TWI450224B - Eyesight protection apparatus and method - Google Patents

Description

Vision protection device and method

The invention relates to a vision protection device and method.

Conventional monitors generally do not have the function of protecting the user's vision. Some monitors are equipped with protective screens and the like. However, the protective screens and the like can only play the role of auxiliary protection, and the key to protecting the user's vision is still relying on User's consciousness. One way to protect the user's vision is that the user cannot be too close to the monitor. However, the user himself is not always aware of whether the distance between himself and the monitor is too close.

In view of the above, it is necessary to provide a vision protection device and a vision protection method that can remind the user that it is too close to the monitor.

A vision protection device is mounted on a monitor, the vision protection device includes: a distance sensor for sensing a distance between the user and the monitor and correspondingly emitting a distance signal; a mode selection unit, The working mode for selecting the vision protection device, the operation mode includes an alert mode, an audible alarm mode, and a power control mode; an alarm device; a power supply; a processor, the processor storing a predetermined value, the processor is configured to receive the distance signal and compare the distance signal sent by the distance sensor with a predetermined value, where the distance signal sent by the sensor is less than At a predetermined value, the processor controls the alarm device to sound an alarm according to the selected operating mode, controls the power supply to stop supplying power to the monitor, or controls the monitor to display a warning to alert the user that the distance from the monitor is too close.

A vision protection method includes the following steps: a distance sensor senses a distance between a user and a monitor and sends a distance signal to the processor; selects an operation mode of the vision protection device; the processor determines the distance Whether the signal is less than a predetermined value; if the distance signal is less than the predetermined value, the alarm device sounds an alarm, the power supply stops supplying power to the monitor, or the monitor displays a warning to remind the user that it is too close to the monitor.

The vision protection device and method of the present invention senses the distance between the user and the monitor through the distance sensor and sends a distance signal to the processor, the mode selection unit selects the working mode of the vision protection device, and the processor Comparing the distance signal with the predetermined value and controlling the working state of the monitor according to the comparison result according to the selected working mode to remind the user that the distance from the monitor is too close.

100‧‧‧ Vision protection device

200‧‧‧ monitor

10‧‧‧ Distance sensor

22‧‧‧First switch

24‧‧‧second switch

30‧‧‧ Processor

41~43‧‧‧ button

50‧‧‧ alarm device

60‧‧‧Power supply

52‧‧‧ pulse generator

R‧‧‧resistance

Q‧‧‧Transistors

B‧‧‧ buzzer

VCC‧‧‧DC power supply

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front elevational view of a preferred embodiment of a vision protection device of the present invention.

2 is a side view of a preferred embodiment of the vision protection device of the present invention connected to a monitor. block diagram.

Figure 3 is a circuit diagram showing the connection of the alarm device to the processor of Figure 2.

4 is a flow chart of a preferred embodiment of the vision protection method of the present invention.

Referring to FIGS. 1 and 2, a preferred embodiment of the vision protection device 100 of the present invention is disposed on a monitor 200 to alert the user to protect the user's vision when the user of the computer is too close to the monitor 200. The vision protection device 100 includes a distance sensor 10, a first switch 22, a second switch 24, a processor 30, a mode selection unit, an alarm device 50, and a power supply 60. The mode selection unit includes three buttons 41 to 43. When the buttons 41 to 43 are pressed, the corresponding alarm mode is activated.

The processor 30 is connected to the distance sensor 10, the alarm device 50, the first switch 22, the monitor 200, and the buttons 41-43.

The first end of the first switch 22 is connected to the power supply 60, the second end is connected to the monitor 200, and the third end is connected to the processor 30. The first end of the second switch 24 is connected to the power supply 60, and the second end is connected to the processor 30, the distance sensor 10 and the alarm device 50.

The power supply 60 supplies power to the monitor 200 through the first switch 22. The user can manually control the first switch 22 such that the power supply 60 is connected or disconnected from the monitor 200.

The power supply 60 supplies power to the vision protection device 100 through the second switch 24. The user can manually control the second switch 24 such that the power supply 60 is connected or disconnected from the processor 30, the distance sensor 10, and the alarm device 50.

The distance sensor 10 is configured to sense a distance between the user and the monitor 200 and send a distance signal to the processor 30. In the embodiment, the distance sensor 10 is an infrared distance sensor.

The processor 30 stores a predetermined value and a warning word. The processor 30 compares the distance signal sent by the distance sensor 10 with the predetermined value.

The buttons 41 to 43 are used to determine an operation mode of the vision protection device 100, and the operation modes include an audible alarm mode, a power control mode, and an alert mode.

When the button 41 is pressed, the vision protection device 100 operates in an audible alarm mode, i.e., the processor 30 is in communication with the alarm device 50. At this time, if the distance signal is less than the predetermined value, the processor 30 controls the alarm device 50 to emit an alarm sound to prompt the user to be too close to the monitor 200.

