A brightness-adjustable gear indicator lamp control system

Abstract

This application relates to a brightness-adjustable gear shift indicator control system, comprising a high-beam lamp power supply module, a backlight lamp power supply module, a high-beam lamp driver module, a backlight lamp driver module, and an indicator light module. The indicator light module includes a high-beam lamp and a backlight lamp, and all three modules are controlled and connected to a controller. The output terminal of the high-beam lamp power supply module is electrically connected to the input terminal of the high-beam lamp, and the output terminal of the high-beam lamp is electrically connected to the control terminal of the high-beam lamp driver module, which controls the high-beam lamp to turn on or off. Similarly, the output terminal of the backlight lamp power supply module is electrically connected to the input terminal of the backlight lamp, and the output terminal of the backlight lamp is electrically connected to the control terminal of the backlight lamp driver module, which controls the backlight lamp to turn on or off. This application effectively addresses the problems of uncontrollable power supply and excessive controller resource consumption in existing technologies.

Description

Technical Field

[0001] This application relates to the technical field of lighting control systems, and in particular to a brightness-adjustable gear shift indicator control system. Background Technology

[0002] In modern electronic devices, dual-color gear shift indicator lights serve as an important visual feedback element, widely used in automobiles, industrial control, and other fields. Currently, most dual-color gear shift indicator lights on the market use a single power supply. This design is simple and low-cost, but it also has some limitations. Because the power supply is uncontrollable, it restricts the flexibility and adaptability of the indicator light under different operating conditions.

[0003] Furthermore, existing dual-color indicator lights for gear shifting often rely on software control to implement the mutual exclusion strategy of backlighting and high brightness. This not only increases the complexity of the system but also consumes more controller resources, affecting the overall performance and response speed of the device. Utility Model Content

[0004] In order to solve the problems of uncontrollable power supply and excessive controller resource consumption in the prior art as much as possible, this application provides a brightness adjustable gear shift indicator control system.

[0005] The adjustable brightness gear shift indicator control system provided in this application adopts the following technical solution:

[0006] An adjustable brightness gear shift indicator control system includes a high-beam lamp power supply module, a backlight lamp power supply module, a high-beam lamp driver module, a backlight lamp driver module, and an indicator light module. The indicator light module includes a high-beam lamp and a backlight lamp. All three power supply modules are controlled and connected to a controller. The output terminal of the high-beam lamp power supply module is electrically connected to the input terminal of the high-beam lamp, and the output terminal of the high-beam lamp is electrically connected to the control terminal of the high-beam lamp driver module, which controls the high-beam lamp to turn on or off. Similarly, the output terminal of the backlight lamp power supply module is electrically connected to the input terminal of the backlight lamp, and the output terminal of the backlight lamp is electrically connected to the control terminal of the backlight lamp driver module, which also controls the backlight lamp to turn on or off.

[0007] By adopting the above technical solution, two controllable power outputs can be achieved by setting up a high-brightness lamp power supply module and a backlight lamp power supply module. Furthermore, by setting up high-brightness lamp driver modules and backlight lamp driver modules, independent control of the high-brightness lamp and backlight lamp can be realized, ensuring that the backlight lamp and high-brightness lamp are not interfered with each other, while reducing standby power consumption. In addition, the controller outputs PWM signals to the high-brightness lamp power supply module and the backlight lamp driver module to precisely adjust the brightness of the high-brightness lamp and backlight lamp. At the same time, the system design simplifies the software control logic, reduces the controller resource consumption, and improves the overall system performance and response speed.

[0008] Preferably, the high-brightness lamp power module includes a composite transistor U1. The base pin 2 of the composite transistor U1 is electrically connected to the first output terminal of the controller, the emitter pin 1 of the composite transistor U1 is grounded, the collector pin 6 of the composite transistor U1 is electrically connected to the base pin 5 of the composite transistor U1 through a resistor R2, the emitter pin 4 of the composite transistor U1 is electrically connected to the voltage output terminal of the main power supply through a resistor R1, and the collector pin 3 of the composite transistor U1 is set as the output terminal of the high-brightness lamp power module.

