TW201610975A - Monitoring structure for an eye protecting monitor - Google Patents

Abstract

A monitoring structure for an eye protecting monitor comprises a single chip with adjustable timer feature, capable of embedding necessary hardware circuit and software determining control program in sequence; a warning circuit that warns the user with sound or warning light; a relay driving circuit that regulates computer monitor display; a reset switch used to backtrack monitor power. This invention is characterized in the use of infrared ray sensor to test the distance from an user. If the user is too close, warning sound will be initiated for reminding effect. If no improvement is made, the monitor power will be shut off as a warning.

Description

Eye protection screen monitoring structure

A screen monitoring structure, in particular an eye-protection screen monitoring structure, can monitor the distance of the user from the screen device at any time. If it is too close, there will be a warning sound. If it is not improved, the screen device will be disconnected as a warning function.

With the increasing popularity of modern home electronics, every family has a TV and computer. However, watching the screen for a long time and unconsciously approaching will cause excessive load on the eyes, resulting in blue radiation damage and a shallow increase in myopia. Although the screen has changed from a traditional CRT (Cathode Ray Tube) to a less-radiant LED screen in recent years, it is not good to be too close to the screen.

At present, the price of commercially available goggles and anti-radiation glasses is not only expensive but at best it can only be used as a buffer. The eyesight will increase after a long time, and radiation damage is inevitable. As the saying goes, prevention is better than treatment, why not use it directly. Modern technology to counter the civilized diseases caused by science and technology?

Therefore, there is a need to provide an eye protection screen monitoring structure to solve the problems of the prior art.

In view of this, the inventor of the invention has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the inventor has finally achieved a practical and practical creation.

The invention relates to an eye protection screen monitoring structure, which comprises: a single chip can be electrically connected with an infrared sensing circuit, a reset switch, a warning circuit and a relay driving circuit; the infrared sensing circuit can be electrically connected with the screen device, the screen The device is electrically connected to the reset switch and the relay drive circuit; the reset switch is used to return the power of the screen device. When the infrared sensor exceeds 30 seconds, the single chip maintains the output in a low state, thereby creating the screen. The device is powered off until the reset switch is pressed and the screen unit begins to return.

In the above, the infrared sensor is powered by a +12V DC power supply; a single chip, the warning circuit, the relay drive circuit is powered by a +5V DC power supply; and the screen device uses a 110V AC power supply.

In the above, the infrared sensing circuit is an active reflective infrared sensing circuit, including an infrared emitter and an infrared receiver.

More preferably, the infrared sensing circuit has different distances to determine the standard value according to different screen device sizes.

The advantages of the invention are:

First, the infrared sensing circuit is designed to detect the distance of the user from the screen device, and the distance or direction can be adjusted according to the size of the screen device. Generally, the larger the screen device, the farther the user needs the distance.

Second, the design of the single chip makes the system more flexible and simple, and can control the judgment of programs and software.

3. The design of the warning circuit is to warn the user to stay away from the screen device by means of sounds and warning lights. If the user is far away, stop the warning.

4. The relay drive circuit is used to cut off the screen device and cause the screen device to lose power. When the user has not been improved by the warning circuit for a long time, the relay will cause the screen device to switch the contact point, thereby causing the effect of turning off the screen device.

5. The reset switch is designed to return the computer screen to a normal state after the screen device is turned off by pressing the reset switch.

With regard to the techniques, means and functions of the present invention, a preferred embodiment is described in detail with reference to the drawings, and it is believed that the above objects, structures and features of the present invention can be obtained from an in-depth and specific understanding. .

10‧‧‧Screen device

11‧‧‧Infrared sensing circuit

111‧‧‧Infrared emitter

112‧‧‧Infrared receiver

12‧‧‧ single chip

13‧‧‧Warning circuit

14‧‧‧Relay drive circuit

20‧‧‧Reset switch

The first picture is the overall schematic of the creation

Figure 2 is a block diagram of the system of the creation

Figure 3 is a schematic diagram of the workflow of the system software of the creation.

Figure 4 is a schematic diagram of the active reflective infrared sensing circuit

Figure 5 is a schematic diagram of the single-chip timer of the creation

Figure 6 is a schematic diagram of the voltage change of the creation.

Figure 7 is a schematic diagram showing the voltage change of P0.2 after the reset switch of the creation is pressed.

The above and other objects, features and advantages of the present invention will become more <RTIgt; The figure discloses an eye protection screen monitoring structure, including: a single chip 12 and an infrared sensing circuit 11, a reset switch 20, and a warning circuit 1 3 and the relay driving circuit 14 is electrically connected; the infrared sensing circuit 11 can be electrically connected to the screen device 10, and the screen device 10 is electrically connected to the reset switch 20 and the relay driving circuit 14; the reset switch 20 is In order to return to the power of the screen device 10, when the infrared sensing user distance is more than 30 seconds, the single chip 12 maintains the output in a low state, thereby causing the screen device 10 to be powered off until the reset switch 20 is pressed. The screen device 10 begins to return.

