Keyboard-free electronic organ

Abstract

The utility model discloses an electronic organ without a keyboard. The electronic organ comprises a case, a left racket and a right racket, a single-chip microcomputer is installed in the guitar box, the single-chip microcomputer is connected with a switching circuit through a wire, and the switching circuit is connected with a left wireless receiving plate and a right wireless receiving plate through wires. A left box is connected above the left racket, a left button is mounted on the left box, and a left controller, a left wireless transmitting plate and a left oscillator are mounted in the left box; a right box is fixedly connected above the right racket, a right button is installed on the right box, and a right controller, a right wireless transmitting plate and a right oscillator are installed inside the right box. According to the utility model, a player does not need to contact the electronic organ of the organ body, and only needs to hold the racket-shaped object to move up and down in the space above the organ body so as to make music sound; a novel playing mode is provided, non-contact operation is achieved, the form is novel, and the interest of learning music can be increased. The unique playing mode is attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic keyboards, in particular to a non-contact keyboard-free electronic keyboard. Background Art

[0002] As a performance instrument, the electronic keyboard can be used to express and communicate emotions, earning it the favor and pursuit of most consumers. However, the vast majority of existing electronic keyboards utilize keyboards to play music, with very few non-contact electronic keyboards available. Most existing electronic keyboards have keyboards and buttons, requiring the player to possess dexterity and professional playing skills to produce beautiful music. Furthermore, these instruments are limited in their performance style, making it difficult for those lacking professional playing skills or finger dexterity to produce beautiful music.

[0003] There are also very few contactless electronic musical instruments in the existing technology. For example, patent application number CN201510112971.X discloses a contactless intelligent electronic musical instrument serving special groups. It specifically discloses the design of several ultrasonic sensors, foot-operated pitch-up buttons and foot-operated pitch-down buttons, etc. The ultrasonic sensors can generate 7 switch signals and play 7 notes. Different scales are generated by stepping on the pitch-up buttons and the pitch-down buttons. It can be seen that several ultrasonic sensors are equivalent to the keyboard of an ordinary electronic piano. The performer still needs to touch the piano body to make music, and it is not truly contactless. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a keyboardless electronic piano, specifically a non-contact keyboardless electronic piano. The player does not need to touch the piano body, but only needs to hold a "racket-shaped object" and move it up and down in the space above the piano body to produce music.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A keyboardless electronic keyboard comprises a keyboard case, a left beater and a right beater;

[0007] A single-chip microcomputer is installed inside the piano case, the single-chip microcomputer is connected to a switch circuit via a wire, and the switch circuit is connected to a left wireless receiving board and a right wireless receiving board via a wire;

[0008] A left box is fixedly connected to the top of the left beater, a left button is installed on the left box, and a left controller, a left wireless transmitter and a left oscillator are installed inside the left box; the left button is connected to the left controller via a wire, and the left controller is connected to the left oscillator and the left wireless transmitter via wires respectively;

[0009] A right box is fixedly connected above the right racket, a right button is installed on the right box, and a right controller, a right wireless transmitter board and a right oscillator are installed inside the right box; the right button is connected to the right controller through a wire, and the right controller is respectively connected to the right oscillator and the right wireless transmitter board through wires.

[0010] As a further technical solution, a left wireless receiver and a right wireless receiver are also installed inside the piano case, and the left wireless receiver and the right wireless receiver are connected to the single-chip microcomputer through wires.

[0011] As a further technical solution, the switching circuit is also connected to an audio amplifier circuit via a wire, and the audio amplifier circuit is connected to a speaker via a wire. Several small holes are opened on the piano case at positions corresponding to the speaker.

[0012] As a further technical solution, a left distance measuring head and a right distance measuring head are further installed inside the piano case, and the left distance measuring head and the right distance measuring head are connected to the single chip microcomputer via wires.

[0013] As a further technical solution, the single chip microcomputer is further connected to a conversion circuit and a plurality of scale circuits via wires.

