Running water steering lamp control system and vehicle

Abstract

The invention relates to the field of vehicle lighting, and discloses a running water steering lamp control system and a vehicle, and the running water steering lamp control system comprises a power supply circuit comprising a DC-DC conversion unit, a first turn-on control unit, a plurality of second turn-on control units and a control unit. Wherein the power supply circuits are suitable for connecting input power sources, and the input power sources are converted and output through the DC-DC conversion units so as to be provided for different lamp bead modules; the first opening control unit is suitable for controlling the first LED lamp bead module to work; the plurality of second turn-on control units are suitable for controlling the plurality of LED units in the second LED lamp bead module to work in sequence; and the control unit is suitable for controlling the first LED lamp bead module to work according to the daytime running lamp or position lamp input signal, and controlling the plurality of second turn-on control units according to the running water steering lamp input signal, so that the plurality of LED units work in sequence. The effect of lightening three different lighting functions through a single control unit is achieved, and the flexibility and applicability of the running water steering lamp control system are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle lighting, and in particular to a flow turn signal control system and a vehicle. Background Art

[0002] In modern automobile technology, in addition to high and low beam lights, the vehicle's lighting system also includes three lighting systems: daytime running lights, position lights, and turn signals, which are used to improve the lighting efficiency of the road and assist the driver in improving the driving experience. However, the control systems and control methods of the three lighting systems of vehicle daytime running lights, position lights, and turn signals in the related art still have limitations, and the performance of the flow turn signal control system needs to be further improved. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present application proposes a water flow turn signal control system and a vehicle. The main technical solutions adopted by the present application include:

[0004] In a first aspect, an embodiment of the present application provides a flow turn signal control system, integrating at least one of a daytime running light and a position light, wherein a first LED lamp bead module is correspondingly provided for the daytime running light or the position light, and a second LED lamp bead module is correspondingly provided for the flow turn signal. The flow turn signal control system comprises: a power supply circuit, wherein the power supply circuit comprises a DC-DC conversion unit, and the power supply circuit is suitable for respectively connecting the input power of the daytime running light, the input power of the position light and the input power of the turn signal, and converting and outputting them through the DC-DC conversion unit to respectively provide them to the first LED lamp bead module and the second LED lamp bead module; a first start control unit, wherein the first start control unit is suitable for controlling the first LED lamp bead module to work; a plurality of second start control units, wherein the plurality of second start control units are suitable for controlling a plurality of LED units in the second LED lamp bead module to work in sequence; a control unit, wherein the control unit is suitable for controlling the DC-DC conversion unit and the first start control unit according to the daytime running light input signal or the position light input signal, so that the first LED lamp bead module works, and adjusting the output of the DC-DC conversion unit and controlling the plurality of second start control units according to the flow turn signal input signal, so that the plurality of LED units work in sequence.

[0005] In one embodiment, the first LED lamp bead module includes N×M first LED lamp beads arranged in an array, wherein each row of first LED lamp beads are connected in series, and each column of first LED lamp beads are connected in parallel, and when the first start control unit is turned on, all N×M first LED lamp beads are lit.

[0006] In one embodiment, the control unit is further configured to control the output of the DC-DC conversion unit according to the daytime running light input signal to be different from the output of the DC-DC conversion unit according to the position light input signal.

[0007] In one embodiment, the second LED lamp bead module includes N×M second LED lamp beads arranged in an array, each row of second LED lamp beads are connected in series, and each column of second LED lamp beads are connected in parallel, wherein when the second start-up control unit corresponding to the second LED lamp beads in the first column is turned on, the second LED lamp beads in the first column are lit; when the second start-up control unit corresponding to the second LED lamp beads in the second column is turned on, the second LED lamp beads in the first column and the second LED lamp beads in the second column are lit at the same time; when the second start-up control unit corresponding to the second LED lamp beads in the Mth column is turned on, the second LED lamp beads in the first column to the second LED lamp beads in the Mth column are lit at the same time.

[0008] In one of the embodiments, the control unit is further used to control multiple second opening control units to be opened in sequence according to the running turn signal input signal, and only one second opening control unit is opened at the same time.

[0009] In one of the embodiments, the control unit is also used to output an enable signal to the DC-DC conversion unit according to any one of the daytime running light input signal, the position light input signal and the running turn signal input signal to enable the DC-DC conversion unit to work, and to control the DC-DC conversion unit to perform corresponding outputs according to the daytime running light input signal and the position light input signal, and to control the DC-DC conversion unit to perform different outputs according to the running turn signal input signal and the opening status of multiple second opening control units.

[0010] In one embodiment, the flow turn signal control system also includes a fault feedback detection unit and a fault backup light unit, wherein the fault feedback detection unit is suitable for performing fault diagnosis on the second LED lamp bead module and, when a fault occurs in the second LED lamp bead module, feeding back a turn signal fault signal to the control unit so that the control unit controls the second LED lamp bead module to stop working; the fault backup light unit is suitable for lighting the backup light to provide a turn prompt when a fault occurs in the second LED lamp bead module.

[0011] In a second aspect, an embodiment of the present application provides a vehicle, and the vehicle control method implements the content of any of the above-mentioned flowing turn signal control systems.

[0012] In the above embodiment, since at least one of the daytime running lights and the position lights is integrated, and the daytime running lights or the position lights are provided with a first LED lamp bead module correspondingly, and the running turn lights are provided with a second LED lamp bead module correspondingly. The running turn light control system includes: a power supply circuit that receives the input power of the daytime running lights, the position lights and the turn lights and uses a DC-DC conversion unit to convert and output the power to the first LED lamp bead module and the second LED lamp bead module; a first start control unit that controls the first LED lamp bead module to work; multiple second start control units that control multiple LED units in the second LED lamp bead module to work in sequence; and a control unit that is suitable for controlling the DC-DC conversion unit and the first start control unit according to the daytime running light input signal or the position light input signal to make the first LED lamp bead module work, and adjusting the output of the DC-DC conversion unit and controlling the multiple second start control units according to the running turn light input signal to make the multiple LED units work in sequence. Based on the flowing turn signal control system, the power supply and control of the daytime running lights, position lights and flowing turn signals are integrated in the same control system, so that the effect of lighting up three different lighting functions can be achieved through a single control unit, thereby improving the flexibility and applicability of the flowing turn signal control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1a It is a structural block diagram of a position light and daytime running light control device provided in the related art;

[0015] Figure 1b A structural block diagram of a turn signal control device provided in the related art;

[0016] Figure 1c is a structural block diagram of another turn signal control device provided in the related art;

[0017] Figure 1d This is a structural block diagram of a water turn signal control system provided according to an embodiment of the present application;

[0018] Figure 1e A schematic diagram of a PWM dimming waveform provided according to an embodiment of the present application;

[0019] Figure 2aA circuit schematic diagram of a first LED lamp bead module provided according to an embodiment of the present application;

[0020] Figure 2b A circuit schematic diagram of a first start control unit provided according to an embodiment of the present application;

[0021] Figure 2c A schematic diagram of a PWM dimming waveform provided according to another embodiment of the present application;

[0022] Figure 3a A circuit schematic diagram of a second LED lamp bead module provided according to an embodiment of the present application;

[0023] Figure 3b A circuit schematic diagram of a second start control unit provided according to an embodiment of the present application;

