CN207323445U

CN207323445U - Smart electronics visual chart

Info

Publication number: CN207323445U
Application number: CN201720118036.9U
Authority: CN
Inventors: 王晟彦; 涂春生
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-02-09
Filing date: 2017-02-09
Publication date: 2018-05-08
Anticipated expiration: 2027-02-09

Abstract

The utility model provides a kind of smart electronics visual chart, it includes microprocessor, the liquid crystal display for showing electronic visual chart, the clock chip for showing the time, the ultrasonic sensor for testing personnel to be measured and the liquid crystal display distance, power supply and key circuit；The microprocessor is connected with liquid crystal display, clock chip, ultrasonic sensor, power supply, key circuit respectively.Compared with prior art, the eyesight measured using the utility model is more accurate, and the utility model has the advantages that energy consumption is low, test result is intelligent.

Description

Smart electronics visual chart

Technical field

It the utility model is related to a kind of smart electronics visual chart.

Background technology

Have various papery visual charts and electronic visual chart on the market at present, they all there are many deficiencies part.Papery regards The detection of power table needs consuming a large amount of artificial, and due to being easy to remember it with regard to several fixed figures, people, loses detection meaning Justice, although electronic visual chart on the market can make up the shortcoming of some papery visual charts, because the resolution of liquid crystal display Rate limitation also is difficult to the eyesight value of accurately test tested personnel.

The content of the invention

In view of this, the utility model provides a kind of smart electronics visual chart.

The utility model is realized using following technical scheme：A kind of smart electronics visual chart, it includes microprocessor, is used for Show the liquid crystal display of electronic visual chart, the clock chip for showing the time, for testing personnel to be measured and the liquid crystal display distance Ultrasonic sensor, power supply and key circuit；The microprocessor respectively with liquid crystal display, clock chip, ultrasonic sensor, Power supply, key circuit connection.

Further, the power supply include transformer, rectifier bridge, three terminal regulator, polar capacitor C1, polar capacitor C2, Capacitance C3, capacitance C4, diode D5, resistance R1 and Light-emitting diode LED 1；The transformation primary connects alternating current, and secondary connects rectification Bridge；Rectifier bridge one terminates three terminal regulator first end, rectifier bridge other end ground connection；Three terminal regulator second end is grounded；Polarity electricity Hold C1 cathodes and connect three terminal regulator first end, polar capacitor C1 anode ground connection；Capacitance C3 is in parallel with property capacitance C1；Polar capacitor C2 Cathode connects the 3rd end of three terminal regulator, polar capacitor C2 anode ground connection；Capacitance C4 is in parallel with polar capacitor；Diode D5 anodes connect The 3rd end of three terminal regulator, diode D5 cathodes connect three terminal regulator second end；Resistance R1 mono- terminates the 3rd end of three terminal regulator, Other end sending and receiving optical diode anode, light emitting diode minus earth.

Further, the key circuit includes switch S1, resistance R4, resistance R2 and polar capacitor C3；The switch S1 One end and resistance R4 one end, the resistance R4 other ends connect power supply and polar capacitor C3 cathodes respectively；Polar capacitor C3 anode connect respectively Microprocessor, the switch S1 other ends, resistance R2 one end；The resistance R2 other ends are grounded.

Further, the microprocessor is single-chip minimum system.

Further, a brightness regulating circuit being connected with liquid crystal display is further included.

Further, the memory module being connected with the microprocessor is further included.

Further, the wireless communication module being connected with the microprocessor is further included.

The utility model uses microprocessor as core members, presses output test button, the random outlet opening of microprocessor For capitalization " E " digital data up and down, these data are shown in liquid crystal display, are tested personnel station immediately ahead of liquid crystal display Remotely, some distances can be moved forward when not seeing Chu, untill it can see the opening direction of capitalization " E " word, And use gesture and tell the opening direction of " E " word of test man, test man presses output test button liquid crystal display and shows new open again Mouth direction " E " word, when 3 times or more answers are all correct, test man presses output result button, when liquid crystal display shows the date Every minute and second and the eyesight value of tested personnel.Compared with prior art, the eyesight measured using the utility model is more accurate, and this reality Have the advantages that energy consumption is low, test result is intelligent with new.

Brief description of the drawings

Fig. 1 is the power circuit of the utility model.

Fig. 2 is the SCM system of the utility model.

Fig. 3 is the clock circuit schematic diagram of the utility model.

Fig. 4 is the liquid crystal display systems functional block diagram of the utility model.

Embodiment

Explanation is further explained to the utility model with specific embodiment below in conjunction with the accompanying drawings.

A kind of smart electronics visual chart, it includes microprocessor, the liquid crystal display for showing electronic visual chart, for showing The clock chip of time, the ultrasonic sensor for testing personnel to be measured and the liquid crystal display distance, power supply and key circuit；Institute Microprocessor is stated to be connected with liquid crystal display, clock chip, ultrasonic sensor, power supply, key circuit respectively.Ultrasonic sensor can To be arranged on liquid crystal display, or with the same vertical plane of liquid crystal display.Ultrasonic sensor can use TELESKY The common ultrasonic sensor on the market such as HC-SR04.

The utility model uses microprocessor as core members, presses output test button, the random outlet opening of microprocessor For capitalization " E " digital data up and down, these data are shown in liquid crystal display, are tested personnel station immediately ahead of liquid crystal display Remotely, some distances can be moved forward when not seeing Chu, untill it can see the opening direction of capitalization " E " word, And use gesture and tell the opening direction of " E " word of test man, test man presses output test button liquid crystal display and shows new open again Mouth direction " E " word, when 3 times or more answers are all correct, test man presses output result button, when liquid crystal display shows the date Every minute and second and the eyesight value of tested personnel.

Referring to Fig. 2, the power supply of the utility model includes transformer, rectifier bridge, three terminal regulator, polar capacitor C1, polarity Capacitance C2, capacitance C3, capacitance C4, diode D5, resistance R1 and Light-emitting diode LED 1；The transformation primary connects alternating current, secondary Connect rectifier bridge；Rectifier bridge one terminates three terminal regulator first end, rectifier bridge other end ground connection；Three terminal regulator second end is grounded； Polar capacitor C1 cathodes connect three terminal regulator first end, polar capacitor C1 anode ground connection；Capacitance C3 is in parallel with property capacitance C1；Polarity Capacitance C2 cathodes connect the 3rd end of three terminal regulator, polar capacitor C2 anode ground connection；Capacitance C4 is in parallel with polar capacitor；Diode D5 Anode connects the 3rd end of three terminal regulator, and diode D5 cathodes connect three terminal regulator second end；Resistance R1 mono- terminates three terminal regulator 3rd end, other end sending and receiving optical diode anode, light emitting diode minus earth.The alternating current of 220V can be turned by the power supply Change 5V direct currents into, by three terminal regulator, ensure that out-put supply is stablized.Light emitting diode is used to prompt power supply whether positive work Make.

Further, the key circuit includes switch S1, resistance R4, resistance R2 and polar capacitor C3；The switch S1 One end and resistance R4 one end, the resistance R4 other ends connect power supply and polar capacitor C3 cathodes respectively；Polar capacitor C3 anode connect respectively Microprocessor, the switch S1 other ends, resistance R2 one end；The resistance R2 other ends are grounded.Circuit diagram is referring to Fig. 2.

Further, the microprocessor is single-chip minimum system.Single-chip minimum system includes singlechip chip And it can meet the peripheral circuit of microcontroller basic function（Reset circuit, download mouth circuit, crystal oscillating circuit）.In Fig. 2, this practicality is new 51 microcontrollers that type uses.

Clock circuit referring to Fig. 3, the utility model using DS1302 clock chips, the chip be used for year, the moon, Day, week, when, minute, second carry out timing, and with the multiple functions such as leap year compensation.

Further, a brightness regulating circuit being connected with liquid crystal display is further included.Referring to Fig. 4, LCD screen uses LCD12864, brightness regulating circuit is using slide rheostat.

Further, the memory module being connected with the microprocessor is further included.For storing the eyesight number of personnel to be measured According to being convenient for historical data analysis.

Further, the wireless communication module being connected with the microprocessor is further included.Eyesight data can be uploaded to In background monitoring, for the cloud analysis to demographic data to be measured.

Above is the preferred embodiment of the utility model, all changes made according to technical solutions of the utility model are produced Function without departing from technical solutions of the utility model scope when, belong to the scope of protection of the utility model.

Claims

A kind of 1. smart electronics visual chart, it is characterised in that：Liquid crystal display including microprocessor, for showing electronic visual chart, For showing the clock chip of time, the ultrasonic sensor for testing personnel to be measured and the liquid crystal display distance, power supply and pressing Key circuit；The microprocessor is connected with liquid crystal display, clock chip, ultrasonic sensor, power supply, key circuit respectively.
2. smart electronics visual chart according to claim 1, it is characterised in that：The power supply include transformer, rectifier bridge, Three terminal regulator, polar capacitor C1, polar capacitor C2, capacitance C3, capacitance C4, diode D5, resistance R1 and light emitting diode LED1；The primary connects alternating current, and secondary connects rectifier bridge；Rectifier bridge one terminates three terminal regulator first end, and rectifier bridge is another One end is grounded；Three terminal regulator second end is grounded；Polar capacitor C1 cathodes connect three terminal regulator first end, polar capacitor C1 anode Ground connection；Capacitance C3 is in parallel with property capacitance C1；Polar capacitor C2 cathodes connect the 3rd end of three terminal regulator, and polar capacitor C2 anode connect Ground；Capacitance C4 is in parallel with polar capacitor；Diode D5 anodes connect the 3rd end of three terminal regulator, and diode D5 cathodes connect three-terminal voltage-stabilizing Device second end；Resistance R1 mono- terminates the 3rd end of three terminal regulator, other end sending and receiving optical diode anode, and light-emitting diodes tube cathode connects Ground.
3. smart electronics visual chart according to claim 1, it is characterised in that：The key circuit includes switch S1, electricity Hinder R4, resistance R2 and polar capacitor C3；Described switch S1 one end and resistance R4 one end, the resistance R4 other ends connect power supply and pole respectively Property capacitance C3 cathodes；Polar capacitor C3 anode connect microprocessor, the switch S1 other ends, resistance R2 one end respectively；Resistance R2 is another End ground connection.
4. smart electronics visual chart according to claim 1, it is characterised in that：The microprocessor is the minimum system of microcontroller System.
5. smart electronics visual chart according to claim 1, it is characterised in that：Further include the brightness being connected with liquid crystal display Adjustment circuit.
6. smart electronics visual chart according to claim 1, it is characterised in that：Further include what is be connected with the microprocessor Memory module.
7. smart electronics visual chart according to claim 1, it is characterised in that：Further include what is be connected with the microprocessor Wireless communication module.