[0014] As a further technical solution, a left through hole is provided on the piano case, and the left through hole corresponds to the left ranging head; a right through hole is provided on the piano case, and the right through hole corresponds to the right ranging head.

[0015] As a further technical solution, the piano case is made of non-metallic material; the left and right beaters are made of silk, cloth, plastic, metal plate or cardboard; and the left box and right box are made of non-metallic material.

[0016] As a further technical solution, the left wireless transmitting board and the right wireless transmitting board adopt frequency modulation or amplitude modulation transmitting boards; the left wireless receiving board and the right wireless receiving board adopt frequency modulation or amplitude modulation receiving boards.

[0017] As a further technical solution, a left wireless transmitter and a right wireless transmitter are installed inside the left box and the right box respectively.

[0018] As a further technical solution, a left battery and a right battery are installed inside the left box and the right box respectively, for providing a stable voltage to the left beater and the right beater.

[0019] One or more technical solutions of the present invention have the following beneficial effects:

[0020] (1) The present invention is designed to install left and right wireless receiving boards and left and right ranging heads and other components inside the keyboard body, and to design left and right hand-held beaters, and to design left and right wireless transmitting boards and other components in the left and right beaters. This makes it possible for the player to produce music by simply holding a "beat-like object" and moving it up and down in the space above the keyboard body without touching the keyboard body. This provides a novel way of playing, which is contactless and novel in form, and can increase the interest in learning music. The unique playing method is attractive.

[0021] (2) The new electronic keyboard provided by the present invention does not have a complicated keyboard attached to the keyboard body like the traditional electronic keyboard. On the one hand, it allows even people with clumsy fingers or no professional playing ability to play beautiful music. On the other hand, it can reduce the manufacturing process, reduce costs and reduce the failure rate, and has strong market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] Figure 1 This is a schematic structural diagram of a keyboardless electronic organ provided in Example 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of the left beat amplification structure provided in Example 1 of the present utility model;

[0025] Figure 3 A schematic diagram of the right beat amplification structure provided in Example 1 of the present utility model;

[0026] Figure 4 (a) is a schematic diagram of the electrical distribution inside the left box provided in Example 1 of the present invention, and (b) is a schematic diagram of the electrical distribution inside the right box provided in Example 1 of the present invention;

[0027] Figure 5 This is a schematic diagram of the electrical distribution inside the piano case provided in Example 1 of the present utility model;

[0028] Figure 6 This is a schematic structural diagram of a keyboardless electronic piano provided in Example 2 of the present utility model;

[0029] Figure 7 This is a schematic diagram of the left beat amplification structure of Example 2 of the present utility model;

[0030] Figure 8 This is a schematic diagram of the right beat amplification structure of Example 2 of the present utility model;

[0031] Figure 9(a) is a schematic diagram of the electrical distribution inside the left box provided in Example 2 of the present utility model, and (b) is a schematic diagram of the electrical distribution inside the right box provided in Example 2 of the present utility model;

[0032] Figure 10 This is a schematic diagram of the electrical distribution inside the piano case provided in Example 2 of the present utility model;

[0033] Among them: piano case 1, power box 2, left ranging head 3, left wireless receiving board 4, left through hole 5, single-chip microcomputer 6, switching circuit 7, audio amplifier circuit 8, left beater 9, left handle 10, left box 11, left button 12, right button 13, right box 14, right handle 15, right beater 16, speaker 17, right through hole 18, right ranging head 19, right oscillator 21, right controller 22, right wireless transmitting board 23, left oscillator 24, left controller 25, left wireless transmitting board 26, left battery 27, right battery 28, left wireless transmitter 29, right wireless transmitter 30, left wireless receiver 31, right wireless receiver 32, converter 33, conversion circuit 34, mobile phone 35, right wireless receiving board 36, scale circuit 37. DETAILED DESCRIPTION

[0034] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of this embodiment. Unless otherwise specified, all technical and scientific terms used in this embodiment have the same meaning as commonly understood by those skilled in the art to which this embodiment belongs.

