CN210501957U

CN210501957U - Automatic page turning device for music book

Info

Publication number: CN210501957U
Application number: CN201920792523.2U
Authority: CN
Inventors: 余善恩; 黄继昊; 景雪峰; 刘光宇; 俞武嘉; 暨仲明
Original assignee: Hangzhou Dianzi University
Current assignee: Hangzhou Dianzi University
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-05-12
Anticipated expiration: 2029-05-29

Abstract

The utility model discloses a music book automatic page turning device. In the prior art, a device for automatically turning music scores is still relatively vacant. The utility model discloses a foundation support, upset piece, upset steering wheel, upset pole, electric putter, vacuum chuck, negative pressure fan, touch footboard and circuit part. The turning block and the basic bracket form a revolute pair and are driven by a turning steering engine. The inner end of the turnover rod is fixed with the turnover block, and the outer end of the turnover rod is fixed with the shell of the electric push rod. The outer end of the push-out rod of the electric push rod is fixed with a vacuum chuck. The back of the vacuum chuck is provided with a negative pressure fan. The touch pedal includes a substrate and five infrared sensors. The five infrared sensors are respectively fixed at the center and four corners of the substrate. The utility model discloses use infrared sensor to control and turn over the page, infrared sensor compares traditional mechanical structure and has characteristics such as non-contact, sensitivity height, simple structure and low price.

Description

Automatic page turning device for music book

Technical Field

The utility model belongs to the technical field of the automatic page turning, concretely relates to music book automatic page turning device.

Background

Today, both culture and economy are rapidly developing, more and more people are beginning to step into the hallucination of classical art. Various melodies have come into the field of view of the public. When people enjoy the performance of the performance group, people can easily find that various players place the music score. During the playing process, after a music score of one page is played, they often need to leave one hand free to turn pages for the next operation. But such halfway page turning greatly affects their performance consistency, and if a page is turned more than once in the process of page turning, their performance rhythm is disturbed. The present invention has been made in an effort to design a device for helping players to automatically turn pages. Automatic page turning devices are available at present, but the device for automatically turning the music score is still relatively vacant. The automatic page turning is mainly used for helping disabled people to read. The automatic music score turning device is specially suitable for on-site playing environment, and is used for ensuring the playing consistency of players and preventing the players from being disturbed in playing rhythm due to turning music score pages.

At present, there are a number of automatic page turning devices on the market, but the following problems still exist in the automatic page turning devices on the market:

(1) automatic full page turning cannot be completely realized, and other parts are often required to participate.

(2) The automatic page-turning device is unstable and cannot ensure that pages can be successfully turned each time.

(3) Cannot satisfy mass production.

Disclosure of Invention

An object of the utility model is to provide a music book automatic page turning device.

The utility model discloses a foundation support, upset piece, upset steering wheel, upset pole, electric putter, vacuum chuck, negative pressure fan, touch footboard and circuit part. The turning block and the basic bracket form a revolute pair and are driven by a turning steering engine. The inner end of the turnover rod is fixed with the turnover block, and the outer end of the turnover rod is fixed with the shell of the electric push rod. The outer end of the push-out rod of the electric push rod is fixed with a vacuum chuck. The back of the vacuum chuck is provided with a negative pressure fan. The touch pedal includes a substrate and five infrared sensors. The five infrared sensors are respectively fixed at the center and four corners of the substrate.

The circuit part comprises a power supply module, a control module and a motor driver. And the power supply module supplies power to the control module, the motor driver, the turnover steering engine and the infrared sensor through the voltage conversion chip. The control module includes a controller. Two crystal oscillator pins of the controller are respectively connected with two ends of the crystal oscillator, and are respectively connected with one ends of the capacitor C6 and the capacitor C7. The other ends of the capacitor C6 and the capacitor C7 are grounded. The reset pin of the controller is connected with the reset key, the resistor R0 and one end of the capacitor C5. The other ends of the reset key and the capacitor C5 are connected with the power supply output end of the power module. The other end of the resistor R0 is connected to ground. And five second I/O ports of the controller are respectively connected with signal output ports of the five infrared sensors. And a third I/O port of the controller is connected with a PWM wave input port of the turnover steering engine. The controller is connected with each motor through the motor driver.

