CN111818704A - Programmable car lamp controller - Google Patents
Programmable car lamp controller Download PDFInfo
- Publication number
- CN111818704A CN111818704A CN202010499656.8A CN202010499656A CN111818704A CN 111818704 A CN111818704 A CN 111818704A CN 202010499656 A CN202010499656 A CN 202010499656A CN 111818704 A CN111818704 A CN 111818704A
- Authority
- CN
- China
- Prior art keywords
- module
- main processing
- power supply
- voltage
- processing module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
-
- 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
-
- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The embodiment of the application discloses a programmable car lamp controller. The technical scheme that this application embodiment provided promotes power supply's voltage through the boost module, again by the voltage reduction module with voltage adjustment to the voltage that is fit for car light module, supply power to car light module again, accessible short circuit control module carries out the short circuit control to different car lights simultaneously, realize the bright control of going out of different car lights, and the programming data through main processing module adjusts the operating parameter of boost module and voltage reduction module, thereby adjust the power supply to car light module, realize the regulation of car light module luminance, can realize the load demand of different car light products through software programming under the unchangeable condition of hardware, reduce design cost, improve the reusability of car light controller.
Description
Technical Field
The embodiment of the application relates to the field of automobile lamp control, in particular to a programmable automobile lamp controller.
Background
Through technological development for many years, the LED light source has become the mainstream of the illumination field, and compared with the traditional light source, the LED light source has the advantages of continuous improvement, high luminous efficiency, small volume and long service life.
However, parameters such as voltage and current of the LED automobile headlamps on the market are fixed parameters, and only can emit light at fixed brightness, parameters of controllers of the LED automobile headlamps on the market need to be changed through pure hardware design, and the automobile lamp controllers can only be designed and produced for one product, so that the reusability is low.
Disclosure of Invention
The embodiment of the application provides a programmable car lamp controller to realize the load requirements of different car lamps in a programming mode, and improve the reusability of the car lamp controller.
In a first aspect, an embodiment of the present application provides a programmable vehicle lamp controller, including a main processing module, a voltage boosting module, a voltage dropping module, and a short circuit control module, where:
the main processing module is in communication connection with the voltage boosting module and the voltage reducing module and is used for controlling the voltage boosting module and the voltage reducing module based on programming data;
the power supply input end of the boosting module is used for being connected with a power supply, the power supply output end of the boosting module is electrically connected with the power supply input end of the voltage reducing module, and the power supply output end of the voltage reducing module is used for being connected with a car lamp module and providing power for the car lamp module;
the car light module includes the car light of a plurality of series connections, short circuit control module with the car light correspond and with the car light is parallelly connected, short circuit control module's input signal end connect in main processing module, and be controlled by main processing module is right the car light carries out short circuit control.
Further, the short-circuit control module comprises a low-side switch device and a high-side switch device, an input signal end of the low-side switch device is connected to the main processing module, an output end of the low-side switch device is connected to an input signal end of the high-side switch device, and an output end and a common end of the high-side switch device are respectively connected to two ends of the vehicle lamp.
Further, the low-side switching element is an NPN triode, the high-side switching element is a PNP triode, a base of the low-side switching element is connected to the main processing module, an emitter is grounded, a collector is connected to a collector of the high-side switching element, and the emitter and the collector of the high-side switching element are respectively connected to two ends of the automobile lamp.
Furthermore, the programmable car lamp controller further comprises an electric potential boosting module, wherein the electric potential boosting module is connected between the high-side switching element far away from the voltage reduction module and the grounding wire and is controlled by the main processing module to be switched on or switched off.
Further, the electric potential promotes the module including the drive triode that steps up and the MOS pipe that steps up, the base of the drive triode that steps up connect in main processing module, collecting electrode and projecting pole connect respectively power and ground connection, the grid of the MOS pipe that steps up connect in the power with step up between the drive triode, the MOS pipe that steps up concatenates and keeps away from between the high side switch spare and the earth connection of step-down module, and the body diode of the MOS pipe that steps up is forward and connects the setting.
Furthermore, the boost MOS tube comprises a first NMOS tube and a second NMOS tube, the grids of the first NMOS tube and the second NMOS tube are connected between a power supply and the boost driving triode, the source electrode of the first NMOS tube is connected to a high-side switch component far away from the voltage reduction module, the drain electrode of the first NMOS tube is connected to the source electrode of the second NMOS tube, and the drain electrode of the second NMOS tube is grounded.
