Handle light control circuit

Abstract

The utility model discloses a handle light control circuit, and the circuit comprises a boost circuit unit which comprises a charging and discharging branch circuit and a voltage feedback branch circuit coupled with the charging and discharging branch circuit; and the light-emitting circuit unit comprises a plurality of light-emitting circuit branches which are mutually connected in parallel, each light-emitting circuit branch comprises a light-emitting element branch and a switching tube which is connected with the light-emitting element branch in series, and the light-emitting circuit unit is coupled with the charging and discharging branch and the voltage feedback branch. The switch tube in each light-emitting circuit branch can independently control lighting and extinguishing of light in the light-emitting circuit branch, so that the flexibility of lighting and extinguishing of the handle light is improved, the probability of simultaneous lighting and extinguishing of the handle light can be reduced, the power consumption of the handle light is reduced, and meanwhile, the service life of the handle light is prolonged. The distance between light in the handle can be flexibly controlled, the probability of adhesion of light spots captured in the display end is reduced in the process that the display end captures the handle light signal, and the accuracy and efficiency of capturing the handle light signal by the display end are improved.

Description

Technical Field

[0001] The utility model embodiment relates to the field of VR technology, and in particular to a handle light control circuit. Background Art

[0002] VR (Virtual Reality) / AR (Augmented Reality) / MR (Mixed Reality) technology can provide a simulated three-dimensional digital experience, allowing us to experience any virtual or real world immersively without being constrained by our actual location.

[0003] With the rise of the VR market and the increasing number of applications for consumers, VR experience is very important. Currently, VR is mainly in the form of helmets and handles. The helmet provides vision and the handle is used to operate the helmet. The handle is equipped with multiple infrared LED lights, and the light signals emitted by these infrared lights are captured by VR head displays or external sensors to track the position and direction of the handle.

[0004] Currently, the circuit control of the handle light still needs to be improved. Utility Model Content

[0005] The problem solved by the embodiment of the utility model is to provide a handle light control circuit, which reduces the power consumption of the handle light and improves the efficiency and accuracy of tracking the handle light.

[0006] To solve the above problems, an embodiment of the utility model provides a handle light control circuit, including: a boost circuit unit, including a charging and discharging branch and a voltage feedback branch coupled to the charging and discharging branch; a light-emitting circuit unit, including a plurality of light-emitting circuit branches connected in parallel, the light-emitting circuit branch including a light-emitting element branch and a switch tube connected in series with the light-emitting element branch, and the light-emitting circuit unit is coupled to the charging and discharging branch and the voltage feedback branch.

[0007] Optionally, the light emitting element branch includes one or more light emitting elements connected in series.

[0008] Optionally, the light emitting element includes an infrared LED lamp.

[0009] Optionally, the number of the light-emitting circuit branches is greater than or equal to 2.

[0010] Optionally, the switch tube includes a first input terminal and a first output terminal; the light-emitting element branch is coupled to the first input terminal, and the first output terminal is coupled to the ground terminal.

[0011] Optionally, the switch tube includes one or both of a triode and a MOS tube.

[0012] Optionally, the charge and discharge branch includes a boost inductor, a switch controller connected in parallel with the boost inductor, and a freewheeling diode coupled to the boost inductor and the switch controller.

[0013] Optionally, the boost inductor includes a first voltage input terminal and a first voltage output terminal, the switch controller includes a second voltage input terminal and a switch node terminal, the freewheeling diode includes a second input terminal and a second output terminal, and the first voltage input terminal is coupled to the second voltage input terminal, and the first voltage output terminal is coupled to the switch node terminal and the second input terminal.

[0014] Optionally, the handle light control circuit further includes: a first smooth voltage branch, wherein the first smooth voltage branch is coupled to the first voltage input terminal and the second voltage input terminal.

[0015] Optionally, the first smoothing voltage branch includes a first capacitor.

[0016] Optionally, the voltage feedback branch includes a first voltage-dividing resistor and a second voltage-dividing resistor connected in series therewith, the first voltage-dividing resistor includes a second voltage input terminal and a second voltage output terminal, the second voltage-dividing resistor includes a third voltage input terminal and a third voltage output terminal, the second voltage input terminal is coupled to the freewheeling diode, the second voltage output terminal is coupled to the third voltage input terminal, and the third voltage output terminal is coupled to the ground terminal; the switch controller includes a feedback port, and the feedback port is coupled to the second voltage output terminal and the third voltage input terminal.