[0009] By adopting the above technical solution, the high-brightness lamp power supply module can achieve precise voltage control through the composite transistor U1. When the first output terminal of the controller outputs a high level, the transistors inside the composite transistor U1 conduct successively, allowing the total power supply voltage to be smoothly transmitted to the output terminal of the high-brightness lamp power supply module. This design not only improves the controllability and stability of the high-brightness lamp power supply, but also effectively avoids the impact of voltage fluctuations on the high-brightness lamp, thereby ensuring the reliability of the high-brightness lamp and the flexibility of brightness adjustment under various operating conditions.

[0010] Preferably, the high-brightness lamp power module further includes a switching transistor Q1, the control terminal of which is electrically connected to the emitter pin 4 of the composite transistor U1, the input terminal of which is electrically connected to the voltage output terminal of the main power supply, and the output terminal of which is electrically connected to the base pin 5 of the composite transistor U1.

[0011] By adopting the above technical solution, the switching transistor Q1 and resistor R1 are used to limit the current. When the output current of the main power supply voltage output terminal is large, the voltage drop of resistor R1 will increase. If the voltage drop of resistor R1 exceeds the conduction voltage of switching transistor Q1, then switching transistor Q1 will conduct. The output voltage of the main power supply voltage output terminal will be output to the base pin 5 of the composite transistor U1 through switching transistor Q1, thereby cutting off the transistor inside the composite transistor U1, and thus making the high beam power module have no voltage output.

[0012] Preferably, the backlight power module includes a composite transistor U2, with its base pin 2 electrically connected to the second output terminal of the controller, its emitter pin 1 grounded, its collector pin 6 electrically connected to its base pin 5 via resistor R4, its emitter pin 4 electrically connected to the voltage output terminal of the main power supply via resistor R3, and its collector pin 3 configured as the output terminal of the backlight power module.

[0013] By adopting the above technical solution, the backlight power module can achieve precise voltage control through the composite transistor U2. When the second output terminal of the controller outputs a high level, the transistors in the composite transistor U2 conduct in succession, so that the voltage of the total power supply is smoothly transmitted to the output terminal of the backlight power module.

[0014] Preferably, the backlight power module further includes a switching transistor Q2, the control terminal of which is electrically connected to the emitter pin 4 of the composite transistor U2, the input terminal of which is electrically connected to the voltage output terminal of the main power supply, and the output terminal of which is electrically connected to the base pin 5 of the composite transistor U2.

[0015] By adopting the above technical solution, the switching transistor Q2 combined with resistor R3 serves as a current limiter, so that when the total power supply voltage...

[0016] When the output current at the output terminal is large, the voltage drop across resistor R3 will increase; if the voltage drop across resistor R3 exceeds the switching voltage...

[0017] When the conduction voltage of transistor Q2 is reached, the switching transistor Q2 is turned on, and the output voltage of the main power supply is output to the base pin 5 of the composite transistor U2 through the switching transistor Q2, thereby turning off the transistor inside the composite transistor U2, and thus causing the backlight power module to have no voltage output.

[0018] Preferably, the high-brightness lamp driving module includes a switching transistor Q3, the third output terminal of the controller is electrically connected to the control terminal of the switching transistor Q3, the input terminal of the switching transistor Q3 is electrically connected to the output terminal of the high-brightness lamp, the output terminal of the switching transistor Q3 is grounded, and the input terminal of the switching transistor Q3 is set as the control terminal of the high-brightness lamp driving module.

[0019] By adopting the above technical solution, the signal output by the third output terminal of the controller can turn on the switching transistor Q3. When the switching transistor Q3 is turned on, the output terminal of the high beam lamp can be grounded through the switching transistor Q3, thereby turning on the high beam lamp.

[0020] Preferably, the backlight driving module includes a switching transistor Q4, the fourth output terminal of the controller is electrically connected to the control terminal of the switching transistor Q4, the input terminal of the switching transistor Q4 is electrically connected to the output terminal of the backlight, and the output terminal of the switching transistor Q4 is grounded.

