CN2847005Y - Ultrasonic anti-shortsightedness sitting gesture correction desk lamp - Google Patents
Ultrasonic anti-shortsightedness sitting gesture correction desk lamp Download PDFInfo
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- CN2847005Y CN2847005Y CNU2005200792308U CN200520079230U CN2847005Y CN 2847005 Y CN2847005 Y CN 2847005Y CN U2005200792308 U CNU2005200792308 U CN U2005200792308U CN 200520079230 U CN200520079230 U CN 200520079230U CN 2847005 Y CN2847005 Y CN 2847005Y
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S6/00—Lighting devices intended to be free-standing
- F21S6/002—Table lamps, e.g. for ambient lighting
- F21S6/003—Table lamps, e.g. for ambient lighting for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
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Abstract
The utility model relates to a health care table lamp, particularly to an ultrasonic myopia preventing sitting posture correcting table lamp. The utility model helps students of middle schools and primary schools to maintain correct reading and writing postures and to prevent myopia. The utility model comprises a head detecting circuit which is composed of a lamp holder, a lamp bracket, a lamp shade and an ultrasonic circuit, a human detecting circuit, a system control circuit and an alarm circuit, wherein a probe of at least one of the head detecting circuit and the human detecting circuit detection is a combined probe combining transmission and reception into a whole, a detecting alarm surface is formed by ultrasonic waves of the head detecting circuit in front of a lamp body, and an object which are lower than the alarm surface can not reflect the ultrasonic waves to the head detecting circuit to receive the ultrasonic waves. When the eye release of a user is very short and the posture of the user is not correct, the table lamp can send out a prompt alarm. Besides, the table lamp can limit the time of the continuous study and the intermittent rest of users according to output signals of the body detection circuit.
Description
Affiliated technical field
The utility model belongs to the daily living article technical field, relates to a kind of light fixture, and particularly a kind of students in middle and primary schools of helping keep the health desk lamp of correct read-write posture and pre-myopia prevention.
Background technology
Keep the reading and writing posture hold water to the teenager particularly students in middle and primary schools be vital.At present,, study insufficient light improper because of the sighting distance of reading and writing, the continuous crooked bow-backed phenomenon of long-time students in middle and primary schools' hypopsia, myopia and cervical vertebra excessively former with eye and fault etc. thereby that cause have become the extensively problem of attention of society.For addressing the above problem, I have applied for " the pre-myopia prevention of infrared and ultrasonic wave is rectified the sitting posture desk lamp " patent and granted (patent No. is: ZL 200420042072.4) before this in China.And its structure is complicated, cost is higher and the Installation and Debugging inconvenience, thereby also is not easy to large-scale production.
The utility model content
The purpose of this utility model is to provide that a kind of structure is more simple, integrated level is higher, cost is lower, debugging is more easy; be convenient to the good ultrasonic wave myopia prevention right sitting position desk lamp of large-scale production and result of use; in order to overcome the existing in prior technology defective; guaranteed correct sighting distance and the sitting posture of teenager user when study, and then its eyesight and health have effectively been protected.
For achieving the above object and the design technical solution be such: a kind of ultrasonic wave myopia prevention right sitting position desk lamp that is provided, comprise lamp socket, lamp bracket, lampshade, the head detection circuit of forming by ultrasonic circuit, the human body detection circuit of forming by ultrasonic circuit, system, control circuit and warning circuit, its characteristics are that having the probe of a circuit in said ultrasonic wave head detection circuit or the human body detection circuit at least is that ultrasonic wave transmits and receives the zoarium probe into one, the top that the probe of head detection circuit is positioned at lampshade or lampshade (also can and connect the congenerous probe, so that increase the investigative range of head), the probe of human body detection circuit is positioned on the lamp body, the output of head detection circuit and human body detection circuit is connected with the respective input of system, control circuit respectively, the alarm control signal output of system, control circuit is connected to the signal input part of warning circuit, also can be provided with the photosensitive light measuring circuit of electronics in the circuit, the output of the photosensitive light measuring circuit of electronics is connected with the respective input of warning circuit or system, control circuit and links to each other, and its light-sensitive device is installed on the lamp body.
