Electronic Chinese zither based on intelligent teaching, intelligent teaching method and device and medium
By installing a cantilever arm and strain gauge sensors on the soundboard of the guzheng, changes in string tension are detected in real time and pitch is calculated. This solves the problem that electronic guzheng cannot control the force of pressing the strings, provides intuitive feedback on pitch, and reduces the difficulty of learning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-13
- Publication Date
- 2026-04-03
AI Technical Summary
The existing electronic guzheng cannot effectively control the pressure applied to the strings, making it difficult for players to judge whether the pressure is in tune, thus increasing the difficulty of learning.
A cantilever arm and strain gauge sensors are installed on the soundboard of the guzheng to detect changes in string tension in real time. The current pitch is calculated by mapping the string tension to the pitch, and the feedback is given to the performer through visual display or voice broadcast.
Through real-time detection and feedback, performers can intuitively perceive pitch accuracy, reducing the difficulty of learning and improving learning efficiency.
Smart Images
Figure CN121789616A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to musical instruments, and more particularly to an electronic guzheng based on intelligent teaching, an intelligent teaching method, a device, and a medium. Background Technology
[0002] The guzheng boasts a rich array of playing techniques, particularly the left-hand techniques such as vibrato, glissando, pressing, and sliding, which rely heavily on the player's precise control of string tension to alter pitch. However, beginners often struggle to master the pressure applied to the strings and understand the relationship between pressure and pitch changes. This makes it difficult to judge whether the pressure is applied correctly, often forcing them to rely on auditory exploration. This necessitates professional instruction, hindering independent learning and making the process quite challenging. Summary of the Invention
[0003] In order to overcome the shortcomings of the existing technology, one of the objectives of this invention is to provide an electronic guzheng based on intelligent teaching, which can solve the problem that the existing electronic guzheng cannot control the force of the hand pressing the strings, thus making it impossible to know whether the current pressing is in tune, which makes the learning of electronic guzheng difficult.
[0004] The second objective of this invention is to provide an intelligent teaching method for electronic guzheng, which can solve the problem that existing electronic guzheng cannot control the force of hand pressing the strings, thus making it impossible to know whether the current pressing is in tune, making it difficult to learn electronic guzheng.
[0005] The third objective of this invention is to provide an intelligent teaching device for electronic guzheng, which can solve the problem that existing electronic guzheng cannot control the force of hand pressing the strings, thus making it impossible to know whether the current pressing is in tune, making it difficult to learn electronic guzheng.
[0006] The fourth objective of this invention is to provide a computer-readable storage medium that can solve the problem that existing electronic guzheng cannot control the force of hand pressing the strings, thus making it impossible to know whether the current pressing is in tune, which makes learning electronic guzheng difficult.
[0007] One of the objectives of this invention is achieved through the following technical solution: The electronic guzheng based on intelligent teaching includes a guzheng body, multiple cantilever arms, and an intelligent teaching system; the multiple cantilever arms are spaced apart along one end of the soundboard of the guzheng body, and each cantilever arm corresponds to one string. One end of each cantilever arm is fixed to one end of the soundboard of the guzheng body, and the other end extends away from the soundboard to form a free end; each cantilever arm has a through-hole for stringing, and one end of the corresponding string passes through the upper end of the through-hole of the corresponding cantilever arm and is fixed in the corresponding through-hole; each cantilever arm has a strain gauge sensor attached near the soundboard; each strain gauge sensor is connected to the guzheng intelligent teaching system and is used to send real-time detection data to the guzheng intelligent teaching system when the corresponding string is pressed during the electronic guzheng performance; The Guzheng intelligent teaching system is used to determine the real-time tension change of the corresponding string based on real-time detection data, initial data from the strain gauge sensor, and the correspondence between the change in the strain gauge sensor's detection data and the change in the tension of the corresponding string. Then, based on the real-time tension change of the corresponding string and the mapping relationship between string tension and pitch, the system determines the current pitch and displays the corresponding visual effects on the visualization display interface based on the current pitch.
[0008] Furthermore, the string hole is a stepped through hole; the stepped through hole includes an upper through hole and a lower through hole, and the diameter of the upper through hole is smaller than the diameter of the lower through hole; the diameter of the upper through hole matches the size of the string.
