CN112333875A - Vehicle-mounted energy-saving illuminating lamp - Google Patents

Vehicle-mounted energy-saving illuminating lamp Download PDF

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Publication number
CN112333875A
CN112333875A CN202011377334.2A CN202011377334A CN112333875A CN 112333875 A CN112333875 A CN 112333875A CN 202011377334 A CN202011377334 A CN 202011377334A CN 112333875 A CN112333875 A CN 112333875A
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CN
China
Prior art keywords
capacitor
resistor
circuit
brightness
microcontroller
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Withdrawn
Application number
CN202011377334.2A
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Chinese (zh)
Inventor
张军伟
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Bestar Holding Co ltd
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Changzhou Beisu Smart Tech Co ltd
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Priority to CN202011377334.2A priority Critical patent/CN112333875A/en
Publication of CN112333875A publication Critical patent/CN112333875A/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity of the light using optical feedback
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/34—Voltage stabilisation; Maintaining constant voltage
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention relates to an illuminating lamp, in particular to a vehicle-mounted energy-saving illuminating lamp. According to the technical scheme provided by the invention, the vehicle-mounted energy-saving illuminating lamp comprises an LED lamp group for illumination and an LED driving circuit for driving the LED lamp group; the LED lamp set comprises a switching switch circuit and a brightness sampling circuit, and is characterized by further comprising a microcontroller connected with the LED driving circuit, the microcontroller is also connected with the switching switch circuit and the brightness sampling circuit, receives brightness switching signals transmitted by the switching switch circuit and/or environment brightness information sampled by the brightness sampling circuit, and can control the LED driving circuit to drive the light emitting state of the LED lamp set according to the brightness switching signals and/or the environment brightness information, so that the light emitting state of the LED lamp set corresponds to the corresponding brightness after the brightness switching signals are switched, or the light emitting state of the LED lamp set corresponds to the environment brightness adaptation corresponding to the environment brightness information. The invention can conveniently adjust the illumination brightness, has high intelligent degree, and is safe and reliable.

Description

Vehicle-mounted energy-saving illuminating lamp
Technical Field
The invention relates to an illuminating lamp, in particular to a vehicle-mounted energy-saving illuminating lamp.
Background
At present, the lighting lamp of the engineering truck adopts lighting equipment with fixed brightness, and the function of the lighting lamp is usually only two gears of strong and weak. Under some circumstances, too weak light cannot meet the needs of a scene, and too strong illumination can play a role in illumination, but aggravates the power consumption of the lamp to a certain extent, and causes the waste of resources.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a vehicle-mounted energy-saving illuminating lamp which can conveniently adjust the illumination brightness, has high intelligent degree, and is safe and reliable.
According to the technical scheme provided by the invention, the vehicle-mounted energy-saving illuminating lamp comprises an LED lamp group for illumination and an LED driving circuit for driving the LED lamp group; the LED lamp set comprises a switching switch circuit and a brightness sampling circuit, and is characterized by further comprising a microcontroller connected with the LED driving circuit, the microcontroller is also connected with the switching switch circuit and the brightness sampling circuit, receives brightness switching signals transmitted by the switching switch circuit and/or environment brightness information sampled by the brightness sampling circuit, and can control the LED driving circuit to drive the light emitting state of the LED lamp set according to the brightness switching signals and/or the environment brightness information, so that the light emitting state of the LED lamp set corresponds to the corresponding brightness after the brightness switching signals are switched, or the light emitting state of the LED lamp set corresponds to the environment brightness adaptation corresponding to the environment brightness information.
The change-over switch circuit comprises a change-over switch and a power-on trigger circuit which is in adaptive connection with the change-over switch, and the power-on trigger circuit is connected with the input end of the microcontroller.
The bright sampling circuit comprises a bright sampler and a sampling amplifying circuit connected with the bright sampler, and the sampling amplifying circuit is connected with the output end of the microcontroller.
