CN1049421A - Electronic eyesight protecting unit - Google Patents
Electronic eyesight protecting unit Download PDFInfo
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- CN1049421A CN1049421A CN 90107599 CN90107599A CN1049421A CN 1049421 A CN1049421 A CN 1049421A CN 90107599 CN90107599 CN 90107599 CN 90107599 A CN90107599 A CN 90107599A CN 1049421 A CN1049421 A CN 1049421A
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- circuit
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Abstract
A kind of electronic eyesight protecting unit that belongs to the sight protectio utensil is made up of with eye distance monitoring sensor, sitting posture and books and the mandatory delimiter of eye distance, power switch, power supply, shell photoelectric automatic control circuit, delay circuit, warning circuit, timer, two moment timing signal output control circuit, body position sensor, books.Can not carry out automatic monitoring warning with behavior and the poor environment that read, do not have when seeing TV floor light under eye requirement, the light or floor light illumination is low excessively, long-time continuous sees do not have a rest in the TV centre etc. diminishes eyesight to meeting " two want two not " health.
Description
The invention belongs to the sight protectio utensil.
Existing electronic eyesight protecting unit tool has two types usually: a kind of is an appearance deflection and low-light (level) audible alarm formula; the number of patent application of announcing for No. eight as Chinese patent literature Gazette of Patent for Invention second volume is 85102533 " vision protector "; another kind is strong, low light level illumination light display alarm formula, as " making of simple and easy illuminometer " delivered on the 15th page of 1987 the 9th phases " electric era " magazine.But, no matter that type, complete all exist defencive function not, the problem of poor practicability.
The objective of the invention is to avoid above-mentioned the deficiencies in the prior art part, can carry out general protection basically to eyesight at what the main cause that causes hypometropia at present designed and provide a kind of, easy to use, the electronic eyesight protecting unit that practicality is very strong.
Electronic eyesight protecting unit of the present invention is made up of photoelectric automatic control circuit, delay circuit, warning circuit, timer, two moment timing signal output control circuit, body position sensor, books and eye distance monitoring sensor, seat appearance and books and the mandatory delimiter of eye distance, direct supply, power switch, shell, and its feature exists:
A, in photoelectric automatic control circuit 2, only reach two above optical elements as the light sampling detector by two, the light sampling detector is connected with resistance respectively, be connected between positive source and the negative pole, the contact of light sampling detector and resistance and photo amplifier input end join and form undesired illumination controlling alarm end more than two kinds and two kinds respectively; By the fixing undesired illumination alarming value of resistance, by the undesired illumination alarming value more than two and two, fixing normal brightness value scope, the output terminal of photo amplifier and delay circuit, warning circuit join; The output terminal of photo amplifier also is connected to the light emitting diode of different colours, is used to refer to warning reason;
B, in warning circuit 4, the biasing that oscillatory circuit is equipped with different numerical value more than two kinds and the two kinds oscillating element of holding concurrently; The double oscillating element of these biasings, by photoelectric automatic control circuit, two moment timing signal output control circuits, body position sensor are controlled it and are inserted and disconnection respectively, to change the alerting signal of oscillation frequency generation more than two kinds of oscillatory circuit, be used for distinguishing different warning reasons;
C, increased timer 6 newly, two moment timing signal output control circuits 1, timer directly is not connected on the power supply by power switch, is convenient to observe at any time take the time; Two moment timing signal output control circuits are made up of two back off timers and one-level start-up circuit; Wherein the normal read-write of back off timer control reaches the time of seeing TV continuously, the time of another back off timer control bait; Two back off timers couple together, under the promotion of starting level, from the closed timing output alarm signal that automatically goes round and begins again of power switch by above order, until the powered-down switch, be used for guaranteeing to read and write continuously and see that eyes have the sufficient time of having a rest in the TV process, avoid eye strain.
D, recessed putting at the optical sensor and the casing coupling pull bar of casing coupling pull bar front end are formed books and eye distance monitoring sensor, casing coupling pull bar double as seat appearance and books and the mandatory delimiter of eye distance; It is 0.9 chi that casing coupling formula pull bar is pulled out total length, and the back total length that contracts is 0.25 chi.
Advantage of the present invention: protect comprehensively, practical and easy to use, as adhere to electronic eyesight protecting unit of the present invention is carried use, can effectively prevent bathomorphic generation.
Below in conjunction with drawings and Examples electronic eyesight protecting unit of the present invention is described further:
Fig. 1 is an electronic eyesight protecting unit circuit diagram of the present invention.
Fig. 2 is the scheme of installation of low light level illumination sampling detector cdsi in the circuit shown in Figure 1.
Fig. 3 is the structural representation of body position sensor in the circuit diagram shown in Figure 1.
Fig. 1 circuit is an electronic eyesight protecting unit optimum implementation of the present invention.
Fig. 1 circuit includes by light sampling detector cds
1, cds
2, cds
3, warning illuminance setting resistance R
1, R
2, R
3And photoelectricity amplifying triode BG
1, BG
2, BG
3The photoelectric automatic control circuit of forming 2, cds
1With resistance R
1Be in series and be connected between positive source and the negative pole cds
1With resistance R
1Contact and triode BG
1Base stage join, form weak illumination controlling alarm end A, alarming value is 100 Luxs, cds
2With resistance R
2Be in series and be connected between positive source and the negative pole cds
2With resistance R
2Contact and triode BG
2Base stage join, form strong illumination controlling alarm end B, alarming value is 1000 Luxs, cds
3With resistance R
3Be in series, be connected between positive source and the negative pole cds
3With resistance R
3Contact and triode BG
3Base stage join and form the weak illumination controlling alarm end C of floor light, between weak illumination alarming value 100 Luxs under the weak illumination controlling alarm end A control and strong illumination alarming value 1000 Luxs under strong illumination controlling alarm end B controls is normal brightness value scope 100 Luxs～1000 Luxs, between illumination alarming value a little less than the floor light under the illumination controlling alarm end C control a little less than the floor light and zero illumination is the undesired scope of floor light illumination, photoelectricity amplifying triode BG
1, BG
2Be in parallel capacitor C in its collector contact and the delay circuit 3
1Negative pole, BG
4Emitter join and form output terminal C
1, at output terminal C
1And be connected to red light emitting diodes LED between the positive source, photoelectricity amplifying triode BG
3Collector and the output terminal b of body position sensor 5, two moment timing signal output control circuit output terminal join, be connected in warning circuit 4BG
5Emitter on form the total output terminal E of control signal, between total output terminal E and positive source, be connected to green LED LED.
Fig. 1 circuit also includes one by resistance R
4And capacitor C
1, transistor BG
4The delay circuit of forming 3, BG
4Collector and the total output terminal E of control signal join, the effect of delay circuit is to postpone photoelectric automatic control circuit BG
1, BG
2Output, warning circuit is connected in time-delay, prevents to cause that because of interference in short-term warning circuit sends unnecessary frequent warning.
Warning circuit 4 is by transistor BG in Fig. 1 circuit
5, resistance R
5, inductance L, capacitor C
2Form, by photoelectric automatic control circuit A, B control end, the squegger of delay circuit control starting of oscillation is again by BG
5, R
5, L is made up of photoelectric automatic control circuit C control end, two moment timing signal output control circuits, the audio frequency oscillator of body position sensor control starting of oscillation, wherein capacitor C
2Be to control it automatically by the output of each control circuit to insert and disconnect, it is on the function in the disconnection on the circuit with inserting, rather than electric capacity itself, also is equally to the control of the main element transistor emitter that shakes, BG
5Collector and warning sounding component HTD be connected on a end of inductance L mutually, base stage then with resistance R and capacitor C
2Negative pole joins, resistance R
5With C
2Positive contact and HTD be connected on the c end of inductance L mutually, the b end of inductance L joins BG with positive source
5Emitter be connected on the total output terminal E of control signal.
Timer 6 adopts the quartz electronic watch core of liquid crystal display in Fig. 1 circuit, two moment timing signal output control circuits 1 adopt two-stage long delay monostable circuit, and the output of one-level delay pulse starts the level connection and gets up to form regularly output signal circuit of two automatic program controls constantly.Wherein start level and be used to guarantee each power-on switch, monostablely all start working from the first order, during fixed response time since first program by 45 minutes, 10 minutes, 45 minutes ... program loop reciprocally export timing signal, until the powered-down switch.
Low light level illuminance transducer cds in Fig. 1 circuit
1Installation see Fig. 2, its light-sensitive surface is recessed to be put at casing coupling formula pull bar 2 front ends, double as books and eye distance monitoring sensor; Transparent dust cover 1 is equipped with on light-sensitive surface top.
The structure of body position sensor 5 is seen shown in Figure 3 in Fig. 1 circuit, it is made up of with hole, garden copper sheet 3 drop wire 1, hanging wire 2, hang hammer 2 and forms, hang when plastic sheet b is used to prevent strenuous exercise and hammer 2 into shape and throw away outside the hole, copper sheet garden and cisco unity malfunction by "painted-face" character in opera a and the plastic sheet b that is slightly larger than hole, copper sheet garden.Plastic sheet b is fixed on below the "painted-face" character in opera.Hang hammer 2 and below hole, garden copper sheet 3, up place in the middle of the hole, copper sheet garden, leave suitable space all around; Above hanging hammer with vertical line 1 be mutually, vertical line 1 other end ties up to cover top portion, and vertically in the middle of hole, copper sheet garden, hole, garden copper sheet is fixed on the middle and lower part of shell to extension hammer 2 thus.
E is a direct supply in Fig. 1 circuit, and K is a power switch.
An exemplary embodiments of Fig. 1 circuit is by regulating resistance R
1, R
2, R
3Resistance determine that weak illumination alarming value scope is 150
-50～250
+ 50Between the Lux; the weak illumination alarming value of floor light is a floor light and the ratio of key lighting or TV screen illumination is 1: 8; the illumination needs of study had both been satisfied; protected eyesight; reduced the consumption of electric energy again; make it be operated in zone of reasonableness; the gap that body position sensor is hung between hammer 2 and the hole, copper sheet garden is decided to be 5 millimeters; make body appearance angle of inclination greater than 30 ° or have greatly and rock; just connect warning circuit when walking and report to the police, avoid frequent warning, the time sequencing of timing signal output is 45 minutes; 10 minutes; be in order to adapt class hour with school, also to meet the physiological requirement of eyes.
The course of work of electronic eyesight protecting unit of the present invention is such: daily owing to timer directly is connected on the power supply E; timer is operate as normal always; at any time observing time; when reading, writing and seeing TV; closed power switch K, at this moment electronic eyesight protecting unit enters the general protection duty to eyesight.As do not meet that " two want two not " health requires with eye and light reading down; there is not floor light when seeing TV or floor light illumination is low excessively; when seeing that for a long time TV is not had a rest midway etc. and diminishing the situation of eyesight, electronic eyesight protecting unit will send sound or sound and light alarm signal automatically.Lock is stated respectively below:
When continuous reading and when seeing promptly 45 minutes TV time a to class hour, two moment timing signal output control circuit output timing alarm reasons, prompting should take a momentary rest, when the time of having a rest arrived 10 minutes, two moment timing signal output control circuits were exported the timing alarm signal once more, informed that the time of having a rest finishes, can continue reading and writing and see TV, so move in circles, thereby guaranteed continuous read-write and seen that eyes have the sufficient time of having a rest in the TV process, avoided eye strain.
When reading occasion light is lower than 150
-50During Lux, photoresistance cds
1The photoelectricity resistive is big, and control end A point current potential raises, BG
1Transfer conducting, output terminal C to by ending
1Current potential drop near zero shape by+E, by the delay circuit time-delay, make warning circuit send intermittently alerting signal; Red light emitting diodes is also lighted the indication warning reason simultaneously.
When reading occasion light is higher than 250
+ 50During Lux, photoresistance cds
2Light resistance diminishes, and control end B point current potential raises, BG
2Transfer conducting, output terminal C to by ending
1Current potential drop near zero shape by+E, by the delay circuit time-delay, make warning circuit send the gap alerting signal, red light emitting diodes is also lighted the indication warning reason simultaneously.
When reading and writing, not having when seeing TV floor light or floor light illumination ratio under the light and be 1: 8 with light key lighting illumination or TV screen illumination, photoresistance cds
3Light resistance is very big, and control end C point current potential raises, BG
3Transfer conducting, output terminal C to by ending
2Current potential drop near zero shape by+E, make warning circuit obtain power work and send as the tired continuous alarm sound of making an uproar that makes us that the cicada cried, stop and under the situation of this light environment quality difference, continue study, the while green LED is lighted the indication warning reason.
When sitting posture leans forward or book when being bordering on 1 chi apart from eyes, because low light level illuminance transducer has been covered a part of light by book, the illuminance that sensor is experienced is lower than actual illumination, arrives weak illumination alarming value, HTD sends intermittently chimes of doom, and red light emitting diodes is lighted the indication warning reason simultaneously.Surpass 30 ° when the seat appearance leans forward, when book is bordering on 0.9 chi apart from eyes, casing coupling formula pull bar front end props up book or desktop makes its distance can't be close again.
The seat appearance is improper just dilapidated when reading a book and reading in the vehicle of reading a book or shaking of walking and lie on a bed, when swing surpasses 30 °, body position sensor is hung hammer and is contacted with hole, copper sheet garden, connect warning circuit, reading lies on a bed, the continuous alarm signal is sent in the improper timing of seat appearance, walks or reads a book in the vehicle that shakes and then send interrupted alerting signal.The warning reason of green LED indication simultaneously.
Claims (9)
1, well-known electronic eyesight protecting unit, form by photoelectric automatic control circuit, delay circuit, warning circuit, body position sensor, power supply, switch, shell, its photoelectric automatic control circuit is made the light sampling detector by an optical element, set normal brightness value and warning brightness value with a resistance, with photo amplifier control output, delay circuit is used to postpone the output of photoelectric automatic control circuit, prevents to cause unnecessary frequent warning because of disturbing in short-term; Warning circuit sends audio frequency monophone alerting signal or visual alarm under the output control of photoelectric automatic control circuit, body position sensor; Body position sensor is used to monitor whether deflection of sitting posture, and connects warning circuit and report to the police; Feature of the present invention be:
A, in photoelectric automatic control circuit 2, only reach two above optical elements as the light sampling detector by two, the light sampling detector is connected with resistance respectively, be connected between positive source and the negative pole, the contact of light sampling detector and resistance and photo amplifier input end join and form undesired illumination controlling alarm end more than two kinds and two kinds respectively; By the fixing undesired illumination alarming value of resistance; By the undesired illumination alarming value more than two and two, fixing normal illumination range; The output of photo amplifier can be joined with delay circuit, warning circuit separately or form OR circuit and is connected with delay circuit, warning circuit;
B, in warning circuit 4, the biasing that oscillatory circuit is equipped with different numerical value more than two kinds and the two kinds oscillating element of holding concurrently, respectively by photoelectric automatic control circuit, two moment timing signal output control circuits, body position sensor is controlled it and is inserted and disconnection, to change oscillation frequency, produce the alerting signal more than two kinds and two kinds;
C, increased timer 6 newly, two moment timing signal output control circuits 1, timer by power switch, directly are not connected on the power supply, and two moment timing signal output control circuits are made up of two back off timers and one-level start-up circuit; Wherein the normal time of reading and writing and seeing TV continuously of back off timer control, the another back off timer is controlled the time of bait; Two back off timers couple together, and under the promotion of starting level, the timing output alarm signal that automatically goes round and begins again by above order during from the power switch closure is until the powered-down switch;
D, recessed putting at the optical sensor and the casing coupling pull bar of casing coupling pull bar front end are formed books and eye distance monitoring sensor, casing coupling formula pull bar double as seat appearance and books and the mandatory delimiter of eye distance.
