CN115107639A - Steering running light control method, system and terminal - Google Patents
Steering running light control method, system and terminal Download PDFInfo
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- CN115107639A CN115107639A CN202210765429.4A CN202210765429A CN115107639A CN 115107639 A CN115107639 A CN 115107639A CN 202210765429 A CN202210765429 A CN 202210765429A CN 115107639 A CN115107639 A CN 115107639A
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- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
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Abstract
The invention discloses a method, a system and a terminal for controlling a steering running light, wherein the method comprises the following steps: detecting the state of a steering control signal in real time and acquiring the duration time of high and low levels of the steering control signal; when the steering control signal is detected to be at a rising edge and is at a high level after a first preset time, the first preset time is used as a time interval to send driving signals to the LED lamp modules in the steering lamp one by one until all the LED lamp modules receive the driving signals, and the running water lighting is realized. And when the steering control signal is at a falling edge and the low level duration time reaches a first preset duration, controlling each LED lamp module to be in an off state. According to the technical scheme, the high and low level time is collected while the state of the steering control signal is detected, and the LED lamp modules in the steering lamp are sequentially driven at equal intervals after the steering control signal is ensured to be an effective signal, so that a reliable and stable running water lighting effect is provided.
Description
Technical Field
The invention relates to the technical field of circuit design, in particular to a steering running water lamp control method, a steering running water lamp control system and a steering running water lamp control terminal.
Background
With the development of automobile science and technology, automobile lamps and lanterns and lamplight have been used as one of media for embodying automobile science and technology bright spots, and the requirements of consumer groups on various functions of the automobile lamps and lanterns do not meet basic requirements any more, but require more choices and user experiences. The automobile steering lamp generally adopts a mode of lightening the steering lamp to dynamically express the turning direction of the automobile so as to improve the warning performance of the automobile steering lamp and facilitate surrounding people to acquire the turning direction of the automobile.
In the prior art, whether the steering lamp is triggered to turn is generally judged by collecting a rising edge and a falling edge signal, so that the condition that the steering lamp is triggered by mistake in the driving process of a driver is ignored; and in some driving situations, abnormal interference signals exist, so that the light-emitting diodes in the turn lights cannot be sequentially lightened. And the flowing water lighting mode needs a plurality of light emitting diodes to realize the flowing water effect, but when any one light emitting diode in the steering lamp is damaged, the instantaneous high voltage in the circuit is easy to break down the rest light emitting diodes, so that the whole steering lamp is in failure.
Disclosure of Invention
The application provides a steering running water lamp control method, a steering running water lamp control system and a steering running water lamp control terminal, wherein high and low level time is collected while the state of a steering control signal is detected, and LED lamp modules in a steering lamp are sequentially driven according to preset time length on the premise that the steering control signal is ensured to be an effective signal, so that a reliable and stable running water lamp lighting effect is provided.
In a first aspect, the present application provides a method for controlling a turn-around water lamp, including:
detecting the state of a steering control signal in real time and acquiring the duration time of high and low levels of the steering control signal;
when the steering control signal is detected to be at a rising edge and is at a high level after a first preset time, the driving signals are sent to the LED lamp modules in the steering lamp one by taking the first preset time as a time interval until all the LED lamp modules receive the driving signals, and the running water lighting is realized; the steering lamp is internally provided with at least two LED lamp modules with the same structure;
and when the steering control signal is at a falling edge and the low level duration reaches the first preset duration, controlling each LED lamp module to be in an off state.
Different from the state that only the rising edge and the falling edge of a steering signal are collected in the prior art, the steering running water lamp control method provided by the application detects the state of the steering control signal in real time and collects the high and low level time of the control signal so as to eliminate the interference of a false triggering signal. Further, when the steering control signal is detected to be at a rising edge and is still at a high level after a first preset time, the steering control signal can be judged to be an effective signal, and one LED lamp module is sequentially driven at intervals of a uniform preset time, so that the reliable running water lighting effect of sequentially lighting at equal intervals is achieved. In the flowing water lamp lighting method, after the steering control signal is determined to be the effective signal, the LED lamp modules in the steering lamp are sequentially lighted for the preset time length, the influence of high-level duty ratio change of the steering control signal is avoided, and even if the high-level duty ratio in the steering control signal changes, the reliable flowing water lighting effect of the sequential equal-interval time length can be still kept by the flowing water lamp control method provided by the application, and the problem that the flowing water lighting rate is inconsistent due to the change of the duty ratio is avoided.