The LED lamp bank, the LED driving circuit, the microcontroller, the switch circuit and the brightness sampling circuit can work at required voltage.
The power supply circuit comprises a connection interface J1, wherein a first end of the connection interface J1 is connected with one ends of a power supply VE _ IN and a fuse F1, a second end of the connection interface J1 is connected with a first end of a diac T2 and one end of a capacitor C17, and a second end of the diac T2, the other end of the capacitor C17 and a third end of the connection interface J1 are all grounded;
the other end of the fuse F1 is connected to the first end of the diac T2 and the anode of the diode D3, the cathode of the zener diode D2 is connected to one end of the capacitor C18, the other end of the capacitor C18 and the second end of the diac T2 are both grounded, and the voltage VCC _ SYS can be obtained through the cathode of the zener diode D2.
The power supply circuit further comprises a triode Q1, a collector terminal of a triode Q1 is connected with one end of a capacitor C8 and one end of a resistor R10, a collector terminal of a triode Q1 is connected with one end of a resistor R11, a cathode terminal of a switching voltage stabilizing diode D2 and one end of a capacitor C7, the other end of the capacitor C8, the other end of the capacitor C7 and an anode terminal of the switching voltage stabilizing diode D2 are all grounded, and the other end of the resistor R10 and the other end of the resistor R11 are both connected with a voltage VCC _ SYS;
an emitter terminal of the triode Q1 is connected with one end of the capacitor C9 and one end of the resistor R12, a voltage VCC _ ON can be obtained through the emitter terminal of the triode Q1, the other end of the capacitor C9 is grounded, the other end of the resistor R12 is connected with an I terminal of the power management chip U2 and one end of the capacitor C10, the power management chip U2 is an AMS1117 chip, an O terminal of the power management chip U2 is connected with one end of the capacitor C11, the other end of the capacitor C10, the other end of the capacitor C11 and a G terminal of the power management chip U2 are grounded, and a voltage VCC _ DA can be obtained through the O terminal of the power management chip U2.
The transistor Q1 is an NPN transistor.
The light brightness sampling circuit comprises a photodiode LED5, wherein the cathode end of the photodiode LED5 is connected with one end of a capacitor C12, the inverting end of an operational amplifier U1A, one end of a resistor R13 and one end of a capacitor C13, and the anode end of the photodiode LED5, the other end of the capacitor C12 and the in-phase end of the operational amplifier U1A are all grounded; the other end of the resistor R13 and the other end of the capacitor C13 are both connected with the microcontroller.
The microcontroller adopts a chip with the model number of STM8S001J3M3, a PD6/PA1 end of the microcontroller is connected with the other end of a resistor R13 and the other end of a capacitor C13, a VCAP end of the microcontroller is grounded through a capacitor C15, a VSS end of the microcontroller is grounded, a VDD end of the microcontroller is connected with one end of a voltage VCC _ DA and one end of a capacitor C14, and the other end of the capacitor C14 is grounded;
the PC3/4/5 end of the microcontroller is connected with the LED driving circuit, the PA3/PB5 end of the microcontroller is connected with the emitter end of the triode Q2, the base end of the triode Q2 is connected with one end of the resistor R16 and one end of the resistor R14, the other end of the resistor R14 is connected with one end of the resistor R15 and one end of the capacitor C16, and the collector end of the triode Q2, the other end of the resistor R16 and the other end of the capacitor C16 are all grounded.