[0009] Furthermore, the surface of the strain sensor is coated with a protective adhesive.
[0010] Furthermore, the step of determining the current pitch based on the real-time tension change of the corresponding string and the mapping relationship between string tension and pitch specifically includes: determining the pitch offset based on the real-time tension change of the corresponding string and the mapping relationship between string tension and pitch, and then determining the current pitch based on the pitch offset; wherein, the mapping relationship between string tension and pitch is shown in formula (1): Pitch offset = (E / V_max_range) × P_max; Where E is the effective control quantity of the strain gauge sensor, and E = ΔV × k; ΔV is the real-time tension change of the string; k is the sensitivity coefficient, which is derived from the working mode of the electronic guzheng; V_max_range is the maximum threshold value of the control quantity of the strain gauge sensor; P_max is the maximum threshold value for pitch deviation of the electronic guzheng.
[0011] Furthermore, the electronic guzheng has two operating modes: an adult mode and a children's mode.
[0012] The second objective of this invention is achieved by the following technical solution: A smart teaching method for an electronic guzheng, applied to an electronic guzheng based on smart teaching as one of the objectives of this invention, the smart teaching method comprising: Initialization steps: Initialize the electronic guzheng and acquire initial data from the strain gauge sensor; Performance steps: During the electronic guzheng performance, real-time detection data from strain gauge sensors is acquired and combined with the initial data from strain gauge sensors, the string tension change, and the matching relationship between the data change from strain gauge sensors to obtain the real-time string tension change. The current pitch is then determined based on the real-time string tension change and the mapping relationship between string tension and pitch. Visualization steps: When the current pitch reaches the corresponding pitch, a visual effect for the corresponding pitch is generated on the visualization display screen and the pitch name is displayed, or the corresponding pitch is announced by voice.
[0013] Furthermore, the step of deriving the pitch offset based on the real-time change in string tension and the mapping relationship between string tension and pitch specifically includes: deriving the pitch offset based on the real-time change in string tension and the mapping relationship between string tension and pitch, and then deriving the current pitch based on the pitch offset.
[0014] The relationship between string tension and pitch is shown in formula (1): Pitch offset = (E / V_max_range) × P_max; Where E is the effective control quantity of the strain gauge sensor, and E = ΔV × k; ΔV is the real-time tension change of the string; k is the sensitivity coefficient, which is derived from the working mode of the electronic guzheng. V_max_range is the maximum threshold value of the control quantity of the strain gauge sensor; P_max is the maximum threshold value for pitch deviation of the electronic guzheng.
[0015] The third objective of this invention is achieved by the following technical solution: An intelligent teaching device for an electronic guzheng includes a memory and a processor. The memory stores an intelligent teaching program that runs on the processor. The intelligent teaching program is a computer program. When the processor executes the intelligent teaching program, it implements the steps of an intelligent teaching method for an electronic guzheng as described in the second objective of this invention.
[0016] The fourth objective of this invention is achieved by the following technical solution: A computer-readable storage medium storing an intelligent teaching program thereon, the intelligent teaching program being a computer program, wherein when the intelligent teaching program is executed by a processor, it implements the steps of an intelligent teaching method for an electronic guzheng as described in the second objective of this invention.
[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention installs a string tension detection device on one side of the instrument's soundboard. This device converts the string tension into deformation data of the cantilever arm, thereby determining the change in string tension during the performance of the electronic guzheng. Based on the change in string tension and the mapping relationship between string tension and pitch, the current pitch is determined and displayed to the performer through visual effects. This allows the performer to intuitively perceive the pitch of the performance, greatly reducing the learning difficulty for the performer. Attached Figure Description
[0018] Figure 1 This invention provides a structural schematic diagram of an electronic guzheng based on intelligent teaching. Figure 2 for Figure 1 Enlarged view of A in the image; Figure 3 for Figure 1 A schematic diagram of the through-hole structure of the cantilever arm in the middle; Figure 4 A schematic diagram of the structure of an electronic guzheng based on intelligent teaching in adult mode, provided by the present invention; Figure 5 A schematic diagram of the structure of an electronic guzheng based on intelligent teaching in children's mode, provided by the present invention; Figure 6 A flowchart of an intelligent teaching method for an electronic guzheng provided by the present invention.