[0017] Optionally, the handle light control circuit further includes: a second smooth voltage branch, wherein the second smooth voltage branch is coupled to the freewheeling diode and the second voltage input terminal.

[0018] Optionally, the second smoothing voltage branch includes a second capacitor.

[0019] Optionally, the switch controller includes a power ground terminal, an analog ground terminal and a digital ground terminal, and the power ground terminal, the analog ground terminal and the digital ground terminal are all coupled to the ground terminal.

[0020] Compared with the prior art, the technical solution of the embodiment of the utility model has the following advantages:

[0021] The handle light control circuit provided by the embodiment of the utility model comprises a boost circuit unit including a charge-discharge branch and a voltage feedback branch coupled to the charge-discharge branch, a light-emitting circuit unit including a plurality of light-emitting circuit branches connected in parallel to each other, the light-emitting circuit branch including a light-emitting element branch and a switch tube connected in series with the light-emitting element branch, and the light-emitting circuit unit is coupled to the charge-discharge branch and the voltage feedback branch. Compared with the solution in which there is only one switch tube in the existing light-emitting circuit unit, each light-emitting circuit branch in the embodiment of the utility model has a switch tube, that is, the switch tube in each light-emitting circuit branch can be independently controlled. The lighting and extinguishing of the light in the light-emitting circuit branch increases the flexibility of lighting and extinguishing the handle light, and can reduce the probability of the handle light being lit and extinguished at the same time, thereby reducing the power consumption of the handle light. At the same time, the switch tube in each light-emitting circuit branch can independently control the lighting and extinguishing of the light in the light-emitting circuit branch, which increases the flexibility of controlling the lighting and extinguishing of the handle light, and can flexibly control the spacing between the lights in the handle. In the process of the display end (such as a helmet) capturing the handle light signal, the probability of the light spot captured in the display end being stuck is reduced, thereby improving the accuracy and efficiency of the display end in capturing the handle light signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a circuit diagram of a handle light control circuit;

[0023] Figure 2 The utility model is a circuit diagram of an embodiment of a handle light control circuit. DETAILED DESCRIPTION

[0024] As can be seen from the background technology, the current circuit control of the handle light still needs to be improved. Now, an analysis and explanation is given in combination with a handle light control circuit.

[0025] refer to Figure 1 , shows a circuit schematic diagram of a handle light control circuit.

[0026] The handle light control circuit includes: a voltage input terminal Vin; a light-emitting circuit unit 10, wherein the light-emitting circuit unit 10 includes a plurality of light-emitting circuit branches (not marked) connected in parallel with each other, and the light-emitting circuit unit 10 is coupled to the voltage input terminal Vin; a switch control unit 15, wherein the switch control unit 15 includes a switch tube S1, and the switch control unit 15 is coupled to the light-emitting circuit unit 10.

[0027] Research has found that there is only one switch tube S1 in the handle light control circuit. When the switch tube S1 is in the on state, the light-emitting elements in the light-emitting circuit unit 10 will light up at the same time, resulting in excessive power consumption of the handle light. At the same time, since the light-emitting elements in the handle are lit at the same time, the light signal emitted by the handle is too dense. In the process of the display end (such as a helmet) capturing the handle light signal, the probability of adhesion of the light spots captured in the display end is increased, and independent light spots cannot be distinguished, affecting the accuracy and efficiency of the display end in capturing the handle light signal.

[0028] In order to solve the above technical problems, an embodiment of the utility model provides a handle light control circuit, including: a boost circuit unit, including a charging and discharging branch and a voltage feedback branch coupled to the charging and discharging branch; a light-emitting circuit unit, including a plurality of light-emitting circuit branches connected in parallel with each other, the light-emitting circuit branch including a light-emitting element branch and a switch tube connected in series with the light-emitting element branch, and the light-emitting circuit unit is coupled to the charging and discharging branch and the voltage feedback branch.