The LED driving circuit comprises a driving chip U3, the driving chip U3 is a chip with the model number of TPS92513, the VIN end of the driving chip U3 is connected with one end of a resistor R5, one end of a capacitor C3, one end of a capacitor C4 and voltage VCC _ SYS, the other end of a resistor R5 is connected with the UVLO end of the driving chip U3 and the other end of the resistor R4, and the other end of a resistor R4, the other end of the capacitor C3 and the other end of the capacitor C4 are all grounded;
the COMP end of the driving chip U3 is connected with one end of a capacitor C5, the RT/CLK end of the driving chip U3 is connected with one end of a resistor R6, and the other end of the capacitor C5, the other end of the resistor R6, the EPad end of the driving chip U3 and the GND end of the driving chip U3 are all grounded; an Iadj end of the driving chip U3 is connected with one end of the resistor R3 and one end of the capacitor C2, and the other end of the capacitor C2 is grounded; the other end of the resistor R3 is connected with the output end of the operational amplifier U1B and the inverting end of the operational amplifier U1B, the in-phase end of the operational amplifier U1B is connected with one end of the resistor R1, one end of the resistor R2 and one end of the capacitor C1, the other end of the capacitor C1 and the other end of the resistor R2 are both grounded, and the other end of the resistor R1 is connected with the voltage VCC _ DA; the PH end of the driving chip U3 is connected with one end of a capacitor C6, the cathode end of a switch diode D1 and one end of an inductor L1, the other end of the capacitor C6 is connected with the BOOT end of the driving chip U3, the anode end of the switch diode D1 is grounded, and the other end of the inductor L1 is connected with the LED lamp bank.
The invention has the advantages that: can drive the LED banks through LED drive circuit, LED drive circuit is connected with microcontroller, microcontroller still is connected with change over switch circuit and bright sampling circuit, and microcontroller receives the bright information of environment that luminance switching signal and/or bright sampling circuit sampling of change over switch circuit transmission to can be according to the luminous state of luminance switching signal and/or the bright information control LED drive circuit drive LED banks, so that the luminous state of LED banks 8 with corresponding luminance after the luminance switching signal switches over corresponds, or the luminous state of LED banks 8 and the bright adaptation of environment that the bright information of environment corresponds, thereby can conveniently adjust illumination brightness, intelligent degree is high, safe and reliable.
Drawings
FIG. 1 is a block diagram of the present invention.
FIG. 2 is a schematic diagram of a circuit of the LED driving circuit and the LED lamp set of the present invention.
Fig. 3 is a schematic circuit diagram of a portion of the power supply circuit of the present invention.
Fig. 4 is a circuit schematic of another portion of the power supply circuit of the present invention.
Fig. 5 is a circuit schematic of the light level sampling circuit of the present invention.
Description of reference numerals: the LED lamp comprises a microcontroller 1, an LED driving circuit 2, a power circuit 3, a power-on trigger circuit 4, a selector switch 5, a brightness sampler 6, a sampling amplifying circuit 7 and an LED lamp group 8.
Detailed Description
The invention is further illustrated by the following specific figures and examples.
As shown in fig. 1: in order to conveniently adjust the illumination brightness, the LED illumination lamp comprises an LED lamp group 8 for illumination and an LED driving circuit 2 for driving the LED lamp group 8; the LED lamp set comprises a microcontroller 1 connected with an LED drive circuit 2, wherein the microcontroller 1 is also connected with a change-over switch circuit and a brightness sampling circuit, the microcontroller 1 receives brightness change-over signals transmitted by the change-over switch circuit and/or environment brightness information sampled by the brightness sampling circuit, and can control the LED drive circuit 2 to drive the luminous state of an LED lamp set 8 according to the brightness change-over signals and/or the environment brightness information, so that the luminous state of the LED lamp set 8 corresponds to the corresponding brightness after the brightness change-over signals are changed over, or the luminous state of the LED lamp set 8 corresponds to the environment brightness adaptation corresponding to the environment brightness information.
Specifically, the LED lamp group 8 may include a plurality of LED lamps, and of course, other illumination forms may be adopted, which may be specifically selected according to needs. Can drive LED banks 8 work through LED drive circuit 2 to realize carrying out required illumination through LED banks 8, LED drive circuit 2 can be consistent with current mutually to the concrete drive cooperation of LED banks 8, specifically is that the drive form commonly used in this technical field is consistent, and for this technical field personnel are known, and it is no longer repeated here.
