CN2690990Y - Multifunction video frequency eye protection visual distance monitor - Google Patents

Abstract

The utility model discloses a multifunction video frequency eye protection visual distance monitor which can be matched with a video frequency appliance within a close range and can also form an eye protection lamp with a desk lamp, mainly comprising a casing, an embedded loudspeaker, a control circuit board arranged in the casing, a control box assembled by each connecting port, and a support connected with a fixedly adjusting reflection switch. The control circuit board is provided with a connecting circuit of the reflection switch, a power circuit, a time delay control alarm circuit, and a time delay forced control circuit. The secure visual distances between the eyes and the posture of the people and the display screen can be detected through an infrared detecting probe; when the eyes are too near or the posture is incorrect, the infrared detector sends out the signal with the high potential, producing a language prompt through the time delay alarm circuit; when the visual distance is still within the harmful range, the forced control circuit can automatically close the power supply of the display device or the power supply of the desk lamp, alarming and forcedly controlling the people to correct the visual distance and the sitting posture; accordingly, the eye sight of the people who operate before the display screen for a long time can be effectively protected; the myopia and the hump are prevented, and the multifunction video frequency eye protection visual distance monitor is helpful for body health.

Description

Multi-functional video eyeshield sighting distance watch-dog

Technical field:

The utility model relates to a kind of eyeshield with video apparatus adapted and detects the control electronic installation, especially by detecting the multi-functional video eyeshield sighting distance watch-dog that control reaches vision protection and correcting sitting postures.

Background technology:

At present, along with computing machine is used widely and popularized, operating computer is played games, and desk lamp reading has down closely linked to each other with people's work, study, life, the eye fatigue that the Long contact time display screen causes, visual deterioration, the factor of unfavorable health such as hunchback is perplexing people, and particularly youngsters and children uses computer learning and plays games, chat on line, time one length not only can cause myopia to be more vulnerable to the influence of harm ray radiation.The prevention hypometropia; the technical products of vision protection is market-oriented successively; this invention of known computing machine electronics position monitor (ZL00206237,2) utilizes computer operator's face that ultrared reflection is monitored position, and this monitor can send the sound and light alarm signal when near excessively.But existing, this instrument ignores the detection of distance and the effect of control by force.

Summary of the invention:

In order to overcome the deficiencies in the prior art, the utility model provide a kind of closely with the supporting use of video apparatus, also can form eye-protecting lamp with desk lamp, at any time detect control at any time, time-delay verbal cue, time-delay is control by force, can avoid the multi-functional video eyeshield sighting distance watch-dog of frequent starting.By detecting control, send verbal cue, reminds people is corrected sighting distance and sitting posture, thereby has protected the eye eyesight of long period of operation person before display screen effectively, helps healthy.

The technical scheme that the utility model adopted is: a kind of by housing 1 boombox 2 and be installed in the control circuit board in the housing and respectively patch control enclosure that port forms and be connected and fixed the support 9 of adjusting the infrared reflection switch and formed multi-functional video eyeshield sighting distance watch-dog, control circuit board is provided with infrared reflection switch connecting circuit, power circuit, time-delay control warning circuit (verbal cue), the control circuit by force of delaying time.

When using multi-functional video eyeshield sighting distance watch-dog, detection head is placed allow the head of infrared reflection switch (being detection probe) above the display screen of display or game machine in the face of the computer operator, position according to human body, adjust the high and low position of infrared reflection switch by the mobile connection strap on the support, after the energized, the infrared detection probe begins to detect people's eyes, the safe sight distance of position and display screen, eyes are crossed the not timing of nearly position, infrared detector sends the signal of a noble potential, pass through delayed alarm circuit, at first produce verbal cue, if sighting distance also is in harmful scope, the control circuit by force that is provided with will cut out the display power supply of computer automatically, and verbal cue sound will progressively reduce this moment.In sighting distance, position placed safe distance, the former sound signal of computer will be recovered automatically, and display is also resumed work.The break-make of display power supply can not have any influence to the host data transmission.

The beneficial effects of the utility model are detection sensitivity height, and the sighting distance range of control can keep the comfortable, healthy of vision, have played the effect of correcting sitting postures simultaneously when the monitoring sighting distance again, to paying close attention to the teenager, play the effect that improves health care consciousness away from myopia.

Description of drawings:

Fig. 1 is the utility model shape assumption diagram

Fig. 2 is circuit theory diagrams of the present utility model

Fig. 3 is K2 relay 14 post wiring diagrams in the utility model circuit

Embodiment:

Be described in further detail below in conjunction with shown in the accompanying drawing, form control enclosure at Fig. 1 middle shell 1 boombox 2 and the control circuit board that is installed in the housing, be provided with the fixed orifice 3 that the infrared reflection switch is installed when cooperating desk lamp to use, alternating current input end 4, audio output 5, audio input end 6, the power supply of infrared reflection Switching Power Supply, signal input and earth terminal 7, the Alternating Current Power Supply end 8 that computer and desk lamp work are used, be fixed with infrared reflection switch 10 on the support 9, removable hole frame 11, mobile connection strap 12, the fixed leg 13 that is used for fixation reflex switch on the display, the power supply transmission line connects the reflex switch on control enclosure and the support.

