A supplementary lighting control circuit for a golf simulation system detector

Abstract

This utility model discloses a supplementary lighting control circuit for a golf simulation system detector, including a constant current buck regulator chip U1, a capacitor C1, an energy storage inductor L1, a Schottky diode D11, a resistor R4, and a first set of infrared LED light-emitting diode components. The SW pin of the constant current buck regulator chip U1 is connected to one end of capacitor C1, one end of energy storage inductor L1, and the negative terminal of Schottky diode D11. The other end of capacitor C1 is connected to the DOOT pin of the constant current buck regulator chip U1. The positive terminal of Schottky diode D11 is connected to ground. The other end of energy storage inductor L1 is connected in series with the CS pin of the constant current buck regulator chip U1 to form the first set of infrared LED light-emitting diode components. The CS pin of the constant current buck regulator chip U1 is connected to resistor R4, and the other end of resistor R4 is connected to ground. This circuit maintains a stable load current for the first set of infrared LED light-emitting diode components, preventing damage due to sudden current changes.

Description

Technical Field

[0001] This utility model relates to a lighting control device for a golf simulation system, and more particularly to a supplementary lighting control circuit for a golf simulation system detector. Background Technology

[0002] 1. Chinese Patent Publication No. CN221448631U discloses a camera fill light circuit, which includes multiple light-emitting components; a driving circuit; multiple switching circuits, the first terminals of the multiple switching circuits being connected to the output terminal of the driving circuit, and the second terminals of the multiple switching circuits being electrically connected to the multiple light-emitting components one by one; a control circuit, which is electrically connected to the controlled terminals of the driving circuit and the multiple switching circuits respectively; and the control circuit is used to control at least one of the switching circuits to operate, so as to conduct the path between the driving circuit and the corresponding at least one light-emitting component, and to control the driving circuit to drive at least one light-emitting component to work.

[0003] The camera fill light circuit disclosed above is not suitable for use as a fill light in a golf simulation system detector. Therefore, it is necessary to develop a fill light control circuit suitable for a golf simulation system detector, and the voltage and current must be stable during use. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a supplementary lighting control circuit for a golf simulation system detector with a reasonable structural design and stable voltage and current.

[0005] The solution to the above technical problem is as follows:

[0006] A supplementary lighting control circuit for a golf simulation system detector is characterized by comprising a constant current buck regulator chip U1, a capacitor C1, an energy storage inductor L1, a Schottky diode D11, a resistor R4, and a first set of infrared LED light-emitting diode components; the SW pin of the constant current buck regulator chip U1 is connected to one end of the capacitor C1, one end of the energy storage inductor L1, and the negative terminal of the Schottky diode D11; the other end of the capacitor C1 is connected to the DOOT pin of the constant current buck regulator chip U1; the positive terminal of the Schottky diode D11 is connected to ground; the other end of the energy storage inductor L1 is connected in series with the first set of infrared LED light-emitting diode components between the CS pin of the constant current buck regulator chip U1; the CS pin of the constant current buck regulator chip U1 is connected to the resistor R4, and the other end of the resistor R4 is connected to ground.

[0007] The beneficial effects of the supplementary lighting control circuit of the golf simulation system detector of this utility model are as follows: The first group of infrared LED light-emitting diode components of this product takes constant current buck regulator chip U1 as the core, and cooperates with energy storage inductor L1, Schottky diode D11, and current sampling resistor R4. The constant current buck regulator chip U1 drives the array of the first group of infrared LED light-emitting diode components to emit light in a buck constant current manner; the energy storage inductor L1 and resistor R4 cooperate with the constant current buck regulator chip U1, and the energy storage inductor L1 and the first group of infrared LED light-emitting diode components work together to maintain the stability of the load current and avoid damage to the first group of infrared LED light-emitting diode components due to sudden current changes; the SW pin of the constant current buck regulator chip U1 is connected to the array of the first group of infrared LED light-emitting diode components through the energy storage inductor L1, and cooperates with Schottky diode D11 to form a freewheeling circuit; the current sampling resistor R4 detects the current at the end of the first group of infrared LED light-emitting diode components, and forms a loop compensation and switch setting with the COMP pin and RON pin of the constant current buck regulator chip U1. Attached Figure Description