[0019] In the diagram: 1. Instrument panel; 11. Bridge pillars; 12. First bridge; 13. Second bridge; 2. Strings; 3. Cantilever arm; 31. Strain gauge sensor; 32. Fourth string hole. Detailed Implementation
[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0021] Example 1 like Figures 1-5 As shown, the present invention provides an electronic guzheng based on visual pitch display, including: a guzheng body, multiple cantilever arms 3 and a guzheng intelligent teaching system.
[0022] Among them, such as Figure 1As shown, the main body of a guzheng generally includes a soundboard 1, a first bridge 12, a second bridge 13, bridges 11, and strings 2. For ease of illustration, the strings 2 inside the guzheng in this embodiment are not fully shown. Generally, there are 21 strings 2 in a guzheng. The first bridge 12 and the second bridge 13 are fixedly located near the two ends of the soundboard 1, and each of the first bridge 12 and the second bridge 13 has multiple first string holes and multiple second string holes. The number of first string holes and second string holes is the same, and they are arranged one-to-one along the length of the soundboard 1. Each string passes through the first string hole of the first bridge 12 and the second string hole of the second bridge 13 in sequence, so that multiple strings are spaced apart on the soundboard 1. At the same time, there are multiple bridges 11, each corresponding to one string. The bridges 11 are located on the soundboard 1, and the middle part of each string 2 passes through the third string hole on the corresponding bridge 11.
[0023] Multiple cantilever arms 3 are fixed at one end to one end of the soundboard 1 and are spaced apart along the end of the soundboard 1. Each cantilever arm 3 is connected to a string 2. That is, as shown... Figure 1 As shown, for each string, the first end of the string is fixed to the soundboard 1 of the instrument, and the second end passes through the first string hole of the first bridge 12, the third string hole of the bridge 11, and the second string hole of the second bridge 13 in sequence, and then connects to the corresponding cantilever arm 3.
[0024] More specifically, such as Figure 2 As shown, one end of each cantilever arm 3 is fixed to one end of the soundboard 1, and the other end extends away from the soundboard 1 to form the free end of the cantilever arm 3. Each cantilever arm 3 is provided with a fourth string hole 32 that runs vertically through it. The second end of the corresponding string 2 passes through the fourth string hole 32 of the corresponding cantilever arm 3 and is fixed in the fourth string hole 32.
[0025] Each cantilever arm 3 is equipped with a strain gauge sensor 31. More preferably, the strain gauge sensor 31 is located on the cantilever arm 3 and close to the instrument panel 1. When the electronic guzheng is played, the corresponding string 2 is pressed, causing tension in the string 2, which in turn pulls on the corresponding cantilever arm 3, causing deformation. In addition, the pitch of the electronic guzheng is related to the tension of the string 2. Therefore, this invention can detect the string tension by detecting the deformation of the cantilever arm 3, thereby calculating the pitch and judging the intonation of the electronic guzheng. Combined with the visual interface of the intelligent teaching system, the current intonation is displayed to the performer, allowing the performer to see the intonation more intuitively. This eliminates the need for the performer to subjectively judge whether the intonation is achieved based on their own experience or hearing, greatly reducing the playing threshold of the electronic guzheng.
[0026] Furthermore, the strain gauge sensor 31, also known as a resistive strain gauge sensor, is a measuring device with the resistive strain gauge sensor 31 as its core component. It detects the strain signal generated by the deformation of an object under force and converts it into a change in resistance to measure parameters such as force, torque, and pressure. Therefore, this invention connects the strain gauge sensor 31 to the Guzheng intelligent teaching system so that during the electronic Guzheng performance, when the corresponding string 2 is pressed, it acquires real-time detection data from the strain gauge sensor 31 and sends it to the Guzheng intelligent teaching system. In this way, the Guzheng intelligent teaching system is also used to deduce the real-time tension change of the string based on the real-time detection data and the initial value of the strain gauge sensor 31, and then, based on the real-time tension change of string 2 and the mapping relationship between string tension and pitch, deduce the current pitch, and display the corresponding visual effects on the visualization display interface based on the current pitch. Specifically, when the electronic Guzheng is turned on or tuned, since string 2 itself has a certain tension, the Guzheng intelligent teaching system acquires its initial data through the strain gauge sensor 31 and stores it as a reference value in the system.