As shown in Figures 1 and 2, the figure shows that the infrared emitter 111 located inside the infrared sensing circuit 11 senses the user's distance. When the user's face is too close to the screen device 10, the infrared rays are blocked by the face. Reflected back to the infrared receiver 112, the message is then transferred to the single wafer 12 at P3.7. After receiving the message, the single chip 12 makes a low state output of P0.0 to the warning circuit 13 for energization, and the warning circuit 13 emits an audible sound and a warning light to warn the user to stay away from the screen device 10. If the user is far away, the P0.0 output The alarm circuit 13 stops the warning; if the user does not receive the signal range away from the infrared receiver 112, the single chip 12 will start to calculate for 30 seconds. If the infrared receiver 112 continues to transmit signals to the single chip 12, the single chip 12 A low state output of P0.2 is made to the relay drive circuit 14, so that the relay drive circuit 14 activates the screen device 10 to switch the contacts to cause the screen device 10 to lose power supply; to restart the screen device 10, simply press the reset switch 20 Then, the infrared sensing circuit 11 restarts monitoring the user's use distance.

As shown in FIG. 3, the figure shows a working flow chart of the system software. First, the infrared sensing circuit 11 senses whether there is a signal. If the signal continues to be sensed, if there is a signal, the warning circuit 13 operates to emit a sound and a warning light. Remind the user to stay away from the screen device 10. At the same time, the single chip 12 starts to start the timer for 30 seconds. If the signal of the infrared sensing circuit 11 is interrupted within 30 seconds, the infrared sensing circuit 11 resumes detecting the user distance. After 30 seconds, the signal of the infrared sensing circuit 11 is still sensed, and the screen device 10 is powered off. If the reset switch 20 is pressed, the infrared sensing circuit 11 resumes detecting the user distance, if the reset switch is not pressed. 20, the screen device 10 remains powered off.

Referring to FIG. 4, the infrared sensing circuit 11 used in the present invention is an active reflective infrared sensing circuit, and is composed of an infrared emitter 111 and an infrared receiver 112. If the infrared receiver 112 does not detect the infrared light reflected by the object, the output is in a high state, and if the infrared light reflected by the object is detected, the output is in a low state. The infrared ray emitted from the infrared ray emitter 111 has a frequency of 38 kHz, and the infrared ray receiver 112 receives only the light source of this frequency with a band pass filter to avoid misjudgment by the influence of the background light source.

Referring to FIG. 5, the timer of the single chip 12 used in the present creation is the internal clock of the single chip 12, that is, the internal clock input from the XTAL1 and XTAL2 pins, because the oscillator frequency is fixed as a timer.

Please refer to Figures 6 and 7. When the timer in the single chip 12 reaches the set 30 seconds, the P0.2 of the single chip 12 will have a low output and the screen device 10 will be powered off, while the P0.2 is The low output will remain until the user presses the reset switch 20.

In view of the above description of the embodiments, the operation of the present invention, the use and the effect of the present creation can be fully understood, but the above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of implementation of the present invention cannot be limited thereto. And the simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the creation of the creation are within the scope of this creation.

10‧‧‧Screen device

11‧‧‧Infrared sensing circuit

111‧‧‧Infrared emitter

112‧‧‧Infrared receiver

12‧‧‧ single chip

13‧‧‧Warning circuit

14‧‧‧Relay drive circuit

20‧‧‧Reset switch

Claims (4)

An eye protection screen monitoring structure includes: a single chip electrically connected to an infrared sensing circuit, a reset switch, a warning circuit and a relay driving circuit; the infrared sensing circuit can be electrically connected to a screen device Sexually connected, the screen device is electrically connected to the reset switch and the relay drive circuit; the reset switch is used to return the power of the screen device, and when the infrared sensor senses that the user is too close, the single chip will The output is maintained in a low state, which causes the screen device to be powered down, and the screen device begins to return after the reset switch is pressed. The eye protection screen monitoring structure according to claim 1, wherein the infrared sensor is powered by a +12V DC power supply; the single chip, the warning circuit, the relay driving circuit is powered by a +5V DC power supply. The screen device uses 110V AC power. The eye protection screen monitoring structure according to claim 1, wherein the infrared sensing circuit is an active reflective infrared sensing circuit, comprising an infrared emitter and an infrared receiver. The eye protection screen monitoring structure according to claim 1 or 3, wherein the infrared sensing circuit has different distance measurement standard values according to different screen device sizes.