CN105644426B - A kind of automobile using ceiling light control module - Google Patents
A kind of automobile using ceiling light control module Download PDFInfo
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- CN105644426B CN105644426B CN201510993094.1A CN201510993094A CN105644426B CN 105644426 B CN105644426 B CN 105644426B CN 201510993094 A CN201510993094 A CN 201510993094A CN 105644426 B CN105644426 B CN 105644426B
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Abstract
The invention discloses a kind of automobile-used interior roof lamp control module of the digital-to-analog circuit technology with PWM functions, including power module, input module, state latch module and output module.Power module is used to energize；Input module is used for input signal, and completes the processing to input signal by analog device, and the signal of the input through input module by the computing of logic trigger circuit, is completed the processing to input signal and the latch of output state by state latch module；Output module completes the conversion to the data signal of logic trigger circuit to high current.The key of the present invention is by digital circuit and the processing of the input signal of analog circuit and state latch, complete the logic control of 6 switch inputs to indoor lamp for car, enable before and after indoor lamp for car ceiling light mutually and independent control, the detection process to pwm signal is realized by analog- and digital- hardware circuit simultaneously, completes the PWM controls of interior roof lamp.
Description
Technical field
It is more particularly to a kind of to be used for popular MQB platform trucks room the invention belongs to interior automotive lighting control technology field
Interior ceiling light logic control technique.
Background technology
Current popular MQB platforms, including way are seen, Magotan, and the interior roof lamp of the vehicle such as Audi has one and very serious asked
Topic, customer complaint complaint are more and more high.The problem is that front and rear ceiling light can not be independently controlled：When all light of front ceiling lamp panel
When switching SW1 and opening, ceiling light after the switch S1 and S2 of rear ceiling light can not be closed；When all light switch SW1 in front ceiling lamp face is opened
When, the closing of ceiling light after rear ceiling light all light switch SW3 on sinciput light panel is uncontrollable；When the after ceiling light of front ceiling lamp panel
When all light switch SW3 is opened, ceiling light after the switch S1 and S2 of rear ceiling light can not also be closed；When after ceiling light switch S1 and S2 open
Afterwards during ceiling light, the closing of the uncontrollable rear ceiling lights of switch SW1 and SW3 of sinciput light panel.
The content of the invention
It is an object of the invention to for deficiency of the prior art, there is provided a kind of automobile using ceiling light control module, the hair
Bright is to use a kind of digital-to-analog circuit and state latch, completes the logic control of 6 switch inputs to indoor lamp for car,
Realize competitive relation between input switch signal so that ceiling light can mutually and independent control, with most before and after indoor lamp for car
The highest priority of once-through operation afterwards；The detection process to pwm signal is realized by analog- and digital- hardware circuit simultaneously, it is complete
PWM into interior roof lamp is controlled.
Technical problem solved by the invention can be realized using following technical scheme：
A kind of automobile using ceiling light control module, including
Power module, the power module are used to 12V input voltage being converted to 9V voltage outputs；
Input module, the input module is used for input signal, and completes the place to input signal by analog device
Reason；
The signal of input through input module is passed through logical triggering electricity by state latch module, the state latch module
The computing on road, complete the processing to input signal and the latch of output state；
Output module completes the conversion to the data signal of logic trigger circuit to high current；
Processing of the input module to input signal includes Key dithering, filtering, pulse detection, blocking and anti-phase, its general
The switching signal of input is converted to pulse signal, and the signal of input includes：Ceiling light all light switchs SW1, reading lamp switch SW2, after
Ceiling light all light switchs SW3, PWM gate controlled switch SW4, and ceiling light switch inputs S1 and left back ceiling light switch input S2 behind the right side, wherein
SW4 is PWM gate controlled switch signals, and when SW4 is effective, input module passes through hardware logic according to the state of other switching signals
Processing to PWM gate controlled switch signals, complete to fade off gradually bright control to ceiling light；It is complete that the pulse signal of output includes ceiling light
Ceiling light is opened behind bright switching pulse A, reading lamp switch pulse B, rear ceiling light all light switching pulse C, PWM gate controlled switch pulse D, the right side
Guan pulse rushes E and left back ceiling light switching pulse F；
The latch of output state includes the opening of ceiling light L4 behind left front ceiling light L1, right front ceiling lamp L2, left back ceiling light L3 and the right side
With the latch of closed mode.
Further, the analog device of the input module includes diode, triode, resistance and electric capacity.
