Vehicle area controller, vehicle lighting system and vehicle

Abstract

The utility model discloses a vehicle area controller, a vehicle lighting system and a vehicle, the vehicle area controller comprises an enable control circuit and a voltage conversion circuit; the enabling control circuit is used for generating an enabling signal; the input end of the voltage conversion circuit is connected to the power supply circuit and the enabling control circuit, the output end of the voltage conversion circuit is used for being connected with a lamplight module, and the voltage conversion circuit is used for responding to the enabling signal to enter a working state and performing voltage conversion on a first power supply signal output by the power supply circuit in the working state; and the second power supply signal is used for supplying power to the light module, so that an additional vehicle lamp controller does not need to be added, the vehicle area controller is used for supplying power to the light module, the number of vehicle control units is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle electronics, and in particular to a vehicle zone controller, a vehicle lighting system and a vehicle. Background Art

[0002] As the number of vehicles continues to increase, the proportion of driving accidents is also increasing. Most of these traffic accidents occur at night. When driving at night, if the vehicle lighting is lost, the risk of traffic accidents will increase. Therefore, it is of great significance to ensure the lighting conditions of the vehicle at night through lighting function safety design to reduce the occurrence of traffic accidents.

[0003] As vehicle electronic and electrical architecture evolves from distributed to centralized, Figure 6 As shown, the current centralized vehicle electrical and electronic architecture includes a battery, a central controller, a regional controller and a vehicle lighting system, and the vehicle lighting system includes a light controller, namely, a light ECU (Electronic Control Unit, electronic control unit, referred to as ECU), and a light board connected to the light ECU. In the current centralized vehicle electrical and electronic architecture, due to the design limitations of the vehicle's central controller and vehicle regional controller, a separate light ECU is still required to meet the lighting function. However, the existing light controller cannot normally control the vehicle lighting when it is in an abnormal state, thereby increasing safety hazards. At the same time, adding an additional light controller will increase additional costs. Utility Model Content

[0004] The embodiments of the utility model provide a vehicle zone controller, a vehicle lighting system and a vehicle to solve the problem of high cost of existing vehicle electronic and electrical architecture.

[0005] A vehicle zone controller includes an enable control circuit and a voltage conversion circuit;

[0006] The enable control circuit is used to generate an enable signal;

[0007] The input end of the voltage conversion circuit is connected to the power supply circuit and the enable control circuit, and the output end of the voltage conversion circuit is used to be connected to the lighting module. The voltage conversion circuit is used to respond to the enable signal to enter a working state, and in the working state, perform voltage conversion on the first power supply signal output by the power supply circuit to output a second power supply signal, and the second power supply signal is used to power the lighting module.

[0008] Further, the enabling control circuit includes an MCU;

[0009] The input end of the MCU is connected to the main control module and the power supply circuit, and the output end of the MCU is connected to the voltage conversion circuit, and is used to output a first enable signal to the voltage conversion circuit according to a first control signal output by the main control module and a first power supply signal output by the power supply circuit.

[0010] Furthermore, the enabling control circuit also includes a step-down circuit and a signal switching module;

[0011] The input end of the step-down circuit is connected to the power supply circuit, and is used to step down the first power supply signal output by the power supply circuit and output a third power supply signal;

[0012] The input end of the signal switching module is connected to the output end of the step-down circuit, the output end of the MCU and the power supply circuit, and the output end of the signal switching module is connected to the voltage conversion circuit, and is used to output a second enable signal to the voltage conversion circuit according to the first enable signal and the third power supply signal; or, output a third enable signal to the voltage conversion circuit according to the fourth power supply signal output by the power supply circuit and the third power supply signal output by the step-down circuit.

[0013] Further, the power supply circuit includes a first power supply module and a second power supply module;

[0014] The first power supply module is connected to the voltage conversion circuit, the MCU and the step-down circuit, and is used to output a first power supply signal;

[0015] The second power supply module is connected to the signal switching module and is used to output a fourth power supply signal.

[0016] Further, the signal switching module includes a first resistance circuit, a second resistance circuit, a third resistance circuit, a fourth resistance circuit, a first switch tube and a second switch tube;

[0017] The first resistance circuit and the second resistance circuit are arranged in series between the power supply circuit and the first end of the first switch tube, and the connection node between the first resistance circuit and the second resistance circuit is connected to the MCU;

[0018] The second end of the first switch tube is connected to the first end of the fourth resistor circuit and the first end of the second switch tube, the second end of the fourth resistor circuit is connected to the step-down circuit, the third end of the first switch tube is connected to the first end of the third resistor circuit, and the second end of the third resistor circuit is grounded;

[0019] The second end of the second switch tube is connected to the step-down circuit, and the third end of the second switch tube is connected to the voltage conversion circuit.