Further, the motor driver comprises a motor driving chip. The motor driver chip is model number L298N. The motor driving chip is provided with 9 pins connected with a power supply output end of the power supply module, 4 pins connected with external 12V voltage, 2 pins connected with the anode of a voltage regulator tube D5, the cathode of a voltage regulator tube D1 and one terminal of a motor in the electric push rod, 3 pins connected with the anode of a voltage regulator tube D6, the cathode of a voltage regulator tube D2 and the other terminal of the motor in the electric push rod, 13 pins connected with the anode of a voltage regulator tube D7, the cathode of a voltage regulator tube D3 and one terminal of the motor for driving the negative pressure fan, and 14 pins connected with the anode of a voltage regulator tube D8, the cathode of a voltage regulator tube D4 and the other terminal of the motor for driving the negative pressure fan. And cathodes of the voltage regulator tube D5, the voltage regulator tube D6, the voltage regulator tube D7 and the voltage regulator tube D8 are all connected with external 12V voltage. The positive electrodes of

pins

1, 8 and 15 of the motor driving chip, the voltage regulator tube D1, the voltage regulator tube D2, the voltage regulator tube D3 and the voltage regulator tube D4 are all grounded.

Pins

6 and 11 of the motor driving chip are both connected with the power supply output end of the power module 11.

Pins

5, 7, 10 and 12 of the motor driving chip are four signal input ends of a motor driver 13 respectively and are connected with four fourth I/O ports of the controller respectively.

Furthermore, the power supply module comprises a voltage conversion chip and a power signal lamp. The model of the voltage conversion chip is LM 2576. The 1 pin of the voltage conversion chip is connected with one end of the capacitor C1, one end of the capacitor C2 and the external 12V voltage, and the 2 pin is connected with one end of the inductor L1 and the negative electrode of the diode D0. The 4 pins of the voltage conversion chip and the other end of the inductor L1 are connected with the anode of the power signal lamp, one end of the capacitor C3 and one end of the capacitor C4.

Pins

3 and 5 of the voltage conversion chip, the capacitor C1, the capacitor C2, the capacitor C3, the other end of the capacitor C4 and the anode of the diode D0 are all grounded. The negative pole of the power signal lamp is connected with one end of a resistor R4. The other end of the resistor R4 is connected to ground. The end of the inductor L1 away from the voltage conversion chip is the power supply output end of the power module.

Furthermore, the control module also comprises a liquid crystal screen. The liquid crystal screen adopts an OLED module with the model number being SSD 1306. Five signal input ends of the liquid crystal screen are respectively connected with five fifth I/O ports of the controller. The power supply section of the liquid crystal display is connected with the power supply output end of the power module, and the ground wire end is grounded.

Further, the control module further includes a first KEY1, a second KEY2, and a third KEY 3. The three first I/O ports of the controller are respectively connected to the first KEY1, the second KEY2 and the third KEY 3. The first KEY1, the second KEY2 and the third KEY3 are respectively connected to one end of a resistor R1, a resistor R2 and a resistor R3. The other ends of the resistor R1, the resistor R2 and the resistor R3 are all grounded.

Further, the controller adopts a singlechip with the model of STC 125608.

Further, the basic support comprises a support column and a V-shaped music stand. The V-shaped music stand is fixed on the support column. The V-shaped most concave part on the inner side surface of the V-shaped music stand is coincided with the axis of the supporting column.

Furthermore, the turnover steering engine is fixed in the supporting column, and the output shaft is fixed with the turnover block.