[0021] By adopting the above technical solution, the signal output by the fourth output terminal of the controller can turn on the switching transistor Q4. When the switching transistor Q4 is turned on, the output terminal of the backlight can be grounded through the switching transistor Q4, thereby turning on the backlight.

[0022] Preferably, the indicator module further includes a diode D1, the negative terminal of which is electrically connected to the negative terminal of the high-brightness LED1, and the positive terminal of which is electrically connected to the positive terminal of the backlight.

[0023] By adopting the above technical solution, when the high-brightness lamp is in working condition, the negative terminal of diode D1 is grounded through the high-brightness lamp driver module, thereby pulling down the positive terminal voltage of the backlight lamp, thus turning off the backlight lamp, and further ensuring the mutual exclusion of the backlight lamp and the high-brightness lamp.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By setting up the power modules for the high-brightness lamp and the backlight lamp independently and controlling them both by the controller, the high-brightness lamp and the backlight lamp can be adjusted independently, which improves the flexibility and adaptability of the indicator lights in different working states;

[0026] 2. By placing a diode D1 between the high-brightness lamp and the backlight, the backlight is automatically turned off when the high-brightness lamp is turned on, thus achieving mutual exclusion between the backlight and the high-brightness lamp and avoiding interference and energy consumption problems caused by both working at the same time. Attached Figure Description

[0027] Figure 1 This is a schematic block diagram of an embodiment of this application;

[0028] Figure 2 This is a circuit diagram of the high beam lamp power supply module in an embodiment of this application;

[0029] Figure 3 This is a circuit diagram of the backlight power module in an embodiment of this application;

[0030] Figure 4 This is a circuit diagram of the high beam lamp driving module in an embodiment of this application;

[0031] Figure 5 This is a circuit diagram of the backlight driving module in an embodiment of this application;

[0032] Figure 6This is a circuit diagram of the indicator light module in an embodiment of this application.

[0033] Reference numerals: 1. High-beam lamp power supply module; 2. Backlight lamp power supply module; 3. High-beam lamp driver module; 4. Backlight lamp driver module; 5. Indicator light module. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] This application discloses a control system for a gear shift indicator light with adjustable brightness.

[0036] Reference Figure 1 An adjustable brightness gear shift indicator control system includes a high-beam lamp power supply module 1, a backlight lamp power supply module 2, a high-beam lamp driver module 3, a backlight lamp driver module 4, and an indicator light module 5. All four modules are controlled and connected to a controller. The output of the main power supply is electrically connected to the inputs of both the high-beam lamp power supply module 1 and the backlight lamp power supply module 2, which are also controlled and connected to the controller. The indicator light module 5 includes a high-beam lamp and a backlight lamp. The output of the high-beam lamp power supply module 1 is electrically connected to the input of the high-beam lamp, and the output of the high-beam lamp is electrically connected to the control terminal of the high-beam lamp driver module 3, which controls the high-beam lamp to turn on or off. The output of the backlight lamp power supply module 2 is electrically connected to the input of the backlight lamp, and the output of the backlight lamp is electrically connected to the control terminal of the backlight lamp driver module 4, which controls the backlight lamp to turn on or off.

[0037] Reference Figure 2 The high-brightness lamp power module 1 includes a composite transistor U1, which comprises an NPN transistor and a PNP transistor. The base, collector, and emitter of the NPN transistor are respectively set as base pin 2, collector pin 6, and emitter pin 1. The base, collector, and emitter of the PNP transistor are respectively set as base pin 5, collector pin 3, and emitter pin 4. Base pin 2 of composite transistor U1 is electrically connected to the first output terminal POWER_PWM_H of the controller. Emitter pin 1 of composite transistor U1 is grounded. Collector pin 6 of composite transistor U1 is electrically connected to base pin 5 of composite transistor U1 through resistor R2. Emitter pin 4 of composite transistor U1 is electrically connected to the voltage output terminal VCC of the main power supply through resistor R1. Collector pin 3 of composite transistor U1 is set as the output terminal HL_LED_PWM of high-brightness lamp power module 1. Furthermore, the controller's first output terminal, POWER_PWM_H, is used to output a PWM control signal, thereby controlling the brightness of the high beam.