Furthermore, the programmable car lamp controller further comprises a communication module, wherein the communication module is in communication connection with the main processing module and is used for establishing communication connection between the main processing module and external equipment.
Further, the type of car light of car light module includes corner lamp LED, indicator LED, daytime running light LED, passing lamp LED and high beam LED, the step-down module includes two step-down formula step-down chips, a power output end of two step-down formula step-down chips is connected in the corner lamp LED of establishing ties, indicator LED and daytime running light LED, and another power output end is connected in passing lamp LED and high beam LED of establishing ties.
Furthermore, the programmable car lamp controller further comprises a power supply control module, wherein the power supply control module is connected between the power supply and the boosting module and is controlled by the main processing module to control the on-off of the power supply and the boosting module.
Further, the programmable car lamp controller further comprises an anti-reverse connection MOS tube, wherein the anti-reverse connection MOS tube is connected between the power supply and the boosting module and used for ensuring the forward connection between the power supply and the boosting module.
Further, the programmable car lamp controller further comprises a car lamp control signal input module, and the car lamp control signal input module is connected to the main processing module and used for receiving a car lamp control signal.
Further, car light controller able to programme still includes car light voltage sampling module, car light voltage sampling module with the car light correspond and connect in the car light with between the main processing module, be used for right the voltage of car light is sampled and is fed back to main processing module.
The embodiment of the application promotes power supply's voltage through the boost module, again by the voltage reduction module with voltage adjustment to the voltage that is fit for car light module, supply power to car light module again, accessible short circuit control module carries out the short circuit control to different car lights simultaneously, realize the bright control of going out of different car lights, and the programming data through the main processing module adjusts the operating parameter of boost module and voltage reduction module, thereby adjust the power supply of car light module, realize the regulation of car light module luminance, can realize the load demand of different car light products through software programming under the unchangeable condition of hardware, reduce design cost, improve the reusability of car light controller.
Drawings
Fig. 1 is a block diagram of a programmable vehicle lamp controller according to an embodiment of the present disclosure;
FIG. 2 is a schematic circuit diagram of a main processing module according to an embodiment of the present disclosure;
FIG. 3 is a schematic circuit diagram of a boost module according to an embodiment of the present disclosure;
FIG. 4 is a schematic circuit diagram of a voltage step-down module according to an embodiment of the present disclosure;
FIG. 5 is a schematic circuit diagram of a short-circuit control module according to an embodiment of the present disclosure;
fig. 6 is a schematic circuit connection diagram of a communication module provided in an embodiment of the present application;
FIG. 7 is a schematic circuit connection diagram of a power supply control module and an anti-reverse MOS transistor provided by an embodiment of the present application;
fig. 8 is a schematic circuit connection diagram of a vehicle lamp control signal input module and a vehicle lamp voltage sampling module according to an embodiment of the present application.
Reference numerals: 1. a main processing module; 2. a boost module; 3. a voltage reduction module; 4. a short circuit control module; 41. a low-side switching device; 42. a high-side switch; 5. a power supply; 6. a vehicle lamp module; 61. an automotive lamp; 7. a potential boost module; 71. a boost drive triode; 72. a boosting MOS tube; 8. a communication module; 9. a power supply control module; 10. the MOS tube is prevented from being reversely connected; 11. a vehicle lamp control signal input module; 12. and a vehicle lamp voltage sampling module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present application are shown in the drawings.
In the description of the embodiments of the present application, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Fig. 1 shows a block diagram of a programmable vehicle lamp controller according to an embodiment of the present application. The programmable vehicle lamp controller is used for controlling the vehicle lamp module. Referring to fig. 1, the programmable vehicle lamp controller includes a main processing module 1, a communication module 8, a boosting module 2, a voltage dropping module 3, and a short circuit control module 4.