Furthermore, the utility model also comprises a book end. One end of the book holder and the right side of the V-shaped music stand form a revolute pair. The book end is provided with a torsion spring. Two ends of the torsion spring are respectively fixed with the book holder and the V-shaped music stand.

Further, the length and width dimensions of the substrate are 25cm × 10 cm.

The utility model has the advantages that:

1. the invention uses the infrared sensor to control page turning, and compared with the traditional mechanical structure, the infrared sensor has the characteristics of non-contact, high sensitivity, simple structure, low price and the like.

2. The negative pressure fan well utilizes wind power to adsorb, and the successful implementation of page turning operation is ensured.

3. The controller of the invention has a timing function, can determine time parameters in a training mode, can realize accurate time setting later, ensures complete autonomy during performance, and does not need any operation by feet. The invention has the characteristics of low price and good performance.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of a touch pedal according to the present invention;

fig. 3 is a system block diagram of the circuit part of the present invention;

fig. 4 is a schematic circuit diagram of a power module according to the present invention;

fig. 5 is a schematic circuit diagram of the motor driver of the present invention;

fig. 6 is a schematic circuit diagram of the control module of the present invention.

Detailed Description

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

As shown in fig. 1, an automatic page turning device for music scores comprises a basic support 1, a turning block 2, a turning steering engine, a turning rod 3, a mounting block 4, an electric push rod 5, a vacuum sucker 6, a negative pressure fan 7, a book end 8, a touch pedal and a circuit part. The base support 1 includes a support column and a V-shaped music stand. The V-shaped music stand is fixed on the support column. The V-shaped most concave part on the inner side surface of the V-shaped music stand is coincided with the axis of the supporting column. The turning block 2 and the top end of the support column form a rotating pair with a common axis coinciding with the axis of the support column. The turnover steering engine is fixed in the support column, and the output shaft is fixed with the turnover block 2.

The inner end of the turning rod 3 is fixed with the turning block 2, and the outer end is fixed with the mounting block 4. The outer shell of the electric push rod 5 is fixed on the mounting block 4. The axis of the push-out rod of the electric push rod 5 is parallel to the axis of the support column. The outer end of the push-out rod of the electric push rod 5 is fixed with a vacuum chuck 6. When the vacuum chuck 6 is contacted with the right side of the inner side surface of the V-shaped music stand (the right side when the V-shaped music stand is seen from the inner side of the V-shaped music stand), the adsorption port of the vacuum chuck 6 is contacted with the inner side surface of the V-shaped music stand, so that the vacuum chuck can suck the pages of the music book; the back of the vacuum chuck 6 is provided with a negative pressure fan 7 driven by a switched reluctance motor. One end of the book end 8 and the right side of the V-shaped music stand form a revolute pair. The book end 8 is provided with a torsion spring. Two ends of the torsion spring are respectively fixed with the book clamp 8 and the V-shaped music stand. After the book holder 8 is turned over and the music book is stuffed in, the torsion spring applies elasticity to the book holder 8, so that the book holder 8 compresses the music book.

As shown in fig. 2, the touch pedal includes a substrate 9 and five infrared sensors 10 (infrared diffuse reflection photoelectric switches). Five infrared sensors 10 are respectively fixed at the center and four corners of the substrate 9, and the detection heads are all arranged upwards. The substrate 9 has a length and width dimension of 25cm × 10 cm.

As shown in fig. 3, the circuit part includes a power supply module 11, a control module 12, and a motor driver 13. The power module 11 supplies power to the control module 12, the motor driver 13, the turnover steering engine and the infrared sensor 10 through the voltage conversion chip IC 1.

As shown in fig. 4, the power module 11 includes a voltage conversion chip IC1 and a power signal LED 0. The voltage conversion chip IC1 is model LM 2576. The 1 pin of the voltage conversion chip IC1 is connected with one end of the capacitor C1 and the capacitor C2 and the external 12V voltage, and the 2 pin is connected with one end of the inductor L1 and the cathode of the diode D0. The 4 pins of the voltage conversion chip IC1 and the other end of the inductor L1 are connected to the positive electrode of the power signal LED0, one end of the capacitor C3 and one end of the capacitor C4.

