CN205486694U - Electron device of TV is closely watched in prevention - Google Patents
Electron device of TV is closely watched in prevention Download PDFInfo
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- CN205486694U CN205486694U CN201620192803.6U CN201620192803U CN205486694U CN 205486694 U CN205486694 U CN 205486694U CN 201620192803 U CN201620192803 U CN 201620192803U CN 205486694 U CN205486694 U CN 205486694U
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- module
- control module
- ranging circuit
- sensor
- ultrasonic ranging
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Abstract
The utility model provides an electron device of TV is closely watched in prevention, characterized by selects module (1) and control module (2) including ultrasonic ranging circuit, voice module (6), display module (5), function, ultrasonic ranging circuit, voice module (6), display module (5), function select module (1) to be connected with control module (2) respectively, ought the measured value of ultrasonic ranging circuit when exceeding the function and selecting the setting value of module (1), control module (2) electric drive voice module (6) and display module (5).
Description
Technical field
Patent of the present invention relates to a kind of electronic installation, is specifically related to a kind of electronic installation preventing close-range TV view.
Background technology
Present adolescent myopia phenomenon is increasingly severe, even first grade of primary school just has and much to wear glasses, 80% all directs the spearhead at TV above with respect to the investigation report that pupil is near-sighted, sees that TV distance is the most closely one of them critically important reason, is the arch-criminal of pupil's myopia；But the most also there is no any a electronic product preventing from closely seeing the function of TV, so we have developed the close device seeing TV of a prevention, prevent child from closely seeing TV, reduce the TV injury to children's vision.
Summary of the invention
Patent of the present invention is contemplated to solve the problem that child closely sees TV, by making an electronic installation, this device can be fixed on any position near television set, there is ultrasonic ranging circuit in device front, can measure distance S of the person that sees TV and this device, the distance of the person that is equal to see TV and television set, the built-in predeterminable range of device, by the size of relatively actual distance S measured with predeterminable range, make respective handling, remind child to be maintained at appropriately distance viewing TV.
In order to solve the problems referred to above, the preferred version of the present invention is a kind of electronic installation preventing close-range TV view, including ultrasonic ranging circuit, voice module (6), display module (5), function selecting module (1) and control module (2)；Described ultrasonic ranging circuit, voice module (6), display module (5), function selecting module (1) are connected with control module (2) respectively, when the measured value of described ultrasonic ranging circuit exceedes the setting value of function selecting module (1), described control module (2) electric drive voice module (6) and display module (5).
Described ultrasonic ranging circuit comprises ultrasonic emitting module (3) and ultrasound wave receiver module (4).
Described ultrasonic emitting module (3) is by controlling analog switch chip U1 by control module (2), drives ultrasonic sensor (8) to launch ultrasound wave through intermediate-frequency transformer (9).
Described intermediate-frequency transformer (9) includes intermediate-frequency transformer T1 and intermediate-frequency transformer T4.
Described ultrasound wave receiver module (4) is by the ultrasonic activation sensor (8) being reflected back, and produces the signal of telecommunication, passes to control module (2) as interrupt signal after operational amplifier U3 processing and amplifying.
The sensor (8) of described ultrasonic ranging circuit includes sensor L and sensor R.The covering Radix Rumicis of sensor (8) is about 60 °, sensor L reaches more than 120 ° plus sensor R, substantially can detect whether television set front has child to enter fence coverage completely, owing to using two sensors (8), so will not work at synchronization in order to ensure sensor L and sensor R, cause result of detection inaccurate, add four and select an analog switch chip U1, i.e. synchronization, sensor L and sensor R only one of which are in work.
A kind of optimal way according to a kind of electronic installation preventing close-range TV view of the present invention, described control module (2) is CPU processor, and its writing function selects the data of module (1) and drives ultrasonic ranging circuit, voice module (6), display module (5).
According to a kind of optimal way of a kind of electronic installation preventing close-range TV view of the present invention, described display module (5) is to be made up of data storage register U7, LED (7) and charactron U6；Control module (2) drives charactron U6 to show distance S of the person that sees TV and television set in real time by data storage register U7, and constantly refreshes and distance S of ultrasonic ranging circuit measuring and the result of predeterminable range contrast showed with the form of LED (7).