The model of the main processing module 1 can be determined according to actual conditions, such as an MCU (microprogrammed control unit) microprocessor and the like. Fig. 2 is a schematic circuit connection diagram of the main processing module provided in the embodiment of the present application, and referring to fig. 1 and fig. 2, the main processing module 1 is respectively connected to the voltage boosting module 2 and the voltage reducing module 3 through the SPI interface in a communication manner. Fig. 3 shows a circuit connection schematic diagram of the voltage boosting module according to the embodiment of the present application, and fig. 4 shows a circuit connection schematic diagram of the voltage dropping module according to the embodiment of the present application. Referring to fig. 2-4, boost module 2 and buck module 3 are provided with power input end and power output end, specifically, the power input end of boost module 2 is used for inserting power supply 5 (for example, car battery), the power output end of boost module 2 is connected in the power input end of buck module 3 electrically, the power output end of buck module 3 is used for connecting car light module 6 to provide power for car light module 6. The peripheral circuits of the voltage boosting module 2 and the voltage reducing module 3 can refer to fig. 3 and fig. 4, or are configured based on the prior art, and are not described in detail in this embodiment.
The boost module 2 and the buck module 3 that this embodiment provided constitute based on programmable control's boost chip and buck chip respectively, main processing module 1 is based on programming data, communicate with boost module 2 and buck module 3 through the SPI bus, and control boost module 2 and buck module 3 (for example to the voltage of boost module 2 and the output of buck module 3, the electric current, the frequency, the dynamic control of parameters such as duty cycle), thereby control boost module 2 steps up power supply 5, and step down power supply 5 after stepping up by buck module 3 according to the load (car light module 6) condition, in order to adapt to the power consumption requirement of work of present car light module 6.
Further, the boost module 2 and the buck module 3 are internally provided with a register, the register is used for recording information such as working voltage, current, overvoltage, overcurrent and overtemperature, the main processing module 1 can read back the register states of the boost module 2 and the buck module 3 through the SPI bus to know information such as working voltage, current, overvoltage, overcurrent and overtemperature of the current car lamp module 6 in real time, and dynamically control the boost module 2 and the buck module 3 according to the information.
Specifically, pin No. 13, pin No. 15, pin No. 16, and pin No. 14 of the boost module 2 are connected to pin No. 60, pin No. 59, pin No. 54, and pin No. 53 of the main processing module 1, pin No. 18, pin No. 1, pin No. 17, and pin No. 12 of the boost module 2 are connected to pin No. 38, pin No. 39, pin No. 6, and pin No. 36 of the main processing module 1, and pin No. 1, pin No. 36, pin No. 35, pin No. 3, pin No. 4, pin No. 2, and pin No. 5 of the buck module 3 are connected to pin No. 55, pin No. 43, pin No. 42, pin No. 60, pin No. 59, pin No. 54, and pin No. 57 of the main processing module 1, respectively.
The vehicle lamp module 6 provided by the present embodiment includes a plurality of vehicle lamps 61 connected in series, where the vehicle lamps 61 are specifically LED lamps, and specifically, the types of the vehicle lamps 61 provided by the present embodiment include a corner lamp LED, a turn signal lamp LED, a daytime running lamp LED, a passing lamp LED, and a high beam lamp LED. The corner light LED, the steering light LED and the daytime running light LED are connected in series, namely the corner light LED, the steering light LED and the daytime running light LED share one power supply circuit, and the dipped headlight LED and the high beam LED are connected in series, namely the dipped headlight LED and the high beam LED share one power supply circuit. In other embodiments, each type of vehicle lamp 61 may be replaced or otherwise connected to the power supply line from the voltage reducing module 3 as needed.
Further, the voltage-reducing module 3 provided in this embodiment is configured based on a dual voltage-reducing type voltage-reducing chip, and is configured with two power output terminals (VLED 1 and VLED2 in the drawing), and VLED1 is connected to the anode of the corner light LED, and VLED2 is connected to the anode of the dipped headlight LED, so as to supply power to the corner light LED, the turn light LED, and the daytime running light LED connected in series through the power output interface VLED1, and supply power to the dipped headlight LED and the high beam LED connected in series through the corner light LED, the turn light LED, and the daytime running light LE2 connected in series through the power output interface.
The short circuit control modules 4 correspond to the automobile lamps 61 one to one and are connected in parallel with the corresponding automobile lamps 61 respectively, and the input signal ends of the short circuit control modules 4 are connected to the main processing module 1 and controlled by the main processing module 1 to perform short circuit control on the automobile lamps 61. It can be understood that, when the short circuit control module 4 short-circuits the vehicle lamp 61, the anode and cathode of the vehicle lamp 61 are short-circuited, the corresponding vehicle lamp 61 is in an off state, and when the short circuit control module does not short-circuit the vehicle lamp 61, the corresponding vehicle lamp 61 can obtain power through the voltage reduction module 3 and is in an on state.