The LED drive circuit 2 is connected with the microcontroller 1, the microcontroller 1 can adopt the existing common microprocessor form, the microcontroller 1 can adjust the drive form of the LED drive circuit 2 to the LED lamp group 8, specifically, the microcontroller 1 is connected with the change-over switch circuit and the brightness sampling circuit, the change-over switch circuit can load the brightness switching signal to the microcontroller 1, the current environment brightness information can be sampled through the brightness sampling circuit, the microcontroller 1 can adjust the drive state of the LED drive circuit 2 to the LED lamp group 8 according to the brightness switching signal or the environment brightness information, namely, the control of the illumination state of the LED lamp group 8 can be realized, so that the illumination state of the LED lamp group 8 corresponds to the corresponding brightness after the brightness switching signal is switched, or the illumination state of the LED lamp group 8 corresponds to the environment brightness adaptation corresponding to the environment brightness information. In specific implementation, the light emitting state of the LED lamp set 8 corresponds to the corresponding brightness after the brightness switching signal is switched, specifically, the microcontroller 1 and the LED driving circuit 2 cooperate to enable the brightness of the LED lamp set 8 to be switched to the required brightness, and the specific light emitting brightness is related to the brightness corresponding to the brightness switching signal, which is well known to those skilled in the art. The luminous state of LED banks 8 and the bright adaptation of environment that the information corresponds of environment specifically mean when the environment is bright, microcontroller 1 and LED drive circuit 2 cooperation can make LED banks 8 be in less strong luminous state, and when current bright is darker, then microcontroller 1 and LED drive circuit 2 cooperation, can improve or increase LED banks 8's illumination intensity through microcontroller 1 and LED drive circuit 2.
Further, the change-over switch circuit comprises a change-over switch 5 and a power-on trigger circuit 4 which is connected with the change-over switch 5 in a matching manner, and the power-on trigger circuit 4 is connected with an input end of the microcontroller 1.
In the embodiment of the present invention, both the switch 5 and the power-on trigger circuit 4 may adopt the existing commonly used circuit form, and may be specifically selected according to actual needs, as long as the required brightness switching signal can be transmitted into the microcontroller 1, and details are not described here.
Further, the light sampling circuit comprises a light sampler 6 and a sampling amplification circuit 7 connected with the light sampler 6, and the sampling amplification circuit 7 is connected with the output end of the microcontroller 1.
In the embodiment of the present invention, the light sampler 6 may adopt a conventional form, such as a photodiode, the sampling amplifier circuit 7 may amplify an output signal of the light sampler 6, and the sampling amplifier circuit 7 may also adopt a conventional circuit form, which may be specifically selected as needed and will not be described herein again.
Further, the LED lamp set comprises a power circuit 3 capable of providing working power, and the power circuit 3 can provide voltages required by the operation of the LED lamp set 8, the LED driving circuit 2, the microcontroller 1, the change-over switch circuit and the light sampling circuit.
In the embodiment of the invention, the power circuit 3 can provide working power supply, namely, the power circuit 3 can provide voltages required by the work of the LED lamp group 8, the LED drive circuit 2, the microcontroller 1, the change-over switch circuit and the brightness sampling circuit, so that the electrified work of the whole illuminating lamp can be met.
As shown IN fig. 3 and 4, the power supply circuit 3 includes a connection interface J1, a first end of the connection interface J1 is connected to the power supply VE _ IN and one end of the fuse F1, a second end of the connection interface J1 is connected to a first end of the diac T2 and one end of the capacitor C17, and a second end of the diac T2, the other end of the capacitor C17 and a third end of the connection interface J1 are all grounded;
the other end of the fuse F1 is connected to the first end of the diac T2 and the anode of the diode D3, the cathode of the zener diode D2 is connected to one end of the capacitor C18, the other end of the capacitor C18 and the second end of the diac T2 are both grounded, and the voltage VCC _ SYS can be obtained through the cathode of the zener diode D2.
