Light control circuit, light system and vehicle
By using simple pure hardware to build logic circuits in vehicles, combined with switching circuits and delay circuits, the priority lighting function of turn signals is realized, solving problems such as complex circuit design and high cost in the existing technology, and reducing hardware and development costs.
Patent Information
- Application Number
- CN202420657238.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-04-01
AI Technical Summary
The existing vehicle rear position lights and turn signals share the luminous surface, resulting in complex circuit design and high cost, and complex software development, resulting in high development costs.
The logic circuit is built using simple pure hardware, and the priority lighting function of the turn signal is realized through the combination of switching circuits, delay circuits, first lighting circuits and second lighting drive circuits, reducing hardware and development costs.
By simplifying circuit design, hardware costs are reduced and the complexity of software development is avoided, thus reducing development costs and efficient control of turn signals and position lights.
Smart Images
Figure CN222750602U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle lighting control, in particular to a lighting control circuit, a lighting system and a vehicle. Background Art
[0002] For current models where the rear position lights and turn signals share or partially share the light-emitting surface, regulations require that while the turn signals are flashing (usually 400ms on, 400ms off, flashing back and forth), the position lights of the shared part should be extinguished. After the turn signals finish flashing, the position lights should automatically return to their previous lighting state. Therefore, the rear combination lights need to use a circuit to prioritize the lighting of the turn signals.
[0003] In the related technology, the circuit design is complex, and LDO (Low DropOut Voltage Regulator) and MCU kits are usually used, resulting in high hardware costs. In addition, MCU software development and testing are complex, resulting in high development costs, which urgently needs to be improved. Utility Model Content
[0004] The utility model provides a lighting control circuit, a lighting system and a vehicle to solve the problems of complex circuit design and high cost in related technologies. The hardware cost is reduced by building a simple pure hardware logic circuit, and no software development is involved, thereby reducing the development cost.
[0005] In a first aspect, a light control circuit is provided, comprising: a switch circuit, a delay circuit, a first light driving circuit and a second light driving circuit, wherein:
[0006] The switch circuit is electrically connected to the ground node, the delay circuit, and the second light driving circuit respectively;
[0007] The input end of the first light driving circuit is electrically connected to the first power access node, the output end of the first light driving circuit is electrically connected to the first vehicle light, and the first light driving circuit is used to light up the first vehicle light;
[0008] The input end of the delay circuit is electrically connected to the input end of the first light driving circuit and the first power access node respectively, and the output end of the delay circuit is electrically connected to the ground node and the switch circuit respectively; and
[0009] The input end of the second light driving circuit is electrically connected to the second power access node, the output end of the second light driving circuit is electrically connected to the second vehicle light, and the second light driving circuit is used to light up the second vehicle light.
[0010] In combination with the first aspect, in some possible implementations, the delay circuit includes:
[0011] a diode, wherein an anode of the diode is electrically connected to an input end of the first light driving circuit and the first power access node respectively;
[0012] An energy storage component, wherein an input end of the energy storage component is electrically connected to the cathode of the diode, and an output end of the energy storage component is electrically connected to the ground node and the switch circuit respectively;
[0013] A first resistor, wherein an input end of the first resistor is electrically connected to an input end of the energy storage component and a cathode of the diode respectively, and an output end of the first resistor is electrically connected to the ground node and the switch circuit respectively.
[0014] In combination with the first aspect and the above implementation manner, in some possible implementation manners, the switch circuit includes:
[0015] a first switch, wherein a control terminal of the first switch is electrically connected to a cathode of the diode, and a first terminal of the first switch is electrically connected to the ground node;
[0016] a second switch, wherein a control end of the second switch is electrically connected to a second end of the first switch, and a first end of the second switch is electrically connected to the ground node;
[0017] A third switch, wherein the control end of the third switch is electrically connected to the second end of the second switch, the first end of the third switch is electrically connected to the second power access node, and the second end of the third switch is electrically connected to the input end of the second light driving circuit.
[0018] In combination with the first aspect and the above implementation manner, in some possible implementation manners, the delay circuit further includes:
[0019] A second resistor, wherein an input end of the second resistor is electrically connected to an input end of the first resistor, an input end of the energy storage component and a cathode of the diode respectively, and an output end of the second resistor is electrically connected to the switch circuit.
