Touch detection device of electronic fishing float and electronic fishing float

Abstract

This application provides a touch detection device and an electronic fishing float. The touch detection device includes a SOC chip and an LED light-emitting component. The LED light-emitting component is disposed within the float tip of the electronic fishing float and includes at least one LED with an LED anode and an LED cathode. The SOC chip includes an MCU, a built-in LED driving circuit, a built-in touch detection circuit, and a built-in switching circuit. It has a first external terminal and a second external terminal electrically connected to the LED anode and LED cathode, respectively. The MCU controls the built-in switching circuit so that the first and second external terminals are respectively connected to the built-in LED driving circuit in the driving state; and in the touch detection state, they are both connected to the same detection input terminal of the built-in touch detection circuit, so that the LED anode and LED cathode form a single touch sensing terminal. The MCU determines the capacitance change based on the capacitance detection signal and controls the working state of the LED light-emitting component. This application can reuse the existing electrodes of the LED lamp to achieve touch detection, reducing external touch devices and wiring complexity.

Description

Technical Field

[0001] This application relates to the field of electronic fishing float technology, specifically to a touch detection device for an electronic fishing float and an electronic fishing float. Background Technology

[0002] Electronic fishing floats typically have an LED light inside the float tip. This light helps users observe the float's position and fish bites in low-light or nighttime conditions. Current electronic fishing floats generally use a gyroscope to make a simple judgment upon power-on, switching between color-changing and non-color-changing modes, and turning off the LED light by removing or removing the battery. With this method, users need to open the float and remove the battery after each use, which is inconvenient and frequent disassembly can affect the float's sealing and lifespan. Furthermore, current control methods usually only achieve relatively simple state switching, making it difficult to flexibly control the various operating states of the electronic fishing float. In addition, current electronic fishing floats often use a gyroscope in conjunction with an MCU to detect fish bites. This method increases the number of internal circuit components and wiring complexity, hindering miniaturization design and increasing product cost and power consumption. Summary of the Invention

[0003] The purpose of this application is to provide a touch detection device for an electronic fishing float and an electronic fishing float.

[0004] To achieve the above objectives, the first aspect of this application provides a touch detection device for an electronic fishing float, including a SOC chip and an LED light-emitting component; The LED light-emitting component is disposed inside the tip of the electronic fishing float. The LED light-emitting component includes at least one LED lamp, which has a reusable LED anode and an LED cathode. The SOC chip includes an MCU, a built-in LED driver circuit, a built-in touch detection circuit, and a built-in switching circuit. The SOC chip has a first external terminal and a second external terminal. The first external terminal is electrically connected to the LED anode, and the second external terminal is electrically connected to the LED cathode. The built-in switching circuit is located inside the SOC chip and is connected between the first external terminal, the second external terminal, the built-in LED driver circuit, and the built-in touch detection circuit. The MCU is used to control the built-in switching circuit so that the first external terminal and the second external terminal are respectively connected to the built-in LED driver circuit in the driving operation state, so that the LED anode and the LED cathode receive the light-emitting driving signal provided by the built-in LED driver circuit and drive the LED to emit light; and to control the built-in switching circuit so that the first external terminal and the second external terminal are connected to the same detection input terminal of the built-in touch detection circuit in the touch detection state, so that the LED anode and the LED cathode form the same touch sensing terminal and perform capacitance detection; The touch detection circuit is used to acquire the capacitance detection signal of the touch sensing end formed by the LED anode and LED cathode, and to provide the capacitance detection signal to the MCU; The MCU is used to determine the capacitance change of the touch sensing terminal based on the capacitance detection signal, and to control the working state of the LED light-emitting component based on the capacitance change.

[0005] In this embodiment, the built-in switching circuit includes a first switch group and a second switch group; The first switch group is connected between the first external terminal, the second external terminal and the built-in touch detection circuit, and is used to connect the first external terminal and the second external terminal to the same detection input terminal of the built-in touch detection circuit. The second switch group is connected between the first external terminal, the second external terminal and the built-in LED driver circuit, and is used to connect the first external terminal and the second external terminal to the built-in LED driver circuit respectively.

[0006] In this embodiment of the application, during the driving operation state, the MCU controls the first switch group to open and controls the second switch group to open; In touch detection mode, the MCU controls the second switch group to turn off and controls the first switch group to turn on.

[0007] In this embodiment, the MCU is used to control the switching circuit according to a preset time-sharing control cycle, so that the time-sharing control cycle includes a touch detection period and a driving operation period; During the touch detection period, the first external terminal and the second external terminal are connected to the same detection input terminal of the built-in touch detection circuit, so that the LED anode and LED cathode together form a touch sensing terminal and are used for capacitance detection. During the driving operation period, the first external terminal and the second external terminal are respectively connected to the built-in LED driving circuit, so that the LED anode and LED cathode are respectively connected to the LED driving circuit and used to drive the LED lamp to emit light.

[0008] In this embodiment, the built-in touch detection circuit includes an amplifier circuit and an analog-to-digital converter circuit. The amplifier circuit is used to amplify the analog detection signal generated by the capacitance change of the touch sensing end, and the analog-to-digital converter circuit is used to convert the amplified detection signal into a capacitance detection signal.

[0009] In this embodiment of the application, the MCU is also used for: In touch detection mode, the capacitance change is determined based on the difference between the capacitance detection signal and the preset reference value; When the capacitance change is greater than a preset touch threshold, the touch gesture is identified based on at least one of the following: the duration of the capacitance detection signal, the number of changes, and the time interval between adjacent changes. Based on touch gesture control, the built-in switching circuit and / or built-in LED driver circuit are used to control the LED light to turn on, turn off, adjust the light emission mode, adjust the light emission brightness, or switch the on / off state. In addition, under the touch detection state, based on the capacitance change corresponding to multiple capacitance detection signals continuously collected within the preset time window, it is determined whether the capacitance change shows a continuous increasing trend or a continuous decreasing trend, and if it shows a continuous increasing trend or a continuous decreasing trend, it is determined that there is a fish biting the hook state. The built-in LED driver circuit adjusts the LED light's illumination state based on the fish biting the hook status.