IN the embodiment of the present invention, the connection interface J1 may adopt an existing common form, the power supply VE _ IN is an external voltage, and the specific size may be selected according to the need. Voltage VCC _ SYS can be obtained through zener diode D2, and the specific size of voltage VCC _ SYS can be selected according to actual need as long as can satisfy specific power supply and work demand, specifically for this technical field personnel know, and it is no longer repeated here.
The power supply circuit 3 further comprises a triode Q1, a collector terminal of the triode Q1 is connected with one end of a capacitor C8 and one end of a resistor R10, the collector terminal of the triode Q1 is connected with one end of a resistor R11, a cathode terminal of a switching zener diode D2 and one end of a capacitor C7, the other end of the capacitor C8, the other end of the capacitor C7 and an anode terminal of the switching zener diode D2 are all grounded, and the other end of the resistor R10 and the other end of the resistor R11 are both connected with a voltage VCC _ SYS;
an emitter terminal of the triode Q1 is connected with one end of the capacitor C9 and one end of the resistor R12, a voltage VCC _ ON can be obtained through the emitter terminal of the triode Q1, the other end of the capacitor C9 is grounded, the other end of the resistor R12 is connected with an I terminal of the power management chip U2 and one end of the capacitor C10, the power management chip U2 is an AMS1117 chip, an O terminal of the power management chip U2 is connected with one end of the capacitor C11, the other end of the capacitor C10, the other end of the capacitor C11 and a G terminal of the power management chip U2 are grounded, and a voltage VCC _ DA can be obtained through the O terminal of the power management chip U2.
In the embodiment of the present invention, the transistor Q1 is an NPN transistor. Namely, the voltage VCC _ SYS can be used to obtain the voltage VCC _ ON and the voltage VCC _ DA respectively so as to meet specific power supply requirements.
As shown in fig. 5, the light intensity sampling circuit includes a photodiode LED5, a cathode terminal of the photodiode LED5 is connected to one end of a capacitor C12, an inverting terminal of an operational amplifier U1A, one end of a resistor R13 and one end of a capacitor C13, and an anode terminal of a photodiode LED5, the other end of the capacitor C12 and a non-inverting terminal of the operational amplifier U1A are all grounded; the other end of the resistor R13 and the other end of the capacitor C13 are both connected with the microcontroller 1.
The microcontroller 1 adopts a chip with the model number of STM8S001J3M3, a PD6/PA1 end of the microcontroller 1 is connected with the other end of a resistor R13 and the other end of a capacitor C13, a VCAP end of the microcontroller 1 is grounded through a capacitor C15, a VSS end of the microcontroller 1 is grounded, a VDD end of the microcontroller 1 is connected with a voltage VCC _ DA and one end of a capacitor C14, and the other end of the capacitor C14 is grounded;
the PC3/4/5 end of the microcontroller 1 is connected with the LED driving circuit 2, the PA3/PB5 end of the microcontroller 3 is connected with the emitter end of a triode Q2, the base end of the triode Q2 is connected with one end of a resistor R16 and one end of a resistor R14, the other end of the resistor R14 is connected with one end of the resistor R15 and one end of a capacitor C16, and the collector end of the triode Q2, the other end of the resistor R16 and the other end of the capacitor C16 are all grounded.
In the embodiment of the present invention, the photodiode LED5 is the light sampler 6, and of course, the light sampler 6 may also adopt other implementation forms, which may be specifically selected according to the needs and will not be described herein again. The positive power supply terminal of the operational amplifier U1A is connected to the voltage VCC _ DA. The photodiode LED5 and the operational amplifier 6 can constitute an opto-electronic sampling circuit. Transistor Q2 is also an NPN diode.
