Key force and speed detection circuit, electric signal input device and game keyboard

Abstract

The utility model key force and speed detection circuit, telecommunication signal input equipment and game keyboard, including the main control MCU module circuit, multichannel selector circuit, capacitance sensor that connect gradually, the utility model discloses a main control MCU module circuit cooperation multichannel selector circuit to capacitance sensor's output voltage data carry out time multiplexing, realize the data acquisition of multiple sensor of single ADC interface, efficiently expand input channel number, reduce hardware cost and complexity, at the same time, the capacitance sensor module fuses the speed and force data of user key into voltage and time mapping table, accurately captures and analyzes the operation behavior of user, provides accurate and rich interactive data, solved the limitation of traditional keyboard, effectively improved the operation accuracy and reaction speed in the use process of user.

Description

Technical Field

[0001] This utility model relates to the field of signal output devices, specifically a key pressure and speed detection circuit, an electrical signal input device, and a game keyboard. Background Technology

[0002] In existing technologies, the detection circuit in a keyboard is usually implemented by a traditional mechanical switch or a sensor based on resistance change. It can also distinguish the key pressure through different physical contact designs and use simple electronic circuits to identify key actions. These methods can basically meet the needs of ordinary users for keyboard input devices.

[0003] However, the traditional methods mentioned above can only provide data in a single dimension (such as whether a key is pressed), and cannot fully capture the details of the user's operation. In professional gaming fields and in more specialized situations such as industry, agriculture, military, and aerospace, this method is difficult to simultaneously ensure high precision and fast response of key pressure and speed, and cannot meet higher-end usage needs. Utility Model Content

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] The button force and speed detection circuit includes a main control MCU module circuit, a multiplexer circuit, and a capacitance sensor connected in sequence.

[0006] The capacitive sensor is capable of generating an electrical signal when the operator presses a button.

[0007] The multiplexer circuit is used to connect the capacitive sensor and the main control MCU module circuit, and can perform time-division multiplexing selection of electrical signals generated by several circuit sensor module circuits.

[0008] The main control MCU module circuit uses a multiplexer circuit to select the output electrical signal of the capacitive sensor for reading. When acquiring the output voltage of the capacitive sensor, it can record the change of voltage value over time, generate a voltage-time mapping table for each key press, and output key information including standard key value, key force and speed information to the external host.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the multiplexer circuit includes a chip and a filter circuit disposed between the capacitive sensor and the chip.

[0011] Furthermore, the main control MCU module circuit includes a microcontroller connected to the multiplexer circuit chip, an ADC interface, and a USB-TYPE-C interface. The ADC interface is connected to the multiplexer circuit chip and is used to acquire the output voltage of the capacitive sensor. The USB-TYPE-C interface is used to connect to an external host.

[0012] Furthermore, the microcontroller of the main control MCU module is CM32F072RBT6, the circuit chip of the multiplexer module is CD4067, and the capacitive sensor includes, but is not limited to, Hall effect sensors, ceramic capacitors, electrolytic capacitors, and pressure sensors.

[0013] Furthermore, the OSC pin of the microcontroller is connected to an oscillation circuit.

[0014] An electrical signal input device includes a key pressure and speed detection circuit, and further includes:

[0015] Circuit board used to load the button force and speed detection circuit;

[0016] A device housing that protects the circuit board;

[0017] The button is located on the surface of the device housing via a spring-loaded mechanism. When the button is pressed, a capacitive sensor generates a corresponding electrical signal.

[0018] A gaming keyboard, including an electrical signal input device, further comprising:

[0019] The LED light module includes surface-mount LED beads mounted on an electrical signal input device and a built-in chip connected to the surface-mount LED beads. The operator can write instructions to the built-in chip through a programming device to change the light color of the surface-mount LED beads.

[0020] Furthermore, the main control MCU module circuit is equipped with a high-speed serial interface for driving the LED light module.

[0021] Beneficial effects

[0022] Compared with existing technologies, this utility model uses a main control MCU module circuit in conjunction with a multiplexer circuit to perform time-division multiplexing of the output voltage data of the capacitive sensor, realizing data acquisition from multiple sensors on a single ADC interface. This efficiently expands the number of input channels, reduces hardware costs and complexity, and simultaneously, the capacitive sensor module integrates the speed and force data of user key presses into a voltage-time mapping table. This accurately captures and analyzes the user's operating behavior, providing accurate and rich interactive data, overcoming the limitations of traditional keyboards, and effectively improving operating accuracy and response speed during user operation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the main control MCU module circuit of the utility model;

[0025] Figure 2 This is a schematic diagram of the LED lamp module circuit for a utility model.

[0026] Figure 3 This is a circuit diagram of a utility model multiplexer module and a capacitance sensor module.

[0027] Figure 4 This is a block diagram of the circuit structure of the utility model; Detailed Implementation

[0028] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the technical product is in use. They are only for the convenience of describing the technology and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the technology.

[0032] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] Please see Figure 1-4 The button force and speed detection circuit includes a main control MCU module circuit, a multiplexer circuit, and a capacitance sensor connected in sequence.

[0034] The capacitive sensor generates an electrical signal, primarily a voltage signal, when the operator presses a button. Meanwhile, the multiplexer circuit connects the capacitive sensor to the main control MCU module circuit, enabling time-division multiplexing of electrical signals generated by several circuit sensor modules.

[0035] The main control MCU module circuit uses a multiplexer circuit to select the output electrical signal of the capacitive sensor for reading. When acquiring the output voltage of the capacitive sensor, it can record the change of voltage value over time, generate a voltage-time mapping table for each key press, and output key information including standard key value, key force and speed information to the external host. By using the multiplexer module to perform time-division multiplexing to select the capacitive sensor set by the main control MCU, only one ADC interface is needed. The multiplexer can sequentially switch and read data from multiple capacitive sensors in different time intervals, thereby avoiding the need to configure an ADC interface for each sensor separately, effectively reducing hardware costs and simplifying circuit design.

[0036] In addition, time-division multiplexing technology enables the system to make more efficient use of limited MCU resources, improving overall performance and reliability.

[0037] The multiplexer circuit includes a chip and a filter circuit located between the capacitive sensor and the chip. The filter circuit can effectively filter out the noise signals attached to the output electrical signal of the capacitive sensor, thereby effectively reducing the error of the output signal.

[0038] The main control MCU module circuit includes a microcontroller connected to a multiplexer circuit chip, an ADC interface, and a USB-TYPE-C interface. The ADC interface, connected to the multiplexer circuit chip, is used to acquire the output voltage of the capacitive sensor. The USB-TYPE-C interface is used to connect to an external host. Specifically, the microcontroller of the main control MCU module is a CM32F072RBT6, and the multiplexer module circuit chip is a CD4067. The capacitive sensor includes, but is not limited to, Hall effect sensors, ceramic capacitors, electrolytic capacitors, and pressure sensors. The main control MCU module circuit integrates the speed and force data of the user's key presses into a voltage-time mapping table to capture the voltage changes at every instant during the key press, reflecting the user's operation speed and force characteristics. By analyzing this data, the system can identify different key press patterns or adjust the feedback intensity. Combined with matching host software, this effectively improves the system's sensing capability and response accuracy, enhancing the user experience.

[0039] Furthermore, the voltage-time mapping table provides rich input data for subsequent data processing and machine learning algorithms, which helps to develop more advanced functions and significantly improves the system's intelligence level and user experience.

[0040] To ensure the overall reliability of the circuit, an oscillation circuit is connected to the OSC pin of the microcontroller to provide a high-precision and stable clock signal, thus providing the circuit with an accurate time reference.

[0041] An electrical signal input device includes the aforementioned key pressure and speed detection circuit, and further includes:

[0042] Circuit board used to load the button force and speed detection circuit;

[0043] A device housing that protects the circuit board;

[0044] The button is located on the surface of the device housing via a spring-loaded mechanism. When the button is pressed, a capacitive sensor generates a corresponding electrical signal.

[0045] A gaming keyboard, including the aforementioned electrical signal input device, further includes:

[0046] The LED light module includes surface-mount LEDs mounted on an electrical signal input device and a built-in chip connected to the surface-mount LEDs. The operator can write instructions to the built-in chip via a programming device to change the light color of the surface-mount LEDs. The main control MCU module circuit has a high-speed serial interface for driving the LED light module. The operator can select different color feedback according to their preferences. Combined with the original capacitive sensor mapping key algorithm of the main control MCU module, a professional gaming keyboard with low cost, high precision, and high response speed is achieved. It not only helps players overcome the limitations of traditional keyboards, but also improves operational precision and reaction speed in high-intensity games, bringing a more comfortable and immersive gaming experience. These advantages are particularly suitable for competitive players, professional e-sports players, and game enthusiasts who have high requirements for input precision and speed.

[0047] In the description of this technology, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A button pressure and speed detection circuit, characterized in that, This includes the main control MCU module circuit, the multiplexer circuit, and the capacitance sensor connected in sequence. The capacitive sensor is capable of generating an electrical signal when the operator presses a button. The multiplexer circuit is used to connect the capacitive sensor and the main control MCU module circuit, and can perform time-division multiplexing selection of electrical signals generated by several circuit sensor module circuits. The main control MCU module circuit uses a multiplexer circuit to select the output electrical signal of the capacitive sensor for reading. When acquiring the output voltage of the capacitive sensor, it can record the change of voltage value over time, generate a voltage-time mapping table for each key press, and output key information including standard key value, key force and speed information to the external host.

2. The button force and speed detection circuit according to claim 1, characterized in that: The multiplexer circuit includes a chip and a filter circuit located between the capacitive sensor and the chip.

3. The button force and speed detection circuit according to claim 1, characterized in that: The main control MCU module circuit includes a microcontroller connected to a multiplexer circuit chip, an ADC interface, and a USB-TYPE-C interface. The ADC interface is connected to the multiplexer circuit chip and is used to acquire the output voltage of the capacitive sensor. The USB-TYPE-C interface is used to connect to an external host.

4. The button force and speed detection circuit according to claim 3, characterized in that: The microcontroller of the main control MCU module is CM32F072RBT6, the multiplexer circuit chip is CD4067, and the capacitive sensors include, but are not limited to, Hall effect sensors, ceramic capacitors, electrolytic capacitors, and pressure sensors.

5. The button force and speed detection circuit according to claim 3, characterized in that: The OSC pin of the microcontroller is connected to an oscillation circuit.

6. An electrical signal input device, comprising the key pressure and speed detection circuit according to any one of claims 1 to 5, characterized in that, Also includes Circuit board used to load the button force and speed detection circuit; A device housing that protects the circuit board; The button is located on the surface of the device housing via a spring-loaded mechanism. When the button is pressed, a capacitive sensor generates a corresponding electrical signal.

7. A gaming keyboard, comprising the electrical signal input device of claim 6, characterized in that, Also includes: The LED light module includes surface-mount LEDs on an electrical signal input device and a built-in chip connected to the surface-mount LEDs. The operator can write instructions to the built-in chip through a programming device to change the light color of the surface-mount LEDs.

8. The gaming keyboard according to claim 7, characterized in that: The main control MCU module circuit is equipped with a high-speed serial interface for driving the LED light module.

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