The control logic of above-mentioned module is as follows：
When ceiling light all light switching pulse A is rising edge, the left front ceiling light logic latch output Q1 of state latch module,
Ceiling light logic latch output Q4 is height after right front ceiling lamp logic latches output Q2, left back ceiling light logic latches output Q3 and the right side
Level, and latch the state；
When ceiling light all light switching pulse A is trailing edge, except Q2 output changes with reading lamp switch pulse B, remaining
Output is all low level, and latches the state, until next ceiling light all light switching pulse A changes；
When current reading lamp switch pulse B is high and effective, right headlight logic latches output Q2 as height；Current reading lamp
Switching pulse B for it is low and invalid when, while ceiling light all light switching pulse A for it is invalid when, right headlight logic latches output Q2 and is
It is low；It is all height that ceiling light logic, which latches output Q3 and Q4, when rear ceiling light all light switching pulse C is rising edge of a pulse, behind left and right；When
Afterwards ceiling light all light switching pulse C be risen under pulse along when, ceiling light logic latches output Q3 and Q4 all to be low behind left and right；
When left back ceiling light switching pulse rising edge is effective, at the same Q3 state for it is high when, the now output Q4 of left back ceiling light
To be low；When left back ceiling light switching pulse rising edge is effective, while Q3 state is low, now the output Q4 of left back ceiling light is
It is high；Logic of the logic of ceiling light with left back ceiling light behind the right side.
Compared with prior art, beneficial effects of the present invention are as follows：
The present invention realizes the detection process to pwm signal by analog- and digital- hardware circuit, completes interior roof lamp
PWM is controlled, while completes independent control of 6 switch inputs to ceiling light, and the highest priority to operate for the last time.
Brief description of the drawings
Fig. 1 is automobile using interior roof lamp control module block diagram of the present invention.
Fig. 2 is automobile using interior roof lamp control module input and output schematic diagram of the present invention.
Fig. 3 popular MQB platforms automobile using interior roof lamp control module wiring diagrams of the present invention.
Fig. 4 input module signal transacting schematic diagrames of the present invention.
Fig. 5 state latch module diagrams of the present invention.
Fig. 6 PWM states of the present invention latch oscillogram.
Embodiment
To be easy to understand the technical means, the inventive features, the objects and the advantages of the present invention, tie below
Embodiment is closed, the present invention is expanded on further.
The present invention discloses a kind of automobile-used interior roof lamp control module of the digital-to-analog circuit technology with PWM functions, such as
Shown in Fig. 1, including power module, input module, state latch module and output module.Power module is by TVS pipe, three
Pole pipe and voltage-stabiliser tube complete 12V input voltage to be converted to 9V voltage outputs；Input module passes through diode, triode, electricity
The processing of the complete pair signals input of the analog device such as resistance and electric capacity；State latch module is the signal warp signal input module
Cross the computing of logic trigger circuit, the processing of complete pair signals input and the latch of output state；Output module is completed to logic
Conversion of the data signal of triggers circuit to high current.
As shown in Fig. 2 power module is completed to supply the 9V of whole module；Input module passes through diode, triode, electricity
The processing of the complete pair signals input of the analog device such as resistance and electric capacity, input signal include：Ceiling light all light switch SW1 (open by self-locking
Close), reading lamp switch SW2 (self-lock switch), rear ceiling light all light switch SW3 (self-lock switch), PWM gate controlled switch SW4 (self-lockings
Switch), it is right after ceiling light switch input S1 (pulse type switch) and left back ceiling light switch input S2 (pulse type switch), wherein SW4
For PWM gate controlled switch signals, when SW4 is effective, the module is according to the states of other switching signals, by hardware logic to PWM
The processing of gate controlled switch signal, complete to fade off gradually bright control to ceiling light.State latch module is according to signal input module
Signal, by the computing of logic trigger circuit, the processing of complete pair signals input and the latch of output state, output state
Latching includes the latch of ceiling light L4 on and off behind left front ceiling light L1, right front ceiling lamp L2, left back ceiling light L3 and the right side.
Output module is completed to drive state latch logic circuit four ceiling lights L1, L2, L3 and L4, and the drive circuit has short circuit event
Barrier and over current fault defencive function, when four ceiling lights, there is short circuit in any one or excessively stream, the module immediately close off output,
Until Failure elimination, Fig. 3 is the wiring diagram of popular MQB platforms automobile using interior roof lamp control module.
Input module is made up of diode, triode, resistance and electric capacity, and circuit completes the processing to input signal, place
Reason includes Key dithering, filtering, pulse detection, blocking and anti-phase etc..When SW1 is effective, processing of the output module to input signal
It is illustrated in fig. 4 shown below, SW1 is self-lock switch, and inactive level is height, and significant level is low.When SW1 is effective, debouncing circuit is complete
The Key dithering of paired input signal, removes some unstable spike signals in switch significant instant, prevents to signal
Maloperation；The complete pair signals of filter circuit small and spike filters out, prevent from causing subsequent conditioning circuit some erroneous judgements；Pulse
Signal deteching circuit and block isolating circuit, complete to be converted into pulse signal circuit to incoming level varying circuit, so as to state latch
The processing of module；Original low level pulse, is exactly converted to high level arteries and veins by the reverse-phase of the complete pair signals of negative circuit
Punching.