As shown in fig. 2, the LED driving circuit 2 includes a driving chip U3, the driving chip U3 is a chip of model number TPS92513, a VIN terminal of the driving chip U3 is connected to one terminal of a resistor R5, one terminal of a capacitor C3, one terminal of a capacitor C4, and a voltage VCC _ SYS, another terminal of a resistor R5 is connected to a UVLO terminal of the driving chip U3 and another terminal of a resistor R4, and another terminals of a resistor R4, a capacitor C3, and another terminal of a capacitor C4 are all grounded;
the COMP end of the driving chip U3 is connected with one end of a capacitor C5, the RT/CLK end of the driving chip U3 is connected with one end of a resistor R6, and the other end of the capacitor C5, the other end of the resistor R6, the EPad end of the driving chip U3 and the GND end of the driving chip U3 are all grounded; an Iadj end of the driving chip U3 is connected with one end of the resistor R3 and one end of the capacitor C2, and the other end of the capacitor C2 is grounded; the other end of the resistor R3 is connected with the output end of the operational amplifier U1B and the inverting end of the operational amplifier U1B, the in-phase end of the operational amplifier U1B is connected with one end of the resistor R1, one end of the resistor R2 and one end of the capacitor C1, the other end of the capacitor C1 and the other end of the resistor R2 are both grounded, and the other end of the resistor R1 is connected with the voltage VCC _ DA; the PH end of the driving chip U3 is connected with one end of a capacitor C6, the cathode end of a switch diode D1 and one end of an inductor L1, the other end of the capacitor C6 is connected with the BOOT end of the driving chip U3, the anode end of the switch diode D1 is grounded, and the other end of the inductor L1 is connected with the LED lamp group 8.
In the embodiment of the present invention, as for the LED lamp group 8, fig. 2 shows an LED1, an LED2, an LED3, and an LED4, of course, more LED lamps may be adopted in the LED lamp group 8, and the specific number may be selected according to the needs. In fig. 2, the other end of the inductor L1 is connected to the anode terminal of the LED2, the anode terminal of the LED3, and one end of the capacitor C7, the cathode terminal of the LED2 is connected to the anode terminal of the LED1, the cathode terminal of the LED3 is connected to the anode terminal of the LED4, the cathode terminals of the LED1, the cathode terminal of the LED4, and the other end of the capacitor C7 are connected to one end of the resistor R7, one end of the resistor R8, and one end of the resistor R9, the other end of the resistor R8 and the other end of the resistor R9 are all grounded, and the other end of the resistor R7 is connected to the ISENSE terminal of the driving chip U3.
In specific implementation, the resistor R15 is further connected to the second end of the connection interface J1, the microcontroller 1 is U4 in fig. 5, and the PC3/4/5 end of the microcontroller 1 is connected to the PDIM end of the driver chip U3, that is, the microcontroller 1 and the LED driver circuit 2 are connected and matched.

Claims (10)

1. An energy-saving lighting lamp for vehicles comprises an LED lamp group (8) for lighting and an LED drive circuit (2) for driving the LED lamp group (8); the method is characterized in that: the LED lamp set comprises a microcontroller (1) connected with an LED drive circuit (2), the microcontroller (1) is connected with a change-over switch circuit and a brightness sampling circuit, the microcontroller (1) receives brightness change-over signals transmitted by the change-over switch circuit and/or environment brightness information sampled by the brightness sampling circuit, and can control the LED drive circuit (2) to drive the luminous state of an LED lamp set (8) according to the brightness change-over signals and/or the environment brightness information, so that the luminous state of the LED lamp set (8) corresponds to the corresponding brightness after the brightness change-over signals are changed over, or the luminous state of the LED lamp set (8) is matched with the environment brightness corresponding to the environment brightness information.
2. The vehicle-mounted energy-saving illuminating lamp according to claim 1, characterized in that: the change-over switch circuit comprises a change-over switch (5) and a power-on trigger circuit (4) which is in adaptive connection with the change-over switch (5), wherein the power-on trigger circuit (4) is connected with the input end of the microcontroller (1).
3. The vehicle-mounted energy-saving illuminating lamp according to claim 1 or 2, characterized in that: the brightness sampling circuit comprises a brightness sampler (6) and a sampling amplification circuit (7) connected with the brightness sampler (6), and the sampling amplification circuit (7) is connected with the output end of the microcontroller (1).