[0010] In this embodiment of the application, the electronic fishing float also includes a battery, a float tip cover, and a float body. The battery has an exposed conductive outer surface, which is electrically connected to the positive terminal of the battery. In touch detection mode, when a user touches at least one of the battery, the float tail cover, and the float body, the human body changes the equivalent capacitance of the touch sensing terminal through conductive contact or dielectric capacitive coupling, causing a change in the capacitance detection signal of the touch sensing terminal.

[0011] In this embodiment of the application, the MCU is also used to put the electronic fishing float into a sleep state after the LED light is turned off according to the touch gesture. In sleep mode, the MCU controls the built-in LED driver circuit to stop outputting light-emitting drive signals to the LED and wakes up periodically based on a low-frequency clock. During each wake-up, the MCU controls the built-in switching circuit to connect both the LED anode and the LED cathode to the built-in touch detection circuit, and collects the capacitance detection signal at a sampling frequency lower than that of normal operation.

[0012] In this embodiment of the application, the MCU is also used to filter multiple continuously acquired capacitance detection signals and determine the capacitance change based on the filtered capacitance detection signals.

[0013] A second aspect of this application provides an electronic fishing float, including a touch detection device for the electronic fishing float.

[0014] By utilizing the existing LED anode and cathode in the electronic fishing float as reusable circuits, and controlling the switching circuit via the SOC chip's built-in MCU, the LED anode and cathode are connected to the LED driver circuit separately in the driving state to drive the LED to emit light. In the touch detection state, the LED anode and cathode are connected to the touch detection circuit together to form a single touch sensing end for capacitance detection. The touch detection circuit collects the capacitance detection signal from the touch sensing end formed by the LED anode and cathode and outputs the signal to the SOC chip's built-in MCU. The SOC chip's built-in MCU determines the capacitance change of the touch sensing end based on the capacitance detection signal and then controls the working state of the LED light-emitting component accordingly. In this way, the LED anode and cathode can serve as both LED driver circuits and touch sensing ends for touch detection, achieving time-division multiplexing of LED lighting and touch detection functions. This application eliminates the need for additional independent touch electrodes and physical buttons to control the working state of the LED light-emitting component, reducing the number of internal components and wiring complexity of the electronic fishing float, and lowering product costs. At the same time, by reducing the exposed button structure, the risk of circuit damage caused by water entering the electronic fishing float is reduced, thus solving the problems of complex structure, high cost and poor sealing reliability of existing electronic fishing floats that require additional buttons, independent touch structure or other detection devices.

[0015] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 A schematic diagram illustrating the time-sharing control cycle according to an embodiment of this application is shown. Figure 2 A schematic diagram of a switching circuit according to an embodiment of this application is shown; Figure 3 A schematic diagram of the structure of an electronic fishing float according to an embodiment of this application is shown. Figure 4 The schematic diagram illustrates the process flow of the detection device for an electronic fishing float according to an embodiment of this application. 1. Blue LED light; 2. Red LED light; S0, First switch; S1, Second switch; S2, Third switch; S3, Fourth switch; 3. Float tail; 4. Float tail cover; 5. Battery; 6. Float foot; 7. Float body. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0018] like Figure 1-2 As shown, in one embodiment of this application, a touch detection device for an electronic fishing float is provided, including a SOC chip and an LED light-emitting component. The LED light-emitting component is disposed in the float tail of the electronic fishing float, and the LED light-emitting component includes at least one LED lamp, which has a reusable LED anode and an LED cathode. The SOC chip includes an MCU, a built-in LED driver circuit, a built-in touch detection circuit, and a built-in switching circuit. The SOC chip has a first external terminal and a second external terminal. The first external terminal is electrically connected to the LED anode, and the second external terminal is electrically connected to the LED cathode. The built-in switching circuit is located inside the SOC chip and connects the first external terminal, the second external terminal, the built-in LED driver circuit, and the built-in touch detection circuit.

[0019] The MCU is used to control the built-in switching circuit so that the first external terminal and the second external terminal are respectively connected to the built-in LED driver circuit in the driving operation state, so that the LED anode and the LED cathode receive the light-emitting driving signal provided by the built-in LED driver circuit and drive the LED to emit light; and to control the built-in switching circuit so that the first external terminal and the second external terminal are connected to the same detection input terminal of the built-in touch detection circuit in the touch detection state, so that the LED anode and the LED cathode form the same touch sensing terminal and perform capacitance detection.

[0020] The built-in touch detection circuit is used to acquire the capacitance detection signal of the touch sensing end formed by the LED anode and LED cathode, and provide the capacitance detection signal to the MCU. The MCU uses the capacitance detection signal to determine the capacitance change of the touch sensing end, and controls the working state of the LED light-emitting component according to the capacitance change.

[0021] In one embodiment, the touch detection device of the electronic fishing float includes a SOC chip and an LED light-emitting component. The LED light-emitting component is disposed within the float tip of the electronic fishing float. The LED light-emitting component includes at least one LED lamp, which has a reusable LED anode and an LED cathode. The SOC chip includes an MCU, a built-in LED driver circuit, a built-in touch detection circuit, and a built-in switching circuit. The SOC chip has a first external terminal and a second external terminal, the first external terminal being electrically connected to the LED anode and the second external terminal being electrically connected to the LED cathode. The built-in switching circuit is disposed inside the SOC chip and connected between the first external terminal, the second external terminal, the built-in LED driver circuit, and the built-in touch detection circuit. By controlling the built-in switching circuit, the MCU can enable the first external terminal and the second external terminal to be respectively connected to the built-in LED driver circuit in the driving operation state, or enable the first external terminal and the second external terminal to be jointly connected to the same detection input terminal of the built-in touch detection circuit in the touch detection state.

