An integrated control system for automobile combined headlights

Abstract

The present invention relates to the field of vehicle lighting control, and specifically discloses an integrated control system for automobile combination headlights, comprising an input module, a control module, an output module, an LED module and a plug-in module, wherein the output module comprises a plurality of photoelectric MOS tubes, and specifically, the input module transmits a control signal to the control module, and the control module adjusts the on / off state and the duty cycle of each photoelectric MOS tube according to the control signal, thereby achieving the effect of switching the conduction state of each LED in the LED module, so that the present invention can realize the switching of different lamp circuit functions in the same LED module, and at the same time, although the present invention integrates a plurality of LED lamp circuits in the same LED module, even if a certain LED fails, it will not affect the operation of other LED lamp circuits, and the streamlined circuit also reduces the overall wiring of the system, which greatly facilitates production and after-sales maintenance.

Description

Technical Field

[0001] The invention relates to the field of vehicle lighting control, and in particular to an integrated control system for a vehicle combined headlight. Background Art

[0002] Today's automobile lighting circuits usually use a single-wire system, which controls the output power through a switch to control the lights. The lights of a car are divided into the front and rear parts. The front lights are composed of clearance lights, high beams, low beams, turn signals, and fog lights; the rear lights are composed of taillights, brake lights, reversing lights, turn signals, and rear fog lights. Each light is controlled by the power line output by its own switch, which will result in a large number of wiring harnesses, complex installation arrangements, and a large number of interfaces, which will lead to a high failure rate. At the same time, each wiring harness needs to be concealed to the corresponding working position. Not only are there many lines, it is troublesome to conceal, and once there is a problem on the line, it is difficult to check. And too many lines are also prone to voltage drops. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes an integrated control system for automobile combination headlights, which is characterized by comprising an input module, a control module, an output module, an LED module and a plug-in module, wherein:

[0004] An input module, used for transmitting control signals to the control module and the LED module;

[0005] A control module, used for outputting a corresponding working signal according to a control signal;

[0006] An output module, used for switching the conduction state of the LED module according to a working signal;

[0007] The LED module is used to switch the working state according to the control signal in different conduction states;

[0008] The plug-in module includes a first plug-in module and a second plug-in module, and is used to connect an external device or receive a control signal.

[0009] Furthermore, in the above modules:

[0010] The control module includes a first control chip U1, which has first to fourteenth pins and is connected to the input module and the output module;

[0011] The voltage stabilizing module includes a second control chip U2, which has first to third pins;

[0012] The LED module includes a fifth light emitting diode LED5 to a twentieth light emitting diode LED20 and a third control chip U3, wherein the third control chip U3 includes first to fourteenth pins;

[0013] The first row of plug-in modules includes first to twenty-sixth plug-in sockets, and the second row of plug-in modules includes first to fifth plug-in sockets.

[0014] Furthermore, the input module includes a low beam signal input circuit, a daytime running light signal input circuit, a position light signal input circuit and a high beam signal input circuit, wherein:

[0015] The low beam signal input circuit includes a first diode D1, the cathode of the first diode D1 is simultaneously connected to the first and second jacks of the first plug-in module and the anode of the fourth voltage regulator diode Z4, the cathode of the fourth voltage regulator diode Z4 is grounded, and the anode of the first diode D1 is connected to the seventh resistor R7; the other end of the seventh resistor R7 is simultaneously connected to the eighth resistor R8, the fourth capacitor C4 and the second pin of the first control chip U1, and the other ends of the eighth resistor R8 and the fourth capacitor C4 are grounded;

[0016] The daytime running light signal input circuit includes a fourth diode D4, the cathode of the fourth diode D4 is simultaneously connected to the anode of the fifth voltage stabilizing diode Z5 and the eighteenth socket of the first power strip module, and the anode is connected to one end of the first resistor R1; the other end of the first resistor R1 is simultaneously connected to the second resistor R2, the first capacitor C1 and the third pin of the first control chip U1, and the other ends of the second resistor R2 and the first capacitor C1 are grounded;

[0017] The position light signal input circuit includes a third diode D3, the cathode of the third diode D3 is connected to the seventh pin of the first power strip module, and the anode is connected to the third resistor R3; the other end of the third resistor R3 is simultaneously connected to the fourth resistor R4, the second capacitor C2 and the fifth pin of the first control chip U1;

[0018] The high beam signal input circuit includes a second diode D2, the cathode of the second diode D2 is simultaneously connected to the fourth and fifth jacks of the first plug-in module and the anode of the sixth voltage-stabilizing diode Z6, the cathode of the sixth voltage-stabilizing diode Z6 is grounded, and the anode of the second diode D2 is connected to the fifth resistor R5; the other end of the fifth resistor R5 is simultaneously connected to the sixth resistor R6, the third capacitor C3 and the sixth pin of the first control chip U1, and the other ends of the sixth resistor R6 and the third capacitor C3 are grounded.