[0020] Furthermore, the signal switching module further includes a third switch tube, a fifth resistance circuit and a sixth resistance circuit;

[0021] The first end of the third switch tube is connected to the connection node between the second resistance circuit and the first switch tube, the second end of the third switch tube is connected to the first end of the third switch tube, and the third end of the third switch tube is grounded through the fifth resistance circuit;

[0022] The first end of the third switch tube is also grounded through the sixth resistance circuit.

[0023] Furthermore, the voltage conversion circuit is a DC / DC conversion circuit.

[0024] A vehicle lighting system, characterized in that it comprises a power supply circuit, a lighting module and a vehicle zone controller;

[0025] The vehicle zone controller includes an enable control circuit and a voltage conversion circuit;

[0026] The enable control circuit is used to generate an enable signal;

[0027] The input end of the voltage conversion circuit is connected to the power supply circuit and the enable control circuit, and the output end of the voltage conversion circuit is connected to the lighting module. The voltage conversion circuit is used to respond to the enable signal to enter a working state, and in the working state, perform voltage conversion on the first power supply signal output by the power supply circuit to output a second power supply signal, and the second power supply signal is used to power the lighting module.

[0028] Further, the enabling control circuit includes an MCU; the vehicle lighting system also includes a main control module;

[0029] The input end of the MCU is connected to the main control module and the power supply circuit, and the output end of the MCU is connected to the voltage conversion circuit and the light module, and is used to output a first enable signal to the voltage conversion circuit according to a first control signal output by the main control module and a first power supply signal output by the power supply circuit; output a second control signal to the light module, and collect light information corresponding to the light module;

[0030] The main control module is connected to the MCU, and is used to receive the lighting information output by the MCU and output a first control signal to the MCU.

[0031] Furthermore, the main control module includes a central controller.

[0032] Further, the vehicle zone controller also includes a first communication module;

[0033] The first communication module is connected to the main control module and the MCU of the vehicle zone controller, and is used to transmit the first control signal to the MCU;

[0034] The MCU is connected to the lighting module, and is used to receive the first control signal and output the second control signal to the lighting module.

[0035] Furthermore, the lighting module includes a second communication module, a multi-channel constant current source module and at least two lighting circuits;

[0036] The second communication module is connected to the MCU and the multi-channel constant current source module, and is used to receive a second control signal output by the MCU, and output the second control signal to the multi-channel constant current source module;

[0037] The multi-channel constant current source module is connected to the voltage conversion circuit and at least two of the lighting circuits, and is used to control at least two lighting circuits to perform corresponding lighting actions according to the second control signal and the second power supply signal.

[0038] A vehicle comprises the above-mentioned vehicle lighting system.

[0039] The above-mentioned vehicle area controller, vehicle lighting system and vehicle, the vehicle area controller includes an enable control circuit and a voltage conversion circuit; the enable control circuit is used to generate an enable signal; the voltage conversion circuit, the input end of the voltage conversion circuit is connected to the power supply circuit and the enable control circuit, the output end of the voltage conversion circuit is used to be connected to the light module, the voltage conversion circuit is used to respond to the enable signal to enter the working state, and in the working state, the first power supply signal output by the power supply circuit is converted into a voltage to output a second power supply signal, and the second power supply signal is used to supply power to the light module, so that there is no need to add an additional vehicle light controller, and the vehicle area controller is used to power the light module, thereby reducing the number of vehicle controllers and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 is a schematic diagram of a vehicle zone controller in one embodiment of the utility model;

[0042] Figure 2 is another schematic diagram of a vehicle zone controller in one embodiment of the utility model;

[0043] Figure 3 is another schematic diagram of a vehicle zone controller in one embodiment of the utility model;

[0044] Figure 4 is another schematic diagram of a vehicle zone controller in one embodiment of the utility model;

[0045] Figure 5 is a schematic diagram of a vehicle lighting system in one embodiment of the utility model;

[0046] Figure 6 It is a schematic diagram of the vehicle electrical and electronic architecture in the background technology of the present utility model.