[0035] Example 1

[0036] like Figure 1 As shown, this embodiment provides a keyboardless electronic piano, comprising a piano box 1, and left beat 9 and right beat 16 independently arranged outside the box. Figure 5 As shown, a single-chip microcomputer 6 is installed inside the piano case 1, and the single-chip microcomputer 6 is connected to a switching circuit 7 through a wire, and the switching circuit 7 is connected to a left wireless receiving board 4 and a right wireless receiving board 36 through a wire. At the same time, the single-chip microcomputer 6 is also connected to a left wireless receiver 31 and a right wireless receiver 32 through a wire, and the switching circuit 7 is also connected to an audio amplifier circuit 8 through a wire, and the audio amplifier circuit 8 is connected to a speaker 17 through a wire. At the corresponding position of the speaker 17, several small holes are opened on the piano case 1 to facilitate the transmission of sound.

[0037] like Figure 2 As shown, the left beat 9 is connected to a left handle 10, which is convenient for the player to hold the left beat. A left box 11 is fixedly connected to the top of the left beat 9, and a left button 12 is installed on the left box 11. Figure 4As shown in (a), the left box 11 is equipped with a left wireless transmitter 29, a left controller 25, a left wireless transmitter board 26 and a left oscillator 24. The left button is connected to the left controller via a wire, and the left controller is connected to the left oscillator and the left wireless transmitter board via wires. Figure 3 As shown, the right handle 15 is connected to the right beat 16, which is convenient for the player to hold the right beat. The right box 14 is fixedly connected to the top of the right beat 16, and the right button 13 is installed on the right box 14. Figure 4 As shown in (b), a right wireless transmitter 30, a right controller 22, a right wireless transmitting board 23 and a right oscillator 21 are installed inside the right box 14, wherein the right button is connected to the right controller through a wire, and the right controller is connected to the right oscillator and the right wireless transmitting board through wires respectively.

[0038] Combine Figure 4 (a) Figure 4 (b) and Figure 5 The working principle of the left and right beats and the interior of the piano box in the first embodiment is described as follows:

[0039] The left and right beats have the same working principle, and the following is explained by taking the left wireless transmitter 29 and the left wireless receiver 31 as an example: Figure 4 As shown in (a), the left wireless transmitter 29 can use an existing sine wave oscillator, that is, it is composed of an operational amplifier model J8 (LM741) and a peripheral circuit. The operational amplifier J8 (LM741) outputs a sine wave with a fixed amplitude, which transmits a sine wave with a constant power, i.e., a sine signal, after passing through the peripheral circuit. Figure 5 As shown, the left wireless receiver 31 can adopt an existing AM wave receiver, that is, it is composed of a single-chip radio dedicated integrated circuit model J10 (LM7642) and its peripheral circuits, which receives the sinusoidal wave signal emitted by the left wireless transmitter 29, and converts it into pulsating DC after rectification and adds it to the single-chip microcomputer 6.

[0040] The following describes the working principle by taking the left wireless transmitting board 26 and the left wireless receiving board 4 as an example. Figure 4As shown in (a), the left wireless transmitter board 26 is a frequency modulation FM board, and the left wireless transmitter board 26 includes an input terminal L, an output terminal M, a VDD terminal and a GND terminal, the VDD terminal is connected to a 4.5V voltage, and the GND terminal is grounded; the left controller 25 can adopt the existing technology, that is, it is composed of a chip with a model number J2 (74LS08) and a chip with a model number J4 (CD4013), and the left oscillator can adopt the existing oscillation circuit, that is, it is composed of a chip with a model number J6 (CD4069), a capacitor C7 (104 ) and a resistor R5 (2K), specifically: the left end of the capacitor C7 (104) in the left oscillator generates a square wave of about 2000 Hz, which is transmitted to the 3A end of the J2 (74LS08) chip in the left controller, the 3Y end of the J2 (74LS08) chip is connected to the input end L of the left wireless transmitter board, the 3B end of the J2 (74LS08) chip is connected to the 2Q end of the J4 (CD4013) chip, and the 2S and 2R ends of the J4 (CD4013) chip are respectively connected to the left button.