Because the direction of head detection circuit probe or blocking of notch body (can being that the hole also can be the object of a certain qualification ultrasonic wave direction before the probe) arranged, when the probe of head detection circuit is launched ultrasonic wave → reception ultrasonic reflections signal, just form ultrasonic listening warning face at a certain low level in lamp body the place ahead, the object that is lower than this warning face can't reflex to the ultrasonic signal that probe sent of head detection circuit in this circuit and receive, when the probe of human body detection circuit is launched ultrasonic wave → reception ultrasonic reflections signal in addition, also form investigative range in lamp body the place ahead.In the foregoing circuit one or when all using the zoarium probe that transmits and receives to one, circuit need be through emission ultrasonic wave → stop → the receiving process of ultrasonic reflections signal, so that fit probe has the time that stops shaking, make to receive to be the ultrasonic reflections signal really.In the use, in investigative range before the desk lamp, have the people and when user's sitting posture correct, can receive the ultrasonic reflections signal of human body during the human body detection circuit working, also can receive the ultrasonic reflections signal of head during the work of head detection circuit, this moment, warning circuit was not reported to the police, when working, the head detection circuit do not receive reflected signal, and receive signal during the human body detection circuit working, (illustrate this moment the user head apart from desktop cross near or head to the left and right excessive the or health of deflection too lean forward), then in the system, control circuit is used for limiting that the user is of short duration bows, excessively excessively the lean forward delay timer of maximum duration of torticollis or health picks up counting, after reaching setting-up time (as 20 seconds), warning circuit is reported to the police, urge the user to sit collection, when the head detection circuit is worked, do not receive when receiving reflected signal (head is normal apart from desktop) or human body detection circuit working and stop behind the signal (people leaves) reporting to the police.When the human body detection circuit working, do not receive signal, illustrate that lamp is preceding unmanned, system, control circuit also can limit the user once maximum duration of sustainable study and the shortest time that tempus intercalare should be had a rest according to the output signal of human body detection circuit in addition, also can determine when to carry out the monitoring of ambient light simultaneously.
Compared with prior art; myopia prevention right sitting position desk lamp described in the utility model has better reliability, intelligent degree is higher, cost is lower, Installation and Debugging are simpler, be convenient to large-scale production; its product can remind at any time the user particularly students in middle and primary schools note vision protection; impel them to form correct read-write posture effectively, guarantee their eyesight and the health of body and mind.
Description of drawings
Fig. 1 is the structure external form schematic diagram of an embodiment of the utility model.
Fig. 2 is the structure external form schematic diagram of another embodiment of the utility model.
Fig. 3 is the adoptable a kind of circuit theory diagrams of the utility model.
The specific embodiment
Referring to accompanying drawing 1, a kind of ultrasonic wave myopia prevention right sitting position desk lamp described in the utility model is by lamp socket, lamp bracket (if adopting the lamp bracket of arbitrarily bending just to have more mandatory), lampshade 3 and be located at circuit formation in the lamp body.The zoarium probe 1 of head detection circuit is installed in the top of lampshade 3, the last plane of lampshade is as the notch body, the zoarium probe 2 of human body detection circuit is located on the lamp body (also can have the notch body before this probe, in case the reflection of chair and books), on lamp body, also be provided with light-sensitive device 4, and high brightness luminescent pipe 5 in addition.It is provided with being intended to when ambient light can not reach study requirement, and the prompting user turns on light or adjusts photoswitch.
The zoarium of head detection circuit probe 1 is installed in the top of lampshade 3 in the accompanying drawing 2, the angle that emission axis of its fit probe upwards forms with horizontal plane, and the ultrasonic wave that sends with toilet forms the warning face of the level that approaches at its low level.The object that is lower than this warning face this probe of ultrasonic signal reflected back that (1) is sent of zoarium can't being popped one's head in.The zoarium probe 2 of human body detection circuit is located on the lamp body, also is provided with light-sensitive device 4 in addition on lamp body, reaches high brightness luminescent pipe 5.