[0024] Figure 3c A schematic diagram of a PWM dimming waveform provided according to another embodiment of the present application;

[0025] Figure 4a A circuit schematic diagram of an opening control unit provided according to an embodiment of the present application;

[0026] Figure 4b A circuit schematic diagram of a DC-DC conversion unit provided according to an embodiment of the present application;

[0027] Figure 5a A circuit schematic diagram of an input protection unit provided according to an embodiment of the present application;

[0028] Figure 5b A circuit schematic diagram of an input filter unit provided according to an embodiment of the present application;

[0029] Figure 6 A structural block diagram of a water turn signal control system provided according to another embodiment of the present application;

[0030] Figure 7 The schematic diagram of a circuit of a fault unit provided according to an embodiment of the present application is shown in FIG. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0032] In modern automobile technology, in addition to high and low beam lights, the vehicle's lighting system also includes three lighting systems: daytime running lights, position lights, and turn signals, which are used to improve the efficiency of road lighting while driving on the road and assist the driver in improving the driving experience. However, in the related technology, the control and mutual switching of the front combination lights or headlights that integrate the three functions of daytime running lights (abbreviated as daytime running lights), front position lights, and flowing front turn signals are mainly the following schemes: the daytime running lights and position lights are controlled and lit by a control circuit composed of a chip and chip peripheral circuits (MOS, transistors, inductors, resistors, capacitors, diodes, etc.), while the flowing turn signals are controlled and lit by a control circuit composed of a single-chip microcomputer + multiple multi-channel linear buck chips and chip peripheral circuits. The control circuit is costly and requires a large volume and space. The control principle block diagram is shown below. Figure 1a , Figure 1b and Figure 1c As shown in the figure, the power supply, control and switching are all completed by two sets of control circuits, so the following problems will arise:

[0033] 1. Two sets of DC-DC step-down drive circuits are used to provide power supply, resulting in high electromagnetic radiation and noise. In addition, the circuit has weak anti-interference ability and is prone to electromagnetic radiation, which can cause interference and lead to circuit failure;

[0034] 2. Two sets of control circuits and multi-channel linear chips are needed to realize the power and application of the three functions of daytime running lights, position lights, and running front turn lights. The circuit cost is high and is not conducive to production and manufacturing;

[0035] 3. Using two sets of control circuits requires multiple inductors and aluminum capacitors, which results in a large circuit board volume and design area, that is, a high application cost. In addition, the DC-DC buck drive circuit requires a complex peripheral circuit, and the size requirements of the circuit drive board are strict, with poor flexibility and applicability;

[0036] 4. Using two sets of control circuits requires not only multiple inductors and aluminum capacitors, but also multiple high-frequency switching MOS tubes, which causes the control system to generate high heat. This requires a complex heat dissipation design, resulting in high requirements for circuit board layout.

[0037] Based on this, according to an embodiment of the present application, a water flow turn signal control system embodiment is provided, such as Figure 1d As shown, at least one of the daytime running lights and position lights is integrated, the daytime running lights or the position lights are correspondingly provided with a first LED lamp bead module 150, and the flowing turn signal lights are correspondingly provided with a second LED lamp bead module 160, and the flowing turn signal lights control system 100 includes: a power supply circuit 110, a first start control unit 120, multiple second start control units 130 and a control unit 140.

[0038] Among them, at least one of the daytime running lights and the position lights is integrated, and the daytime running lights or the position lights are correspondingly provided with a first LED lamp bead module 150; and the running turn lights are correspondingly provided with a second LED lamp bead module 160. It should be understood that since the lighting effects of the daytime running lights and the position lights are generally achieved by white light LED lamp beads, and the lighting effect of the running turn lights is generally achieved by yellow light LED lamp beads, under the premise of ensuring the optimal optical performance, out of consideration of the lighting effects of the daytime running lights and the position lights, the same group of white light LED lamp bead modules can be used for the daytime running lights and the position lights, and another group of yellow light LED lamp bead modules can be used separately for the running turn lights.

[0039] The power supply circuit 110 may be a circuit unit loop including a power chip, which may be used to receive input signals from the vehicle body controller, and connect the input power of the daytime running lights, the input power of the position lights, and the input power of the turn signals, so as to provide the necessary power source for the water flow turn signal control system. Specifically, the power supply circuit includes a DC-DC conversion unit 111. The DC-DC conversion unit 111 may be a buck-boost topology structure that dynamically switches between boost and buck working modes based on the relationship between the input and output voltages, and may convert the DC voltage input by the vehicle body controller into a DC voltage suitable for system applications. Specifically, the DC-DC conversion unit 111 is a part of the power supply circuit 110, and may perform buck conversion based on the input power of the daytime running lights, the position lights, and the turn signals, and convert it into a DC power supply suitable for the operation of the respective LED lamp bead modules, and provide it to the first LED lamp bead module 150 and the second LED lamp bead module 160.

[0040] It should be understood that since the three lamp bead modules are all driven by the same DC-DC conversion unit 111, in order to adapt to the different LED lamp bead load quantities and load currents of the three functions of position lights, daytime running lights, and flowing turn signals, and to ensure that the lighting effects of the three lamp bead modules can be lit according to the preset design requirements, PWM dimming can be used for dimming settings. Exemplarily, the DC-DC conversion unit 111 can use a constant current buck-boost architecture to power the LED lamp bead loads in the lamp bead module and provide a constant current. If the rated current of the DC-DC conversion unit 111 is designed to be 2.5A, then the duty cycle based on the rated current design can be 90%, and the PWM waveform under the rated current can be referred to. Figure 1e , where T ON(额) Indicates the lighting time at rated power setting, T OFF(额)Indicates the time when it is not lit under the rated power setting. At the same time, in order to ensure the lighting effect of each function, the lighting cycle of the position light, the running light and the daytime running light can be designed to be 2.5us. Furthermore, since the DC-DC conversion unit 111 adopts a buck-boost constant current architecture, the power supply voltage required by different LED lamp bead modules can be adjusted according to the negative feedback of the current loop in the DC-DC conversion unit 111, and different output voltages are automatically adjusted according to different lighting effects. When the number and current of the LED lamp bead load increase, the duty cycle of the corresponding preset PWM signal will also increase. When the number and current of the LED lamp bead load decrease, the duty cycle of the corresponding preset PWM signal will also decrease.

[0041] The first start control unit 120 and the second start control unit 130 can both be circuit unit loops that control the corresponding LED lamp bead module to light up or perform other functions based on the control instructions input therein. Exemplarily, the first start control unit 120 and the second start control unit 130 can include switch elements such as MOS tubes or transistors. Based on the switch elements therein, the start control unit can connect or disconnect the circuit according to the high and low levels in different input signals to realize the operation of lighting up the daytime running lights, position lights and running lights.