[0038] When the controller's first output terminal POWER_PWM_H outputs a high level, the NPN transistor in the composite transistor U1 is turned on. The base of the PNP transistor in the composite transistor U1 is grounded through resistor R2 and the NPN transistor in sequence, thus turning on the PNP transistor. The voltage output terminal of the main power supply VCC can be output to the output terminal HL_LED_PWM through resistor R1 and the PNP transistor in sequence.

[0039] Based on this, the high-brightness lamp power module 1 also includes a switching transistor Q1, which in this embodiment is an NPN transistor. The base of the switching transistor Q1 is electrically connected to the emitter pin 4 of the composite transistor U1, the collector of the switching transistor Q1 is electrically connected to the base pin 5 of the composite transistor U1, and the emitter of the switching transistor Q1 is electrically connected to the voltage output terminal of the main power supply VCC. When the output current of the voltage output terminal of the main power supply VCC is large, the voltage drop across resistor R1 will increase. If the voltage drop across resistor R1 exceeds the turn-on voltage of the base-emitter junction of the switching transistor Q1, the switching transistor Q1 will turn on, and the output voltage of the voltage output terminal of the main power supply VCC will be output to the base pin 5 of the composite transistor U1 through the switching transistor Q1, thereby turning off the PNP transistor inside the composite transistor U1, and thus causing no voltage output at the output terminal HL_LED_PWM.

[0040] Furthermore, the high-brightness lamp power module 1 also includes a Zener diode Z1 and a capacitor C1. The positive terminal of the Zener diode Z1 is electrically connected to the output terminal HL_LED_PWM, and the negative terminal of the Zener diode Z1 is electrically connected to the voltage output terminal of the main power supply VCC. One end of the capacitor C1 is electrically connected to the collector pin 6 of the composite transistor U1, and the other end of the capacitor C1 is grounded. The capacitor C1 and the Zener diode Z1 are used to filter and regulate the voltage, thereby making the output voltage of the HL_LED_PWM terminal more stable.

[0041] Reference Figure 2 and Figure 3 The backlight power module 2 and the highlight power module 1 have basically the same structure, including a composite transistor U2, a switching transistor Q2, and other peripheral components. The base pin 2 of the composite transistor U2 is electrically connected to the second output terminal POWER_PWM_B of the controller, and the emitter pin 4 of the composite transistor U2 is electrically connected to the voltage output terminal of the main power supply VCC through a resistor R3. The collector of the composite transistor U2 is set as the output terminal BL_VDDC of the backlight power module 2.

[0042] Reference Figure 4The high-brightness lamp driver module 3 includes a switching transistor Q3, resistors R9, R10, and R11. In this embodiment, the switching transistor Q3 is an NPN transistor. The third output terminal P_PWM of the controller is grounded sequentially through resistors R9 and R10. The connection point of resistors R9 and R10 is electrically connected to the base of the switching transistor Q3, and the emitter of the switching transistor Q3 is grounded. The collector of the switching transistor Q3 is electrically connected to one end of resistor R11, and the other end of resistor R11 is set as the control terminal P_LED of the high-brightness lamp driver module 3.

[0043] When the controller's third output terminal P_PWM outputs a high level, the switching transistor Q3 is turned on, thereby enabling the control terminal P_LED to be grounded through resistor R11 and switching transistor Q3 in sequence.

[0044] Preferably, the high-brightness lamp driver module 3 further includes capacitors C5 and C6. One end of capacitor C5 is electrically connected to the third output terminal P_PWM of the controller, and the other end of capacitor C5 is grounded. Capacitor C5 acts as a filter and voltage regulator, improving the stability of the output voltage of the third output terminal P_PWM of the controller. Capacitor C6 can reduce voltage spikes in the switching transistor Q3 during the switching process. When the switching transistor Q3 is off, capacitor C6 can charge quickly; when the switching transistor Q3 is on, capacitor C6 can discharge quickly. This helps to smooth voltage changes and reduce the damage of voltage spikes to the switching transistor Q3.