Be provided with at least three grades of time-delay time sets in the system, control circuit of the present utility model, its course of work is: man-hour is arranged in investigative range before the desk lamp, the human body detection circuit receives the ultrasonic signal of human body reflection and exports significant level signal (this paper is low level), first timer that is used to limit user continuous learning time this moment in the system, control circuit picks up counting, timing is behind setting-up time (as 45 minutes), warning circuit begins to remind the user to have a rest, leave desktop up to the user, thereafter the human body detection circuit does not receive the ultrasonic signal of human body reflection and exports inactive level signal (this paper is high level), and warning stops; Be used to limit minimum second timer of time of having a rest of answering of user in the system, control circuit picks up counting thereupon, timing still is inactive level (it is preceding that the user does not get back to table yet), then all zero clearings of first and second timers if the human body detection circuit is exported behind setting-up time (as 5 minutes); If the user is second timer is got back to table in setting-up time before, two kinds of situations are arranged this moment: first timer is not still in timing when full when the first timer setting-up time is counted (1), and second timer can automatic clear.(2) counted when full when the first timer setting-up time, warning circuit still can be reported to the police, and the second not zero clearing of timer is still in timing, up to the full setting-up time of the second timer meter.The effect of the 3rd timer then as described above, the maximum duration that be used for limiting that the user of short durationly bows in the read-write process, torticollis or health leans forward excessively.
Referring to accompanying drawing 3, be a practical circuit diagram of example structure described in the utility model, system, control circuit has adopted a kind of system architecture of utilizing chip microcontroller in this structure, by the function of single-chip microcomputer U21 completion logic and first, second and the 3rd timer.Single-chip microcomputer U21 adopts the 89C2051 single-chip microcomputer, it determines when the fit probe of which (human body or head) is launched, when stops, when being received, and it determines operation and the zero clearing and then the output control signal corresponding of first, second and the 3rd timer program according to the output signal of head detection circuit and human body detection circuit simultaneously.
System, control circuit is by forming with the lower part:
(1): wherein capacitor C 23, resistance R 21 constitute reset circuit;
(2): crystal Y21 and capacitor C 24, C25 formation oscillator provide work clock for single-chip microcomputer;
(3): the pierce circuit of being made up of four or two input nor gate 74HC02, resistance R 41, potentiometer R42 potentiometer provides tranmitting frequency for ultrasonic transmit circuit.If the centre frequency of ultrasonic probe is 40KHz, be that ultrasonic transmit circuit produces the 40KHz carrier signal so need an oscillator.Wherein U41A, U41B constitute the fundamental oscillation device, and frequency of oscillation is f=1/ (2.2R42*C43).Get C43=1000p, f=40KHz, R42 ≈ 11K Ω, accurate for making frequency, R42 adopts potentiometer.The output of U41D, two nor gates of U41C is connected to the ultrasonic transmit circuit of head detection circuit and the ultrasonic transmit circuit of human body detection circuit respectively.Two nor gates are controlled by P3.4, P3.5 respectively, the control signal of triode Q52 and P3.5 is through resistance R 54 and the radiating circuit of triode Q53 control ultrasonic wave head detection circuit and separating of receiving circuit, and the control signal of triode Q62 and P3.4 is through resistance R 64 and the radiating circuit of triode Q63 control ultrasonic body detection circuit and separating of receiving circuit.
(4): single chip computer AT 89C2051 is the main control device of system, control circuit, and its total P1, P3 be totally 16 ports, and P3.6 wherein uses as built-in comparator.The one-chip machine port resource is allocated as follows:
P3.3: link to each other with the output of ultrasonic wave head detection circuit;
P3.2: link to each other with the output of ultrasonic body detection circuit;
P3.4: can be (coding) control signal that the ultrasonic body detection circuit provides.
P3.5: can be (coding) control signal that ultrasonic wave head detection circuit provides.
P1.0, P1.1: light intensity detects, and utilizes the chip internal comparator, and whether detect light dark excessively;
The ultrasonic transmit circuit of head detection circuit is made up of resistance R 51, R53, potentiometer R52, the fit probe of ultrasonic wave T-1, triode Q51, Q52.Transmitting is provided by nor gate U4D; Potentiometer R52 control ultrasonic wave transmitting power.