[0027] During the performance of the electronic guzheng, the tension of string 2 changes due to being pressed. The guzheng intelligent teaching system calculates the amount of tension change in real time based on the real-time detection data of strain gauge sensor 31 and the initial data. Based on the working principle of strain gauge sensor 31, the amount of tension change in the string is linearly related to the change in the digital signal output by strain gauge sensor 31, that is: ΔTension≈α×ΔADC.
[0028] Where α is the inherent scaling factor of the strain gauge sensor 31.
[0029] ΔADC represents the change in detection data received by the strain gauge sensor 31 from the Guzheng intelligent teaching system. That is: ΔV = V_curr - V_init, and ΔV > 0; where V_curr is the real-time detection data of the strain gauge sensor 31, and V_init is the initial data of the strain gauge sensor 31.
[0030] ΔTension is the change in tension of string 2.
[0031] After obtaining the real-time tension change of string 2, the Guzheng intelligent teaching system also calculates the current pitch offset based on the mapping relationship between string tension and pitch, and then obtains the current pitch accuracy based on the current pitch offset and the reference pitch. The mapping relationship between string 2 tension and pitch is shown in formula (1): Pitch offset = (E / V_max_range) × P_max (1).
[0032] Wherein, V_max_range is the maximum threshold of the control quantity of the strain gauge sensor 31, for example, its corresponding pitch is: major second.
[0033] P_max is the maximum threshold value for pitch deviation of the electronic guzheng.
[0034] E is the effective control quantity of the sensor, and E = ΔV × k; ΔV is the real-time tension change of string 2; k is the sensitivity coefficient, which is derived from the working mode of the electronic guzheng.
[0035] More specifically, because adults and children apply different pressure with their fingers, children will find it more difficult to play at the same pitch. Therefore, to better accommodate players with different pressure levels, this invention introduces sensitivity to adjust the effective control value E of the sensor. For example, the guzheng in this embodiment can be set to an adult mode and a child mode, where the sensitivity coefficient for adult mode is set to 1, and the sensitivity coefficient for child mode is set to 2. Thus, as... Figure 4 and Figure 5 In area B shown, when children play, they only need to press the string 2 to half the pressure of an adult to achieve the same pitch as an adult. This solves the problem of insufficient finger pressure causing the pitch to be consistently off. This invention improves the system's sensitivity to adapt to the use of players with different pressing pressure, thus providing a better playing experience.
[0036] More preferably, such as Figure 3 As shown, the fourth string hole 32 on each cantilever arm 3 is a stepped through hole. The stepped through hole includes an upper through hole and a lower through hole, with the diameter of the lower through hole being larger than that of the upper through hole. A fixing component is installed at the end of the string 2, which is engaged in the lower through hole to secure the string 2. This can be achieved by knotting the end of the string 2 or installing a retaining bead, thus securing the string 2 within the stepped through hole. When the string 2 is secured by knotting the end, screws or bobbins are unnecessary, greatly simplifying the string changing process and ensuring the absolute constancy of the lever arm of the string 2. Furthermore, the diameter of the upper through hole in the stepped through hole matches the size of the string 2 to ensure that only the string can pass through the upper through hole.
[0037] Furthermore, once the pitch offset is calculated, the current pitch can be determined based on this offset and then displayed in the visualization system. When the preset pitch is reached, a flashing indicator will alert the performer. For example, different colored progress bars can be set for different fingerings: red for thumb fingering, green for index fingering, blue for middle fingering, and purple for ring fingering. When the thumb is required for playing, the Guzheng intelligent teaching system controls the corresponding LED lights to illuminate according to the color of the corresponding visual feedback bar, and displays the corresponding light effects based on the current pitch. At this time, the player begins to play with their thumb. As the player presses the corresponding string 2, the cantilever arm 3 deforms, and the Guzheng intelligent teaching system calculates the change in string tension 2 based on the deformation data of the strain gauge sensor 31. Then, it calculates the current pitch offset based on the mapping relationship between the change in string tension 2 and pitch. Thus, based on the pitch calculated previously or the initial pitch, the Guzheng intelligent teaching system adjusts the light effects of the corresponding string according to the real-time pitch calculation. When the pitch reaches the corresponding pitch, the string light effects are displayed in a flashing form, and the name of the corresponding pitch is given. In this way, the player does not need to judge the pitch by listening, but can directly know the pitch of their playing through the visual interface in the Guzheng intelligent teaching system, thus lowering the threshold for Guzheng playing.