[0019] Furthermore, in the LED module:

[0020] The fifth to seventh light emitting diodes are connected in series to form a first series light emitting diode group, the eighth to tenth light emitting diodes are connected in series to form a second series light emitting diode group, the eleventh to thirteenth light emitting diode groups are connected in series to form a third series light emitting diode group, the fourteenth to sixteenth light emitting diodes are connected in series to form a fourth series light emitting diode group, and the seventeenth to twentieth light emitting diodes are connected in series in sequence to form a fifth series light emitting diode group;

[0021] The first to fourth series light-emitting diode groups are connected in parallel to form a sixth parallel light-emitting diode group, the anode end of the sixth parallel light-emitting diode group is connected to the thirteenth pin of the third control chip U3, and the cathode of the sixth parallel light-emitting diode group is connected to the anode of the fifth series light-emitting diode group; the cathode of the fifth series light-emitting diode group is simultaneously connected to the eighteenth capacitor C18 to the twenty-first capacitor C21, the other ends of the eighteenth to the twenty-first capacitors are simultaneously connected in parallel to the tenth resistor R10 and the fourteenth pin of the third control chip U3, and the other end of the tenth resistor R10 is connected to the twelfth pin of the third control chip U3;

[0022] The first pin of the third control chip U3 is connected to ground through the fifteenth capacitor C15 and the twenty-eighth resistor R28 in sequence; the second pin is connected to the fourteenth resistor R14 and the fifteenth resistor R15 at the same time, the other end of the fifteenth resistor R15 is grounded, and the other end of the fourteenth resistor R14 is connected to the cathode of the fifth series light-emitting diode group; the third pin is connected to the sixteenth capacitor C16 and the eighth pin of the third control chip U3 at the same time; the fourth pin is grounded through the eleventh resistor R11; the fifth pin is grounded; the sixth pin is connected to the fortieth capacitor C40 and the thirty-fifth resistor R35 at the same time, and the other ends of the fortieth capacitor C40 and the thirty-fifth resistor R35 are grounded;

[0023] The seventh pin of the third control chip U3 is simultaneously connected to the thirty-second capacitor C32, the forty-fifth capacitor C45, the forty-sixth capacitor C46, ​​the tenth resistor R10 and the second inductor L2, the other ends of the thirty-second capacitor C32, the forty-fifth capacitor C45 and the forty-sixth capacitor C46 are grounded, the other end of the tenth resistor R10 is connected to the twelfth pin of the third control chip U3, and the other end of the second inductor L2 is connected to the cathode of the tenth diode D2; the anode of the tenth diode D2 is simultaneously connected to the forty-fourth capacitor C44 and the cathode of the fifth series light-emitting diode group, and the other end of the forty-fourth capacitor C44 is grounded;

[0024] The eighth pin of the third control chip U3 is grounded through the seventeenth capacitor C17; the ninth pin is connected to the gate of the sixth field effect transistor Q6 through the twelfth resistor R12, the source of the sixth field effect transistor Q6 is grounded through the thirteenth resistor R13, and the drain is simultaneously connected to the cathode of the tenth diode D10 and the fortieth resistor R40, and the other end of the fortieth resistor R40 is grounded through the fortieth capacitor C40; the tenth pin is grounded; the eleventh pin is grounded through the thirteenth resistor R13; the thirteenth pin is connected to the fourteenth pin through the ninth resistor R9.

[0025] Further, the output module includes first to fifth photoelectric MOS tubes, each including first to fourth pins, wherein:

[0026] The first pins of the first photo MOS tube Q1, the second photo MOS tube Q2 and the third photo MOS tube Q3 are connected to the tenth pin of the first control chip U1 through the forty-third resistor R43, the thirty-sixth resistor R36 and the thirty-third resistor R33 respectively; the first pin of the fourth photo MOS tube Q4 is connected to the ninth pin of the first control chip U1 through the thirty-second resistor R32, and the first pin of the fifth photo MOS tube Q5 is connected to the eighth pin of the first control chip U1 through the thirty-first resistor R31; the second pins of the first to fifth photo MOS tubes are all grounded;

[0027] The third pin of the third photoelectric MOS tube is connected to the anode of the sixth parallel light emitting diode group, and the fourth pin is connected to the anode of the sixth parallel light emitting diode group;

[0028] The third pin is connected to the cathode of the eighteenth light emitting diode LED18, and the fourth pin is connected to the anode of the fifth series light emitting diode group; the third pin of the fifth photoelectric MOS tube is connected to the anode of the nineteenth light emitting diode LED19, and the fourth pin is connected to the cathode of the fifth series light emitting diode group;

[0029] The third pin of the third photo MOS tube is also connected to the cathode of the ninth polarized capacitor C9 and the third pins of the first and second photo MOS tubes, and the anode of the ninth polarized capacitor C9 is connected to the fourth pins of the first to third photo MOS tubes.

