CN209784861U

CN209784861U - circuit for reminding healthy use of computer display

Info

Publication number: CN209784861U
Application number: CN201920773652.7U
Authority: CN
Inventors: 杨敏斌
Original assignee: Lingshan Vocational And Technical School
Current assignee: Lingshan Vocational And Technical School
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2019-12-13
Anticipated expiration: 2029-05-27

Abstract

The utility model provides a computer display is healthy uses and reminds circuit, its circuit comprises timing circuit, distance detection circuitry, light detection circuitry and warning circuit, supplies power to each circuit by +5V power supply. When the circuit is matched with a computer display for use, a user of the display can be monitored, and when the display is used in an unhealthy way, such as too short viewing distance, too long continuous viewing time, too dark viewing environment and the like, the circuit can timely give out a sound alarm to remind the user to make corresponding changes, so that the purpose of healthily using the display is achieved, and the vision and the physical and mental health of the user of the display are protected from being damaged to a certain extent.

Description

Circuit for reminding healthy use of computer display

Technical Field

The utility model relates to the field of electronic technology, specifically a computer monitor is healthy to be used and is reminded circuit.

Background

Computer monitors, also commonly referred to as computer monitors or computer screens, are a display tool for displaying computer information on a screen and reflecting the computer information to human eyes, and therefore, the computer monitor is one of the essential important peripherals of computers. When people work or play games with a computer, people often forget to rest due to high concentration of spirit and unconsciousness caused by long-distance direct vision of the display, and if the people do so for a long time, the eyesight is damaged, lumbar vertebra strain is caused, and the health of heart and cerebral vessels is not facilitated. In order to protect the eyesight and physical and mental health of the user, the distance between the display and the eyes should be more than 40cm when the display is used, and the user should leave the seat to relax and return at intervals of 2 hours when the user watches the display for a long time. In addition, when the ambient light is insufficient, if the user continues to use the display in a dark environment, the eyes of the user are also damaged greatly.

Therefore, it is desirable to design a circuit for reminding the healthy use of a computer monitor, which can sound an alarm in time when the distance between the eyes of the user and the monitor is too close, or when the user continuously watches the monitor for too long time, or when the ambient light using the monitor is insufficient, so as to remind the user to make a corresponding change, thereby achieving the purpose of healthy use of the monitor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a computer display health uses warning circuit with as above the function. In order to achieve the purpose, the utility model adopts the following specific technical proposal:

A computer display health use reminding circuit comprises a timing circuit, a distance detection circuit, a light ray detection circuit and an alarm circuit, wherein a +5V power supply supplies power to each circuit.

In the timing circuit, a VCC pin of an infrared sensing module HC-SR501 is connected with a +5V power supply, a GND pin is grounded, and an OUT pin is connected with a pin 2 of an operational amplifier LM 358; one end of the adjustable resistor RP2 is connected with a +5V power supply, the other end of the adjustable resistor RP2 is grounded, and the adjusting end is connected with a pin 3 of the operational amplifier LM 358; the 8 pins of the operational amplifier LM358 are connected with a +5V power supply, the 4 pins are grounded, and the 1 pin is connected with the 12 pins of the frequency division counter CD 4060; a pin 16 of the frequency division counter CD4060 is connected with a +5V power supply, a pin 8 is grounded, a pin 9 is connected with one end of a capacitor C1, a pin 10 is connected with one end of a resistor R1, a pin 11 is connected with one end of a resistor R2 and the cathode of a diode D1, and a pin 3 is connected with the anode of the diode D1 and one end of a resistor R3; the other end of the resistor R1 is connected with one end and an adjusting end of the adjustable resistor RP3, and the other end of the adjustable resistor RP3 is connected with the other end of the capacitor C1 and the other end of the resistor R2; the other end of the resistor R3 is connected with the base of the triode Q1; the emitter of the triode Q1 is grounded, and the collector is connected with the alarm circuit.