[0038] Furthermore, when adjusting the lighting effects of the strings to change pitch, this invention can display the visual effects of the current pitch by changing the saturation, display size, glow intensity, brightness, or luminance of the light, allowing the performer to see them. Simultaneously, when the desired pitch is reached, such as a minor second, a flashing light effect can be displayed through a visual feedback bar, along with the name of the current pitch. This makes pitch visualization easier, solving the problem that performers cannot perceive string pressure and therefore cannot perceive pitch, requiring teacher assistance in instruction. This significantly reduces the learning difficulty of the electronic guzheng and improves the user experience.
[0039] More preferably, the surface of the strain sensor 31 is coated with a protective adhesive to protect the strain sensor 31.
[0040] Example 2 Based on Embodiment 1, the present invention also provides an intelligent teaching method for an electronic guzheng, applicable to Embodiment 1 provided by the present invention, namely an electronic guzheng based on intelligent teaching. Figure 6 As shown, the intelligent teaching method includes: Step S1: Initialize the electronic guzheng and acquire the initial data from the strain gauge sensor.
[0041] For example, after the electronic guzheng is turned on or tuned, it is initialized. At this time, the initial data of the strain gauge sensor is recorded by the guzheng intelligent teaching system, and then the initial tension of the string is recorded so as to use it as a reference value to calculate the pitch.
[0042] Step S2: During the electronic guzheng performance, real-time detection data from the strain gauge sensor is acquired and combined with the initial data from the strain gauge sensor, the matching relationship between the string tension change and the data change of the strain gauge sensor, to obtain the real-time string tension change. The current pitch is then determined based on the real-time string tension change and the mapping relationship between string tension and pitch.
[0043] Specifically, based on the working principle of the strain gauge sensor, the matching relationship between the change in string tension and the change in data of the strain gauge sensor can be obtained. In this way, the real-time change in data of the strain gauge sensor can be obtained from the real-time detection data and the initial data of the strain gauge sensor, and then the change in string tension can be obtained.
[0044] At the same time, the pitch offset is calculated based on the change in string tension and the mapping relationship between string tension and pitch, thereby obtaining the current pitch accuracy.
[0045] Step S3: When the current pitch reaches the corresponding pitch, generate the visual effect of the corresponding pitch through the visualization display screen and display the pitch name or announce the corresponding pitch through voice.
[0046] The present invention also displays pitch accuracy to the performer with visual effects by combining a visual teaching system or a visual display screen, making the performer more intuitive about the pitch accuracy of their own playing and improving the performer's experience.
[0047] Furthermore, the step S2 of obtaining the current pitch based on the real-time change in string tension and the mapping relationship between string tension and pitch specifically includes: obtaining the pitch offset based on the real-time change in string tension and the mapping relationship between string tension and pitch, and then obtaining the current pitch based on the pitch offset.
[0048] The relationship between string tension and pitch is shown in formula (1): Pitch offset = (E / V_max_range) × P_max (1); Where E is the effective control quantity of the sensor, and E=ΔV×k; ΔV is the real-time tension change of the string; k is the sensitivity coefficient, which is derived from the working mode of the electronic guzheng.
[0049] Specifically, the electronic guzheng has two working modes: an adult mode and a children's mode, with different sensitivity coefficients for each mode.
[0050] V_max_range is the maximum threshold value of the control quantity of the strain gauge sensor; P_max is the maximum threshold value for pitch deviation of the electronic guzheng.
[0051] In other words, when the electronic guzheng is being played, the guzheng working mode of the intelligent teaching system needs to be set to the corresponding working mode according to the actual needs of the performer, so as to match the corresponding sensitivity coefficient in the system for the calculation of pitch offset.