[0041] Specifically: When the left button 12 is not pressed, Figure 4 As shown in (a), the contact on k3 of the left button is at a high level, so the 2R terminal of the J4 (CD4013) chip is at a high level, so the 2Q terminal of the J4 (CD4013) chip is at a low level. Then the 3B terminal of the J2 (74LS08) chip is at a low level. No matter what the state of the 3A terminal of the J2 (74LS08) chip is, the 3y terminal of the J2 (74LS08) chip is always at a low level, so the L terminal of the left wireless transmitter board is always at a low level. For example Figure 5 As shown, since the L end of the left wireless transmitting board is always at a low level, the L end of the left wireless receiving board 4 has no signal output, the transistor G4 (9011) in the switching circuit is cut off, the collector M point of the transistor G4 (9011) presents a high level, the transistor G3 (9011) is saturated and turned on, and the collector of the transistor G3 (9011) presents a low level, that is, the 1A end of the integrated circuit J28 (74LS08) is at a low level, then no matter what state the 1B end is in, 1Y is at a low level, that is, the input end of the audio amplifier circuit 8 does not receive a signal, and the speaker 17 cannot make a sound.

[0042] When the left button 12 is pressed, the lower contact of k3 of the left button is at a high level, then the 2S end of the J4 (CD4013) chip is at a high level, and the 2Q end of the J4 (CD4013) chip is at a high level, so the 3B end of the J2 (74LS08) chip is at a high level, and the state of the 3y end of the J2 (74LS08) chip is the same as 3A. In this way, a square wave of about 2000 Hz is added to the L end of the left wireless transmitter board 26, so that the L end of the left wireless receiver board 4 has a signal output. This square wave passes through the switching circuit, specifically: the square wave is rectified by the diode D1 (SD34) and is connected to the capacitor C9 ( 104) is filtered to form a DC voltage which is added to the base of transistor G4 (9011) through resistor R16 (5K). Transistor G4 (9011) is saturated and turned on. The collector M of transistor G4 (9011) presents a low level. Transistor G3 (9011) is cut off. The collector of transistor G3 (9011) presents a high level. That is, the 1A terminal of integrated circuit J28 (74LS08) is high level. Then the state of 1Y is the same as that of 1B. 1B is the scale signal sent by the 6P0.1 terminal of the single-chip computer. In this way, the input terminal of the audio amplifier circuit 8 receives the signal and the speaker 17 makes a sound.

[0043] In this embodiment, the piano case 1 is made of non-metallic materials to ensure that the electromagnetic waves emitted by the left wireless transmitter 26 and the right wireless transmitter 23 can be received by the left wireless receiver 4 and the right wireless receiver 36; ensure that the electromagnetic waves emitted by the left wireless transmitter 29 and the right wireless transmitter 30 can be received by the left wireless receiver 31 and the right wireless receiver 32; the left beater 9 and the right beater 16 are made of silk, cloth, plastic, metal plate or cardboard material, and the shape can be similar to, but not limited to, a fan; the left box 11 and the right box 14 are made of non-metallic materials to ensure that the electromagnetic waves emitted by the left wireless transmitter 29, the right wireless transmitter 30, the left wireless transmitter 26 and the right wireless transmitter 23 are not shielded, that is, they can be transmitted; the left wireless transmitter 26 and the right wireless transmitter 23 use frequency modulation or amplitude modulation transmitter boards, and the left wireless receiver 4 and the right wireless receiver 36 use frequency modulation or amplitude modulation receiver boards to ensure that there is no signal delay. Bluetooth transmission and reception or wireless switch signal transmission and reception can also be used, the latter two of which have signal delays. The left wireless transmitter 29 and the right wireless transmitter 30 adopt frequency modulation or amplitude modulation transmitters; the left wireless receiver 31 and the right wireless receiver 32 adopt frequency modulation or amplitude modulation receivers.