[0047] In the figure: 1. power supply circuit; 11. first power module; 12. second power module; 2. vehicle area controller; 21. enable control circuit; 211. MCU; 212. buck circuit; 213. signal switching module; 2131. first resistance circuit; 2132. second resistance circuit; 2133. third resistance circuit; 2134. fourth resistance circuit; 2135. fifth resistance circuit; 2136. sixth resistance circuit; 2137. first switch tube; 2138. second switch tube; 2139. third switch tube; 22. voltage conversion circuit; 23. first communication module; 3. lighting module; 31. second communication module; 32. multi-channel constant current source module; 33. at least two lighting circuits; 34. input filter module; 4. main control module. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] It should be understood that the utility model can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and fully convey the scope of the utility model to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0050] It should be understood that when an element or layer is referred to as being "on, adjacent to, connected to or coupled to other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. On the contrary, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0051] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that the spatially relative terms are intended to include different orientations of the device in use and operation in addition to the orientations shown in the figures. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0052] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be a limitation of the present invention. When used herein, the singular forms "a", "an" and " / the" are also intended to include plural forms, unless the context clearly indicates another way. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0053] In order to thoroughly understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0054] This embodiment provides a vehicle zone controller 2, such as Figure 1 As shown, it includes an enable control circuit 21 and a voltage conversion circuit 22; the enable control circuit 21 is used to generate an enable signal. The input end of the voltage conversion circuit 22 is connected to the power supply circuit 1 and the enable control circuit 21, and the output end of the voltage conversion circuit 22 is used to be connected to the lighting module 3. The voltage conversion circuit 22 is used to respond to the enable signal to enter the working state, and in the working state, the first power supply signal output by the power supply circuit 1 is converted into a voltage, and a second power supply signal is output, and the second power supply signal is used to supply power to the lighting module 3.

[0055] Exemplarily, the vehicle area controller 2 is a controller of the vehicle body area in the vehicle. It should be noted that in the related art, the control functions of the vehicle area controller 2 include but are not limited to door control, vehicle interior light control and switch control. In this embodiment, an enable control circuit 21 and a voltage conversion circuit 22 are integrated in the vehicle area controller 2 to control the light module 3 outside the vehicle, so that there is no need to add an additional light controller, and when the vehicle area controller 2 works abnormally, the enable control circuit 21 and the voltage conversion circuit 22 in the vehicle area controller 2 can make the light module 3 work normally, thereby improving driving safety.

[0056] The power supply circuit 1 includes a first power module 11 and a second power module 12. The first power module 11 and the second power module 12 are batteries in the vehicle. The first power module 11 is used to output a first power supply signal, and the second power module 12 is used to output a fourth power supply signal. Specifically, the first power module 11 and the second power module 12 are different batteries in the vehicle. The first power supply signal output by the first power module 11 is greater than the fourth power supply signal output by the second power module 12. The first power supply signal refers to the power supply signal output by the first power module 11. The fourth power supply signal refers to the power supply signal output by the second power module 12. Exemplarily, the first power supply signal is mainly used to provide a working voltage to the enable control circuit 21. The fourth power supply signal is mainly used to assist the enable control circuit 21 in generating an enable signal when the MCU (Microcontroller Unit, microcontroller unit, referred to as MCU) 211 in the enable control circuit 21 is abnormal. The first control signal is used to instruct the enable control circuit 21 to generate an enable signal.

[0057] The main control module 4 includes a central controller in the vehicle and may also include other regional controllers in the vehicle.

[0058] As an example, the enabling control circuit 21 is used to be connected to the first power module 11, the second power module 12 and the main control module 4, and outputs an enabling signal according to the first power supply signal output by the first power module 11, the second power supply signal output by the second power module 12 and the first control signal output by the main control module 4. In this example, in one application scenario, the first power supply signal provides a working voltage for the enabling control circuit 21, and the enabling control circuit 21 outputs an enabling signal according to the first control signal output by the main control module 4 and the first power supply signal output by the first power module 11. In another application scenario, when the enabling control circuit 21 works abnormally and cannot parse the first control signal output by the main control module 4, the enabling control circuit 21 automatically outputs the first power supply signal through the first power module 11 and the second power supply signal output by the second power module 12, and outputs the enabling signal. Thereby ensuring that during the operation of the vehicle, the enabling signal enabling voltage conversion circuit 22 can be reliably output to supply power to the lighting module 3.

[0059] As an example, the voltage conversion circuit 22, together with the enable control circuit 21 and the first power module 11, is also used to be connected to the lighting module 3, and is used to convert the voltage of the first power supply signal output by the power module 1 according to the enable signal, and output the second power supply signal to supply power to the lighting module 3, thereby eliminating the need for an additional car light controller and reducing costs.

[0060] In this embodiment, the vehicle area controller 2 includes an enable control circuit 21 and a voltage conversion circuit 22; the enable control circuit 21 is used to generate an enable signal; the input end of the voltage conversion circuit 22 is connected to the power supply circuit 1 and the enable control circuit 21, and the output end of the voltage conversion circuit 22 is connected to the light module 3. The voltage conversion circuit 22 enters a working state in response to the enable signal, and in the working state, performs voltage conversion on the first power supply signal output by the power supply circuit 1, and outputs a second power supply signal. The second power supply signal is used to power the light module 3, so there is no need to add an additional vehicle light controller, and the vehicle area controller 2 is used to power the light module 3, thereby reducing the number of vehicle controllers and reducing costs.