[0052] Example 3 An intelligent teaching device for an electronic guzheng includes a memory and a processor. The memory stores an intelligent teaching program that runs on the processor. The intelligent teaching program is a computer program. When the processor executes the intelligent teaching program, it performs the following steps: Initialization steps: Initialize the electronic guzheng and acquire initial data from the strain gauge sensor; Performance steps: During the electronic guzheng performance, real-time data from the strain gauge sensor is acquired and combined with the initial data of the strain gauge sensor, the string tension change and the data change of the strain gauge sensor to obtain the real-time string tension change. Based on the real-time string tension change and the string tension-pitch mapping relationship, the pitch offset is obtained. Then, the pitch offset is used to determine whether the corresponding pitch is reached. Visualization steps: When the pitch offset reaches the corresponding pitch, a visual effect corresponding to the pitch is generated on the visualization display screen and the pitch name is displayed, or the corresponding pitch is announced by voice.
[0053] Furthermore, the step of deriving the pitch offset based on the real-time string tension change and the string tension-pitch mapping relationship specifically includes: obtaining the sensitivity coefficient of the strain gauge sensor according to the working mode of the electronic guzheng, and deriving the pitch offset based on the sensitivity coefficient of the strain gauge sensor, the real-time string tension change, and the string tension-pitch mapping relationship; wherein, the string tension-pitch mapping relationship is shown in formula (1): Pitch offset = (E / V_max_range) × P_max (1); Where E is the effective control quantity of the sensor, and E = ΔV × k; ΔV is the real-time tension change of the string; k is the sensitivity coefficient, which is derived from the working mode of the electronic guzheng; V_max_range is the maximum threshold value of the control quantity of the strain gauge sensor; P_max is the maximum threshold value for pitch deviation of the electronic guzheng. Example
[0054] Based on Embodiment 2, the present invention also provides an embodiment: a computer-readable storage medium storing an intelligent teaching program thereon, wherein the intelligent teaching program is a computer program, and when executed by a processor, the intelligent teaching program performs the following steps: Initialization steps: Initialize the electronic guzheng and acquire initial data from the strain gauge sensor; Performance steps: During the electronic guzheng performance, real-time data from the strain gauge sensor is acquired and combined with the initial data of the strain gauge sensor, the string tension change and the data change of the strain gauge sensor to obtain the real-time string tension change. Based on the real-time string tension change and the string tension-pitch mapping relationship, the pitch offset is obtained. Then, the pitch offset is used to determine whether the corresponding pitch is reached. Visualization steps: When the pitch offset reaches the corresponding pitch, a visual effect corresponding to the pitch is generated on the visualization display screen and the pitch name is displayed, or the corresponding pitch is announced by voice.
[0055] Furthermore, the calculation of pitch offset based on the real-time string tension change and the string tension-pitch mapping relationship specifically includes: obtaining the sensitivity coefficient of the strain gauge sensor according to the working mode of the electronic guzheng, and calculating the pitch offset based on the sensitivity coefficient of the strain gauge sensor, the real-time string tension change, and the string tension-pitch mapping relationship; wherein, the string tension-pitch mapping relationship is shown in formula (1): Pitch offset = (E / V_max_range) × P_max (1); Where E is the effective control quantity of the sensor, and E = ΔV × k; ΔV is the real-time tension change of the string; k is the sensitivity coefficient, which is derived from the working mode of the electronic guzheng; V_max_range is the maximum threshold value of the control quantity of the strain gauge sensor; P_max is the maximum threshold value for pitch deviation of the electronic guzheng.
[0056] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.
Claims
1. An electronic guzheng based on intelligent teaching, characterized in that: The electronic guzheng includes a guzheng body, multiple cantilever arms, and a guzheng intelligent teaching system; the multiple cantilever arms are spaced apart along one end of the soundboard of the guzheng body, and each cantilever arm corresponds to one string; One end of each cantilever arm is fixed to one end of the soundboard of the guzheng body, and the other end extends away from the soundboard to form a free end; each cantilever arm has a through-hole for stringing, and one end of the corresponding string passes through the upper end of the through-hole of the corresponding cantilever arm and is fixed in the corresponding through-hole; each cantilever arm has a strain gauge sensor attached near the soundboard; each strain gauge sensor is connected to the guzheng intelligent teaching system and is used to send real-time detection data to the guzheng intelligent teaching system when the corresponding string is pressed during the electronic guzheng performance; The Guzheng intelligent teaching system is used to determine the real-time tension change of the corresponding string based on real-time detection data, initial data from the strain gauge sensor, and the correspondence between the change in the strain gauge sensor's detection data and the change in the tension of the corresponding string. Then, based on the real-time tension change of the corresponding string and the mapping relationship between string tension and pitch, the system determines the current pitch and displays the corresponding visual effects on the visualization display interface based on the current pitch.