[0044] When the player uses the keyboardless electronic piano provided in Example 1, he turns on all power switches in the keyboard and the piano box, including Figure 5 K1 and K2 in Figure 6K3 in the figure. First, place the left or right paddle on top of the guitar case. The left or right wireless transmitter emits a sine wave, which is then converted into a pulsating DC current by the left or right wireless receiver and applied to the microcontroller. The microcontroller then measures the average voltage, determined by the distance between the transmitter and receiver, and determines the frequency of the musical scale, outputting it as a square wave. Press the left or right button, and the microcontroller's frequency signal is sent to the audio amplifier circuit, which then produces the corresponding musical scale. The speaker then emits the corresponding musical scale sound. Releasing the left or right button stops the sound. By following these steps repeatedly, you can play music.

[0045] Example 2

[0046] This embodiment provides another keyboardless electronic organ, such as Figure 6 As shown, it includes a piano box 1, and a left beat 9 and a right beat 16 independently arranged outside the box, as shown in FIG. Figure 10 As shown, a single-chip microcomputer 6 is installed inside the musical instrument case 1. The single-chip microcomputer 6 is connected to a switch circuit 7 via wires. The switch circuit 7 is connected to the left wireless receiving board 4 and the right wireless receiving board 36 via wires. The single-chip microcomputer 6 is also connected to the left rangefinder 3 and the right rangefinder 19 via wires. The single-chip microcomputer 6 is also connected to a conversion circuit 34 and several scale circuits 37 via wires. The conversion circuit 34 is connected to an external device via a converter, preferably a mobile phone. In this embodiment, seven sets of scale circuits 37 are provided. The scale circuits are connected to an audio amplifier circuit via wires. The audio amplifier circuit 8 is connected to a speaker 17 via wires. Several small holes are opened in the musical instrument case 1 at the corresponding positions of the speaker 17 to facilitate sound transmission.

[0047] like Figure 7 As shown, the left beat 9 is connected to a left handle 10, which is convenient for the player to hold the left beat. A left box 11 is fixedly connected to the top of the left beat 9, and a left button 12 is installed on the left box 11. Figure 9 As shown in (a), a left controller 25, a left wireless transmitter 26 and a left oscillator 24 are installed inside the left box 11, wherein the left button is connected to the left controller via a wire, and the left controller is connected to the left oscillator and the left wireless transmitter via wires. Figure 8 As shown, the right handle 15 is connected to the right beat 16, which is convenient for the player to hold the right beat. The right box 14 is fixedly connected to the top of the right beat 16, and the right button 13 is installed on the right box 14. Figure 9 As shown in (b), a right controller 22, a right wireless transmitter board 23 and a right oscillator 21 are installed inside the right box 16, wherein the right button is connected to the right controller through a wire, and the right controller is connected to the right oscillator and the right wireless transmitter board through wires respectively.

[0048] In this embodiment, the piano case 1 is provided with a left through hole 5 corresponding to the left range-finding head 3. The piano case 1 is also provided with a right through hole 18 corresponding to the right range-finding head 19. In this embodiment, the piano case, left and right paddles, left and right wireless transmitters, left and right wireless receivers, left and right boxes, and other components are all structurally identical to those in the first embodiment. The specific design can be referenced to the first embodiment and will not be further elaborated upon.