in the distance detection circuit, a VCC pin of an infrared switch E18-D50NK is connected with a +5V power supply, a GND pin is grounded, and an OUT pin is connected with a 6 pin of an operational amplifier LM 358; one end of the adjustable resistor RP1 is connected with a +5V power supply, the other end of the adjustable resistor RP1 is grounded, and the adjusting end is connected with a pin 5 of the operational amplifier LM 358; the pin 7 of the operational amplifier LM358 is connected with one end of a resistor R4, and the other end of the resistor R4 is connected with the base electrode of a triode Q2; the emitter of the triode Q2 is grounded, and the collector is connected with the alarm circuit.

in the light detection circuit, one end and an adjusting end of an adjustable resistor RP4 are connected with a +5V power supply, the other end of an adjustable resistor RP4 is connected with a base electrode of a triode Q3 and one end of a photoresistor LDR, the other end of the photoresistor LDR is grounded, an emitting electrode of a triode Q3 is connected with a collector electrode of a triode Q4, an emitting electrode of a triode Q4 is grounded, a base electrode of a triode Q4 is connected with an OUT pin of an infrared induction module HC-SR501, and a collector electrode of a triode Q3 is connected with an alarm circuit.

In the alarm circuit, the collector of a triode Q1 of the timing circuit is connected with one end of a coil of a relay K1 and the anode of a diode D2, and the other end of the coil of the relay K1 and the cathode of a diode D2 are connected with a +5V power supply; the collector of the triode Q2 of the distance detection circuit and the collector of the triode Q3 of the light ray detection circuit are connected with one end of a coil of the relay K2 and the anode of the diode D3, and the other end of the coil of the relay K2 and the cathode of the diode D3 are connected with a +5V power supply; the +5V power supply is connected with one end of a normally open contact K1-1 of the relay K1, the other end of the normally open contact K1-1 of the relay K1 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with the anode of a light-emitting diode LED1, and the cathode of the light-emitting diode LED1 is grounded; the +5V power supply is connected with one end of a normally open contact K2-1 of the relay K2, the other end of the normally open contact K2-1 of the relay K2 is connected with one end of a resistor R6, the other end of the resistor R6 is connected with the anode of a light-emitting diode LED2, and the cathode of the light-emitting diode LED2 is grounded; the +5V power supply is connected with one end of a normally open contact K1-2 of the relay K1 and one end of a normally open contact K2-2 of the relay K2, the other end of the normally open contact K1-2 of the relay K1 and the other end of the normally open contact K2-2 of the relay K2 are jointly connected with the anode of the buzzer BZ, and the cathode of the buzzer BZ is grounded.

The infrared sensing module HC-SR501 is a human body infrared sensing module; the adjustable resistors RP2 and RP3 are respectively adjustable resistors of 100k omega and 430k omega; the resistors R1, R2 and R3 are respectively resistors of 360k omega, 2M omega and 1k omega; the capacitance C1 adopts a capacitance of 1 muF; the diode D1 adopts a 1N4148 diode; the transistor Q1 is an 8050 NPN transistor.

The infrared switch E18-D50NK is a diffuse reflection type infrared switch, and the detection distance is 10-50 cm and is adjustable; the adjustable resistor RP1 adopts an adjustable resistor of 100k omega; the resistor R4 adopts a resistor of 1k omega; the transistor Q2 is an 8050 NPN transistor.

The light dependent resistor LDR adopts a 5506 light dependent resistor; the adjustable resistor RP4 adopts an adjustable resistor of 150k omega; both the triodes Q3 and Q4 adopt 8050 NPN triodes.

The relays K1 and K2 both adopt relays G5LA-14-DC 5V; the diodes D2 and D3 are both 1N4148 diodes; the resistors R5 and R6 both adopt 1K omega of resistors; the light emitting diodes LED1 and LED2 are red and yellow LED indicator lamps respectively; the buzzer BZ is a 5V active buzzer.

The utility model discloses a computer display is healthy uses warning circuit by timing circuit, apart from detection circuitry, light detection circuitry and warning circuit constitute, use its cooperation computer display, can monitor the user of display, it is too near to have the viewing distance when it, watch the time overlength in succession, when watching the action that the environment was too dark etc. unhealthy use the display, this circuit can in time send the audible alarm, in order to remind the user to make corresponding change, reach the purpose of healthy use display from this, thereby protect display user's eyesight and physical and mental health not to harm to a certain extent.