[0045] Reference Figure 4 and Figure 5 The backlight driver module 4 and the highlight driver module 3 have basically the same structure, including a switching transistor Q4, capacitors C7 and C8. The fourth output terminal BL_PWM of the controller is grounded through resistors R12 and R13, and the connection point between resistors R12 and R13 is electrically connected to the base of the switching transistor Q4. The emitter and collector of the switching transistor Q4 are electrically connected to one end of resistor R14, and the other end of resistor R14 is set as the control terminal BL_LED_PWM of the backlight driver module 4. Furthermore, the fourth output terminal BL_PWM of the controller is used to output a PWM control signal, thereby controlling the brightness of the backlight.

[0046] refer to Figure 6The output terminal HL_LED_PWM of the high-brightness lamp power module 1 is electrically connected to the positive terminal of the high-brightness lamp LED1 through resistor R5, which limits current. The negative terminal of the high-brightness lamp LED1 is connected to the control terminal P_LED of the high-brightness lamp driver module 3. The output terminal BL_VDDC of the backlight lamp power module 2 is electrically connected to the positive terminal of the backlight lamp LED2 through resistor R7, which limits current. The negative terminal of the backlight lamp LED2 is connected to the control terminal BL_LED_PWM of the backlight lamp driver module 4. Furthermore, the indicator light module 5 includes diode D1. The positive terminal of diode D1 is electrically connected to the positive terminal of the backlight lamp LED2, and the positive terminal of diode D1 is also electrically connected to the negative terminal of the high-brightness lamp LED1. When the high-brightness lamp LED1 is in operation, the negative terminal of diode D1 is grounded through the high-brightness lamp driver module 3, thereby pulling down the voltage at the positive terminal of the backlight lamp LED2, thus turning off the backlight lamp LED2.

[0047] Preferably, the indicator module 5 further includes resistor R6, capacitor C3, resistor R8, and capacitor C4. One end of resistor R6 is electrically connected to the positive terminal of the high-brightness LED1, and the other end of resistor R6 is electrically connected to the negative terminal of the high-brightness LED1. Capacitor C3 is connected in parallel across resistor R6. Resistor R6 and capacitor C3 act as filters, thereby enabling the high-brightness LED1 to operate stably. One end of resistor R8 is electrically connected to the positive terminal of the backlight LED2, and the other end of resistor R8 is electrically connected to the negative terminal of the backlight LED2. Capacitor C4 is connected in parallel across resistor R8. Resistor R8 and capacitor C4 act as filters, thereby enabling the backlight LED2 to operate stably.

[0048] The implementation principle of a brightness-adjustable gear shift indicator control system according to an embodiment of this application is as follows: By setting up a high-brightness lamp power supply module 1 and a backlight lamp power supply module 2, two controllable power outputs can be achieved. Furthermore, by setting up a high-brightness lamp driver module 3 and a backlight lamp driver module 4, independent control of the high-brightness lamp and the backlight lamp can be achieved, ensuring that the backlight lamp and the high-brightness lamp are not interfered with, while also reducing standby power consumption. Based on this, a diode D1 can be used to achieve mutual exclusion between the high-brightness lamp and the backlight lamp. In addition, the controller outputs PWM signals to the high-brightness lamp power supply module 1 and the backlight lamp driver module 4 to precisely adjust the brightness of the high-brightness lamp and the backlight lamp. At the same time, the system design simplifies the software control logic, reduces the occupation of controller resources, and improves the overall performance and response speed of the system.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A control system for a gear shift indicator with adjustable brightness, characterized in that: The system includes a high-beam lamp power module (1), a backlight lamp power module (2), a high-beam lamp driver module (3), a backlight lamp driver module (4), and an indicator light module (5). The indicator light module (5) includes a high-beam lamp and a backlight lamp. The high-beam lamp power module (1), the backlight lamp power module (2), the high-beam lamp driver module (3), and the backlight lamp driver module (4) are all controlled and connected to a controller. The output terminal of the high-beam lamp power module (1) is electrically connected to the input terminal of the high-beam lamp, and the output terminal of the high-beam lamp is electrically connected to the control terminal of the high-beam lamp driver module (3). The high-beam lamp driver module (3) is used to control the high-beam lamp to turn on or off. The output terminal of the backlight lamp power module (2) is electrically connected to the input terminal of the backlight lamp, and the output terminal of the backlight lamp is electrically connected to the control terminal of the backlight lamp driver module (4). The backlight lamp driver module (4) is used to control the backlight lamp to turn on or off.

2. The adjustable brightness gear shift indicator control system according to claim 1, characterized in that: The high-brightness lamp power module (1) includes a composite transistor U1. The base pin 2 of the composite transistor U1 is electrically connected to the first output terminal of the controller. The emitter pin 1 of the composite transistor U1 is grounded. The collector pin 6 of the composite transistor U1 is electrically connected to the base pin 5 of the composite transistor U1 through a resistor R2. The emitter pin 4 of the composite transistor U1 is electrically connected to the voltage output terminal of the main power supply through a resistor R1. The collector pin 3 of the composite transistor U1 is set as the output terminal of the high-brightness lamp power module (1).

3. The adjustable brightness gear shift indicator control system according to claim 2, characterized in that: The high-brightness lamp power module (1) also includes a switching transistor Q1. The control terminal of the switching transistor Q1 is electrically connected to the emitter pin 4 of the composite transistor U1. The input terminal of the switching transistor Q1 is electrically connected to the voltage output terminal of the main power supply. The output terminal of the switching transistor Q1 is electrically connected to the base pin 5 of the composite transistor U1.

4. The adjustable brightness gear shift indicator control system according to claim 1, characterized in that: The backlight power module (2) includes a composite transistor U2. The base pin 2 of the composite transistor U2 is electrically connected to the second output terminal of the controller. The emitter pin 1 of the composite transistor U2 is grounded. The collector pin 6 of the composite transistor U2 is electrically connected to the base pin 5 of the composite transistor U2 through a resistor R4. The emitter pin 4 of the composite transistor U2 is electrically connected to the voltage output terminal of the main power supply through a resistor R3. The collector pin 3 of the composite transistor U2 is set as the output terminal of the backlight power module (2).

5. The adjustable brightness gear shift indicator control system according to claim 4, characterized in that: The backlight power module (2) also includes a switching transistor Q2. The control terminal of the switching transistor Q2 is electrically connected to the emitter pin 4 of the composite transistor U2. The input terminal of the switching transistor Q2 is electrically connected to the voltage output terminal of the main power supply. The output terminal of the switching transistor Q2 is electrically connected to the base pin 5 of the composite transistor U2.

6. The adjustable brightness gear shift indicator control system according to claim 1, characterized in that: The high-brightness lamp driving module (3) includes a switching transistor Q3. The third output terminal of the controller is electrically connected to the control terminal of the switching transistor Q3. The input terminal of the switching transistor Q3 is electrically connected to the output terminal of the high-brightness lamp. The output terminal of the switching transistor Q3 is grounded. The input terminal of the switching transistor Q3 is set as the control terminal of the high-brightness lamp driving module (3).

7. The adjustable brightness gear shift indicator control system according to claim 1, characterized in that: The backlight driving module (4) includes a switching transistor Q4. The fourth output terminal of the controller is electrically connected to the control terminal of the switching transistor Q4. The input terminal of the switching transistor Q4 is electrically connected to the output terminal of the backlight. The output terminal of the switching transistor Q4 is grounded.

8. The adjustable brightness gear shift indicator control system according to claim 6, characterized in that: The indicator module (5) further includes a diode D1, the negative terminal of which is electrically connected to the negative terminal of the high beam lamp, and the positive terminal of which is electrically connected to the positive terminal of the backlight lamp.

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