4. The vehicle-mounted energy-saving illuminating lamp according to claim 1, characterized in that: the LED lamp bank power supply device is characterized by further comprising a power circuit (3) capable of providing a working power supply, and voltages required by the operation of the LED lamp bank (8), the LED driving circuit (2), the microcontroller (1), the switch circuit and the brightness sampling circuit can be provided through the power circuit (3).
5. The vehicle-mounted energy-saving illuminating lamp according to claim 4, characterized in that: the power supply circuit comprises a connection interface J1, wherein a first end of the connection interface J1 is connected with one ends of a power supply VE _ IN and a fuse F1, a second end of the connection interface J1 is connected with a first end of a diac T2 and one end of a capacitor C17, and a second end of the diac T2, the other end of the capacitor C17 and a third end of the connection interface J1 are all grounded;
the other end of the fuse F1 is connected to the first end of the diac T2 and the anode of the diode D3, the cathode of the zener diode D2 is connected to one end of the capacitor C18, the other end of the capacitor C18 and the second end of the diac T2 are both grounded, and the voltage VCC _ SYS can be obtained through the cathode of the zener diode D2.
6. The vehicle-mounted energy-saving illuminating lamp according to claim 5, characterized in that: the power supply circuit (3) further comprises a triode Q1, a collector terminal of a triode Q1 is connected with one end of a capacitor C8 and one end of a resistor R10, a collector terminal of a triode Q1 is connected with one end of a resistor R11, a cathode terminal of a switching zener diode D2 and one end of a capacitor C7, the other end of the capacitor C8, the other end of the capacitor C7 and an anode terminal of the switching zener diode D2 are all grounded, and the other end of the resistor R10 and the other end of the resistor R11 are both connected with a voltage VCC _ SYS;
an emitter terminal of the triode Q1 is connected with one end of the capacitor C9 and one end of the resistor R12, a voltage VCC _ ON can be obtained through the emitter terminal of the triode Q1, the other end of the capacitor C9 is grounded, the other end of the resistor R12 is connected with an I terminal of the power management chip U2 and one end of the capacitor C10, the power management chip U2 is an AMS1117 chip, an O terminal of the power management chip U2 is connected with one end of the capacitor C11, the other end of the capacitor C10, the other end of the capacitor C11 and a G terminal of the power management chip U2 are grounded, and a voltage VCC _ DA can be obtained through the O terminal of the power management chip U2.
7. The vehicle-mounted energy-saving illuminating lamp according to claim 6, characterized in that: the transistor Q1 is an NPN transistor.
8. The vehicle-mounted energy-saving illuminating lamp according to claim 1, characterized in that: the light brightness sampling circuit comprises a photodiode LED5, wherein the cathode end of the photodiode LED5 is connected with one end of a capacitor C12, the inverting end of an operational amplifier U1A, one end of a resistor R13 and one end of a capacitor C13, and the anode end of the photodiode LED5, the other end of the capacitor C12 and the in-phase end of the operational amplifier U1A are all grounded; the other end of the resistor R13 and the other end of the capacitor C13 are both connected with the microcontroller (1).
9. The vehicle-mounted energy-saving illuminating lamp according to claim 1, characterized in that: the microcontroller (1) adopts a chip with the model number of STM8S001J3M3, a PD6/PA1 end of the microcontroller (1) is connected with the other end of a resistor R13 and the other end of a capacitor C13, a VCAP end of the microcontroller (1) is grounded through a capacitor C15, a VSS end of the microcontroller (1) is grounded, a VDD end of the microcontroller (1) is connected with a voltage VCC _ DA and one end of a capacitor C14, and the other end of the capacitor C14 is grounded;
the PC3/4/5 end of the microcontroller (1) is connected with the LED drive circuit (2), the PA3/PB5 end of the microcontroller (3) is connected with the emitter end of the triode Q2, the base end of the triode Q2 is connected with one end of the resistor R16 and one end of the resistor R14, the other end of the resistor R14 is connected with one end of the resistor R15 and one end of the capacitor C16, and the collector end of the triode Q2, the other end of the resistor R16 and the other end of the capacitor C16 are all grounded.