[0008] Figure 1 This is the circuit schematic diagram of the product of this utility model;

[0009] Figure 2 This is the circuit diagram of the product of this utility model. Detailed Implementation

[0010] like Figures 1-2 As shown: A supplementary light control circuit for a golf simulation system detector, characterized in that: it includes a constant current step-down regulator chip U1, a capacitor C1, an energy storage inductor L1, a Schottky diode D11, a resistor R4, and a first group of infrared LED light-emitting diode components;

[0011] The SW pin of the constant current buck regulator chip U1 is connected to one end of capacitor C1, one end of energy storage inductor L1, and the negative terminal of Schottky diode D11. The other end of capacitor C1 is connected to the DOOT pin of the constant current buck regulator chip U1. The positive terminal of Schottky diode D11 is connected to the ground wire. The other end of energy storage inductor L1 is connected in series with the CS pin of the constant current buck regulator chip U1 to form the first set of infrared LED light-emitting diode components.

[0012] The CS pin of the constant current buck regulator chip U1 is connected to resistor R4, and the other end of resistor R4 is connected to ground.

[0013] The first group of infrared LED light-emitting diodes in this product uses a constant current buck regulator chip U1 as its core, along with an energy storage inductor L1, a Schottky diode D11, and a current sampling resistor R4. The constant current buck regulator chip U1 drives the array of infrared LED light-emitting diodes in a buck-type constant current manner. The energy storage inductor L1 and resistor R4 work in conjunction with the constant current buck regulator chip U1 to maintain a stable load current and prevent damage to the first group of infrared LED light-emitting diodes due to sudden current changes. The SW pin of the constant current buck regulator chip U1 is connected to the array of infrared LED light-emitting diodes via the energy storage inductor L1, forming a freewheeling circuit with the Schottky diode D11. The current sampling resistor R4 detects the current at the end of the first group of infrared LED light-emitting diodes, forming a loop compensation and switching setting with the COMP and RON pins of the constant current buck regulator chip U1. The energy storage inductor L1 reduces the ripple of the first group of infrared LED light-emitting diodes and improves efficiency. The energy storage inductor L1 stores energy and filters, determining current continuity and ripple amplitude. The Schottky diode D11 provides a freewheeling path for the off-phase, reducing diode voltage drop and losses.

[0014] Current sampling and loop stabilization: The sampling resistor R4 and the compensation capacitor C1 work together to ensure closed-loop stability and fast response, reducing overshoot and ringing under pulse lighting.

[0015] Power device selection: The peak pulse current and temperature rise of capacitor C1, Schottky diode D11, and energy storage inductor L1 are matched to ensure efficiency and thermal safety margin during high duty / high frequency pulses.

[0016] The first group of infrared LED light-emitting diode components includes infrared light-emitting diodes D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, and D12.

[0017] The energy storage inductor L1, infrared LEDs D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, and D12 are connected in series.

[0018] The negative terminal of the infrared LED D12 is connected to the CS pin of the constant current buck regulator chip U1 and resistor R4.

[0019] Multiple infrared LEDs form a series LED string, which is connected to the power stage output of the constant current buck regulator chip U1 at pin CS. The negative terminal of the infrared LED D12 is connected to the current sampling resistor R4 for end current distribution. Resistor R4 converts the current of the infrared LED string into a voltage signal detected by the constant current buck regulator chip U1 at pin CS, realizing a constant current control closed loop.

[0020] The VCC pin of the constant current buck regulator chip U1 is connected to a capacitor C3, and the other end of capacitor C3 is connected to ground. The capacitor C3 connected to the VCC pin of the constant current buck regulator chip U1 is mainly used to stabilize the power supply voltage, filter noise, provide instantaneous current, and reduce electromagnetic interference.