[0022] In driving mode, the MCU controls the built-in switching circuit to connect the first and second external terminals to the built-in LED driver circuit. The built-in LED driver circuit provides a light-emitting drive signal to the LED, causing it to emit light. At this time, the LED anode and cathode function as the driving circuit for the LED, enabling the electronic fishing float to emit light at the tip. The LED's illumination state can include being on, off, adjusting the illumination mode, adjusting brightness, or switching between on and off states. By emitting light through the LED components, users can observe the position and movement of the electronic fishing float at night or in low-light environments.

[0023] In touch detection mode, the MCU controls the built-in switching circuit to connect both the first and second external terminals to the same detection input terminal of the built-in touch detection circuit. At this time, the LED anode and cathode are not used as LED driving circuits, but instead form a single touch sensing terminal. The built-in touch detection circuit acquires the capacitance detection signal of this touch sensing terminal and provides it to the MCU. The MCU determines the capacitance change of the touch sensing terminal based on the capacitance detection signal and controls the operating state of the LED light-emitting component accordingly. The LED anode and cathode have different functions in different operating states. In driving mode, the LED anode and cathode receive the light-emitting driving signal provided by the built-in LED driving circuit, causing the LED to emit light. In touch detection mode, the LED anode and cathode together form the touch sensing terminal for capacitance detection. This eliminates the need for separate touch electrodes, allowing touch detection to be completed using the existing anode and cathode of the LED.

[0024] When a user touches a component of the electronic fishing float, or when the float's tip changes its position in the water, the capacitance around the touch-sensitive end formed by the LED anode and cathode changes. The built-in touch detection circuit then detects this change in capacitance. The MCU can determine whether a touch action has occurred, whether the float's position in the water has changed, or whether a fish has taken the bait based on this change in capacitance. After detecting the capacitance change, the MCU can further control the LED's operating state, such as turning the LED on / off, adjusting its lighting mode, adjusting its brightness, or switching it between on / off states.

[0025] In touch detection mode, the LED anode and LED cathode together form the touch sensing end, and an equivalent capacitance is formed between the touch sensing end and the equivalent reference end in the human body, water body, or electronic fishing float. When the user touches the battery or the top cover of the float, the human body changes the equivalent capacitance of the touch sensing end relative to the equivalent reference end through conductive contact or dielectric capacitive coupling, causing a change in the capacitance detection signal of the touch sensing end. When the LED light-emitting component includes multiple LEDs arranged in opposite directions, the LED anode and LED cathode can be understood as the two electrode nodes used by the LED light-emitting component to connect to the SOC chip.

[0026] This embodiment utilizes a built-in switching circuit within the SOC chip to switch the connection state of the first and second external terminals between the built-in LED driver circuit and the built-in touch detection circuit. This allows the anode and cathode of the LED to be used for both LED illumination and touch detection. Touch control is achieved without adding physical buttons, avoiding problems such as water ingress into the float or structural complexity caused by buttons. Simultaneously, utilizing the existing LED circuitry on the float tip for capacitance detection reduces the complexity of external touch detection devices, LED driver devices, and PCB wiring, lowering the cost of the electronic fishing float and improving its ease of use.

[0027] In one embodiment, the built-in switching circuit includes a first switch group and a second switch group. The first switch group is connected between the first external terminal, the second external terminal, and the built-in touch detection circuit, enabling the first and second external terminals to connect to the same detection input terminal of the built-in touch detection circuit. The second switch group is connected between the first and second external terminals and the built-in LED driving circuit, enabling the first and second external terminals to be respectively connected to the built-in LED driving circuit. Through the first and second switch groups, touch detection paths and LED driving paths can be established respectively, allowing the LED anode and LED cathode to be connected to different circuits under different operating conditions.

[0028] The first switch group controls the connection between the first and second external terminals and the built-in touch detection circuit. When the electronic fishing float enters the touch detection state, the MCU can control the first switch group to turn on, connecting the first and second external terminals to the same detection input terminal of the built-in touch detection circuit. At this time, the LED anode and LED cathode form the same touch sensing terminal, and the built-in touch detection circuit can collect the capacitance detection signal of this touch sensing terminal. This capacitance detection signal can reflect the capacitance change caused by external touch, water entry changes, or changes in the fish's bite state.

[0029] The second switch group controls the connection between the first and second external terminals and the built-in LED driver circuit. When the electronic float enters the driving state, the MCU can control the second switch group to turn on, connecting the first and second external terminals to the built-in LED driver circuit respectively. The built-in LED driver circuit provides light-emitting drive signals to the LED anode and LED cathode, causing the LED to light up. At this time, the LED anode and LED cathode are used as LED driving circuits and are not used as touch sensing terminals for capacitance detection.

[0030] By placing the first switch group between the first and second external terminals and the built-in touch detection circuit, and placing the second switch group between the first and second external terminals and the built-in LED driver circuit, it is possible to avoid the built-in LED driver circuit and the built-in touch detection circuit simultaneously acting on the LED anode and LED cathode. In other words, the touch detection path can be disconnected during LED driving; and the LED driving path can be disconnected during touch detection. This reduces the influence of the LED driving signal on the capacitance detection signal and also prevents the touch detection process from affecting the normal illumination of the LED.

[0031] For example, during LED driving, the second switch group is turned on, the first switch group is turned off, and the first and second external terminals are respectively connected to the built-in LED driving circuit. The LED anode and LED cathode receive the light-emitting driving signal output by the built-in LED driving circuit, and the LED lights up normally. During touch detection, the first switch group is turned on, the second switch group is turned off, and the first and second external terminals are connected to the same detection input terminal of the built-in touch detection circuit. The LED anode and LED cathode together form the touch sensing terminal, and the built-in touch detection circuit collects the capacitance detection signal. By switching the two switch groups, the LED anode and LED cathode can be time-division multiplexed between LED driving and touch detection.

[0032] like Figure 2As shown, in one embodiment, the MCU controls the built-in switching circuit according to a preset time-sharing control cycle. The preset time-sharing control cycle includes a touch detection period and a driving operation period. The MCU controls the built-in switching circuit to switch the connection objects of the first external terminal and the second external terminal at different time periods, so that the LED anode and LED cathode can realize touch detection and LED driving in a time-sharing manner within one cycle.

[0033] During the touch detection period, the MCU controls the built-in switching circuit to connect both the first and second external terminals to the same detection input terminal of the built-in touch detection circuit. At this time, the LED anode and cathode are connected to form the same touch sensing terminal. The built-in touch detection circuit collects the capacitance detection signal from the touch sensing terminal and provides it to the MCU. The MCU can determine the capacitance change of the touch sensing terminal based on the capacitance detection signal. This capacitance change can be caused by user touch, changes in the float's entry into the water, or a fish biting the hook.

[0034] During the driving operation period, the MCU controls the built-in switching circuit, connecting the first and second external terminals to the built-in LED driver circuit respectively. At this time, the LED anode and LED cathode function as the driving circuit for the LED lights. The built-in LED driver circuit provides light-emitting driving signals to the LED anode and LED cathode, causing the LED lights to illuminate. The illumination of the LED lights can be used to indicate the position of the electronic fishing float or its working status. By setting the touch detection period and the driving operation period within the same time-sharing control cycle, the LED anode and LED cathode can perform different functions at different times.

[0035] In one embodiment, the built-in touch detection circuit includes an amplifier circuit (AMP) and an analog-to-digital converter (ADC). The amplifier circuit (AMP) is connected to the touch sensor and is used to receive the detection signal generated by the touch sensor and amplify the detection signal. The ADC is connected to the amplifier circuit (AMP) and is used to receive the amplified detection signal and convert the amplified detection signal into a capacitance detection signal that the MCU can recognize and process.

[0036] In touch detection mode, the LED anode and LED cathode together form the touch sensing end. When the user touches the battery, float tip cover, or float body of the electronic fishing float, or when the float tip's water entry status changes, the capacitance around the touch sensing end changes. This capacitance change causes the touch sensing end to generate a corresponding detection signal. Since this detection signal is usually weak, directly transmitting it to the MCU may not be conducive to accurate judgment. Therefore, the detection signal is first amplified by an amplifier circuit (AMP). The amplified detection signal is still an analog signal. The analog-to-digital converter (ADC) circuit converts this analog signal into a digital capacitance detection signal and outputs it to the MCU. After receiving the capacitance detection signal, the MCU can determine the amount of capacitance change based on the difference between the capacitance detection signal and a preset reference value. Using this capacitance change, the MCU can further determine whether a touch gesture, water entry change, or fish bite has occurred.

[0037] In one embodiment, the MCU receives a capacitance detection signal output by the built-in touch detection circuit during touch detection. The MCU has a preset reference value stored in advance, which can be the capacitance detection signal collected when the electronic float is not touched and the float tip is stable. The MCU compares the currently collected capacitance detection signal with the preset reference value, calculates the difference between the two, and uses this difference as the capacitance change. The capacitance change reflects the degree of change in the capacitance state around the touch sensing end.

[0038] If the capacitance change exceeds a preset touch threshold, the MCU determines that a valid capacitance change has occurred at the touch sensor. The MCU further identifies the touch gesture based on at least one of the following: the duration of the capacitance detection signal, the number of changes, and the time interval between adjacent changes. For example, when the duration of the capacitance detection signal change reaches a preset long press time, it can be identified as a long press gesture; when the capacitance detection signal shows two valid changes within a preset time, it can be identified as a double-click gesture; and when a capacitance change with a duration meeting the requirement continues after a double-click gesture, it can be identified as a combined gesture.

[0039] After recognizing a touch gesture, the MCU controls the built-in switching circuit and / or the built-in LED driver circuit based on the gesture. Specifically, the MCU can control the built-in switching circuit to put the LED anode and LED cathode into driving operation, and provide a light-emitting driving signal to the LED light through the built-in LED driver circuit, so that the LED light can be turned on, off, its light emission mode adjusted, its brightness adjusted, or its on / off state switched. In this way, the user does not need to disassemble the electronic float to remove the battery, nor does it need to set physical buttons; they can control the working state of the LED light through touch actions. In another embodiment, the MCU can also determine the fish bite status based on the changing trend of the capacitance detection signal in the touch detection state. After the LED anode and LED cathode together form the touch sensing end, when the depth of the float tip in the water or the contact state in the water changes, the capacitance detection signal of the touch sensing end will change accordingly. When a fish bites, the electronic float may sink, float, or shake, causing the contact state between the float tip and the water to change. The MCU can determine whether the capacitance change shows a continuous increasing trend or a continuous decreasing trend based on the capacitance change corresponding to multiple capacitance detection signals continuously collected within a preset time window. If, without recognizing a touch gesture, the capacitance change shows a continuous increasing or decreasing trend within a preset time window, and the duration of this trend meets a preset fish bite time condition and the magnitude of the change exceeds a preset fish bite threshold, then the MCU determines that a fish has taken the bait. For example, during subsequent driving periods, the LED light can be controlled to change its color or its on / off state, allowing the user to observe the fish bite status based on the LED light's illumination. Determining the fish bite status by analyzing the changing trend of the capacitance detection signal can utilize the existing LED anode and cathode to detect changes in water immersion, eliminating the need for an additional gyroscope.