Input module is respectively received the input signal of 6 switches：Ceiling light all light switch SW1, reading lamp switch SW2, after
Ceiling light switch input S1 and left back ceiling light switch input S2 behind ceiling light all light switch SW3, PWM gate controlled switch SW4, the right side, by locating
The pulse signal exported after reason is respectively：Ceiling light all light switching pulse A, reading lamp switch pulse B, rear ceiling light all light switch arteries and veins
Rush C, PWM gate controlled switch pulse D, it is right after ceiling light switching pulse E and left back ceiling light switching pulse F.State latch module receives
Logical operation is carried out after these pulse signals, and carries out state latch, is illustrated in fig. 5 shown below：The logical truth of state latch module
It is as shown in table 1 to be worth table.Because the driving force of state latch module is not enough to drive interior roof lamp, output module completion status
Conversion of the data signal of the logic trigger circuit of latch module to high current.
Referring to table 1, when ceiling light all light switching pulse A is rising edge, no matter other input switch pulses are in any shape
State, output Q1, Q2, Q3, Q4 are in any state, and output Q1, Q2, Q3, Q4 of state latch module are high level, and
Latch the state.When pulse A is trailing edge, except Q2 output changes with pulse B, remaining output is all low level, and
The state is latched, has pulse change until next time.When currently reading lamp switch pulse B is high effective, right headlight logic latches output
Q2 is height；When current reading lamp switch pulse B is low invalid, at the same pulse A for it is invalid when, right headlight logic latches output Q2 and is
It is low.It is all height that ceiling light logic, which latches output Q3 and Q4, when rear ceiling light all light switching pulse C is rising edge of a pulse, behind left and right；When
Afterwards ceiling light all light switching pulse C be risen under pulse along when, ceiling light logic latches output Q3 and Q4 all to be low behind left and right.
When left back ceiling light switching pulse rising edge is effective, at the same Q3 state for it is high when, the now output Q3 of left back ceiling light
To be low；When left back ceiling light switching pulse rising edge is effective, while Q3 state is low, now the output Q3 of left back ceiling light is
It is high.Logic of the logic of ceiling light with left back ceiling light behind the right side.
When pulse D pwm signal is effective, highest priority now, Fig. 6 describes pulse D pwm signal processing
With the oscillogram of state latch.The figure feature is not only modulated and handled to low effective PWM waveform, while pulse D's
The low height for being efficiently translated into the output of state latch module of PWM is effectively.The ingenious part of the circuit is the height to PWM inputs
The processing and latch of level：When pwm signal is by high step-down, trailing edge pulse-detecting circuit detects and exports high pulse signal,
When pwm pulse signal is by low uprise, rising edge pulse detection discharge and recharge of the circuit by electric capacity, detects and export high impulse letter
Number, then the pulse signal of the two outputs carries out latch output by logic to pwm signal, completes the output control to PWM
System.Fig. 6 pulse D PWM input signals can be seen that in cycle T 1, T2, T3 and T4, effective low level signal dutycycle
Less and less, the PWM effective high level signal of Q outputs is also less and less, and the display of the control for lamp is exactly from bright state
Gradually dimmed process.
Table 1
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The skill of the industry
For art personnel it should be appreciated that the present invention is not limited to the above embodiments, described in above-described embodiment and specification is explanation
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, this
A little changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claim
Book and its equivalent thereof.
Claims (3)
1. a kind of automobile using ceiling light control module, including
Power module, the power module are used to 12V input voltage being converted to 9V voltage outputs；
Input module, the input module is used for input signal, and completes the processing to input signal by analog device；
State latch module, the fortune that the signal of the input through input module is passed through logic trigger circuit by the state latch module
Calculate, complete the processing to input signal and the latch of output state；
Output module completes the conversion to the data signal of logic trigger circuit to high current；It is characterized in that：
Processing of the input module to input signal includes Key dithering, filtering, pulse detection, blocking and anti-phase, and it will input
Switching signal be converted to pulse signal, the signal of input includes：Ceiling light all light switchs SW1, reading lamp switch SW2, rear ceiling light
All light switchs SW3, PWM gate controlled switch SW4, it is right after ceiling light switch input S1 and the switch input of left back ceiling light S2, wherein SW4 be
PWM gate controlled switch signals, when SW4 is effective, input module is according to the states of other switching signals, by hardware logic to PWM
The processing of gate controlled switch signal, complete to fade off gradually bright control to ceiling light；The pulse signal of output switchs including ceiling light all light
Ceiling light switching pulse E behind pulse A, reading lamp switch pulse B, rear ceiling light all light switching pulse C, PWM gate controlled switch pulse D, the right side
With left back ceiling light switching pulse F；
What the latch of output state included ceiling light L4 behind left front ceiling light L1, right front ceiling lamp L2, left back ceiling light L3 and the right side beats on and off
The latch of closed state.