When the button 42 is depressed, the vision protection device 100 operates in a power control mode, i.e., the processor 30 is in communication with the power supply 60. At this time, if the distance signal is less than the predetermined value, the processor 30 controls the first switch 22 to disconnect the power supply 60 and the monitor 200, that is, the monitor 200 is turned off to prompt the user to monitor the distance. The device 200 is too close.

When the button 43 is pressed, the vision protection device 100 operates in an alert mode, i.e., the processor 30 is in communication with the monitor 200. At this time, if the distance signal is less than the predetermined value, the processor 30 controls the monitor 200 to display the warning message to prompt the user to be too close to the monitor 200.

Referring to FIG. 3 together, the alarm device 50 includes a pulse generator 52, a resistor R, a transistor Q, and a buzzer B. One end of the pulse generator 52 is connected to the processor 30, and the other end is connected to the base of the transistor Q through the resistor R. The collector is connected to the DC power source VCC through the buzzer B, and the emitter is grounded.

When the distance signal is less than the predetermined value, the processor 30 controls the pulse generator 52 to emit a square wave signal having a certain frequency. When the square wave signal is high level, the transistor Q is turned on, and the buzzer B sounds; when the square wave signal is low level, the transistor Q is turned off, and the buzzer B does not sound. Thus, the buzzer B emits an alarm sound at the frequency of the square wave signal.

When the distance signal is greater than the predetermined value, the processor 30 controls the pulse generator 52 to be inoperative, and the buzzer B does not emit an alarm sound.

Referring to FIG. 4, a preferred embodiment of the vision protection method of the present invention includes the following steps.

Step S1: The first switch 22 and the second switch 24 are pressed, and the power supply 60 supplies power to the vision protection device 100 and the monitor 200.

Step S2: The distance sensor 10 senses the distance between the user and the monitor 200 and sends a distance signal to the processor 30.

Step S3: Determine the working mode of the vision protection device 100.

Step S4: The processor 30 determines whether the distance signal is less than a predetermined value, and if yes, proceeds to step S5, otherwise proceeds to step S2.

Step S5: A warning signal is issued to remind the user that the monitor 200 is too close. When the vision protection device 100 operates in the audible alarm mode, the buzzer B in the alarm device 50 emits an alarm sound; when the vision protection device 100 operates in the power control mode, the power supply 60 stops to the monitor 200 power supply; when the vision protection device 100 operates in the alert mode, the monitor 200 displays a warning.

The distance protection device 100 of the present invention senses the distance between the user and the monitor 200 through the distance sensor 10 and sends a distance signal to the processor 30. The processor 30 compares the distance signal with the predetermined value. The alarm device 50 emits an alarm sound, the power supply 60 stops supplying power to the monitor 200, or the monitor 200 displays a warning to remind the user that the distance from the monitor 200 is too close.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be covered by the following claims.

100‧‧‧ Vision protection device

200‧‧‧ monitor

10‧‧‧ Distance sensor

22‧‧‧First switch

24‧‧‧second switch

30‧‧‧ Processor

41~43‧‧‧ button

50‧‧‧ alarm device

60‧‧‧Power supply

Claims (6)

A vision protection device is mounted on a monitor, the vision protection device includes: a distance sensor for sensing a distance between the user and the monitor and correspondingly emitting a distance signal; a mode selection unit, And an operation mode for selecting the vision protection device, the operation mode includes an alert mode, an audible alarm mode, and a power control mode; an alarm device; a power supply; and a processor, wherein the processor stores a predetermined value, The processor is configured to receive the distance signal and compare the distance signal sent by the distance sensor with a predetermined value. When the distance signal sent by the distance sensor is less than a predetermined value, the processor controls the selected mode according to the selected working mode. The alarm device sounds an alarm, controls the power supply to stop powering the monitor, or controls the monitor to display a warning to alert the user that the distance from the monitor is too close. The visual protection device of claim 1, wherein the alarm device comprises a pulse generator, a resistor, a transistor and a buzzer, one end of the pulse generator is connected to the processor, and the other end is transmitted through The resistor is connected to the base of the transistor, and the collector of the transistor is connected to the DC power source through the buzzer, and the emitter is grounded. The visual protection device of claim 1, further comprising a switch, the first end of the switch being connected to the power supply, the second end being connected to the monitor, and the third end being connected to the processor, The power supply can be connected or disconnected from the monitor by controlling the third end of the switch. The visual protection device of claim 1, further comprising a switch, the first end of the switch being connected to the power supply, the second end and the processor, the distance sensor and the alarm device All are connected, the switch is used to connect or disconnect the power supply and the processor, the distance sensor and the alarm device. The vision protection device of claim 1, wherein the distance sensor is an infrared distance sensor. A method for protecting vision includes the following steps: a distance sensor senses a distance between a user and a monitor and sends a distance signal to the processor; and selects a working mode of the vision protection device through a mode selection unit, The working mode includes an alert mode, an audible alert mode, and a power control mode; the processor determines whether the distance signal is less than a predetermined value; if the distance signal is less than the predetermined value, the processor controls an alarm device to send according to the selected working mode Alarm sound, control a power supply to stop powering the monitor or control the monitor to display a warning to alert the user to the monitor too close.