[0030] Furthermore, it also includes a voltage stabilizing module for providing chip voltage to the control module and the LED module, wherein:

[0031] The first pin of the second control chip U2 is also the anode of the fifth capacitor C5 to the seventh capacitor C7, and the fifth diode D5 to the eighth diode D8, the other ends of the fifth to seventh capacitors are grounded respectively, the cathode of the fifth diode D5 is connected to the first and second sockets of the first row of plug-in modules, the cathode of the sixth diode D6 is connected to the fourth and fifth sockets of the first row of plug-in modules, the cathode of the seventh diode D7 is connected to the seventh socket of the first row of plug-in modules, and the cathode of the eighth diode D8 is connected to the eighteenth socket of the first row of plug-in modules;

[0032] The first pin of the second control chip U2 is also connected to the anode of the third voltage zener diode Z3, the forty-seventh capacitor C47 and the forty-second resistor R42, and the other ends of the third voltage zener diode Z3 and the forty-seventh capacitor C47 are grounded; the other end of the forty-second resistor R42 is connected to the forty-eighth capacitor C48 and the cathode of the ninth diode D9, and the other end of the forty-eighth capacitor C48 is grounded; the anode of the ninth diode D9 is connected to the eleventh capacitor C11, the twelfth capacitor C12 and the first inductor L1, and the other ends of the eleventh and twelfth capacitors are grounded; the other end of the first inductor L1 is connected to the thirteenth capacitor C13, the fourteenth capacitor C14, the tenth resistor R10 and the fourteenth pin of the third control chip U3, the other ends of the thirteenth and fourteenth capacitors are grounded, and the other end of the tenth resistor R10 is connected to the twelfth pin of the third control chip U3;

[0033] The second pin of the second control chip U2 is grounded; the third pin is connected to the eighth capacitor C8, the ninth capacitor C9 and the first pin of the first control chip U1 at the same time.

[0034] Furthermore, the first jack of the second row of plug-in modules is connected to the fourth pin of the first control chip U1; the second jack is connected to the first pin of the first control chip U1; the third jack is grounded; the fourth jack is connected to the thirteenth pin of the first control chip U1; and the fifth jack is connected to the fourteenth pin of the first control chip U1.

[0035] Compared with the prior art, the present invention has at least the following beneficial effects:

[0036] The present invention changes the conduction state of each photoelectric MOS tube by adjusting the duty cycle thereof, thereby switching the working state (bypass or conduction) of the LED, so that the present invention can realize the switching of different lamp circuit functions in the same LED module, without having to realize different lamp circuit functions by setting multiple control chips and LED modules, thereby reducing system wiring; and the system, although the multiple LED lamp circuits are integrated into the same LED module, even if a light emitting diode LED fails, it will not affect the operation of other LED lamp circuits;

[0037] At the same time, the present invention reduces the number of wiring harnesses of the vehicle lighting system, so that when a circuit failure occurs, maintenance personnel can more easily check the location of the fault, and the fewer wiring harnesses also reduce the overall burden on the vehicle battery, which is beneficial to the maintenance of the vehicle battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The module schematic diagram of an integrated control system for a vehicle combination headlight;

[0039] Figure 2It is an overall schematic diagram of the input module, control module and output module;

[0040] Figure 3 This is a schematic diagram of the voltage stabilization module;

[0041] Figure 4 is a schematic diagram of an LED module;

[0042] Figure 5 is a schematic diagram of a first plug-in module;

[0043] Figure 6 Schematic diagram of the second plug-in module. DETAILED DESCRIPTION

[0044] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0045] Embodiment 1

[0046] like Figure 1 As shown, in order to solve the problem of complex and redundant circuits of existing automobile lamp lines, the present invention proposes an integrated control system for automobile combination headlights, including an input module, a voltage stabilizing module, a control module, an output module, an LED module and a plug-in module, wherein:

[0047] An input module, used for transmitting control signals to the control module and the LED module;

[0048] A control module, used for outputting a corresponding working signal according to a control signal;

[0049] An output module, used for switching the conduction state of the LED module according to a working signal;

[0050] The LED module is used to switch the working state according to the control signal in different conduction states;

[0051] The plug-in module includes a first plug-in module and a second plug-in module, and is used to connect external devices or control signals.

[0052] Wherein, the control module includes a first control chip U1, which has first to fourteenth pins and is connected to the input module and the output module;

[0053] The voltage stabilizing module includes a second control chip U2, which has first to third pins;

[0054] The LED module includes a fifth light emitting diode LED5 to a twentieth light emitting diode LED20 and a third control chip U3, wherein the third control chip U3 includes first to fourteenth pins;

[0055] The first row of plug-in modules includes first to twenty-sixth plug-in sockets, and the second row of plug-in modules includes first to fifth plug-in sockets.