[0061] In one embodiment, if Figure 3 As shown, the enable control circuit 21 includes an input end of MCU211 connected to the main control module 4 and the power supply circuit 1, and the output end of MCU211 is connected to the voltage conversion circuit 22, which is used to output a first enable signal to the voltage conversion circuit according to the first control signal output by the main control module 4 and the first power supply signal output by the power supply circuit 1.

[0062] Further, the power supply circuit 1 includes a first power module 11 and a second power module 12. The enable control circuit 21 also includes a step-down circuit 212 and a signal switching module 213; the MCU 211 is connected to the first power module 11, and is used to be connected to the main control module 4, and output a first enable signal according to the first control signal and the first power supply signal; the step-down circuit 212 is connected to the first power module 11, and is used to step down the first power supply signal and output a third power supply signal; the signal switching module 213 is connected to the second power module 12, the MCU 211, the step-down circuit 212 and the voltage conversion circuit 22, and is used to output a second enable signal to the voltage conversion circuit 22 according to the first enable signal and the third power supply signal; or, according to the fourth power supply signal of the second power module 12 and the third power supply signal output by the step-down circuit 212, the third enable signal is output to the voltage conversion circuit 22.

[0063] As an example, MCU211 is connected to the first power module 11 and is used to output a first enable signal. In this example, MCU211 is connected to the first power module 11 through an input power management module, which is used to process the first power supply signal output by the first power module 11 and input the processed first power supply signal to MCU211 so that MCU211 can work normally. The input power management module processes the first power supply signal including filtering, voltage conversion and voltage stabilization. It can be understood that the input power management module can adopt technologies known to those skilled in the art to ensure the stability and reliability of the first power supply signal input to MCU211. In this example, when MCU211 works normally, it can output a first enable signal according to the first control signal and the first power supply signal, which is processed by the signal switching module 213 to drive the voltage conversion module to convert the first power supply signal output by the first power module 11 into a second power supply signal that can be used by the lighting module 3.

[0064] As an example, the step-down circuit 212 is connected to the first power module 11, and is used to step down the first power supply signal and output the third power supply signal. In this example, since the voltage value corresponding to the first power supply signal directly received from the first power module 11 is too large, it is necessary to step down the first power supply signal to obtain a third power supply signal of a suitable size, so that the signal switching module 213 can generate a second enable signal based on the first enable signal and the third power supply signal, and output the second enable signal to the voltage conversion circuit 22.

[0065] As an example, the signal switching module 213 is connected to the second power module 12, the MCU 211, the buck circuit 212 and the voltage conversion circuit 22. When the MCU 211 works normally, the signal switching module 213 outputs the second enable signal according to the first enable signal and the third power supply signal; or, when the MCU 211 works abnormally, that is, it cannot output the first enable signal, the signal switching module 213 outputs the third enable signal according to the fourth power supply signal of the second power module 12 and the third power supply signal output by the buck circuit 212, so that when the MCU 211 is abnormal, the third enable signal is output, so that the voltage conversion circuit 22 can convert the first power supply signal output by the power module 1 into the third power supply signal that can be used by the light module 3 according to the second enable signal or the third enable signal when the vehicle body area controller 2 is normal or abnormal, so that when the vehicle body area controller 2 is abnormal, the light module 3 can also be driven to work normally, thereby improving driving safety.

[0066] In one application scenario, for example, when a user is driving a vehicle at night, if the MCU211 in the vehicle body area controller 2 fails, even if the MCU211 in the control circuit 21 fails, the control circuit 21 can output a third enable signal, and the third enable signal controls the voltage conversion circuit 22 to normally convert the first power supply signal output by the first power supply module 11 into a voltage, and output a second power supply signal for driving the lighting module 3 to work, for example, driving the low beam of the lighting module 3 to work normally, so that when driving at night and an abnormal situation occurs in the vehicle body area controller 2, the lighting module 3 can still be driven to work normally, thereby improving driving safety.