[0020] In combination with the first aspect and the above implementation manner, in some possible implementation manners, the switch circuit includes:
[0021] a fourth switch, wherein a control end of the fourth switch is electrically connected to the output end of the second resistor, and a first end of the fourth switch is electrically connected to the ground node;
[0022] a fifth switch, wherein a control end of the fifth switch is electrically connected to the second end of the fourth switch, and a first end of the fifth switch is electrically connected to the ground node;
[0023] A sixth switch, wherein the control end of the sixth switch is electrically connected to the second end of the fifth switch, the first end of the sixth switch is electrically connected to the second power access node, and the second end of the sixth switch is electrically connected to the input end of the second light driving circuit.
[0024] In combination with the first aspect and the above implementation manner, in some possible implementation manners, the switch circuit further includes:
[0025] a third resistor, wherein an input end of the third resistor is electrically connected to the second end of the first switch and the control end of the second switch respectively, and an output end of the third resistor is electrically connected to the second power access node and the first end of the third switch respectively;
[0026] a fourth resistor, wherein an input end of the fourth resistor is electrically connected to the second end of the second switch and the control end of the third switch respectively, and an output end of the fourth resistor is electrically connected to the second power supply access node, the output end of the third resistor and the first end of the third switch respectively.
[0027] In combination with the first aspect and the above implementations, in some possible implementations, the first switch, the second switch, the fourth switch and the fifth switch are all triodes, and the third switch and the sixth switch are all MOS tubes.
[0028] In combination with the first aspect and the above implementations, in some possible implementations, the first light driving circuit is a turn signal driving circuit; and the second light driving circuit is a position light driving circuit.
[0029] According to the lighting control circuit of the utility model, the switch circuit is electrically connected to the ground node, the delay circuit and the second light driving circuit, the first light driving circuit is electrically connected to the first power access node and the first car light, and is used to light up the first car light; the delay circuit is electrically connected to the first light driving circuit and the ground node, and the output end is electrically connected to the ground node; the second light driving circuit is electrically connected to the second power access node and the second car light, and is used to light up the second car light. Thus, the problems of complex circuit design and high cost in the related technology are solved, and the hardware cost is reduced by building a simple pure hardware logic circuit, and no software development is involved, thereby reducing the development cost.
[0030] In a second aspect, a lighting system is provided, comprising the above-mentioned lighting control circuit.
[0031] According to the lighting system of the present invention, the above-mentioned lighting control circuit solves the problems of complex circuit design and high cost in related technologies. By building a simple pure hardware logic circuit, the hardware cost is reduced and no software development is involved, thereby reducing the development cost.
[0032] In a second aspect, a vehicle is provided, comprising the above-mentioned lighting system.
[0033] The vehicle according to the utility model solves the problems of complex circuit design and high cost in related technologies through the above-mentioned lighting system. The hardware cost is reduced by building a simple pure hardware logic circuit, and no software development is involved, thereby reducing the development cost.
[0034] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:
[0036] Figure 1 It is a structural schematic diagram of a lighting control circuit in the related art;
[0037] Figure 2 A schematic diagram of the structure of a lighting control circuit provided according to an embodiment of the utility model;
[0038] Figure 3 It is a structural schematic diagram of adding a second resistor in the lighting control circuit according to an embodiment of the utility model;
[0039] Figure 4 A schematic diagram of the structure of a switch circuit in a lighting control circuit according to an embodiment of the utility model, which includes a fourth switch, a fifth switch and a sixth switch;
[0040] Figure 5 It is a structural schematic diagram of adding a third resistor and a fourth resistor to the lighting control circuit according to an embodiment of the utility model;
[0041] Figure 6 The figure is a schematic diagram of the structure of a lighting control circuit according to an embodiment of the utility model. DETAILED DESCRIPTION
[0042] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application may also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.
[0043] In related technologies, such as Figure 1 As shown, an IC (Integrated Circuit) such as an MCU (Micro Controller Unit) is usually used to collect the power supply status of the turn signal lamp, disconnect the power supply of the position lamp, and restore the power supply of the position lamp 600ms after the turn signal lamp is turned off. Figure 1 As shown in the figure, when only the position light (PL) is turned on, the MCU detects that only the position light is powered, and the MCU controls the switch to close. At this time, only the position light works; when only the turn signal (TURN / TL) is turned on, the position light is not powered, and the MCU controls the switch to disconnect. Only the turn signal works; when the position light and turn signal are turned on at the same time, the MCU detects that the turn signal and the position light are powered at the same time, and the MCU controls the switch to disconnect. Only the turn signal works. When the turn signal goes out at this time, the MCU continuously detects for 600mS. After there is no turn signal input / only position light input, the MCU switches the switch from the disconnected state to the closed state. At this time, only the position light works.
[0044] However, the circuit design of the above technology is complex, and uses LDO (Low DropOut Voltage Regulator) and MCU kit, resulting in high hardware cost. In addition, the above technology involves MCU software development and testing, and the software development is complex, resulting in high development costs.
[0045] The lighting control circuit, lighting system and vehicle of the embodiment of the utility model are described below with reference to the accompanying drawings. In view of the problems of complex circuit design and high cost mentioned in the above background technology, the utility model provides a lighting control circuit, which solves the problems of complex circuit design and high cost in the related technology, reduces the hardware cost by building a simple pure hardware logic circuit, and does not involve software development, thereby reducing the development cost.
[0046] Specifically, Figure 2 A block diagram of a lighting control circuit 10 provided in an embodiment of the present utility model.
[0047] like Figure 2 As shown, the light control circuit 10 includes: a switch circuit 100, a delay circuit 200, a first light driving circuit 300 and a second light driving circuit 400.
[0048] Among them, the switch circuit 100 is electrically connected to the ground node GND, the delay circuit 200, and the second light driving circuit 400 respectively; the input end of the first light driving circuit 300 is electrically connected to the first power access node TURN, the output end of the first light driving circuit 300 is electrically connected to the first car light L1, and the first light driving circuit 300 is used to light up the first car light L1; the input end of the delay circuit 200 is electrically connected to the input end of the first light driving circuit 300 and the first power access node TURN respectively, and the output end of the delay circuit 200 is electrically connected to the ground node GND and the switch circuit 100 respectively; the input end of the second light driving circuit 400 is electrically connected to the second power access node PL, the output end of the second light driving circuit 400 is electrically connected to the second car light L2, and the second light driving circuit 400 is used to light up the second car light L2.
[0049] In some embodiments, the first light driving circuit 300 is a turn signal driving circuit; the second light driving circuit 400 is a position light driving circuit. The first power access node TURN is connected to the body controller, and controls the turn signal LED on the turn signal light source board through the turn signal driving module. The second power access node PL is connected to the body controller, and controls the position light LED on the position light source board through the position light driving module.
[0050] Specifically, the switch circuit 100 has a plurality of different switch states, and the switch state can be adjusted as needed. The switch state is related to the lighting priority of the first headlight L1 and the second headlight L2, and a lighting sequence of different priorities can be realized. The delay circuit 200 can delay the output signal of the circuit 200 to realize the function of delayed response. The input end of the first light driving circuit 300 is electrically connected to the first power access node TURN, which can ensure the normal power supply of the first light driving circuit 300, and the output end of the first light driving circuit 300 is electrically connected to the first headlight L1, realizing the lighting function of the first headlight L1. The input end of the second light driving circuit 400 is electrically connected to the second power access node PL, which can ensure the normal power supply of the second light driving circuit 400, and the output end of the second light driving circuit 400 is electrically connected to the second headlight L2, realizing the lighting function of the second headlight L2.
[0051] Furthermore, in some embodiments, Figure 2As shown, the switch circuit 100 includes: a first switch K1, a control end of the first switch K1 is electrically connected to the cathode of the diode VD, and a first end of the first switch K1 is electrically connected to the ground node GND; a second switch K2, a control end of the second switch K2 is electrically connected to the second end of the first switch K1, and a first end of the second switch K2 is electrically connected to the ground node GND; a third switch K3, a control end of the third switch K3 is electrically connected to the second end of the second switch K2, a first end of the third switch K3 is electrically connected to the second power access node PL, and a second end of the third switch K3 is electrically connected to the input end of the second light driving circuit 400.
[0052] Specifically, by combined control of the first switch K1, the second switch K2 and the third switch K3, flexible control of the on and off states of different parts in the circuit can be achieved, which facilitates the connection control of the first light driving circuit 300 and the second light driving circuit 400. In addition, this switch control method is simple, the structure is stable, and it is not prone to failure. It can provide reliable circuit connection and switching. At the same time, the switch structure is simple and the cost is low. It is suitable for use in a large number of circuits, which can effectively reduce costs.
[0053] Furthermore, in some embodiments, Figure 2 As shown, the delay circuit 200 includes: a diode VD, an anode of the diode VD is electrically connected to the input end of the first light driving circuit 300 and the first power access node TURN respectively; an energy storage component C1, an input end of the energy storage component C1 is electrically connected to the cathode of the diode VD, and an output end of the energy storage component C1 is electrically connected to the ground node GND and the switch circuit 100 respectively; a first resistor R1, an input end of the first resistor R1 is electrically connected to the input end of the energy storage component C1 and the cathode of the diode VD respectively, and an output end of the first resistor R1 is electrically connected to the ground node GND and the switch circuit 100 respectively.
[0054] Preferably, in some embodiments, the energy storage element C1 is a capacitor, which is used to store charge during the charging and discharging process and maintain a high level at point ③.
[0055] Specifically, the anode of the diode VD is electrically connected to the input end of the first light driving circuit 300 and the first power access node TURN, and can receive a signal from the circuit input to implement signal processing at the input end. The input end of the energy storage component C1 is electrically connected to the cathode of the diode VD, and can store electric energy to implement the function of delayed response. The output end of the energy storage component C1 is electrically connected to the ground node GND and the switch circuit 100, and can release the stored electric energy to implement the output response of the circuit. The input end of the first resistor R1 is electrically connected to the input end of the energy storage component C1 and the cathode of the diode VD, and by adjusting the resistance value of the first resistor R1, the stability and response speed of the circuit can be controlled. The output end of the first resistor R1 is electrically connected to the ground node GND and the switch circuit 100, and the adjusted signal can be transmitted to the ground node GND and the switch circuit 100.
[0056] Optionally, the first resistor R1 plays a role of current limiting in the delay circuit 200, so that the discharge process can last longer than the first preset time and reach the second preset time, wherein the first preset time may be 400ms and the second preset time may be 600ms.
[0057] Furthermore, if Figure 2 As shown, when the first power access node TURN is powered on, the delay circuit 200 is charged, and the charging is completed instantly, at this time ③ is a high level. In addition, when the first power access node TURN stops being powered on, the delay circuit 200 discharges, and when discharging, due to the large resistance of the first resistor R1, the discharge will last for 600ms, and after completion, point ③ becomes a low level.
[0058] Preferably, in some embodiments, Figure 3 As shown, the delay circuit 200 also includes: a second resistor R2, the input end of the second resistor R2 is electrically connected to the input end of the first resistor R1, the input end of the energy storage component C1 and the cathode of the diode VD respectively, and the output end of the second resistor R2 is electrically connected to the switch circuit 100.
[0059] Specifically, the input end of the second resistor R2 is electrically connected to the input end of the first resistor R1, the input end of the energy storage element C1, and the cathode of the diode VD. By adjusting the resistance value of the second resistor R2, the performance of the circuit can be further adjusted. The output end of the second resistor R2 is electrically connected to the switch circuit 100, and the adjusted signal can be transmitted to the switch circuit 100.
[0060] Optionally, in some embodiments, Figure 4As shown, the switch circuit 100 includes: a fourth switch K4, a control end of the fourth switch K4 is electrically connected to the output end of the second resistor R2, and a first end of the fourth switch K4 is electrically connected to the ground node GND; a fifth switch K5, a control end of the fifth switch K5 is electrically connected to the second end of the fourth switch K4, and a first end of the fifth switch K5 is electrically connected to the ground node GND; a sixth switch K6, a control end of the sixth switch K6 is electrically connected to the second end of the fifth switch K5, a first end of the sixth switch K6 is electrically connected to the second power access node PL, and a second end of the sixth switch K6 is electrically connected to the input end of the second light driving circuit 400.
[0061] Specifically, the control end of the fourth switch K4 is connected to the output end of the second resistor R2, and the on-off of the circuit can be controlled by controlling the state of the fourth switch K4, so as to achieve control and regulation of the signal. The control end of the fifth switch K5 is electrically connected to the second end of the fourth switch K4, and the on-off of the circuit can be further controlled by controlling the state of the fifth switch K5. The fourth switch K4 and the fifth switch K5 are grounded, and the circuit can be connected to the ground lead to achieve grounding treatment of the circuit and improve the stability of the circuit. The control end of the sixth switch K6 is electrically connected to the second end of the fifth switch K5, and the on-off of the circuit can be controlled by controlling the state of the sixth switch K6, so as to achieve control and regulation of the signal. The first end of the sixth switch K6 is electrically connected to the second power supply access node PL, so as to achieve power supply access to the circuit. The second end of the sixth switch K6 is electrically connected to the input end of the second light driving circuit 400, and the regulated signal can be transmitted to the second light driving circuit 400.
[0062] Preferably, in some embodiments, Figure 5 As shown, the switch circuit 100 further includes: a third resistor R3, the input end of the third resistor R3 is electrically connected to the second end of the first switch K1 and the control end of the second switch K2, respectively, and the output end of the third resistor R3 is electrically connected to the second power access node PL and the first end of the third switch K3, respectively; a fourth resistor R4, the input end of the fourth resistor R4 is electrically connected to the second end of the second switch K2 and the control end of the third switch K3, respectively, and the output end of the fourth resistor R4 is electrically connected to the second power access node PL, the output end of the third resistor R3, and the first end of the third switch K3, respectively.
[0063] Specifically, the input end of the third resistor R3 is electrically connected to the second end of the first switch K1 and the control end of the second switch K2, and the output end of the fourth resistor R4 is electrically connected to the second power access node PL, the output end of the third resistor R3 and the first end of the third switch K3. By adjusting the resistance values of the third resistor R3 and the fourth resistor R4, the stability and response speed of the circuit can be controlled.
[0064] Furthermore, in some embodiments, the first switch K1, the second switch K2, the fourth switch K4 and the fifth switch K5 are all triodes, and the third switch K3 and the sixth switch K6 are all MOS transistors (Metal-Oxide-Semiconductor Field-Effect Transistor).
[0065] Specifically, the first switch K1, the second switch K2, the fourth switch K4 and the fifth switch K5 are all triodes. Preferably, the first switch K1, the second switch K2, the fourth switch K4 and the fifth switch K5 can be NPN triodes. NPN triodes have good amplification characteristics and can provide a higher current amplification factor, so as to achieve the driving of high-power loads. The control end of the first switch K1 can be the base of the triode, and the switch state can be controlled by controlling the base current to achieve the on-off of the circuit; the first end of the first switch K1 can be the emitter of the triode, and the signal is connected to the emitter, and the load is driven by the triode to achieve signal amplification and driving. The second end of the first switch K1 can be the collector of the triode, and the driven signal is output to the load to achieve signal amplification and transmission.
[0066] Further, the control end of the second switch K2 may be the base of the transistor, the first end of the second switch K2 may be the emitter of the transistor, and the second end of the second switch K2 may be the collector of the transistor.
[0067] Further, the third switch K3 is a MOS transistor, wherein the control end of the third switch K3 may be a gate of the MOS transistor, the first end of the third switch K3 may be a source of the MOS transistor, and the second end of the third switch K3 may be a drain of the MOS transistor. Since the MOS transistor has lower power consumption when working, the third switch K3 can perform its function in a more efficient manner, and since the MOS transistor has a fast switching speed, the third switch K3 can quickly respond to the control signal and realize a fast switching operation.
[0068] It should be noted that the structure of the fourth switch K4 is the same as that of the first switch K1 , the structure of the fifth switch K5 is the same as that of the second switch K2 , and the structure of the sixth switch K6 is the same as that of the third switch K3 , which will not be described in detail here.
[0069] In order to protect the above-mentioned light control circuit 10, the embodiment of the present application can also set a protection resistor and a pull-down resistor at the base of the transistor to improve the stability and reliability of the circuit. In addition, the first switch K1, the second switch K2 and the third switch K3 of the embodiment of the present application can also be built by MOS tubes, and the first switch K1, the second switch K2 and the third switch K3 can also use existing chips, which are not specifically limited here.
[0070] In order to facilitate those skilled in the art to more clearly and intuitively understand the lighting control circuit of the embodiment of the utility model, the following is a Figure 6 Provide detailed explanation.
[0071] like Figure 6 As shown, TURN is the power interface, which is connected to the body controller (BCM (Body Control Module, body control module) / ZCU (ZonalControlUnit, regional controller platform), etc.), and controls the turn signal LED on the turn signal light source board through the turn signal driver module; PL is the power interface, which is connected to the body controller (BCM / ZCU, etc.), and controls the position light LED on the position light light source board through the position light driver module. GND is the body ground wire, which is connected to the body controller.
[0072] Specifically, when only the position light is powered, point ④ is at a high level, point ③ is at a low level, MOS tube K9 is in the cut-off state, point ② is at a high level, transistor K8 is in a saturation state, point ④ is at a high level, point ① is at a low level, transistor K7 is in a saturation state, and the position light works normally at this time.
[0073] Furthermore, when only the turn signal is powered, the position light is not powered, point ② / ④ is at a low level, transistor K8 is in the cut-off state, point ① is at a high level, transistor K7 is in the cut-off state, and the turn signal works normally.
[0074] Furthermore, when the position light and the turn signal light are powered at the same time, point ③ / ④ is at a high level, MOS tube K9 is in the on state, point ② is at a low level, transistor K8 is in the off state, point ① is at a high level, transistor K7 is in the off state, and only the turn signal light works; when the turn signal light is turned off for 400mS, because it takes 600mS for point ③ to turn to a low level, the level state will not change, so when the turn signal light is on / off for 400mS, the position light cannot light up; when the turn signal light is completely turned off, point ③ turns from a high level to a low level after 600mS, MOS tube K9 is in the off state, point ② becomes a high level, transistor K8 is in a saturated state, point ① becomes a low level, transistor K7 is in a saturated state, and the position light works normally at this time.
[0075] Therefore, through transistor K7, transistor K8 and MOS tube K9, combined with the level holding characteristics of the delay circuit, the logic of turning light priority when the turn light and position light are multiplexed is realized, which simplifies the complexity of circuit design and reduces hardware cost and development cost.
[0076] According to the lighting control circuit of the utility model, the switch circuit is electrically connected to the ground node, the delay circuit and the second light driving circuit, the first light driving circuit is electrically connected to the first power access node and the first car light, and is used to light up the first car light; the delay circuit is electrically connected to the first light driving circuit and the ground node, and the output end is electrically connected to the ground node; the second light driving circuit is electrically connected to the second power access node and the second car light, and is used to light up the second car light. Thus, the problems of complex circuit design and high cost in the related technology are solved, and the hardware cost is reduced by building a simple pure hardware logic circuit, and no software development is involved, thereby reducing the development cost.
[0077] An embodiment of the utility model provides a lighting system, including the above-mentioned lighting control circuit.
[0078] According to the lighting system of the embodiment of the utility model, the above-mentioned lighting control circuit solves the problems of complex circuit design and high cost in related technologies. By building a simple pure hardware logic circuit, the hardware cost is reduced and no software development is involved, thereby reducing the development cost.
[0079] An embodiment of the utility model further provides a vehicle, comprising the lighting system of the above embodiment.
[0080] The vehicle according to the embodiment of the utility model solves the problems of complex circuit design and high cost in related technologies through the above-mentioned lighting system. The hardware cost is reduced by building a simple pure hardware logic circuit, and no software development is involved, thereby reducing the development cost.
[0081] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 utility model. In this specification, the schematic representations of the above terms do 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 N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0082] 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 the present utility model, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0083] It should be understood that the various parts of the utility model can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.
[0084] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.
[0085] In addition, each functional unit in each embodiment of the utility model can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.
[0086] The storage medium mentioned above may be a read-only memory, a disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A lighting control circuit, characterized in that: include: A switch circuit, a delay circuit, a first light driving circuit and a second light driving circuit, wherein: The switch circuit is electrically connected to the ground node, the delay circuit, and the second light driving circuit respectively; The input end of the first light driving circuit is electrically connected to the first power access node, the output end of the first light driving circuit is electrically connected to the first vehicle light, and the first light driving circuit is used to light up the first vehicle light; The input end of the delay circuit is electrically connected to the input end of the first light driving circuit and the first power access node respectively, and the output end of the delay circuit is electrically connected to the ground node and the switch circuit respectively; and The input end of the second light driving circuit is electrically connected to the second power access node, the output end of the second light driving circuit is electrically connected to the second vehicle light, and the second light driving circuit is used to light up the second vehicle light.
2. The lighting control circuit according to claim 1, characterized in that: The delay circuit comprises: a diode, wherein an anode of the diode is electrically connected to an input end of the first light driving circuit and the first power supply access node respectively; An energy storage component, wherein an input end of the energy storage component is electrically connected to the cathode of the diode, and an output end of the energy storage component is electrically connected to the ground node and the switch circuit respectively; A first resistor, wherein an input end of the first resistor is electrically connected to an input end of the energy storage component and a cathode of the diode respectively, and an output end of the first resistor is electrically connected to the ground node and the switch circuit respectively.
3. The lighting control circuit according to claim 2, characterized in that: The switch circuit comprises: a first switch, wherein a control terminal of the first switch is electrically connected to a cathode of the diode, and a first terminal of the first switch is electrically connected to the ground node; a second switch, wherein a control end of the second switch is electrically connected to a second end of the first switch, and a first end of the second switch is electrically connected to the ground node; A third switch, wherein the control end of the third switch is electrically connected to the second end of the second switch, the first end of the third switch is electrically connected to the second power access node, and the second end of the third switch is electrically connected to the input end of the second light driving circuit.
4. The lighting control circuit according to claim 3, characterized in that: The delay circuit further includes: A second resistor, wherein an input end of the second resistor is electrically connected to an input end of the first resistor, an input end of the energy storage component and a cathode of the diode respectively, and an output end of the second resistor is electrically connected to the switch circuit.
5. The lighting control circuit according to claim 4, characterized in that: The switch circuit comprises: a fourth switch, wherein a control end of the fourth switch is electrically connected to the output end of the second resistor, and a first end of the fourth switch is electrically connected to the ground node; a fifth switch, wherein a control end of the fifth switch is electrically connected to the second end of the fourth switch, and a first end of the fifth switch is electrically connected to the ground node; A sixth switch, wherein the control end of the sixth switch is electrically connected to the second end of the fifth switch, the first end of the sixth switch is electrically connected to the second power access node, and the second end of the sixth switch is electrically connected to the input end of the second light driving circuit.
6. The lighting control circuit according to any one of claims 3 to 5, characterized in that: The switch circuit further includes: a third resistor, wherein an input end of the third resistor is electrically connected to the second end of the first switch and the control end of the second switch respectively, and an output end of the third resistor is electrically connected to the second power access node and the first end of the third switch respectively; a fourth resistor, wherein an input end of the fourth resistor is electrically connected to the second end of the second switch and the control end of the third switch respectively, and an output end of the fourth resistor is electrically connected to the second power supply access node, the output end of the third resistor and the first end of the third switch respectively.
7. The lighting control circuit according to claim 5, characterized in that: The first switch, the second switch, the fourth switch and the fifth switch are all triodes, and the third switch and the sixth switch are all MOS tubes.
8. The lighting control circuit according to claim 1, characterized in that: The first light driving circuit is a turn signal driving circuit; the second light driving circuit is a position signal driving circuit.
9. A lighting system, characterized in that: include: A lighting control circuit as claimed in any one of claims 1 to 8.
10. A vehicle, characterized in that: include: The lighting system as claimed in claim 9.