Fig. 5 is a circuit connection schematic diagram of a short-circuit control module according to an embodiment of the present disclosure, and as shown in fig. 1 and fig. 5, the short-circuit control module 4 according to an embodiment of the present disclosure includes a low-side switch 41 and a high-side switch 42, where the low-side switch 41 and the high-side switch 42 are each provided with an input signal terminal, an output terminal, and a common terminal, and the low-side switch 41 and the high-side switch 42 control the output terminal and the common terminal to be turned on or off based on a switching signal (e.g., a level signal) received by the input signal terminal. The input signal terminal of the low-side switching device 41 is connected to the main processing module 1, the output terminal is connected to the input signal terminal of the high-side switching device 42, the common terminal is grounded, and the output terminal and the common terminal of the high-side switching device 42 are respectively connected to two terminals of the vehicle lights 61 (for example, the output terminal and the common terminal are respectively connected to the anode and the cathode of the corresponding vehicle lights 61).
Specifically, the low-side switch 41 and the high-side switch 42 provided in this embodiment are respectively an NPN transistor and a PNP transistor, a base of the low-side switch 41 is connected to an enable signal output terminal of the main processing module 1 (for example, an enable signal output terminal corresponding to the low beam LED is pin 14 of the main processing module 1), an emitter is grounded via a resistor, a collector is connected to a collector of the high-side switch 42 via a resistor, an emitter of the high-side switch 42 is connected to an anode of the corresponding vehicle lamp 61, and a collector is connected to a cathode of the corresponding vehicle lamp 61 (for example, the anode and the cathode of the low beam LED correspond to LED _ LB + and LED _ LB-). It can be understood that, when it is required to control to light the vehicle lamps 61, the main processing module 1 sends a low-level enable signal to the corresponding low-side switching device 41, the low-side switching device 41 is turned off, the corresponding high-side switching device 42 is turned off, the corresponding vehicle lamps 61 are not shorted, and the vehicle lamps 61 can be normally lighted. The specific types of the low-side switching device 41 and the high-side switching device 42 may be selected according to actual needs, such as MOS transistors, and the like, which is not limited in this application.
Further, the programmable car light controller provided in this embodiment further includes an electric potential boosting module 7, where the electric potential boosting module 7 corresponds to the power output end of the voltage-reducing module 3 and is connected to the end of the corresponding power output end, that is, the electric potential boosting module 7 is connected between the high-side switch 42 far away from the voltage-reducing module 3 and the ground line, and is controlled by the main processing module 1 to be turned on or off.
Specifically, the potential boosting module 7 includes a boosting driving transistor 71 and a boosting MOS transistor 72, the boosting driving transistor 71 provided IN this embodiment is an NPN transistor, the boosting MOS transistor 72 is an NMOS transistor, a base of the boosting driving transistor 71 is connected to the main processing module 1, a collector and an emitter are respectively connected to a power supply (VLED _ IN) and a ground, a gate of the boosting MOS transistor 72 is connected between the power supply and the boosting driving transistor 71, the boosting MOS transistor 72 is connected IN series between the high-side switch 42 far away from the voltage-reducing module 3 and the ground line, and a body diode of the boosting MOS transistor 72 is arranged IN a forward connection manner, that is, an anode of the body diode of the boosting MOS transistor 72 is connected to the collector of the high-side switch 42, and a cathode of the boosting MOS transistor.
Specifically, the boost MOS transistor 72 includes a first NMOS transistor (U6A and U9A in the figure) and a second NMOS transistor (U6B and U9B in the figure), gates of the first NMOS transistor and the second NMOS transistor are connected between the power supply and the boost driving transistor 71, a source of the first NMOS transistor is connected to a collector of the high-side switching element 42 away from the buck module 3, a drain of the first NMOS transistor is connected to a source of the second NMOS transistor, a drain of the second NMOS transistor is grounded, an anode of the body diode in the first NMOS transistor is connected to a collector of the high-side switching element 42, a cathode of the body diode in the second NMOS transistor is connected to an anode of the body diode in the second NMOS transistor, and a cathode of the body diode in the second NMOS transistor is grounded.