In Fig. 2, JX1 is that 220V input, commutation diode D1 D2, electrochemical capacitor C1 C2 C6, high-frequency filter capacitor C3 C4 C7, transformer T, fuse Fs, resistance R 1 R2 and voltage stabilizing chip IC 1 (7812) IC2 (7809) IC4 (7806) etc. form the rectifying and wave-filtering voltage-stabilized power supply circuit on the control circuit board; D1 is anodal to join with transformer secondary output, the end of the positive pole of negative pole and C1 and C3 R1 joins, the other end ground connection of the negative pole of C1 and C3,1 pin of another termination IC1 of R1,2 pin ground connection, 3 pin connect the moving contact end of K1, the D2 cathode connecting transformer is secondary, negative pole connects the positive pole of C2, the end of C4 and the end of R2, the end ground connection of the negative pole of C2 and C4,1 pin of the termination IC2 of R2,2 pin ground connection, 3 pin connect the positive pole of C6, the end of C7 also links to each other the negative pole of C6 with 1 pin of IC4, the equal ground connection of 2 pin of the end of C7 and IC4,3 pin connect the anodal of D4 and are connected with the end of K1 K3 R5 R8.Diode D3 D4, resistance R 4 R13, loudspeaker Y, electrochemical capacitor C5 and language chip IC3 etc. form the verbal cue circuit; The positive pole of C5 connects the end of R13, the collector of the amplifying triode of another termination IC3 language chip of R13, and the D3 positive pole connects the negative pole of IC3 language chip, and the negative pole of D3 and the collector of VT2 join.Infrared reflection switch input link JX2, resistance R 5 R6 R10 R11 R12, electrochemical capacitor C8, two utmost points close D6, triode VT1 VT2 VT5, relay K 1 K2, audio frequency input/output terminal JX3 etc. forms time-delay control warning circuit; R10 one end ground connection, the base stage of another termination VT5, the signal output part of the termination infrared reflection switch of R11, the other end links to each other with the base stage of VT5, the emitter of VT5 connects the end of R12, the other end of R12 links to each other with the base stage of VT1, the grounded collector of VT5, the positive pole of D5 connects the signal output part of infrared reflection switch, negative pole connects the end of R6, the positive pole of another termination C8 of R6, the base stage of VT1, VT1 collector connect the end of R5, the negative pole of D6, emitter connect the base stage of VT2, the collector of VT2 connects the positive pole of D6 and the end of coil K1, grounded emitter, the minus earth of C8, control end JX4 by force, resistance R 7 R8, electrochemical capacitor C9, diode D7, triode VT3 VT4 and K switch 3, discharge resistance R9 forms the control circuit by force of delaying time; The left end of R7 connects the normally opened contact of K2, right-hand member connects the base stage of VT3, the collector of VT3 connects the left end of R8, and the R8 right-hand member connects the D7 negative pole, and the VT3 emitter connects the VT4 base stage, the VT4 grounded emitter, collector connects the positive pole of D7 and the end of coil K3, and the positive pole of C9 connects VT3 base stage, minus earth, the positive pole of the termination C9 of R9, the other end connects the normally closed contact of K2.

The principle of work of its control circuit is: just export a high level after the infrared ray reflex switch detects signal, this noble potential makes the VT1 conducting after R6 C8 time-delay (about 5 seconds), VT2 is conducting also, relay K 1 closure, K2 is also closed thereupon, after the VT2 conducting, collector reduces current potential, D3 is with conducting, the work of IC3 language chip, loudspeaker has the verbal cue voice output when circuit starts by force, it is bright that verbal cue sound will reduce sound gradually, and when with computer or game machine adapted, the language sound signal connects C5 through R13 and delivers to the normally opened contact of K2 to audio-frequency power amplifier, after computer stereo sends language, the former sound signal that will close computer this moment will automatically switch in the verbal cue circuit.The voltage that resets to C8 two ends when awaiting orders monitor state when warning circuit can not disappear at once, needs to give C8 discharge by force, makes the delay time of having an appointment 5 seconds before each warning.The base stage of VT5 provides noble potential for base stage after R10 R11 dividing potential drop when signal, VT5 ends, relevant alarm control circuit work, base stage is electronegative potential VT5 conducting when finishing when reporting to the police, emitter, collector by R12 VT5 provide path to formation loop, ground for the C8 discharge, and very zero this pipe of emission that the C8 discharge finishes back VT5 is in cut-off state again.The noble potential that another road reflex switch is sent in the K2 closure starts control circuit VT3 VT4 conducting by force through the delay circuit (about about 1 minute) that the K2 normally opened contact is sent to R7 C9 composition after delaying time, K3 closure (K3 has normally-open normally-close, selects as required).D6 D7 is that the protection diode is to prevent the breakdown damage of switching tube; R9 is a discharge resistance; adopt discharge circuit to be provided with in order to prevent Fraquent start from controlling by force; no matter the time length of stopping; also no matter how long be separated with between the distance of sighting distance; all pick up counting when signal is arranged, do not put just charging of electricity, make the former free shortening of setting to prevent electric capacity.