In one implementation manner, the sending the driving signal to the LED lamp modules in the turn signal one by one with the first preset time as the time interval further includes:
and after each LED lamp module is driven, carrying out fault detection on the output end of the driven LED lamp module.
In one implementation manner, after each driving of one LED lamp module, performing fault detection on an output end of the driven LED lamp module specifically includes:
when detecting that the output end of the LED lamp module which is driven has a fault, outputting a low level to the LED lamp module which has the fault so as to cut off the output of the LED lamp module which has the fault;
switching on the rest LED lamp modules in the steering lamp one by one according to the first preset time length while switching off the LED lamp modules with faults until all the LED lamp modules are switched on;
after the steering control signal of the next signal period is received, sequentially driving the rest LED lamp modules in the steering lamp according to the first preset duration after the preset multiple is compressed so as to realize the running water lighting of the preset multiple.
Therefore, the output end of the LED lamp driving module is detected when one LED lamp driving module is driven, and the steering running water lamp can be ensured to be in a normal working state. When the LED lamp module is detected to have a fault, firstly, the output of the LED lamp module is protected in a first step, and meanwhile, after the next steering control signal is received, the first preset duration after the preset multiple is compressed is taken as a period, all the other LED lamp modules in the steering lamp are sequentially driven to achieve the running water lighting of the preset multiple, and the running water lighting is performed quickly to remind a user that the steering lamp has the fault.
In a second aspect, an embodiment of the present invention further provides a control system for a steering running water lamp,
the method comprises the following steps: turn signal switch, automobile body controller and turn signal lamp specifically are:
the turn light switch is used for sending a corresponding turn signal to the automobile body controller according to the turn operation of a user;
the vehicle body controller sends a steering control signal with a preset signal period to the steering lamp after receiving the steering signal; the steering lamp is internally provided with at least two LED lamp modules with the same structure and a control module for controlling the LED lamp modules, each LED lamp module in the steering lamp is connected with the control module, and the LED lamp modules are not connected with each other;
the control module is used for controlling each LED lamp module in the steering lamp according to the steering flowing water lamp control method.
Like this, set up a plurality of LED lamp modules that the structure is the same in order to realize the indicator effect in the indicator, each LED lamp module is not connected each other, can avoid when certain LED lamp module damages the abrupt voltage that increases punctures all the other LED lamp modules to lead to whole indicator to produce the trouble. The control module is arranged in the steering lamp to control each LED lamp module in the steering lamp according to the steering running water lamp control method, and the interference of the error triggering signal can be eliminated by detecting the state of the steering control signal in real time and collecting the high and low level time of the steering control signal. Furthermore, after the transition control signal is judged to be an effective signal, one LED lamp module is sequentially driven every first preset time so as to achieve the reliable running water lighting effect of sequentially lighting at equal intervals. The application provides a turn to flowing water lamp control system, not only can overcome the drawback that the remaining LED lamp module is punctureed easily to the instantaneous high pressure that produces when each arbitrary LED lamp module damages in the indicator, can also provide the reliable flowing water effect of lighting a lamp in proper order when equidistant time length lights up.
In one implementation manner, after the control module outputs a low level to the failed LED lamp module to cut off the output of the failed LED lamp module, the method further includes feeding back a fault signal to the vehicle body controller, specifically:
and the vehicle body controller feeds back state confirmation information to the control module after receiving the fault signal and sends the steering control signal of which the signal period is compressed by a preset multiple to the steering lamp.
In one implementation, the control module comprises a single chip microcomputer and a power supply module; the power supply module is used for providing a power supply for the single chip microcomputer.