[0029] In the handle light control circuit provided by the embodiment of the utility model, the boost circuit unit includes a charge and discharge branch and a voltage feedback branch coupled to the charge and discharge branch, the light-emitting circuit unit includes a plurality of light-emitting circuit branches connected in parallel, the light-emitting circuit branch includes a light-emitting element branch and a switch tube connected in series with the light-emitting element branch, and the light-emitting circuit unit is coupled to the charge and discharge branch and the voltage feedback branch. Compared with the solution in which there is only one switch tube in the existing light-emitting circuit unit, each light-emitting circuit branch in the embodiment of the utility model has a switch tube, that is, the switch tube in each light-emitting circuit branch can Independently controlling the lighting and extinguishing of the lights in the light-emitting circuit branch increases the flexibility of lighting and extinguishing the handle lights, and can reduce the probability of the handle lights being lit and extinguished at the same time, thereby reducing the power consumption of the handle lights. At the same time, the switch tube in each light-emitting circuit branch can independently control the lighting and extinguishing of the lights in the light-emitting circuit branch, increasing the flexibility of controlling the lighting and extinguishing of the handle lights, and can flexibly control the spacing between the lights in the handle. In the process of capturing the handle light signal at the display end, the probability of adhesion of the light spots captured in the display end is reduced, thereby improving the accuracy and efficiency of the display end in capturing the handle light signal.

[0030] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present utility model more obvious and easy to understand, the specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0031] Figure 2 The utility model is a circuit diagram of an embodiment of a handle light control circuit.

[0032] The handle light control circuit includes: a boost circuit unit (not marked), including a charge and discharge branch 101 and a voltage feedback branch 102 coupled to the charge and discharge branch 101; a light-emitting circuit unit 103, including a plurality of light-emitting circuit branches 1031 connected in parallel, the light-emitting circuit branch 1031 including a light-emitting element branch (not marked) and a switch tube S1 connected in series with the light-emitting element branch, and the light-emitting circuit unit 103 is coupled to the charge and discharge branch 101 and the voltage feedback branch 102.

[0033] It should be noted that each light-emitting circuit branch 1031 of the present embodiment has a switch tube S1, that is, the switch tube S1 in each light-emitting circuit branch 1031 can independently control the lighting and extinguishing of the light in the light-emitting circuit branch 1031, thereby increasing the flexibility of lighting and extinguishing the handle light, and can reduce the probability of the handle light being lit and extinguished at the same time, thereby reducing the power consumption of the handle light. At the same time, the switch tube S1 in each light-emitting circuit branch 1031 can independently control the lighting and extinguishing of the light in the light-emitting circuit branch 1031, thereby increasing the flexibility of controlling the lighting and extinguishing of the handle light, and can flexibly control the spacing between the lights in the handle. In the process of capturing the handle light signal at the display end, the probability of adhesion of the light spot captured in the display end is reduced, thereby improving the accuracy and efficiency of the display end in capturing the handle light signal.

[0034] Specifically, the boost circuit unit can increase the input voltage signal Vin to a higher output voltage signal, that is, it can convert low voltage into high voltage, thereby being able to power the light-emitting circuit unit 103 of the handle light that requires high voltage and meet the charge requirement of the light-emitting circuit unit 103.

[0035] It should be noted that the charge and discharge branch 101 in the boost circuit unit is used to store and release energy, thereby achieving the purpose of converting low voltage into high voltage. The voltage feedback branch 102 in the boost circuit unit constitutes an inverter, which can feed back the voltage output by the charge and discharge branch 101 to the charge and discharge branch 101. When the voltage output by the charge and discharge branch 101 exceeds the voltage that the light-emitting circuit unit 103 can bear, the feedback voltage in the voltage feedback branch 102 will also increase accordingly and will be fed back to the charge and discharge branch 101, thereby reducing the frequency of converting low voltage into high voltage through the charge and discharge branch 101 or directly disconnecting the charge and discharge branch 101 to reduce the output voltage of the charge and discharge branch 101, thereby protecting the light-emitting circuit unit 103 and reducing the risk of circuit failure in the handle.

[0036] In this embodiment, the charge-discharge branch 101 includes a boost inductor L1 , a switch controller 100 connected in parallel with the boost inductor L1 , and a freewheeling diode D1 coupled to the boost inductor L1 and the switch controller 100 .