Control by force in the circuit is control display power supply break-make, game machine display screen on/off, (also can select normally-open normally-close as required) of desk lamp on/off.

In the embodiment shown in fig. 3, the female connection of institute's marking-up among the figure is pressed in each post wiring of relay.

This monitor compact conformation, simple to operate, easy to use, cost is low, and the reliability height is effective.

Claims (4)

1, a kind of multi-functional video eyeshield sighting distance watch-dog includes housing (1), boombox (2), reflex switch fixed orifice (3) ac input end (4), audio output (5), audio input end (6), Wiring port (7), Alternating Current Power Supply end (8) and is installed in the control enclosure that the control circuit board in the housing is formed; Also include control circuit board and be provided with power circuit, verbal cue circuit, time-delay control warning circuit, the control circuit by force of delaying time; It is characterized in that: described control enclosure connects support (9) by the power supply transmission line and goes up the whole infrared reflection switch (10) of stationary adjustable, is being connected with removable hole frame (11), mobile connection strap (12) on the support, is being used for the fixed leg (13) of fixation reflex switch on the display.

2, multi-functional video eyeshield sighting distance watch-dog according to claim 1, it is characterized in that: JX1 is the 220V input on the described control circuit board, D1 is anodal to join with transformer secondary output, the positive pole of negative pole and C1 and C3 R1 one end join, the other end ground connection of the negative pole of C1 and C3,1 pin of another termination IC1 of R1,2 pin ground connection, the D2 cathode connecting transformer is secondary, negative pole connects the positive pole of C2, the end of C4 and the end of R2, the end ground connection of the negative pole of C2 and C4,1 pin of the termination IC2 of R2,2 pin ground connection, 3 pin connect the positive pole of C6, the end of C7 also links to each other the negative pole of C6 with 1 pin of IC4, the equal ground connection of 2 pin of the end of C7 and IC4 etc. has been formed the rectifying and wave-filtering voltage-stabilized power supply circuit;

3 pin of IC1 connect the moving contact end of K1,3 pin of IC4 connect the anodal of D4 and are connected with the end of K1, K3, R5, R8, the positive pole of C5 connects the end of R13, the collector of the amplifying triode of another termination IC3 language chip of R13, the D3 positive pole connects the negative pole of IC3 language chip, and the negative pole of D3 and the collector of VT2 join etc. and to have formed the verbal cue circuit;

R10 one end ground connection, the base stage of another termination VT5, the signal output part of the termination infrared reflection switch of R11, the other end links to each other with the VT5 base stage, the emitter of VT5 connects the end of R12, the other end of R12 links to each other with the base stage of VT1, the grounded collector of VT5, the positive pole of D5 connects the signal output part of infrared reflection switch, and negative pole connects the end of R6, the positive pole of another termination C8 of R6, the base stage of VT1, the VT1 collector connects the end of R5, the negative pole of D6, emitter connect the base stage of VT2, and the collector of VT2 connects the positive pole of D6 and the end of coil K1, time-delay control warning circuit has been formed in grounded emitter, the minus earth of C8 etc.;

The left end of R7 connects the normally opened contact of K2, right-hand member connects the base stage of VT3, the VT3 collector connects the left end of R8, and the right-hand member of R8 connects the D7 negative pole, and the VT3 emitter connects the VT4 base stage, the VT4 grounded emitter, collector connects the positive pole of D7 and the end of coil K3, and the positive pole of C9 connects VT3 base stage, minus earth, the positive pole of the termination C9 of R9, the normally closed contact of other end connection K2 etc. has been formed the control circuit by force of delaying time.

3, multi-functional video eyeshield sighting distance watch-dog according to claim 2 is characterized in that: described time-delay control warning circuit, the delay time of having an appointment 5 seconds before each the warning.

4, multi-functional video eyeshield sighting distance watch-dog according to claim 2, it is characterized in that: described time-delay control circuit by force needs about about 1 minute delay time, starts control circuit VT3 VT4 conducting by force after delaying time, the K3 closure, K3 has and normally closedly often opens, and selects as required.

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