It can be understood that, when the vehicle lamp 61 of the last stage needs to be turned off (for example, a high beam LED or a daytime running light LED), the corresponding high-side switch 42 needs to be controlled to be turned on at this time, and since there is a voltage drop when the triode is turned on, there is a case that the high-side switch 42 operates in the amplification region, the impedance of the high-side switch 42 is large, so that the heat generation amount of the high-side switch 42 is too large, at this time, the boost MOS transistor 72 needs to be turned off, and the body diode of the boost MOS transistor 72 is used to raise the potential of the collector of the last-stage high-side switch 42, so as to prevent the high-side switch 42 from operating in the amplification region. When the high-side switch 42 corresponding to one output end of the boosting module 2 is turned off, all the automobile lamps 61 of the circuit are turned on, and the boosting module 2 is turned on (namely bypassing the body diodes) at the moment due to the loss of the body diodes of the potential boosting module 7, so that the energy loss is reduced.
Fig. 6 is a schematic circuit connection diagram of a communication module provided in the embodiment of the present application, and as shown in fig. 1 and fig. 6, the communication module 8 is communicatively connected to the main processing module 1, specifically, connected to the main processing module 1 through an SPI bus and a CAN bus, and configured to establish a communication connection between the main processing module 1 and an external device (for example, a body BCM module). The communication module 8 is powered by the power supply 5 and supplies power of a corresponding voltage level (e.g., 5V power) to the main processing module 1. It is understood that the specific type of the communication module 8 CAN be selected according to actual needs, for example, CAN transceiver, etc., and the present application is not limited thereto. Further, the main processing module 1 is also connected with a storage module EEPROM through an I2C bus, and the storage module EEPROM provides 5V power through the communication module 8.
Fig. 7 is a schematic circuit connection diagram of a power supply control module and an anti-reverse MOS transistor provided in an embodiment of the present application. As shown in fig. 1 and 7, the power supply control module 9 is connected between the power supply 5 and the boost module 2, and is controlled by the main processing module 1 to control on/off between the power supply 5 and the boost module 2. The reverse connection preventing MOS transistor 10 is connected between the power supply 5 and the voltage boosting module 2, the specific circuit connection of the reverse connection preventing MOS transistor 10 can refer to fig. 7, and the reverse connection preventing MOS transistor 10 is an NMOS transistor and is used for ensuring the forward connection between the power supply 5 and the voltage boosting module 2.
Specifically, the power supply 5 provides three power output ports (VBAT, BAT _ IN + and BAT _ IN-), the power supply control module 9 includes a PMOS transistor Q1 and an NPN transistor Q3, a drain of the PMOS transistor Q1 is connected to VBAT, a source of the PMOS transistor Q1 serves as VLED _ IN to supply power to the voltage reduction module 3, a gate of the PMOS transistor Q1 is connected to a collector of the NPN transistor Q3 through a resistor, an emitter of the NPN transistor Q3 is grounded, a base of the PMOS transistor Q3 is connected to a signal control terminal (BAT _ IN _ CTRL) of the main processing module 1, and the main processing module 1 controls on or off of the NPN transistor Q3, so as to control on or off of the PMOS transistor Q1, thereby realizing power supply control of the power supply 5 to the.
Fig. 8 is a schematic circuit connection diagram of a vehicle lamp control signal input module and a vehicle lamp voltage sampling module according to an embodiment of the present application. Only the lamp control signal input module 11 and the lamp voltage sampling module 12 for controlling and sampling the low-beam LEDs are shown in the figure, and the circuit structures of the remaining lamp control signal input modules 11 and the lamp voltage sampling module 12 are basically similar, and are not repeated in the figure.
The lamp control signal input module 11 is configured to receive a lamp control signal, the lamp control signal input module 11 includes an NPN-type transistor Q19, a base of the transistor Q19 is connected to a lamp signal control terminal (LED _ CTL _0) provided by an automobile (e.g., an automobile BCM or other control module) through a resistor, an emitter of the transistor Q _ CTL _0 is grounded, a collector of the transistor Q _ 19 is connected to a control signal input terminal (CTL _ IN _0) of the main processing module 1 and is connected to a +3.3V power supply through a resistor, the LED _ CTL _0 receives the control signal (e.g., a 12V control signal), converts the control signal into a control signal (e.g., CTL _ IN _0 of 3.3V) adapted to an isobaric level of the main processing module 1, and sends the control signal to the main processing module 1, and the main.