The ultrasonic wave receiving circuit of head detection circuit is made up of resistance R 54, R70, R71, R72, R73, R74, R75, R76, R77, R78, R79, the fit probe of ultrasonic wave T-1, triode Q53, Q71, Q72, Q73, diode D71, capacitor C 71 and amplifier U78A (LM324).After ultrasonic signal is received by ultrasonic probe T-1 among the figure, amplify through triode Q71, Q72 two-stage, send into that amplifier U78A amplifies, shaping, make the reverse output low level of triode Q73 conducting be sent to the P3.3 pin of single-chip microcomputer U21 by the pin output high level of LM324.Ultrasonic wave head detection circuit is made up of its radiating circuit and receiving circuit.
The ultrasonic transmit circuit of human body detection circuit is made up of resistance R 61, R63, potentiometer R62, the fit probe of ultrasonic wave T-2, triode Q61, Q62.Transmitting is provided by nor gate U4C; Potentiometer R62 control ultrasonic wave transmitting power.
The ultrasonic wave receiving circuit of human body detection circuit is made up of resistance R 64, R80, R81, R82, R83, R84, R85, R86, R87, R88, R89, the fit probe of ultrasonic wave T-2, triode Q63, Q81, Q82, Q83, diode D81, capacitor C 81 and amplifier U78B (LM324).After ultrasonic signal is received by ultrasonic probe T-2 among the figure, amplify through triode Q81, Q82 two-stage, send into that amplifier U8B amplifies, shaping, make the reverse output low level of triode Q83 conducting be sent to the P3.2 pin of single-chip microcomputer U21 by the pin output high level of LM324.The ultrasonic body detection circuit is made up of its radiating circuit and receiving circuit.
Single-chip microcomputer U21 utilizes P3.5, P3.3 and P3.4, P3.2 pin to decide head detection circuit and human body detection circuit whether to work (or work is not effectively) better effects if when head detection circuit and human body detection circuit time-sharing work respectively.
(typical circuit has a variety of the photosensitive light measuring circuit of electronics, here be example with a kind of) be that (light is strong more by photo resistance R32, its resistance is low more), potentiometer R31, resistance R 33, R34 form, resistance R 33, R34 constitute divider, this circuit is got R33=R34, so P1.0 voltage is fixed as 1/2VCC, adjusts the R31 resistance and just can set the light thresholding.Whether utilize the voltage comparator of singlechip chip inside to P1.0 and P1.1 end, it is dark excessively to detect light; Cross when dark when light, the voltage of P1.1 is higher than 1/2VCC, and it is high brightness luminescent pipe 5 a burst of flashes of light on the lamp socket that single-chip microcomputer U21 just makes luminous tube LED by the output of P3.7 pin, reminds the user by adjusting switch adjustable ring environmental light; Certainly circuit can be done slightly just increases whether testing environment light is strong excessively simultaneously, can also increase circuit with an automatic light meter, and the very ripe this paper of these circuit is no longer narration just.
Buzzer B21 is audible alarm circuit (is used for abnormal sitting posture true and overtime study remind), and resistance R 22, light emitting diode D21 are visual alarm circuit (be used for light cross remind when dark).
With the head detection circuit is example, when ultrasonic circuit transmits, the P3.5 pin output low level of single-chip microcomputer U21, triode Q53 ends, make radiating circuit and receiving circuit partly isolate, fit probe T-1 is in emission state, triode Q51, Q52 conducting, and the signal of telecommunication that 13 human hair combing wastes of nor gate U4D go out 40KHZ is converted to ultrasonic signal through zoarium probe T-1 and sends; When the ultrasonic circuit received signal, the P3.5 pin output low level of single-chip microcomputer U21, triode Q53 conducting, triode Q51, Q52 end, make radiating circuit and receiving circuit partly isolate, fit probe T-1 is in accepting state, and when single-chip microcomputer U21 decision passes through the output signal that the P3.3 pin detects ultrasonic circuit.When having one to use transmitting and receiving of split to pop one's head in two detection circuits, this circuit can disconnect and transmit and receive circuit, the zoarium probe is become a transmitting probe and a receiving transducer, removing the above-mentioned related device (as: triode Q53, Q52, resistance R 54) that is used for radiating circuit and receiving circuit isolation gets final product.