[0037] Specifically, when the switch controller 100 is in the on state, the input voltage Vin is applied to the boost inductor L1, and the current begins to flow through the boost inductor L1, at which time the boost inductor L1 begins to store energy; when the switch controller 100 is in the off state, the input voltage Vin is no longer applied to the boost inductor L1, at which time the boost inductor L1 begins to release energy.

[0038] It should be noted that the switch controller 100 is responsible for controlling the switching state of the internal MOS tube. By adjusting the duty cycle of the PWM (pulse width modulation) signal, the switch controller 100 can control the rate at which the boost inductor L1 stores and releases energy, thereby adjusting the output voltage of the boost circuit unit.

[0039] It should also be noted that when the switch controller 100 is in the off state, the energy stored in the boost inductor L1 is released through the freewheeling diode D1 to prevent the current of the boost inductor L1 from suddenly changing and causing damage to the light-emitting circuit unit 103, thereby providing a stable output voltage for the light-emitting circuit unit 103.

[0040] In this embodiment, the boost inductor L1 includes a first voltage input terminal A and a first voltage output terminal B, the switch controller 100 includes a second voltage input terminal Vin and a switch node terminal SW, the freewheeling diode D1 includes a second input terminal C and a second output terminal D, and the first voltage input terminal A is coupled to the second voltage input terminal Vin, and the first voltage output terminal B is coupled to the switch node terminal SW and the second input terminal C.

[0041] Specifically, the first voltage input terminal A is coupled to the second voltage input terminal Vin, and the first voltage input terminal A and the second voltage input terminal Vin are coupled to the input voltage Vin, so that current flows through the switch controller 100 and the boost inductor L1. The switch node terminal SW is a control port of the MOS tube inside the switch controller 100, which is used to control the switching state of the MOS tube. When the switch controller 100 controls its internal MOS tube to be turned on, it means that the switch controller 100 is turned on, and the current is applied to the boost inductor L1 through the switch controller 100. The current begins to flow through the boost inductor L1. At this time, the boost inductor L1 begins to store energy. When the internal MOS tube of the switch controller 100 is disconnected, the energy stored in the boost inductor L1 will enter the freewheeling diode D1 through the second input terminal C and be output through the second output terminal D.

[0042] In this embodiment, the switch controller 100 includes a feedback port FB.

[0043] Specifically, the feedback port FB is used to receive the output voltage signal fed back from the voltage feedback branch 102, and to adjust the PWM duty cycle of the switch controller 100 through the fed back output voltage signal, thereby adjusting the output voltage of the boost circuit unit to make the output voltage of the boost circuit unit more stable.

[0044] In this embodiment, the switch controller 100 includes a power ground terminal PGND, an analog ground terminal AGND, and a digital ground terminal GND, and the power ground terminal PGND, the analog ground terminal AGND, and the digital ground terminal GND are all coupled to the ground terminal.

[0045] In this embodiment, the switch controller 100 further includes an enable port EN.

[0046] Specifically, the enable port EN can enable an external control signal to start or stop the switch controller 100, thereby controlling the boost circuit unit to be in an operating state or in a stopped state.

[0047] It should be noted that the voltage feedback branch 102 is equivalent to a voltage inverter in the boost circuit unit, and can feed back the voltage output by the charge and discharge branch 101 to the charge and discharge branch 101. When the voltage output by the charge and discharge branch 101 exceeds the voltage that the light-emitting circuit unit 103 can bear, the feedback voltage in the voltage feedback branch 102 will also increase accordingly and will be fed back to the charge and discharge branch 101, thereby reducing the frequency of converting low voltage to high voltage through the charge and discharge branch 101 or directly disconnecting the charge and discharge branch 101 to reduce the output voltage of the charge and discharge branch 101, thereby protecting the light-emitting circuit unit 103 and reducing the risk of circuit failure in the handle.

[0048] In this embodiment, the voltage feedback branch 102 includes a first voltage-dividing resistor R1 and a second voltage-dividing resistor R2 connected in series therewith, the first voltage-dividing resistor R1 includes a third voltage input terminal a and a second voltage output terminal b, the second voltage-dividing resistor R2 includes a fourth voltage input terminal c and a third voltage output terminal d, the third voltage input terminal a is coupled to the freewheeling diode D1, the fourth voltage output terminal is coupled to the third voltage input terminal a, and the third voltage output terminal d is coupled to the ground terminal.

