CN213123372U - Learning device with electronic ink screen - Google Patents
Learning device with electronic ink screen Download PDFInfo
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- CN213123372U CN213123372U CN202021383945.3U CN202021383945U CN213123372U CN 213123372 U CN213123372 U CN 213123372U CN 202021383945 U CN202021383945 U CN 202021383945U CN 213123372 U CN213123372 U CN 213123372U
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Abstract
The utility model relates to a learning device with an electronic ink screen, which comprises a processing module, a display module, a power module, a voltage stabilizing circuit, a reset circuit and an indicator light circuit; the power supply module supplies power to each module through the voltage stabilizing circuit, and the display module of the utility model utilizes the electronic display screen to replace an OLED screen, so that the stroboscopic problem can be effectively avoided; can effectively relieve visual fatigue. And simultaneously environment light sensor Q4 and environment light sensor Q5 mainly replace traditional entity button to because environment light sensor sensitivity is high, can realize the gesture operation with two pieces of sensor combinations, promote user's use and experience.
Description
Technical Field
The utility model relates to a learning device field, more specifically relates to a learning device of electrified sub-ink screen.
Background
Paperless office workers make people rely on electronic products more, but display screens of the electronic products are mostly LCD and OLED at present, and the OLED screen can be selected preferentially by the display screen of the high-end electronic product. Although the OLED screen has many advantages such as high color contrast and flexibility, the OLED screen cannot avoid the problem of stroboflash by using PWM dimming, which causes a feeling of fatigue when a reader looks at the screen for a long time.
Chinese patent CN205751292U provides an electronic mathematics learning machine, has included learning machine organism, capacitive touch screen, built-in speaker, shift knob, data connector and wand, the utility model discloses a structural optimization design adopts the wand to discern the manuscript and turn into the electronic manuscript and save in the learning machine, carries out real-time independently study to can carry out the edition, the processing and the answer of electronic manuscript through external magnetic force keyboard cover, the structure is small and exquisite, is fit for the student and hand-carries. The utility model discloses a display screen that adopts is LED or OLED screen. The reader is easy to feel tired when watching the screen for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome above-mentioned prior art the OLED screen utilize PWM to adjust luminance, the defect of the stroboscopic problem of unable avoidance provides a learning device of electrified sub-china ink screen.
The device comprises a processing module, a display module, a power supply module and a voltage stabilizing circuit;
the display module includes: a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a diode D1, a diode D2, a diode D3, a display screen J2, a selection switch J1, a field effect transistor Q1, an inductor L1 and a power supply VDD 1;
the display screen J2 is an electronic ink screen;
the processing module comprises: the system comprises a processor U3, an ambient light sensor Q4, an ambient light sensor Q5, a capacitor C20, a resistor R14, a resistor R15, a capacitor C21, a capacitor C22, a bidirectional thyristor Y2, a clock chip U4 and a battery BT;
the power supply module is a 5V direct-current power supply VDD 1;
the voltage stabilizing circuit comprises: a voltage stabilizer U5, a capacitor C15, a capacitor C13 and an electrode capacitor C14;
one end of the capacitor C15 is grounded, and the other end of the capacitor C15 is respectively connected with the input end (pin 3) of the power supply VDD1 and the voltage regulator U5;
the output end (pin 2) of the voltage stabilizer U5 is respectively connected with the anode of the electrode capacitor C14 and one end of the capacitor C13;
the other end of the capacitor C13 is grounded; the negative pole of the electrode capacitance C14 is grounded;
the output end (pin 2) of the voltage stabilizer U5 outputs 3.3V direct current;
the VCC connection of the processor U3 is +3.3V, then the power supply VDD1 supplies +5V, the +5V needs to be converted into +3.3V to protect the ESP32 chip, and the excessively high voltage can cause burning of the ESP32 chip.