[0040] In one embodiment, the electronic fishing float further includes a battery, a float tip cover, and a float body. The battery has an exposed conductive outer surface, which is electrically connected to the positive terminal of the battery. In this embodiment, the outer surface of the battery is the anode. The battery can serve as a component for user touch operation. When a user touches at least one of the battery, float tip cover, and float body, the human body changes the equivalent capacitance of the touch sensing terminal through conductive contact or dielectric capacitive coupling, causing a change in the capacitance detection signal of the touch sensing terminal. When a user touches the float tip cover or float body, if the float tip cover or float body has at least a partially conductive portion, this conductive portion can change the equivalent electric field around the touch sensing terminal through conductive contact or capacitive coupling. If the float tip cover or float body is an insulating structure, when a human body touches the float tip cover or float body, the equivalent capacitance of the touch sensing terminal formed by the LED anode and LED cathode relative to the equivalent reference terminal can be changed through dielectric capacitive coupling. As a result, the capacitance detection signal collected by the built-in touch detection circuit changes, and the MCU can determine whether a touch action has occurred based on the change in the capacitance detection signal.

[0041] In other words, when a user touches at least one of the battery, the float tip cover, or the float body, the human body, as a conductor, participates in the capacitive detection environment of the electronic fishing float, causing a change in the equivalent reference ground state inside the float. After the equivalent reference ground state changes, the capacitance state of the touch-sensing terminal formed by the LED anode and LED cathode relative to this equivalent reference ground also changes. In touch detection mode, the MCU controls the built-in switching circuit to connect both the first and second external terminals to the same detection input terminal of the built-in touch detection circuit. At this time, the LED anode and LED cathode are no longer used to drive the LED light, but instead jointly form the touch-sensing terminal. The built-in touch detection circuit collects the capacitance detection signal of this touch-sensing terminal and provides the capacitance detection signal to the MCU.

[0042] When a user touches the battery, the human body alters the equivalent reference ground state within the electronic float. Since the capacitance detection signal at the touch sensor is related to the equivalent reference ground state, a change in the equivalent reference ground state will also change the capacitance detection signal acquired by the built-in touch detection circuit. The MCU can determine whether the user has touched the battery based on this change in capacitance detection signal and further identify the touch gesture.

[0043] In one embodiment, after recognizing a touch gesture, the MCU can control the LED to turn off based on the gesture. Once the LED is off, the electronic fishing float no longer needs to continuously provide a light-emitting drive signal to the LED. At this time, the MCU controls the electronic fishing float to enter a sleep state to reduce power consumption when the electronic fishing float is not in use or is temporarily off.

[0044] In sleep mode, the MCU controls the built-in LED driver circuit to stop outputting light-emitting drive signals to the LEDs and periodically wakes them up based on a low-frequency clock. During each wake-up, the MCU controls the built-in switching circuit to connect both the LED anode and cathode to the built-in touch detection circuit, acquiring capacitance detection signals at a sampling frequency lower than that of normal operation. In other words, the built-in LED driver circuit no longer outputs electrical signals to the LED anode and cathode to light up the LEDs, and the LEDs remain off.

[0045] In one embodiment, the MCU filters multiple capacitance detection signals continuously acquired by the built-in touch detection circuit. During use, the electronic fishing float may be affected by water ripples, float tip movement, brief accidental touches by the user, LED driver switching interference, or instantaneous circuit fluctuations. This may result in short-duration spikes in the capacitance detection signals acquired by the built-in touch detection circuit. Directly determining the capacitance change based on these spikes could lead to the MCU misinterpreting touch gestures or the fish biting the hook.

[0046] In touch detection mode, the LED anode and LED cathode together form the touch sensing end. The built-in touch detection circuit continuously acquires multiple capacitance detection signals from the touch sensing end at a preset acquisition frequency and outputs these signals to the MCU. After receiving the multiple capacitance detection signals, the MCU filters them to remove short-term spikes, instantaneous jumps, or abnormal fluctuations. The filtered capacitance detection signals can more accurately reflect the actual capacitance changes of the touch sensing end.

[0047] After filtering, the MCU determines the capacitance change based on the filtered capacitance detection signal. Specifically, the MCU compares the filtered capacitance detection signal with a preset reference value, obtains the difference between the two, and uses this difference as the capacitance change. Since this capacitance change is based on the filtered capacitance detection signal, interference from glitches in the capacitance change determination is reduced.

[0048] By filtering multiple continuously acquired capacitance detection signals, the MCU can improve the stability and reliability of capacitance changes. When recognizing touch gestures, it can reduce misjudgments caused by short-term false triggers; when judging a fish bite, it can reduce misjudgments caused by water ripples, float tip movement, or momentary interference. In this way, the electronic fishing float can more stably complete touch detection and fish bite judgment.

[0049] In one embodiment, the MCU controls the built-in switching circuit according to a preset time-division control cycle, so that the LED anode and LED cathode are respectively connected to the built-in LED driving circuit during the driving operation period, and are jointly connected to the built-in touch detection circuit during the touch detection period. The preset time-division control cycle can be 5ms corresponding to 200Hz, with 1ms as the touch detection period and 4ms as the driving operation period within one preset time-division control cycle. Through the above time-division control method, the LED anode and LED cathode are used as LED driving circuits during the driving operation period and as touch sensing terminals during the touch detection period.

[0050] The LED driving circuit and the touch detection circuit achieve time-sharing switching through a built-in switching circuit. The built-in switching circuit includes a first switch group and a second switch group; the first switch group includes a first switch S0 and a second switch S1, and the second switch group includes a third switch S2 and a fourth switch S3. The first switch group is connected between the first external terminal, the second external terminal and the built-in touch detection circuit, and the second switch group is connected between the first external terminal, the second external terminal and the built-in LED driving circuit.

[0051] When driving the LED, the MCU controls the first switch S0 and the second switch S1 to open, and controls the third switch S2 and the fourth switch S3 to open, so that the first external terminal and the second external terminal are respectively connected to the built-in LED driver circuit. The MCU outputs control signals to the LED anode and the LED cathode through the first external terminal and the second external terminal respectively. For example, when the first external terminal outputs a high level and the second external terminal outputs a low level, the blue LED 1 is lit and the red LED 2 is off; when the first external terminal outputs a low level and the second external terminal outputs a high level, the red LED 2 is lit and the blue LED 1 is off.

[0052] In touch detection mode, the MCU controls the third switch S2 and the fourth switch S3 to open, and controls the first switch S0 and the second switch S1 to open, so that the first external terminal and the second external terminal are connected to the built-in touch detection circuit and become the same touch sensing terminal. At this time, the voltage levels at both ends of the LED are consistent, and the voltage level of the middle LED will not affect the built-in touch detection circuit. The built-in touch detection circuit can accurately collect the capacitance detection signal to realize the judgment of touch or water immersion status, without affecting the driving function of the LED.

[0053] This application also proposes an electronic fishing float, including a touch detection device for the electronic fishing float. For example... Figure 3As shown, the electronic fishing float specifically includes a float tip 3, a float tip cover 4, a float body 7, a float stem 6, a battery 5, and a PCB board. The float tip 3 houses an LED light-emitting component, which illuminates the float after it enters the water, allowing anglers to observe its position and status changes. The float tip cover 4 is located at the bottom of the float tip 3, and its bottom has a recessed first mounting cavity. The PCB board is housed within this first mounting cavity of the float tip cover 4.

[0054] The PCB board houses a System-on-a-Chip (SOC) chip. The SOC chip includes an MCU, a built-in LED driver circuit, a built-in touch detection circuit, and a built-in switching circuit. The LED light-emitting components are electrically connected to the first and second external terminals of the SOC chip and are driven to emit light under the control of the MCU via the built-in LED driver circuit. No separate touch electrodes are required on the PCB board; the touch sensing structure consists of the touch sensing end formed by the LED anode and LED cathode in touch detection mode.

[0055] The top of the float body 7 is connected to the bottom of the float tail cover 4. The float body 7 has an inwardly recessed second mounting cavity, which communicates with the first mounting cavity. The bottom of the float body 7 has a float foot 6. The battery 5 is disposed within the mounting space formed by the float tail cover 4 and the float body 7, and is connected to the power connection structure on the PCB board to power the SOC chip. The outer surface of the battery 5 is the battery anode.

[0056] In touch detection mode, the MCU controls the built-in switching circuit to connect the first and second external terminals to the same detection input terminal of the built-in touch detection circuit, making the LED anode and LED cathode form the same touch sensing terminal. When the user touches battery 5, the human body changes the equivalent reference ground state inside the electronic float via battery 5, thereby changing the equivalent capacitance corresponding to the touch sensing terminal. The built-in touch detection circuit collects the capacitance detection signal corresponding to this capacitance change and provides the capacitance detection signal to the MCU. The MCU determines whether a touch action has occurred based on the change in the capacitance detection signal and further controls the working state of the LED light-emitting component, such as controlling the LED light-emitting component to turn on, turn off, adjust the light emission mode, adjust the light emission brightness, or switch between on and off states.

[0057] Compared with existing technologies, this application proposes a touch detection device for an electronic fishing float. It utilizes the existing LED anode and cathode of the LED light in the electronic fishing float as reusable circuits. Under the control of the MCU's built-in switching circuit, the LED anode and cathode are respectively connected to the built-in LED driver circuit in the driving state to drive the LED light to emit light. In the touch detection state, the LED anode and cathode are jointly connected to the built-in touch detection circuit to form a single touch sensing end for capacitance detection. The built-in touch detection circuit collects the capacitance detection signal from the touch sensing end formed by the LED anode and cathode and provides the capacitance detection signal to the MCU. The MCU determines the capacitance change of the touch sensing end based on the capacitance detection signal and then controls the working state of the LED light-emitting component based on the capacitance change. In this way, the LED anode and cathode can serve as both LED driving circuits and touch sensing ends for touch detection, achieving time-division multiplexing of LED light-emitting and touch detection functions. This application does not require additional independent touch electrodes or physical buttons to control the working state of the LED light-emitting component, reducing the complexity of external touch detection devices, LED driver devices, and PCB wiring for the SOC chip, and lowering product costs. At the same time, by reducing the exposed button structure, the risk of circuit damage caused by water entering the electronic fishing float can be reduced, thereby solving the problems of complex structure, high cost and poor sealing reliability of existing electronic fishing floats due to the need for additional buttons, independent touch structure or other detection devices.

[0058] In one embodiment, such as Figure 4 As shown, the first external terminal and the second external terminal are electrically connected to the two electrode nodes of the LED light-emitting component, respectively. The LED light-emitting component includes a blue LED and a red LED connected in reverse parallel between the two electrode nodes.

[0059] The detection process for the touch detection device of the electronic fishing float is as follows: Step S1: The MCU initializes the built-in touch detection circuit and the built-in LED driver circuit, and acquires the initial capacitance detection signal from the touch sensing end, corrects the signal, and refreshes the BASE. BASE is a preset reference value used to represent the reference capacitance state of the touch sensing end when there is no effective touch, a change in water state, or a change in the fish biting state. The MCU corrects the initial capacitance detection signal to remove abnormal fluctuations during initial acquisition, so that the refreshed BASE can serve as a comparison benchmark for subsequent capacitance detection signals. BASE is acquired during the touch detection period through the touch sensing end formed by the LED anode and LED cathode. If the current value of the acquired capacitance detection signal is greater than BASE and the difference between BASE and BASE is less than a preset touch threshold, then BASE is corrected upwards based on the acquired capacitance detection signal value; if the acquired capacitance detection signal value is less than BASE, then BASE is corrected downwards based on the acquired capacitance detection signal value; if the acquired capacitance detection signal value is greater than BASE and the difference between BASE and BASE is greater than the touch threshold, and this continues for a period of time, then a touch occurs.

[0060] Step S2: The MCU controls the built-in switching circuit to connect the first and second external terminals to the built-in LED driver circuit, and drives the blue LED to emit light through the output signals of the first and second external terminals. In this step, the LED anode and LED cathode are used for LED driving, and BASE remains at the current reference value, which will be used for comparison with the capacitance detection signal in the subsequent touch detection step.

[0061] Step S3: The MCU controls the built-in switching circuit to connect the first and second external terminals to the same detection input terminal of the built-in touch detection circuit, thereby forming a touch sensing terminal between the LED anode and LED cathode and acquiring the capacitance detection signal. The MCU filters and performs BASE tracking on the capacitance detection signal. Filtering removes glitches, short-term spikes, or transient jumps in the capacitance detection signal; BASE tracking updates the BASE based on a stable capacitance detection signal when no valid touch or change in the fish bite status is detected.

[0062] Step S4: The MCU determines whether the BASE tracking duration is greater than the preset time. The BASE tracking duration is used to limit the duration of continuous BASE updates, preventing the BASE from continuously following changes in the capacitance detection signal for an extended period and mistakenly updating the effective capacitance changes caused by user touch, float entry into water, or fish biting the hook to a new reference value. If the BASE tracking duration is less than or equal to the preset time, it means that the BASE is still within the allowed tracking time, and the current BASE can continue to be used as the comparison reference for touch gesture judgment, proceeding to step S5; if the BASE tracking duration is greater than the preset time, it means that the BASE tracking has timed out, and the reference capacitance state of the touch sensing end needs to be reconfirmed, proceeding to step S8.

[0063] Step S5: The MCU determines whether a touch gesture exists based on the capacitance detection signal, such as double-tap, long press, or a combination of double-tap and long press. Specifically, the MCU compares the filtered capacitance detection signal with BASE to obtain the capacitance change, and determines whether a touch gesture exists based on the magnitude, duration, number of changes, and time interval between adjacent changes.

[0064] If no touch gesture is detected, return to step S2; If a touch gesture is detected, proceed to step S6.

[0065] Step S6: The MCU keeps the blue LED lit and continues to acquire capacitance detection signals. In this step, BASE continues to serve as the comparison benchmark for determining the touch gesture to turn off the LED. The MCU continues to compare the acquired capacitance detection signals with BASE to determine whether a touch gesture to turn off the LED has occurred. If a touch gesture to turn off the LED is detected again, proceed to step S7; otherwise, continue acquiring capacitance detection signals and keep the blue LED lit. Keeping the blue LED lit means that in the driving operation state, the blue LED is driven to emit light through the built-in LED driver circuit, and during the touch detection period, the built-in switching circuit switches to the built-in touch detection circuit to acquire capacitance detection signals.

[0066] Step S7: The MCU controls the built-in LED driver circuit to stop outputting light-emitting drive signals to the LED, turning off the LED and putting the electronic float into sleep mode, reducing the touch detection sampling frequency. The MCU periodically collects capacitance detection signals. In sleep mode, BASE is used as a comparison benchmark for low-frequency wake-up detection. The MCU compares the periodically collected capacitance detection signals with BASE to determine whether a touch gesture is used to wake up the electronic float.

[0067] If a touch gesture is detected, return to step S2; If no touch gesture is detected, remain in sleep mode.

[0068] Step S8: In the event of a BASE tracking timeout, the MCU controls the built-in switching circuit to connect the first and second external terminals to the built-in LED driver circuit, respectively, and drive the blue LED to light up. Subsequently, the MCU controls the built-in switching circuit to connect both the first and second external terminals to the same detection input terminal of the built-in touch detection circuit, continuing to acquire capacitance detection signals and track the BASE. BASE tracking timeout refers to the continuous tracking time exceeding a preset time. In this case, the MCU needs to re-acquire and track the capacitance detection signal to reconfirm or update the BASE, thereby reducing the impact of long-term environmental drift, water changes, or circuit state changes on touch gesture judgment and fish bite status judgment. The updated BASE continues to serve as the comparison benchmark for subsequent touch gesture judgment and fish bite trend judgment. If a touch gesture is detected, proceed to step S9; if no touch gesture is detected, proceed to step S10.

[0069] Step S9: The MCU controls the built-in LED driver circuit to stop outputting the light-emitting drive signal to the LED, turning off the LED and putting the electronic float into sleep mode, reducing the frequency of the capacitance detection signal acquisition. In this step, BASE is used for wake-up determination in sleep mode. The MCU compares the low-frequency capacitance detection signal acquired with BASE to determine if a touch gesture for wake-up is present.

[0070] If a touch gesture is detected, return to step S2; If no touch gesture is detected, remain in sleep mode.

[0071] Step S10: The MCU determines whether the capacitance detection signal shows a continuous increasing or decreasing trend within a preset time window. The MCU continuously acquires multiple capacitance detection signals within the preset time window and compares each signal with the BASE to obtain multiple capacitance changes. In the absence of a recognized touch gesture, the MCU determines whether the capacitance detection signal shows a continuous increasing or decreasing trend based on the direction of these capacitance changes within the preset time window. When a fish bites the hook, causing the float to sink, the length of the float submerged in water increases, enhancing the equivalent interaction between the water and the touch sensor, resulting in a continuous increasing or decreasing capacitance detection signal. When a fish bites the hook, causing the float to rise, the length of the float submerged in water decreases, and the capacitance detection signal shows the opposite trend.

[0072] If there is no continuous increasing or decreasing trend, return to step S8; If the trend is continuously increasing or decreasing, proceed to step S11.

[0073] Step S11: The MCU controls the built-in switching circuit to connect the first and second external terminals to the built-in LED driver circuit, and the built-in LED driver circuit lights up the red LED. The MCU determines the duration of the red LED's illumination.