10. The vehicle-mounted energy-saving illuminating lamp according to claim 1, characterized in that: the LED driving circuit (2) comprises a driving chip U3, the driving chip U3 is a chip with the model number of TPS92513, the VIN end of the driving chip U3 is connected with one end of a resistor R5, one end of a capacitor C3, one end of a capacitor C4 and voltage VCC _ SYS, the other end of a resistor R5 is connected with the UVLO end of the driving chip U3 and the other end of the resistor R4, and the other end of a resistor R4, the other end of the capacitor C3 and the other end of the capacitor C4 are all grounded;
the COMP end of the driving chip U3 is connected with one end of a capacitor C5, the RT/CLK end of the driving chip U3 is connected with one end of a resistor R6, and the other end of the capacitor C5, the other end of the resistor R6, the EPad end of the driving chip U3 and the GND end of the driving chip U3 are all grounded; an Iadj end of the driving chip U3 is connected with one end of the resistor R3 and one end of the capacitor C2, and the other end of the capacitor C2 is grounded; the other end of the resistor R3 is connected with the output end of the operational amplifier U1B and the inverting end of the operational amplifier U1B, the in-phase end of the operational amplifier U1B is connected with one end of the resistor R1, one end of the resistor R2 and one end of the capacitor C1, the other end of the capacitor C1 and the other end of the resistor R2 are both grounded, and the other end of the resistor R1 is connected with the voltage VCC _ DA; the PH end of the driving chip U3 is connected with one end of a capacitor C6, the cathode end of a switch diode D1 and one end of an inductor L1, the other end of the capacitor C6 is connected with the BOOT end of the driving chip U3, the anode end of the switch diode D1 is grounded, and the other end of the inductor L1 is connected with the LED lamp set (8).
CN202011377334.2A 2020-11-30 2020-11-30 Vehicle-mounted energy-saving illuminating lamp Withdrawn CN112333875A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204291499U (en) * 2014-12-12 2015-04-22 安徽理工大学 A kind of LED based on STC single-chip microcomputer drives and light modulating device
CN205185966U (en) * 2015-11-13 2016-04-27 傅森 Many mode switch's self -adaptive control car lamp
CN207321600U (en) * 2017-10-31 2018-05-04 西安科技大学 One kind self-regulation brightness cage illumination circuit
WO2018157345A1 (en) * 2017-03-02 2018-09-07 深圳市豪恩光电照明股份有限公司 Led lamp and led brightness regulation circuit
CN110234187A (en) * 2019-04-23 2019-09-13 宁波工程学院 A kind of LED constant current Drive And Its Driving Method
CN211019384U (en) * 2019-11-20 2020-07-14 蚌埠学院 Automatic control system for lighting equipment of engineering truck
CN213960360U (en) * 2020-11-30 2021-08-13 常州倍速智能科技有限公司 Vehicle-mounted energy-saving illuminating lamp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204291499U (en) * 2014-12-12 2015-04-22 安徽理工大学 A kind of LED based on STC single-chip microcomputer drives and light modulating device
CN205185966U (en) * 2015-11-13 2016-04-27 傅森 Many mode switch's self -adaptive control car lamp
WO2018157345A1 (en) * 2017-03-02 2018-09-07 深圳市豪恩光电照明股份有限公司 Led lamp and led brightness regulation circuit
CN207321600U (en) * 2017-10-31 2018-05-04 西安科技大学 One kind self-regulation brightness cage illumination circuit
CN110234187A (en) * 2019-04-23 2019-09-13 宁波工程学院 A kind of LED constant current Drive And Its Driving Method
CN211019384U (en) * 2019-11-20 2020-07-14 蚌埠学院 Automatic control system for lighting equipment of engineering truck
CN213960360U (en) * 2020-11-30 2021-08-13 常州倍速智能科技有限公司 Vehicle-mounted energy-saving illuminating lamp

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