2. The electronic guzheng based on intelligent teaching as described in claim 1, characterized in that, The string hole is a stepped through hole; the stepped through hole includes an upper through hole and a lower through hole, and the diameter of the upper through hole is smaller than the diameter of the lower through hole; the diameter of the upper through hole matches the size of the string.
3. The electronic guzheng based on intelligent teaching according to claim 1, characterized in that, The surface of the strain gauge sensor is coated with a protective adhesive.
4. The electronic guzheng based on intelligent teaching as described in claim 1, characterized in that, The process of determining the current pitch based on the real-time tension change of the corresponding string and the mapping relationship between string tension and pitch specifically includes: determining the pitch offset based on the real-time tension change of the corresponding string and the mapping relationship between string tension and pitch, and then determining the current pitch based on the pitch offset; wherein, the mapping relationship between string tension and pitch is shown in formula (1): Pitch offset = (E / V_max_range) × P_max; Where E is the effective control quantity of the strain gauge sensor, and E = ΔV × k; ΔV is the real-time tension change of the string; k is the sensitivity coefficient, which is derived from the working mode of the electronic guzheng. V_max_range is the maximum threshold value of the control quantity of the strain gauge sensor; P_max is the maximum threshold value for pitch deviation of the electronic guzheng.
5. The electronic guzheng based on intelligent teaching according to claim 1, characterized in that, The electronic guzheng has two working modes: an adult mode and a children's mode.
6. A smart teaching method for an electronic guzheng, applied to an electronic guzheng based on smart teaching as described in any one of claims 1-4, characterized in that, The intelligent teaching method includes: Initialization steps: Initialize the electronic guzheng and acquire initial data from the strain gauge sensor; Performance steps: During the electronic guzheng performance, real-time detection data from strain gauge sensors is acquired and combined with the initial data from strain gauge sensors, the string tension change, and the matching relationship between the data change from strain gauge sensors to obtain the real-time string tension change. The current pitch is then determined based on the real-time string tension change and the mapping relationship between string tension and pitch. Visualization steps: When the current pitch reaches the corresponding pitch, a visual effect for the corresponding pitch is generated on the visualization display screen and the pitch name is displayed, or the corresponding pitch is announced by voice.
7. The intelligent teaching method for an electronic guzheng according to claim 6, characterized in that, The method of deriving the pitch offset based on the real-time change in string tension and the mapping relationship between string tension and pitch further includes: deriving the pitch offset based on the real-time change in string tension and the mapping relationship between string tension and pitch, and then deriving the current pitch based on the pitch offset.
8. The relationship between string tension and pitch is shown in formula (1): Pitch offset = (E / V_max_range) × P_max; in, E is the effective control quantity of the strain gauge sensor, and E = ΔV × k; ΔV is the real-time tension change of the string; k is the sensitivity coefficient, which is derived from the working mode of the electronic guzheng. V_max_range is the maximum threshold value of the control quantity of the strain gauge sensor; P_max is the maximum threshold value for pitch deviation of the electronic guzheng.
9. An intelligent teaching device for an electronic guzheng, comprising a memory and a processor, wherein the memory stores an intelligent teaching program that runs on the processor, the intelligent teaching program being a computer program, characterized in that, When the processor executes the intelligent teaching program, it implements the steps of the intelligent teaching method for an electronic guzheng as described in any one of claims 6-7.
10. A computer-readable storage medium having an intelligent teaching program stored thereon, characterized in that, The intelligent teaching program is a computer program, and when the intelligent teaching program is executed by the processor, it implements the steps of the intelligent teaching method for an electronic guzheng as described in any one of claims 6-7.