[0049] Specifically, the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 are connected in series between the output voltage and the ground terminal. The first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 can convert the output voltage into a lower output voltage signal. The lower output voltage signal is input into the switch controller 100 through the feedback port FB, so as to adjust the PWM duty cycle of the switch controller 100, thereby adjusting the output voltage of the boost circuit unit, so that the output voltage of the boost circuit unit becomes more stable.

[0050] As an example, the second voltage output terminal b and the fourth voltage input terminal c are coupled to the feedback port FB, that is, a second voltage divider resistor R2 is arranged between the feedback port FB and the ground terminal to prevent the feedback port FB of the switch controller 100 from being directly grounded, thereby greatly reducing the probability of failure of the switch controller 100.

[0051] It should be noted that each light-emitting circuit branch 1031 has a switch tube S1, that is, the switch tube S1 in each light-emitting circuit branch 1031 can independently control the lighting and extinguishing of the light in the light-emitting circuit branch 1031, which increases the flexibility of lighting and extinguishing the handle light, and can reduce the probability of the handle light being lit and extinguished at the same time, thereby reducing the power consumption of the handle light. At the same time, the switch tube S1 in each light-emitting circuit branch 1031 can independently control the lighting and extinguishing of the light in the light-emitting circuit branch 1031, which increases the flexibility of controlling the lighting and extinguishing of the handle light, and can flexibly control the spacing between the lights in the handle. In the process of capturing the handle light signal at the display end, the probability of adhesion of the light spot captured in the display end is reduced, thereby improving the accuracy and efficiency of the display end in capturing the handle light signal.

[0052] In this embodiment, the light-emitting circuit unit 103 includes a plurality of light-emitting circuit branches 1031 connected in parallel, wherein the light-emitting circuit branch 1031 includes a light-emitting element branch and a switch tube S1 connected in series with the light-emitting element branch, and the light-emitting circuit unit 103 is coupled to the charging and discharging branch 101 and the voltage feedback branch 102.

[0053] Specifically, the light-emitting circuit branches 1031 are connected in parallel with each other, so that the voltage obtained by each light-emitting circuit branch 1031 is the same, thereby improving the uniformity of the light brightness of each light-emitting circuit branch 1031 and improving the accuracy of the display terminal in capturing the handle light signal.

[0054] It should be noted that each lighting circuit branch 1031 is provided with a switch tube S1, so that the switch tube S1 in each lighting circuit branch 1031 can independently control the lighting and extinguishing of the light in the lighting circuit branch 1031, thereby increasing the flexibility of lighting and extinguishing the handle light.

[0055] In this embodiment, the light emitting element branch includes one or more light emitting elements 120 connected in series.

[0056] In this embodiment, the light emitting element 120 includes an infrared LED lamp.

[0057] Specifically, the infrared LED light cannot be detected by human vision, which helps to reduce the interference to the user's experience when the light-emitting circuit branch 1031 is in working state.

[0058] In this embodiment, the number of the light-emitting circuit branches 1031 is greater than or equal to 2.

[0059] like Figure 1 As shown, two light-emitting circuit branches 1031 are shown. In other embodiments, other numbers of light-emitting circuit branches may be provided.

[0060] As an example, the switch tube S1 includes a first input terminal e and a first output terminal f; the light emitting element branch is coupled to the first input terminal e, and the first output terminal f is coupled to the ground terminal.

[0061] In this embodiment, the switch tube S1 includes one or both of a triode and a MOS tube.

[0062] Specifically, the triode and the MOS tube are both commonly used switch tubes S1.

[0063] In this embodiment, the handle light control circuit further includes: a first smooth voltage branch 106, and the first smooth voltage branch 106 is coupled to the first voltage input terminal A and the second voltage input terminal Vin.

[0064] It should be noted that the first smoothing voltage branch 106 is used to smooth the input voltage. By coupling the first smoothing voltage branch 106 with the first voltage input terminal A and the second voltage input terminal Vin, the influence of the fluctuation of the input voltage on the boost circuit unit can be reduced.

[0065] As an example, the first smoothing voltage branch 106 includes a first capacitor C1.

[0066] Specifically, the first capacitor C1 can filter the input signal, smooth the fluctuation of the input voltage, and reduce noise.