In one implementation, the LED lamp module includes a first zener diode, a second zener diode, a first light emitting diode, a second light emitting diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, and a first MOS transistor, and specifically includes:
the anode of the first voltage stabilizing diode is connected with the cathode of the first light-emitting diode and the anode of the second light-emitting diode;
the cathode of the first voltage stabilizing diode is connected with the anode of the first light emitting diode;
the cathode of the second voltage stabilizing diode is connected with the anode of the second light-emitting diode;
the anode of the second voltage stabilizing diode is connected with the cathode of the second light emitting diode, the first end of the first resistor and the first end of the second resistor;
the second end of the first resistor is connected with the control module;
the second end of the second resistor is connected with the drain electrode of the first MOS tube;
the grid electrode of the first MOS tube is connected with the first end of the third resistor, the first end of the first capacitor and the first end of the fourth resistor;
the source electrode of the first MOS tube, the second end of the fourth resistor and the second end of the first capacitor are grounded;
and the second end of the third resistor is connected with the control module.
In one implementation, the first resistor and the third resistor are current limiting resistors;
the second resistor is a divider resistor;
the first capacitor is a filter capacitor.
In a third aspect, the present application further provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, where the processor implements the steering water lamp control method as described above when executing the computer program.
In a fourth aspect, the present application further provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program runs, the apparatus on which the computer-readable storage medium is located is controlled to execute the steering water lamp control method as described above.
Drawings
Fig. 1 is a schematic flow chart of a steering running light control method according to an embodiment of the present invention;
fig. 2 is a structural diagram of a PWM rectangular wave signal according to an embodiment of the present invention;
fig. 3 is a block diagram of a steering running water lamp control system according to an embodiment of the present invention;
fig. 4 is a schematic connection diagram of an LED lamp module according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The terms "first" and "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
First, some terms in the present application are explained so as to be easily understood by those skilled in the art.
(1) Duty ratio: refers to the proportion of the time of energization relative to the total time within a pulse cycle.
(2) And (3) period: the time taken by the waveform to repeat itself from start to finish is typically in seconds. This value is also the period time T of the sine wave or the pulse width of the square wave.
Example 1
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for controlling a turn-to-run-light according to an embodiment of the present invention. The embodiment of the invention provides a steering running light control method, which comprises the following steps of 101 to 103:
step 101: detecting the state of a steering control signal in real time and acquiring the duration time of high and low levels of the steering control signal;
step 102: when the steering control signal is detected to be at a rising edge and is at a high level after a first preset time, the driving signals are sent to the LED lamp modules in the steering lamp one by taking the first preset time as a time interval until all the LED lamp modules receive the driving signals, and the running water lighting is realized; the steering lamp is internally provided with at least two LED lamp modules with the same structure;
step 103: and when the steering control signal is at a falling edge and the low level duration reaches the first preset duration, controlling each LED lamp module to be in an off state.
The steering control signal may be a sine wave signal, a square wave signal, a rectangular wave signal, a triangular wave signal, a sawtooth wave signal, and the like. In the embodiment of the present invention, a rectangular wave signal is used as a steering control signal to detect a state of the rectangular wave signal in real time, referring to fig. 2, and fig. 2 is a structural diagram of a PWM rectangular wave signal provided in the embodiment of the present invention. T3 is the time interval from the nth to the (n + 1) th LED lamp modules in the turn signal lamp to be turned on, and n is a positive integer greater than or equal to 1. When the rectangular wave signal is detected to be at the rising edge, the high-low level time of the rectangular wave signal is continuously collected, and if the rectangular wave signal is at the high level after the first preset time t3, the high level is sent to the first LED lamp module in the steering lamp to light the LED lamp module. Then, with the first preset time period t3 as a period for turning on the LED lamp modules, high levels are sequentially sent to the LED lamp modules in the turn signal every other first preset time period t3 until all the LED lamp modules in the turn signal receive the high levels. In order to achieve the flowing water lighting effect, at least two LED lamp modules with the same structure are arranged in the steering lamp. In the embodiment of the invention, 8 LED lamp modules are arranged in the turn signal lamp, that is, in the embodiment of the invention, the LED lamp modules in the turn signal lamp need to receive the high level all over 8 first preset time periods t 3. Wherein T2 is the time sum of all the LED lamp modules being turned on, T1 is the time sum of the high level in one period of the rectangular wave signal, and T is one period of the rectangular wave signal. After all the LED lamp modules in the turn signal are completely lightened, the LED lamp modules are kept in the lightening state in the rest time within the high level time t1 of the rectangular wave signal until the rectangular wave signal is detected to be at the falling edge, and after the low level time lasts for a first preset time period t3, the low level is output to all the LED lamp modules to control each LED lamp module to be in the extinguishing state.
In the embodiment of the invention, after each LED lamp module is driven, the fault detection is carried out on the output end of the driven LED lamp module. Specifically, after the LED lamp module receives the high-level driving signal, the output end of the LED lamp module correspondingly outputs the high level, and the output level of the LED module is detected, so as to achieve the purpose of fault detection. When the output end of the driven LED lamp module is detected to be at a low level, the LED lamp module is judged to have a fault and cannot be normally conducted. And outputting a low level to the LED lamp module with the fault to cut off the output of the LED lamp module. And continuing to turn on the rest of the LED lamp modules according to the first preset time period t3 until all the turn lamps are turned on. Meanwhile, when a rectangular wave signal of the next period is received, the time interval of the lightening between the two adjacent LED lamp modules is adjusted, and the time interval is compressed by the preset multiple. Preferably, in the embodiment of the invention, the first preset time period, that is, the time interval t3 between two adjacent LED lamp modules being turned on, is adjusted to be half of the original time period, and every other time period is adjusted to be half of the original time period
The time interval of (a) lighting one LED lamp module. Correspondingly, the running water lighting speed of the steering lamp is doubled, and the user is reminded of the fault of the steering lamp through the quick running water lighting.
In an embodiment of the present invention, a terminal device is further provided, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and when the processor executes the computer program, the method for controlling a turn-to-water lamp is implemented.
In an embodiment of the present invention, a computer-readable storage medium is further provided, where the computer-readable storage medium includes a stored computer program, and when the computer program runs, the apparatus where the computer-readable storage medium is located is controlled to execute the above-mentioned method for controlling a turn-signal lamp. Illustratively, the computer program may be partitioned into one or more modules that are stored in the memory and executed by the processor to implement the invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program in the terminal device.
The terminal device can be a desktop computer, a notebook, a palm computer, a cloud server and other computing devices. The scanning device based data collection device may include, but is not limited to, a processor, memory, and a display. It will be appreciated by those skilled in the art that the above components are merely examples of terminal devices and do not constitute a limitation to terminal devices, and may include more or fewer components than those described, or some components may be combined, or different components, for example, the scanning device based data collection device may further include input output devices, network access devices, buses, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the scanning device based data collection device, various interfaces and lines connecting the various parts of the entire scanning device based data collection device.
The memory may be used for storing the computer programs and/or modules, and the processor may implement various functions of the terminal device by executing or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, a text conversion function, etc.), and the like; the storage data area may store data (such as audio data, text message data, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein, the module integrated with the terminal device can be stored in a computer readable storage medium if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice. One of ordinary skill in the art can understand and implement it without inventive effort.
The embodiment of the invention provides a steering running light control method, which is different from the prior art that only the rising edge state and the falling edge state of a steering signal are collected, and the embodiment of the invention detects the state of the steering control signal in real time and collects the high and low level time of the control signal so as to eliminate the interference of a false triggering signal. When the steering control signal is detected to be at the rising edge and still be at the high level after the first preset time length, the steering control signal can be judged to be an effective signal, and one LED lamp module is sequentially driven at intervals of a uniform preset time length, so that the reliable running water lighting effect of sequentially lighting at equal interval time lengths is achieved. In the flowing water lamp lighting method, after the steering control signal is determined to be the effective signal, the LED lamp modules in the steering lamp are sequentially lighted for the preset time length, the influence of high-level duty ratio change of the steering control signal is avoided, and even if the high-level duty ratio in the steering control signal changes, the reliable flowing water lighting effect of the sequential equal-interval time length can be still kept by the flowing water lamp control method provided by the application, and the problem that the flowing water lighting rate is inconsistent due to the change of the duty ratio is avoided. Furthermore, the output end of the LED lamp module is detected while driving one LED lamp module to ensure that the steering running light is in a normal working state, when the LED lamp module is detected to have a fault, the output of the LED lamp module is firstly protected for the first step, meanwhile, after receiving a steering control signal of the next period, the preset time after compressing the preset multiple is taken as a period, the rest LED lamp modules in the steering light are sequentially driven to realize the running light lighting of the preset multiple, and the quick running light lighting is used for reminding a user that the steering light has a fault.
Example 2
Referring to fig. 3, fig. 3 is a block diagram of a steering running water lamp control system according to an embodiment of the present invention. The embodiment of the invention provides a steering running water lamp control system, which comprises: turn signal switch 301, automobile body controller 302 and turn signal 303 specifically are:
the turn light switch 301 is used for sending a corresponding turn signal to the vehicle body controller according to the turning operation of the user;
after receiving the steering signal, the vehicle body controller 302 sends a steering control signal with a preset signal period to the steering lamp; the steering lamp is internally provided with at least two LED lamp modules with the same structure and a control module for controlling the LED lamp modules, each LED lamp module in the steering lamp is connected with the control module, and the LED lamp modules are not connected with each other;
the control module is used for controlling each LED lamp module in the steering lamp according to the steering running water lamp control method in the embodiment 1.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, for a specific working process of the control module, reference may be made to a corresponding process in the foregoing method embodiment, which is not described herein again.
In the embodiment of the present invention, when detecting that there is a fault at the output end of the driven LED lamp module, the control module outputs a low level to the LED lamp module with the fault to cut off the output of the LED lamp module with the fault, and then feeds back a fault signal to the vehicle body controller 302, specifically:
after receiving the fault signal, the body controller 302 feeds back a status confirmation message to the control module 103, which indicates to confirm that the LED lamp module is in an abnormal status. And sends a steering control signal with a signal period compressed by a preset multiple to the steering lamp. Specifically, the signal period of the steering control signal is adjusted according to the compression factor of the time interval t3 between the lighting of two adjacent LED lamp modules of the control module. In the embodiment of the invention, when the control module detects that any one of the LED lamp modules has a fault, a fault signal is sent to the automobile body controller 302, the automobile body controller feeds back state confirmation information after receiving the fault signal and adjusts the period of the steering control signal to be half of the original period by matching with the time interval for lighting two adjacent LED lamp modules adjusted by the control module, so as to realize a more obvious multiple stream lighting effect.
Preferably, the control module comprises a single chip microcomputer and a power supply module. Wherein, power module is +5V power module for provide the power for the singlechip. The steering running light system provided by the embodiment of the invention further comprises a power supply module which is used for supplying power to the steering light, in particular to supplying power to each LED light module in the steering light.
Referring to fig. 4, fig. 4 is a schematic connection relationship diagram of an LED lamp module according to an embodiment of the present invention. Since the LED lamp modules in the turn signal lamp are the same, only the connection relationship of one LED lamp module is described in the embodiment of the present invention. The LED lamp module provided in the embodiment of the present invention includes a first zener diode V1, a second zener diode V2, a first light emitting diode LED1, a second light emitting diode LED2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, and a first MOS transistor M1, specifically:
the anode of the first voltage stabilizing diode V1 is connected with the cathode of the first light emitting diode LED1 and the anode of V2 of the second light emitting diode; the cathode of the first voltage regulator diode V1 is connected with the anode of the first light emitting diode LED 1; the cathode of the second voltage-stabilizing diode V2 is connected with the anode of the second light-emitting diode LED 2; the anode of the second voltage regulator diode V2 is connected with the cathode of the second light emitting diode LED2, the first end of the first resistor R1 and the first end of the second resistor R2; the second end of the first resistor R1 is connected with the control module; a second end of the second resistor R2 is connected with the drain electrode of the first MOS transistor M1; the gate of the first MOS transistor M1 is connected to the first end of the third resistor R3, the first end of the first capacitor C1 and the first end of the fourth resistor R4; the source of the first MOS transistor M1, the second end of the fourth resistor R4 and the second end of the first capacitor C1 are grounded; a second terminal of the third resistor R3 is connected to the control module.
In the embodiment of the invention, the control module sends the driving signal to the LED lamp module through the end 1 connected with the third resistor R3, and performs fault detection on the output level of the LED lamp module through the end 2 connected with the first resistor R1. The first zener diode V1 and the second zener diode V2 can prevent the first light emitting diode LED1 and the second light emitting diode LED2 from being broken down and burned out by a transient high voltage pulse in the power module. When there is high voltage pulse in the circuit, the first voltage regulator diode V1 and the second voltage regulator diode V2 can be instantly conducted, so as to prevent the light emitting diode from being burned out due to high voltage. The first resistor R1 and the third resistor R3 play a role in limiting current, and the second resistor R2 plays a role in dividing voltage, so that the voltage flowing into the first light-emitting diode LED1 and the second light-emitting diode LED2 is prevented from being too large. The fourth resistor R4 is connected between the gate and the source of the first MOS transistor M1, so as to prevent the generation of a bias voltage between the gate and the source of the first MOS transistor, and to prevent static electricity leakage.
The embodiment of the invention provides a steering running water lamp control system, wherein a plurality of LED lamp modules with the same structure are arranged in a steering lamp to realize the effect of the steering lamp, and the LED lamp modules are not connected with each other, so that the problem that when one LED lamp module is damaged, the suddenly increased voltage breaks down the rest of the LED lamp modules, and the whole steering lamp breaks down can be avoided. The control module is arranged in the steering lamp to control each LED lamp module in the steering lamp according to the steering running water lamp control method, and the interference of the error triggering signal can be eliminated by detecting the state of the steering control signal in real time and collecting the high and low level time of the steering control signal. Furthermore, after the transition control signal is judged to be an effective signal, one LED lamp module is sequentially driven every other first preset time period, so that the reliable running water lighting effect of sequentially lighting at equal time periods is achieved. The steering running water lamp control system provided by the embodiment of the invention can overcome the defect that instantaneous high voltage generated when any LED lamp module in the steering lamp is damaged is easy to break down other LED lamp modules, and can provide a reliable running water lighting effect of sequentially lighting at equal intervals for a long time.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method for controlling a turn-around water lamp, comprising:
detecting the state of a steering control signal in real time and collecting the duration time of high and low levels of the steering control signal;
when the steering control signal is detected to be at a rising edge and is at a high level after a first preset time, the driving signals are sent to the LED lamp modules in the steering lamp one by taking the first preset time as a time interval until all the LED lamp modules receive the driving signals, and the running water lighting is realized; the steering lamp is internally provided with at least two LED lamp modules with the same structure;
and when the steering control signal is at a falling edge and the low level duration reaches the first preset duration, controlling each LED lamp module to be in an off state.
2. The method according to claim 1, wherein said sending driving signals one by one to LED light modules in a turn signal at intervals of said first preset duration, further comprises:
and after each LED lamp module is driven, carrying out fault detection on the output end of the driven LED lamp module.
3. The method according to claim 2, wherein after each LED lamp module is driven, performing fault detection on an output end of the driven LED lamp module specifically comprises:
when detecting that the output end of the LED lamp module which is driven has a fault, outputting a low level to the LED lamp module which has the fault so as to cut off the output of the LED lamp module which has the fault;
switching on the rest LED lamp modules in the steering lamp one by one according to the first preset time length while switching off the LED lamp modules with faults until all the LED lamp modules are switched on;
after the steering control signal of the next signal period is received, sequentially driving the rest LED lamp modules in the steering lamp according to the first preset duration after the preset multiple is compressed so as to realize the running water lighting of the preset multiple.
4. A steering water lamp control system, comprising: turn signal switch, automobile body controller and turn signal specifically are:
the turn light switch is used for sending a corresponding turn signal to the automobile body controller according to the turn operation of a user;
the vehicle body controller sends a steering control signal with a preset signal period to the steering lamp after receiving the steering signal; the steering lamp is internally provided with at least two LED lamp modules with the same structure and a control module for controlling the LED lamp modules, each LED lamp module in the steering lamp is connected with the control module, and the LED lamp modules are not connected with each other;
the control module is used for controlling each LED lamp module in the steering lamp according to the steering running light control method of any one of claims 1 to 3.
5. The steering water-flow lamp control system according to claim 4, wherein after the control module outputs a low level to the failed LED lamp module to cut off the output of the failed LED lamp module, the control module further feeds back a failure signal to the vehicle body controller, specifically:
and the vehicle body controller feeds back state confirmation information to the control module after receiving the fault signal and sends the steering control signal of which the signal period is compressed by a preset multiple to the steering lamp.
6. The control system for a turning water lamp according to claim 4, wherein the control system for a turning water lamp further comprises a power supply module; the power module is used for providing power for the steering lamp.
7. The control system for a turning water-flow lamp according to claim 4, wherein the control module comprises a single chip microcomputer and a power supply module; the power supply module is used for providing a power supply for the single chip microcomputer.
8. The steering flow lamp control system according to claim 4, wherein the LED lamp module includes a first zener diode, a second zener diode, a first LED, a second LED, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, and a first MOS transistor, and specifically includes:
the anode of the first voltage stabilizing diode is connected with the cathode of the first light emitting diode and the anode of the second light emitting diode;
the cathode of the first voltage stabilizing diode is connected with the anode of the first light emitting diode;
the cathode of the second voltage stabilizing diode is connected with the anode of the second light emitting diode;
the anode of the second voltage stabilizing diode is connected with the cathode of the second light emitting diode, the first end of the first resistor and the first end of the second resistor;
the second end of the first resistor is connected with the control module;
the second end of the second resistor is connected with the drain electrode of the first MOS tube;
the grid electrode of the first MOS tube is connected with the first end of the third resistor, the first end of the first capacitor and the first end of the fourth resistor;
the source electrode of the first MOS tube, the second end of the fourth resistor and the second end of the first capacitor are grounded;
and the second end of the third resistor is connected with the control module.
9. A steering running water light control system according to claim 8, wherein:
the first resistor and the third resistor are current-limiting resistors;
the second resistor is a divider resistor;
the first capacitor is a filter capacitor.
10. A terminal device comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the turn-to-stream light control method according to any one of claims 1-3 when executing the computer program.
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| CN202210765429.4A CN115107639B (en) | 2022-07-01 | 2022-07-01 | Steering running water lamp control method, system and terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210765429.4A CN115107639B (en) | 2022-07-01 | 2022-07-01 | Steering running water lamp control method, system and terminal |
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| CN115107639B CN115107639B (en) | 2024-07-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1178682A (en) * | 1997-09-17 | 1999-03-23 | Mitsubishi Motors Corp | Multiplex communication type turn signal control device |
| CN110798935A (en) * | 2019-11-19 | 2020-02-14 | 深圳欧创芯半导体有限公司 | LED lamp string control method, device and system and terminal equipment |
| CN112124225A (en) * | 2020-08-31 | 2020-12-25 | 广汽蔚来新能源汽车科技有限公司 | Fault diagnosis system and method for running water steering lamp, vehicle body controller and vehicle |
| CN112248934A (en) * | 2020-09-29 | 2021-01-22 | 蔚来汽车科技(安徽)有限公司 | State detection method and device for vehicle light prompt control device and vehicle |
| CN113291231A (en) * | 2021-05-08 | 2021-08-24 | 东风柳州汽车有限公司 | Running water lamp control system |
-
2022
- 2022-07-01 CN CN202210765429.4A patent/CN115107639B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1178682A (en) * | 1997-09-17 | 1999-03-23 | Mitsubishi Motors Corp | Multiplex communication type turn signal control device |
| CN110798935A (en) * | 2019-11-19 | 2020-02-14 | 深圳欧创芯半导体有限公司 | LED lamp string control method, device and system and terminal equipment |
| CN112124225A (en) * | 2020-08-31 | 2020-12-25 | 广汽蔚来新能源汽车科技有限公司 | Fault diagnosis system and method for running water steering lamp, vehicle body controller and vehicle |
| CN112248934A (en) * | 2020-09-29 | 2021-01-22 | 蔚来汽车科技(安徽)有限公司 | State detection method and device for vehicle light prompt control device and vehicle |
| CN113291231A (en) * | 2021-05-08 | 2021-08-24 | 东风柳州汽车有限公司 | Running water lamp control system |
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| CN115107639B (en) | 2024-07-09 |
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