[0049] Combine Figure 9 (a) Figure 9 (b) and Figure 10 The working principle of the left and right beats and the interior of the piano box in the second embodiment is described as follows:

[0050] When the left button 12 is pressed, the G3 collector of the switch circuit 7 presents a high level. This has been described in the first embodiment and will not be repeated here. This high level is applied to the P6.3 port of the single-chip microcomputer 6, causing the single-chip microcomputer 6 to perform a series of operations. Specifically, the working principle is explained by taking the left distance measuring head 3 as an example: when the left paddle 9 is placed at a distance of H mm above the left distance measuring head, the Vout terminal of the left distance measuring head 3 outputs a voltage signal and transmits the voltage signal to the P7.0 port of the single-chip microcomputer 6. The single-chip microcomputer 6 performs data acquisition and obtains a data D (the data D is an integer between 0 and 1024, which is a function of the distance between the paddle and the piano case). "Data" is a term used by computer or microcontroller ADC professionals. ADC stands for "analog-to-digital conversion," also known as "computer data acquisition." ADC converts voltage signals into computer data. The analog (voltage) output of the rangefinder can be connected to a microcontroller for ADC, or the digital output can be connected to the microcontroller for digital transmission. D is found to be a function of H. For example, if H = 25 mm, the microcontroller collects data D = 1006; for H = 96 mm, the microcontroller collects data D = 864; and for H = 173 mm, the microcontroller collects data D = 705. If D is set to less than 1006 and greater than or equal to 864 in the MCU program, the MCU determines that the current scale is C Middle Note 1. If the left button 12 is pressed, the MCU 6 changes the state of port P7.2 from 1 to 0 and sends a MIDI signal with a key value of 60 + t through the TX port. If D is less than 864 and greater than or equal to 705, the MCU determines that the current scale is C Middle Note 2. If the left button 12 is pressed, the MCU 6 changes the state of port P0.0 from 1 to 0 and sends a MIDI signal with a key value of 62 + t through the TX port. "60" is the key value of C Middle Note 1, "62" is the key value of C Middle Note 2, and the meaning of "t" is described in the "Transpose" section below.

[0051] like Figure 10As shown in the figure, the audio amplifier circuit is an LM386 chip. The LM386 chip includes a VCC terminal, an IN terminal, an OUT terminal and two GND terminals. The IN terminal is connected to the scale circuit, and the IN terminal is externally connected to a sliding variable resistor W12. The OUT terminal is connected to the speaker. Figure 10The principle of the scale circuit is explained by taking the scale circuit (37) 1 / 7 in the figure as an example: the scale circuit includes the J14 (CD4069) chip, the J21 (CD4013) chip, etc. A square wave oscillator is formed by the two inverters of the J14 (CD4069) chip, the fixed resistor R103 (10K), the sliding resistor W9 (47K), the fixed resistor R104 (10K), and the capacitor C50 (104). The sliding resistor W9 (47K) is adjusted to make the oscillation frequency 528 Hz, which is the frequency of the C-tuned high note 1. This frequency signal is shaped by the third inverter of chip J14 (CD4069) and applied to the emitter of transistor G12 (3CG21). It is also applied to pin 3 (CP) of the dual D flip-flop of chip J21 (CD4013). After being divided by 2, it is converted to 264 Hz and applied from pin 1 (Q) of chip J21 (CD4013) to the emitter of transistor G13 (3CG21). 264 Hz is the frequency of C-key middle note 1. Both transistors G12 (3CG21) and G13 (3CG21) are transistor switches, controlled by microcontroller pins P7.3 and P7.2, respectively. When the transistors are on, they transmit the scale signal to the audio amplifier circuit, which then produces sound. When they are off, the speaker remains silent. When P7.3 of the single chip computer 6 is set to zero, the base of the transistor G12 (3CG21) is connected to a low potential through the resistor R64, G12 (3CG21) is saturated and turned on, and the resistance between the emitter and the collector is close to zero. The 528 Hz frequency signal is sent to the "A" point through the resistor R63 connected to the collector of G12 (3CG21), that is, to the "A" point of the audio amplifier circuit (8), and then to the IN terminal of the LM386 chip through the sliding variable resistor W12. The speaker then emits a C-tune high pitch 1 sound. For another example, when P7.2 of the single-chip computer 6 is set to zero, the base of G13 (3CG21) is connected to a low potential through the resistor R66, G13 (3CG21) is saturated and turned on, and the resistance between the emitter and the collector is close to zero. The 264 Hz frequency signal is sent to the "A" point through the resistor R65 connected to the collector of G13 (3CG21), that is, to the "A" point of the audio amplifier circuit (8), and then to the IN terminal of the LM386 chip through the sliding variable resistor W12. The speaker then emits the sound of the C-key middle note 1. The rest of the scale circuit 37 is similar. There are 7 groups of scale circuits, each group emits 2 scales, and a total of 14 scales are emitted. These 14 scales cover two octaves without semitones. Of course, 14 groups, 21 groups, etc. can be set as needed. All scales (14 in this embodiment) are generated when the power switch of the electronic keyboard is turned on. The single-chip computer selects which scale as needed, and the scale will sound. In the second embodiment, the part played from the mobile phone 35 does not require a scale circuit. When playing from the mobile phone 35, Figure 10 The switch K17 in the circuit breaker should be in the off position.