Pins

3 and 5 of the voltage conversion chip IC1, the capacitor C1, the capacitor C2, the capacitor C3, the other end of the capacitor C4 and the anode of the diode D0 are all grounded. The diode D0 functions as a freewheel protection. The negative pole of the power signal lamp LED0 is connected with one end of the resistor R4. The other end of the resistor R4 is connected to ground. The end of the inductor L1 away from the voltage conversion chip IC1 is the power supply output terminal VCC of the power module 11.

As shown in fig. 5, the motor driver 13 includes a motor drive chip U2. The motor driver chip U2 is model L298N. A pin 9 of the motor driving chip U2 is connected with a power supply output end VCC of the power module 11, a pin 4 is connected with an external 12V voltage, a pin 2 is connected with an anode of a voltage regulator tube D5, a cathode of a voltage regulator tube D1 and one terminal of a motor in the electric push rod 5, a pin 3 is connected with an anode of the voltage regulator tube D6, a cathode of the voltage regulator tube D2 and the other terminal of the motor in the electric push rod 5, a pin 13 is connected with an anode of a voltage regulator tube D7, a cathode of the voltage regulator tube D3 and one terminal of a switched reluctance motor corresponding to the negative pressure fan 7, and a pin 14 is connected with an anode of the voltage regulator tube D8, a cathode of the voltage regulator tube D4 and the other terminal of the switched reluctance motor corresponding to.

And cathodes of the voltage regulator tube D5, the voltage regulator tube D6, the voltage regulator tube D7 and the voltage regulator tube D8 are all connected with external 12V voltage. The positive electrodes of

pins

1, 8 and 15 of the motor driving chip U2, the voltage regulator tube D1, the voltage regulator tube D2, the voltage regulator tube D3 and the voltage regulator tube D4 are all grounded.

Pins

6 and 11 of the motor driving chip U2 are both connected to the power supply output terminal VCC of the power module 11.

Pins

5, 7, 10 and 12 of the motor driver chip U2 are four signal input terminals of the motor driver 13, respectively.

As shown in fig. 6, the control module 12 includes a controller U1 and a liquid crystal panel OLED. The liquid crystal screen adopts an OLED module with the model number being SSD 1306. The controller U1 adopts a single chip microcomputer with the model of STC 125608. Two crystal oscillator pins (6 and 7 pins) of the controller U1 are respectively connected to two ends of the crystal oscillator XTAL, and are respectively connected to one ends of the capacitor C6 and the capacitor C7. The other ends of the capacitor C6 and the capacitor C7 are grounded. The reset pin (pin 3) of the controller U1 is connected to one end of the reset button S0, the resistor R0 and the capacitor C5. The other ends of the reset key S0 and the capacitor C5 are both connected to the power supply output terminal VCC of the power module 11. The other end of the resistor R0 is connected to ground. Three first I/O ports (pins 11, 12, and 13) of the controller U1 are connected to the first KEY1, the second KEY2, and the third KEY3, respectively. The first KEY1, the second KEY2 and the third KEY3 are respectively connected to one end of a resistor R1, a resistor R2 and a resistor R3. The other ends of the resistor R1, the resistor R2 and the resistor R3 are all grounded. Five second I/O ports (21, 22, 23, 24 and 25 pins) of the controller U1 are respectively connected with signal output ports of the five infrared sensors 10. And a third I/O port (pin 19) of the controller U1 is connected with a PWM wave input port of the turnover steering engine. The four fourth I/O ports (27, 18, 1, 12 pins) of the controller U1 are connected to four signal inputs of the motor driver 13, respectively. Five fifth I/O ports (26, 20, 17, 16 and 15 pins) of the controller U1 are respectively connected with five signal input ends of the liquid crystal panel OLED. The power supply section of the liquid crystal display OLED is connected with the power supply output end VCC of the power module 11, and the ground wire end is grounded.

The specific parameters are that the capacitance C1 is 0.1uf, the capacitance C2 is 100uf, the capacitance C3 is 1000uf, the capacitance C4 is 10uf, the capacitance C6 and the capacitance C7 are 30pf, the resistance R0 is 10k, the R5 and the R6 are 5k, and the inductance L1 is 100 mH.

The first KEY1 is used to implement the temporary stop timing function in the training mode; the second KEY2 is used to increase the time by one second when setting the time; the third KEY3 is used to reduce the time by one second when setting the time.

The working principle of the utility model is as follows:

the user opens the music book and places it on the V-shaped stand and brings the vacuum chuck 6 into contact with the right-hand page of the music book without obstructing the content of the music book. The user then presses the score with the book holder 8.

When a user needs to turn pages, a touch pedal is placed by feet; if the controller receives the trigger signals of three or more infrared sensors 10, the controller controls the electric push rod 5 to push out, so that the vacuum suction cup 6 reaches the middle part of the page on the right side of the music score to be contacted. And then, the controller controls the switched reluctance motor corresponding to the negative pressure fan 7 to rotate, so that the vacuum suction cup 6 sucks the page on the right side of the music book.

The controller controls the turning steering engine to rotate, so that the vacuum suction disc 6 drives the page on the right side of the music book to turn to the left side, and when the vacuum suction disc 6 reaches the left side of the music book; the controller controls the switched reluctance motor corresponding to the negative pressure fan 7 to stop rotating, and the electric push rod 5 retracts to be separated from the music score. At the moment, the page turning is finished, and the turning steering engine and the electric push rod 5 are controlled to reset.

In addition, through setting for the time of turning over the page, the utility model discloses can also realize automatic page turning to avoid the user to operate the touch pedal and the distraction that leads to in playing, go on smoothly when guaranteeing the performance, the performance that can not appear not coherent.

Claims

1. An automatic page turning device for music scores comprises a basic bracket, a turning block, a turning steering engine, a turning rod, an electric push rod, a vacuum sucker, a negative pressure fan, a touch pedal and a circuit part; the method is characterized in that: the turning block and the basic bracket form a revolute pair and are driven by a turning steering engine; the inner end of the turnover rod is fixed with the turnover block, and the outer end of the turnover rod is fixed with the shell of the electric push rod; a vacuum chuck is fixed at the outer end of a push-out rod of the electric push rod; a negative pressure fan is arranged on the back of the vacuum chuck; the touch pedal comprises a substrate and five infrared sensors; the five infrared sensors are respectively fixed at the center and four corners of the substrate;

the circuit part comprises a power supply module, a control module and a motor driver; the power supply module supplies power to the control module, the motor driver, the turnover steering engine and the infrared sensor through the voltage conversion chip; the control module comprises a controller; two crystal oscillator pins of the controller are respectively connected with two ends of the crystal oscillator and are respectively connected with one ends of a capacitor C6 and a capacitor C7; the other ends of the capacitor C6 and the capacitor C7 are grounded; the reset pin of the controller is connected with one end of the reset key, the resistor R0 and the capacitor C5; the other ends of the reset key and the capacitor C5 are connected with the power supply output end of the power module; the other end of the resistor R0 is grounded; five second I/O ports of the controller are respectively connected with signal output ports of the five infrared sensors; a third I/O port of the controller is connected with a PWM wave input port of the turnover steering engine; the controller is connected with each motor through the motor driver.

2. The automatic page turning device for music score as claimed in claim 1, wherein: the motor driver comprises a motor driving chip; the model number of the motor driving chip is L298N; the 9 pins of the motor driving chip are connected with a power supply output end of the power module, the 4 pins are connected with external 12V voltage, the 2 pins are connected with the anode of a voltage-regulator tube D5, the cathode of a voltage-regulator tube D1 and one terminal of a motor in the electric push rod, the 3 pins are connected with the anode of a voltage-regulator tube D6, the cathode of a voltage-regulator tube D2 and the other terminal of the motor in the electric push rod, the 13 pins are connected with the anode of a voltage-regulator tube D7, the cathode of a voltage-regulator tube D3 and one terminal of the motor for driving the negative pressure fan, and the 14 pins are connected with the anode of a voltage-regulator tube D8, the cathode of a voltage-regulator tube D4 and; the cathodes of the voltage-regulator tube D5, the voltage-regulator tube D6, the voltage-regulator tube D7 and the voltage-regulator tube D8 are all connected with external 12V voltage; pins 1, 8 and 15 of the motor driving chip, a voltage regulator tube D1, a voltage regulator tube D2, a voltage regulator tube D3 and the positive electrode of a voltage regulator tube D4 are all grounded; pins 6 and 11 of the motor driving chip are both connected with the power supply output end of the power module 11; pins 5, 7, 10 and 12 of the motor driving chip are four signal input ends of the motor driver respectively and are connected with four fourth I/O ports of the controller respectively.

3. The automatic page turning device for music score as claimed in claim 1, wherein: the power supply module comprises a voltage conversion chip and a power signal lamp; the model of the voltage conversion chip is LM 2576; a pin 1 of the voltage conversion chip is connected with one end of a capacitor C1, one end of a capacitor C2 and external 12V voltage, and a pin 2 is connected with one end of an inductor L1 and the negative electrode of a diode D0; the 4 pins of the voltage conversion chip and the other end of the inductor L1 are connected with the anode of the power signal lamp, one end of the capacitor C3 and one end of the capacitor C4; pins 3 and 5 of the voltage conversion chip, a capacitor C1, a capacitor C2, a capacitor C3, the other end of the capacitor C4 and the anode of the diode D0 are all grounded; the negative pole of the power signal lamp is connected with one end of a resistor R4; the other end of the resistor R4 is grounded; the end of the inductor L1 away from the voltage conversion chip is the power supply output end of the power module.

4. The automatic page turning device for music score as claimed in claim 1, wherein: the control module also comprises a liquid crystal screen; the liquid crystal screen adopts an OLED module with the model number of SSD 1306; five signal input ends of the liquid crystal screen are respectively connected with five fifth I/O ports of the controller; the power supply section of the liquid crystal display is connected with the power supply output end of the power module, and the ground wire end is grounded.

5. The automatic page turning device for music score as claimed in claim 1, wherein: the control module further comprises a first KEY1, a second KEY2 and a third KEY 3; three first I/O ports of the controller are respectively connected with the first KEY1, the second KEY2 and the third KEY 3; the first KEY1, the second KEY2 and the third KEY3 are respectively connected with one end of a resistor R1, a resistor R2 and one end of a resistor R3; the other ends of the resistor R1, the resistor R2 and the resistor R3 are all grounded.

6. The automatic page turning device for music score as claimed in claim 1, wherein: the controller adopts a singlechip with the model of STC 125608.

7. The automatic page turning device for music score as claimed in claim 1, wherein: the basic bracket comprises a support column and a V-shaped music stand; the V-shaped music stand is fixed on the support column; the V-shaped most concave part on the inner side surface of the V-shaped music stand is coincided with the axis of the supporting column.

8. The automatic page turning device for music score as claimed in claim 7, wherein: the turnover steering engine is fixed in the supporting column, and the output shaft is fixed with the turnover block.

9. The automatic page turning device for music score as claimed in claim 7, wherein: the utility model also comprises a book end; one end of the book holder and the right side of the V-shaped music stand form a revolute pair; the book end is provided with a torsion spring; two ends of the torsion spring are respectively fixed with the book holder and the V-shaped music stand.

10. The automatic page turning device for music score as claimed in claim 1, wherein: the length and width of the substrate are 25cm multiplied by 10 cm.