One end of the resistor R1 is grounded, and the other end of the resistor R1 is connected with the grid of the field effect transistor Q1;
one end of the resistor R2 is grounded, and the other end of the resistor R2 is connected with a pin 3 of the selection switch J1;
the source electrode of the field effect transistor Q1 is connected with the 2 pin of the selection switch J1;
a pin 1 of the selection switch J1 is connected with one end of a resistor R3, and the other end of the resistor R3 is grounded;
the drain electrode of the field effect transistor Q1 is respectively connected with one end of an inductor L1, one end of a capacitor C2 and the anode of a diode D3;
the other end of the inductor L1 is connected with a power supply VDD 1;
one end of the capacitor C1 is connected with a power supply VDD1, and the other end is grounded;
the other end of the capacitor C2 is respectively connected with the anode of the diode D1 and the cathode of the diode D2;
the cathode of the diode D1 is grounded;
the anode of the diode D2 is connected with the 23 pin of the display screen J2; the cathode of the diode D3 is connected with the 21 pin of the display J2;
one end of the resistor R4 is connected with a power supply VDD1, and the other end of the resistor R4 is respectively connected with an 8 pin of the display screen J2 and one end of the resistor R5; the other end of the resistor R5 is grounded;
one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is connected with the 4 pins of the display screen J2;
one end of the capacitor C4 is grounded, and the other end of the capacitor C4 is connected with a pin 5 of the display screen J2;
one end of the capacitor C5 is grounded, and the other end of the capacitor C5 is connected with the 15 pin of the display screen J2;
one end of the capacitor C6 is grounded, and the other end of the capacitor C6 is connected with the 18 pin of the display screen J2;
one end of the capacitor C7 is grounded, and the other end of the capacitor C7 is connected with a pin 19 of the display screen J2;
one end of the capacitor C8 is grounded, and the other end of the capacitor C8 is connected with the 20 pins of the display screen J2;
one end of the capacitor C9 is grounded, and the other end of the capacitor C9 is connected with a pin 21 of the display screen J2;
one end of the capacitor C10 is grounded, and the other end of the capacitor C10 is connected with the 22 pin of the display screen J2;
one end of the capacitor C11 is grounded, and the other end of the capacitor C11 is connected with the 23 pin of the display screen J2;
one end of the capacitor C12 is grounded, and the other end of the capacitor C12 is connected with the 24 pins of the display screen J2;
the 9 pin of the display screen J2 is connected with the 10 pin of the processor U3;
the 10 pin of the display screen J2 is connected with the 11 pin of the processor U3;
the 11 pin of the display screen J2 is connected with the 12 pin of the processor U3;
the 12 pin of the display screen J2 is connected with the 23 pin of the processor U3;
the pin 13 of the display screen J2 is connected with the pin 16 of the processor U3;
the 14 pin of the display screen J2 is connected with the 13 pin of the processor U3;
the pin 2 of the display screen J2 is connected with the grid of a field effect transistor Q1;
the pin 3 of the display screen J2 is connected with the source electrode of the field effect transistor Q1;
a pin 2 of the processor U3 is respectively connected with one end of a power supply VDD1 and one end of a capacitor C20; the other end of the capacitor C20 is grounded;
one end of the capacitor C21 is grounded, and the other end of the capacitor C21 is respectively connected with the pin 2 of the bidirectional thyristor Y2 and the pin 2 of the clock chip U4;
one end of the capacitor C22 is grounded, and the other end of the capacitor C22 is respectively connected with a pin 1 of the bidirectional thyristor Y2 and a pin 3 of the clock chip U4;
a pin 1 of the clock chip U4 is connected with the output end of the voltage stabilizer U5, and a pin 4 of the clock chip U4 is grounded;
the pin 8 of the clock chip U4 is connected with the positive electrode of the battery BT, and the negative electrode of the battery BT is grounded;
the collector of the ambient light sensor Q4 is connected to the collector of the ambient light sensor Q5;
an emitter of the ambient light sensor Q4 is respectively connected with an 8-pin of the processor U3 and one end of the resistor R14; the other end of the resistor R14 is connected with pin 1 of the processor U3;
an emitter of the ambient light sensor Q5 is respectively connected with a pin 9 of the processor U3 and one end of the resistor R15; the other end of the resistor R15 is connected to pin 1 of the processor U3.
In the embodiment, J1 is a selection switch, and screens with different sizes can be selected when the switch is pulled to different positions; when the direction is R2, the circuit drives a small-size screen; when the direction is R3, the circuit drives a large-size screen.
In addition, the clock chip U4 can clock the year, month, day, week, hour, minute and second from hardware, and when the processor U3 is disconnected from the outside, the clock circuit can still provide accurate time for the circuit.
Ambient light sensor Q4 and ambient light sensor Q5 mainly replace traditional entity button to because ambient light sensor sensitivity is high, can realize the gesture operation with two pieces of sensor combinations, promote user's use and experience.
Preferably, the types of the ambient light sensor Q4 and the ambient light sensor Q5 are: PTSMD 021. PTSMD021 has the characteristics of low cost, long service life, can reduce the cost of product, improves the life of product.
Preferably, the clock chip U4 has a model number DS 1302.