[0052] The electronic keyboard in Example 1 is a traditional instrument, and the part played from the speaker 17 in Example 2 is also a traditional instrument. They do not have a transposition function. The part played from the mobile phone 35 in Example 2 is a MIDI instrument and has a transposition function. The transposition principle is described below:

[0053] 1. Setting of t: Figure 10 The upper left part of the MCU has 12 shift switches, K5_K9, K10_K16. When the K5 switch is open, a +3.3V DC voltage is applied to the P4.5 port of the microcontroller (6) through the resistor R43, and the port is at a high level. When the K5 switch is closed, the P4.5 port of the microcontroller 6 is connected to a low level, and the port value is zero. When programming the microcontroller, it is stipulated that when the P4.5 port is zero and the other 11 ports for shifting are all 1, the t value is set to 0. When the K6 switch is closed, the P4.6 port of the microcontroller 6 is connected to a low level, and the port value is zero. When programming the microcontroller, it is stipulated that when the P4.6 port is zero and the other 11 ports for shifting are all 1, the t value is set to 1. The rest are similar.

[0054] 2. Transposition: Place the left paddle 9 approximately 25mm and less than or equal to 96mm above the left rangefinder 3. If t = 0, the key value is 60, which is the key value for C Middle Note 1, and the phone will play C Middle Note 1. If t = 1, the key value is 61, which is the key value for #C Middle Note 1, and the phone will play #C Middle Note 1. If t = 2, the key value is 62, which is the key value for D Middle Note 1, and the phone will play D Middle Note 1, and so on. Transposition means that one fingering can play 12 different keys. For a player, mastering all 12 fingerings requires not just 12 times, but dozens of times more effort than mastering just one. Furthermore, this electronic keyboard's transposition operation is exceptionally fast, greatly enhancing performance.

[0055] When playing the keyboardless electronic keyboard provided in Example 2, a performer first places the left or right beater on top of the keyboard case. The left or right distance sensor outputs a voltage signal that is transmitted to the single-chip microcomputer. The microcontroller collects the voltage generated by the distance between the distance sensor and the beater and determines the frequency signal of the musical scale at that time, such as middle note "1", middle note "3", treble note "5", and so on. Pressing the left button causes the microcontroller to reset the corresponding ports, such as p7.2, p0.2, and p0.0, to zero. The scale circuit connected to the zeroed port is then connected, and the signal is then transmitted to the audio amplifier circuit, causing the speaker to produce the sound of the scale. When the left or right button is released, the sound stops.