Human body detection circuit identical with the head detection circuit (but also the partial circuit of common header detection circuit).Circuit get electric after, who launches ultrasonic wave → stop → receiving ultrasonic reflections signal to system, control circuit owing to control two ultrasonic circuit respectively, in investigative range before the desk lamp, have the people and when user's sitting posture correct, during the human body detection circuit working, can receive the ultrasonic reflections signal of human body, also can receive the ultrasonic reflections signal of head during the work of head detection circuit.The input P1.0 of single-chip microcomputer U21, P1.1 pin link to each other respectively with the output (voltage output) of the photosensitive light measuring circuit of electronics, and the output P1.3 pin of single-chip microcomputer U21 links to each other with the input of warning circuit.In the work, head detection circuit and human body detection circuit convert the signal that receives to high-low level and give system, control circuit, after system, control circuit carries out the timing differentiation to input signal, and output corresponding signal control warning circuit.
Warning circuit also can adopt light-off warning common on the market, sound and light alarm, vibration alarming or audio alert alert circuit, and this paper repeats no more.
Claims (4)
1, a kind of ultrasonic wave myopia prevention right sitting position desk lamp, comprise lamp socket, lamp bracket, lampshade (3) and ultrasonic wave head detection circuit, the ultrasonic body detection circuit, system, control circuit, warning circuit, it is characterized in that having the probe of a circuit in said ultrasonic wave head detection circuit or the ultrasonic body detection circuit at least is that ultrasonic wave transmits and receives the zoarium probe into one, the probe of ultrasonic wave head detection circuit is positioned at lampshade (3) top, the probe of ultrasonic body detection circuit is positioned on the lamp body, the output of ultrasonic wave head detection circuit is connected with the respective input of system, control circuit, the output of ultrasonic body detection circuit is connected with the respective input of system, control circuit, and the alarm control signal output of system, control circuit is connected to the signal input part of warning circuit.
2, a kind of ultrasonic wave myopia prevention right sitting position desk lamp according to claim 1, the probe that it is characterized in that ultrasonic wave head detection circuit is fit probe (1), it is positioned on the lampshade (3), and the probe of ultrasonic body detection circuit is a fit probe (2), and it is positioned on the lamp body.
3, a kind of ultrasonic wave myopia prevention right sitting position desk lamp according to claim 1 is characterized in that being provided with in the circuit the photosensitive light measuring circuit of electronics, and the output of the photosensitive light measuring circuit of electronics links to each other with warning circuit, and its light-sensitive device (4) is installed on the lamp body.
4, according to claim 1 or 3 described a kind of ultrasonic wave myopia prevention right sitting position desk lamps, it is characterized in that being provided with in the circuit the photosensitive light measuring circuit of electronics, the output of the photosensitive light measuring circuit of electronics is connected with the respective input of system, control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200792308U CN2847005Y (en) | 2005-08-12 | 2005-08-12 | Ultrasonic anti-shortsightedness sitting gesture correction desk lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200792308U CN2847005Y (en) | 2005-08-12 | 2005-08-12 | Ultrasonic anti-shortsightedness sitting gesture correction desk lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2847005Y true CN2847005Y (en) | 2006-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200792308U Expired - Fee Related CN2847005Y (en) | 2005-08-12 | 2005-08-12 | Ultrasonic anti-shortsightedness sitting gesture correction desk lamp |
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| Country | Link |
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| CN (1) | CN2847005Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916073A (en) * | 2010-07-08 | 2010-12-15 | 邓发文 | Control circuit of multi-function learning control device and learning control method |
| US9374867B2 (en) | 2010-12-31 | 2016-06-21 | Koninklijkle Philips Electronics N.V. | Illumination apparatus and method |
-
2005
- 2005-08-12 CN CNU2005200792308U patent/CN2847005Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916073A (en) * | 2010-07-08 | 2010-12-15 | 邓发文 | Control circuit of multi-function learning control device and learning control method |
| CN101916073B (en) * | 2010-07-08 | 2014-10-08 | 梁燕芬 | Control circuit of multi-function learning control device and learning control method |
| US9374867B2 (en) | 2010-12-31 | 2016-06-21 | Koninklijkle Philips Electronics N.V. | Illumination apparatus and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |