CN205920584U - Myopia alarm - Google Patents
Myopia alarm Download PDFInfo
- Publication number
- CN205920584U CN205920584U CN201620696731.9U CN201620696731U CN205920584U CN 205920584 U CN205920584 U CN 205920584U CN 201620696731 U CN201620696731 U CN 201620696731U CN 205920584 U CN205920584 U CN 205920584U
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- mc4069ube
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- 208000001491 myopia Diseases 0.000 title claims abstract description 15
- 230000004379 myopia Effects 0.000 title claims abstract description 13
- 238000002604 ultrasonography Methods 0.000 claims description 15
- 239000000523 sample Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000004438 eyesight Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
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Abstract
The utility model relates to a myopia alarm belongs to electron product technology field. The utility model discloses a measurement circuit, timing circuit, warning circuit, power supply circuit, wherein measurement circuit is located the alarm front end, and power supply circuit and measurement circuit are connected, measurement circuit again with the timing circuit connection, the timing circuit again with warning circuit connection. The utility model discloses utilize ultrasonic ranging, ranging result is accurate, and small, light in weight, portable, convenient to use, simple structure are reasonable, with low costs moreover is applicable to everyone and uses.
Description
Technical field
This utility model is related to a kind of myopia alarm, belongs to technical field of electronic products.
Background technology
In daily life, people often because closely operation, abnormal sitting posture really etc. a series of situations cause vision
Decline.Particularly the popularization of computer and mobile phone uses in recent years, and people are too high for the degree of dependence of computer and mobile phone, all day
Closely the myopic probability of people is made to increase against computer and mobile phone.Therefore, pre- myopia prevention becomes particularly important.At present, very
Many human factor errors think that the talent of only myopia needs to prevent myopia correction, and expert teaches that everyone is required for prevention closely in fact
Depending on protecting vision.Therefore, design a kind of small volume, lightweight, be easy to carry, easy to use, be applied to everyone (blind person
Except) the near-sighted alarm that uses is very necessary to everyone sight protectio.
Content of the invention
This utility model provides a kind of myopia alarm, crosses warning during adosculation for realizing user with object
Problem.
The technical solution of the utility model is: a kind of myopia alarm, including range-measuring circuit 1, timing circuit 2, electricity of reporting to the police
Road 3, power circuit 4；Wherein range-measuring circuit 1 is located at alarm front end, and power circuit 4 is connected with range-measuring circuit 1, range-measuring circuit 1
It is connected with timing circuit 2, timing circuit 2 is connected with warning circuit 3 more again.
Described range-measuring circuit 1 is by resistance r1, r3, r4, slide resistor r2, crystal oscillator xt1, mc4069ube chip, electric capacity
C1, c2, operational amplifier u1, u2, u3, u4, u5, u6, ultrasound probe ls1, ls2 form；
Timing circuit 2 is by resistance r5, r6, r7, r8, r9, slide rheostat r10, diode d1,4060 chip ic1, electric capacity
C3, c4 form；
Warning circuit 3 is made up of audion q1 and buzzer ls3；
Power circuit 4 is main to be made up of a switch s1 and Battery pack bt, and switch s1 connects, then range-measuring circuit 1 is started working；
Switch s1 connects set of cells bt positive pole, set of cells bt minus earth, and the switch s1 other end connects mc4069ube chip
Port high level vdd and led；Port cs and csn of mc4069ube chip connects ultrasound probe ls1 and is used for launching sound wave；
Port in and xt1 of mc4069ube chip connects ultrasound probe ls2 and is used for receiving sound wave；The port of mc4069ube chip
Xt1 connects by operational amplifier u4, u5, u6, the 455kc piezoelectric ceramic filter of resistance r4 and electric capacity c1, c2 composition；Ultrasound wave
The computing circuit that probe ls2 connection is made up of resistance r1, r2 and amplifier u1；The port in of mc4069ube chip connects amplification
Device u2, u3；Low level gnd of mc4069ube chip connects resistance r3 and is grounded；Port bp and bpn of mc4069ube chip is even
Connect timing circuit 2, drive timing circuit 2 to work；(its work process is: circuit ON during power circuit 4 switch s1 closure；Open
Close high level vdd and led that s1 connects mc4069ube chip, the bright prompting of the led of mc4069ube chip is started working；Thus
Range-measuring circuit 1 starts to find range, and that is, mc4069ube chip is used for controlling whole process, not only controls the ultrasound probe of diastimeter
Ls1 launches sound wave, and controls the ultrasound probe ls2 of diastimeter to receive sound wave, for preventing reception process wrong, the electricity of centre
Resistance, electric capacity and operational amplifier are used for guaranteeing the accuracy of signal.455kc piezoelectric ceramic filter is the pressure using piezoelectric ceramics
The band filter that electrical effect and resonance characteristic are made, 455kc piezoelectric ceramic filter can convert electrical energy into supersonic vibration,
It is used for finding range.)；
The two ends of buzzer ls3 connect the emitter stage of the port bpn and audion q1 of mc4069ube chip, three poles respectively
The colelctor electrode of pipe q1 connects the port bp of mc4069ube chip；The port l1 of 4060 chip ic1 connects resistance r8, port l3 according to
Secondary connection resistance r9, r10, port l4 connects electric capacity c4, and slide rheostat r10 arranges time delay, the voltage of setting port l3；
The port l6 of 4060 chip ic1 connects buzzer ls3, and port l7 is sequentially connected diode d1, resistance r7, for control signal
Forward and reverse input；The port l2 of 4060 chip ic1 is used for controlling reset, and port l2 connects electric capacity c3, and port l5 connects resistance r6；
The port l8 ground connection of 4060 chip ic1.(its work process is: ic1 is 14 digit counters/frequency divider and agitator, Neng Gou
Work in wider frequency range.When range-measuring circuit 1 found range timing circuit 2 start working when, r6, c3 produce positive pulse will
Counter resets, counting starts.Slide rheostat r10 arranges time delay, and when counting reaches 14,3 feet will present
High potential, warning circuit 3 works, and ls3 drives buzzer sounding.).
Use process of the present utility model is:
Battery is put into, on and off switch is connected, to the energising of near-sighted alarm, range-measuring circuit 1 is started working in power circuit 4；
The principle of ultrasonic ranging is to be using the aerial spread speed of ultrasound wave it is known that measurement sound wave runs into obstacle after transmitting
The time that thing reflects, launch point is calculated to the actual range of barrier according to the time difference of transmitting and reception, works as human body
During with object distance less than or equal to arranges value, (such as 30cm, sees the posture keeping during object rectifying, and eye should be protected with object minimum distance
Hold 30cm) when, timing circuit 2 starts working；Timing time (human body is less than the 30cm persistent period with object distance) reaches
During 1min, the inner buzzer of warning circuit 3 sends chimes of doom.When human body is more than 30cm with object distance, interrupt timing circuit 2
Work, warning circuit 3 quits work simultaneously.
The beneficial effects of the utility model are: utilize ultrasonic ranging, range measurement accurately, and small volume, lightweight,
It is easy to carry, easy to use, simple and reasonable, low cost is applied to everyone (except blind person) and uses.
Brief description
Fig. 1 is structured flowchart of the present utility model；
Fig. 2 connects block diagram for this utility model circuit；
Fig. 3 is circuit theory diagrams of the present utility model；
The each label of in figure: 1- range-measuring circuit, 2- timing circuit, 3- warning circuit, 4- power circuit.
Specific embodiment
Embodiment 1: as Figure 1-3, a kind of myopia alarm, including range-measuring circuit 1, timing circuit 2, warning circuit 3,
Power circuit 4；Wherein range-measuring circuit 1 is located at alarm front end, and power circuit 4 is connected with range-measuring circuit 1, range-measuring circuit 1 again with
Timing circuit 2 connects, and timing circuit 2 is connected with warning circuit 3 again.
Described range-measuring circuit 1 is by resistance r1, r3, r4, slide resistor r2, crystal oscillator xt1, mc4069ube chip, electric capacity
C1, c2, operational amplifier u1, u2, u3, u4, u5, u6, ultrasound probe ls1, ls2 form；
Timing circuit 2 is by resistance r5, r6, r7, r8, r9, slide rheostat r10, diode d1,4060 chip ic1, electric capacity
C3, c4 form；
Warning circuit 3 is made up of audion q1 and buzzer ls3；
Power circuit 4 is main to be made up of a switch s1 and Battery pack bt, and switch s1 connects, then range-measuring circuit 1 is started working；
Switch s1 connects set of cells bt positive pole, set of cells bt minus earth, and the switch s1 other end connects mc4069ube chip
Port high level vdd and led；Port cs and csn of mc4069ube chip connects ultrasound probe ls1 and is used for launching sound wave；
Port in and xt1 of mc4069ube chip connects ultrasound probe ls2 and is used for receiving sound wave；The port of mc4069ube chip
Xt1 connects by operational amplifier u4, u5, u6, the 455kc piezoelectric ceramic filter of resistance r4 and electric capacity c1, c2 composition；Ultrasound wave
The computing circuit that probe ls2 connection is made up of resistance r1, r2 and amplifier u1；The port in of mc4069ube chip connects amplification
Device u2, u3；Low level gnd of mc4069ube chip connects resistance r3 and is grounded；Port bp and bpn of mc4069ube chip is even
Connect timing circuit 2, drive timing circuit 2 to work；
The two ends of buzzer ls3 connect the emitter stage of the port bpn and audion q1 of mc4069ube chip, three poles respectively
The colelctor electrode of pipe q1 connects the port bp of mc4069ube chip；The port l1 of 4060 chip ic1 connects resistance r8, port l3 according to
Secondary connection resistance r9, r10, port l4 connects electric capacity c4, and slide rheostat r10 arranges time delay, the voltage of setting port l3；
The port l6 of 4060 chip ic1 connects buzzer ls3, and port l7 is sequentially connected diode d1, resistance r7, for control signal
Forward and reverse input；The port l2 of 4060 chip ic1 is used for controlling reset, and port l2 connects electric capacity c3, and port l5 connects resistance r6；
The port l8 ground connection of 4060 chip ic1.
Embodiment 2: as Figure 1-3, a kind of myopia alarm, including range-measuring circuit 1, timing circuit 2, warning circuit 3,
Power circuit 4；Wherein range-measuring circuit 1 is located at alarm front end, and power circuit 4 is connected with range-measuring circuit 1, range-measuring circuit 1 again with
Timing circuit 2 connects, and timing circuit 2 is connected with warning circuit 3 again.
Above in conjunction with accompanying drawing, specific embodiment of the present utility model is explained in detail, but this utility model is not
It is limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also be without departing from this practicality
On the premise of new objective, various changes can be made.
Claims (2)
1. a kind of myopia alarm it is characterised in that: include range-measuring circuit (1), timing circuit (2), warning circuit (3), power supply
Circuit (4)；Wherein range-measuring circuit (1) is located at alarm front end, and power circuit (4) is connected with range-measuring circuit (1), range-measuring circuit
(1) it is connected with timing circuit (2), timing circuit (2) is connected with warning circuit (3) more again.
2. according to claim 1 myopia alarm it is characterised in that:
Described range-measuring circuit (1) by resistance r1, r3, r4, slide resistor r2, crystal oscillator xt1, mc4069ube chip, electric capacity c1,
C2, operational amplifier u1, u2, u3, u4, u5, u6, ultrasound probe ls1, ls2 form；
Timing circuit (2) is by resistance r5, r6, r7, r8, r9, slide rheostat r10, diode d1,4060 chip ic1, electric capacity
C3, c4 form；
Warning circuit (3) is made up of audion q1 and buzzer ls3；
Power circuit (4) is main to be made up of a switch s1 and Battery pack bt, and switch s1 connects, then range-measuring circuit (1) is started working；
Switch s1 connects set of cells bt positive pole, set of cells bt minus earth, and the switch s1 other end connects the end of mc4069ube chip
Mouth high level vdd and led；Port cs and csn of mc4069ube chip connects ultrasound probe ls1 and is used for launching sound wave；
Port in and xt1 of mc4069ube chip connects ultrasound probe ls2 and is used for receiving sound wave；The port of mc4069ube chip
Xt1 connects by operational amplifier u4, u5, u6, the 455kc piezoelectric ceramic filter of resistance r4 and electric capacity c1, c2 composition；Ultrasound wave
The computing circuit that probe ls2 connection is made up of resistance r1, r2 and amplifier u1；The port in of mc4069ube chip connects amplification
Device u2, u3；Low level gnd of mc4069ube chip connects resistance r3 and is grounded；Port bp and bpn of mc4069ube chip is even
Connect timing circuit (2), drive timing circuit (2) work；
The two ends of buzzer ls3 connect the emitter stage of the port bpn and audion q1 of mc4069ube chip, audion q1 respectively
Colelctor electrode connect mc4069ube chip port bp；The port l1 of 4060 chip ic1 connects resistance r8, and port l3 connects successively
Connecting resistance r9, r10, port l4 connects electric capacity c4, and slide rheostat r10 arranges time delay, the voltage of setting port l3；4060
The port l6 of chip ic1 connects buzzer ls3, and port l7 is sequentially connected diode d1, resistance r7, positive and negative for control signal
To input；The port l2 of 4060 chip ic1 is used for controlling reset, and port l2 connects electric capacity c3, and port l5 connects resistance r6；4060
The port l8 ground connection of chip ic1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620696731.9U CN205920584U (en) | 2016-07-05 | 2016-07-05 | Myopia alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620696731.9U CN205920584U (en) | 2016-07-05 | 2016-07-05 | Myopia alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205920584U true CN205920584U (en) | 2017-02-01 |
Family
ID=57874552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620696731.9U Expired - Fee Related CN205920584U (en) | 2016-07-05 | 2016-07-05 | Myopia alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205920584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110782635A (en) * | 2019-10-26 | 2020-02-11 | 深圳市童心造物科技有限公司 | Eyesight protection system and using method thereof |
-
2016
- 2016-07-05 CN CN201620696731.9U patent/CN205920584U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110782635A (en) * | 2019-10-26 | 2020-02-11 | 深圳市童心造物科技有限公司 | Eyesight protection system and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 Termination date: 20180705 |