[0074] If the preset time is reached, return to step S8; If the preset time is not reached, keep the red LED light on until the preset time is reached.

[0075] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0076] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A touch detection device for an electronic fishing float, characterized in that, Including SOC chips and LED light-emitting components; The LED light-emitting component is disposed inside the float tip of the electronic fishing float, and the LED light-emitting component includes at least one LED lamp, the LED lamp having a reusable LED anode and LED cathode; The SOC chip includes an MCU, a built-in LED driver circuit, a built-in touch detection circuit, and a built-in switching circuit. The SOC chip has a first external terminal and a second external terminal. The first external terminal is electrically connected to the LED anode, and the second external terminal is electrically connected to the LED cathode. The built-in switching circuit is located inside the SOC chip and is connected between the first external terminal, the second external terminal, the built-in LED driving circuit, and the built-in touch detection circuit. The MCU is used to control the built-in switching circuit so that the first external terminal and the second external terminal are respectively connected to the built-in LED driving circuit in the driving working state, so that the LED anode and the LED cathode receive the light-emitting driving signal provided by the built-in LED driving circuit and drive the LED to emit light. And for controlling the built-in switching circuit, so that the first external terminal and the second external terminal are connected to the same detection input terminal of the built-in touch detection circuit in the touch detection state, so that the LED anode and the LED cathode form the same touch sensing terminal and perform capacitance detection; The built-in touch detection circuit is used to collect the capacitance detection signal of the touch sensing end formed by the LED anode and the LED cathode, and to provide the capacitance detection signal to the MCU; The MCU is used to determine the capacitance change of the touch sensing terminal based on the capacitance detection signal, and to control the working state of the LED light-emitting component based on the capacitance change.

2. The touch detection device for the electronic fishing float according to claim 1, characterized in that, The built-in switching circuit includes a first switch group and a second switch group; The first switch group is connected between the first external terminal, the second external terminal and the built-in touch detection circuit, so that the first external terminal and the second external terminal are connected to the same detection input terminal of the built-in touch detection circuit; The second switch group is connected between the first external terminal, the second external terminal and the built-in LED driver circuit, so that the first external terminal and the second external terminal are respectively connected to the built-in LED driver circuit.

3. The touch detection device for the electronic fishing float according to claim 2, characterized in that, In the driving operation state, the MCU controls the first switch group to open and controls the second switch group to open; In the touch detection state, the MCU controls the second switch group to turn off and controls the first switch group to turn on.

4. The touch detection device for the electronic fishing float according to claim 1, characterized in that, The MCU is used to control the switching circuit according to a preset time-sharing control cycle, such that the time-sharing control cycle includes a touch detection period and a drive operation period. During the touch detection period, the first external terminal and the second external terminal are connected to the same detection input terminal of the built-in touch detection circuit, so that the LED anode and the LED cathode together form the touch sensing terminal and are used for capacitance detection; During the driving operation period, the first external terminal and the second external terminal are respectively connected to the built-in LED driving circuit, so that the LED anode and the LED cathode are respectively connected to the LED driving circuit and used to drive the LED lamp to emit light.

5. The touch detection device for the electronic fishing float according to claim 1, characterized in that, The built-in touch detection circuit includes an amplifier circuit and an analog-to-digital converter circuit. The amplifier circuit is used to amplify the analog detection signal generated by the capacitance change of the touch sensing terminal, and the analog-to-digital converter circuit is used to convert the amplified detection signal into the capacitance detection signal.

6. The touch detection device for the electronic fishing float according to claim 1, characterized in that, The MCU is also used for: In the touch detection state, the capacitance change is determined based on the difference between the capacitance detection signal and a preset reference value; When the capacitance change is greater than a preset touch threshold, the touch gesture is identified based on at least one of the duration of the capacitance detection signal, the number of changes, and the time interval between adjacent changes. Based on the touch gesture, control the built-in switching circuit and / or the built-in LED driver circuit to control the LED light to turn on, turn off, adjust the light emission mode, adjust the light emission brightness, or switch the on / off state; And in the touch detection state, based on the capacitance change corresponding to the multiple capacitance detection signals continuously collected within the preset time window, determine whether the capacitance change shows a continuous increasing trend or a continuous decreasing trend, and determine that there is a fish biting the hook when it shows a continuous increasing trend or a continuous decreasing trend. Based on the fish biting the hook, the built-in LED driver circuit is controlled to adjust the illumination state of the LED light.

7. The touch detection device for the electronic fishing float according to claim 1, characterized in that, The electronic fishing float also includes a battery, a float tip cover, and a float body. The battery has an exposed conductive outer surface, which is electrically connected to the positive terminal of the battery. In the touch detection state, when a user touches at least one of the battery, the float tail cover, and the float body, the human body changes the equivalent capacitance of the touch sensing terminal formed by the LED anode and the LED cathode through conductive contact or dielectric capacitive coupling, causing a change in the capacitance detection signal of the touch sensing terminal.

8. The touch detection device for the electronic fishing float according to claim 6, characterized in that, The MCU is also used to put the electronic fishing float into a sleep state after the LED light is turned off according to the touch gesture. In the sleep state, the MCU controls the built-in LED driving circuit to stop outputting light-emitting driving signals to the LED, and periodically wakes up based on a low-frequency clock. During each wake-up, the MCU controls the built-in switching circuit to connect the LED anode and the LED cathode to the built-in touch detection circuit, and collects the capacitance detection signal at a sampling frequency lower than that of the normal working state.

9. The touch detection device for the electronic fishing float according to claim 6, characterized in that, The MCU is also used to filter the multiple continuously acquired capacitance detection signals and determine the capacitance change based on the filtered capacitance detection signals.

10. An electronic fishing float, characterized in that, The touch detection device includes the electronic fishing float as described in any one of claims 1 to 9.

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