[0042] It should be understood that, since the lighting effects of the daytime running lights, position lights and running turn lights are different, the lighting modes of the lamp bead modules corresponding to the opening control units are also different. Specifically, the first opening control unit 120 is suitable for controlling the first LED lamp bead module 150 to work, that is, the first opening control unit 120 can control the first LED lamp bead module 150 to be turned on and off at the same time according to the instructions of the control unit 140, so as to realize the function of lighting up or extinguishing the daytime running lights or position lights; and the plurality of second opening control units 130 are suitable for controlling the plurality of LED units in the second LED lamp bead module 160 to work in sequence, that is, the second opening control unit 130 can control a certain LED unit in the corresponding second LED lamp bead module to light up according to the instructions of the control unit 140. Similarly, the plurality of second opening control units 130 can control the plurality of LED units in the second LED lamp bead module 160 to work in sequence according to a predetermined order according to the instructions of the control unit 140, and finally realize the effect of the running turn lighting of the running turn lights.

[0043] The control unit 140 may be a circuit unit suitable for receiving various input signals and sending control instructions to the running light control system. Specifically, the control unit 140 may use the MCU control chip contained therein to control the DC-DC conversion unit 111 and the first opening control unit 120 according to the daytime running light input signal or the position light input signal, so that the first LED lamp bead module 150 works to realize the function of lighting up or extinguishing the daytime running light or the position light; further, the control unit 140 may also adjust the output of the DC-DC conversion unit and control multiple second opening control units according to the running light input signal, so that multiple LED units work in sequence to realize the running light lighting effect of the running light.

[0044] In the above embodiment, the power supply circuit is connected to the input power of the daytime running light, the position light and the turn signal light and converted and outputted by the DC-DC conversion unit to provide to the first LED lamp bead module and the second LED lamp bead module; the first start control unit controls the first LED lamp bead module to work; the multiple second start control units control the multiple LED units in the second LED lamp bead module to work in sequence; and the control unit is suitable for controlling the DC-DC conversion unit and the first start control unit according to the daytime running light input signal or the position light input signal so that the first LED lamp bead module works, and adjusting the output of the DC-DC conversion unit and controlling the multiple second start control units according to the running water turn signal input signal so that the multiple LED units work in sequence. Based on the running water turn signal control system, the power supply and control of the daytime running light, the position light and the running water turn signal are integrated in the same control system, so that the effect of lighting three different lighting functions can be achieved through a single control unit, thereby improving the flexibility and applicability of the running water turn signal control system.

[0045] In some embodiments, the first LED lamp bead module 150 includes N×M first LED lamp beads arranged in an array.

[0046] It is understandable that, in consideration of the lighting effect of the daytime running lights and position lights, the first LED lamp beads can be white light LED lamp beads. Specifically, the first LED lamp beads in each row are connected in series, and the first LED lamp beads in each column are connected in parallel. For example, take N as 3 and M as 8 as an example, please refer to Figure 2a , each row of white light LED lamp beads LW1 to LW8, LW9 to LW16 and LW17 to LW24 are connected in series in sequence, and each column of white light LED lamp beads are connected in parallel.

[0047] Further, when the first start control unit is turned on 120, all N×M first LED lamp beads are lit. Exemplarily, Figure 2bis a circuit diagram of the first opening control unit 120, please refer to Figure 2b and Figure 2a , the control unit 140 inputs a high-level signal DRL_PL_ON to the first opening control unit 120 based on the daytime running light input signal or the position light input signal. After being filtered by the filter capacitor CB7 and divided by the voltage-dividing resistors R16 and R50, this high-level signal will be input to the gate of the NMOS tube Q2, so that the NMOS tube Q2 is turned on and its source is grounded. At the same time, the port DRL_PL of the source of the NMOS tube Q2 is also connected to the negative poles of the N×M first LED lamp beads arranged in the array in the first LED lamp bead module 150, that is, when the NMOS tube Q2 is turned on, the negative poles of the first LED lamp beads are all grounded, and the current will first flow into the first LED lamp beads in the first row. It can be understood that since the first LED lamp beads in each row are designed in series, the current must pass through all the LED lamp beads in the row in sequence. Furthermore, since each column of the first LED lamp beads in the first LED lamp bead module 150 is connected in parallel, once a first LED lamp bead in any row is lit, all the first LED lamp beads in the column will also be lit accordingly, ultimately achieving the effect of lighting up all N×M first LED lamp beads.

[0048] Optionally, the PWM dimming method can be used to dim the first LED lamp bead module 150. It can be understood that the duty cycle calculation formula when the position lamp is lit can be D 位 =T ON(位) / (T ON(位) +T OFF(位) ), where D 位 Indicates the PWM duty cycle of the position light dimming, T ON(位) Indicates the time the position light is set to be on, T OFF(位) Indicates the time when the position lamp is not lit. Similarly, the duty cycle calculation formula when the daytime running lamp is lit can be D 日 =T ON(日) / (T ON(日) +T OFF(日) ). Among them, D 日 Indicates the PWM duty cycle of the position light dimming, T ON(日) Indicates the time the position light is set to be on, T OFF(日) Indicates the time that the position light setting is not illuminated.

[0049] Since both the position lamp and the daytime running lamp use the first LED lamp bead module 150 to realize the lighting function, taking the position lamp dimming as an example, when the position lamp lighting effect needs to be presented, the rated current flowing through each first LED lamp bead in the first LED lamp bead module 150 is set to 0.05A. In order to adapt to different numbers of LED lamp bead loads, the waveform of the position lamp PWM dimming under different numbers of LED lamp bead paths of the N×M array can be as follows: Figure 2c As shown, the number of LED lamp beads in series is represented by L, the number of LED lamp beads in parallel is represented by k, and m represents the 1st, 2nd, ... mth LED lamp beads. At this time, the DC-DC conversion unit 111 needs to provide an output voltage U = 3 × L, and an output current I = I 位 ×k.

[0050] Furthermore, when the number of first LED lamp beads K connected in parallel in the first LED lamp bead module 150 is 1, and the number of first LED lamp beads connected in series is 1, the number of LED lamp beads that need to be lit is 1, that is, the first LED lamp bead LW1 that needs to be lit is the first LED lamp bead, and the output voltage U provided by the DC-DC conversion unit 111 is U=3×L=3×1=3V, and the output current I=I 位 ×k=0.05×1=0.05A. The PWM dimming waveform of the position lamp required at this time is Figure 2c The PWM waveform when k=1 is shown in FIG. By analogy, the position light PWM dimming waveform when the number of first LED lamp beads k connected in parallel in the first LED lamp bead module 150 is 2, 3... to M can also be calculated by referring to the above calculation method. Furthermore, after the position light PWM dimming waveform is set accordingly, it can be input into the DC-DC conversion unit 111 to control the opening and closing of the first LED lamp bead according to the corresponding position light PWM dimming waveform.

[0051] In the above embodiment, through the series and parallel array settings, when the first LED lamp bead module is turned on, the current must pass through each LED lamp bead in the array in turn, so that the entire module can provide uniform and wide lighting coverage.

[0052] In some embodiments, the control unit 140 is further configured to control the output of the DC-DC conversion unit 111 to be different according to the daytime running light input signal and according to the position light input signal.

[0053] It should be understood that, for the sake of driving experience and lighting effects, although the same set of LED lamp bead modules are used for both the daytime running lights and the position lights, in actual applications, different voltages and currents are required to light up the first LED lamp bead module 150 to work, in order to distinguish the presentation effects of different lamp groups. Therefore, based on the different input signals identified, the control unit 140 will adjust the output parameters of the voltage and current of the DC-DC conversion unit 111 accordingly to match the requirements of the lighting system of the corresponding lamp group. For example, if the rated current of the DC-DC conversion unit 111 is 2.5 amperes, the current flowing through each first LED lamp bead in the first LED lamp bead module 150 can be set to 0.05 amperes when the position light lighting effect is required; and when the daytime running light lighting effect is required, the current flowing through each first LED lamp bead in the first LED lamp bead module 150 is 0.15 amperes.

