of voltage and go.This circuit can be used with the mode of Fig. 7.

Among Figure 19, PHOTO and amplifier U7 constitute a kind of ambient brightness testing circuit, rest-set flip-flop U8, relay J 1, Q8, FMQ3 and on every side element constitute a kind of timing circuit and the pass circuit for lamp of turning on light automatically.PHOTO is a light sensitive diode, also can use light-sensitive elements such as photoconductive resistance, light cell, photocell.Power on to circuit is logical when beginning to learn, power supply+E will charge to C30 by coil and the R30 of J1, it is high level output that high level after the time that arrival is set on the C30 makes the Q end upset of trigger U8, make Q8 conducting, FMQ3 produce alarm, electric light and other device action can be controlled in relay J 1 adhesive, J1 contact simultaneously.After this high level of Q end charges to C29 through R31, and after second time that arrival is set, the high level on the C29 makes the Q end upset of U8 for low level output, Q8 end, relay J 1 discharges, and the contact triggered electric light of J1 and other equipment produce second action.Low excessively as if ambient brightness, the voltage on the light sensitive diode POTHO will rise, U7 will export high level, make U8 upset Q end output high level through D3, and the generation alarm reaches turns on light automatically like preceding described exercises.Can regulate two timings respectively with R30, R31.Sort circuit can be used with the variety of way of Fig. 2 to Fig. 8.

Claims

1, a kind of preventor for shortsightedness, there are signal receiving circuit or receiving element to be connected with alarm and output circuit with signal processing circuit, also can there be signal generating circuit to be connected with signal transmission circuit or radiated element, wherein all or part of can be placed on the desk at user place or on the workbench or near the user: it is characterized in that signal emission part and/or signal receive section have the guide housing that can block other direction signal, signal receiving circuit or receiving element and/or signal transmission circuit or radiated element are placed on the rear portion of guide housing, the head that has signal emission or signal receive section to be worn over user go up or on one's body, perhaps there is guide housing to be connected and is placed near the user with signal receive section and/or signal emission part.

2, a kind of preventor for shortsightedness as claimed in claim 1 is characterized in that guide housing, signal emission part, signal receive section can have the device that can regulate placement height and angle.

3, a kind of preventor for shortsightedness as claimed in claim 1 is characterized in that light-sensitive element can be arranged, ambient brightness testing circuit, timing circuit, turns on light and close circuit for lamp, sound circuit, music circuit, flasher circuit and be connected with alarm and output circuit with signal processing circuit automatically.