[0056] Furthermore, if Figure 2 and Figure 5 As shown, the input module includes a low beam signal input circuit, a daytime running light signal input circuit, a position light signal input circuit and a high beam signal input circuit, wherein:

[0057] The low beam signal input circuit includes a first diode D1, the cathode of the first diode D1 is simultaneously connected to the first and second jacks of the first plug-in module and the anode of the fourth voltage regulator diode Z4, the cathode of the fourth voltage regulator diode Z4 is grounded, and the anode of the first diode D1 is connected to the seventh resistor R7; the other end of the seventh resistor R7 is simultaneously connected to the eighth resistor R8, the fourth capacitor C4 and the second pin of the first control chip U1, and the other ends of the eighth resistor R8 and the fourth capacitor C4 are grounded;

[0058] The daytime running light signal input circuit includes a fourth diode D4, the cathode of the fourth diode D4 is simultaneously connected to the anode of the fifth voltage stabilizing diode Z5 and the eighteenth socket of the first power strip module, and the anode is connected to one end of the first resistor R1; the other end of the first resistor R1 is simultaneously connected to the second resistor R2, the first capacitor C1 and the third pin of the first control chip U1, and the other ends of the second resistor R2 and the first capacitor C1 are grounded;

[0059] The position light signal input circuit includes a third diode D3, the cathode of the third diode D3 is connected to the seventh pin of the first power strip module, and the anode is connected to the third resistor R3; the other end of the third resistor R3 is simultaneously connected to the fourth resistor R4, the second capacitor C2 and the fifth pin of the first control chip U1;

[0060] The high beam signal input circuit includes a second diode D2, the cathode of the second diode D2 is simultaneously connected to the fourth and fifth jacks of the first plug-in module and the anode of the sixth voltage-stabilizing diode Z6, the cathode of the sixth voltage-stabilizing diode Z6 is grounded, and the anode of the second diode D2 is connected to the fifth resistor R5; the other end of the fifth resistor R5 is simultaneously connected to the sixth resistor R6, the third capacitor C3 and the sixth pin of the first control chip U1, and the other end of the sixth resistor R6 and the third capacitor C3 are connected.

[0061] Through the various signal input circuits of the input module, different lighting demand signals, such as low beam demand signal, daytime running light demand signal, position light demand signal or high beam demand signal, can be input into the control module from different pins through the module, and the control module processes them uniformly and converts the demand signals into different working signals for transmission to the output module, thereby avoiding the disadvantage that traditional vehicle lighting control requires different control chips to process different demand signals, enhancing the integration of the circuit, making the circuit more concise and reducing the wiring distance.

[0062] Furthermore, if Figure 4 As shown, in the LED module:

[0063] The fifth to seventh light emitting diodes are connected in series to form a first series light emitting diode group, the eighth to tenth light emitting diodes are connected in series to form a second series light emitting diode group, the eleventh to thirteenth light emitting diode groups are connected in series to form a third series light emitting diode group, the fourteenth to sixteenth light emitting diodes are connected in series to form a fourth series light emitting diode group, and the seventeenth to twentieth light emitting diodes are connected in series in sequence to form a fifth series light emitting diode group;

[0064] The first to fourth series light-emitting diode groups are connected in parallel to form a sixth parallel light-emitting diode group, the anode end of the sixth parallel light-emitting diode group is connected to the thirteenth pin of the third control chip U3, and the cathode of the sixth parallel light-emitting diode group is connected to the anode of the fifth series light-emitting diode group; the cathode of the fifth series light-emitting diode group is simultaneously connected to the eighteenth capacitor C18 to the twenty-first capacitor C21, the other ends of the eighteenth to the twenty-first capacitors are simultaneously connected in parallel to the tenth resistor R10 and the fourteenth pin of the third control chip U3, and the other end of the tenth resistor R10 is connected to the twelfth pin of the third control chip U3;

[0065] The first pin of the third control chip U3 is connected to ground through the fifteenth capacitor C15 and the twenty-eighth resistor R28 in sequence; the second pin is connected to the fourteenth resistor R14 and the fifteenth resistor R15 at the same time, the other end of the fifteenth resistor R15 is grounded, and the other end of the fourteenth resistor R14 is connected to the cathode of the fifth series light-emitting diode group; the third pin is connected to the sixteenth capacitor C16 and the eighth pin of the third control chip U3 at the same time; the fourth pin is grounded through the eleventh resistor R11; the fifth pin is grounded; the sixth pin is connected to the fortieth capacitor C40 and the thirty-fifth resistor R35 at the same time, and the other ends of the fortieth capacitor C40 and the thirty-fifth resistor R35 are grounded;

[0066] The seventh pin of the third control chip U3 is simultaneously connected to the thirty-second capacitor C32, the forty-fifth capacitor C45, the forty-sixth capacitor C46, ​​the tenth resistor R10 and the second inductor L2, the other ends of the thirty-second capacitor C32, the forty-fifth capacitor C45 and the forty-sixth capacitor C46 are grounded, the other end of the tenth resistor R10 is connected to the twelfth pin of the third control chip U3, and the other end of the second inductor L2 is connected to the cathode of the tenth diode D2; the anode of the tenth diode D2 is simultaneously connected to the forty-fourth capacitor C44 and the cathode of the fifth series light-emitting diode group, and the other end of the forty-fourth capacitor C44 is grounded;

[0067] The eighth pin of the third control chip U3 is grounded through the seventeenth capacitor C17; the ninth pin is connected to the gate of the sixth field effect transistor Q6 through the twelfth resistor R12, the source of the sixth field effect transistor Q6 is grounded through the thirteenth resistor R13, and the drain is simultaneously connected to the cathode of the tenth diode D10 and the fortieth resistor R40, and the other end of the fortieth resistor R40 is grounded through the fortieth capacitor C40; the tenth pin is grounded; the eleventh pin is grounded through the thirteenth resistor R13; the thirteenth pin is connected to the fourteenth pin through the ninth resistor R9.

[0068] Another example Figure 2 As shown, the output module includes the first photoelectric MOS tube to the fifth photoelectric MOS tube, each including the first to the fourth pins, wherein:

[0069] The first pins of the first photo MOS tube Q1, the second photo MOS tube Q2 and the third photo MOS tube Q3 are connected to the tenth pin of the first control chip U1 through the forty-third resistor R43, the thirty-sixth resistor R36 and the thirty-third resistor R33 respectively; the first pin of the fourth photo MOS tube Q4 is connected to the ninth pin of the first control chip U1 through the thirty-second resistor R32, and the first pin of the fifth photo MOS tube Q5 is connected to the eighth pin of the first control chip U1 through the thirty-first resistor R31; the second pins of the first to fifth photo MOS tubes are all grounded;

[0070] The third pin of the third photoelectric MOS tube is connected to the anode of the sixth parallel light emitting diode group, and the fourth pin is connected to the anode of the sixth parallel light emitting diode group;

[0071] The third pin is connected to the cathode of the eighteenth light emitting diode LED18, and the fourth pin is connected to the anode of the fifth series light emitting diode group; the third pin of the fifth photoelectric MOS tube is connected to the anode of the nineteenth light emitting diode LED19, and the fourth pin is connected to the cathode of the fifth series light emitting diode group;

[0072] The third pin of the third photo MOS tube is also connected to the cathode of the ninth polarized capacitor C9 and the third pins of the first and second photo MOS tubes, and the anode of the ninth polarized capacitor C9 is connected to the fourth pins of the first to third photo MOS tubes.

[0073] The output module adjusts the duty cycle of each photoelectric MOS tube in the module according to the different working signals (i.e., different voltages) output by each pin of the control module, thereby switching whether the photoelectric MOS tube is turned on or off. When the system is just powered on, the first control chip U1 defaults to all working signal outputs as high level, at which time the photoelectric MOS tube bypasses all light-emitting diodes LED. When the photoelectric MOS tube is turned off, the light-emitting diode LED of the lamp path corresponding to the photoelectric MOS tube is released from the bypass state and enters the working state.

[0074] At the same time, in the LED module, the third control chip U3 outputs different voltages to each series-parallel light-emitting diode group in the LED module according to the control signal, so that the light-emitting diode LED can adjust the light brightness according to demand to meet the use requirements of different lighting circuits.

[0075] Furthermore, although the system of the present invention integrates light-emitting diodes (LEDs) with different functions into the same LED module, when a light-emitting diode (LED) with one function fails, it will not affect the use of light-emitting diodes (LEDs) with other functions, thereby improving the stability of the circuit. When a failure occurs, it is easier to find the location of the failure, facilitating subsequent maintenance.

[0076] Furthermore, if Figure 3 As shown, the present invention also includes a voltage stabilizing module for providing chip voltage to the control module and the LED module, wherein:

[0077] The first pin of the second control chip U2 is also the anode of the fifth capacitor C5 to the seventh capacitor C7, and the fifth diode D5 to the eighth diode D8, the other ends of the fifth to seventh capacitors are grounded respectively, the cathode of the fifth diode D5 is connected to the first and second sockets of the first row of plug-in modules, the cathode of the sixth diode D6 is connected to the fourth and fifth sockets of the first row of plug-in modules, the cathode of the seventh diode D7 is connected to the seventh socket of the first row of plug-in modules, and the cathode of the eighth diode D8 is connected to the eighteenth socket of the first row of plug-in modules;

[0078] The first pin of the second control chip U2 is also connected to the anode of the third voltage zener diode Z3, the forty-seventh capacitor C47 and the forty-second resistor R42, and the other ends of the third voltage zener diode Z3 and the forty-seventh capacitor C47 are grounded; the other end of the forty-second resistor R42 is connected to the forty-eighth capacitor C48 and the cathode of the ninth diode D9, and the other end of the forty-eighth capacitor C48 is grounded; the anode of the ninth diode D9 is connected to the eleventh capacitor C11, the twelfth capacitor C12 and the first inductor L1, and the other ends of the eleventh and twelfth capacitors are grounded; the other end of the first inductor L1 is connected to the thirteenth capacitor C13, the fourteenth capacitor C14, the tenth resistor R10 and the fourteenth pin of the third control chip U3, the other ends of the thirteenth and fourteenth capacitors are grounded, and the other end of the tenth resistor R10 is connected to the twelfth pin of the third control chip U3;

[0079] The second pin of the second control chip U2 is grounded; the third pin is connected to the eighth capacitor C8, the ninth capacitor C9 and the first pin of the first control chip U1 at the same time.

[0080] The second control chip U2 in the voltage stabilizing module can convert the input AC voltage into the chip operating voltage required by each chip, so that each chip can operate normally.

[0081] Furthermore, if Figure 6 As shown, the first jack of the second row plug-in module is connected to the fourth pin of the first control chip U1; the second jack is connected to the first pin of the first control chip U1; the third jack is grounded; the fourth jack is connected to the thirteenth pin of the first control chip U1; and the fifth jack is connected to the fourteenth pin of the first control chip U1.

[0082] Furthermore, the chip model of the first control chip U1 is PIC16F1503, and the chip model of the third control chip U3 is TLD5097.

[0083] Through the second plug-in module, the user can connect an external device such as a computer to debug the first control chip U1, so that the chip can better meet the use requirements, and can also correct the chip when deviation occurs.

[0084] In summary, the present invention changes the conduction state of each photoelectric MOS tube by adjusting the duty cycle thereof, thereby switching the working state (bypass or conduction) of the LED, so that the present invention can realize the switching of different lamp circuit functions in the same LED module, without having to realize different lamp circuit functions by setting multiple control chips and LED modules, thereby reducing system wiring; and the system, although the multiple LED lamp circuits are integrated into the same LED module, even if a light emitting diode LED fails, it will not affect the operation of other LED lamp circuits;

[0085] At the same time, the present invention reduces the number of wiring harnesses of the vehicle lighting system, so that when a circuit failure occurs, maintenance personnel can more easily check the location of the fault, and the fewer wiring harnesses also reduce the overall burden on the vehicle battery, which is beneficial to the maintenance of the vehicle battery.

[0086] Embodiment 2

[0087] In order to better illustrate the integrated control system of the automobile combination headlights described in the present invention, this embodiment provides a preferred system operation case to further elaborate on the present invention.

[0088] like Figures 1 to 6 As shown, when the system is just powered on, the first control chip U1 defaults the output of all pins to a high level. At this time, the first to fifth photo MOS tubes are all in the on state, all LEDs are bypassed, and all LEDs do not emit light.

[0089] When the daytime running lights are needed, the external daytime running lights control signal is introduced into the daytime running lights signal input circuit and the LED module through the eighteenth jack of the first plug-in module. The daytime running lights signal input circuit transmits the control signal to the first control chip U1. The first control chip U1 outputs a low level according to the daytime running lights control signal, so that the first to third photo MOS tubes are turned off, the sixth parallel light emitting diode group (daytime running lights) is turned on, and the sixth parallel light emitting diode group starts to operate; at the same time, the third control chip U3 outputs a high voltage to the sixth parallel light emitting diode group according to the daytime running lights control signal, so that it meets the brightness requirements of the daytime running lights.

[0090] When the position light is needed, the external position light control signal is introduced into the position light signal input circuit and LED module through the seventh jack of the first plug-in module. The position light signal input circuit transmits the control signal to the first control chip U1. The first control chip U1 outputs a PWM signal according to the position light control signal to adjust the duty cycle of the first to third photo MOS tubes. At the same time, the third control chip U3 reduces the output voltage according to the position light control signal, so that the sixth parallel light emitting diode group (the position light at this time) reduces the brightness to meet the brightness requirements of the position light.

[0091] When the low beam is needed, the external low beam control signal is introduced into the low beam signal input circuit and the LED module through the first and second jacks of the first plug module. The low beam signal input circuit transmits the control signal to the first control chip U1. The first control chip U1 outputs a low level according to the low beam control signal, turns off the fourth photo MOS tube, and turns on the seventeenth and eighteenth light emitting diodes (low beam). At the same time, the third control chip U3 outputs a preset voltage according to the low beam control signal, so that the seventeenth and eighteenth light emitting diodes meet the brightness requirements of the low beam.

[0092] When the high beam is needed, the external low beam control signal is introduced into the high beam signal input circuit and the LED module through the fourth and fifth jacks of the first socket module. The high beam signal input circuit transmits the control signal to the first control chip U1. The first control chip U1 outputs a low level according to the high beam control signal, turns off the fifth photo MOS tube, and turns on the nineteenth and twentieth light emitting diodes (high beam). At the same time, the third control chip U3 outputs a preset voltage according to the high beam control signal, so that the nineteenth and twentieth light emitting diodes meet the brightness requirements of the high beam.

[0093] The first control chip U1 switches the conduction state of each automobile light circuit by controlling the conduction state of the first to fifth photo MOS tubes, so that it is possible to switch the functions of different light circuits in the same LED module without setting up multiple control chips and LED modules to realize different light circuit functions, thereby reducing system wiring; and although the system combines multiple LED light circuits in the same LED module, even if a light emitting diode LED fails, it will not affect the operation of other LED light circuits.

[0094] At the same time, the present invention reduces the number of wiring harnesses of the vehicle lighting system, so that when a circuit fails, maintenance personnel can more easily check the location of the fault. The fewer wiring harnesses reduce the overall burden on the vehicle battery and are also beneficial to the maintenance of the vehicle battery.

[0095] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An integrated control system for automobile combination headlights, characterized in that: It includes an input module, a control module, an output module, an LED module, a plug-in module and a voltage stabilizing module, wherein: An input module, used for transmitting control signals to the control module and the LED module; A control module, used for outputting a corresponding working signal according to a control signal; An output module, used for switching the conduction state of the LED module according to a working signal; The LED module is used to switch the working state according to the control signal in different conduction states; The plug-in module comprises a first plug-in module and a second plug-in module, wherein the first plug-in module is used to receive a control signal, and the second plug-in module is used to connect an external device to debug the control module; A voltage stabilizing module is used to provide chip voltage to the control module and the LED module; The control module includes a first control chip U1, which has a first pin to a fourteenth pin and is connected to the input module and the output module; The voltage stabilizing module includes a second control chip U2, including a first pin to a third pin; The LED module includes a fifth light emitting diode LED5 to a twentieth light emitting diode LED20 and a third control chip U3, and the third control chip U3 includes a first pin to a fourteenth pin; The first plug-in module includes the first to the twenty-sixth jacks, and the second plug-in module includes the first to the fifth jacks; The input module includes a low beam signal input circuit, a daytime running light signal input circuit, a position light signal input circuit and a high beam signal input circuit, wherein: The low beam signal input circuit includes a first diode D1, a cathode of the first diode D1 is simultaneously connected to the first jack, the second jack and the anode of the fourth voltage regulator diode Z4 of the first plug-in module, the cathode of the fourth voltage regulator diode Z4 is grounded, and the anode of the first diode D1 is connected to the seventh resistor R7; the other end of the seventh resistor R7 is simultaneously connected to the eighth resistor R8, the fourth capacitor C4 and the second pin of the first control chip U1, and the other ends of the eighth resistor R8 and the fourth capacitor C4 are grounded; The daytime running light signal input circuit includes a fourth diode D4, the cathode of the fourth diode D4 is simultaneously connected to the anode of the fifth voltage stabilizing diode Z5 and the eighteenth socket of the first plug-in module, and the anode is connected to one end of the first resistor R1; the other end of the first resistor R1 is simultaneously connected to the second resistor R2, the first capacitor C1 and the third pin of the first control chip U1, and the other ends of the second resistor R2 and the first capacitor C1 are grounded; The position light signal input circuit includes a third diode D3, the cathode of the third diode D3 is connected to the seventh pin of the first plug-in module, and the anode is connected to the third resistor R3; the other end of the third resistor R3 is simultaneously connected to the fourth resistor R4, the second capacitor C2 and the fifth pin of the first control chip U1; The high beam signal input circuit includes a second diode D2, the cathode of the second diode D2 is simultaneously connected to the fourth jack, the fifth jack and the anode of the sixth voltage stabilizing diode Z6 of the first plug-in module, the cathode of the sixth voltage stabilizing diode Z6 is grounded, and the anode of the second diode D2 is connected to the fifth resistor R5; the other end of the fifth resistor R5 is simultaneously connected to the sixth resistor R6, the third capacitor C3 and the sixth pin of the first control chip U1, and the other ends of the sixth resistor R6 and the third capacitor C3 are grounded; In the LED module: The fifth to seventh light emitting diodes are connected in series to form a first series light emitting diode group, the eighth to tenth light emitting diodes are connected in series to form a second series light emitting diode group, the eleventh to thirteenth light emitting diode groups are connected in series to form a third series light emitting diode group, the fourteenth to sixteenth light emitting diodes are connected in series to form a fourth series light emitting diode group, and the seventeenth to twentieth light emitting diodes are connected in series in sequence to form a fifth series light emitting diode group; The first series light-emitting diode group to the fourth series light-emitting diode group are connected in parallel to form a sixth parallel light-emitting diode group, the anode end of the sixth parallel light-emitting diode group is connected to the thirteenth pin of the third control chip U3, and the cathode of the sixth parallel light-emitting diode group is connected to the anode of the fifth series light-emitting diode group; the cathode of the fifth series light-emitting diode group is simultaneously connected to the eighteenth capacitor C18 to the twenty-first capacitor C21, the other ends of the eighteenth capacitor to the twenty-first capacitor are simultaneously connected in parallel to the tenth resistor R10 and the fourteenth pin of the third control chip U3, and the other end of the tenth resistor R10 is connected to the twelfth pin of the third control chip U3; The first pin of the third control chip U3 is connected to ground through the fifteenth capacitor C15 and the twenty-eighth resistor R28 in sequence; the second pin is connected to the fourteenth resistor R14 and the fifteenth resistor R15 at the same time, the other end of the fifteenth resistor R15 is grounded, and the other end of the fourteenth resistor R14 is connected to the cathode of the fifth series light-emitting diode group; the third pin is connected to the sixteenth capacitor C16 and the eighth pin of the third control chip U3 at the same time; the fourth pin is grounded through the eleventh resistor R11; the fifth pin is grounded; the sixth pin is connected to the fortieth capacitor C40 and the thirty-fifth resistor R35 at the same time, and the other ends of the fortieth capacitor C40 and the thirty-fifth resistor R35 are grounded; The seventh pin of the third control chip U3 is simultaneously connected to the thirty-second capacitor C32, the forty-fifth capacitor C45, the forty-sixth capacitor C46, ​​the tenth resistor R10 and the second inductor L2; the other ends of the thirty-second capacitor C32, the forty-fifth capacitor C45 and the forty-sixth capacitor C46 are grounded; the other end of the tenth resistor R10 is connected to the twelfth pin of the third control chip U3; the other end of the second inductor L2 is connected to the cathode of the tenth diode D2; the anode of the tenth diode D2 is simultaneously connected to the forty-fourth capacitor C44 and the cathode of the fifth series light-emitting diode group; the other end of the forty-fourth capacitor C44 is grounded; The eighth pin of the third control chip U3 is grounded through the seventeenth capacitor C17; the ninth pin is connected to the gate of the sixth field effect transistor Q6 through the twelfth resistor R12, the source of the sixth field effect transistor Q6 is grounded through the thirteenth resistor R13, and the drain is simultaneously connected to the cathode of the tenth diode D10 and the fortieth resistor R40, and the other end of the fortieth resistor R40 is grounded through the fortieth capacitor C40; the tenth pin is grounded; the eleventh pin is grounded through the thirteenth resistor R13; the thirteenth pin is connected to the fourteenth pin through the ninth resistor R9; The output module includes a first photoelectric MOS tube to a fifth photoelectric MOS tube, each including a first pin to a fourth pin, wherein: The first pins of the first photo MOS tube Q1, the second photo MOS tube Q2 and the third photo MOS tube Q3 are connected to the tenth pin of the first control chip U1 through the forty-third resistor R43, the thirty-sixth resistor R36 and the thirty-third resistor R33 respectively; the first pin of the fourth photo MOS tube Q4 is connected to the ninth pin of the first control chip U1 through the thirty-second resistor R32, and the first pin of the fifth photo MOS tube Q5 is connected to the eighth pin of the first control chip U1 through the thirty-first resistor R31; the second pins of the first to fifth photo MOS tubes are all grounded; The third pin of the third photo MOS tube is connected to the anode of the sixth parallel light emitting diode group, and the fourth pin is connected to the anode of the sixth parallel light emitting diode group; the third pin of the fourth photo MOS tube is connected to the cathode of the eighteenth light emitting diode LED18, and the fourth pin is connected to the anode of the fifth series light emitting diode group; the third pin of the fifth photo MOS tube is connected to the anode of the nineteenth light emitting diode LED19, and the fourth pin is connected to the cathode of the fifth series light emitting diode group; The third pin of the third photo MOS tube is also connected to the cathode of the ninth polarized capacitor C9, the third pins of the first photo MOS tube and the second photo MOS tube, and the anode of the ninth polarized capacitor C9 is connected to the fourth pins of the first photo MOS tube to the third photo MOS tube.

2. The integrated control system for automobile combination headlights according to claim 1, characterized in that: In the voltage stabilizing module: The first pin of the second control chip U2 is simultaneously the anode of the fifth capacitor C5 to the seventh capacitor C7, and the anode of the fifth diode D5 to the eighth diode D8, the other ends of the fifth capacitor to the seventh capacitor are grounded respectively, the cathode of the fifth diode D5 is connected to the first jack and the second jack of the first plug-in module, the cathode of the sixth diode D6 is connected to the fourth jack and the fifth jack of the first plug-in module, the cathode of the seventh diode D7 is connected to the seventh jack of the first plug-in module, and the cathode of the eighth diode D8 is connected to the eighteenth jack of the first plug-in module; The first pin of the second control chip U2 is also connected to the anode of the third voltage zener diode Z3, the forty-seventh capacitor C47 and the forty-second resistor R42, and the other ends of the third voltage zener diode Z3 and the forty-seventh capacitor C47 are grounded; the other end of the forty-second resistor R42 is connected to the forty-eighth capacitor C48 and the cathode of the ninth diode D9, and the other end of the forty-eighth capacitor C48 is grounded; the anode of the ninth diode D9 is connected to the eleventh capacitor C11, the twelfth capacitor C12 and the first inductor L1, and the other ends of the eleventh capacitor and the twelfth capacitor are grounded; the other end of the first inductor L1 is connected to the thirteenth capacitor C13, the fourteenth capacitor C14, the tenth resistor R10 and the fourteenth pin of the third control chip U3, the other ends of the thirteenth capacitor and the fourteenth capacitor are grounded, and the other end of the tenth resistor R10 is connected to the twelfth pin of the third control chip U3; The second pin of the second control chip U2 is grounded; the third pin is connected to the eighth capacitor C8, the ninth capacitor C9 and the first pin of the first control chip U1 at the same time.

3. The integrated control system for automobile combination headlights according to claim 1, characterized in that: The first jack of the second plug-in module is connected to the fourth pin of the first control chip U1; the second jack is connected to the first pin of the first control chip U1; the third jack is grounded; the fourth jack is connected to the thirteenth pin of the first control chip U1; and the fifth jack is connected to the fourteenth pin of the first control chip U1.

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