2, electronic eyesight protecting unit according to claim 1 is characterized in that weak illumination alarming value is 150
-50Lux, strong illumination alarming value is 250
+ 50Lux, normal illumination is 150
-50-250
+ 50Between the Lux.
3, electronic eyesight protecting unit according to claim 1 is characterized in that the weak illumination alarming value of floor light is a floor light and the ratio of key lighting or TV screen illumination is 1: 8.
4, electronic eyesight protecting unit according to claim 1 is characterized in that in the body position sensor 5, hangs hammer 2 and is made up of "painted-face" character in opera a and the plastic sheet b that is slightly larger than the copper sheet hole, and plastic sheet b is used to prevent hang hammer and throws away outside the copper sheet hole.Plastic sheet b is fixed on below the "painted-face" character in opera.
5, electronic eyesight protecting unit according to claim 1; it is characterized in that timer adopts the quartz electronic watch core of liquid crystal display; two moment timing signal output control circuits are by two-stage long delay monostable circuit; the one-level start-up circuit couples together, and forms regularly output signal circuit of two automatic program controls constantly.
6, electronic eyesight protecting unit according to claim 1; the time and the order that it is characterized in that the output of two timing signal of timing signal output control circuit constantly are: 45 minutes for the first time; 10 minutes for the second time; be again 45 minutes for the third time; and the output timing signal that so moves in circles, until the powered-down switch.
7, electronic eyesight protecting unit according to claim 1 is characterized in that each alerting signal control circuit output terminal is connected to the LED of different colours, and they report to the police together with chimes of doom and indicate different warning reasons.
8, electronic eyesight protecting unit according to claim 1 is characterized in that the output of each alerting signal control circuit can control warning circuit separately or be connected into OR circuit centralized control warning circuit.
9, electronic eyesight protecting unit according to claim 1 is characterized in that weak, high light illumination alerting signal control circuit output terminal is connected on the delay circuit, and other each alerting signal control circuit output terminals directly are connected on the warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90107599 CN1049421A (en) | 1990-09-08 | 1990-09-08 | Electronic eyesight protecting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90107599 CN1049421A (en) | 1990-09-08 | 1990-09-08 | Electronic eyesight protecting unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1049421A true CN1049421A (en) | 1991-02-20 |
Family
ID=4880620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90107599 Pending CN1049421A (en) | 1990-09-08 | 1990-09-08 | Electronic eyesight protecting unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1049421A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093719B (en) * | 2006-06-23 | 2011-05-04 | 鸿富锦精密工业（深圳）有限公司 | Method for protecting hearing ability, and audio playing system with function of protecting hearing ability |
| CN103581415A (en) * | 2012-08-02 | 2014-02-12 | 百度在线网络技术（北京）有限公司 | Method for warning user of mobile terminal and mobile terminal |
-
1990
- 1990-09-08 CN CN 90107599 patent/CN1049421A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093719B (en) * | 2006-06-23 | 2011-05-04 | 鸿富锦精密工业（深圳）有限公司 | Method for protecting hearing ability, and audio playing system with function of protecting hearing ability |
| CN103581415A (en) * | 2012-08-02 | 2014-02-12 | 百度在线网络技术（北京）有限公司 | Method for warning user of mobile terminal and mobile terminal |
| CN103581415B (en) * | 2012-08-02 | 2015-12-09 | 百度在线网络技术（北京）有限公司 | The method of the user of prompting mobile terminal and mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |