CN213457705U - Multifunctional circuit based on automobile ceiling lamp - Google Patents

Multifunctional circuit based on automobile ceiling lamp Download PDF

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CN213457705U
CN213457705U CN202022135186.5U CN202022135186U CN213457705U CN 213457705 U CN213457705 U CN 213457705U CN 202022135186 U CN202022135186 U CN 202022135186U CN 213457705 U CN213457705 U CN 213457705U
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resistor
triode
grounded
capacitor
circuit
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徐文庆
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Chongqing Rebo Lighting & Electronics Co ltd
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Chongqing Rebo Lighting & Electronics Co ltd
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Abstract

The utility model discloses a multifunctional circuit based on an automobile ceiling lamp, which comprises an automobile ceiling lamp MCU, wherein the automobile ceiling lamp MCU is connected with an automobile ECU, and the automobile ceiling lamp MCU is connected with a power module; the control output end of the automobile ceiling lamp MCU is connected with a reading lamp indicating module, an alarm module, a key backlight indicating module, a safety belt and safety airbag indicating module and an atmosphere lamp module; the power module supplies power to the reading lamp indicating module, the alarm module, the key backlight indicating module, the safety belt and safety airbag indicating module and the atmosphere lamp module. Has the advantages that: become scale-based processing, installation, form a set of equipment, integral erection is on the car, wholly takes off during the maintenance, can not disturb between the circuit. The wiring is standardized, and the fault point is easy to find.

Description

Multifunctional circuit based on automobile ceiling lamp
Technical Field
The utility model relates to a car dome lamp technical field, specific multifunctional circuit based on car dome lamp that says so.
Background
The automotive interior top contains multiple functional mode, and the majority adopts the independent arrangement mode of dispersion to design among the prior art, but along with the increase of design function, the module is diversified, adopts independent microprocessor MCU respectively, and the dispersion is arranged to respectively with car master controller ECU, because the design function is many, lead to the connector not enough. Based on the defects, the circuit layout is complex, the maintenance of workers is difficult, and when a fault occurs, the fault needs to be checked in a subarea mode. The lines are mutually wound, are easy to interfere with each other, have poor reliability, are dispersedly arranged and are difficult to disassemble and assemble.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model provides a based on car dome lamp multifunctional circuit, with reading lamp indicating module, alarm module, button background light indicating module, safety belt and air bag indicating module, the atmosphere lamp module integration arrangement at car top, the dismouting of being convenient for, powerful, circuit layout is simple understandable.
In order to achieve the above purpose, the utility model adopts the following specific technical scheme:
the utility model provides a based on car dome lamp multifunctional circuit, includes car dome lamp MCU, this car dome lamp MCU is connected with car ECU, and its key technology lies in: the automobile ceiling lamp MCU is connected with a power supply module; the control output end of the automobile ceiling lamp MCU is connected with a reading lamp indicating module, an alarm module, a key backlight indicating module, a safety belt and safety airbag indicating module and an atmosphere lamp module; the power module supplies power to the reading lamp indicating module, the alarm module, the key backlight indicating module, the safety belt and safety airbag indicating module and the atmosphere lamp module.
The touch key circuit is a capacitive touch circuit and is at least provided with a touch shielding key, an SOS alarm key, a front row left reading lamp key, a front row right reading lamp key, a reading lamp full-bright key and a BCALL alarm key. Through the design, the reading lamp indicating module, the alarm module, the key backlight indicating module, the safety belt, the safety airbag indicating module and the atmosphere lamp module are integrally arranged at the top of the automobile to form an integrated system, and the corresponding power supply module is arranged for the system to supply power independently, so that the integrated system is easy to install and process.
Furthermore, the power supply module comprises a power supply adjusting module, a power supply conversion module and a power supply driving output module; the power end of the power supply adjusting module acquires a power supply of an automobile, and the VS output end of the power supply adjusting module is connected with the power supply driving output module and the power supply conversion module and supplies power to the reading lamp indicating module, the alarm module, the key backlight indicating module, the safety belt and the safety airbag indicating module through the VS output end; the VS-MCU output end of the power supply adjusting module supplies power to the automobile ceiling lamp MCU in a sleep mode; a diode D1 is arranged in the Power supply regulating module, the anode of the diode D1 is used as the Power end of the Power supply regulating module, the cathode of the diode D1 is connected with one end of a bidirectional voltage stabilizing diode TVS1, one end of the bidirectional voltage stabilizing diode TVS1 is used as the VS output end of the Power supply regulating module, the anode of the diode D1 is grounded through a capacitor C27 and a capacitor C28, the other end of the bidirectional voltage stabilizing diode TVS1 is grounded, the cathode of the diode D1 is also connected with the anode of a polar capacitor CE1, the cathode of the polar capacitor CE1 is grounded, the cathode of the diode D1 is also connected with one end of an inductor FB9, the other end of the inductor FB 2 is used as the VS MCU output end, one end of the inductor FB 8 is grounded through a capacitor C25, and the other end of the inductor FB9 is grounded through a; the power supply conversion module is connected with a sleep mode control end of the automobile ceiling lamp MCU, and a 12V AD output end of the power supply conversion module supplies power to the automobile ceiling lamp MCU in a wake-up mode; the power conversion module comprises a PNP triode Q1, an emitter of a triode Q1 is used as a VS input end of the power conversion module, a resistor R15 is further connected between a base and an emitter of the triode Q1, the base of the triode Q1 is further connected with a collector of a resistance triode Q5 through a resistor R20, the base of the resistance triode Q5 is used as a Sleep _ Mode ctr input end of the power conversion module, the base of the resistance triode Q5 is further grounded through a capacitor C65, the collector of the triode Q1 is connected with one end of the resistor R5 through a resistor R6, the other end of the resistor R5 is used as a 12V AD output end, the other end of the resistor R5 is further grounded through a capacitor C53, one end of the resistor R5 is grounded through a capacitor C6, and one end of the resistor R5 is further grounded through a resistor R10; the power supply driving output module is connected with a sleep mode control end of the automobile ceiling lamp MCU, and an RRL output end of the power supply driving output module is used for supplying power to an automobile rear row reading lamp; the power supply driving output module comprises a PNP triode Q23 and an impedance triode Q14, wherein an emitter of the triode Q23 is connected with one end of a resistor R32, the other end of the resistor R32 is used as a VS input end, one end of the resistor R32 is grounded through a capacitor C87, a resistor R19 is connected between the emitter of the triode Q23 and a base electrode of the triode Q23, a collector of the triode Q23 is connected with one end of a piezoresistor FS1, and the other end of the piezoresistor FS1 is used as an RRL output end; the base electrode of the triode Q23 is connected with the collector electrode of the impedance triode Q14 through a resistor R116, the base electrode of the impedance triode Q14 is used as the Sleep _ Mode ctr input end of the power supply driving output module, and the emitting electrode of the impedance triode Q14 is grounded.
By adopting the scheme, the MCU is awakened by pressing the touch key, unnecessary energy consumption is avoided under the condition that the dome lamp is not needed, the load of the storage battery is reduced, the utilization rate and the service time of the storage battery are improved, and the dome lamp system is more intelligent under the low-power-consumption mode. The MCU is powered only by the VS MCU in the sleep mode, and other working modules connected with the MCU keep the sleep mode if the MCU does not send any control signal in the sleep mode. When the MCU is powered by the 12V AD after awakening.
Still further, the reading lamp indication module comprises a front row left reading lamp driving display circuit, a front row right reading lamp driving display circuit, a rear row left reading drive circuit, a rear row left reading lamp lighting prompt circuit, a rear row right reading drive circuit and a rear row right reading lamp lighting prompt circuit; the front row left reading lamp control output end of the automobile ceiling lamp MCU is connected with a front row left reading lamp driving display circuit, the front row right reading lamp control output end of the automobile ceiling lamp MCU is connected with a front row right reading lamp driving display circuit, the rear row left reading lamp control output end of the automobile ceiling lamp MCU is connected with a rear row left reading drive circuit, the rear row left reading lamp lighting feedback end of the automobile ceiling lamp MCU is connected with a rear row left reading lamp lighting prompting circuit, the rear row right reading lamp control output end of the automobile ceiling lamp MCU is connected with a rear row right reading drive circuit, and the rear row right reading lamp lighting feedback end of the automobile ceiling lamp MCU is connected with a rear row right reading lamp lighting prompting circuit; the front row left reading lamp driving display circuit comprises an NPN triode Q3, a collector of the NPN triode Q3 is connected with one end of a resistor R14, one end of the resistor R14 is grounded through a capacitor C23, and the other end of the resistor R14 is used for being connected with a front row left reading lamp control output end of the automobile ceiling lamp MCU; a capacitor C10 is connected between a collector and an emitter of the NPN triode Q3, an emitter of the NPN triode Q3 is grounded, a collector of the NPN triode Q3 is also connected with a base of an NPN triode Q2, an emitter of the NPN triode Q2 is grounded through a resistor R17, a base of the NPN triode Q3 is connected with an emitter of the NPN triode Q2, a collector of the NPN triode Q2 is connected with a cathode of the LED1, an anode of the LED1 is connected with a VS output end of the power module through a parallel resistor consisting of the resistor R17, the resistor R9 and the resistor R11, and two ends of the LED1 are also connected with a capacitor C7 in parallel; the capacitance of the capacitor C23 is 10 nF; the front row right reading lamp driving display circuit comprises an NPN triode Q6, a collector of the NPN triode Q6 is connected with one end of a resistor R13, one end of the resistor R13 is also grounded through a capacitor C22, and the other end of the resistor R13 is used for being connected with a front row right reading lamp control output end of the automobile ceiling lamp MCU; a capacitor C11 is connected between a collector and an emitter of the NPN triode Q6, an emitter of the NPN triode Q6 is grounded, a collector of the NPN triode Q6 is also connected with a base of an NPN triode Q4, an emitter of the NPN triode Q4 is grounded through a resistor R43, a base of the NPN triode Q6 is connected with an emitter of the NPN triode Q4, a collector of the NPN triode Q4 is connected with a cathode of the LED17, an anode of the LED17 is connected with a VS output end of the power module through a parallel resistor consisting of a resistor R1, a resistor R2 and a resistor R3, and a capacitor C1 and a resistor R8 are connected in parallel at two ends of the LED 17; the capacitance of the capacitor C22 is 10 nF; the rear row left reading driving circuit comprises a resistor triode Q32, a collector of the resistor triode Q32 is connected with one end of a resistor R28, the other end of the resistor R28 is connected with a rear row left reading lamp control output end of the automobile ceiling lamp MCU, an emitter of the resistor triode Q32 is grounded, a base of the resistor triode Q32 is connected with one end of a resistor R12, the other end of the resistor R12 is grounded through a capacitor C15, and the other end of the resistor R12 is used as a driving end of the rear row left reading driving circuit; the capacitance of the capacitor C15 is 10 nF; the lighting prompt circuit of the rear row left reading lamp comprises a diode D2, the cathode of the diode D2 is used as the acquisition end of the lighting prompt circuit of the rear row left reading lamp, the cathode of the diode D2 is grounded through a capacitor C46, the anode of the diode D2 is grounded through a capacitor C44, the anode of the diode D2 is connected with a power supply VCC 3V3 through a resistor R78, the anode of the diode D2 is connected with one end of a resistor R79, the other end of the resistor R79 is grounded through a capacitor C45, and the other end of the resistor R79 is connected with the lighting feedback end of the rear row left reading lamp of the automobile ceiling lamp MCU; the rear-row right reading driving circuit comprises a resistor triode Q31, a collector of the resistor triode Q31 is connected with one end of a resistor R27, the other end of the resistor R27 is connected with a rear-row right reading lamp control output end of the automobile ceiling lamp MCU, an emitter of the resistor triode Q31 is grounded, a base of the resistor triode Q31 is connected with one end of a resistor R4, the other end of the resistor R4 is grounded through a capacitor C14, and the other end of the resistor R4 serves as a driving end of the rear-row right reading driving circuit; the capacitance of the capacitor C14 is 10 nF; the circuit of prompting is lighted to reading lamp on the right side of back row includes diode D4, and the collection end of prompting circuit is lighted as the reading lamp on the right side of back row to this diode D4's negative pole, diode D4's negative pole still is through electric capacity C60 ground connection, diode D4's positive pole is through electric capacity C61 ground connection, diode D4's positive pole still connects power VCC 3V3 through resistance R88, diode D4's positive pole is connected with resistance R92's one end, resistance R92's the other end is through electric capacity C59 ground connection, resistance R92's the other end still with the feedback end is lighted to the reading lamp on the right side of back row of car dome lamp MCU.
After the key acquisition end of the automobile ceiling lamp MCU acquires a key signal sent by the reading lamp touch key circuit, the switch circuit in the automobile ceiling lamp MCU is driven to light the reading lamp connected with the corresponding key. In the scheme, the rear row reading lamp and the front row reading lamp do not share one MCU, when the front row is controlled by the touch switch, the MCU of the automobile dome lamp sends a corresponding driving signal to the MCU of the rear row, and whether the rear row reading lamp is lightened or not is determined after a lightening signal of the rear row reading lamp is fed back and collected by the MCU of the rear row. Then based on integrated top operating panel, the reading lamp of back row separately arranges with above-mentioned scheme, also can realize synchro control to the car dome lamp MCU that integrated panel inside set up can gather the condition of lighting of back row in real time, real-time feedback. Meanwhile, the capacitance of the driving circuit is 10nF, so that the capacitance is reduced, and the time difference between the front reading lamp and the rear reading lamp when the reading lamps are fully on is eliminated. The lighting signals of the reading lamps in the back row are collected in real time through the lighting prompt circuit of the right reading lamp in the back row and the lighting prompt circuit of the left reading lamp in the back row for real-time feedback.
Still further, the alarm module comprises an SOS switch circuit, an SOS display lamp circuit, a BCALL switch circuit and a BCALL display lamp circuit; an SOS control output end SOS output ctr of the automobile ceiling lamp MCU is connected with the SOS switch circuit, a switch signal output end of the SOS switch circuit is connected with the automobile ECU, and the automobile ECU is connected with the SOS display lamp circuit; a BCALL control output end BCALL ctr of the automobile ceiling lamp MCU is connected with a BCALL switch circuit, a switch signal output end of the BCALL switch circuit is connected with the automobile ECU, and the automobile ECU is connected with the BCALL display lamp circuit; the SOS switch circuit comprises a resistor R114, one end of the resistor R114 is connected with an SOS control output end, one end of the resistor R114 is grounded after passing through a capacitor C125, the other end of the resistor R114 is connected with the base electrode of an eighth switch tube Q8, the eighth switch tube Q8 is an NPN type band-stop triode Q8, the emitting electrode of the band-stop triode Q8 is grounded, the collector electrode of the band-stop triode Q8 is connected with one end of a resistor R73, and the other end of the resistor R73 is used as a switch signal output end of the SOS switch circuit; the collector electrode of the band elimination triode Q8 is grounded after passing through a capacitor C101; the BCALL switch circuit comprises a resistor R122, one end of the resistor R122 is connected with a BCALL control output end, the other end of the resistor R122 is grounded after passing through a capacitor C126, and the other end of the resistor R122 is grounded after passing through a capacitor C79; the other end of the resistor R122 is connected with the base electrode of a ninth switching tube Q9, the ninth switching tube Q9 is an NPN type triode Q9 with a resistance, the emitting electrode of the triode Q9 with the resistance is grounded, the collector electrode of the triode Q9 with the resistance is connected with one end of a resistor R70, the other end of the resistor R70 is used as the switching signal output end of the BCALL switching circuit, and the collector electrode of the triode Q9 with the resistance is grounded after passing through a capacitor C98; the other end of the resistor R70 is connected with one end of a protection diode ESD2, and the other end of the protection diode ESD2 is connected with the other end of the resistor R73; the other end of the resistor R70 is grounded through a capacitor C80; the other end of the resistor R70 is connected with the other end of the resistor R73; the SOS display lamp circuit comprises a diode D5, the anode of the diode D5 is connected with the SOS alarm display end of the automobile ECU, the anode of the diode D5 is grounded after passing through a capacitor C72, the cathode of the diode D5 is connected with the anode of a light-emitting diode LED7 after passing through a parallel resistor formed by connecting a resistor R82 and a resistor R138 in parallel, and the cathode of the light-emitting diode LED7 is grounded; two ends of the LED7 of the light-emitting diode are connected with a resistor R83 and a capacitor C66 in parallel; the BCALL display lamp circuit comprises a diode D7, wherein the anode of the diode D7 is connected with a BCALL alarm display end of the automobile ECU, the anode of the diode D7 is grounded after passing through a capacitor C50, the cathode of the diode D7 is connected with the anode of an LED8 of the light-emitting diode after passing through a resistor R86, and the cathode of the LED8 of the light-emitting diode is grounded; and a resistor R42 and a capacitor C77 are connected in parallel at two ends of the LED8 of the light-emitting diode.
According to different alarm types, an SOS alarm function and a B CALL alarm function are correspondingly set; the SOS alarm function is generally used for rescuing in the functions of fire fighting, medical treatment, traffic police and the like; the B CALL alarm is used for the function of setting a telephone number by a user in a self-defined way to carry out dialing alarm or sending an alarm signal. When the MCU receives the touch alarm signal, the output end of the MCU sends a high-level control signal to switch on a switch circuit for alarming. When the switch circuit is conducted, the indicator lamp in the display lamp circuit is lightened to indicate that the alarm is successful, and meanwhile, the alarm rescue call is carried out.
Still further, the key backlight indicating module comprises a key backlight circuit, and the key backlight circuit at least comprises a left reading lamp key backlight circuit, a reading lamp full-bright touch key backlight circuit and a right reading lamp key backlight circuit; the left reading lamp key backlight circuit comprises a light emitting diode LED5, and the anode of the light emitting diode LED6 is connected with the VS output end of the power supply module through a resistor R49 and a resistor R51 which are connected in parallel; the VS output end is grounded through a capacitor C42; the cathode of the light emitting diode LED5 is connected with the collector of the NPN resistor transistor Q22, the base of the NPN resistor transistor Q22 is connected with one end of a resistor R18, the other end of the resistor R18 is connected with the left reading lamp key background lamp control output end ILL _ LH _ ctr of the automobile ceiling lamp MCU, the common end of the base of the resistor R18 and the base of the NPN resistor transistor Q22 is grounded through a capacitor C63, the other end of the resistor R18 is grounded through a capacitor C21, the emitter of the NPN resistor transistor Q22 is grounded, and the collector of the NPN resistor transistor Q22 is connected with the cathode of the light emitting diode LED; a capacitor C24 and a resistor R109 are connected in parallel with two ends of the light-emitting diode LED 5; the reading lamp full-bright touch key background lamp circuit comprises a light emitting diode LED6 and an NPN resistor transistor Q25, wherein the anode of the light emitting diode LED6 is connected with the VS output end of the power supply module through a resistor R58 and a resistor R62 which are connected in parallel; the VS output end of the power supply module is grounded through a capacitor C42; the base electrode of the NPN resistor transistor Q25 is connected with one end of a resistor R21, the other end of the resistor R21 is connected with a reading lamp full-bright key backlight control output end ILL _ door _ ctr of the automobile ceiling lamp MCU, the common end of the base electrodes of the resistor R21 and the NPN resistor transistor Q22 is grounded through a capacitor C64, the other end of the resistor R21 is grounded through a capacitor C29, the emitter electrode of the NPN resistor transistor Q25 is grounded, and the collector electrode of the NPN resistor transistor Q25 is connected with the cathode of a light-emitting diode LED 6; a capacitor C31 and a resistor R110 are connected in parallel at two ends of the light-emitting diode LED 6; the right reading lamp key backlight circuit comprises a light-emitting diode LED2, the anode of the light-emitting diode LED2 is connected with one end of a third voltage-dividing resistor formed by connecting a resistor R40 and a resistor R41 in parallel, and the other end of the third voltage-dividing resistor formed by connecting a resistor R40 and a resistor R41 in parallel is connected with the collector of a PNP triode Q10; an emitter of a PNP triode Q10 is connected with a VS output end of the power supply module, a base of the PNP triode Q10 is connected with a collector of a resistor transistor Q18 through a resistor R117, an emitter of the resistor transistor Q18 is grounded, a base of the resistor transistor Q18 is connected with a right reading lamp key background lamp control output end SWDCLK & ILL _ RH _ ctr of the automobile ceiling lamp MCU through a resistor R16, and a collector of the resistor transistor Q18 is connected with the VS output end of the power supply module through a resistor R115; the anode of the light emitting diode LED2 is connected with the emitter of a PNP triode Q33, the collector of the PNP triode Q33 is grounded, and the base of the PNP triode Q33 is grounded through a resistor R118 and a capacitor C19; and a resistor R119 is arranged between the base electrode and the emitter electrode of the PNP triode Q33.
Arranging a touch reading lamp key, wherein the key and the panel are integrally designed; and set up the background light on the button, through adjusting background light luminance come the feedback whether take place the touch button, even light dim also can find the button position fast. When no key is arranged, the background lamp is in a lighting state, so that an operator can quickly find the key position of the reading lamp when the vehicle is in an environment with poor light. When a press occurs, the backlight brightness changes, giving a feedback signal to the operator that a press has occurred. The touch key is integrated with the table board, so that the table is attractive in appearance, not easy to accumulate dust and easy to clean.
Due to the fact that the needed ports are numerous, when the MCU is initialized, instantaneous high pulses often appear at the PWM adjusting end, and the light emitting diode LED flickers. The situation belongs to misoperation, a triode Q33 and a capacitor C19 are arranged to overcome the defects, when high pulse occurs, the anti-flicker charging capacitor C19 starts charging from uncharged electricity, and at the moment, the triode Q33 is conducted to enable a light-emitting diode LED to be short-circuited, so that the problem of high-pulse flicker initiation is prevented.
Still further, the safety belt and safety air bag indicating module comprises a safety air bag background light indicating driving circuit, a safety air bag forbidden indicating driving circuit, a safety air bag starting indicating driving circuit and a safety belt reminding driving circuit; the signal input end of the safety airbag background light indication driving circuit is used for being connected with the safety airbag background light control output end of an automobile ceiling lamp MCU, and the driving output end of the safety airbag background light indication driving circuit is connected with the safety airbag background light indication circuit; the signal input end of the airbag forbidding indication driving circuit is used for being connected with an airbag forbidding control output end of an automobile ceiling lamp MCU, the driving output end of the airbag forbidding indication driving circuit is connected with an airbag forbidding indication circuit, an airbag forbidding self-diagnosis point is arranged between the airbag forbidding indication driving circuit and the airbag forbidding indication circuit, and the airbag forbidding self-diagnosis point is used for being connected with an airbag forbidding diagnosis acquisition end of the automobile ceiling lamp MCU after passing through an airbag forbidding acquisition circuit; the signal input end of the safety airbag starting indication driving circuit is used for being connected with an airbag starting control output end of an automobile ceiling lamp MCU, the driving output end of the safety airbag starting indication driving circuit is connected with a safety airbag starting indication circuit, an airbag starting self-diagnosis point is arranged between the safety airbag starting indication driving circuit and the safety airbag starting indication circuit, and the airbag starting self-diagnosis point is used for being connected with an airbag starting diagnosis acquisition end of the automobile ceiling lamp MCU after passing through an airbag starting acquisition circuit; the safety belt reminding driving circuit comprises a safety belt reminding driving circuit and a safety belt reminding indicating circuit, wherein the signal input end of the safety belt reminding driving circuit is used for being connected with the safety belt control output end of an automobile ceiling lamp MCU, the driving output end of the safety belt reminding driving circuit is connected with the safety belt reminding indicating circuit, a safety belt reminding self-diagnosis point is arranged between the safety belt reminding driving circuit and the safety belt reminding indicating circuit, and the safety belt reminding self-diagnosis point is used for being connected with the safety belt reminding diagnosis collecting end of the automobile ceiling lamp MCU after the safety belt reminding collecting circuit.
And correspondingly setting a driving indicating circuit based on four indicating states of safety air bag background light indication, safety air bag forbidding indication, safety air bag starting indication, safety belt reminding indication and the like. And voltage acquisition points are respectively arranged in three lines of airbag forbidding indication, airbag starting indication and safety belt reminding indication, and line voltage is acquired in real time. And the acquired voltage value is used for being sent to a corresponding ceiling lamp microcontroller for detection, comparison and judgment, so that the current state of the circuit is obtained. The line voltage value can be combined to derive the fault point and fault type when a display fault occurs. For example when the safety belt reminds the circuit to open circuit, correspond the pilot lamp and do not light, the magnitude of voltage of this circuit changes, then passes through the utility model discloses a magnitude of voltage that acquisition circuit was gathered is reminded to the safety belt can obtain the safety belt and remind the indication fault reason because show the trouble, and the trouble that non-safety belt itself appears.
Still further, the airbag backlight indicating driving circuit comprises a resistor R104, one end of the resistor R104 is used as a signal input end of the airbag backlight indicating driving circuit, one end of the resistor R104 is also grounded through a capacitor C82, the other end of the resistor R104 is connected with the base of a resistor triode Q13, the emitter of the resistor triode Q13 is grounded, the collector of the resistor triode Q13 is connected with the base of a PNP triode Q38 through a resistor R89, the common terminal of the PNP transistor Q38 and the resistor R89 is also connected to the VS output terminal of the power module via the resistor R84, the emitter of the PNP triode Q38 is connected with the VS output end of the power supply module, the collector of the PNP triode Q38 is connected with one end of a resistor R29, the other end of the resistor R29 is grounded through a resistor R38 and a capacitor C35 respectively, and the other end of the resistor R29 is also used as a driving output end of the airbag backlight indicating and driving circuit; the airbag background light indicating circuit comprises a light emitting diode LED9, a light emitting diode LED10 and a light emitting diode LED11 which are sequentially connected in series, wherein two ends of the light emitting diode LED9 are connected with a capacitor C97 in parallel, two ends of the light emitting diode LED10 are connected with a capacitor C118 in parallel, two ends of a light emitting diode LED11 are connected with a capacitor C56 in parallel, the cathode of the light emitting diode LED11 is grounded, and the anode of the light emitting diode LED9 is connected with the other end of the resistor R29; the airbag forbidding indication driving circuit comprises a resistor R113, one end of the resistor R113 is used as a signal input end of the airbag forbidding indication driving circuit, one end of the resistor R113 is grounded through a capacitor C74, the other end of the resistor R113 is grounded through a capacitor C106, the other end of the resistor R113 is connected with the base electrode of a resistor triode Q19, the emitter electrode of the resistor triode Q19 is grounded, the collector electrode of the resistor triode Q19 is connected with the base electrode of a PNP triode Q41 through a resistor R105, and the base electrode of the PNP triode Q41 is connected with the VS output end of the power module through a resistor R90; the emitter of the PNP triode Q41 is connected with the VS output end of the power supply module, the collector of the PNP triode Q41 is connected with one end of a resistor R93 and a resistor 94 which are connected in parallel, and the other end of the PNP triode Q41 is used as the driving output end of the airbag forbidding indication driving circuit; the airbag forbidding indicating circuit comprises a light emitting diode LED12, a resistor R91 and a capacitor C55 are connected in parallel at two ends of a light emitting diode LED12, the anode of the light emitting diode LED12 is connected with the driving output end of the airbag forbidding indicating driving circuit, and the cathode of the light emitting diode LED12 is grounded; the airbag forbidden acquisition circuit comprises a resistor R31, one end of the resistor R31 is connected with the airbag forbidden self-diagnosis point, the other end of the resistor R31 is grounded through a resistor R68 and a capacitor C94, the other end of the resistor R31 is grounded through a resistor R68 and a capacitor C93, the other end of the resistor R31 is grounded through a capacitor C3, the resistor R31 is grounded through a resistor R74, and the common end of the resistor R68 and the capacitor C94 is used for being connected with the airbag forbidden diagnosis acquisition end of the automobile overhead light MCU; the airbag starting indication driving circuit comprises a resistor R124, one end of the resistor R124 is used as a signal input end of the airbag starting indication driving circuit, one end of the resistor R124 is grounded through a capacitor C84, the other end of the resistor R124 is grounded through a capacitor C109, the other end of the resistor R124 is connected with a base electrode of a resistor triode Q16, an emitting electrode of the resistor triode Q16 is grounded, a collector electrode of the resistor triode Q16 is connected with a base electrode of a PNP triode Q44 through a resistor R121, and the base electrode of the PNP triode Q44 is connected with a VS output end of the power module through a resistor R112; the emitter of the PNP triode Q44 is connected with the VS output end of the power supply module, the collector of the PNP triode Q44 is connected with one end of a resistor R96 and one end of a resistor 97 which are connected in parallel, and the other end of the PNP triode Q44 is used as the driving output end of the airbag starting indication driving circuit; the airbag starting indicating circuit comprises a light emitting diode LED13, a resistor R98 and a capacitor C58 are connected in parallel at two ends of a light emitting diode LED13, the anode of the light emitting diode LED13 is connected with the driving output end of the airbag starting indicating driving circuit, and the cathode of the light emitting diode LED13 is grounded; the airbag starting acquisition circuit comprises a resistor R76, one end of the resistor R76 is connected with the airbag starting self-diagnosis point, the other end of the resistor R76 is grounded through a resistor R77 and a capacitor C113, the other end of the resistor R76 is grounded through a resistor R77 and a capacitor C114, the other end of the resistor R76 is grounded through a capacitor C49, the resistor R76 is grounded through a resistor R80, and the common end of the resistor R77 and the capacitor C114 is used for being connected with the airbag starting diagnosis acquisition end of the automobile ceiling lamp MCU; the safety belt reminding driving circuit comprises a resistor R126, one end of the resistor R126 is used as a signal input end of the safety belt reminding driving circuit, one end of the resistor R126 is grounded through a capacitor C83, the other end of the resistor R126 is grounded through a capacitor C108, the other end of the resistor R126 is connected with the base electrode of a resistor triode Q15, the emitter electrode of the resistor triode Q15 is grounded, the collector electrode of the resistor triode Q15 is connected with the base electrode of a PNP triode Q45 through a resistor R125, and the base electrode of the PNP triode Q45 is connected with the VS output end of the power module through a resistor R123; an emitting electrode of the PNP triode Q45 is connected with a VS output end of the power module, a collector electrode of the PNP triode Q45 is connected with one end of a resistor R101, and the other end of the PNP triode Q45 is used as a driving output end of the safety belt reminding driving circuit; the safety belt reminding indicating circuit comprises a light emitting diode LED14, a light emitting diode LED15 and a light emitting diode LED16 which are sequentially connected in series; a capacitor C68 is connected in parallel with two ends of the light emitting diode LED14, a capacitor C104 is connected in parallel with two ends of the light emitting diode LED15, a capacitor C105 is connected in parallel with two ends of the light emitting diode LED16, the anode of the light emitting diode LED14 is connected with the safety belt reminding self-diagnosis point, the cathode of the light emitting diode LED16 is grounded, and the anode of the light emitting diode LED14 is grounded through the cathode of the light emitting diode LED16 after passing through a resistor R106; the safety belt reminding acquisition circuit comprises a resistor R71, one end of the resistor R71 is connected with the safety belt reminding self-diagnosis point, the other end of the resistor R71 is grounded through a resistor R72 and a capacitor C112, the other end of the resistor R71 is grounded through a resistor R72 and a capacitor C111, the other end of the resistor R71 is grounded through a capacitor C38, and the other end of the resistor R71 is grounded through a resistor R75; and the common end of the resistor R72 and the capacitor C111 is used for being connected with a safety belt reminding diagnosis acquisition end of the automobile ceiling lamp MCU.
Four indications are set, namely an air bag background light indication, an air bag forbidden indication, an air bag starting indication and a safety belt reminding indication. To indicate the use state of an airbag or a seat belt. And voltage acquisition circuits are respectively added in three indicating circuits of airbag forbidding indication, airbag starting indication and safety belt reminding indication, the displayed voltages are acquired in real time, and when a display fault occurs, whether the line fault occurs or not and the corresponding fault type can be quickly obtained, so that fault self-diagnosis is realized.
Still further, the atmosphere lamp module comprises a first atmosphere lamp set and a second atmosphere lamp set; each group of atmosphere lamp groups is provided with three branch circuits: a green light circuit, a red light circuit and a blue light circuit; each branch circuit is provided with an atmosphere lamp driving circuit and an atmosphere lamp display circuit which are sequentially connected with the automobile ceiling lamp MCU; the atmosphere lamp driving circuit of the Green lamp circuit in the first atmosphere lamp group comprises an impedance triode Q7, the base of the impedance triode Q7 and one end of a resistor R60 are connected with the other end of the resistor R60 through a capacitor C103 and grounded, the other end of the resistor R60 is also connected with a Green atmosphere lamp control output end Green ctr of the automobile dome lamp MCU, the base of the impedance triode Q7 is grounded through a capacitor C67, the emitter of the impedance triode Q7 is grounded, the collector of the impedance triode Q7 is respectively connected with a collector of a PNP triode Q12 and a base of a PNP triode Q17 through a resistor R30, the emitter of the triode Q12 is connected with the VS output end of the power module, the base of the triode Q12 is connected with the emitter of the triode Q17, a resistor R39 is connected between the emitter and the base of the triode Q12, the collector of the triode Q17 is connected with one end of a resistor R44, the other end of the resistor R44 is grounded through a capacitor C41, and the other end of the resistor R44 is used as a driving output end AL G1+ of an atmosphere lamp driving circuit of a green lamp circuit in the first atmosphere lamp group; the atmosphere lamp driving circuit of the Green lamp circuit in the second atmosphere lamp group comprises an impedance triode Q29, the base of the impedance triode Q29 is connected with one end of a resistor R60, the other end of the resistor R60 is grounded through a capacitor C103, the other end of the resistor R60 is also connected with a Green atmosphere lamp control output end Green ctr of the automobile ceiling lamp MCU, the base of the impedance triode Q29 is grounded through a capacitor C110, the emitter of the impedance triode Q29 is grounded, the collector of the impedance triode Q29 is respectively connected with a collector of a PNP triode Q30 and a base of a PNP triode Q35 through a resistor R59, the emitter of the triode Q30 is connected with the VS output end of the power module, the base of the triode Q30 is connected with the emitter of the triode Q35, a resistor R63 is connected between the emitter of the triode Q30 and the base, the collector of the triode Q35 is connected with one end of the resistor R64, the other end of the resistor R64 is grounded through a capacitor C99, and the other end of the resistor R64 is used as a driving output end AL G2+ of an atmosphere lamp driving circuit of a green lamp circuit in the second atmosphere lamp group; the atmosphere lamp driving circuit of the Red lamp circuit in the first atmosphere lamp group comprises an impedance triode Q20, the base of the impedance triode Q20 is connected with one end of a resistor R66, the other end of the resistor R66 is grounded through a capacitor C116, the other end of the resistor R60 is also connected with a Red atmosphere lamp control output end Red ctr of the automobile ceiling lamp MCU, the base of the impedance triode Q20 is grounded through a capacitor C81, the emitter of the impedance triode Q20 is grounded, the collector of the impedance triode Q20 is respectively connected with a collector of a PNP triode Q21 and a base of a PNP triode Q24 through a resistor R46, the emitter of the triode Q21 is connected with the VS output end of the power supply module, the base of the triode Q21 is connected with the emitter of the triode Q24, a resistor R48 is connected between the emitter and the base of the triode Q21, the collector of the triode Q24 is connected with one end of a resistor R50, the other end of the resistor R50 is grounded through a capacitor C76, and the other end of the resistor R76 is used as a driving output end AL R1+ of an atmosphere lamp driving circuit of a red lamp circuit in the first atmosphere lamp group; the atmosphere lamp driving circuit of the Red lamp circuit in the second atmosphere lamp group comprises an impedance triode Q36, the base of the impedance triode Q36 is connected with one end of a resistor R66, the other end of the resistor R66 is grounded through a capacitor C116, the other end of the resistor R60 is also connected with a Red atmosphere lamp control output end Red ctr of the automobile ceiling lamp MCU, the base of the impedance triode Q36 is grounded through a capacitor C117, the emitter of the impedance triode Q36 is grounded, the collector of the impedance triode Q36 is respectively connected with a collector of a PNP triode Q37 and a base of a PNP triode Q39 through a resistor R65, the emitter of the triode Q37 is connected with the VS output end of the power module, the base of the triode Q37 is connected with the emitter of the triode Q39, a resistor R67 is connected between the emitter of the triode Q37 and the base, the collector of the triode Q39 is connected with one end of the resistor R81, the other end of the resistor R81 is grounded through a capacitor C115, and the other end of the resistor R81 is used as a driving output end AL R2+ of an atmosphere lamp driving circuit of a red lamp circuit in the second atmosphere lamp group; the atmosphere lamp driving circuit of the Blue lamp circuit in the first atmosphere lamp group comprises an impedance triode Q26, the base of the impedance triode Q26 is connected with one end of a resistor R95, the other end of the resistor R95 is grounded through a capacitor C120, the other end of the resistor R95 is also connected with the Blue atmosphere lamp control output end Blue ctr of the automobile dome lamp MCU, the base of the impedance triode Q26 is grounded through a capacitor C89, the emitter of the impedance triode Q26 is grounded, the collector of the impedance triode Q26 is respectively connected with a collector of a PNP triode Q27 and a base of a PNP triode Q28 through a resistor R52, the emitter of the triode Q27 is connected with the VS output end of the power supply module, the base of the triode Q27 is connected with the emitter of the triode Q28, a resistor R63 is connected between the emitter and the base of the triode Q27, the collector of the triode Q28 is connected with one end of a resistor R64, the other end of the resistor R64 is grounded through a capacitor C99, and the other end of the resistor R64 is used as a driving output end AL B1+ of an atmosphere lamp driving circuit of a blue lamp circuit in the first atmosphere lamp group; the atmosphere lamp driving circuit of the Blue lamp circuit in the second atmosphere lamp group comprises an impedance triode Q40, the base of the impedance triode Q40 is connected with one end of a resistor R95, the other end of the resistor R95 is grounded through a capacitor C120, the other end of the resistor R95 is also connected with a Blue atmosphere lamp control output end Blue ctr of the automobile dome lamp MCU, the base of the impedance triode Q40 is grounded through a capacitor C121, the emitter of the impedance triode Q40 is grounded, the collector of the impedance triode Q40 is respectively connected with a collector of a PNP triode Q42 and a base of a PNP triode Q43 through a resistor R87, the emitter of the triode Q42 is connected with the VS output end of the power module, the base of the triode Q42 is connected with the emitter of the triode Q43, a resistor R99 is connected between the emitter of the triode Q42 and the base, the collector of the triode Q43 is connected with one end of a resistor R102, the other end of the resistor R102 is connected to ground via a capacitor C119, and the other end of the resistor R102 is used as the driving output terminal AL B2+ of the atmosphere lamp driving circuit of the blue lamp circuit in the second atmosphere lamp group.
Two sets of atmosphere lamps are arranged in same fluorescent tube simultaneously, improve the atmosphere lamp reliability, even the lamp breaks down and also can show, through adjusting light colour and voltage, can adjust the atmosphere lamp colour.
Still further, the chip model of car dome lamp MCU is: ATSAMHA1, wherein a PWM regulator is arranged in the automobile ceiling lamp MCU.
The chip has multiple ports, can be connected with different functional modules, is internally provided with a pwm regulator and is used for regulating the effective voltage of various lamps, so that the brightness of various lamps is regulated, and the colors of the lamps are regulated by combining various colors.
In order to centralize a connecting circuit between the automobile top lamp MCU and the automobile ECU, a main connector is connected on the automobile top lamp MCU.
The utility model has the advantages that: the utility model provides a set up integrates car roof integrated system integrates reading lamp indicating module, alarm module, button backlight indicating module, safety belt and air bag indicating module, atmosphere lamp module and is in the same place, can the integrated overall arrangement when design production, and scale-up processing, installation form one set of equipment, and integral erection is on the car, wholly takes off during the maintenance, can not disturb between the circuit. The wiring is standardized, and the fault point is easy to find.
Drawings
Fig. 1 is a block diagram of the system architecture of the present invention;
FIG. 2 is a schematic view of the pin connection of the MCU chip of the car dome lamp of the present invention;
FIG. 3 is a power conditioning module circuit diagram;
FIG. 4 is a circuit diagram of a power conversion module;
FIG. 5 is a circuit diagram of a power driven output module;
FIG. 6 is a circuit diagram of a front left reading light driver display;
FIG. 7 is a circuit diagram of a front row right reading lamp driving display;
FIG. 8 is a rear left read drive circuit diagram;
FIG. 9 is a rear right read drive circuit diagram;
FIG. 10 is a circuit diagram of a rear left reading light illumination prompt;
FIG. 11 is a circuit diagram of a rear right reading lamp lighting prompt;
FIG. 12 is a detailed circuit diagram of the SOS switch circuit and the BCALL switch circuit;
FIG. 13 is a detailed circuit diagram of an SOS display lamp circuit and a BCALL display lamp circuit;
FIG. 14 is a key backlight circuit diagram;
FIG. 15 is a specific circuit diagram of an airbag backlight indicating driving circuit and an airbag backlight indicating circuit;
FIG. 16 is a detailed circuit diagram of an airbag disable indication driver circuit, an airbag disable indication circuit, and an airbag disable acquisition circuit;
FIG. 17 is a detailed diagram of an airbag activation indication driver circuit, an airbag activation indication circuit, and an airbag activation acquisition circuit;
fig. 18 is a detailed circuit diagram of the seat belt reminder driving circuit, the seat belt reminder indicating circuit, and the seat belt reminder collecting circuit;
FIG. 19 is a circuit diagram of an ambience lamp module.
Detailed Description
The following provides a more detailed description of the embodiments and the operation of the present invention with reference to the accompanying drawings.
As can be seen from fig. 1, the multifunctional circuit based on the automobile dome lamp comprises an automobile dome lamp MCU, wherein the automobile dome lamp MCU is connected with an automobile ECU, and a power module is connected to the automobile dome lamp MCU; the control output end of the automobile ceiling lamp MCU is connected with a reading lamp indicating module, an alarm module, a key backlight indicating module, a safety belt and safety airbag indicating module and an atmosphere lamp module; the power module supplies power to the reading lamp indicating module, the alarm module, the key backlight indicating module, the safety belt and safety airbag indicating module and the atmosphere lamp module.
In this embodiment, a capacitive button circuit is adopted, and a capacitive acquisition module is arranged on the car dome lamp MCU and used for acquiring a button signal.
In this embodiment, as can be seen from fig. 2, the chip type of the car dome lamp MCU is: ATSAMHA1, wherein a PWM regulator is arranged in the automobile ceiling lamp MCU. And the automobile ceiling lamp MCU is connected with a main connector.
As can be seen in fig. 3 to 5, the power supply module includes a power supply adjusting module, a power supply converting module, and a power supply driving output module;
the power end of the power supply adjusting module acquires a power supply of an automobile, and the VS output end of the power supply adjusting module is connected with the power supply driving output module and the power supply conversion module and supplies power to the reading lamp indicating module, the alarm module, the key backlight indicating module, the safety belt and the safety airbag indicating module through the VS output end; the VS-MCU output end of the power supply adjusting module supplies power to the automobile ceiling lamp MCU in a sleep mode;
referring to fig. 3, a diode D1 is disposed in the Power supply regulating module, an anode of the diode D1 is used as a Power end of the Power supply regulating module, a cathode of the diode D1 is connected to one end of a bidirectional voltage stabilizing diode TVS1, one end of the bidirectional voltage stabilizing diode TVS1 is used as a VS output end of the Power supply regulating module, an anode of the diode D1 is further grounded through a capacitor C27 and a capacitor C28, the other end of the bidirectional voltage stabilizing diode TVS1 is grounded, a cathode of the diode D1 is further connected to a positive electrode of a polar capacitor CE1, a negative electrode of the polar capacitor CE1 is grounded, a cathode of the diode D1 is further connected to one end of an inductor FB9, the other end of the inductor FB9 is used as a VS MCU output end, one end of the inductor FB9 is grounded through a capacitor C25, and the other end of the inductor;
referring to fig. 4, the power conversion module is connected to a sleep mode control end of the car dome light MCU, and a 12V AD output end of the power conversion module supplies power to the car dome light MCU in a wake-up mode; the power conversion module comprises a PNP triode Q1, an emitter of the triode Q1 is used as a VS input end of the power conversion module, a resistor R15 is further connected between a base and an emitter of the triode Q1, the base of the triode Q1 is further connected with a collector of a resistance triode Q5 through a resistor R20, the base of the resistance triode Q5 is used as a Sleep _ Mode ctr input end of the power conversion module, the base of the resistance triode Q5 is further grounded through a capacitor C65, the collector of the triode Q1 is connected with one end of the resistor R5 through a resistor R6, the other end of the resistor R5 is used as a 12V AD output end, the other end of the resistor R5 is further grounded through a capacitor C53, one end of the resistor R5 is grounded through a capacitor C6, and one end of the resistor R5 is further grounded through a resistor R10.
Referring to fig. 5, the power driving output module is connected to a sleep mode control end of the MCU, and an RRL output end of the power driving output module is used to supply power to a rear row reading lamp of the vehicle; the power supply driving output module comprises a PNP triode Q23 and an impedance triode Q14, wherein an emitter of the triode Q23 is connected with one end of a resistor R32, the other end of the resistor R32 is used as a VS input end, one end of the resistor R32 is grounded through a capacitor C87, a resistor R19 is connected between the emitter of the triode Q23 and a base electrode of the triode Q23, a collector of the triode Q23 is connected with one end of a piezoresistor FS1, and the other end of the piezoresistor FS1 is used as an RRL output end; the base electrode of the triode Q23 is connected with the collector electrode of the impedance triode Q14 through a resistor R116, the base electrode of the impedance triode Q14 is used as the Sleep _ Mode ctr input end of the power supply driving output module, and the emitting electrode of the impedance triode Q14 is grounded.
In this embodiment, as can be seen from fig. 6 to 11, the reading lamp indication module includes a front row left reading lamp driving display circuit, a front row right reading lamp driving display circuit, a rear row left reading lamp driving circuit, a rear row left reading lamp lighting prompt circuit, a rear row right reading lamp driving circuit, and a rear row right reading lamp lighting prompt circuit;
the front row left reading lamp control output end of the automobile ceiling lamp MCU is connected with a front row left reading lamp driving display circuit, the front row right reading lamp control output end of the automobile ceiling lamp MCU is connected with a front row right reading lamp driving display circuit, the rear row left reading lamp control output end of the automobile ceiling lamp MCU is connected with a rear row left reading drive circuit, the rear row left reading lamp lighting feedback end of the automobile ceiling lamp MCU is connected with a rear row left reading lamp lighting prompting circuit, the rear row right reading lamp control output end of the automobile ceiling lamp MCU is connected with a rear row right reading drive circuit, and the rear row right reading lamp lighting feedback end of the automobile ceiling lamp MCU is connected with a rear row right reading lamp lighting prompting circuit;
referring to fig. 6, the front row left reading lamp driving display circuit includes an NPN transistor Q3, a collector of the NPN transistor Q3 is connected to one end of a resistor R14, one end of the resistor R14 is further grounded via a capacitor C23, and the other end of the resistor R14 is used for connecting a front row left reading lamp control output end of the car headlight MCU; a capacitor C10 is connected between a collector and an emitter of the NPN triode Q3, an emitter of the NPN triode Q3 is grounded, a collector of the NPN triode Q3 is also connected with a base of an NPN triode Q2, an emitter of the NPN triode Q2 is grounded through a resistor R17, a base of the NPN triode Q3 is connected with an emitter of the NPN triode Q2, a collector of the NPN triode Q2 is connected with a cathode of the LED1, an anode of the LED1 is connected with a VS output end of the power module through a parallel resistor consisting of the resistor R17, the resistor R9 and the resistor R11, and two ends of the LED1 are also connected with a capacitor C7 in parallel; the capacitance of the capacitor C23 is 10 nF;
referring to fig. 7, the front row right reading lamp driving display circuit includes an NPN transistor Q6, a collector of the NPN transistor Q6 is connected to one end of a resistor R13, one end of the resistor R13 is further grounded via a capacitor C22, and the other end of the resistor R13 is used for connecting a front row right reading lamp control output end of the car dome lamp MCU; a capacitor C11 is connected between a collector and an emitter of the NPN triode Q6, an emitter of the NPN triode Q6 is grounded, a collector of the NPN triode Q6 is also connected with a base of an NPN triode Q4, an emitter of the NPN triode Q4 is grounded through a resistor R43, a base of the NPN triode Q6 is connected with an emitter of the NPN triode Q4, a collector of the NPN triode Q4 is connected with a cathode of the LED17, an anode of the LED17 is connected with a VS output end of the power module through a parallel resistor consisting of a resistor R1, a resistor R2 and a resistor R3, and a capacitor C1 and a resistor R8 are connected in parallel at two ends of the LED 17; the capacitance of the capacitor C22 is 10 nF;
referring to fig. 8, the rear row left reading driving circuit includes a resistor triode Q32, a collector of the resistor triode Q32 is connected with one end of a resistor R28, the other end of the resistor R28 is connected with a rear row left reading lamp control output end of the car dome lamp MCU, an emitter of the resistor triode Q32 is grounded, a base of the resistor triode Q32 is connected with one end of a resistor R12, the other end of the resistor R12 is grounded through a capacitor C15, and the other end of the resistor R12 is used as a driving end of the rear row left reading driving circuit; the capacitance of the capacitor C15 is 10nF, and the working voltage is 50V; referring to fig. 10, the lighting prompt circuit of the rear row left reading lamp includes a diode D2, a cathode of the diode D2 serves as a collecting end of the lighting prompt circuit of the rear row left reading lamp, a cathode of the diode D2 is grounded via a capacitor C46, an anode of the diode D2 is grounded via a capacitor C44, an anode of the diode D2 is connected to the power supply VCC 3V3 via a resistor R78, an anode of the diode D2 is connected to one end of a resistor R79, the other end of the resistor R79 is grounded via a capacitor C45, and the other end of the resistor R79 is connected to a lighting feedback end of the rear row left reading lamp of the car overhead light MCU;
referring to fig. 9, the rear-row right reading driving circuit includes a resistor transistor Q31, a collector of the resistor transistor Q31 is connected to one end of a resistor R27, the other end of the resistor R27 is connected to a rear-row right reading lamp control output end of the car dome lamp MCU, an emitter of the resistor transistor Q31 is grounded, a base of the resistor transistor Q31 is connected to one end of a resistor R4, the other end of the resistor R4 is grounded via a capacitor C14, and the other end of the resistor R4 serves as a driving end of the rear-row right reading driving circuit; the capacitance of the capacitor C14 is 10nF, and the working voltage is 50V; referring to fig. 11, the lighting prompt circuit of the back row right reading lamp includes a diode D4, a cathode of the diode D4 serves as a collecting end of the lighting prompt circuit of the back row right reading lamp, a cathode of the diode D4 is grounded via a capacitor C60, an anode of the diode D4 is grounded via a capacitor C61, an anode of the diode D4 is connected to the power supply VCC 3V3 via a resistor R88, an anode of the diode D4 is connected to one end of the resistor R92, the other end of the resistor R92 is grounded via a capacitor C59, and the other end of the resistor R92 is connected to a lighting feedback end of the back row right reading lamp of the car dome lamp MCU.
Referring to fig. 12-13, the alarm module includes an SOS switch circuit, an SOS display lamp circuit, a bclal switch circuit, and a bclal display lamp circuit; an SOS control output end SOS output ctr of the automobile ceiling lamp MCU is connected with the SOS switch circuit, a switch signal output end of the SOS switch circuit is connected with the automobile ECU, and the automobile ECU is connected with the SOS display lamp circuit; a BCALL control output end BCALL ctr of the automobile ceiling lamp MCU is connected with a BCALL switch circuit, a switch signal output end of the BCALL switch circuit is connected with the automobile ECU, and the automobile ECU is connected with the BCALL display lamp circuit;
referring to fig. 12, the SOS switch circuit includes a resistor R114, one end of the resistor R114 is connected to the SOS control output end, one end of the resistor R114 is grounded through a capacitor C125, the other end of the resistor R114 is connected to the base of an eighth switching tube Q8, the eighth switching tube Q8 is an NPN-type band-stop transistor Q8, the emitter of the band-stop transistor Q8 is grounded, the collector of the band-stop transistor Q8 is connected to one end of a resistor R73, and the other end of the resistor R73 is used as a switching signal output end of the SOS switch circuit; the collector electrode of the band elimination triode Q8 is grounded after passing through a capacitor C101; the BCALL switch circuit comprises a resistor R122, one end of the resistor R122 is connected with a BCALL control output end, the other end of the resistor R122 is grounded after passing through a capacitor C126, and the other end of the resistor R122 is grounded after passing through a capacitor C79; the other end of the resistor R122 is connected with the base electrode of a ninth switching tube Q9, the ninth switching tube Q9 is an NPN type triode Q9 with a resistance, the emitting electrode of the triode Q9 with the resistance is grounded, the collector electrode of the triode Q9 with the resistance is connected with one end of a resistor R70, the other end of the resistor R70 is used as the switching signal output end of the BCALL switching circuit, and the collector electrode of the triode Q9 with the resistance is grounded after passing through a capacitor C98; the other end of the resistor R70 is connected with one end of a protection diode ESD2, and the other end of the protection diode ESD2 is connected with the other end of the resistor R73; the other end of the resistor R70 is grounded through a capacitor C80; the other end of the resistor R70 is connected with the other end of the resistor R73;
referring to fig. 13, the SOS display lamp circuit includes a diode D5, an anode of the diode D5 is connected to an SOS alarm display terminal of the vehicle ECU, an anode of the diode D5 is grounded through a capacitor C72, a cathode of the diode D5 is connected in parallel through a parallel resistor formed by a resistor R82 and a resistor R138 to an anode of a light emitting diode LED7, and a cathode of the light emitting diode LED7 is grounded; two ends of the LED7 of the light emitting diode are connected with a resistor R83 and a capacitor C66 in parallel.