[0056] In this embodiment, the method of using the speaker to play the sound is as follows: turn on all power switches in the beat and the piano box, including Figure 9 K1 and K2 in Figure 10K3 in. Figure 10 Put the K17 switch in the on position. The following playing method is exactly the same as that in Example 1.

[0057] In this embodiment, the method of using a mobile phone to play sound is as follows: plug one end of the converter (33) into the data / charging (USB) port of the mobile phone and the other end into the 5-core port on the keyboard case. Turn on all power switches in the keyboard and keyboard case, including Figure 9 K1 and K2 in Figure 10 K3 in. Figure 10 Put the K17 switch in the off position. Figure 10 One of the switches K5 to K16 (the remaining 11 switches are all flipped down. For example, if you want to play in the key of D, flip switch K7 up, and the remaining 11 switches are all flipped down. Open the app on your phone, which is "Portable Band" for Android phones and "GarageBand" for Apple phones. Select the timbre of the music you want to play on your phone, such as piano, erhu, flute, saxophone, trumpet, etc. The subsequent playing operation is exactly the same as in Example 1. When you need to change the key in the middle of playing a song, just flip the switch of the original key down and flip the switch of the key you want to change up. It is very quick and convenient.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A keyboardless electronic organ, characterized in that: include: A piano case; a left beat and a right beat are provided above the piano case; A single-chip microcomputer is installed inside the piano case, the single-chip microcomputer is connected to a switch circuit via a wire, and the switch circuit is connected to a left wireless receiving board and a right wireless receiving board via a wire; A left box is fixedly connected to the top of the left beater, a left button is installed on the left box, and a left controller, a left wireless transmitter and a left oscillator are installed inside the left box; the left button is connected to the left controller via a wire, and the left controller is connected to the left oscillator and the left wireless transmitter via wires respectively; A right box is fixedly connected above the right racket, a right button is installed on the right box, and a right controller, a right wireless transmitter board and a right oscillator are installed inside the right box; the right button is connected to the right controller through a wire, and the right controller is respectively connected to the right oscillator and the right wireless transmitter board through wires.

2. A keyboardless electronic organ according to claim 1, characterized in that: A left wireless receiver and a right wireless receiver are also installed inside the piano box, and the left wireless receiver and the right wireless receiver are connected to the single chip microcomputer through wires.

3. The keyboardless electronic organ according to claim 1, wherein: The switch circuit is also connected to an audio amplifier circuit via a wire, and the audio amplifier circuit is connected to a speaker via a wire. Several small holes are opened on the piano case at positions corresponding to the speakers.

4. The keyboardless electronic organ according to claim 1, wherein: A left distance measuring head and a right distance measuring head are also installed inside the piano box, and the left distance measuring head and the right distance measuring head are connected to the single chip microcomputer through wires.

5. The keyboardless electronic organ according to claim 4, wherein: The single chip microcomputer is also connected with a conversion circuit and a plurality of scale circuits via wires.

6. The keyboardless electronic organ according to claim 4, wherein: A left through hole is provided on the piano case, and the left through hole corresponds to the left distance measuring head; a right through hole is provided on the piano case, and the right through hole corresponds to the right distance measuring head.

7. The keyboardless electronic organ according to claim 1, wherein: The piano case is made of non-metallic material; the left and right beaters are made of silk, cloth, plastic, metal plate or cardboard; and the left box and right box are made of non-metallic material.

8. The keyboardless electronic organ according to claim 1, wherein: The left wireless transmitting board and the right wireless transmitting board adopt frequency modulation or amplitude modulation transmitting boards; the left wireless receiving board and the right wireless receiving board adopt frequency modulation or amplitude modulation receiving boards.

9. The keyboardless electronic organ according to claim 1, wherein: A left wireless transmitter and a right wireless transmitter are installed inside the left box and the right box respectively.

10. The keyboardless electronic organ according to claim 1, wherein: The left box and the right box are respectively equipped with a left battery and a right battery for providing a stable voltage to the left beater and the right beater.

Images