[0021] The fill light control circuit also includes resistor R2; pin 1 of the power input terminal of the fill light control circuit is connected to the VIN and VINS pins of the constant current buck regulator chip U1 and resistor R2. The other end of resistor R2 is connected to the RON pin of the constant current buck regulator chip U1. Resistor R2 plays a role in stabilizing the power supply to the input RON pin, preventing voltage instability due to pulse fluctuations; the GND and PAD pins of the constant current buck regulator chip U1 are connected to the ground wire; the COMP pin of the constant current buck regulator chip U1 is connected to capacitor C9. The other end of capacitor C9 is connected to the ground wire. Capacitor C9 works with the constant current buck regulator chip U1 to decouple, store energy, filter, and stabilize the power supply voltage.

[0022] Constant Current Closed Loop: After the constant current buck regulator chip U1 is powered on, it compares the current signal detected by the CS pin with the internal reference using its internal error amplifier. By modulating the duty cycle of the SW pin switch, it maintains a constant current in the first group of infrared LED components. The voltage drop across the sampling resistor R4 reflects the current magnitude in real time, forming a current-type negative feedback closed loop. The COMP pin sets the loop dynamic response; the RON pin sets the switch operating parameters. The second group of infrared LED components is connected in parallel with the first group.

[0023] The fill light control circuit also includes an NMOS transistor and resistor R5. Pin 2 of the fill light control circuit's power input is connected to resistor R5 and the gate (G) of the NMOS transistor. Resistors R15 and R16 are connected in series between the drain (D) of the NMOS transistor and the DIM pin of the constant current buck regulator chip U1. Resistor R1 is connected between the drain of the NMOS transistor and pin 1 of the fill light control circuit's power input. Resistor R3 is connected to the drain of the NMOS transistor, with the other end of resistor R3 connected to ground. The source (S) of the NMOS transistor is connected to ground. The NMOS transistor is used for channel-level on / off switching, improving the flexibility and safety of the infrared LED array drive. When the NMOS transistor is turned on, a large current may be generated instantaneously, potentially damaging the constant current buck regulator chip U1 due to its inability to withstand the large current. The series resistors R15 and R16 limit the current, providing protection.

[0024] A resistor R1 is connected between pin 1 of the power input terminal of the fill light control circuit and the drain of the NMOS transistor. When the NMOS transistor is turned on, a large current may be generated instantaneously. The resistor R1 can limit the current impact on pin 1 of the power input terminal, thereby preventing voltage fluctuations at the power input terminal due to sudden current changes and avoiding affecting the voltage stability of the constant current buck regulator chip U1.

[0025] When the voltage at the DIM pin of the constant current buck regulator chip U1 is valid, the constant current buck regulator chip U1 allows the NMOS transistor to switch and outputs a constant current; when the voltage at the DIM pin of the constant current buck regulator chip U1 fails, the constant current buck regulator chip U1 suppresses the switching of the NMOS transistor, and the lamps of the first group of infrared LED light-emitting diode components are turned off. By uniformly controlling the pulse width / phase of the voltage at the DIM pin of the constant current buck regulator chip U1, it is possible to achieve synchronous lighting with the camera exposure of the golf simulation system detector during the same window period, so as to improve contrast and suppress ghosting.

[0026] The fill light control circuit also includes a constant current step-down regulator chip U2, a capacitor C4, an energy storage inductor L2, a Schottky diode D22, a resistor R8, and a second set of infrared LED light-emitting diode components;

[0027] The SW pin of the constant current buck regulator chip U2 is connected to one end of capacitor C4, one end of energy storage inductor L2, and the negative terminal of Schottky diode D22. The other end of capacitor C4 is connected to the DOOT pin of the constant current buck regulator chip U2. The positive terminal of Schottky diode D22 is connected to ground. The other end of energy storage inductor L2 is connected in series with the CS pin of the constant current buck regulator chip U2 to form a second set of infrared LED light-emitting diode components.

[0028] The CS pin of the constant current buck regulator chip U2 is connected to resistor R8, and the other end of resistor R8 is connected to ground.

[0029] The second group of infrared LED light-emitting diode components includes infrared light-emitting diodes D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, and D24.

[0030] The energy storage inductor L2, infrared LEDs D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, and D24 are connected in series.

[0031] The negative terminal of the infrared LED D24 is connected to the CS pin of the constant current buck regulator chip U2.

[0032] The VCC pin of the constant current buck regulator chip U2 is connected to capacitor C5, and the other end of capacitor C5 is connected to ground.

[0033] The power input pin 1 of the fill light control circuit is connected to the VIN and VINS pins of the constant current buck regulator chip U2 and resistor R6. The other end of resistor R6 is connected to the RON pin of the constant current buck regulator chip U2. The GND and PAD pins of the constant current buck regulator chip U2 are connected to ground. The COMP pin of the constant current buck regulator chip U2 is connected to capacitor C6, and the other end of capacitor C6 is connected to ground. The DIM pin of the constant current buck regulator chip U2 is connected to resistor R17, and the other end of resistor R17 is connected to the drain of the NMOS transistor.

[0034] The power input pin 1 of the fill light control circuit is connected to capacitors C66, C68, and C17.

Claims

1. A supplementary lighting control circuit for a golf simulation system detector, characterized in that: Includes constant current buck regulator chip U1, capacitor C1, energy storage inductor L1, Schottky diode D11, resistor R4, and the first group of infrared LED light-emitting diode components; The SW pin of the constant current buck regulator chip U1 is connected to one end of capacitor C1, one end of energy storage inductor L1, and the negative terminal of Schottky diode D11. The other end of capacitor C1 is connected to the DOOT pin of the constant current buck regulator chip U1. The positive terminal of Schottky diode D11 is connected to the ground wire. The other end of energy storage inductor L1 is connected in series with the CS pin of the constant current buck regulator chip U1 to form the first set of infrared LED light-emitting diode components. The CS pin of the constant current buck regulator chip U1 is connected to resistor R4, and the other end of resistor R4 is connected to ground.

2. The light supplement control circuit of a golf simulation system detector according to claim 1, wherein: The first group of infrared LED light-emitting diode components includes infrared light-emitting diodes D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, and D12. The energy storage inductor L1, infrared LEDs D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, and D12 are connected in series. The negative terminal of the infrared LED D12 is connected to the CS pin of the constant current buck regulator chip U1.

3. The light supplement control circuit of a golf simulation system detector according to claim 1, wherein: The VCC pin of the constant current buck regulator chip U1 is connected to capacitor C3, and the other end of capacitor C3 is connected to ground.

4. The light supplement control circuit of a golf simulation system detector according to claim 1, wherein: It also includes resistor R2; pin 1 of the power input terminal of the fill light control circuit is connected to the VIN and VINS pins of the constant current buck regulator chip U1 and resistor R2, and the other end of resistor R2 is connected to the RON pin of the constant current buck regulator chip U1; the GND and PAD pins of the constant current buck regulator chip U1 are connected to the ground wire; the COMP pin of the constant current buck regulator chip U1 is connected to capacitor C9, and the other end of capacitor C9 is connected to the ground wire.

5. The light supplement control circuit of a golf simulation system detector according to claim 4, wherein: It also includes an NMOS transistor and a resistor R5; pin 2 of the power input terminal of the fill light control circuit is connected to a resistor R5 and the gate (G) of the NMOS transistor; a resistor R15 and a resistor R16 are connected in series between the drain (D) of the NMOS transistor and the DIM pin of the constant current buck regulator chip U1; a resistor R1 is connected between the drain of the NMOS transistor and pin 1 of the power input terminal of the fill light control circuit; a resistor R3 is connected to the drain of the NMOS transistor, and the other end of the resistor R3 is connected to ground; the source (S) of the NMOS transistor is connected to ground.

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