Further, the lamp voltage sampling module 12 is connected between the main processing module 1 and the vehicle lamp 61 and connected between the vehicle lamp 61 and the main processing module 1, and is configured to sample the voltage of the vehicle lamp 61 and feed the voltage back to the main processing module 1. Specifically, the vehicle lamp voltage sampling module 12 includes a zener diode D8, a capacitor C53, a resistor R80 and a resistor R76, one end of the capacitor C53 is connected to the sampling signal input terminal (ADC _ LB) of the main processing module 1, and is configured to feed back the voltage to the main processing module 1, an anode of the zener diode D8 is grounded, a cathode of the zener diode D8 is connected to the sampling signal input terminal of the main processing module 1, the resistor R80 is connected in parallel to the capacitor C53, one end of the resistor R76 is connected to a cathode of the zener diode D8, and the other end of the resistor R76 is connected to an anode (LED _ LB + in the.
Above-mentioned, promote power supply 5's voltage through boost module 2, again by step-down module 3 with voltage adjustment to the voltage that is fit for car light module 6, supply power to car light module 6 again, accessible short circuit control module 4 carries out the short circuit control to different car lights 61 simultaneously, realize the bright control of going out of different car lights 61, and the programming data through main processing module 1 adjusts boost module 2 and step-down module 3's operating parameter, thereby adjust the power supply to car light module 6, realize the regulation of 6 luminance of car light module, can realize the load demand of different car light products through software programming under the unchangeable condition of hardware, reduce design cost, improve the reusability of car light controller. And the high-side switch 42 is ensured to be smoothly conducted when the last-stage automobile lamp 61 is extinguished through the potential boosting module 7, the situation that the heating is too large due to the fact that the high-side switch 42 works in an amplification area is reduced, the programmable main processing module 1 is used for dynamically adjusting the boosting module 2 and the voltage reduction module 3 and reading detailed working states and fault information, multiplexing of hardware design is achieved through a programmable mode, and therefore the production design cost is reduced.
The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. The present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the claims.
Claims (10)
1. The programmable car lamp controller is characterized by comprising a main processing module (1), a boosting module (2), a voltage reduction module (3) and a short-circuit control module (4), wherein:
the main processing module (1) is communicatively connected to the voltage boosting module (2) and the voltage reducing module (3) and is used for controlling the voltage boosting module (2) and the voltage reducing module (3) based on programming data;
the power supply input end of the boosting module (2) is used for being connected with a power supply (5), the power supply output end of the boosting module (2) is electrically connected with the power supply input end of the voltage reducing module (3), and the power supply output end of the voltage reducing module (3) is used for being connected with a car lamp module (6) and providing power supply for the car lamp module (6);
the car light module (6) includes a plurality of car lights (61) of establishing ties, short circuit control module (4) with car light (61) correspond and with car light (61) are parallelly connected, the input signal end of short circuit control module (4) connect in main processing module (1), and be controlled by main processing module (1) is right car light (61) carry out the short circuit control.
2. The programmable vehicle lamp controller according to claim 1, wherein the short-circuit control module (4) comprises a low-side switch (41) and a high-side switch (42), an input signal terminal of the low-side switch (41) is connected to the main processing module (1), an output terminal of the low-side switch (41) is connected to an input signal terminal of the high-side switch (42), and an output terminal and a common terminal of the high-side switch (42) are respectively connected to two terminals of the vehicle lamp (61).
3. Programmable vehicle lamp controller according to claim 2, wherein the low-side switching device (41) is an NPN transistor, the high-side switching device (42) is a PNP transistor, the base of the low-side switching device (41) is connected to the main processing module (1), the emitter is connected to ground, the collector is connected to the collector of the high-side switching device (42), and the emitter and the collector of the high-side switching device (42) are respectively connected to two ends of the vehicle lamp (61).
4. The programmable vehicle lamp controller according to claim 3, further comprising a potential boosting module (7), wherein the potential boosting module (7) is connected between a high-side switching element (42) far away from the voltage reduction module (3) and a ground line, and is controlled by the main processing module (1) to be turned on or off.