Referring to fig. 13, the BCALL display lamp circuit includes a diode D7, an anode of the diode D7 is connected to a BCALL alarm display terminal of the car ECU, an anode of the diode D7 is grounded through a capacitor C50, a cathode of the diode D7 is connected to an anode of an LED8 of a light emitting diode through a resistor R86, and a cathode of the LED8 of the light emitting diode is grounded; and a resistor R42 and a capacitor C77 are connected in parallel at two ends of the LED8 of the light-emitting diode.
In this embodiment, the key backlight indicating module includes a key backlight circuit, see fig. 14, where the key backlight circuit includes a left reading lamp key backlight circuit, a reading lamp full-bright touch key backlight circuit, and a right reading lamp key backlight circuit;
the left reading lamp key backlight circuit comprises a light emitting diode LED5, and the anode of the light emitting diode LED6 is connected with the VS output end of the power supply module through a resistor R49 and a resistor R51 which are connected in parallel; the VS output end is grounded through a capacitor C42; the cathode of the light emitting diode LED5 is connected with the collector of the NPN resistor transistor Q22, the base of the NPN resistor transistor Q22 is connected with one end of a resistor R18, the other end of the resistor R18 is connected with the left reading lamp key background lamp control output end ILL _ LH _ ctr of the automobile ceiling lamp MCU, the common end of the base of the resistor R18 and the base of the NPN resistor transistor Q22 is grounded through a capacitor C63, the other end of the resistor R18 is grounded through a capacitor C21, the emitter of the NPN resistor transistor Q22 is grounded, and the collector of the NPN resistor transistor Q22 is connected with the cathode of the light emitting diode LED; a capacitor C24 and a resistor R109 are connected in parallel with two ends of the light-emitting diode LED 5; the reading lamp full-bright touch key background lamp circuit comprises a light emitting diode LED6 and an NPN resistor transistor Q25, wherein the anode of the light emitting diode LED6 is connected with the VS output end of the power supply module through a resistor R58 and a resistor R62 which are connected in parallel; the VS output end of the power supply module is grounded through a capacitor C42; the base electrode of the NPN resistor transistor Q25 is connected with one end of a resistor R21, the other end of the resistor R21 is connected with a reading lamp full-bright key backlight control output end ILL _ door _ ctr of the automobile ceiling lamp MCU, the common end of the base electrodes of the resistor R21 and the NPN resistor transistor Q22 is grounded through a capacitor C64, the other end of the resistor R21 is grounded through a capacitor C29, the emitter electrode of the NPN resistor transistor Q25 is grounded, and the collector electrode of the NPN resistor transistor Q25 is connected with the cathode of a light-emitting diode LED 6; and a capacitor C31 and a resistor R110 are connected in parallel with two ends of the light-emitting diode LED 6. The right reading lamp key backlight circuit comprises a light-emitting diode LED2, the anode of the light-emitting diode LED2 is connected with one end of a third voltage-dividing resistor formed by connecting a resistor R40 and a resistor R41 in parallel, and the other end of the third voltage-dividing resistor formed by connecting a resistor R40 and a resistor R41 in parallel is connected with the collector of a PNP triode Q10; an emitter of a PNP triode Q10 is connected with a VS output end of the power supply module, a base of the PNP triode Q10 is connected with a collector of a resistor transistor Q18 through a resistor R117, an emitter of the resistor transistor Q18 is grounded, a base of the resistor transistor Q18 is connected with a right reading lamp key background lamp control output end SWDCLK & ILL _ RH _ ctr of the automobile ceiling lamp MCU through a resistor R16, and a collector of the resistor transistor Q18 is connected with the VS output end of the power supply module through a resistor R115; the anode of the light emitting diode LED2 is connected with the emitter of a PNP triode Q33, the collector of the PNP triode Q33 is grounded, and the base of the PNP triode Q33 is grounded through a resistor R118 and a capacitor C19; and a resistor R119 is arranged between the base electrode and the emitter electrode of the PNP triode Q33.
In this embodiment, the safety belt and airbag indicating module includes an airbag backlight indicating driving circuit, an airbag disabling indicating driving circuit, an airbag enabling indicating driving circuit, and a safety belt reminding driving circuit;
referring to fig. 15, a signal input end of the airbag backlight indicating driving circuit is used for being connected with a control output end of an airbag backlight of an automobile ceiling lamp MCU, and a driving output end of the airbag backlight indicating driving circuit is connected with the airbag backlight indicating circuit;
referring to fig. 16, a signal input end of the airbag disable indication driving circuit is used for being connected with an airbag disable control output end of an automobile ceiling light MCU, a driving output end of the airbag disable indication driving circuit is connected with the airbag disable indication circuit, an airbag disable self-diagnosis point is arranged between the airbag disable indication driving circuit and the airbag disable indication circuit, and the airbag disable self-diagnosis point is used for being connected with an airbag disable diagnosis collecting end of the automobile ceiling light MCU after passing through an airbag disable collecting circuit;
referring to fig. 17, a signal input end of the airbag starting indication driving circuit is used for being connected with an airbag starting control output end of an automobile ceiling lamp MCU, a driving output end of the airbag starting indication driving circuit is connected with the airbag starting indication circuit, an airbag starting self-diagnosis point is arranged between the airbag starting indication driving circuit and the airbag starting indication circuit, and the airbag starting self-diagnosis point is used for being connected with an airbag starting diagnosis acquisition end of the automobile ceiling lamp MCU after passing through an airbag starting acquisition circuit;
referring to fig. 18, a signal input end of the seat belt reminding driving circuit is used for being connected with a seat belt control output end of the car dome light MCU, a driving output end of the seat belt reminding driving circuit is connected with the seat belt reminding indicating circuit, a seat belt reminding self-diagnosis point is arranged between the seat belt reminding driving circuit and the seat belt reminding indicating circuit, and the seat belt reminding self-diagnosis point is connected with a seat belt reminding diagnosis collecting end of the car dome light MCU after passing through the seat belt reminding collecting circuit.
Referring to fig. 15, the airbag backlight indicating driving circuit includes a resistor R104, one end of the resistor R104 is used as a signal input end of the airbag backlight indicating driving circuit, one end of the resistor R104 is also grounded through a capacitor C82, the other end of the resistor R104 is connected with the base of a resistor triode Q13, the emitter of the resistor triode Q13 is grounded, the collector of the resistor triode Q13 is connected with the base of a PNP triode Q38 through a resistor R89, the common terminal of the PNP transistor Q38 and the resistor R89 is also connected to the VS output terminal of the power module via the resistor R84, the emitter of the PNP triode Q38 is connected with the VS output end of the power supply module, the collector of the PNP triode Q38 is connected with one end of a resistor R29, the other end of the resistor R29 is grounded through a resistor R38 and a capacitor C35 respectively, and the other end of the resistor R29 is also used as a driving output end of the airbag backlight indicating and driving circuit; the airbag background light indicating circuit comprises a light emitting diode LED9, a light emitting diode LED10 and a light emitting diode LED11 which are sequentially connected in series, wherein two ends of the light emitting diode LED9 are connected with a capacitor C97 in parallel, two ends of the light emitting diode LED10 are connected with a capacitor C118 in parallel, two ends of a light emitting diode LED11 are connected with a capacitor C56 in parallel, the cathode of the light emitting diode LED11 is grounded, and the anode of the light emitting diode LED9 is connected with the other end of the resistor R29;
referring to fig. 16, the airbag disable indication driving circuit includes a resistor R113, one end of the resistor R113 is used as a signal input end of the airbag disable indication driving circuit, one end of the resistor R113 is further grounded through a capacitor C74, the other end of the resistor R113 is grounded through a capacitor C106, the other end of the resistor R113 is connected to a base of a resistor transistor Q19, an emitter of the resistor transistor Q19 is grounded, a collector of the resistor transistor Q19 is connected to a base of a PNP transistor Q41 through a resistor R105, and the base of the PNP transistor Q41 is further connected to a VS output end of the power module through a resistor R90; the emitter of the PNP triode Q41 is connected with the VS output end of the power supply module, the collector of the PNP triode Q41 is connected with one end of a resistor R93 and a resistor 94 which are connected in parallel, and the other end of the PNP triode Q41 is used as the driving output end of the airbag forbidding indication driving circuit; the airbag forbidding indicating circuit comprises a light emitting diode LED12, a resistor R91 and a capacitor C55 are connected in parallel at two ends of a light emitting diode LED12, the anode of the light emitting diode LED12 is connected with the driving output end of the airbag forbidding indicating driving circuit, and the cathode of the light emitting diode LED12 is grounded; the airbag forbidden acquisition circuit comprises a resistor R31, one end of the resistor R31 is connected with the airbag forbidden self-diagnosis point, the other end of the resistor R31 is grounded through a resistor R68 and a capacitor C94, the other end of the resistor R31 is grounded through a resistor R68 and a capacitor C93, the other end of the resistor R31 is grounded through a capacitor C3, the resistor R31 is grounded through a resistor R74, and the common end of the resistor R68 and the capacitor C94 is used for being connected with the airbag forbidden diagnosis acquisition end of the automobile overhead light MCU;
referring to fig. 17, the airbag activation indication driving circuit includes a resistor R124, one end of the resistor R124 serves as a signal input end of the airbag activation indication driving circuit, one end of the resistor R124 is further grounded through a capacitor C84, the other end of the resistor R124 is grounded through a capacitor C109, the other end of the resistor R124 is connected to a base of a resistor transistor Q16, an emitter of the resistor transistor Q16 is grounded, a collector of the resistor transistor Q16 is connected to a base of a PNP transistor Q44 through a resistor R121, and the base of the PNP transistor Q44 is further connected to a VS output end of the power module through a resistor R112; the emitter of the PNP triode Q44 is connected with the VS output end of the power supply module, the collector of the PNP triode Q44 is connected with one end of a resistor R96 and one end of a resistor 97 which are connected in parallel, and the other end of the PNP triode Q44 is used as the driving output end of the airbag starting indication driving circuit; the airbag starting indicating circuit comprises a light emitting diode LED13, a resistor R98 and a capacitor C58 are connected in parallel at two ends of a light emitting diode LED13, the anode of the light emitting diode LED13 is connected with the driving output end of the airbag starting indicating driving circuit, and the cathode of the light emitting diode LED13 is grounded; the airbag starting acquisition circuit comprises a resistor R76, one end of the resistor R76 is connected with the airbag starting self-diagnosis point, the other end of the resistor R76 is grounded through a resistor R77 and a capacitor C113, the other end of the resistor R76 is grounded through a resistor R77 and a capacitor C114, the other end of the resistor R76 is grounded through a capacitor C49, the resistor R76 is grounded through a resistor R80, and the common end of the resistor R77 and the capacitor C114 is used for being connected with the airbag starting diagnosis acquisition end of the automobile ceiling lamp MCU;
referring to fig. 18, the seat belt reminder driving circuit includes a resistor R126, one end of the resistor R126 serves as a signal input end of the seat belt reminder driving circuit, one end of the resistor R126 is further grounded through a capacitor C83, the other end of the resistor R126 is grounded through a capacitor C108, the other end of the resistor R126 is connected to the base of a resistor transistor Q15, the emitter of the resistor transistor Q15 is grounded, the collector of the resistor transistor Q15 is connected to the base of a PNP transistor Q45 through a resistor R125, and the base of the PNP transistor Q45 is further connected to the VS output end of the power module through a resistor R123; an emitting electrode of the PNP triode Q45 is connected with a VS output end of the power module, a collector electrode of the PNP triode Q45 is connected with one end of a resistor R101, and the other end of the PNP triode Q45 is used as a driving output end of the safety belt reminding driving circuit; the safety belt reminding indicating circuit comprises a light emitting diode LED14, a light emitting diode LED15 and a light emitting diode LED16 which are sequentially connected in series; a capacitor C68 is connected in parallel with two ends of the light emitting diode LED14, a capacitor C104 is connected in parallel with two ends of the light emitting diode LED15, a capacitor C105 is connected in parallel with two ends of the light emitting diode LED16, the anode of the light emitting diode LED14 is connected with the safety belt reminding self-diagnosis point, the cathode of the light emitting diode LED16 is grounded, and the anode of the light emitting diode LED14 is grounded through the cathode of the light emitting diode LED16 after passing through a resistor R106; the safety belt reminding acquisition circuit comprises a resistor R71, one end of the resistor R71 is connected with the safety belt reminding self-diagnosis point, the other end of the resistor R71 is grounded through a resistor R72 and a capacitor C112, the other end of the resistor R71 is grounded through a resistor R72 and a capacitor C111, the other end of the resistor R71 is grounded through a capacitor C38, and the other end of the resistor R71 is grounded through a resistor R75; and the common end of the resistor R72 and the capacitor C111 is used for being connected with a safety belt reminding diagnosis acquisition end of the automobile ceiling lamp MCU.
Referring to fig. 19, the ambience lamp module comprises a first ambience lamp set, a second ambience lamp set; each group of atmosphere lamp groups is provided with three branch circuits: a green light circuit, a red light circuit and a blue light circuit; each branch circuit is provided with an atmosphere lamp driving circuit and an atmosphere lamp display circuit which are sequentially connected with the automobile ceiling lamp MCU; referring to fig. 19, the atmosphere lamp driving circuit of the Green lamp circuit in the first atmosphere lamp group includes an impedance triode Q7, the base of the impedance triode Q7 and one end of a resistor R60 are connected to the other end of the resistor R60 through a capacitor C103 and grounded, the other end of the resistor R60 is further connected to the Green atmosphere lamp control output Green ctr of the car headlight MCU, the base of the impedance triode Q7 is grounded through a capacitor C67, the emitter of the impedance triode Q7 is grounded, the collector of the impedance triode Q7 is connected to the collector of a PNP triode Q12 and the base of a PNP triode Q17 through a resistor R30, the emitter of the triode Q12 is connected to the VS output terminal of the power module, the base of the triode Q12 is connected to the emitter of the triode Q17, a resistor R39 is connected between the emitter and the base of the triode Q12, the collector of the triode Q17 is connected to one end of a resistor R44, the other end of the resistor R44 is grounded through a capacitor C41, and the other end of the resistor R44 is used as a driving output end AL G1+ of an atmosphere lamp driving circuit of a green lamp circuit in the first atmosphere lamp group; the atmosphere lamp driving circuit of the Green lamp circuit in the second atmosphere lamp group comprises an impedance triode Q29, the base of the impedance triode Q29 and one end of a resistor R60 are connected, the other end of the resistor R60 is grounded through a capacitor C103, the other end of the resistor R60 is also connected with a Green atmosphere lamp control output Green ctr of the car headlight MCU, the base of the impedance triode Q29 is grounded through a capacitor C110, the emitter of the impedance triode Q29 is grounded, the collector of the impedance triode Q29 is respectively connected with a collector of a PNP triode Q30 and a base of a PNP triode Q35 through a resistor R59, the emitter of the triode Q30 is connected with the VS output end of the power module, the base of the triode Q30 is connected with the emitter of the triode Q35, a resistor R63 is connected between the emitter and the base of the triode Q30, the collector of the triode Q35 is connected with one end of a resistor R64, and the other end of the resistor R64 is grounded through a capacitor C99, the other end of the resistor R64 is used as a driving output end AL G2+ of an atmosphere lamp driving circuit of a green lamp circuit in the second atmosphere lamp group; the atmosphere lamp driving circuit of the Red lamp circuit in the first atmosphere lamp group comprises an impedance triode Q20, the base of the impedance triode Q20 is connected with one end of a resistor R66, the other end of the resistor R66 is grounded through a capacitor C116, the other end of the resistor R60 is also connected with a Red atmosphere lamp control output end Red ctr of the automobile ceiling lamp MCU, the base of the impedance triode Q20 is grounded through a capacitor C81, the emitter of the impedance triode Q20 is grounded, the collector of the impedance triode Q20 is respectively connected with a collector of a PNP triode Q21 and a base of a PNP triode Q24 through a resistor R46, the emitter of the triode Q21 is connected with the VS output end of the power supply module, the base of the triode Q21 is connected with the emitter of the triode Q24, a resistor R48 is connected between the emitter and the base of the triode Q21, the collector of the triode Q24 is connected with one end of a resistor R50, the other end of the resistor R50 is grounded via a capacitor C76, and the other end of the resistor R76 is used as a driving output terminal AL R1+ of the atmosphere lamp driving circuit of the red lamp circuit in the first atmosphere lamp group. The atmosphere lamp driving circuit of the Red lamp circuit in the second atmosphere lamp group comprises an impedance triode Q36, the base of the impedance triode Q36 is connected with one end of a resistor R66, the other end of the resistor R66 is grounded through a capacitor C116, the other end of the resistor R60 is also connected with a Red atmosphere lamp control output end Red ctr of the automobile ceiling lamp MCU, the base of the impedance triode Q36 is grounded through a capacitor C117, the emitter of the impedance triode Q36 is grounded, the collector of the impedance triode Q36 is respectively connected with a collector of a PNP triode Q37 and a base of a PNP triode Q39 through a resistor R65, the emitter of the triode Q37 is connected with the VS output end of the power module, the base of the triode Q37 is connected with the emitter of the triode Q39, a resistor R67 is connected between the emitter of the triode Q37 and the base, the collector of the triode Q39 is connected with one end of the resistor R81, the other end of the resistor R81 is grounded via a capacitor C115, and the other end of the resistor R81 is used as a driving output terminal AL R2+ of the atmosphere lamp driving circuit of the red lamp circuit in the second atmosphere lamp group. The atmosphere lamp driving circuit of the Blue lamp circuit in the first atmosphere lamp group comprises an impedance triode Q26, the base of the impedance triode Q26 is connected with one end of a resistor R95, the other end of the resistor R95 is grounded through a capacitor C120, the other end of the resistor R95 is also connected with the Blue atmosphere lamp control output end Blue ctr of the automobile dome lamp MCU, the base of the impedance triode Q26 is grounded through a capacitor C89, the emitter of the impedance triode Q26 is grounded, the collector of the impedance triode Q26 is respectively connected with a collector of a PNP triode Q27 and a base of a PNP triode Q28 through a resistor R52, the emitter of the triode Q27 is connected with the VS output end of the power supply module, the base of the triode Q27 is connected with the emitter of the triode Q28, a resistor R63 is connected between the emitter and the base of the triode Q27, the collector of the triode Q28 is connected with one end of a resistor R64, the other end of the resistor R64 is grounded via a capacitor C99, and the other end of the resistor R64 is used as the driving output terminal AL B1+ of the atmosphere lamp driving circuit of the blue lamp circuit in the first atmosphere lamp set. The atmosphere lamp driving circuit of the Blue lamp circuit in the second atmosphere lamp group comprises an impedance triode Q40, the base of the impedance triode Q40 is connected with one end of a resistor R95, the other end of the resistor R95 is grounded through a capacitor C120, the other end of the resistor R95 is also connected with a Blue atmosphere lamp control output end Blue ctr of the automobile dome lamp MCU, the base of the impedance triode Q40 is grounded through a capacitor C121, the emitter of the impedance triode Q40 is grounded, the collector of the impedance triode Q40 is respectively connected with a collector of a PNP triode Q42 and a base of a PNP triode Q43 through a resistor R87, the emitter of the triode Q42 is connected with the VS output end of the power module, the base of the triode Q42 is connected with the emitter of the triode Q43, a resistor R99 is connected between the emitter of the triode Q42 and the base, the collector of the triode Q43 is connected with one end of a resistor R102, the other end of the resistor R102 is connected to ground via a capacitor C119, and the other end of the resistor R102 is used as the driving output terminal AL B2+ of the atmosphere lamp driving circuit of the blue lamp circuit in the second atmosphere lamp group.
In this embodiment, a main connector is connected to the car dome lamp MCU. Used for connecting a LIN bus, a POWER supply, etc.
It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a be based on car dome lamp multifunctional circuit, includes car dome lamp MCU, this car dome lamp MCU is connected its characterized in that with car ECU: the automobile ceiling lamp MCU is connected with a power supply module; the control output end of the automobile ceiling lamp MCU is connected with a reading lamp indicating module, an alarm module, a key backlight indicating module, a safety belt and safety airbag indicating module and an atmosphere lamp module; the power module supplies power to the reading lamp indicating module, the alarm module, the key backlight indicating module, the safety belt and safety airbag indicating module and the atmosphere lamp module.
2. The multifunctional circuit based on the automobile ceiling lamp as claimed in claim 1, wherein: the power supply module comprises a power supply adjusting module, a power supply conversion module and a power supply driving output module;
the power end of the power supply adjusting module acquires a power supply of an automobile, and the VS output end of the power supply adjusting module is connected with the power supply driving output module and the power supply conversion module and supplies power to the reading lamp indicating module, the alarm module, the key backlight indicating module, the safety belt and the safety airbag indicating module through the VS output end; the VS-MCU output end of the power supply adjusting module supplies power to the automobile ceiling lamp MCU in a sleep mode;
a diode D1 is arranged in the Power supply regulating module, the anode of the diode D1 is used as the Power end of the Power supply regulating module, the cathode of the diode D1 is connected with one end of a bidirectional voltage stabilizing diode TVS1, one end of the bidirectional voltage stabilizing diode TVS1 is used as the VS output end of the Power supply regulating module, the anode of the diode D1 is grounded through a capacitor C27 and a capacitor C28, the other end of the bidirectional voltage stabilizing diode TVS1 is grounded, the cathode of the diode D1 is also connected with the anode of a polar capacitor CE1, the cathode of the polar capacitor CE1 is grounded, the cathode of the diode D1 is also connected with one end of an inductor FB9, the other end of the inductor FB 2 is used as the VS MCU output end, one end of the inductor FB 8 is grounded through a capacitor C25, and the other end of the inductor FB9 is grounded through a;
the power supply conversion module is connected with a sleep mode control end of the automobile ceiling lamp MCU, and a 12V AD output end of the power supply conversion module supplies power to the automobile ceiling lamp MCU in a wake-up mode;
the power conversion module comprises a PNP triode Q1, an emitter of a triode Q1 is used as a VS input end of the power conversion module, a resistor R15 is further connected between a base and an emitter of the triode Q1, the base of the triode Q1 is further connected with a collector of a resistance triode Q5 through a resistor R20, the base of the resistance triode Q5 is used as a Sleep _ Mode ctr input end of the power conversion module, the base of the resistance triode Q5 is further grounded through a capacitor C65, the collector of the triode Q1 is connected with one end of the resistor R5 through a resistor R6, the other end of the resistor R5 is used as a 12V AD output end, the other end of the resistor R5 is further grounded through a capacitor C53, one end of the resistor R5 is grounded through a capacitor C6, and one end of the resistor R5 is further grounded through a resistor R10;
the power supply driving output module is connected with a sleep mode control end of the automobile ceiling lamp MCU, and an RRL output end of the power supply driving output module is used for supplying power to an automobile rear row reading lamp;
the power supply driving output module comprises a PNP triode Q23 and an impedance triode Q14, wherein an emitter of the triode Q23 is connected with one end of a resistor R32, the other end of the resistor R32 is used as a VS input end, one end of the resistor R32 is grounded through a capacitor C87, a resistor R19 is connected between the emitter of the triode Q23 and a base electrode of the triode Q23, a collector of the triode Q23 is connected with one end of a piezoresistor FS1, and the other end of the piezoresistor FS1 is used as an RRL output end; the base electrode of the triode Q23 is connected with the collector electrode of the impedance triode Q14 through a resistor R116, the base electrode of the impedance triode Q14 is used as the Sleep _ Mode ctr input end of the power supply driving output module, and the emitting electrode of the impedance triode Q14 is grounded.
3. The multifunctional circuit based on the automobile ceiling lamp as claimed in claim 1, wherein: the reading lamp indicating module comprises a front row left reading lamp driving display circuit, a front row right reading lamp driving display circuit, a rear row left reading driving circuit, a rear row left reading lamp lighting prompting circuit, a rear row right reading driving circuit and a rear row right reading lamp lighting prompting circuit;
the front row left reading lamp control output end of the automobile ceiling lamp MCU is connected with a front row left reading lamp driving display circuit, the front row right reading lamp control output end of the automobile ceiling lamp MCU is connected with a front row right reading lamp driving display circuit, the rear row left reading lamp control output end of the automobile ceiling lamp MCU is connected with a rear row left reading drive circuit, the rear row left reading lamp lighting feedback end of the automobile ceiling lamp MCU is connected with a rear row left reading lamp lighting prompting circuit, the rear row right reading lamp control output end of the automobile ceiling lamp MCU is connected with a rear row right reading drive circuit, and the rear row right reading lamp lighting feedback end of the automobile ceiling lamp MCU is connected with a rear row right reading lamp lighting prompting circuit;
the front row left reading lamp driving display circuit comprises an NPN triode Q3, a collector of the NPN triode Q3 is connected with one end of a resistor R14, one end of the resistor R14 is grounded through a capacitor C23, and the other end of the resistor R14 is used for being connected with a front row left reading lamp control output end of the automobile ceiling lamp MCU; a capacitor C10 is connected between a collector and an emitter of the NPN triode Q3, an emitter of the NPN triode Q3 is grounded, a collector of the NPN triode Q3 is also connected with a base of an NPN triode Q2, an emitter of the NPN triode Q2 is grounded through a resistor R17, a base of the NPN triode Q3 is connected with an emitter of the NPN triode Q2, a collector of the NPN triode Q2 is connected with a cathode of the LED1, an anode of the LED1 is connected with a VS output end of the power module through a parallel resistor consisting of the resistor R17, the resistor R9 and the resistor R11, and two ends of the LED1 are also connected with a capacitor C7 in parallel; the capacitance of the capacitor C23 is 10 nF;
the front row right reading lamp driving display circuit comprises an NPN triode Q6, a collector of the NPN triode Q6 is connected with one end of a resistor R13, one end of the resistor R13 is also grounded through a capacitor C22, and the other end of the resistor R13 is used for being connected with a front row right reading lamp control output end of the automobile ceiling lamp MCU; a capacitor C11 is connected between a collector and an emitter of the NPN triode Q6, an emitter of the NPN triode Q6 is grounded, a collector of the NPN triode Q6 is also connected with a base of an NPN triode Q4, an emitter of the NPN triode Q4 is grounded through a resistor R43, a base of the NPN triode Q6 is connected with an emitter of the NPN triode Q4, a collector of the NPN triode Q4 is connected with a cathode of the LED17, an anode of the LED17 is connected with a VS output end of the power module through a parallel resistor consisting of a resistor R1, a resistor R2 and a resistor R3, and a capacitor C1 and a resistor R8 are connected in parallel at two ends of the LED 17; the capacitance of the capacitor C22 is 10 nF;
the rear row left reading driving circuit comprises a resistor triode Q32, a collector of the resistor triode Q32 is connected with one end of a resistor R28, the other end of the resistor R28 is connected with a rear row left reading lamp control output end of the automobile ceiling lamp MCU, an emitter of the resistor triode Q32 is grounded, a base of the resistor triode Q32 is connected with one end of a resistor R12, the other end of the resistor R12 is grounded through a capacitor C15, and the other end of the resistor R12 is used as a driving end of the rear row left reading driving circuit; the capacitance of the capacitor C15 is 10 nF; the lighting prompt circuit of the rear row left reading lamp comprises a diode D2, the cathode of the diode D2 is used as the acquisition end of the lighting prompt circuit of the rear row left reading lamp, the cathode of the diode D2 is grounded through a capacitor C46, the anode of the diode D2 is grounded through a capacitor C44, the anode of the diode D2 is connected with a power supply VCC 3V3 through a resistor R78, the anode of the diode D2 is connected with one end of a resistor R79, the other end of the resistor R79 is grounded through a capacitor C45, and the other end of the resistor R79 is connected with the lighting feedback end of the rear row left reading lamp of the automobile ceiling lamp MCU;
the rear-row right reading driving circuit comprises a resistor triode Q31, a collector of the resistor triode Q31 is connected with one end of a resistor R27, the other end of the resistor R27 is connected with a rear-row right reading lamp control output end of the automobile ceiling lamp MCU, an emitter of the resistor triode Q31 is grounded, a base of the resistor triode Q31 is connected with one end of a resistor R4, the other end of the resistor R4 is grounded through a capacitor C14, and the other end of the resistor R4 serves as a driving end of the rear-row right reading driving circuit; the capacitance of the capacitor C14 is 10 nF; the circuit of prompting is lighted to reading lamp on the right side of back row includes diode D4, and the collection end of prompting circuit is lighted as the reading lamp on the right side of back row to this diode D4's negative pole, diode D4's negative pole still is through electric capacity C60 ground connection, diode D4's positive pole is through electric capacity C61 ground connection, diode D4's positive pole still connects power VCC 3V3 through resistance R88, diode D4's positive pole is connected with resistance R92's one end, resistance R92's the other end is through electric capacity C59 ground connection, resistance R92's the other end still with the feedback end is lighted to the reading lamp on the right side of back row of car dome lamp MCU.
4. The multifunctional circuit based on the automobile ceiling lamp as claimed in claim 1, wherein: the alarm module comprises an SOS switch circuit, an SOS display lamp circuit, a BCALL switch circuit and a BCALL display lamp circuit; an SOS control output end SOS output ctr of the automobile ceiling lamp MCU is connected with the SOS switch circuit, a switch signal output end of the SOS switch circuit is connected with the automobile ECU, and the automobile ECU is connected with the SOS display lamp circuit; a BCALL control output end BCALL ctr of the automobile ceiling lamp MCU is connected with a BCALL switch circuit, a switch signal output end of the BCALL switch circuit is connected with the automobile ECU, and the automobile ECU is connected with the BCALL display lamp circuit;
the SOS switch circuit comprises a resistor R114, one end of the resistor R114 is connected with an SOS control output end, one end of the resistor R114 is grounded after passing through a capacitor C125, the other end of the resistor R114 is connected with the base electrode of an eighth switch tube Q8, the eighth switch tube Q8 is an NPN type band-stop triode Q8, the emitting electrode of the band-stop triode Q8 is grounded, the collector electrode of the band-stop triode Q8 is connected with one end of a resistor R73, and the other end of the resistor R73 is used as a switch signal output end of the SOS switch circuit; the collector electrode of the band elimination triode Q8 is grounded after passing through a capacitor C101; the BCALL switch circuit comprises a resistor R122, one end of the resistor R122 is connected with a BCALL control output end, the other end of the resistor R122 is grounded after passing through a capacitor C126, and the other end of the resistor R122 is grounded after passing through a capacitor C79; the other end of the resistor R122 is connected with the base electrode of a ninth switching tube Q9, the ninth switching tube Q9 is an NPN type triode Q9 with a resistance, the emitting electrode of the triode Q9 with the resistance is grounded, the collector electrode of the triode Q9 with the resistance is connected with one end of a resistor R70, the other end of the resistor R70 is used as the switching signal output end of the BCALL switching circuit, and the collector electrode of the triode Q9 with the resistance is grounded after passing through a capacitor C98; the other end of the resistor R70 is connected with one end of a protection diode ESD2, and the other end of the protection diode ESD2 is connected with the other end of the resistor R73; the other end of the resistor R70 is grounded through a capacitor C80; the other end of the resistor R70 is connected with the other end of the resistor R73;
the SOS display lamp circuit comprises a diode D5, the anode of the diode D5 is connected with the SOS alarm display end of the automobile ECU, the anode of the diode D5 is grounded after passing through a capacitor C72, the cathode of the diode D5 is connected with the anode of a light-emitting diode LED7 after passing through a parallel resistor formed by connecting a resistor R82 and a resistor R138 in parallel, and the cathode of the light-emitting diode LED7 is grounded; two ends of the LED7 of the light-emitting diode are connected with a resistor R83 and a capacitor C66 in parallel;
the BCALL display lamp circuit comprises a diode D7, wherein the anode of the diode D7 is connected with a BCALL alarm display end of the automobile ECU, the anode of the diode D7 is grounded after passing through a capacitor C50, the cathode of the diode D7 is connected with the anode of an LED8 of the light-emitting diode after passing through a resistor R86, and the cathode of the LED8 of the light-emitting diode is grounded; and a resistor R42 and a capacitor C77 are connected in parallel at two ends of the LED8 of the light-emitting diode.
5. The multifunctional circuit based on the automobile ceiling lamp as claimed in claim 1, wherein: the key backlight indicating module comprises a key backlight circuit, and the key backlight circuit at least comprises a left reading lamp key backlight circuit, a reading lamp full-bright touch key backlight circuit and a right reading lamp key backlight circuit;
the left reading lamp key backlight circuit comprises a light emitting diode LED5, and the anode of the light emitting diode LED6 is connected with the VS output end of the power supply module through a resistor R49 and a resistor R51 which are connected in parallel; the VS output end is grounded through a capacitor C42; the cathode of the light emitting diode LED5 is connected with the collector of an NPN resistor transistor Q22, the base of the NPN resistor transistor Q22 is connected with one end of a resistor R18, the other end of the resistor R18 is connected with the background light control output end ILL _ LH _ ctr of the left reading lamp key of the automobile ceiling lamp MCU, the common end of the base of the resistor R18 and the base of the NPN resistor transistor Q22 is grounded through a capacitor C63, the other end of the resistor R18 is grounded through a capacitor C21, the emitter of the NPN resistor transistor Q22 is grounded, and the collector of the NPN resistor transistor Q22 is connected with the cathode of the light; a capacitor C24 and a resistor R109 are connected in parallel with two ends of the light-emitting diode LED 5;
the reading lamp full-bright touch key background lamp circuit comprises a light emitting diode LED6 and an NPN resistor transistor Q25, wherein the anode of the light emitting diode LED6 is connected with the VS output end of the power supply module through a resistor R58 and a resistor R62 which are connected in parallel; the VS output end of the power supply module is grounded through a capacitor C42; the base electrode of the NPN resistor transistor Q25 is connected with one end of a resistor R21, the other end of the resistor R21 is connected with a reading lamp full-bright key backlight control output end ILL _ door _ ctr of the automobile ceiling lamp MCU, the common end of the base electrodes of the resistor R21 and the NPN resistor transistor Q22 is grounded through a capacitor C64, the other end of the resistor R21 is grounded through a capacitor C29, the emitter electrode of the NPN resistor transistor Q25 is grounded, and the collector electrode of the NPN resistor transistor Q25 is connected with the cathode of a light-emitting diode LED 6; a capacitor C31 and a resistor R110 are connected in parallel at two ends of the light-emitting diode LED 6;
the right reading lamp key backlight circuit comprises a light-emitting diode LED2, the anode of the light-emitting diode LED2 is connected with one end of a third voltage-dividing resistor formed by connecting a resistor R40 and a resistor R41 in parallel, and the other end of the third voltage-dividing resistor formed by connecting a resistor R40 and a resistor R41 in parallel is connected with the collector of a PNP triode Q10; an emitter of a PNP triode Q10 is connected with a VS output end of the power supply module, a base of the PNP triode Q10 is connected with a collector of a resistor transistor Q18 through a resistor R117, an emitter of the resistor transistor Q18 is grounded, a base of the resistor transistor Q18 is connected with a right reading lamp key background lamp control output end SWDCLK & ILL _ RH _ ctr of the automobile ceiling lamp MCU through a resistor R16, and a collector of the resistor transistor Q18 is connected with the VS output end of the power supply module through a resistor R115; the anode of the light emitting diode LED2 is connected with the emitter of a PNP triode Q33, the collector of the PNP triode Q33 is grounded, and the base of the PNP triode Q33 is grounded through a resistor R118 and a capacitor C19; and a resistor R119 is arranged between the base electrode and the emitter electrode of the PNP triode Q33.
6. The multifunctional circuit based on the automobile ceiling lamp as claimed in claim 1, wherein: the safety belt and safety air bag indicating module comprises a safety air bag background light indicating driving circuit, a safety air bag forbidden indicating driving circuit, a safety air bag starting indicating driving circuit and a safety belt reminding driving circuit;
the signal input end of the safety airbag background light indication driving circuit is used for being connected with the safety airbag background light control output end of an automobile ceiling lamp MCU, and the driving output end of the safety airbag background light indication driving circuit is connected with the safety airbag background light indication circuit;
the signal input end of the airbag forbidding indication driving circuit is used for being connected with an airbag forbidding control output end of an automobile ceiling lamp MCU, the driving output end of the airbag forbidding indication driving circuit is connected with an airbag forbidding indication circuit, an airbag forbidding self-diagnosis point is arranged between the airbag forbidding indication driving circuit and the airbag forbidding indication circuit, and the airbag forbidding self-diagnosis point is used for being connected with an airbag forbidding diagnosis acquisition end of the automobile ceiling lamp MCU after passing through an airbag forbidding acquisition circuit;
the signal input end of the safety airbag starting indication driving circuit is used for being connected with an airbag starting control output end of an automobile ceiling lamp MCU, the driving output end of the safety airbag starting indication driving circuit is connected with a safety airbag starting indication circuit, an airbag starting self-diagnosis point is arranged between the safety airbag starting indication driving circuit and the safety airbag starting indication circuit, and the airbag starting self-diagnosis point is used for being connected with an airbag starting diagnosis acquisition end of the automobile ceiling lamp MCU after passing through an airbag starting acquisition circuit;
the safety belt reminding driving circuit comprises a safety belt reminding driving circuit and a safety belt reminding indicating circuit, wherein the signal input end of the safety belt reminding driving circuit is used for being connected with the safety belt control output end of an automobile ceiling lamp MCU, the driving output end of the safety belt reminding driving circuit is connected with the safety belt reminding indicating circuit, a safety belt reminding self-diagnosis point is arranged between the safety belt reminding driving circuit and the safety belt reminding indicating circuit, and the safety belt reminding self-diagnosis point is used for being connected with the safety belt reminding diagnosis collecting end of the automobile ceiling lamp MCU after the safety belt reminding collecting circuit.
7. The multifunctional circuit based on the automobile ceiling lamp as claimed in claim 6, wherein: the airbag backlight indicating drive circuit comprises a resistor R104, one end of the resistor R104 is used as a signal input end of the airbag backlight indicating drive circuit, one end of the resistor R104 is also grounded through a capacitor C82, the other end of the resistor R104 is connected with the base of a resistor triode Q13, the emitter of the resistor triode Q13 is grounded, the collector of the resistor triode Q13 is connected with the base of a PNP triode Q38 through a resistor R89, the common terminal of the PNP transistor Q38 and the resistor R89 is also connected to the VS output terminal of the power module via the resistor R84, the emitter of the PNP triode Q38 is connected with the VS output end of the power supply module, the collector of the PNP triode Q38 is connected with one end of a resistor R29, the other end of the resistor R29 is grounded through a resistor R38 and a capacitor C35 respectively, and the other end of the resistor R29 is also used as a driving output end of the airbag backlight indicating and driving circuit; the airbag background light indicating circuit comprises a light emitting diode LED9, a light emitting diode LED10 and a light emitting diode LED11 which are sequentially connected in series, wherein two ends of the light emitting diode LED9 are connected with a capacitor C97 in parallel, two ends of the light emitting diode LED10 are connected with a capacitor C118 in parallel, two ends of a light emitting diode LED11 are connected with a capacitor C56 in parallel, the cathode of the light emitting diode LED11 is grounded, and the anode of the light emitting diode LED9 is connected with the other end of the resistor R29;
the airbag forbidding indication driving circuit comprises a resistor R113, one end of the resistor R113 is used as a signal input end of the airbag forbidding indication driving circuit, one end of the resistor R113 is grounded through a capacitor C74, the other end of the resistor R113 is grounded through a capacitor C106, the other end of the resistor R113 is connected with the base electrode of a resistor triode Q19, the emitter electrode of the resistor triode Q19 is grounded, the collector electrode of the resistor triode Q19 is connected with the base electrode of a PNP triode Q41 through a resistor R105, and the base electrode of the PNP triode Q41 is connected with the VS output end of the power module through a resistor R90; the emitter of the PNP triode Q41 is connected with the VS output end of the power supply module, the collector of the PNP triode Q41 is connected with one end of a resistor R93 and a resistor 94 which are connected in parallel, and the other end of the PNP triode Q41 is used as the driving output end of the airbag forbidding indication driving circuit; the airbag forbidding indicating circuit comprises a light emitting diode LED12, a resistor R91 and a capacitor C55 are connected in parallel at two ends of a light emitting diode LED12, the anode of the light emitting diode LED12 is connected with the driving output end of the airbag forbidding indicating driving circuit, and the cathode of the light emitting diode LED12 is grounded; the airbag forbidden acquisition circuit comprises a resistor R31, one end of the resistor R31 is connected with the airbag forbidden self-diagnosis point, the other end of the resistor R31 is grounded through a resistor R68 and a capacitor C94, the other end of the resistor R31 is grounded through a resistor R68 and a capacitor C93, the other end of the resistor R31 is grounded through a capacitor C3, the resistor R31 is grounded through a resistor R74, and the common end of the resistor R68 and the capacitor C94 is used for being connected with the airbag forbidden diagnosis acquisition end of the automobile overhead light MCU;
the airbag starting indication driving circuit comprises a resistor R124, one end of the resistor R124 is used as a signal input end of the airbag starting indication driving circuit, one end of the resistor R124 is grounded through a capacitor C84, the other end of the resistor R124 is grounded through a capacitor C109, the other end of the resistor R124 is connected with a base electrode of a resistor triode Q16, an emitting electrode of the resistor triode Q16 is grounded, a collector electrode of the resistor triode Q16 is connected with a base electrode of a PNP triode Q44 through a resistor R121, and the base electrode of the PNP triode Q44 is connected with a VS output end of the power module through a resistor R112; the emitter of the PNP triode Q44 is connected with the VS output end of the power supply module, the collector of the PNP triode Q44 is connected with one end of a resistor R96 and one end of a resistor 97 which are connected in parallel, and the other end of the PNP triode Q44 is used as the driving output end of the airbag starting indication driving circuit; the airbag starting indicating circuit comprises a light emitting diode LED13, a resistor R98 and a capacitor C58 are connected in parallel at two ends of a light emitting diode LED13, the anode of the light emitting diode LED13 is connected with the driving output end of the airbag starting indicating driving circuit, and the cathode of the light emitting diode LED13 is grounded; the airbag starting acquisition circuit comprises a resistor R76, one end of the resistor R76 is connected with the airbag starting self-diagnosis point, the other end of the resistor R76 is grounded through a resistor R77 and a capacitor C113, the other end of the resistor R76 is grounded through a resistor R77 and a capacitor C114, the other end of the resistor R76 is grounded through a capacitor C49, the resistor R76 is grounded through a resistor R80, and the common end of the resistor R77 and the capacitor C114 is used for being connected with the airbag starting diagnosis acquisition end of the automobile ceiling lamp MCU;
the safety belt reminding driving circuit comprises a resistor R126, one end of the resistor R126 is used as a signal input end of the safety belt reminding driving circuit, one end of the resistor R126 is grounded through a capacitor C83, the other end of the resistor R126 is grounded through a capacitor C108, the other end of the resistor R126 is connected with the base electrode of a resistor triode Q15, the emitter electrode of the resistor triode Q15 is grounded, the collector electrode of the resistor triode Q15 is connected with the base electrode of a PNP triode Q45 through a resistor R125, and the base electrode of the PNP triode Q45 is connected with the VS output end of the power module through a resistor R123; an emitting electrode of the PNP triode Q45 is connected with a VS output end of the power module, a collector electrode of the PNP triode Q45 is connected with one end of a resistor R101, and the other end of the PNP triode Q45 is used as a driving output end of the safety belt reminding driving circuit; the safety belt reminding indicating circuit comprises a light emitting diode LED14, a light emitting diode LED15 and a light emitting diode LED16 which are sequentially connected in series; a capacitor C68 is connected in parallel with two ends of the light emitting diode LED14, a capacitor C104 is connected in parallel with two ends of the light emitting diode LED15, a capacitor C105 is connected in parallel with two ends of the light emitting diode LED16, the anode of the light emitting diode LED14 is connected with the safety belt reminding self-diagnosis point, the cathode of the light emitting diode LED16 is grounded, and the anode of the light emitting diode LED14 is grounded through the cathode of the light emitting diode LED16 after passing through a resistor R106; the safety belt reminding acquisition circuit comprises a resistor R71, one end of the resistor R71 is connected with the safety belt reminding self-diagnosis point, the other end of the resistor R71 is grounded through a resistor R72 and a capacitor C112, the other end of the resistor R71 is grounded through a resistor R72 and a capacitor C111, the other end of the resistor R71 is grounded through a capacitor C38, and the other end of the resistor R71 is grounded through a resistor R75; and the common end of the resistor R72 and the capacitor C111 is used for being connected with a safety belt reminding diagnosis acquisition end of the automobile ceiling lamp MCU.
8. The multifunctional circuit based on the automobile ceiling lamp as claimed in claim 1, wherein: the atmosphere lamp module comprises a first atmosphere lamp group and a second atmosphere lamp group;
each group of atmosphere lamp groups is provided with three branch circuits: a green light circuit, a red light circuit and a blue light circuit; each branch circuit is provided with an atmosphere lamp driving circuit and an atmosphere lamp display circuit which are sequentially connected with the automobile ceiling lamp MCU;
the atmosphere lamp driving circuit of the Green lamp circuit in the first atmosphere lamp group comprises an impedance triode Q7, the base of the impedance triode Q7 and one end of a resistor R60 are connected with the other end of the resistor R60 and grounded through a capacitor C103, the other end of the resistor R60 is also connected with a Green atmosphere lamp control output end Green ctr of the automobile ceiling lamp MCU, the base of the impedance triode Q7 is grounded through a capacitor C67, the emitter of the impedance triode Q7 is grounded, the collector of the impedance triode Q7 is respectively connected with the collector of a PNP triode Q12 and the base of a PNP triode Q17 through a resistor R30, the emitter of the triode Q12 is connected with the VS output end of the power module, the base of the triode Q12 is connected with the emitter of the triode Q17, a resistor R39 is connected between the emitter and the base of the triode Q12, the collector of the triode Q17 is connected with one end of a resistor R44, the other end of the resistor R44 is grounded through a capacitor, the other end of the resistor R44 is used as a driving output end AL G1+ of an atmosphere lamp driving circuit of a green lamp circuit in the first atmosphere lamp group;
the atmosphere lamp driving circuit of the Green lamp circuit in the second atmosphere lamp group comprises an impedance triode Q29, the base of the impedance triode Q29 and one end of a resistor R60 are connected, the other end of the resistor R60 is grounded through a capacitor C103, the other end of the resistor R60 is also connected with a Green atmosphere lamp control output Green ctr of the car headlight MCU, the base of the impedance triode Q29 is grounded through a capacitor C110, the emitter of the impedance triode Q29 is grounded, the collector of the impedance triode Q29 is respectively connected with a collector of a PNP triode Q30 and a base of a PNP triode Q35 through a resistor R59, the emitter of the triode Q30 is connected with the VS output end of the power module, the base of the triode Q30 is connected with the emitter of the triode Q35, a resistor R63 is connected between the emitter and the base of the triode Q30, the collector of the triode Q35 is connected with one end of a resistor R64, and the other end of the resistor R64 is grounded through a capacitor C99, the other end of the resistor R64 is used as a driving output end AL G2+ of an atmosphere lamp driving circuit of a green lamp circuit in the second atmosphere lamp group;
the atmosphere lamp driving circuit of the Red lamp circuit in the first atmosphere lamp group comprises an impedance triode Q20, the base of the impedance triode Q20 is connected with one end of a resistor R66, the other end of the resistor R66 is grounded through a capacitor C116, the other end of the resistor R60 is also connected with a Red atmosphere lamp control output end Red ctr of the automobile ceiling lamp MCU, the base of the impedance triode Q20 is grounded through a capacitor C81, the emitter of the impedance triode Q20 is grounded, the collector of the impedance triode Q20 is respectively connected with a collector of a PNP triode Q21 and a base of a PNP triode Q24 through a resistor R46, the emitter of the triode Q21 is connected with the VS output end of the power supply module, the base of the triode Q21 is connected with the emitter of the triode Q24, a resistor R48 is connected between the emitter and the base of the triode Q21, the collector of the triode Q24 is connected with one end of a resistor R50, the other end of the resistor R50 is grounded through a capacitor C76, and the other end of the resistor R76 is used as a driving output end AL R1+ of an atmosphere lamp driving circuit of a red lamp circuit in the first atmosphere lamp group;
the atmosphere lamp driving circuit of the Red lamp circuit in the second atmosphere lamp group comprises an impedance triode Q36, the base of the impedance triode Q36 is connected with one end of a resistor R66, the other end of the resistor R66 is grounded through a capacitor C116, the other end of the resistor R60 is also connected with a Red atmosphere lamp control output end Red ctr of the automobile ceiling lamp MCU, the base of the impedance triode Q36 is grounded through a capacitor C117, the emitter of the impedance triode Q36 is grounded, the collector of the impedance triode Q36 is respectively connected with a collector of a PNP triode Q37 and a base of a PNP triode Q39 through a resistor R65, the emitter of the triode Q37 is connected with the VS output end of the power module, the base of the triode Q37 is connected with the emitter of the triode Q39, a resistor R67 is connected between the emitter of the triode Q37 and the base, the collector of the triode Q39 is connected with one end of the resistor R81, the other end of the resistor R81 is grounded through a capacitor C115, and the other end of the resistor R81 is used as a driving output end AL R2+ of an atmosphere lamp driving circuit of a red lamp circuit in the second atmosphere lamp group;
the atmosphere lamp driving circuit of the Blue lamp circuit in the first atmosphere lamp group comprises an impedance triode Q26, the base of the impedance triode Q26 is connected with one end of a resistor R95, the other end of the resistor R95 is grounded through a capacitor C120, the other end of the resistor R95 is also connected with the Blue atmosphere lamp control output end Blue ctr of the automobile dome lamp MCU, the base of the impedance triode Q26 is grounded through a capacitor C89, the emitter of the impedance triode Q26 is grounded, the collector of the impedance triode Q26 is respectively connected with a collector of a PNP triode Q27 and a base of a PNP triode Q28 through a resistor R52, the emitter of the triode Q27 is connected with the VS output end of the power supply module, the base of the triode Q27 is connected with the emitter of the triode Q28, a resistor R63 is connected between the emitter and the base of the triode Q27, the collector of the triode Q28 is connected with one end of a resistor R64, the other end of the resistor R64 is grounded through a capacitor C99, and the other end of the resistor R64 is used as a driving output end AL B1+ of an atmosphere lamp driving circuit of a blue lamp circuit in the first atmosphere lamp group;
the atmosphere lamp driving circuit of the Blue lamp circuit in the second atmosphere lamp group comprises an impedance triode Q40, the base of the impedance triode Q40 is connected with one end of a resistor R95, the other end of the resistor R95 is grounded through a capacitor C120, the other end of the resistor R95 is also connected with a Blue atmosphere lamp control output end Blue ctr of the automobile dome lamp MCU, the base of the impedance triode Q40 is grounded through a capacitor C121, the emitter of the impedance triode Q40 is grounded, the collector of the impedance triode Q40 is respectively connected with a collector of a PNP triode Q42 and a base of a PNP triode Q43 through a resistor R87, the emitter of the triode Q42 is connected with the VS output end of the power module, the base of the triode Q42 is connected with the emitter of the triode Q43, a resistor R99 is connected between the emitter of the triode Q42 and the base, the collector of the triode Q43 is connected with one end of a resistor R102, the other end of the resistor R102 is connected to ground via a capacitor C119, and the other end of the resistor R102 is used as the driving output terminal AL B2+ of the atmosphere lamp driving circuit of the blue lamp circuit in the second atmosphere lamp group.
9. The multifunctional circuit based on the automobile ceiling lamp as claimed in claim 1, wherein: the chip model of the automobile ceiling lamp MCU is as follows: ATSAMHA1, wherein a PWM regulator is arranged in the automobile ceiling lamp MCU.
10. The multifunctional circuit based on the automobile ceiling lamp as claimed in claim 1, wherein: and the automobile ceiling lamp MCU is connected with a main connector.
CN202022135186.5U 2020-09-25 2020-09-25 Multifunctional circuit based on automobile ceiling lamp Active CN213457705U (en)

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Application Number Priority Date Filing Date Title
CN202022135186.5U CN213457705U (en) 2020-09-25 2020-09-25 Multifunctional circuit based on automobile ceiling lamp

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Application Number Priority Date Filing Date Title
CN202022135186.5U CN213457705U (en) 2020-09-25 2020-09-25 Multifunctional circuit based on automobile ceiling lamp

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CN213457705U true CN213457705U (en) 2021-06-15

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