CN101098390A - TV set having sight protection function - Google Patents

Abstract

A television with vision protection function comprises a ranging sensor and a general motor, wherein a single chip in the general motor via the ranging sensor obtains the distance between eyes and television screen, and prompt people to increase the distance when the distance is over general value, to protect vision. The inventive television can automatically prompt people especially minors to protect vision, which can resolve the high-rate near sight problem that reaches 34% in minors, with simple and practical characters.

Description

Television set with eyesight protection function

Technical field

The present invention relates to the existing-quality television machine.

Background technology

There is at present extensively " TV myopia " difficult problem that makes among the minor that the head of a family has a headache up to 34%.Market in urgent need uses the television set that simply has eyesight protection function flexibly to solve this problem.

Existing television set is the existing-quality television machine, does not have eyesight protection function.

Summary of the invention

In view of above-mentioned, the invention provides a kind of easy, practical television set with eyesight protection function.

Have the television set of eyesight protection function, it is characterized in that: comprise

Distance measuring sensor: be used to measure the distance of people's eye from television screen;

Existing-quality television machine: be connected to above-mentioned distance measuring sensor; be used for obtaining the distance of people's eye by distance measuring sensor from television screen by single-chip microcomputer in the existing-quality television machine; when this distance surpass conventional apart from the time just give a warning; the people who sees TV with prompting keeps at a distance, and reaches the purpose of vision protection.

Described distance measuring sensor can be the transducer that ultrasonic sensor, infrared ray sensor or other can measuring distances.

The present invention has following substantive distinguishing features and advantage:

Television set with eyesight protection function provided by the invention; can remind the people that sees TV automatically, want vision protection when especially the minor sees TV; solved " TV myopia " difficult problem ubiquitous among the present minor,, had simple, practical characteristics up to 34%.

Description of drawings

Fig. 1 is the dynamo-electric theory diagram of TV that the present invention has eyesight protection function.

Fig. 2 is the circuit diagram that the present invention has the typical specific embodiment of television set of eyesight protection function.

Embodiment

Consult Fig. 1, the present invention has the television set of eyesight protection function and is made up of distance measuring sensor 1, existing-quality television machine 2.

Various functional circuit module described in Fig. 1 all belong to general and mature technique, and all can adopt multiple scheme to realize.Though the scheme that realizes can be ever-changing, its basic principle is the same:

Existing-quality television machine 2 is connected with distance measuring sensor 1 by its single-chip microcomputer mouth line; obtain the distance of people's eye by distance measuring sensor from television screen; when this distance surpass conventional apart from the time just give a warning, see that with prompting the people of TV keeps at a distance, reach the purpose of vision protection.

Fig. 2 is a kind of typical examples of implementation.In this example, distance measuring sensor is that X1 adopts ultrasonic sensor; The existing-quality television machine is done representative by the single-chip microcomputer U1 in it (adopting ST6371).Structure and principle that it is detailed are as follows:

Single-chip microcomputer U1 sends the ultrasonic wave drive signal by its mouthful line DRV on the one hand as central processing unit, so that ultrasonic sensor X1 sends ultrasonic wave, starts timing simultaneously; The ultrasonic wave that is sent will be returned ultrasonic reflections when running into people's head, received by ultrasonic sensor, and through after amplifier U1 (NE5532) amplification, detected by the mouth line REV of single-chip microcomputer U1, just represented people's head (eye) distance from screen between institute's timing this moment.Single-chip microcomputer is through after relatively, and if this distance is just sent prompting (as passing through indicator light or screen prompt) greater than conventional distance.

Claims (3)

1, has the television set of eyesight protection function, it is characterized in that: comprise

Distance measuring sensor: be used to measure the distance of people's eye from television screen;

Existing-quality television machine: be connected to above-mentioned distance measuring sensor; be used for obtaining the distance of people's eye by distance measuring sensor from television screen by single-chip microcomputer in the existing-quality television machine; when this distance surpass conventional apart from the time just give a warning; the people who sees TV with prompting keeps at a distance, and reaches the purpose of vision protection.

2, according to claim 1 described television set with eyesight protection function, it is characterized in that: this distance measuring sensor is a ultrasonic sensor.

3, according to claim 1 described television set with eyesight protection function, it is characterized in that: this distance measuring sensor is an infrared ray sensor.

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