2. automobile using ceiling light control module according to claim 1, it is characterised in that：The analog device of the input module
Including diode, triode, resistance and electric capacity.
A kind of 3. logic control method of automobile using ceiling light control module as claimed in claim 1, it is characterised in that：
When ceiling light all light switching pulse A is rising edge, the left front ceiling light logic of state latch module latches output Q1, right sinciput
Ceiling light logic latch output Q4 is high level after lamp logic latches output Q2, left back ceiling light logic latches output Q3 and the right side, and
And latch the state；
When ceiling light all light switching pulse A is trailing edge, except Q2 output changes with reading lamp switch pulse B, remaining output
All it is low level, and latches the state, until next ceiling light all light switching pulse A changes；
When current reading lamp switch pulse B is high and effective, right headlight logic latches output Q2 as height；Current reading lamp switch arteries and veins
Rush B for it is low and invalid when, while ceiling light all light switching pulse A for it is invalid when, right headlight logic latches output Q2 to be low；When after top
It is all height that ceiling light logic, which latches output Q3 and Q4, when lamp all light switching pulse C is rising edge of a pulse, behind left and right；When after ceiling light all light
Switching pulse C be risen under pulse along when, ceiling light logic latches output Q3 and Q4 all to be low behind left and right；
When left back ceiling light switching pulse rising edge is effective, while Q3 state is high, now the output Q4 of left back ceiling light is low；
When left back ceiling light switching pulse rising edge is effective, while Q3 state is low, now the output Q4 of left back ceiling light is height；Behind the right side
Logic of the logic of ceiling light with left back ceiling light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510993094.1A CN105644426B (en) | 2015-12-25 | 2015-12-25 | A kind of automobile using ceiling light control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510993094.1A CN105644426B (en) | 2015-12-25 | 2015-12-25 | A kind of automobile using ceiling light control module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105644426A CN105644426A (en) | 2016-06-08 |
| CN105644426B true CN105644426B (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510993094.1A Active CN105644426B (en) | 2015-12-25 | 2015-12-25 | A kind of automobile using ceiling light control module |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773641B (en) * | 2016-12-29 | 2023-05-16 | 延锋伟世通汽车电子有限公司 | Module system for safety control of automation equipment |
| CN111347841B (en) * | 2020-03-23 | 2022-05-13 | 高斯贝尔数码科技股份有限公司 | Automobile disinfection lamp control system and method |
| CN112968611B (en) * | 2021-03-22 | 2022-08-23 | 矽力杰半导体技术(杭州)有限公司 | Control circuit and switching power supply using same |
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| CN101477365A (en) * | 2008-12-19 | 2009-07-08 | 重庆集诚汽车电子有限责任公司 | Autobody control system and control method |
| CN201300796Y (en) * | 2007-12-19 | 2009-09-02 | 奇瑞汽车股份有限公司 | Vehicle body control system |
| CN202294498U (en) * | 2011-10-19 | 2012-07-04 | 北京汽车股份有限公司 | Automobile rear ceiling lamp control circuit, automobile front ceiling lamp control circuit and automobile |
| CN104936354A (en) * | 2015-06-26 | 2015-09-23 | 上海沪工汽车电器有限公司 | Automotive rear indoor lamp control module and control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8400061B2 (en) * | 2007-07-17 | 2013-03-19 | I/O Controls Corporation | Control network for LED-based lighting system in a transit vehicle |
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2015
- 2015-12-25 CN CN201510993094.1A patent/CN105644426B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201300796Y (en) * | 2007-12-19 | 2009-09-02 | 奇瑞汽车股份有限公司 | Vehicle body control system |
| CN101477365A (en) * | 2008-12-19 | 2009-07-08 | 重庆集诚汽车电子有限责任公司 | Autobody control system and control method |
| CN202294498U (en) * | 2011-10-19 | 2012-07-04 | 北京汽车股份有限公司 | Automobile rear ceiling lamp control circuit, automobile front ceiling lamp control circuit and automobile |
| CN104936354A (en) * | 2015-06-26 | 2015-09-23 | 上海沪工汽车电器有限公司 | Automotive rear indoor lamp control module and control method |
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| CN105644426A (en) | 2016-06-08 |
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