5. The programmable car lamp controller according to claim 4, wherein the potential boosting module (7) comprises a boost driving transistor (71) and a boost MOS transistor (72), a base of the boost driving transistor (71) is connected to the main processing module (1), a collector and an emitter are respectively connected to a power supply and a ground, a gate of the boost MOS transistor (72) is connected between the power supply and the boost driving transistor (71), the boost MOS transistor (72) is connected in series between a high-side switch (42) far away from the voltage reduction module (3) and a ground line, and a body diode of the boost MOS transistor (72) is in a forward connection arrangement.
6. The programmable car light controller according to claim 5, wherein the boost MOS transistor (72) comprises a first NMOS transistor and a second NMOS transistor, the gates of the first NMOS transistor and the second NMOS transistor are connected between a power supply and the boost driving transistor (71), the source of the first NMOS transistor is connected to the high-side switch (42) far away from the buck module (3), the drain of the first NMOS transistor is connected to the source of the second NMOS transistor, and the drain of the second NMOS transistor is grounded.
7. The programmable vehicle lamp controller according to claim 1, further comprising a communication module (8), wherein the communication module (8) is communicatively connected to the main processing module (1) for establishing a communication connection between the main processing module (1) and an external device.
8. The programmable vehicle lamp controller according to claim 1, further comprising a power supply control module (9), wherein the power supply control module (9) is connected between the power supply (5) and the boost module (2), and is controlled by the main processing module (1) to control on/off between the power supply (5) and the boost module (2).
9. The programmable vehicle lamp controller according to claim 1, further comprising a vehicle lamp control signal input module (11), said vehicle lamp control signal input module (11) being connected to said main processing module (1) for receiving a vehicle lamp control signal.
10. The programmable vehicle lamp controller according to claim 1, further comprising a lamp voltage sampling module (12), wherein the lamp voltage sampling module (12) corresponds to the vehicle lamp (61) and is connected between the vehicle lamp (61) and the main processing module (1) for sampling and feeding back the voltage of the vehicle lamp (61) to the main processing module (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010499656.8A CN111818704B (en) | 2020-06-04 | 2020-06-04 | Programmable car lamp controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010499656.8A CN111818704B (en) | 2020-06-04 | 2020-06-04 | Programmable car lamp controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111818704A true CN111818704A (en) | 2020-10-23 |
| CN111818704B CN111818704B (en) | 2022-10-11 |
Family
ID=72848673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010499656.8A Active CN111818704B (en) | 2020-06-04 | 2020-06-04 | Programmable car lamp controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111818704B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113064370A (en) * | 2021-03-23 | 2021-07-02 | 苏州申博电子科技有限公司 | System and method for testing driving of automobile lamp |
| CN114245522A (en) * | 2021-12-23 | 2022-03-25 | 芜湖雄狮汽车科技有限公司 | Multifunctional microcontroller and vehicle |
| CN114913809A (en) * | 2022-03-09 | 2022-08-16 | 马瑞利汽车零部件(芜湖)有限公司 | Car light display screen control system based on Mini LED light source |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101384118A (en) * | 2008-10-18 | 2009-03-11 | 六安新宇节能科技有限公司 | Intelligent road lamp controller |
| CN101959352A (en) * | 2010-10-15 | 2011-01-26 | 上海小糸车灯有限公司 | LED driving circuit with LED short-circuit protection |
| WO2013090945A1 (en) * | 2011-12-16 | 2013-06-20 | Advanced Lighting Technologies, Inc. | Near unity power factor long life low cost led lamp retrofit system and method |
| CN204556802U (en) * | 2015-04-15 | 2015-08-12 | 上海信耀电子有限公司 | LED car lamp detector |
| CN204705835U (en) * | 2015-06-26 | 2015-10-14 | 安徽江淮汽车股份有限公司 | A kind of power-supply controller of electric of automobile-used igniting |
| CN206115707U (en) * | 2016-10-20 | 2017-04-19 | 南京交通职业技术学院 | Solar energy LED traffic light of adjustable luminance |
