A variable resistor-capacitor circuit module
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2026-08-14
AI Technical Summary
但滑动变阻器通常占用更多的空间，这在追求最小化外形尺寸的紧凑型电子设备设计中可能构成限制，其较大的占用空间可能会对整体设备的便携性和集成度产生负面影响；滑动变阻器提供的电阻调整分辨率受限于其物理旋钮或滑块的最小步进精度，无法实现非常精细的电阻调整
[0014]该可变电阻电容电路模块支持参数的实时调节功能，用户可以即时观察到调节参数对系统功能的影响，这种即时反馈机制加深了学生对模块工作原理的理解，增强了对参数调整影响的认识，促进对系统功能的综合掌握；同时配备了交互触控屏幕，实现了数据的实时显示和用户操作的即时响应，提供了相应的用户界面和交互反馈机制，提升了用户实验的直观性和易操作性，使参数优化过程可视化。
Smart Images
Figure CN224636762U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit experiment technology, specifically a variable resistor-capacitor circuit module. Background Technology
[0002] In signal acquisition systems, the control of key components such as resistors and capacitors is crucial for achieving module versatility and performance optimization. By meticulously adjusting the parameters of these components, different signal processing needs can be met. For example, changing the values of resistors and capacitors can adjust the signal amplitude, optimize amplifier gain, and adjust the cutoff frequency range of filters. In this way, the same hardware module can flexibly adapt to various application scenarios through software configuration and hardware adjustments, thereby improving the system's flexibility and applicability. Currently, resistance is mostly changed using sliding rheostats, which change the resistance by altering the length of the resistance wire connected to the circuit. The resistance wire of a sliding rheostat is generally made of a nickel-chromium alloy with a high melting point and high resistance, while the metal rod is generally made of a metal with low resistance. When the cross-sectional area of the resistor is constant, the longer the resistance wire, the greater the resistance; the shorter the resistance wire, the smaller the resistance. However, sliding rheostats typically occupy more space, which can be a limitation in the design of compact electronic devices that strive for minimal form factor. Their larger footprint may negatively impact the overall portability and integration of the device. Furthermore, the resistance adjustment resolution provided by sliding rheostats is limited by the minimum step accuracy of their physical knobs or sliders, making very fine resistance adjustments impossible. Utility Model Content
[0003] The purpose of this invention is to provide a variable resistor-capacitor circuit module with adjustable parameters in real time. The impact of parameter adjustment on system function can be observed immediately, deepening students' understanding of the module's working principle, enhancing their awareness of the influence of parameter adjustment, promoting comprehensive mastery of system function, providing a corresponding user interface and interactive feedback mechanism, improving the intuitiveness and ease of operation of user experiments, and making the parameter optimization process visible, thereby solving the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A variable resistor-capacitor circuit module includes a main control chip ESP32, a variable resistor-capacitor module, and an interactive touch screen.
[0006] Preferably, the two pins of the main control chip ESP32 serve as the data line and clock line of the IIC bus, respectively. These two pins are connected to the power supply through pull-up resistors to ensure that the line can maintain a high level when there is no data transmission.
[0007] Preferably, two pins of the main control chip ESP32 are connected to the base of the variable resistor-capacitor module for IIC communication. It defines a 16-bit IIC address. The first 8 bits are all 0 to represent the variable resistor-capacitor module, and the last 8 bits, from 0x03 to 0x0A, represent which device is stacked from bottom to top.
[0008] Preferably, the variable resistor-capacitor module is a stackable module, and its base includes a +5V power supply, ground, and IIC communication data and clock pins. It can be stacked up to eight layers. Each variable resistor-capacitor stack module includes a variable resistor and a variable capacitor. The ATmega328P acts as the main controller, which is responsible for controlling the variable resistor and variable capacitor through its I / O ports. The ATmega328P uses two I / O ports to output chip select signals, which are connected to the chip select terminals of the variable capacitor and the variable resistor, respectively.
[0009] Preferably, the variable capacitor module's capacitance is determined by the following principle: the ATmega328P acts as the main controller, controlling the ADGS1612BCPZ chip via SPI communication. This, along with a capacitor matrix, enables variable capacitance. The ADGS1612BCPZ is a single-pole single-throw switch with four serially controlled pins, dynamically connecting different capacitors to the circuit. Different switch combinations allow for selective parallel or series connection of capacitors, synthesizing the desired equivalent capacitance value and achieving adjustable capacitance. The combination of the ADGS1612BCPZ chip and the capacitor matrix creates a highly configurable signal processing platform capable of adapting to various electrical environments and dynamic changes. Similarly, resistance adjustment is achieved through the ADGS1612BCPZ chip and the resistor matrix. Likewise, with the variable capacitor, the ATmega328P can flexibly adjust the values of the capacitor and resistor through precise chip select signal control. The output capacitor and resistor are led out from the port, allowing for the selection of appropriate resistors and capacitors for circuit use as needed.
[0010] Preferably, the interactive touch screen is a DC32960M046 M-series serial port screen from DaCai. The main control chip ESP32 controls the software interface through the serial port based on the device data read by IIC, and updates the screen and IIC device data according to the user's screen operation.
[0011] Preferably, the variable resistor-capacitor module uses a RecordArray two-dimensional array to record device status and parameters. Through device address identification and layer conversion, the interface display is dynamically updated, and the light function is used to control the icon status to reflect the device's online status. Users can enter the resistor-capacitor adjustment interface by clicking the layer icon. The system sets the title and component values according to the RecordArray information and displays them in the corresponding interface.
[0012] Preferably, the user can adjust the resistance and capacitance of the resistance and capacitance on the resistance and capacitance control interface either through a slider control or by keyboard input. The input result will be displayed in a text box, responding to user operations in real time and updating device values through IIC communication.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This variable resistor-capacitor circuit module supports real-time parameter adjustment, allowing users to instantly observe the impact of parameter adjustments on system functionality. This instant feedback mechanism deepens students' understanding of the module's working principle, enhances their awareness of the effects of parameter adjustments, and promotes a comprehensive grasp of system functions. Simultaneously, it is equipped with an interactive touchscreen, enabling real-time data display and immediate response to user operations. It provides a corresponding user interface and interactive feedback mechanism, improving the intuitiveness and ease of operation of user experiments and making the parameter optimization process visible. Attached Figure Description
[0015] Figure 1 This is a control circuit diagram of the variable resistor-capacitor module of this utility model;
[0016] Figure 2 This is a schematic diagram of the variable capacitor module of the present invention.
[0017] Figure 3 This is a schematic diagram illustrating the principle of variable resistance in the potentiometer of this invention. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0020] Please see Figure 1 and Figure 2 This utility model provides a variable resistor-capacitor circuit module, including a main control chip ESP32, a variable resistor-capacitor module, and an interactive touch screen.
[0021] First, the two pins of the main control chip ESP32 serve as the data line (SDA) and clock line (SCL) of the IIC bus, respectively. These two pins are connected to the power supply through pull-up resistors to ensure that the line can maintain a high level when there is no data transmission.
[0022] Two pins of the main control chip ESP32 are connected to the base of the variable resistor-capacitor module for IIC communication. It defines a 16-bit IIC address. The first 8 bits are all 0, which means that the variable resistor-capacitor module is a stacked module. The last 8 bits, from 0x03 to 0x0A, represent which device is stacked from bottom to top. This module can be used for signal conditioning or filtering to meet the needs of subsequent signal processing.
[0023] Secondly, the variable resistor-capacitor module is a stackable module. Its base includes +5V power supply, ground, and IIC (Inter-Integrated Circuit) communication data and clock pins, and can be stacked up to eight layers. Each variable resistor-capacitor stack module contains a variable resistor and a variable capacitor. The ATmega328P acts as the main controller, which is responsible for controlling the variable resistor and variable capacitor through its I / O ports. The ATmega328P uses two I / O ports to output chip select signals, which are connected to the chip select (CS) terminals of the variable capacitor and variable resistor respectively.
[0024] The variable capacitor module works on the principle of variable capacitance: the ATmega328P acts as the main controller, controlling the ADGS1612BCPZ chip via SPI (Serial Peripheral Interface Bus). This, along with a capacitor matrix, enables variable capacitance. The ADGS1612BCPZ is a single-pole single-throw (SPST) switch with four serially controlled pins, dynamically connecting different capacitors to the circuit. Different combinations of switches allow for selective parallel or series connection of capacitors, synthesizing the desired equivalent capacitance value and achieving adjustable capacitance. The combination of the ADGS1612BCPZ chip and the capacitor matrix creates a highly configurable signal processing platform capable of adapting to various electrical environments and dynamic changes. Resistance adjustment is also achieved through the ADGS1612BCPZ chip and the resistor matrix. Similar to the variable capacitor, precise chip select signals allow the ATmega328P to flexibly adjust the values of the capacitor and resistor. The output capacitor and resistor are led out from the ports, allowing for the selection of appropriate resistors and capacitors for circuit use.
[0025] The aforementioned variable resistance can also be achieved using a potentiometer (also known as a variable resistor or potentiometer), such as... Figure 3 As shown. A potentiometer is an electronic component that can adjust the resistance value, allowing the user to dynamically change the resistance value. The adjustable range is 1Ω-100kΩ, with a resolution of 10Ω.
[0026] Meanwhile, the interactive touch screen uses the DC32960M046 M-series serial port screen from DaCai. The main control chip ESP32 controls the software interface through the serial port based on the device data read by IIC, and updates the screen and IIC device data according to the user's screen operation.
[0027] The variable resistor-capacitor module uses a RecordArray two-dimensional array to record the device status and parameters. It dynamically updates the interface display through device address identification and layer conversion, and uses the light function to control the icon status to reflect the device's online status. Users can enter the resistor-capacitor adjustment interface by clicking the layer icon. The system sets the title and component values according to the RecordArray information and displays them in the corresponding interface.
[0028] The resistance and capacitance can be adjusted by the user through slider controls or keyboard input. The input results will be displayed in the text box, responding to user operations in real time and updating device values through IIC communication.
[0029] The variable resistor-capacitor circuit module features real-time adjustable parameters: parameters can be dynamically adjusted via touchscreen. The ATmega328P main controller within the module controls the ADGS1612BCPZ chip and the resistor-capacitor matrix to dynamically adjust resistance and capacitance values, enabling functions such as filtering at different frequencies and adjusting amplification factors to adapt to different environments and signal requirements. Equipped with an interactive touchscreen: using the DaCai M-series DC32960M046 serial port screen, it achieves real-time data display and immediate response to user operations, providing a corresponding user interface and interactive feedback mechanism, enhancing the intuitiveness and ease of operation of user experiments, and making the parameter optimization process visible. The optimized circuit layout solves the problem of low space utilization caused by functional overlap between modules, reduces the need for redundant components, achieves a more compact and efficient system design, and enhances the understanding of the overall impact of parameter adjustments on the system during the learning process.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A variable resistor-capacitor circuit module, characterized in that: This includes the ESP32 main control chip, a variable resistor-capacitor module, and an interactive touchscreen. The two pins of the main control chip ESP32 serve as the data line (SDA) and clock line (SCL) of the IIC bus, respectively. These two pins are connected to the power supply through pull-up resistors to ensure that the line can maintain a high level when there is no data transmission. The two pins of the main control chip ESP32 are connected to the base of the variable resistor-capacitor module for IIC communication. It defines a 16-bit IIC address. The first 8 bits are all 0 to represent the variable resistor-capacitor module, and the last 8 bits, from 0x03 to 0x0A, represent which device is stacked from bottom to top. The variable resistor-capacitor module is a stackable module. Its base includes a +5V power supply, ground, and IIC communication data and clock pins. It can be stacked up to eight layers. Each variable resistor-capacitor stack module includes a variable resistor and a variable capacitor. The ATmega328P acts as the main controller, which is responsible for controlling the variable resistor and variable capacitor through its I / O ports. The ATmega328P uses two I / O ports to output chip select signals, which are connected to the chip select terminals of the variable capacitor and variable resistor respectively. The variable capacitor module operates on the principle of variable capacitance: the ATmega328P acts as the main controller, controlling the ADGS1612BCPZ chip via SPI communication. This, along with a capacitor matrix, enables variable capacitance. The ADGS1612BCPZ is a single-pole single-throw switch with four serially controlled pins, dynamically connecting different capacitors to the circuit. Different switch combinations allow for selective parallel or series connection of capacitors, synthesizing the desired equivalent capacitance value and achieving adjustable capacitance. The combination of the ADGS1612BCPZ chip and the capacitor matrix creates a highly configurable signal processing platform capable of adapting to various electrical environments and dynamic changes. Similarly, resistance adjustment is achieved through the ADGS1612BCPZ chip and the resistor matrix. Likewise, with the variable capacitor, precise chip select signals allow the ATmega328P to flexibly adjust the values of the capacitor and resistor. The output capacitor and resistor are led out from the ports, allowing for the selection of appropriate resistors and capacitors for circuit use.
2. The variable resistor-capacitor circuit module according to claim 1, characterized in that: The interactive touch screen uses the DC32960M046 M-series serial port screen from DaCai. The main control chip ESP32 controls the software interface through the serial port based on the device data read by IIC, and updates the screen and IIC device data according to the user's screen operation.
3. A variable resistor-capacitor circuit module according to claim 2, characterized in that: The variable resistor-capacitor module uses a RecordArray two-dimensional array to record device status and parameters. It dynamically updates the interface display through device address identification and layer conversion, and uses the light function to control the icon status to reflect the device's online status. Users can enter the resistor-capacitor adjustment interface by clicking the layer icon. The system sets the title and component values according to the RecordArray information and displays them on the corresponding interface.
4. A variable resistor-capacitor circuit module according to claim 3, characterized in that: The resistance and capacitance of the resistor and capacitor control interface can be adjusted by the user through a slider control or by keyboard input. The input result will be displayed in a text box, responding to user operations in real time and updating device values through IIC communication.