Described LED (7) includes yellow LED lamp D2, green LED lamp D4 and red LED lamp D6.
A kind of optimal way according to a kind of electronic installation preventing close-range TV view of the present invention, described function selecting module (1) is to select predeterminable range value, numerical value after selection can be stored in storage chip U4, and compares with control module (2).
A kind of optimal way according to a kind of electronic installation preventing close-range TV view of the present invention, described voice module (6) includes speech chip U5, loudspeaker LS1, when distance S of ultrasonic ranging circuit measuring less than predeterminable range and reaches certain time, and control module (2) drives loudspeaker LS1 to play and is set in advance in the recording inside speech chip U5.
The circuit that the ultrasonic ranging circuit of patent of the present invention uses transmitting-receiving integrated ultrasonic piezoelectric transducer (8) to form realizes, control module (2) launches the pulse of 40KHz, start timer internal simultaneously, sensor (8) is driven to launch ultrasound wave by intermediate-frequency transformer (9), it is then shut off launching pulse, sensor (8) receives the ultrasound wave reflected, time difference T launched by calculating and receive judges distance S=C*T/2 of reflectance ultrasound ripple object, wherein C is the speed of ultrasound wave, about 340 meter per seconds.Owing to seeing the distance typically not more than 17 meters of TV, so T was less than 0.1 second, a ultrasound wave can be launched at interval of 0.5 second and test.
A kind of electronic installation preventing close-range TV view of the present invention provides the benefit that: include hardware components and software section, and hardware components includes ultrasonic emitting module (3), ultrasound wave receiver module (4), voice module (6), display module (5), function selecting module (1) and control module (2)；Software section realizes controlling the transmitting of ultrasound wave and receives, it is transmitted into the time difference of reception by record, calculates distance, and do corresponding process according to distance S measured, including LED (7) and charactron U6 display distance S and voice reminder, prevent from closely seeing that TV injures eyes.
Accompanying drawing explanation
Fig. 1 is module contact figure.
Fig. 2 is functional schematic.
Fig. 3 is circuit theory diagrams.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention explains in detail, and this example only does explanation and is not used in the restriction present invention.
This example circuit schematic diagram is as shown in Figure 3, power input J7 selects predeterminable range gear by function selecting module (1) after switching on power, data are stored in storage chip U4, being driven ultrasonic sensor L and sensor R to launch ultrasound wave by control module (2) again, control module (2) starts to start timer internal and starts timing simultaneously.The ultrasound wave launched forms echo after encountering barrier and acts on ultrasonic sensor (8), and the signal of formation sends interruption application to control module (2) after operational amplifier U3 operation amplifier；After receiving the signal interrupting applying for, make an immediate response interruption, performs external interrupt service routine, stops timing, obtains the time T that ultrasound wave sends and returns.If the ultrasound wave launched does not runs into barrier in finding range, until control centre's Interruption produces, perform Interruption service routine, select next road ultrasonic sensor, continue to launch and receive ultrasound wave, same execution timer internal timing program noted earlier.
The distance value that function selecting module (1) can select has three options, is 1.2 meters respectively, 1.5 meters, 1.8 meters.
Ultrasonic sensor (8) running voltage of this electronic installation is 40KHz, the alternating current of 140VPP, but owing to input voltage is inadequate, therefore, amplifying circuit uses intermediate-frequency transformer T1 and intermediate-frequency transformer T4 to amplify, and reaches sensor L and the running voltage of sensor R.
For expanding investigative range, this example employs two sensors (8), and uses analog switch chip U1 to make sensor L and sensor R alternation.Its principle is, the control module (2) of device calculates time difference T launched and receive and judges distance S=C*T/2 of reflectance ultrasound ripple object, wherein C is the speed of ultrasound wave, about 340 meter per seconds, when T value is 0.0070s, then barrier and device distance 1.2 meters, when T value is 0.0088s, then barrier and device distance 1.5 meters, when T value is 0.0106s, then barrier and device distance 1.8 meters.Assume that preset value is 1.2 meters, when T value is less than or equal to 0.0070s, it is determined that distance S of the person that sees TV and television set is less than predeterminable range, when T value is more than 0.0070s, it is determined that the person that sees TV is at suitably distance viewing TV.When preset value is 1.5 meters, when T value is less than or equal to 0.0088s, it is determined that distance S of the person that sees TV and television set is less than predeterminable range, when T value is more than 0.0088s, it is determined that the person that sees TV is at suitably distance viewing TV；When preset value is 1.8 meters, when T value is less than or equal to 0.0106s, it is determined that distance S of the person that sees TV and television set is less than predeterminable range, when T value is more than 0.0106s, it is determined that the person that sees TV is at suitably distance viewing TV.
The display module (5) of this device is made up of the LED charactron U6 of data storage register U7, LED (7) and two, distance S of the person that sees TV that control module (2) drives charactron U6 to show in real time through control module by data storage register U7 to calculate and device, unit is rice, and data are accurate to one decimal place.3 LED (7), including red LED lamp D6, yellow LED lamp D2 and green LED lamp D4, when distance S of the person that sees TV with television set is more than predeterminable range, green LED lamp D4 is bright, represents this distance safety；When distance S of the person that sees TV with television set is less than predeterminable range, LED switches to yellow LED lamp D2 to represent, and the prompting person that sees TV is away from TV, start the timer internal of control module (2) simultaneously, when intervalometer reaches 60 seconds, when distance S of the person that sees TV with television set still switches to red LED lamp D6 less than predeterminable range then LED.
When LED be yellow or red time, the person that sees TV leaves fence coverage then LED and can automatically switch to green.
The voice module (6) of this device is made up of speech chip U5, loudspeaker LS1, and when distance S of ultrasonic ranging circuit measuring is less than predeterminable range and reaches 60 seconds, control module (2) drives loudspeaker LS1 to play and is set in advance in the recording inside speech chip U5.When speech play, the person that sees TV is away from television set, until more than predeterminable range, then speech play can be automatically stopped.
Claims (3)
1. prevent an electronic installation for close-range TV view, it is characterized in that, including ultrasonic ranging circuit, voice module (6), display module (5), function selecting module (1) and control module (2)；Described ultrasonic ranging circuit, voice module (6), display module (5), function selecting module (1) are connected with control module (2) respectively, when the measured value of described ultrasonic ranging circuit exceedes the setting value of function selecting module (1), described control module (2) electric drive voice module (6) and display module (5)；
Described ultrasonic ranging circuit includes ultrasonic emitting module (3) and ultrasound wave receiver module (4)；
Described ultrasonic emitting module (3) is by controlling analog switch chip U1 by control module (2), drives ultrasonic sensor (8) to launch ultrasound wave through intermediate-frequency transformer (9)；
Described ultrasound wave receiver module (4) is by the ultrasonic activation sensor (8) being reflected back, and produces the signal of telecommunication, passes to control module (2) as interrupt signal after operational amplifier U3 processing and amplifying.
A kind of electronic installation preventing close-range TV view the most according to claim 1, is characterized in that, the sensor (8) of described ultrasonic ranging circuit can have more than one, drives sensor (8) by analog switch chip U1 order.
A kind of electronic installation preventing close-range TV view, it is characterized in that, control module (2) is CPU processor, and its writing function selects the data of module (1) and drives ultrasonic ranging circuit, voice module (6), display module (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620192803.6U CN205486694U (en) | 2016-03-14 | 2016-03-14 | Electron device of TV is closely watched in prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620192803.6U CN205486694U (en) | 2016-03-14 | 2016-03-14 | Electron device of TV is closely watched in prevention |
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| Publication Number | Publication Date |
|---|---|
| CN205486694U true CN205486694U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620192803.6U Expired - Fee Related CN205486694U (en) | 2016-03-14 | 2016-03-14 | Electron device of TV is closely watched in prevention |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761453A (en) * | 2016-03-14 | 2016-07-13 | 汕头市奥斯卡网络科技有限公司 | Electronic device avoiding watching television at close range |
-
2016
- 2016-03-14 CN CN201620192803.6U patent/CN205486694U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761453A (en) * | 2016-03-14 | 2016-07-13 | 汕头市奥斯卡网络科技有限公司 | Electronic device avoiding watching television at close range |
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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 |
Granted publication date: 20160817 Termination date: 20170314 |
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| CF01 | Termination of patent right due to non-payment of annual fee |