[0054] In the above implementation, although the daytime running lights and position lights may use the same set of LED lamp bead modules, different voltages and currents are designed for them in actual applications. Furthermore, based on different input signals, the control unit will control the DC-DC conversion unit to output different parameters, and finally achieve the lighting effect required by each lamp group. Through this flexible control mechanism, the water turn signal control system can realize multiple lighting functions on the same set of hardware, and at the same time ensure that each function can operate in the most appropriate state, thereby improving the driving experience and safety.

[0055] In some embodiments, the second LED lamp bead module 160 includes N×M second LED lamp beads arranged in an array.

[0056] It is also understandable that, in consideration of the lighting effect of the water turn signal lamp, the second LED lamp bead can be a yellow LED lamp bead. Specifically, the second LED lamp beads in each row are connected in series, and the second LED lamp beads in each column are connected in parallel. For example, N is 3 and M is 8. Please refer to Figure 3a The second LED lamp bead module 160 is composed of N×M second LED lamp beads arranged in an array of N rows and M columns. The second LED lamp beads in each row are connected in series, the second LED lamp beads in each column are connected in parallel, and each column of the second LED lamp beads corresponds to a second start control unit 130.

[0057] Specifically, when the second start-up control unit 130 corresponding to the second LED lamp beads in the first column is turned on, the second LED lamp beads in the first column are lit; when the second start-up control unit 130 corresponding to the second LED lamp beads in the second column is turned on, the second LED lamp beads in the first column and the second LED lamp beads in the second column are lit at the same time; when the second start-up control unit 130 corresponding to the second LED lamp beads in the Mth column is turned on, the second LED lamp beads in the first column to the second LED lamp beads in the Mth column are lit at the same time.

[0058] Similarly, the control unit 140 inputs high-level signals to the multiple second start control units 130 in a certain order based on the input signal of the running turn signal. After the input signal enters the second start control unit 130, it is first filtered by the filter capacitor and divided by multiple voltage-dividing resistors, and then continues to be input to the gate of the NMOS tube contained in the corresponding start control unit and turns it on. After the NMOS tube is turned on, its source is grounded. Similarly, since the source of the NMOS tube is also connected to the cathode of a corresponding column of the second LED lamp beads in the second LED lamp bead module 160, that is, when the NMOS tube is turned on, the cathode of the corresponding column of the second LED lamp beads is grounded and thus lit.

[0059] For example, taking M as 8, Figure 3b is a circuit diagram of multiple second opening control units 130, please refer to Figure 3b and Figure 3aWhen the second start-up control unit 130 corresponding to the first column is turned on, the NMOS tube Q11 is turned on, and the voltage of the TL1 port is pulled down to the ground, so that the negative poles of the yellow LED lamp beads LY1, LY9 and LY17 are grounded and lit. It should be understood that since the yellow LED lamp beads LY1 and LY2 in the first row, the yellow LED lamp beads LY9 and LY10 in the second row, and the yellow LED lamp beads LY17 and LY18 in the third row are connected in series, and the yellow LED lamp beads LY1, LY9 and LY17 in the first column and the yellow LED lamp beads LY2, LY10 and LY18 in the second column are connected in parallel, when the second start-up control unit 130 corresponding to the second column is turned on and the NMOS tube Q15 is turned on, the voltage of the TL2 port will be pulled down to the ground, so that the negative poles of the yellow LED lamp beads LY1, LY9 and LY17 are grounded and lit. The current will also flow into the yellow LED lamp beads in the first column, so the second LED lamp beads in the first column and the second LED lamp beads in the second column will be lit at the same time. Furthermore, since all the second LED lamp beads in the second LED lamp bead module 160 are arranged in an array, based on their series and parallel characteristics, when the second start control unit 130 corresponding to the second LED lamp beads in the next column is turned on, the second LED lamp beads in this column and all the columns in front will be lit at the same time. Finally, when the second start control unit 130 corresponding to the second LED lamp beads in the Mth column is turned on, the second LED lamp beads in the first column to the second LED lamp beads in the Mth column will be lit at the same time.

[0060] Similarly, the PWM dimming method can be used to dim the second LED lamp bead module 160. Specifically, the duty cycle calculation formula when the water turn signal lamp is lit can be D 转 =T O N(转) / (T ON(转) +T OFF(转) ). Among them, D 转 Indicates the PWM duty cycle of the water turn signal dimming, T ON(转) Indicates the time when the water turn signal lamp is turned on, T OFF(转) Indicates the time that the running turn signal lamp is not illuminated.

[0061] For example, when the lighting effect of the running turn signal lamp is required, the rated current flowing through each second LED lamp bead in the second LED lamp bead module 160 is set to 0.1A. In order to adapt to different numbers of turn signal lamp LED lamp bead loads, the waveform of the running turn signal lamp PWM dimming under different numbers of LED paths in the N×M array can be as follows: Figure 3cAs shown, the number of LED lamp beads in series is represented by L, the number of LED lamp beads in parallel is represented by k, and m represents the 1st, 2nd, ... mth LED lamp beads. At this time, the DC-DC conversion unit 111 needs to provide an output voltage U = 3 × L, and an output current I = I 转 ×k. Further, when the number of parallel second LED lamp beads K in the second LED lamp bead module 160 is 1, and the number of series second LED lamp beads is 1, the number of LED lamp beads that need to be lit is 1, that is, the first LY1 of the second LED lamp bead that needs to be lit is LY1, and the corresponding output voltage U provided by the DC-DC conversion unit 111 is 3×L=3×1=3V, and the output current I=I 转 ×k=0.1×1=0.1A. The PWM dimming waveform of the running water turn signal lamp required at this time is Figure 3c The PWM waveform when k=1 is shown in . Similarly, the PWM dimming waveform of the running turn signal lamp when the number of second LED lamp beads k connected in parallel in the second LED lamp bead module 160 is 2, 3... to M can also be calculated by referring to the above calculation method. Further, after the corresponding PWM dimming waveform of the running turn signal lamp is set, it can be input into the DC-DC conversion unit 111 to control the opening and closing of the second LED lamp bead according to the corresponding PWM dimming waveform of the running turn signal lamp.

[0062] In the above embodiment, based on the special array LED lamp bead setting method in the second LED lamp bead module, the circuit design of the second opening control unit is simplified. At the same time, each column of LED lamp beads corresponds to an independent control unit, which is convenient for fault diagnosis and maintenance. Furthermore, each column of LED lamp beads can be turned on in sequence according to a specific order and time interval through a preset program, so as to achieve the dynamic effect of the running water turn signal, thereby improving the visibility and safety of the vehicle, and providing clear turn instructions for the driver and road users.

[0063] In some embodiments, the control unit 140 is further configured to control a plurality of second opening control units 130 to be turned on in sequence according to the running turn signal input signal, and only one second opening control unit 130 is turned on at the same time.

[0064] Understandably, please continue to refer to Figure 3b and Figure 3a ,Since the second LED lamp beads in each row are connected in series, and the second LED lamp beads in each column are connected in parallel, that is, when the second LED lamp beads in the latter column are lit, current will also flow through the second LED lamp beads in the previous column, that is, the corresponding second LED lamp beads in the previous column will also be lit. Therefore, when it is necessary to light up the second LED lamp beads in the first and second columns, the control unit 140 only needs to turn on the second start control unit 130 corresponding to the second LED lamp beads in the second column.

[0065] Furthermore, when it is necessary to realize the effect of flowing water turn signal, following the instruction of the control unit 140, the control unit 140 can input the control signal to each second opening control unit 130 according to the preset lighting sequence and time interval, so that the second opening control units 130 set in the subsequent columns corresponding to the second LED lamp beads in the Mth column are turned on in sequence. And every time a turning-on control unit is turned on, the second LED lamp beads in the corresponding column will also be added to the lit column, and finally each column of the second LED lamp beads in the second LED lamp bead module can be controlled to light up in sequence, realizing a dynamic lighting effect like flowing water.

[0066] In the above embodiment, since the second LED lamp bead module includes a large number of LED lamp beads, it is designed that only one second start control unit is turned on at the same time, so the power consumption of the entire water turn signal control system can be reduced. At the same time, the heat accumulation caused by the lighting of the LED lamp beads is also reduced, thereby reducing the operating temperature of the LED lamp beads and extending their service life.

[0067] In some embodiments, the control unit 140 is also used to output an enable signal to the DC-DC conversion unit 111 according to any one of the daytime running light input signal, the position light input signal and the running turn signal input signal, so that the DC-DC conversion unit 111 can work, and control the DC-DC conversion unit 111 to perform corresponding output according to the daytime running light input signal and the position light input signal, and control the DC-DC conversion unit 111 to perform different outputs according to the running turn signal input signal and the opening status of multiple second opening control units 130.

[0068] It should be understood that when a certain light group needs to be turned on, the input signal of the light group will first pass through a trigger unit, which is suitable for receiving the input signal of the corresponding light group, performing preliminary processing on it and generating a level signal to the control unit 140. For example, taking the water turn signal as an example, please refer to Figure 4a When the input signal TL of the turn signal is input through the input end of the turn signal trigger unit, it is firstly protected against reverse connection by the anti-reverse connection diode D7, and then filtered by the filter capacitor CB35, and then divided by the voltage-dividing resistor R39 and the voltage-dividing resistor R43 and input to the switching transistor Q19. At this time, the base of the switching transistor Q19 receives the high-level signal provided in the input signal, so that the switching transistor Q19 is turned on and grounded and generates a low-level turn signal level signal TL_IN. Finally, the level signal will be input to the corresponding IO port of the MUC control chip in the control unit 140 for subsequent lighting operations.

[0069] Furthermore, when the level signal corresponding to a certain lamp group is input to the control unit 140, the control unit 140 will determine that the start-up control unit corresponding to a certain lamp group needs to be turned on at this time, so the control unit 140 will send an enable signal to the DC-DC conversion unit 111, so that the DC-DC conversion unit 111 works to provide stable current and voltage for the corresponding lamp bead module. Among them, the enable signal can be a logic level signal for activating or indicating the working state of the DC-DC conversion unit 111. At the same time, the control unit 140 will also control a corresponding start-up control unit to work to achieve specific lighting effects of different lamp groups.

[0070] For example, please refer to Figure 4b , the DC-DC chip U1 in the DC-DC conversion unit 111 receives the input power VIN through its power input terminal VCC, and uses the energy storage inductor L1 to store and release energy based on the number and voltage of LED lamp beads corresponding to different lighting effects of different lamp groups. At the same time, the working state of the energy storage inductor L1 is controlled by the switch tube Q1. When the switch tube Q1 is turned on, the energy storage inductor L1 stores energy, and when the switch tube Q1 is turned off, the energy storage inductor L1 releases energy. Among them, the switch tube Q1 can be a MOS tube, and the control signal of its gate is provided by the DC-DC chip U1. The control signal can be a signal with different duty cycles preset based on different lighting effects. Further, when the enable signal terminal EN of the DC-DC chip U1 in the DC-DC conversion unit 111 receives the enable signal sent by the control unit 140, it will drive the DC-DC chip U1 to start working accordingly. At the same time, the control unit 140 will send a preset PWM dimming signal to the current regulation input terminal of the DC-DC chip U1, so that the DC-DC chip outputs the duty cycle signal required to light up a corresponding LED lamp bead module to the MOS tube Q1, controls the opening and closing of the MOS tube Q1, thereby controlling the energy storage and release of the energy storage inductor L1, and finally converts it into an output voltage VOUT, providing stable current and voltage corresponding to the LED lamp bead module.

[0071] Optionally, the DC-DC conversion unit 111 further includes an output filter unit 410, which includes a plurality of filter capacitors and inductors for filtering the output voltage converted by the DC-DC conversion unit 111 to reduce ripple and noise in the output voltage, thereby providing a constant voltage and constant current power supply for the LED lamp bead module. Figure 4b, filter capacitors CB2, CB3, CB4, CB5, CB6, C8 and inductor L2 form a π-shaped filter to shape and filter the output voltage VOUT converted by the DC-DC chip U1, and convert the output voltage VOUT into a stable voltage source to provide it to each LED lamp bead load in the LED lamp bead module, so as to ensure a constant voltage across the LED lamp bead load, thereby ensuring a constant current across the LED lamp bead load.

[0072] In the above embodiment, the working state and output of the DC-DC conversion unit 111 are controlled according to different types of input signals to meet the different needs of daytime running lights, position lights and flowing turn lights, ensuring that they can provide optimal performance and efficiency in various situations.

[0073] In some embodiments, the power supply circuit 110 includes a first input protection unit 510 for protecting the input power of the position light, a second input protection unit 520 for protecting the input power of the daytime running light, a third input protection unit 530 for protecting the input power of the flowing turn signal light, an input filtering unit 540 and a low voltage conversion unit 550.

[0074] The first input protection unit 510, the second input protection unit 520 and the third input protection unit 530 may all refer to a power supply circuit including a voltage regulator tube, a filter capacitor and a voltage divider resistor. For example, please refer to Figure 5a Taking the first input protection unit 510 as an example, when the position light input terminal receives the 9-16V input power signal PL, after the transient suppression diode D5 in the protection unit 510 absorbs the surge voltage, static electricity and lightning surge, the residual voltage remaining after the high signal input voltage is absorbed by the voltage regulator D5 is further absorbed by the filter capacitor C2 and the voltage divider resistor R9. Finally, after the reverse connection protection diode is used for reverse connection protection, VIN is output to protect the components in the subsequent circuit from the voltage spike and surge current in the input power supply. Furthermore, the output terminal of the first input protection unit 510, the output terminal of the second input protection unit 520 and the output terminal of the third input protection unit 530 are connected together, and then connected to the input terminal of the input filter unit 540 and the input terminal of the low voltage conversion unit 550 respectively.

[0075] Among them, the low-voltage conversion unit 550 can be a circuit that converts the input higher voltage into the lower voltage required by the system. Specifically, the low-voltage conversion unit 550 is suitable for converting the input power of the position lamp, the input power of the daytime running lamp and the input power of the running turn signal lamp to supply power to the control unit 140. For example, if the operating voltage of the MUC control chip used in the control unit 140 is 5V, and the input power input of the body controller may be 9-12V, then based on the inclusion of a power chip in the low-voltage conversion unit 550, the input 9-12V voltage can be stepped down, and finally a 5V operating voltage suitable for the operation of the MUC control chip can be output. Optionally, the output voltage of the low-voltage conversion unit 550 can also be used to provide a voltage reference for some circuit loops in the running turn signal control system.

[0076] The input filter unit 540 may be a circuit loop that filters the input power to remove high-frequency noise and electromagnetic interference in the power. Specifically, the input filter unit 540 is suitable for filtering the input power of the position lamp, the input power of the daytime running lamp, and the input power of the running light and then providing them to the DC-DC conversion unit 111. For example, please refer to Figure 5b The input filter unit 540 includes a plurality of filter capacitors and a filter inductor. Specifically, the filter capacitors CB8, CB9, CB10, CB36 and the inductor L4 form a π-shaped filter circuit for filtering out various high and low frequency interference sources in the input power supply VIN, and ensuring that the power supply subsequently flowing through the DC-DC conversion unit 111 is a stable voltage. Optionally, the filter capacitors in the input filter unit 540 can be combined with capacitance values ​​of nF level and uF level, and the capacitance values ​​of the various capacitors can differ by more than 100 times, so as to reduce the influence of the anti-resonance frequency point.

[0077] In the above embodiment, the input power is processed by the first input protection unit 510 for protecting the input power of the position light, the second input protection unit 520 for protecting the input power of the daytime running light, the third input protection unit 530 for protecting the input power of the flowing turn signal light, and the input filtering unit 540, ultimately ensuring that the flowing turn signal light control system can obtain a stable and clean power supply suitable for its work from the input power provided by the body controller, thereby ensuring the normal performance and reliability of the entire flowing turn signal light control system.

[0078] In some embodiments, see Figure 6 The running water turn signal control system 100 also includes a fault feedback detection unit 610 and a fault backup light unit 620 .

[0079] Among them, the fault feedback detection unit 610 can be a circuit loop for monitoring and diagnosing the working state of the LED lamp bead module. Specifically, the fault feedback detection unit 610 is suitable for performing fault diagnosis on the second LED lamp bead module 160, and in the case of a fault in the second LED lamp bead module 160, feedback the turn signal fault signal to the control unit 140, so that the control unit 140 controls the second LED lamp bead module 160 to stop working. Exemplarily, the fault feedback detection unit 610 can monitor the working state of the second LED lamp bead module 160 in real time, and when a fault is detected, a high-level fault signal will be sent to the control unit 140 accordingly. At this time, after receiving the high-level fault signal input by the fault feedback detection unit 610, the control unit 140 will turn off multiple groups of second LED lamp beads in the second LED lamp bead module 160 through multiple second opening control units 130.

[0080] It should be understood that in the case of a failure of the second LED lamp bead module 160, in order to avoid the situation where the control unit 140 turns off all the second LED lamp bead modules 160 after receiving the high-level signal input by the fault feedback detection unit 610, resulting in the entire water turn signal not being lit, and failing to remind the driver or other road users that the vehicle is turning left or right, leading to a traffic accident, the fault feedback detection unit 610 will also feedback the fault signal to the body controller when the second LED lamp bead module 160 fails, so as to correspondingly turn on the fault backup lamp unit 620 to provide a normal turn signal. Among them, the fault backup lamp unit 620 can be a circuit loop containing LED lamp beads, which is suitable for lighting the backup lamp to provide a turn prompt when the second LED lamp bead module fails. Specifically, in the case of a failure of the second LED lamp bead module 160, the fault signal of the turn signal input by the body controller corresponds to lighting the backup LED lamp beads contained therein in the form of double flashes for prompting.

[0081] In the above embodiment, the combined use of the fault feedback detection unit and the fault backup lamp unit improves the reliability and safety of the system. The fault feedback detection unit ensures that the running turn signal control system can identify and respond to potential faults in a timely manner, while the fault backup lamp unit ensures that when the second LED lamp bead module fails, the vehicle can still send out the necessary turn signal, thereby improving the safety of the vehicle on the road and reducing the risk of traffic accidents.

[0082] In some embodiments, see Figure 7The fault feedback detection unit 610 includes a first resistor 701, a second resistor 703, a three-terminal regulator 705, a third resistor 707, a first capacitor 709, a fourth resistor 711, a first transistor 713, a fifth resistor 715, a sixth resistor 717, a seventh resistor 719, a second transistor 721, a first diode 723 and a second capacitor 725.

[0083] Among them, one end of the first resistor 701 is connected to the output terminal VOUT of the DC-DC conversion unit 111, the other end of the first resistor 701 is connected to one end of the second resistor 703, and has a first node 702, and the other end of the second resistor 703 is grounded. At the same time, the first node 702 is also connected to the reference end of the three-terminal regulator 705. Among them, the three-terminal regulator 705 can be a voltage comparison element, with three pins, which can compare the voltage input therein with the reference voltage value of the reference end. Specifically, the anode of the three-terminal regulator 705 is grounded, and the cathode of the three-terminal regulator 705 is suitable for connecting to the input power TL of the water turn signal lamp through the third resistor 707. At the same time, one end of the first capacitor 709 is connected to one end of the third resistor 707, and the other end of the first capacitor 709 is grounded.

[0084] Further, a second node 704 is provided between the third resistor 707 and the cathode of the three-terminal regulator 705. One end of the fourth resistor 711 is connected to the second node 704, and the other end of the fourth resistor 711 is connected to the first triode 713. The first triode 713 may be a PNP type triode, specifically, its collector is connected to the other end of the fourth resistor 711, the emitter of the first triode 713 is grounded through the fifth resistor 715, and the base of the first triode 713 is connected to the other end of the fourth resistor 711. The base of the second triode 721 is connected to the base of the first triode 713 and is grounded through the sixth resistor 717, and the emitter of the second triode 721 is grounded through the seventh resistor 719.

[0085] It is understandable that in order to prevent the multiple circuit components in the fault feedback detection unit 610 from being damaged due to interference from a large current, please continue to refer to Figure 7, the fault feedback detection unit 610 can use two back-to-back PNP transistors, namely the first transistor 713 and the second transistor 721, to perform fault feedback. It should be noted that this circuit structure enables the first transistor 713 and the second transistor 721 to form a current mirror, that is, the second transistor 721 is controlled by the first transistor 713, and the current of the second transistor 721 does not change due to the change of external load and interference, but is only determined by the first transistor 713. Therefore, when a large current flows from the feedback output terminal FB into the fault feedback detection unit 610, due to the effect of the current mirror, the current of the second transistor 721 will not be disturbed and increase, and finally the damage of the second transistor 721 is avoided.

[0086] Furthermore, a first diode 723 is also provided near the output end of the fault feedback detection unit 610, wherein the first diode 723 can be a voltage stabilizing diode. Specifically, the first diode 723 can be reversely connected in the circuit, that is, the cathode of the first diode 723 is connected to the collector of the second triode 721, and the anode of the first diode 723 serves as the feedback output end of the fault feedback detection unit. The feedback signal FB output by the fault feedback detection unit 610 will also be filtered by the second capacitor 725. Among them, one end of the second capacitor 725 is connected to the anode of the first diode 723, and the other end of the second capacitor 725 is grounded to filter the voltage FB at the feedback output end.

[0087] Exemplarily, a reference voltage value can be preset to determine whether the second LED lamp bead module 160 fails. Specifically, when the output voltage VOUT output by the DC-DC chip in the DC-DC conversion unit 111 enters the fault feedback detection unit 610, it will first be divided by the first resistor 701 and the second resistor 703, and the voltage after the voltage division will be input into the three-terminal regulator 705, and compared with the preset reference voltage of the reference end of the three-terminal regulator 705. If the voltage value after the voltage division is less than the preset reference voltage value, it means that the output voltage VOUT at this time is in a normal state, that is, the second LED lamp bead module 160 is in a normal working state. In this state, the output end of the three-terminal regulator 705 will output a low high level, which is input into the first transistor 713 and the second transistor 721 of the current mirror through the second node 704 and the fourth resistor 711, so that the first transistor 713 and the second transistor 721 are turned on and grounded. Further, the voltage of the feedback output terminal FB is pulled down, and no high level signal is output. At this time, it can be considered that the second LED lamp bead module 160 has no fault.

[0088] It is also understandable that when the second LED lamp bead module 160 fails, the output voltage VOUT output by the DC-DC chip in the DC-DC conversion unit 111 will be abnormal. At this time, the voltage after voltage division is input into the three-terminal regulator 705 and compared with the preset reference voltage of the reference end of the three-terminal regulator 705. It will be greater than the preset reference voltage value, indicating that the output voltage VOUT at this time is in an abnormal state, that is, the second LED lamp bead module 160 is in an abnormal working state. In this state, the output end of the three-terminal regulator 705 will output a low-low level, so that the first transistor 713 and the second transistor 721 are turned off, thereby causing the voltage of the feedback output end FB to not be pulled down and remain at a high level, thereby reflecting that the second LED lamp bead module 160 has failed. Further, based on the high-level signal of the feedback output end FB, the water turn signal control system 100 performs subsequent fault warning operations accordingly.

[0089] In the above embodiment, by comparing the magnitude relationship between the output voltage output by the DC-DC conversion unit 111 in different states and the preset reference voltage, it is possible to further determine whether the LED lamp bead module has a fault, making fault diagnosis more direct and simple, and facilitating rapid location and problem solving. In addition, a feedback output terminal is also provided to output a high-level signal in the event of a fault, so that the system can respond in time and perform subsequent fault warning operations, thereby enhancing driving safety.

[0090] In some embodiments, please continue to refer to Figure 7 The faulty backup lamp unit 620 includes an eighth resistor 801, a ninth resistor 803, a third capacitor 805, a third transistor 807, a tenth resistor 809, an eleventh resistor 811, a twelfth resistor 813, a fourth capacitor 815, a fourth transistor 817 and a backup LED lamp bead module 819.

[0091] Among them, one end of the eighth resistor 801 is connected to the second node 704. One end of the ninth resistor 803 is connected to the other end of the eighth resistor 801, and has a third node 802, and the other end of the ninth resistor 803 is grounded. One end of the third capacitor 805 is connected to the third node 802, and the other end of the third capacitor 805 is grounded. The third node 802 is also connected to a third triode 807, wherein the third triode 807 can be a transistor used as a switch, specifically, the base of the third triode 807 is connected to the third node 802, and the emitter of the third triode 807 is grounded. One end of the tenth resistor 809 is suitable for connecting to the input power supply TL of the running water turn signal lamp, and the other end of the tenth resistor 809 is connected to the collector of the third triode 809. Specifically, the tenth resistor 809 can be used as a bias resistor of the third triode 807 to provide a bias voltage for the third triode 807. At the same time, one end of the tenth resistor 809 is also connected to the eleventh resistor 811, and the other end of the eleventh resistor 811 is connected to the twelfth resistor 813 and has a fourth node 804, and the other end of the twelfth resistor 813 is grounded. At the same time, the twelfth resistor 813 is connected in parallel with a fourth capacitor 815, specifically, one end of the fourth capacitor 815 is connected to the fourth node 804, and the other end of the fourth capacitor 815 is also grounded.

[0092] Furthermore, the base of the fourth transistor 817 is connected to the fourth node 804, the emitter of the fourth transistor 817 is grounded, the collector of the fourth transistor 817 is connected to the cathode of the spare LED lamp bead module 819, and the anode of the spare LED lamp bead module 819 is suitable for connecting to the input power supply TL of the running turn signal, and is used for lighting up in the form of double flashing in response to the turn signal fault signal input by the body controller when the second LED lamp bead module 160 fails, and issuing an early warning.

[0093] Exemplarily, when the second LED lamp bead module 160 fails, the output voltage VOUT output by the DC-DC chip in the DC-DC conversion unit 111 will be abnormal. At this time, the voltage after voltage division is input into the three-terminal regulator 705 and compared with the preset reference voltage of the reference end of the three-terminal regulator 705. It will be greater than the preset reference voltage value, indicating that the output voltage VOUT at this time is in an abnormal state, that is, the second LED lamp bead module 160 is in an abnormal working state. In this state, the output end of the three-terminal regulator 705 will output a low-low level, which is input to the faulty standby lamp unit 620 through the second node 704, so that the third transistor 807 is turned off. Further, when the third transistor 807 is turned off, the base voltage of the fourth transistor 817 is not pulled down and becomes a high level, that is, the fourth transistor 817 becomes a conducting state, and can receive the input power TL of the running water turn signal, so that current passes through the standby LED lamp bead module 819, thereby causing the standby LED lamp bead module 819 to light up and flash.

[0094] In the above embodiment, the third transistor 807 and the fourth transistor 817 are used to form a cascade switch circuit, so that the fault backup lamp unit 620 can cooperate with the fault feedback detection unit 610 to achieve a warning effect. At the same time, the design of the fault backup lamp unit 620 increases the redundancy of the running turn signal control system 100, ensuring that the vehicle can still send a turn signal when a fault occurs, thereby improving the continuity of the vehicle turn signal and the reliability of driving safety.

[0095] It should be understood that the flow turn signal control system in this embodiment is presented in the form of functional units, where the units refer to ASIC (Application Specific Integrated Circuit) circuits, processors and memories that execute one or more software or fixed programs, and / or other devices that can provide the above functions. Each module in the above flow turn signal control system can be implemented in whole or in part through software, hardware, and a combination thereof. Each of the above modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each of the above modules.

[0096] For the convenience of description, the above device is described in terms of functions and is described separately in various units. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0097] This embodiment also provides a vehicle, and the vehicle control method implements the content of the above-mentioned water flow turn signal control system. The specific definition of the vehicle can refer to the definition of the water flow turn signal control system above, and will not be repeated here.

[0098] The present application is described with reference to the flow chart and / or block diagram of the flow turn signal control system according to the embodiment of the present application. It should be understood that each process and / or block in the flow chart and / or block diagram, as well as the combination of the processes and / or blocks in the flow chart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate a device for implementing the functions specified in one or more processes in the flow chart and / or one or more blocks in the block diagram.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0100] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0101] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0102] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. Since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0103] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0104] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A water turn signal control system, characterized in that: At least one of a daytime running light and a position light is integrated, the daytime running light or the position light is correspondingly provided with a first LED lamp bead module, the running turn signal light is correspondingly provided with a second LED lamp bead module, and the running turn signal light control system comprises: A power supply circuit, the power supply circuit comprising a DC-DC conversion unit, the power supply circuit being adapted to respectively connect the input power of the daytime running light, the input power of the position light and the input power of the turn signal light, and convert and output through the DC-DC conversion unit to respectively provide to the first LED lamp bead module and the second LED lamp bead module; A first start control unit, wherein the first start control unit is suitable for controlling the first LED lamp bead module to work; A plurality of second start control units, wherein the plurality of second start control units are adapted to control the plurality of LED units in the second LED lamp bead module to work in sequence; A control unit, wherein the control unit is suitable for controlling the DC-DC conversion unit and the first start control unit according to a daytime running light input signal or a position light input signal, so that the first LED lamp bead module works, and adjusting the output of the DC-DC conversion unit and controlling multiple second start control units according to a running turn signal input signal, so that multiple LED units work in sequence.

2. The water turn signal control system according to claim 1, characterized in that: The first LED lamp bead module includes N×M first LED lamp beads arranged in an array, wherein each row of first LED lamp beads are connected in series, and each column of first LED lamp beads are connected in parallel. When the first start control unit is turned on, all of the N×M first LED lamp beads are lit.

3. The water turn signal control system according to claim 2, characterized in that: The control unit is further configured to control an output of the DC-DC conversion unit according to the daytime running light input signal to be different from an output of the DC-DC conversion unit according to the position light input signal.

4. The water turn signal control system according to claim 1, characterized in that: The second LED lamp bead module includes N×M second LED lamp beads arranged in an array, each row of second LED lamp beads are connected in series, and each column of second LED lamp beads are connected in parallel, wherein: When the second start control unit corresponding to the second LED lamp bead in the first column is turned on, the second LED lamp bead in the first column lights up; When the second start control unit corresponding to the second LED lamp bead in the second column is turned on, the second LED lamp bead in the first column and the second LED lamp bead in the second column are lit at the same time; When the second start control unit corresponding to the second LED lamp bead in the Mth column is turned on, the second LED lamp bead in the first column to the second LED lamp bead in the Mth column are lit at the same time.

5. The water turn signal control system according to claim 4, characterized in that: The control unit is further used to control multiple second opening control units to be opened in sequence according to the running turn signal input signal, and only one second opening control unit is opened at the same time.

6. The water turn signal control system according to any one of claims 1 to 5, characterized in that: The control unit is also used to output an enable signal to the DC-DC conversion unit according to any one of the daytime running light input signal, the position light input signal and the flowing turn light input signal, so that the DC-DC conversion unit can work, and control the DC-DC conversion unit to perform corresponding output according to the daytime running light input signal and the position light input signal, and control the DC-DC conversion unit to perform different outputs according to the flowing turn light input signal and the opening status of multiple second opening control units.

7. The water turn signal control system according to any one of claims 1 to 5, characterized in that: The power supply circuit includes a first input protection unit for protecting the input power of the position light, a second input protection unit for protecting the input power of the daytime running light, a third input protection unit for protecting the input power of the flowing turn signal light, an input filtering unit and a low-voltage conversion unit, wherein the output end of the first input protection unit, the output end of the second input protection unit and the output end of the third input protection unit are connected together and then connected to the input end of the input filtering unit and the input end of the low-voltage conversion unit respectively, the input filtering unit is suitable for filtering the input power of the position light, the input power of the daytime running light and the input power of the flowing turn signal light and then providing them to the DC-DC conversion unit, and the low-voltage conversion unit is suitable for converting the input power of the position light, the input power of the daytime running light and the input power of the flowing turn signal light to supply power to the control unit.

8. The water turn signal control system according to any one of claims 1 to 5, characterized in that: Also includes: A fault feedback detection unit, wherein the fault feedback detection unit is adapted to perform fault diagnosis on the second LED lamp bead module and, in the event of a fault in the second LED lamp bead module, feed back a turn signal fault signal to the control unit so that the control unit controls the second LED lamp bead module to stop working; A fault backup lamp unit, wherein the fault backup lamp unit is suitable for lighting the backup lamp to provide a turn prompt when the second LED lamp bead module fails.

9. The water turn signal control system according to claim 8, characterized in that: The fault feedback detection unit comprises: A first resistor, one end of which is connected to the output end of the DC-DC conversion unit; a second resistor, one end of the second resistor being connected to the other end of the first resistor and having a first node, and the other end of the second resistor being grounded; A three-terminal regulator, wherein a reference terminal of the three-terminal regulator is connected to the first node, and an anode of the three-terminal regulator is grounded; a third resistor, one end of which is suitable for connecting to the input power supply of the water turn signal lamp, the other end of which is connected to the cathode of the three-terminal regulator and has a second node; A first capacitor, one end of the first capacitor is connected to one end of the third resistor, and the other end of the first capacitor is grounded; a fourth resistor, one end of which is connected to the second node; a first triode, wherein the collector of the first triode is connected to the other end of the fourth resistor, the emitter of the first triode is grounded through a fifth resistor, and the base of the first triode is connected to the other end of the fourth resistor; a second triode, wherein a base of the second triode is connected to a base of the first triode and is grounded via a sixth resistor, and an emitter of the second triode is grounded via a seventh resistor; a first diode, wherein a cathode of the first diode is connected to a collector of the second transistor, and an anode of the first diode serves as a feedback output terminal of the fault feedback detection unit; A second capacitor, one end of the second capacitor is connected to the anode of the first diode, and the other end of the second capacitor is grounded.

10. The water turn signal control system according to claim 9, characterized in that: The fault backup lamp unit comprises: an eighth resistor, one end of which is connected to the second node; a ninth resistor, one end of the ninth resistor being connected to the other end of the eighth resistor and having a third node, and the other end of the ninth resistor being grounded; a third capacitor, one end of the third capacitor being connected to the third node, and the other end of the third capacitor being grounded; a third triode, wherein the base of the third triode is connected to the third node, and the emitter of the third triode is grounded; a tenth resistor, one end of which is suitable for connecting to the input power supply of the water turn signal lamp, and the other end of which is connected to the collector of the third transistor; an eleventh resistor, one end of the eleventh resistor being connected to one end of the tenth resistor; a twelfth resistor, one end of the twelfth resistor is connected to the other end of the eleventh resistor and has a fourth node, and the other end of the twelfth resistor is grounded; a fourth capacitor, one end of the fourth capacitor being connected to the fourth node, and the other end of the fourth capacitor being grounded; a fourth triode, wherein a base of the fourth triode is connected to the fourth node, and an emitter of the fourth triode is grounded; A spare LED lamp bead module, wherein the cathode of the spare LED lamp bead module is connected to the collector of the fourth transistor, and the anode of the spare LED lamp bead module is suitable for connecting to the input power supply of the water turn signal lamp.

11. A vehicle, characterized in that: It comprises a water turn signal control system according to any one of claims 1-10.

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