| CN107493622A (en) * | 2017-07-04 | 2017-12-19 | 上海小糸车灯有限公司 | Matrix LED driving control system and control method for automobile lamp |
| CN109862649A (en) * | 2017-11-30 | 2019-06-07 | 长城汽车股份有限公司 | A kind of car light driving method, car light driving device and vehicle |
| CN111225467A (en) * | 2018-11-23 | 2020-06-02 | 常州星宇车灯股份有限公司 | Car light auto-change over device and vehicle that has it |
-
2020
- 2020-06-04 CN CN202010499656.8A patent/CN111818704B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101384118A (en) * | 2008-10-18 | 2009-03-11 | 六安新宇节能科技有限公司 | Intelligent road lamp controller |
| CN101959352A (en) * | 2010-10-15 | 2011-01-26 | 上海小糸车灯有限公司 | LED driving circuit with LED short-circuit protection |
| WO2013090945A1 (en) * | 2011-12-16 | 2013-06-20 | Advanced Lighting Technologies, Inc. | Near unity power factor long life low cost led lamp retrofit system and method |
| CN204556802U (en) * | 2015-04-15 | 2015-08-12 | 上海信耀电子有限公司 | LED car lamp detector |
| CN204705835U (en) * | 2015-06-26 | 2015-10-14 | 安徽江淮汽车股份有限公司 | A kind of power-supply controller of electric of automobile-used igniting |
| CN206115707U (en) * | 2016-10-20 | 2017-04-19 | 南京交通职业技术学院 | Solar energy LED traffic light of adjustable luminance |
| CN107493622A (en) * | 2017-07-04 | 2017-12-19 | 上海小糸车灯有限公司 | Matrix LED driving control system and control method for automobile lamp |
| CN109862649A (en) * | 2017-11-30 | 2019-06-07 | 长城汽车股份有限公司 | A kind of car light driving method, car light driving device and vehicle |
| CN111225467A (en) * | 2018-11-23 | 2020-06-02 | 常州星宇车灯股份有限公司 | Car light auto-change over device and vehicle that has it |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113064370A (en) * | 2021-03-23 | 2021-07-02 | 苏州申博电子科技有限公司 | System and method for testing driving of automobile lamp |
| CN114245522A (en) * | 2021-12-23 | 2022-03-25 | 芜湖雄狮汽车科技有限公司 | Multifunctional microcontroller and vehicle |
| CN114245522B (en) * | 2021-12-23 | 2024-09-10 | 芜湖雄狮汽车科技有限公司 | Multifunctional microcontroller and vehicle |
| CN114913809A (en) * | 2022-03-09 | 2022-08-16 | 马瑞利汽车零部件(芜湖)有限公司 | Car light display screen control system based on Mini LED light source |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111818704B (en) | 2022-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111818704B (en) | Programmable car lamp controller | |
| US8773032B2 (en) | LED light source with multiple independent control inputs and interoperability | |
| CN110281839B (en) | Automobile high beam and low beam automatic control system based on Bluetooth technology | |
| CN108684111B (en) | Constant current source power supply module of self-adaptive matrix type LED headlight | |
| CN211209981U (en) | Constant current driving structure for automobile signal lamp | |
| CN207425326U (en) | The LED backlight drive circuit of head up display | |
| US10390402B2 (en) | Light-emitting element driving device, light-emitting device, and vehicle | |
| CN103561527A (en) | Dual-function LED drive circuit | |
| CN104290647A (en) | Vehicular headlamp | |
| US10728985B2 (en) | Vehicle lamp and lighting circuit | |
| KR20220048718A (en) | System for Single channel based multi-function LED lamp drive and thereof method | |
| CN114801976B (en) | High-beam and low-beam lamp control circuit | |
| CN108471656B (en) | Light source driving circuit and lighting device | |
| CN111148316A (en) | Vehicle lamp and light emitting circuit | |
| CN210899726U (en) | Trinity control interface circuit of lamps and lanterns | |
| CN210491275U (en) | Automobile headlamp drive circuit suitable for multiple LED strings | |
| CN211184358U (en) | DC/DC constant current driving device for automobile L ED steering lamp | |
| CN213167865U (en) | Auxiliary high beam control system | |
| CN209472789U (en) | LED lamp for vehicles circuit | |
| KR20170079391A (en) | Circuit topology of vehicle lamp | |
| CN110996459A (en) | Daytime running light drive circuit with dynamic effect | |
| CN111688571A (en) | Lighting device capable of realizing free switching of high beam and low beam | |
| CN102026435A (en) | Light emitting diode driving circuit | |
| CN218616437U (en) | Two-lamp type automobile high beam and low beam control circuit | |
| CN207150894U (en) | A kind of integral type single module controls circuit for lamp before full LED |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |