CN114286471A - Automobile rhythm light control system and control method - Google Patents
Automobile rhythm light control system and control method Download PDFInfo
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- CN114286471A CN114286471A CN202111554877.1A CN202111554877A CN114286471A CN 114286471 A CN114286471 A CN 114286471A CN 202111554877 A CN202111554877 A CN 202111554877A CN 114286471 A CN114286471 A CN 114286471A
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention discloses an automobile rhythm light control system and a control method, wherein a vehicle body controller is connected with a lamp controller by using a hard wire, n PWM waves are used as rhythm light mode trigger signals, and rhythm light modes are distinguished through different duty ratios of the PWM waves, so that multi-mode rhythm light selectable by a user is realized, the user experience is improved, the hardware cost is not increased, too many vehicle body controller ports are not occupied, interruption can be quickly responded in the rhythm light process, and the normal use of a vehicle is not influenced.
Description
Technical Field
The invention belongs to the field of automobile electrical appliance systems, and particularly relates to an automobile rhythm light control system and an automobile rhythm light control method.
Background
To achieve the effect of meeting/sending a rhythm light in an open/close scene of a vehicle, or a more complex musical rhythm light show, there are generally two ways to achieve: first, with a hard-wired connection, this approach is less costly, the number of modes that can be triggered is related to the number of hard-wired connections, and there is the disadvantage of excessive occupancy of the vehicle body controller ports. Second, multiple mode triggering can be achieved through bus communication, but the cost is high. At present, in order to improve user experience, multiple rhythm light modes need to be added, and in addition, practical factors such as limited development cost, insufficient ports of a vehicle body controller and the like exist.
Disclosure of Invention
The invention aims to provide an automobile rhythm light control system and an automobile rhythm light control method, so that rhythm light is realized and user experience is improved on the premise of not increasing cost.
The invention relates to an automobile rhythm light control system which comprises an unlocking/locking signal transmitting module, an unlocking/locking signal receiving module, a vehicle-mounted entertainment terminal, a loudspeaker, a vehicle body controller and a lamp controller, wherein the unlocking/locking signal transmitting module is in wireless communication with the unlocking/locking signal receiving module, the loudspeaker is connected with the vehicle-mounted entertainment terminal through a hard wire, the unlocking/locking signal receiving module, the vehicle-mounted entertainment terminal and the vehicle body controller are connected through a CAN (controller area network) bus, the lamp controller is connected with an LED (light-emitting diode) lamp through a hard wire, and the vehicle body controller is connected with the lamp controller through a hard wire.
The invention relates to a car rhythm light control method, which adopts the car rhythm light control system and comprises the following steps:
when the vehicle body controller receives the unlocking/locking signal sent by the unlocking/locking signal receiving module and the engine is not started, according to a rhythm lighting mode of meeting/sending a guest selected by a user and sent by the vehicle-mounted entertainment terminal, n PWM waves with duty ratios corresponding to the rhythm lighting mode of meeting/sending the guest are generated, and the n PWM waves are output to the lamp controller; after receiving the maintaining time of the rhythm lighting mode of meeting/sending the guest fed back by the lamp controller, the vehicle body controller continuously outputs a PWM wave (namely, high level) with a duty ratio of 100% to the lamp controller until the maintaining time of the rhythm lighting mode of meeting/sending the guest reaches or a signal of needing to turn off the rhythm lighting is received, and outputs a PWM wave (namely, low level) with a duty ratio of 0% for a preset time to the lamp controller.
The vehicle body controller generates n PWM waves with duty ratios corresponding to the music rhythm light mode when receiving the music rhythm light mode selected by the user and sent by the vehicle-mounted entertainment terminal and the engine is not started, and outputs the n PWM waves to the lamp controller; after receiving the maintaining time of the music rhythm light mode fed back by the lamp controller, the vehicle body controller sends a music request corresponding to playing (corresponding to the music rhythm light mode) to the vehicle-mounted entertainment terminal, and continuously outputs PWM waves with the duty ratio of 100% to the lamp controller until the maintaining time of the music rhythm light mode reaches or a signal of needing to turn off the rhythm light is received, and outputs PWM waves with the duty ratio of 0% of preset time to the lamp controller.
After judging that the triggering condition is met, the lamp controller determines the maintaining time of the rhythm light mode corresponding to the n PWM waves and feeds the maintaining time back to the vehicle body controller; when the lamp controller receives a PWM wave with a duty ratio of 100%, calling a rhythm light mode control program (such as a welcome/meeting rhythm light mode control program and a music rhythm light mode control program) corresponding to the n PWM waves to control the LED lamp to realize corresponding rhythm light; and after receiving the PWM wave with the duty ratio of 0% in the preset time, the lamp controller controls the LED lamp to turn off the rhythm light.
Preferably, if the lamp controller receives N PWM waves, the frequency of the N PWM waves is within the preset frequency threshold range, the duty ratio of the N PWM waves is one element in the preset duty ratio set a, and N ismin≤n≤NmaxThen it means that the trigger condition is satisfied. The preset duty ratio set A consists of m duty ratios stored in the lamp controller, the m duty ratios correspond to m-x greeting/delivery rhythm light modes and x music rhythm light modes one by one, and N is oneminFor a predetermined minimum number of PWM waves, NmaxIs the preset maximum number of PWM waves. By increasing the trigger condition judgment, relevant threshold parameters and control logic are optimized, and the problems of ineffective triggering and false triggering caused by the easy interference of PWM waves are avoided.
Preferably, said N ismin=3, said NmaxT + f + a + b; wherein T is the acceptable response time obtained by the calibration mode, f is the frequency of the PWM wave output by the preset vehicle body controller, a is the number threshold value of the time sequence difference between the vehicle body controller and the lamp controller obtained by the calibration mode, and b is the time sequence difference between the vehicle body controller and the lamp controller obtained by the calibration modeAnd the number threshold value related to the PWM wave duty ratio fluctuation output by the vehicle body controller is obtained.
Preferably, there are three rhythm light modes of greeting/sending a guest, which are: a first greeting/sending a guest rhythm light mode, a second greeting/sending a guest rhythm light mode and a third greeting/sending a guest rhythm light mode. There are four music rhythm light patterns, which are: music rhythm light mode one, music rhythm light mode two, music rhythm light mode three, music rhythm light mode four. The duty ratio of n PWM waves corresponding to the first greeting/sending rhythm light mode is 20% +/-3%, the duty ratio of n PWM waves corresponding to the second greeting/sending rhythm light mode is 30% +/-3%, the duty ratio of n PWM waves corresponding to the third greeting/sending rhythm light mode is 40% +/-3%, the duty ratio of n PWM waves corresponding to the first music rhythm light mode is 50% +/-3%, the duty ratio of n PWM waves corresponding to the second music rhythm light mode is 60% +/-3%, the duty ratio of n PWM waves corresponding to the third music rhythm light mode is 70% +/-3%, and the duty ratio of n PWM waves corresponding to the fourth music rhythm light mode is 80% +/-3%. And 7 rhythm light modes are designed for the user to select, so that the user experience is further improved.
The invention has the following effects:
(1) the vehicle body controller is connected with the lamp controller through a hard wire, n PWM waves are used as rhythm light mode trigger signals, rhythm light modes are distinguished through different duty ratios of the PWM waves, multi-mode rhythm light selectable by a user is achieved, user experience is improved, hardware cost is not increased, and too many vehicle body controller ports are not occupied.
(2) The duration of the rhythm light is controlled by continuously outputting a high level (namely a PWM wave with a duty ratio of 100%) to the lamp controller through the vehicle body controller, and the rhythm light is turned off by outputting a low level (namely a PWM wave with a duty ratio of 0%) for a preset time to the lamp controller through the vehicle body controller, so that interruption can be quickly responded in the process of the rhythm light, and the normal use of a vehicle is not influenced.
Drawings
Fig. 1 is a schematic block diagram of a car rhythm light control system in this embodiment.
Fig. 2 is a control flowchart of the vehicle body controller in the present embodiment.
Fig. 3 is a control flowchart of the lamp controller in the present embodiment.
Fig. 4 is a table showing duty ratios of n PWM waves corresponding to three greeting/sending rhythm light patterns and four musical rhythm light patterns in the present embodiment.
Detailed Description
As shown in fig. 1, the car rhythm light control system in this embodiment includes an unlocking/locking signal transmitting module 1, an unlocking/locking signal receiving module 2, a car entertainment terminal 3, a speaker 4, a car body controller 5, and a lamp controller 6, where the unlocking/locking signal transmitting module 1 and the unlocking/locking signal receiving module 2 perform wireless communication, the speaker 4 is connected to the car entertainment terminal 3 through a hard wire, the unlocking/locking signal receiving module 2, the car entertainment terminal 3, and the car body controller 5 are connected through a CAN bus, the car body controller 5 is connected to the lamp controller 6 through a hard wire (considering that a PWM signal is susceptible to interference, the hard wire is a shielded wire), and the lamp controller 6 is connected to an LED lamp 7 through a hard wire. When a user presses the remote control key, the unlocking/locking signal transmitting module 1 sends an unlocking/locking signal to the unlocking/locking signal receiving module 2, and the unlocking/locking signal receiving module 2 sends the unlocking/locking signal to the automobile body controller 5 through the CAN bus.
As shown in fig. 4, three greeting/delivery rhythm light patterns and four musical rhythm light patterns are stored in the in-vehicle entertainment terminal 3. The three rhythm light modes of meeting/sending a guest are respectively as follows: a first greeting/sending a guest rhythm light mode, a second greeting/sending a guest rhythm light mode and a third greeting/sending a guest rhythm light mode. The four musical rhythm light patterns are respectively: music rhythm light mode one, music rhythm light mode two, music rhythm light mode three, music rhythm light mode four. The body controller 5 can generate and output PWM waves having duty ratios corresponding to three greeting/delivery rhythm light patterns and four musical rhythm light patterns to the lamp controller 6. The duty ratio of n PWM waves corresponding to the first greeting/sending rhythm light mode is 20% +/-3%, the duty ratio of n PWM waves corresponding to the second greeting/sending rhythm light mode is 30% +/-3%, the duty ratio of n PWM waves corresponding to the third greeting/sending rhythm light mode is 40% +/-3%, the duty ratio of n PWM waves corresponding to the first music rhythm light mode is 50% +/-3%, the duty ratio of n PWM waves corresponding to the second music rhythm light mode is 60% +/-3%, the duty ratio of n PWM waves corresponding to the third music rhythm light mode is 70% +/-3%, and the duty ratio of n PWM waves corresponding to the fourth music rhythm light mode is 80% +/-3%. The lamp controller 6 stores therein a greeting/sending-guest rhythm light pattern control program corresponding to three greeting/sending-guest rhythm light patterns one by one and a music rhythm light pattern control program corresponding to four music rhythm light patterns one by one.
The car rhythm light control method in this embodiment adopts the above car rhythm light control system, and the method includes:
after a user selects a certain greeting/sending rhythm light mode on the vehicle-mounted entertainment terminal 3, the vehicle-mounted entertainment terminal 3 sends the greeting/sending rhythm light mode selected by the user to the vehicle body controller 5, the vehicle body controller 5 acquires an engine state signal from the CAN bus, if the vehicle body controller 5 receives an unlocking/locking signal and the engine is not started, the vehicle body controller 5 generates n PWM waves with duty ratios corresponding to the greeting/sending rhythm light mode according to the greeting/sending rhythm light mode selected by the user, and outputs the n PWM waves to the lamp controller 6. If the lamp controller 6 receives N PWM waves, the frequency of the N PWM waves is within the preset frequency threshold range, the duty ratio of the N PWM waves is an element in the preset duty ratio set a, and N ismin≤n≤NmaxThen, the lamp controller 6 determines the holding time of the greeting/sending rhythm light pattern corresponding to the n PWM waves, and feeds back the holding time to the body controller 5. After receiving the maintenance time of the rhythm lighting mode of meeting/sending a guest fed back by the lamp controller 6, the vehicle body controller 5 continuously outputs a PWM wave (i.e., high level) with a duty ratio of 100% to the lamp controller 6 until the maintenance time of the rhythm lighting mode of meeting/sending a guest reaches or a signal for turning off the rhythm lighting is received, and outputs a PWM wave (i.e., low level) with a duty ratio of 0% for a preset time to the lamp controller 6. When receiving the PWM wave with the duty ratio of 100%, the lamp controller 6 calls the PWM waves corresponding to the n PWM wavesA rhythm light mode control program for meeting/sending the guests controls the LED lamp 7 to realize corresponding rhythm light; and after receiving the PWM wave with the duty ratio of 0% in the preset time, the lamp controller 6 controls the LED lamp 7 to turn off the rhythm light.
After a user selects a certain music rhythm light mode on the vehicle-mounted entertainment terminal 3, the vehicle-mounted entertainment terminal 3 sends the music rhythm light mode selected by the user to the vehicle body controller 5, the vehicle body controller 5 acquires an engine state signal from the CAN bus, if the engine is not started, the vehicle body controller 5 generates n PWM waves with duty ratios corresponding to the music rhythm light mode according to the music rhythm light mode selected by the user, and outputs the n PWM waves to the lamp controller 6. If the lamp controller 6 receives N PWM waves, the frequency of the N PWM waves is within the preset frequency threshold range, the duty ratio of the N PWM waves is an element in the preset duty ratio set a, and N ismin≤n≤NmaxThen, the lamp controller 6 determines the holding time of the musical pulse light pattern corresponding to the n PWM waves, and feeds back the holding time to the body controller 5. After receiving the maintaining time of the music rhythm light mode fed back by the lamp controller 6, the vehicle body controller 5 sends a music request corresponding to the music rhythm light mode to the vehicle-mounted entertainment terminal 3, and continuously outputs a PWM wave (i.e., a high level) with a duty ratio of 100% to the lamp controller 6 until the maintaining time of the music rhythm light mode reaches or a signal for turning off the rhythm light is received, and outputs a PWM wave (i.e., a low level) with a duty ratio of 0% for a preset time to the lamp controller 6. When the lamp controller 6 receives the PWM waves with the duty ratio of 100%, calling a music rhythm light mode control program corresponding to the n PWM waves, and controlling the LED lamp 7 to realize corresponding rhythm light; and after receiving the PWM wave with the duty ratio of 0% in the preset time, the lamp controller 6 controls the LED lamp 7 to turn off the rhythm light. And after receiving the music playing request, the vehicle-mounted entertainment terminal 3 controls the loudspeaker 4 to play the music corresponding to the music rhythm light mode.
Wherein the preset set of duty cycles a consists of seven duty cycles stored in the luminaire controller 6, the 7 duty cycles and the alternativesThe three rhythm light patterns of the welcoming/sending guest and the four rhythm light patterns of the music are in one-to-one correspondence (namely, the 7 duty ratios are respectively 20% +/-3%, 30% +/-3%, 40% +/-3%, 50% +/-3%, 60% +/-3%, 70% +/-3%, and 80% +/-3%), and NminFor a predetermined minimum number of PWM waves, Nmin=3，NmaxIs a preset maximum number of PWM waves, NmaxT + f + a + b, T is an acceptable response time obtained by a calibration method, f is a preset frequency of the PWM wave output by the vehicle body controller, a is a number threshold obtained by the calibration method about a timing difference between the vehicle body controller and the lamp controller, and b is a number threshold obtained by the calibration method about a duty cycle fluctuation of the PWM wave output by the vehicle body controller.
As shown in fig. 2, in order to implement the car rhythm light control method, the control flow of the car body controller 5 includes:
and S1, judging whether an unlocking/locking signal is received or not, judging the greeting/sending rhythm light mode selected by the user and not starting the engine, if so, executing S2, otherwise, executing S5.
S2, according to the rhythm light pattern selected by the user, generating n PWM waves with duty ratios corresponding to the rhythm light pattern, and outputting the n PWM waves to the lamp controller 6, and then executing S3.
S3, after receiving the sustain time of the greeting/sending rhythm light pattern fed back by the lamp controller 6, continuously outputting the PWM wave with the duty ratio of 100% to the lamp controller 6, and then executing S4.
And S4, judging whether the maintaining time of the welcome/welcome rhythm light mode is reached or a signal of needing to turn off the rhythm light is received, if so, executing S9, otherwise, continuing to execute S4.
And S5, judging whether the music rhythm light mode selected by the user is received or not, and if the music rhythm light mode is not selected by the user, executing S6, otherwise, ending.
S6, according to the music rhythm light pattern selected by the user, generating n PWM waves having duty ratios corresponding to the music rhythm light pattern, and outputting the n PWM waves to the lamp controller 6, and then executing S7.
And S7, after receiving the maintaining time of the music rhythm light mode fed back by the lamp controller 6, sending a corresponding music playing request to the vehicle-mounted entertainment terminal 3, continuously outputting a PWM wave with a duty ratio of 100% to the lamp controller 6, and then executing S8.
S8, judging whether the maintaining time of the music rhythm light mode is reached or a signal of turning off the rhythm light is received, if so, executing S9, otherwise, continuing executing S8.
S9, outputting the PWM wave with the duty ratio of 0% for the preset time (for example, outputting the PWM wave with the duty ratio of 0% for 2S) to the lamp controller 6, and then ending.
As shown in fig. 3, in order to implement the car rhythm light control method, the control process of the lamp controller 6 includes:
and P1, judging whether the trigger condition is met, if so, executing P2, otherwise, continuing to execute P1. Wherein the triggering conditions are as follows: the lamp controller 6 receives N PWM waves, the frequency of the N PWM waves is within a preset frequency threshold range, the duty ratio of the N PWM waves is an element in a preset duty ratio set a, and N ismin≤n≤Nmax。
And P2, judging whether the n PWM waves correspond to the greeting/sending rhythm light mode, if so, executing P3, otherwise (indicating that the n PWM waves correspond to the music rhythm light mode) executing P7.
P3, determining the holding time of the greeting/sending rhythm light mode corresponding to the n PWM waves, feeding the holding time back to the vehicle body controller 5, and then executing P4.
P4, judging whether a PWM wave with a duty ratio of 100% is received, if so, executing P5, otherwise, executing P6.
And P5, calling a greeting/sending rhythm light mode control program corresponding to the n PWM waves, controlling the LED lamp 7 to realize corresponding rhythm light, and then executing P6.
And P6, judging whether a PWM wave with a duty ratio of 0% is received or not (for example, judging whether a PWM wave with a duty ratio of 0% is received or not for 2 s), if so, executing P11, and if not, returning to execute P4.
P7, determining the maintaining time of the musical rhythm light pattern corresponding to the n PWM waves, feeding the maintaining time back to the body controller 5, and then executing P8.
P8, judging whether a PWM wave with a duty ratio of 100% is received, if so, executing P9, otherwise, executing P10.
P9, calling a music rhythm light mode control program corresponding to the n PWM waves, controlling the LED lamp 7 to realize corresponding rhythm light, and then executing P10.
And P10, judging whether a PWM wave with a duty ratio of 0% in a preset time is received or not, if so, executing P11, and otherwise, returning to execute P8.
P11, controlling the LED lamp 7 to turn off the pulse light, and then ending.
Claims (5)
1. An automobile regular movement light control system comprises an unlocking/locking signal transmitting module (1), an unlocking/locking signal receiving module (2), a vehicle-mounted entertainment terminal (3), a loudspeaker (4), a vehicle body controller (5) and a lamp controller (6), wherein the unlocking/locking signal transmitting module (1) is in wireless communication with the unlocking/locking signal receiving module (2), the loudspeaker (4) is connected with the vehicle-mounted entertainment terminal (3) through a hard wire, the unlocking/locking signal receiving module (2), the vehicle-mounted entertainment terminal (3) and the vehicle body controller (5) are connected through a CAN bus, and the lamp controller (6) is connected with an LED lamp (7) through a hard wire; the method is characterized in that: the vehicle body controller (5) is connected with the lamp controller (6) through a hard wire.
2. A car rhythm light control method is characterized in that: a car rhythm light control system as claimed in claim 1, the method comprising:
when the vehicle body controller (5) receives the unlocking/locking signal sent by the unlocking/locking signal receiving module (2) and the engine is not started, according to the greeting/sending rhythm light mode selected by the user and sent by the vehicle-mounted entertainment terminal (3), n PWM waves with the duty ratio corresponding to the greeting/sending rhythm light mode are generated, and the n PWM waves are output to the lamp controller (6); after receiving the maintaining time of the rhythm light pattern of meeting/sending the guest fed back by the lamp controller (6), the vehicle body controller (5) continuously outputs PWM waves with the duty ratio of 100% to the lamp controller (6), and when the maintaining time of the rhythm light pattern of meeting/sending the guest reaches or receives a signal of needing to turn off the rhythm light, the vehicle body controller (5) outputs PWM waves with the duty ratio of 0% of preset time to the lamp controller (6);
when the vehicle body controller (5) receives a music rhythm light mode selected by a user and sent by the vehicle-mounted entertainment terminal (3) and the engine is not started, n PWM waves with duty ratios corresponding to the music rhythm light mode are generated and output to the lamp controller (6); after receiving the maintaining time of the music rhythm light mode fed back by the lamp controller (6), the vehicle body controller (5) sends a corresponding music playing request to the vehicle-mounted entertainment terminal (3), continuously outputs PWM waves with the duty ratio of 100% to the lamp controller (6), and outputs PWM waves with the duty ratio of 0% to the lamp controller (6) when the maintaining time of the music rhythm light mode reaches or a signal needing to turn off rhythm light is received;
after judging that the triggering conditions are met, the lamp controller (6) determines the maintaining time of the rhythm light mode corresponding to the n PWM waves and feeds the maintaining time back to the vehicle body controller (5); when the lamp controller (6) receives the PWM waves with the duty ratio of 100%, calling a rhythm light mode control program corresponding to the n PWM waves, and controlling the LED lamp (7) to realize corresponding rhythm light; and after receiving the PWM wave with the duty ratio of 0% in the preset time, the lamp controller (6) controls the LED lamp (7) to turn off the rhythm light.
3. A car rhythm light control method according to claim 2, characterized in that: if the lamp controller (6) receives N PWM waves, the frequency of the N PWM waves is within a preset frequency threshold range, the duty ratio of the N PWM waves is one element in a preset duty ratio set A, and N ismin≤n≤NmaxIf yes, the triggering condition is met; the preset duty ratio set A consists of m duty ratios stored in the lamp controller, and the m duty ratios and m-x welcome/welcome guests are available for selectionRhythm light pattern, x music rhythm light patterns are in one-to-one correspondence, NminFor a predetermined minimum number of PWM waves, NmaxIs the preset maximum number of PWM waves.
4. A car rhythm light control method according to claim 3, wherein: said N ismin=3, said NmaxT + f + a + b; the method comprises the following steps of obtaining the acceptable response time through a calibration mode, obtaining the frequency of a PWM wave output by a preset vehicle body controller, obtaining a number threshold value related to the time sequence difference between the vehicle body controller and a lamp controller through the calibration mode, and obtaining b number threshold value related to the duty ratio fluctuation of the PWM wave output by the vehicle body controller through the calibration mode.
5. A car rhythm light control method according to any one of claims 2 to 4, wherein: three rhythm light modes of meeting/sending the guest are respectively as follows: a first greeting/sending guest rhythm light mode, a second greeting/sending guest rhythm light mode and a third greeting/sending guest rhythm light mode; there are four music rhythm light patterns, which are: a music rhythm light mode I, a music rhythm light mode II, a music rhythm light mode III and a music rhythm light mode IV; the duty ratio of n PWM waves corresponding to the first greeting/sending rhythm light mode is 20% +/-3%, the duty ratio of n PWM waves corresponding to the second greeting/sending rhythm light mode is 30% +/-3%, the duty ratio of n PWM waves corresponding to the third greeting/sending rhythm light mode is 40% +/-3%, the duty ratio of n PWM waves corresponding to the first music rhythm light mode is 50% +/-3%, the duty ratio of n PWM waves corresponding to the second music rhythm light mode is 60% +/-3%, the duty ratio of n PWM waves corresponding to the third music rhythm light mode is 70% +/-3%, and the duty ratio of n PWM waves corresponding to the fourth music rhythm light mode is 80% +/-3%.
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