[0067] In this embodiment, the handle light control circuit further includes: a second smooth voltage branch 105, and the second smooth voltage branch 105 is coupled to the freewheeling diode D1 and the third voltage input terminal a.

[0068] Specifically, the second smooth voltage branch 105 is used to smooth the output voltage, and is coupled to the freewheeling diode D1 and the third voltage input terminal a through the second smooth voltage branch 105. This means that the second smooth voltage branch 105 can smooth the output voltage of the boost circuit unit and reduce the ripple of the output voltage, thereby providing a stable voltage for the light-emitting circuit unit 103, reducing the probability of voltage fluctuations in the light-emitting circuit unit 103, thereby improving the robustness of the handle light control circuit.

[0069] As an example, the second smoothing voltage branch 105 includes a second capacitor C2.

[0070] Specifically, the second capacitor C2 can filter the output signal of the boost circuit unit, smooth the fluctuation of the output voltage, and reduce noise.

[0071] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A handle light control circuit, characterized in that: include: A boost circuit unit, comprising a charge-discharge branch and a voltage feedback branch coupled to the charge-discharge branch; The light-emitting circuit unit comprises a plurality of light-emitting circuit branches connected in parallel with each other, wherein the light-emitting circuit branch comprises a light-emitting element branch and a switch tube connected in series with the light-emitting element branch, and the light-emitting circuit unit is coupled with a charge-discharge branch and a voltage feedback branch.

2. The handle light control circuit according to claim 1, characterized in that: The light emitting element branch includes one or more light emitting elements connected in series.

3. The handle light control circuit according to claim 2, characterized in that: The light emitting element comprises an infrared LED lamp.

4. The handle light control circuit according to claim 1, characterized in that: The number of the light-emitting circuit branches is greater than or equal to 2.

5. The handle light control circuit according to claim 1, characterized in that: The switch tube comprises a first input end and a first output end; The light emitting element branch is coupled to the first input terminal, and the first output terminal is coupled to the ground terminal.

6. The handle light control circuit according to claim 1, characterized in that: The switch tube includes one or both of a triode and a MOS tube.

7. The handle light control circuit according to claim 1, characterized in that: The charge and discharge branch includes a boost inductor, a switch controller connected in parallel with the boost inductor, and a freewheeling diode coupled to the boost inductor and the switch controller.

8. The handle light control circuit according to claim 7, characterized in that: The boost inductor includes a first voltage input terminal and a first voltage output terminal, the switch controller includes a second voltage input terminal and a switch node terminal, the freewheeling diode includes a second input terminal and a second output terminal, and the first voltage input terminal is coupled to the second voltage input terminal, and the first voltage output terminal is coupled to the switch node terminal and the second input terminal.

9. The handle light control circuit according to claim 8, characterized in that: The handle light control circuit further includes: a first smooth voltage branch, wherein the first smooth voltage branch is coupled to the first voltage input terminal and the second voltage input terminal.

10. The handle light control circuit according to claim 9, characterized in that: The first smoothing voltage branch includes a first capacitor.

11. The handle light control circuit according to claim 7, characterized in that: The voltage feedback branch includes a first voltage-dividing resistor and a second voltage-dividing resistor connected in series therewith, the first voltage-dividing resistor includes a second voltage input terminal and a second voltage output terminal, the second voltage-dividing resistor includes a third voltage input terminal and a third voltage output terminal, the second voltage input terminal is coupled to the freewheeling diode, the second voltage output terminal is coupled to the third voltage input terminal, and the third voltage output terminal is coupled to the ground terminal; The switch controller includes a feedback port coupled to the second voltage output terminal and the third voltage input terminal.

12. The handle light control circuit according to claim 11, characterized in that: The handle light control circuit further includes: a second smooth voltage branch, wherein the second smooth voltage branch is coupled to the freewheeling diode and the second voltage input terminal.

13. The handle light control circuit according to claim 12, characterized in that: The second smoothing voltage branch includes a second capacitor.

14. The handle light control circuit according to claim 7, characterized in that: The switch controller comprises a power ground terminal, an analog ground terminal and a digital ground terminal, and the power ground terminal, the analog ground terminal and the digital ground terminal are all coupled to the ground terminal.

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