Preferably, regulator U5 is model AMS 117-3.3.
Preferably, the device further comprises an expansion socket J3, and a voice module can be added to the expansion socket J3 as required to realize the function of voice broadcast.
1 pin of the expansion socket J3 is grounded;
the 2-pin of the expansion socket J3 is connected with a power supply VDD 1;
the 3-pin of the expansion socket J3 is connected with the 29 pin of the processor U3;
the 4-pin of the expansion socket J3 is connected with the 28 pins of the processor U3;
the 5-pin of expansion socket J3 is connected to the 27-pin of processor U3.
Preferably, the apparatus further comprises an indicator light circuit, the indicator light circuit comprising: the LED comprises a resistor R6, a light emitting diode D4, a light emitting diode D5, a resistor R6 and a resistor R7;
one end of the resistor R6 is connected with a power supply VDD1, the other end of the resistor R6 is connected with the anode of the light-emitting diode D4, and the cathode of the light-emitting diode D4 is grounded;
the cathode of the light emitting diode D5 is grounded, the anode of the light emitting diode D5 is connected with one end of the resistor R7, and the other end of the resistor R7 is connected with the pin 24 of the processor U3.
Preferably, the apparatus further comprises a reset circuit, the reset circuit comprising: the circuit comprises a resistor R8, a resistor R9, a switch S1, a capacitor C16, a resistor R10, a resistor R11 and a switch S2;
one end of the resistor R8 is connected with one end of a power supply VDD 1; the other end of the resistor R8 is respectively connected with a pin 3 of the processor U3 at one end of the resistor R9 and one end of the capacitor C16;
one end of the resistor R9 is connected with one end of the switch S1, and the other end of the switch S1 is grounded;
the other end of the capacitor C16 is grounded;
one end of the resistor R10 is connected with a power supply VDD1, and the other end of the resistor R10 is respectively connected with a pin 25 of the processor U3 and one end of the resistor R11;
the other end of the resistor R11 is connected to one end of the switch S2, and the other end of the switch S2 is grounded.
Preferably, the apparatus further comprises a download circuit, the download circuit comprising: the USB interface comprises a switching chip U1, a bidirectional thyristor Y1, a capacitor C17, a capacitor C18, a capacitor C19, a resistor R12, a resistor R13, a triode Q2, a triode Q3 and a USB interface;
the 1 pin of the switching chip U1 is grounded;
the pin 2 of the adapter chip U1 is connected with the pin 34 of the processor U3;
the pin 3 of the adapter chip U1 is connected with the pin 35 of the processor U3;
4 pins of the switching chip U1 are connected with a power supply VDD 1;
the 5 pins of the switching chip U1 are connected with the 3 pins of the USB interface;
the 6 pins of the switching chip U1 are connected with the 2 pins of the USB interface;
a pin 7 of the switching chip U1 is respectively connected with one end of a capacitor C17 and a pin 1 of a bidirectional thyristor Y1;
the other end of the capacitor C17 is grounded;
one end of the capacitor C18 is grounded, and the other end of the capacitor C18 is respectively connected with the pin 2 of the bidirectional thyristor Y1 and the pin 8 of the switching chip U1;
the 16 pins of the switching chip U1 are respectively connected with the output end of the voltage stabilizer U5 and one end of the capacitor C19; the other end of the capacitor C19 is grounded;
the 5 pins of the USB interface are grounded;
a pin 14 of the switching chip U1 is respectively connected with one end of a resistor R12 and an emitter of a triode Q3;
the other end of the resistor R12 is connected with the base electrode of the triode Q2; the collector of the triode Q2 is connected with pin 3 of the switching chip U1;
an emitter electrode of the triode Q2 is respectively connected with a pin 14 of the switching chip U1 and one end of the resistor R13;
the other end of the resistor R13 is connected with the base electrode of the triode Q3;
the collector of transistor Q3 is connected to pin 25 of processor U3.
Preferably, the signals of the switching chip U1 are: CH 340G.
Preferably, the transistors Q2 and Q3 are of the type: s8050.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect is: the utility model uses the electronic display screen to replace the OLED screen, which can effectively avoid the stroboscopic problem; can effectively relieve visual fatigue.
Ambient light sensor Q4 and ambient light sensor Q5 mainly replace traditional entity button to because ambient light sensor sensitivity is high, can realize the gesture operation with two pieces of sensor combinations, promote user's use and experience.
Drawings
Fig. 1 is a schematic diagram of a learning device with an electronic ink screen in embodiment 1.
FIG. 2 is a circuit diagram of a processor module.
Fig. 3 is a circuit diagram of a display module.
FIG. 4 is a circuit diagram of a voltage regulator circuit.
Fig. 5 is a circuit diagram of an indicator light.
Fig. 6 is a circuit diagram of a reset circuit.
FIG. 7 is a circuit diagram of a download circuit.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
Example 1
The embodiment provides a learning device with an electronic ink screen, as shown in fig. 1, the device includes a processing module, a display module, a power module, a voltage stabilizing circuit, a download circuit, a reset circuit, and an indicator light circuit;
as shown in fig. 2, the display module includes: a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a diode D1, a diode D2, a diode D3, a display screen J2, a selection switch J1, a field effect transistor Q1, an inductor L1 and a power supply VDD 1;
the inductor L1 in this embodiment is a high-frequency choke coil;
the display screen J2 is an electronic ink screen;
the processor U3 has the model number: ESP 32;
as shown in fig. 3, the processing module includes: the system comprises a processor U3, an ambient light sensor Q4, an ambient light sensor Q5, a capacitor C20, a resistor R14, a resistor R15, a capacitor C21, a capacitor C22, a bidirectional thyristor Y2, a clock chip U4 and a battery BT;
the power supply module is a 5V direct-current power supply VDD 1;
as shown in fig. 4, the voltage stabilizing circuit includes: a voltage stabilizer U5, a capacitor C15, a capacitor C13 and an electrode capacitor C14;
one end of the capacitor C15 is grounded, and the other end of the capacitor C15 is respectively connected with the input end (pin 3) of the power supply VDD1 and the voltage regulator U5;
the output end (pin 2) of the voltage stabilizer U5 is respectively connected with the anode of the electrode capacitor C14 and one end of the capacitor C13;
the other end of the capacitor C13 is grounded; the negative pole of the electrode capacitance C14 is grounded;
the output end (pin 2) of the voltage stabilizer U5 outputs 3.3V direct current;
VCC of the processor U3 is connected to +3.3V, then a power supply VDD1 supplies +5V, the +5V needs to be converted into +3.3V to protect an ESP32 chip, and the ESP32 chip is burnt out due to overhigh voltage;
one end of the resistor R1 is grounded, and the other end of the resistor R1 is connected with the grid of the field effect transistor Q1;
one end of the resistor R2 is grounded, and the other end of the resistor R2 is connected with a pin 3 of the selection switch J1;
the source electrode of the field effect transistor Q1 is connected with the 2 pin of the selection switch J1;
a pin 1 of the selection switch J1 is connected with one end of a resistor R3, and the other end of the resistor R3 is grounded;
the drain electrode of the field effect transistor Q1 is respectively connected with one end of an inductor L1, one end of a capacitor C2 and the anode of a diode D3;
the other end of the inductor L1 is connected with a power supply VDD 1;
one end of the capacitor C1 is connected with a power supply VDD1, and the other end is grounded;
the other end of the capacitor C2 is respectively connected with the anode of the diode D1 and the cathode of the diode D2;
the cathode of the diode D1 is grounded;
the anode of the diode D2 is connected with the 23 pin of the display screen J2; the cathode of the diode D3 is connected with the 21 pin of the display J2;
one end of the resistor R4 is connected with a power supply VDD1, and the other end of the resistor R4 is respectively connected with an 8 pin of the display screen J2 and one end of the resistor R5; the other end of the resistor R5 is grounded;
one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is connected with the 4 pins of the display screen J2;
one end of the capacitor C4 is grounded, and the other end of the capacitor C4 is connected with a pin 5 of the display screen J2;
one end of the capacitor C5 is grounded, and the other end of the capacitor C5 is connected with the 15 pin of the display screen J2;
one end of the capacitor C6 is grounded, and the other end of the capacitor C6 is connected with the 18 pin of the display screen J2;
one end of the capacitor C7 is grounded, and the other end of the capacitor C7 is connected with a pin 19 of the display screen J2;
one end of the capacitor C8 is grounded, and the other end of the capacitor C8 is connected with the 20 pins of the display screen J2;
one end of the capacitor C9 is grounded, and the other end of the capacitor C9 is connected with a pin 21 of the display screen J2;
one end of the capacitor C10 is grounded, and the other end of the capacitor C10 is connected with the 22 pin of the display screen J2;
one end of the capacitor C11 is grounded, and the other end of the capacitor C11 is connected with the 23 pin of the display screen J2;
one end of the capacitor C12 is grounded, and the other end of the capacitor C12 is connected with the 24 pins of the display screen J2;
the 9 pin of the display screen J2 is connected with the 10 pin of the processor U3;
the 10 pin of the display screen J2 is connected with the 11 pin of the processor U3;
the 11 pin of the display screen J2 is connected with the 12 pin of the processor U3;
the 12 pin of the display screen J2 is connected with the 23 pin of the processor U3;
the pin 13 of the display screen J2 is connected with the pin 16 of the processor U3;
the 14 pin of the display screen J2 is connected with the 13 pin of the processor U3;
the pin 2 of the display screen J2 is connected with the grid of a field effect transistor Q1;
the pin 3 of the display screen J2 is connected with the source electrode of the field effect transistor Q1;
a pin 2 of the processor U3 is respectively connected with one end of a power supply VDD1 and one end of a capacitor C20; the other end of the capacitor C20 is grounded;
one end of the capacitor C21 is grounded, and the other end of the capacitor C21 is respectively connected with the pin 2 of the bidirectional thyristor Y2 and the pin 2 of the clock chip U4;
one end of the capacitor C22 is grounded, and the other end of the capacitor C22 is respectively connected with a pin 1 of the bidirectional thyristor Y2 and a pin 3 of the clock chip U4;
a pin 1 of the clock chip U4 is connected with the output end of the voltage stabilizer U5, and a pin 4 of the clock chip U4 is grounded;
the pin 8 of the clock chip U4 is connected with the positive electrode of the battery BT, and the negative electrode of the battery BT is grounded;
the collector of the ambient light sensor Q4 is connected to the collector of the ambient light sensor Q5;
an emitter of the ambient light sensor Q4 is respectively connected with an 8-pin of the processor U3 and one end of the resistor R14; the other end of the resistor R14 is connected with pin 1 of the processor U3;
an emitter of the ambient light sensor Q5 is respectively connected with a pin 9 of the processor U3 and one end of the resistor R15; the other end of the resistor R15 is connected to pin 1 of the processor U3.
The types of the ambient light sensor Q4 and the ambient light sensor Q5 are: PTSMD 021. (PTSMD021 has the characteristics of low cost and long service life, can reduce the cost of the product and prolong the service life.)
The clock chip U4 has a model number DS 1302.
Regulator U5 is model AMS 117-3.3.
The device also comprises an expansion socket J3, (the expansion socket J3 can be added with a voice module as required to realize the function of voice broadcast.)
1 pin of the expansion socket J3 is grounded;
the 2-pin of the expansion socket J3 is connected with a power supply VDD 1;
the 3-pin of the expansion socket J3 is connected with the 29 pin of the processor U3;
the 4-pin of the expansion socket J3 is connected with the 28 pins of the processor U3;
the 5-pin of expansion socket J3 is connected to the 27-pin of processor U3.
The device further comprises an indicator light circuit, as shown in fig. 5, the indicator light circuit comprising: the LED comprises a resistor R6, a light emitting diode D4, a light emitting diode D5, a resistor R6 and a resistor R7;
one end of the resistor R6 is connected with a power supply VDD1, the other end of the resistor R6 is connected with the anode of the light-emitting diode D4, and the cathode of the light-emitting diode D4 is grounded;
the cathode of the light emitting diode D5 is grounded, the anode of the light emitting diode D5 is connected with one end of the resistor R7, and the other end of the resistor R7 is connected with the pin 24 of the processor U3.
The apparatus further includes a reset circuit, as shown in fig. 6, the reset circuit including: the circuit comprises a resistor R8, a resistor R9, a switch S1, a capacitor C16, a resistor R10, a resistor R11 and a switch S2;
one end of the resistor R8 is connected with one end of a power supply VDD 1; the other end of the resistor R8 is respectively connected with a pin 3 of the processor U3 at one end of the resistor R9 and one end of the capacitor C16;
one end of the resistor R9 is connected with one end of the switch S1, and the other end of the switch S1 is grounded;
the other end of the capacitor C16 is grounded;
one end of the resistor R10 is connected with a power supply VDD1, and the other end of the resistor R10 is respectively connected with a pin 25 of the processor U3 and one end of the resistor R11;
the other end of the resistor R11 is connected to one end of the switch S2, and the other end of the switch S2 is grounded.
The apparatus further comprises a download circuit, as shown in fig. 7, the download circuit comprising: the USB interface comprises a switching chip U1, a bidirectional thyristor Y1, a capacitor C17, a capacitor C18, a capacitor C19, a resistor R12, a resistor R13, a triode Q2, a triode Q3 and a USB interface;
the 1 pin of the switching chip U1 is grounded;
the pin 2 of the adapter chip U1 is connected with the pin 34 of the processor U3;
the pin 3 of the adapter chip U1 is connected with the pin 35 of the processor U3;
4 pins of the switching chip U1 are connected with a power supply VDD 1;
the 5 pins of the switching chip U1 are connected with the 3 pins of the USB interface;
the 6 pins of the switching chip U1 are connected with the 2 pins of the USB interface;
a pin 7 of the switching chip U1 is respectively connected with one end of a capacitor C17 and a pin 1 of a bidirectional thyristor Y1;
the other end of the capacitor C17 is grounded;
one end of the capacitor C18 is grounded, and the other end of the capacitor C18 is respectively connected with the pin 2 of the bidirectional thyristor Y1 and the pin 8 of the switching chip U1;
the 16 pins of the switching chip U1 are respectively connected with the output end of the voltage stabilizer U5 and one end of the capacitor C19; the other end of the capacitor C19 is grounded;
the 5 pins of the USB interface are grounded;
a pin 14 of the switching chip U1 is respectively connected with one end of a resistor R12 and an emitter of a triode Q3;
the other end of the resistor R12 is connected with the base electrode of the triode Q2; the collector of the triode Q2 is connected with pin 3 of the switching chip U1;
an emitter electrode of the triode Q2 is respectively connected with a pin 14 of the switching chip U1 and one end of the resistor R13;
the other end of the resistor R13 is connected with the base electrode of the triode Q3;
the collector of transistor Q3 is connected to pin 25 of processor U3.
The signals of the switching chip U1 are: CH 340G.
The types of the transistor Q2 and the transistor Q3 are: s8050.
The embodiment adopts the existing chip and program to develop the learning device with the electronic ink screen, and compared with the traditional learning device, the embodiment adopts the electronic ink screen to replace an OLED screen, so that the stroboscopic problem can be effectively avoided; can effectively alleviate visual fatigue, designed relevant circuit around the application of electron china ink screen simultaneously, make its use more stable, simultaneously, the environment light sensor Q4 and the environment light sensor Q5 that this embodiment adopted mainly replace traditional entity button to because environment light sensor sensitivity is high, can realize gesture operation with two pieces of sensor combinations, promote user's use and experience.
The terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A learning device with an electronic ink screen is characterized by comprising a processing module, a display module, a power supply module and a voltage stabilizing circuit;
the display module includes: a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a diode D1, a diode D2, a diode D3, a display screen J2, a selection switch J1, a field effect transistor Q1, an inductor L1 and a power supply VDD 1;
the display screen J2 is an electronic ink screen;
the processing module comprises: the system comprises a processor U3, an ambient light sensor Q4, an ambient light sensor Q5, a capacitor C20, a resistor R14, a resistor R15, a capacitor C21, a capacitor C22, a bidirectional thyristor Y2, a clock chip U4 and a battery BT;
the power supply module is a 5V direct-current power supply VDD 1;
the voltage stabilizing circuit comprises: a voltage stabilizer U5, a capacitor C15, a capacitor C13 and an electrode capacitor C14;
one end of the capacitor C15 is grounded, and the other end of the capacitor C15 is respectively connected with the input ends of a power supply VDD1 and a voltage regulator U5;
the output end of the voltage stabilizer U5 is respectively connected with the anode of the electrode capacitor C14 and one end of the capacitor C13;
the other end of the capacitor C13 is grounded; the negative pole of the electrode capacitance C14 is grounded;
pin 1 of regulator U5 is grounded;
the output end of the voltage stabilizer U5 outputs 3.3V direct current;
one end of the resistor R1 is grounded, and the other end of the resistor R1 is connected with the grid of the field effect transistor Q1;
one end of the resistor R2 is grounded, and the other end of the resistor R2 is connected with a pin 3 of the selection switch J1;
the source electrode of the field effect transistor Q1 is connected with the 2 pin of the selection switch J1;
a pin 1 of the selection switch J1 is connected with one end of a resistor R3, and the other end of the resistor R3 is grounded;
the drain electrode of the field effect transistor Q1 is respectively connected with one end of an inductor L1, one end of a capacitor C2 and the anode of a diode D3;
the other end of the inductor L1 is connected with a power supply VDD 1;
one end of the capacitor C1 is connected with a power supply VDD1, and the other end is grounded;
the other end of the capacitor C2 is respectively connected with the anode of the diode D1 and the cathode of the diode D2;
the cathode of the diode D1 is grounded;
the anode of the diode D2 is connected with the 23 pin of the display screen J2; the cathode of the diode D3 is connected with the 21 pin of the display J2;
one end of the resistor R4 is connected with a power supply VDD1, and the other end of the resistor R4 is respectively connected with an 8 pin of the display screen J2 and one end of the resistor R5; the other end of the resistor R5 is grounded;
one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is connected with the 4 pins of the display screen J2;
one end of the capacitor C4 is grounded, and the other end of the capacitor C4 is connected with a pin 5 of the display screen J2;
one end of the capacitor C5 is grounded, and the other end of the capacitor C5 is connected with the 15 pin of the display screen J2;
one end of the capacitor C6 is grounded, and the other end of the capacitor C6 is connected with the 18 pin of the display screen J2;
one end of the capacitor C7 is grounded, and the other end of the capacitor C7 is connected with a pin 19 of the display screen J2;
one end of the capacitor C8 is grounded, and the other end of the capacitor C8 is connected with the 20 pins of the display screen J2;
one end of the capacitor C9 is grounded, and the other end of the capacitor C9 is connected with a pin 21 of the display screen J2;
one end of the capacitor C10 is grounded, and the other end of the capacitor C10 is connected with the 22 pin of the display screen J2;
one end of the capacitor C11 is grounded, and the other end of the capacitor C11 is connected with the 23 pin of the display screen J2;
one end of the capacitor C12 is grounded, and the other end of the capacitor C12 is connected with the 24 pins of the display screen J2;
the 9 pin of the display screen J2 is connected with the 10 pin of the processor U3;
the 10 pin of the display screen J2 is connected with the 11 pin of the processor U3;
the 11 pin of the display screen J2 is connected with the 12 pin of the processor U3;
the 12 pin of the display screen J2 is connected with the 23 pin of the processor U3;
the pin 13 of the display screen J2 is connected with the pin 16 of the processor U3;
the 14 pin of the display screen J2 is connected with the 13 pin of the processor U3;
the pin 2 of the display screen J2 is connected with the grid of a field effect transistor Q1;
the pin 3 of the display screen J2 is connected with the source electrode of the field effect transistor Q1;
pin 1 of processor U3 is grounded; pin 38 of processor U3 is connected to ground; pin 39 of processor U3 is connected to ground;
a pin 2 of the processor U3 is respectively connected with one end of a power supply VDD1 and one end of a capacitor C20; the other end of the capacitor C20 is grounded;
one end of the capacitor C21 is grounded, and the other end of the capacitor C21 is respectively connected with the pin 2 of the bidirectional thyristor Y2 and the pin 2 of the clock chip U4;
one end of the capacitor C22 is grounded, and the other end of the capacitor C22 is respectively connected with a pin 1 of the bidirectional thyristor Y2 and a pin 3 of the clock chip U4;
a pin 1 of the clock chip U4 is connected with the output end of the voltage stabilizer U5, and a pin 4 of the clock chip U4 is grounded;
the pin 8 of the clock chip U4 is connected with the positive electrode of the battery BT, and the negative electrode of the battery BT is grounded;
the collector of the ambient light sensor Q4 is connected to the collector of the ambient light sensor Q5;
an emitter of the ambient light sensor Q4 is respectively connected with an 8-pin of the processor U3 and one end of the resistor R14; the other end of the resistor R14 is connected with pin 1 of the processor U3;
an emitter of the ambient light sensor Q5 is respectively connected with a pin 9 of the processor U3 and one end of the resistor R15; the other end of the resistor R15 is connected to pin 1 of the processor U3.
2. The learning device with electronic ink-and-water screen as claimed in claim 1, wherein the model of the ambient light sensor Q4 and the ambient light sensor Q5 is: PTSMD 021.
3. The learning device with electronic ink-and-water screen as claimed in claim 1, wherein the clock chip U4 has model number DS 1302.
4. The learning device with electronic ink-and-water screen of claim 1, wherein the model of the voltage regulator U5 is AMS 117-3.3.
5. The learning device with electronic ink-and-water screen of claim 1, wherein the device further comprises an expansion socket J3; 1 pin of the expansion socket J3 is grounded;
the 2-pin of the expansion socket J3 is connected with a power supply VDD 1;
the 3-pin of the expansion socket J3 is connected with the 29 pin of the processor U3;
the 4-pin of the expansion socket J3 is connected with the 28 pins of the processor U3;
the 5-pin of expansion socket J3 is connected to the 27-pin of processor U3.
6. The learning device with electronic ink screen of any one of claims 1 to 5, wherein the device further comprises an indicator light circuit, the indicator light circuit comprising: the LED comprises a resistor R6, a light emitting diode D4, a light emitting diode D5, a resistor R6 and a resistor R7;
one end of the resistor R6 is connected with a power supply VDD1, the other end of the resistor R6 is connected with the anode of the light-emitting diode D4, and the cathode of the light-emitting diode D4 is grounded;
the cathode of the light emitting diode D5 is grounded, the anode of the light emitting diode D5 is connected with one end of the resistor R7, and the other end of the resistor R7 is connected with the pin 24 of the processor U3.
7. The learning device with electronic ink-and-water screen of claim 6, characterized in that the device further comprises a reset circuit, the reset circuit comprising: the circuit comprises a resistor R8, a resistor R9, a switch S1, a capacitor C16, a resistor R10, a resistor R11 and a switch S2;
one end of the resistor R8 is connected with one end of a power supply VDD 1; the other end of the resistor R8 is respectively connected with a pin 3 of the processor U3 at one end of the resistor R9 and one end of the capacitor C16;
one end of the resistor R9 is connected with one end of the switch S1, and the other end of the switch S1 is grounded;
the other end of the capacitor C16 is grounded;
one end of the resistor R10 is connected with a power supply VDD1, and the other end of the resistor R10 is respectively connected with a pin 25 of the processor U3 and one end of the resistor R11;
the other end of the resistor R11 is connected to one end of the switch S2, and the other end of the switch S2 is grounded.
8. The learning device with electronic ink-and-water screen of claim 7, wherein the device further comprises a download circuit, the download circuit comprising: the USB interface comprises a switching chip U1, a bidirectional thyristor Y1, a capacitor C17, a capacitor C18, a capacitor C19, a resistor R12, a resistor R13, a triode Q2, a triode Q3 and a USB interface;
the 1 pin of the switching chip U1 is grounded;
the pin 2 of the adapter chip U1 is connected with the pin 34 of the processor U3;
the pin 3 of the adapter chip U1 is connected with the pin 35 of the processor U3;
4 pins of the switching chip U1 are connected with a power supply VDD 1;
the 5 pins of the switching chip U1 are connected with the 3 pins of the USB interface;
the 6 pins of the switching chip U1 are connected with the 2 pins of the USB interface;
a pin 7 of the switching chip U1 is respectively connected with one end of a capacitor C17 and a pin 1 of a bidirectional thyristor Y1;
the other end of the capacitor C17 is grounded;
one end of the capacitor C18 is grounded, and the other end of the capacitor C18 is respectively connected with the pin 2 of the bidirectional thyristor Y1 and the pin 8 of the switching chip U1;
the 16 pins of the switching chip U1 are respectively connected with the output end of the voltage stabilizer U5 and one end of the capacitor C19; the other end of the capacitor C19 is grounded;
pin 1 of the USB interface is connected with the output end of the voltage stabilizer U5;
the 5 pins of the USB interface are grounded;
a pin 14 of the switching chip U1 is respectively connected with one end of a resistor R12 and an emitter of a triode Q3;
the other end of the resistor R12 is connected with the base electrode of the triode Q2; the collector of the triode Q2 is connected with pin 3 of the switching chip U1;
an emitter electrode of the triode Q2 is respectively connected with a pin 14 of the switching chip U1 and one end of the resistor R13;
the other end of the resistor R13 is connected with the base electrode of the triode Q3;
the collector of transistor Q3 is connected to pin 25 of processor U3.
9. The learning device with electronic ink-water screen as claimed in claim 8, wherein the signals of the switching chip U1 are: CH 340G.
10. The learning device with electronic ink-and-water screen of claim 8, wherein the model of the transistor Q2 and the transistor Q3 is: s8050.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021383945.3U CN213123372U (en) | 2020-07-14 | 2020-07-14 | Learning device with electronic ink screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021383945.3U CN213123372U (en) | 2020-07-14 | 2020-07-14 | Learning device with electronic ink screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213123372U true CN213123372U (en) | 2021-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021383945.3U Active CN213123372U (en) | 2020-07-14 | 2020-07-14 | Learning device with electronic ink screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213123372U (en) |
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2020
- 2020-07-14 CN CN202021383945.3U patent/CN213123372U/en active Active
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