Drawings

FIG. 1 is a circuit diagram of a health use reminding circuit of a computer monitor.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in figure 1, the computer display health use reminding circuit consists of a timing circuit, a distance detection circuit, a light ray detection circuit and an alarm circuit, and all the circuits are powered by a +5V power supply.

When the reminding circuit for the healthy use of the computer display is used, the reminding circuit can be packaged in a shell and fixedly installed in the middle of the upper edge of the computer display, a 5V power adapter is adopted for supplying power to the reminding circuit, the infrared sensing module HC-SR501, the probe of the infrared switch E18-D50NK, the light emitting diode LED1 and the LED2 respectively protrude outwards from the front of the shell to face a user of the display, and the probe of the light sensitive resistor LDR protrudes outwards from the upper side of the shell to face the external environment of the display.

The working principle of the health use reminding circuit of the computer display is as follows: when a user is not in front of the display, the OUT pin of the infrared sensing module HC-SR501 outputs a low level, the 1 pin of the operational amplifier LM358 outputs a high level and is loaded on the 12 pin of the frequency division counter CD4060, the 3 pin of the frequency division counter CD4060 maintains the output low level, the triode Q1 is cut off, the relay K1 is in a release state, and the alarm circuit does not work. When a user uses the display, the infrared sensing module HC-SR501 detects that a person exists, the OUT pin of the infrared sensing module HC-SR501 outputs a high level, the 1 pin of the operational amplifier LM358 is turned into a low level and is loaded onto the 12 pins of the frequency division counter CD4060, the frequency division counter CD4060 starts timing work, the resistance value of the adjustable resistor RP3 is adjusted, the timing duration is controlled to be about 2 hours, when the duration reaches 2 hours, the 3 pins of the CD4060 are turned over to output the high level, the triode Q1 is conducted, the relay K1 is attracted, the alarm circuit is powered on to work, the red light emitting diode LED1 is lightened, the buzzer BZ gives an alarm sound to remind the user that the display is used for 2 hours, the user needs to leave the seat to rest and then return, and when the user leaves the seat, the alarm circuit automatically stops.

the detection distance of the infrared switches E18-D50NK is adjusted to be about 40cm, in the process of using the display, when the distance between eyes of a user and the display is larger than 40cm, the OUT pins of the infrared switches E18-D50NK output high level, the 7 pin of the operational amplifier LM358 outputs low level, the triode Q2 is cut off, the relay K2 is in a release state, and the alarm circuit does not work. When the distance between the eyes of a user and the display is less than 40cm, the infrared switch E18-D50NK receives the blocking reflection of the user, the OUT pin outputs a low level, the 7 pin of the operational amplifier LM358 outputs a high level, the triode Q2 is conducted, the relay K2 is attracted, the alarm circuit is electrified to work, the yellow light-emitting diode LED2 is lightened, the buzzer BZ gives an alarm sound to remind the user, and when the posture of the user is adjusted to recover to a normal distance, the alarm circuit automatically stops working.

Adjusting the adjustable resistor RP4 to a proper resistance value, when the ambient light is sufficient, the resistance value of the photosensitive resistor LDR is very small, the level loaded to the base electrode of the triode Q3 is a low level, and the triode Q3 is cut off; when the ambient light is insufficient, the resistance value of the light-sensitive resistor LDR is sharply increased, the level loaded to the base of the triode Q3 is changed into a high level, the triode Q3 is conducted, at the moment, if a user uses the display, the infrared sensing module HC-SR501 detects that a person is present, the OUT pin outputs the high level and loads the high level to the base of the triode Q4, the triode Q4 is also conducted, the relay K2 is attracted, the alarm circuit is powered on to work, the yellow light-emitting diode LED2 is lightened, the buzzer BZ gives an alarm sound to remind the user, and when the user turns on the light to enable the ambient light to be normal, the alarm circuit automatically stops working.

When a user continuously watches the display for too long time, the circuit adopts the red light-emitting diode LED1 for indication, and when the distance between the eyes of the user and the display is too close or the ambient light using the display is insufficient, the circuit adopts the yellow light-emitting diode LED2 for indication, so that elements can be saved, and the user can distinguish and make corresponding changes quickly.

The above-mentioned drawings are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications or equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A computer display health uses and reminds circuit, characterized by: the circuit consists of a timing circuit, a distance detection circuit, a light ray detection circuit and an alarm circuit, and a +5V power supply supplies power to each circuit;

In the timing circuit, a VCC pin of an infrared sensing module HC-SR501 is connected with a +5V power supply, a GND pin is grounded, and an OUT pin is connected with a pin 2 of an operational amplifier LM 358; one end of the adjustable resistor RP2 is connected with a +5V power supply, the other end of the adjustable resistor RP2 is grounded, and the adjusting end is connected with a pin 3 of the operational amplifier LM 358; the 8 pins of the operational amplifier LM358 are connected with a +5V power supply, the 4 pins are grounded, and the 1 pin is connected with the 12 pins of the frequency division counter CD 4060; a pin 16 of the frequency division counter CD4060 is connected with a +5V power supply, a pin 8 is grounded, a pin 9 is connected with one end of a capacitor C1, a pin 10 is connected with one end of a resistor R1, a pin 11 is connected with one end of a resistor R2 and the cathode of a diode D1, and a pin 3 is connected with the anode of the diode D1 and one end of a resistor R3; the other end of the resistor R1 is connected with one end and an adjusting end of the adjustable resistor RP3, and the other end of the adjustable resistor RP3 is connected with the other end of the capacitor C1 and the other end of the resistor R2; the other end of the resistor R3 is connected with the base of the triode Q1; the emitting electrode of the triode Q1 is grounded, and the collecting electrode is connected with the alarm circuit;

In the distance detection circuit, a VCC pin of an infrared switch E18-D50NK is connected with a +5V power supply, a GND pin is grounded, and an OUT pin is connected with a 6 pin of an operational amplifier LM 358; one end of the adjustable resistor RP1 is connected with a +5V power supply, the other end of the adjustable resistor RP1 is grounded, and the adjusting end is connected with a pin 5 of the operational amplifier LM 358; the pin 7 of the operational amplifier LM358 is connected with one end of a resistor R4, and the other end of the resistor R4 is connected with the base electrode of a triode Q2; the emitting electrode of the triode Q2 is grounded, and the collecting electrode is connected with the alarm circuit;

In the light detection circuit, one end and an adjusting end of an adjustable resistor RP4 are connected with a +5V power supply, the other end of an adjustable resistor RP4 is connected with a base electrode of a triode Q3 and one end of a photoresistor LDR, the other end of the photoresistor LDR is grounded, an emitting electrode of a triode Q3 is connected with a collector electrode of a triode Q4, an emitting electrode of a triode Q4 is grounded, a base electrode of a triode Q4 is connected with an OUT pin of an infrared induction module HC-SR501, and a collector electrode of a triode Q3 is connected with an alarm circuit;

2. The computer display health use reminding circuit of claim 1, which is characterized in that: the infrared sensing module HC-SR501 is a human body infrared sensing module; the adjustable resistors RP2 and RP3 are respectively adjustable resistors of 100k omega and 430k omega; the resistors R1, R2 and R3 are respectively resistors of 360k omega, 2M omega and 1k omega; the capacitance C1 adopts a capacitance of 1 muF; the diode D1 adopts a 1N4148 diode; the triode Q1 adopts an 8050 NPN type triode;

The infrared switch E18-D50NK is a diffuse reflection type infrared switch, and the detection distance is 10-50 cm and is adjustable; the adjustable resistor RP1 adopts an adjustable resistor of 100k omega; the resistor R4 adopts a resistor of 1k omega; the triode Q2 adopts an 8050 NPN type triode;

The light dependent resistor LDR adopts a 5506 light dependent resistor; the adjustable resistor RP4 adopts an adjustable resistor of 150k omega; both the triodes Q3 and Q4 adopt 8050 NPN triodes;