[0067] In this embodiment, the enabling control circuit 21 includes an MCU211, a buck circuit 212 and a signal switching module 213; the MCU211 is connected to the first power module 11, and is used to be connected to the main control module 4, and outputs a first enabling signal according to the first control signal and the first power supply signal; the buck circuit 212 is connected to the first power module 11, and is used to buck the first power supply signal and output a third power supply signal; the signal switching module 213 is connected to the second power module 12, the MCU211, the buck circuit 212 and the voltage conversion circuit 22, and is used to output a third power supply signal according to the first control signal and the first power supply signal. The first enable signal and the fourth power supply signal, the second enable signal to the voltage conversion circuit 22; or, according to the fourth power supply signal of the second power supply module 12 and the third power supply signal output by the step-down circuit 212, the third enable signal is output to the voltage conversion circuit 22, so that the voltage conversion circuit 22 can convert the first power supply signal output by the first power supply module 11 into a second power supply signal that can be used by the lighting module 3 when the MCU211 is normal or abnormal, so that when the MCU211 is abnormal, the lighting module 3 can also be driven to work normally, thereby improving driving safety.

[0068] In one embodiment, if Figure 4 As shown, the signal switching module 213 includes a first resistor circuit 2131, a second resistor circuit 2132, a third resistor circuit 2133, a fourth resistor circuit 2134, a first switch tube 2137 and a second switch tube 2138; the first resistor circuit 2131 and the second resistor circuit 2132 are arranged in series between the power supply circuit 1 and the first end of the first switch tube 2137, for example, they are arranged in series between the second power supply module 12 and the first end of the first switch tube 2137, and the first resistor circuit 2131 and the second resistor circuit 2132 are arranged in series between the first resistor circuit 2131 and the second resistor circuit 2132. A connection node is connected to MCU211; the second end of the first switch tube 2137 is connected to the first end of the fourth resistance circuit 2134 and the first end of the second switch tube 2138, the second end of the fourth resistance circuit 2134 is connected to the buck circuit 212, the third end of the first switch tube 2137 is connected to the first end of the third resistance circuit 2133, and the second end of the third resistance circuit 2133 is grounded; the second end of the second switch tube 2138 is connected to the buck circuit 212, and the third end of the second switch tube 2138 is connected to the voltage conversion circuit 22.

[0069] Among them, the resistance values ​​presented by the first resistance circuit 2131, the second resistance circuit 2132, the third resistance circuit 2133 and the fourth resistance circuit 2134 can be selected according to actual experience. Exemplarily, the first resistance circuit 2131, the second resistance circuit 2132, the third resistance circuit 2133 and the fourth resistance circuit 2134 may include one resistor or at least two resistors respectively. When at least two resistors are included, the at least two resistors may be connected in series or in parallel, without limitation. The first switch tube 2137 and the second switch tube 2138 may be transistors of different types or transistors of the same type. Preferably, the first switch tube 2137 is a bipolar transistor. The second switch tube 2138 is a field effect transistor.

[0070] As an example, the first resistor circuit 2131 and the second resistor circuit 2132 are arranged in series between the second power module 12 and the base of the first switch tube 2137, the collector of the first switch tube 2137 is connected to the gate of the second switch tube 2138, the emitter of the first switch tube 2137 is connected to the first end of the third resistor circuit 2133, and the second end of the third resistor circuit 2133 is grounded; the source of the second switch tube 2138 is connected to the step-down circuit 212, and the drain of the second switch tube 2138 is connected to the voltage conversion circuit 22. In this example, when the MCU211 works normally, the first enable signal is output, and the first enable signal drives the first switch tube 2137 to turn on through the second resistor circuit 2132. After the first switch tube 2137 is turned on, due to the voltage division effect of the third resistor circuit 2133 and the fourth resistor circuit 2134, the second switch tube 2138 is driven to turn on. In this way, the third end of the second switch tube 2138 outputs a normal enable signal to the voltage conversion circuit 22. When the MCU 211 works abnormally, it cannot output the first enable signal. At this time, the fourth power supply signal input by the second power supply module 12 drives the first switch tube 2137 to turn on through the first resistor circuit 2131 and the second resistor circuit 2132. After the first switch tube 2137 is turned on, due to the voltage division effect of the third resistor circuit 2133 and the fourth resistor circuit 2134, the second switch tube 2138 is driven to turn on. In this way, the third end of the second switch tube 2138 outputs a normal enable signal to the voltage conversion circuit 22. In this way, the voltage conversion circuit 22 can convert the first power supply signal output by the first power supply module 11 into the second power supply signal that can be used by the light module 3 when the vehicle body area controller 2 is normal or abnormal, so that when the vehicle body area controller 2 is abnormal, the light module 3 can also be driven to work normally, thereby improving driving safety.

[0071] In one embodiment, if Figure 4 As shown, the signal switching module 213 also includes a third switch tube 2139, a fifth resistance circuit 2135 and a sixth resistance circuit 2136; the first end of the third switch tube 2139 is connected to the connection node between the second resistance circuit 2132 and the first switch tube 2137, the second end of the third switch tube 2139 is connected to the first end of the third switch tube 2139, and the third end of the third switch tube 2139 is grounded through the fifth resistance circuit 2135; the first end of the third switch tube 2139 is also grounded through the sixth resistance circuit 2136.

[0072] The first switch tube 2137 may be a bipolar transistor or a field effect transistor.

[0073] As an example, the base or gate of the third switch tube 2139 is connected to the connection node between the second resistance circuit 2132 and the first switch tube 2137, the collector or source of the third switch tube 2139 is connected to the base or gate of the third switch tube 2139, the emitter or drain of the third switch tube 2139 is grounded through the fifth resistance circuit 2135, and the first end of the third switch tube 2139 is also grounded through the sixth resistance circuit 2136.

[0074] In this embodiment, the first switch tube 2137 can be driven to turn on more stably through the third switch tube 2139 , the fifth resistance circuit 2135 and the sixth resistance circuit 2136 , thereby ensuring the working stability of the first switch tube 2137 .

[0075] Alternatively, if Figure 4 As shown, the signal switching module 213 further includes a capacitor C1 , a diode D1 and an inductor L1 , and the capacitor C1 , the diode D1 and the inductor L1 are used for filtering or voltage stabilization to improve the stability of the signal switching module 213 .

[0076] In one embodiment, the voltage conversion circuit 22 is a DC / DC conversion circuit.

[0077] In this embodiment, since the light module 3 is powered directly by the vehicle battery, the first power supply signal needs to be converted by a DC / DC conversion circuit to meet the power supply requirement of the light module 3 .

[0078] This embodiment provides a vehicle lighting system, such as Figure 5 As shown, it includes a power supply circuit 1, a lighting module 3 and a vehicle area controller 2. The vehicle area controller 2 includes an enable control circuit 21 and a voltage conversion circuit 22; the enable control circuit 21 is used to generate an enable signal. The input end of the voltage conversion circuit 22 is connected to the power supply circuit 1 and the enable control circuit 21, and the output end of the voltage conversion circuit 22 is used to be connected to the lighting module 3. The voltage conversion circuit 22 is used to respond to the enable signal to enter the working state, and in this working state, the first power supply signal output by the power supply circuit 1 is converted into a voltage, and a second power supply signal is output, and the second power supply signal is used to supply power to the lighting module 3.

[0079] Exemplarily, the power supply circuit 1 includes a first power module 11 and a second power module 12 .

[0080] As an example, the first power module 11 is connected to the vehicle area controller 2, and is used to provide a first power supply signal to the vehicle area controller 2; the vehicle area controller 2 is connected to the first power module 11, the second power module 12, the main control module 4 and the lighting module 3, and is used to output a second power supply signal according to the first power supply signal output by the first power module 11, the fourth power supply signal output by the second power module 12 and the first control signal output by the main control module 4; the second power supply signal is used to power the lighting module 3, so that there is no need to add an additional car light controller, and the vehicle area controller 2 is used to power the lighting module 3, thereby reducing the cost of the entire vehicle.

[0081] Further, the enabling control circuit includes an MCU 211; the vehicle lighting system also includes a main control module 4;

[0082] The input end of MCU211 is connected to the main control module 2 and the power supply circuit 1, and the output end of MCU211 is connected to the voltage conversion circuit 22 and the lighting module 3, and is used to output a first enable signal to the voltage conversion circuit 22 according to the first control signal output by the main control module 4 and the first power supply signal output by the power supply circuit 1; output a second control signal to the lighting module 3, and collect lighting information corresponding to the lighting module 3; the main control module 4 is connected to MCU211, and is used to receive the lighting information output by MCU211, and output a first control signal to MCU211.

[0083] In one embodiment, if Figure 5 As shown, the main control module 4 includes a central controller, which is connected to the vehicle area controller 2 and is used to receive the light information output by the vehicle area controller 2 and output a first control signal to the vehicle area controller 2 .

[0084] The lighting information of the lighting module 3 includes the switch signal of the lighting module 3 by the driver, whether the LED lamp in the lighting module 3 is open circuit or short circuit, the temperature of the lighting module 3, etc. It can be understood that the vehicle area controller 2 can also be configured to monitor the input voltage, clock state, program running state, and communication state by using relevant technologies to ensure the safety of the vehicle lighting system.

[0085] In this embodiment, the main control module 4 receives the lighting information output by the vehicle area controller 2, and outputs a first control signal to the vehicle area controller 2; illustratively, the main control module 4 collects the switch signal of the driver on the lighting module 3, whether the LED light in the lighting module 3 is open or short-circuited, the temperature of the lighting module 3, etc., generates a first control signal, and outputs the first control signal to the vehicle area controller 2. After receiving the first control signal, the vehicle area controller 2 analyzes and processes the first control signal, outputs a second control signal to the lighting module 3, and controls the lighting module 3 to perform corresponding lighting actions. In this embodiment, the processing logic of the first control signal and the second control signal in the main control module 4 and the vehicle area controller 2 can adopt the technology known to those skilled in the art, which will not be repeated here.

[0086] For example, in an application scenario, the vehicle area controller 2 collects the status of the LED light group in the lighting module 3 to the central domain controller. When the central domain controller receives the LED open circuit or short circuit, it should turn on the low beam, turn on the front position light, turn off the high beam, and close the corresponding channels of the open circuit or short circuit LEDs, and reduce the brightness of the low beam and front position light to maintain the minimum required brightness, and issue a warning instruction to remind the driver. For example, the temperature of the lighting module 3 is calculated. When the central domain controller receives that the temperature of the lamp module exceeds a certain range, the central domain controller should reduce the brightness of each LED lamp to prevent failure caused by LED overheating.

[0087] In one embodiment, the vehicle area controller 2 also includes a first communication module 23; the first communication module 23 is connected to the main control module 4 and the MCU211 of the vehicle area controller 2, and is used to transmit a first control signal to the MCU211; the MCU211 is connected to the lighting module 3, and is used to receive the first control signal and output a second control signal to the lighting module 3.

[0088] In this embodiment, the first communication module 23 is connected to the main control module 4 and the MCU211 of the vehicle area controller 2, and is used to transmit the first control signal to the MCU211; the MCU211 is connected to the light module 3, and is used to receive the first control signal and output the second control signal to the light module 3, so as to realize the transmission of the first control signal through the first communication module 23, and parse the first control signal through the MCU211, and output the second control signal. It can be understood that the first communication module 23 can adopt the known technology of those skilled in the art to ensure that the first control signal can be transmitted normally, and there is no limitation here.

[0089] In one embodiment, the lighting module 3 includes a second communication module 31, a multi-channel constant current source module 32 and at least two lighting circuits 33; the second communication module 31 is connected to the vehicle area controller 2 and the multi-channel constant current source module 32, and is used to receive the second control signal output by the vehicle area controller 2, and output the second control signal to the multi-channel constant current source module 32; the multi-channel constant current source module 32 is connected to the vehicle area controller 2 and at least two lighting circuits 33, and is used to control at least two lighting circuits to perform corresponding lighting actions according to the second control signal and the second power supply signal.

[0090] Among them, the second communication module 31 refers to a communication module for transmitting the second control signal. The first communication module 23 can be a well-known technology of those skilled in the art, and it is sufficient to ensure that the first control signal can be transmitted normally, and there is no limitation here. The multi-channel constant current source module 32 can adopt a multi-channel constant current source technology well known to those skilled in the art, and there is no limitation here. The at least two lighting circuits 33 include a low beam circuit, a front position light circuit, and a high beam circuit. The low beam circuit, the front position light circuit, and the high beam circuit all include LED lights.

[0091] As an example, the second communication module 31 is connected to the vehicle area controller 2 and the multi-channel constant current source module 32, and is used to receive the second control signal output by the vehicle area controller 2, and output the second control signal to the multi-channel constant current source module 32; the multi-channel constant current source module 32 is connected to the vehicle area controller 2 and at least two lighting circuits 33, and is used to control at least two lighting circuits to perform corresponding lighting actions according to the second control signal and the second power supply signal, thereby stably and reliably controlling at least two lighting circuits to perform corresponding lighting actions through the multi-channel constant current source module 32.

[0092] Exemplarily, the Fail-Safe state of the multi-channel constant current source module 32 can also be configured in at least two lighting circuits 33. When the communication with the vehicle area controller 2 is lost, the channel corresponding to the low beam circuit of the multi-channel constant current source module 32 remains in an open state, the channel corresponding to the high beam circuit remains in a closed state, and the channel corresponding to the front position light circuit remains in an open state. In this way, in special circumstances (night driving) and when an abnormal situation occurs in the vehicle area controller 2, the lighting module 3 can still be driven to work normally, thereby improving driving safety.

[0093] Furthermore, the lighting module 3 further includes an input filter module 34. The input filter module 34 is disposed between the voltage conversion module and the multi-channel constant current source module 32, and is used to filter the input second power supply signal to obtain a stable and reliable second power supply signal.

[0094] This embodiment provides a vehicle, comprising the above-mentioned vehicle lighting system.

[0095] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A vehicle zone controller, characterized in that: including an enabling control circuit and a voltage conversion circuit; The enable control circuit is used to generate an enable signal; The input end of the voltage conversion circuit is connected to the power supply circuit and the enable control circuit, and the output end of the voltage conversion circuit is used to be connected to the lighting module. The voltage conversion circuit is used to respond to the enable signal to enter a working state, and in the working state, perform voltage conversion on the first power supply signal output by the power supply circuit to output a second power supply signal, and the second power supply signal is used to power the lighting module.

2. The vehicle zone controller according to claim 1, characterized in that: The enabling control circuit includes an MCU; The input end of the MCU is connected to the main control module and the power supply circuit, and the output end of the MCU is connected to the voltage conversion circuit, and is used to output a first enable signal to the voltage conversion circuit according to a first control signal output by the main control module and a first power supply signal output by the power supply circuit.

3. The vehicle zone controller according to claim 2, characterized in that: The enabling control circuit also includes a step-down circuit and a signal switching module; The input end of the step-down circuit is connected to the power supply circuit, and is used to step down the first power supply signal output by the power supply circuit and output a third power supply signal; The input end of the signal switching module is connected to the output end of the step-down circuit, the output end of the MCU and the power supply circuit, and the output end of the signal switching module is connected to the voltage conversion circuit, and is used to output a second enable signal to the voltage conversion circuit according to the first enable signal and the third power supply signal; or, output a third enable signal to the voltage conversion circuit according to the fourth power supply signal output by the power supply circuit and the third power supply signal output by the step-down circuit.

4. The vehicle zone controller according to claim 3, characterized in that: The power supply circuit includes a first power supply module and a second power supply module; The first power supply module is connected to the voltage conversion circuit, the MCU and the step-down circuit, and is used to output a first power supply signal; The second power supply module is connected to the signal switching module and is used to output a fourth power supply signal.

5. The vehicle zone controller according to claim 3, characterized in that: The signal switching module includes a first resistance circuit, a second resistance circuit, a third resistance circuit, a fourth resistance circuit, a first switch tube and a second switch tube; The first resistance circuit and the second resistance circuit are arranged in series between the power supply circuit and the first end of the first switch tube, and a connection node between the first resistance circuit and the second resistance circuit is connected to the MCU; The second end of the first switch tube is connected to the first end of the fourth resistor circuit and the first end of the second switch tube, the second end of the fourth resistor circuit is connected to the step-down circuit, the third end of the first switch tube is connected to the first end of the third resistor circuit, and the second end of the third resistor circuit is grounded; The second end of the second switch tube is connected to the step-down circuit, and the third end of the second switch tube is connected to the voltage conversion circuit.

6. The vehicle zone controller according to claim 5, characterized in that: The signal switching module further includes a third switch tube, a fifth resistance circuit and a sixth resistance circuit; The first end of the third switch tube is connected to the connection node between the second resistance circuit and the first switch tube, the second end of the third switch tube is connected to the first end of the third switch tube, and the third end of the third switch tube is grounded through the fifth resistance circuit; The first end of the third switch tube is also grounded through the sixth resistance circuit.

7. The vehicle zone controller according to any one of claims 1 to 6, characterized in that: The voltage conversion circuit is a DC / DC conversion circuit.

8. A vehicle lighting system, characterized in that: Including power supply circuit, lighting module and vehicle zone controller; The vehicle zone controller includes an enable control circuit and a voltage conversion circuit; The enable control circuit is used to generate an enable signal; The input end of the voltage conversion circuit is connected to the power supply circuit and the enable control circuit, and the output end of the voltage conversion circuit is connected to the lighting module. The voltage conversion circuit is used to respond to the enable signal to enter a working state, and in the working state, perform voltage conversion on the first power supply signal output by the power supply circuit to output a second power supply signal, and the second power supply signal is used to power the lighting module.

9. The vehicle lighting system according to claim 8, characterized in that The enabling control circuit includes an MCU; the vehicle lighting system also includes a main control module; The input end of the MCU is connected to the main control module and the power supply circuit, and the output end of the MCU is connected to the voltage conversion circuit and the lighting module, and is used to output a first enable signal to the voltage conversion circuit according to a first control signal output by the main control module and a first power supply signal output by the power supply circuit; Outputting a second control signal to the lighting module, and collecting lighting information corresponding to the lighting module; The main control module is connected to the MCU, and is used to receive the lighting information output by the MCU and output a first control signal to the MCU.

10. A vehicle, characterized in that: Comprising a vehicle lighting system as claimed in claim 8 or 9.

Images