CN103458590A - Control circuit of automobile LED trim atmosphere lamp - Google Patents
Control circuit of automobile LED trim atmosphere lamp Download PDFInfo
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- CN103458590A CN103458590A CN201310453285XA CN201310453285A CN103458590A CN 103458590 A CN103458590 A CN 103458590A CN 201310453285X A CN201310453285X A CN 201310453285XA CN 201310453285 A CN201310453285 A CN 201310453285A CN 103458590 A CN103458590 A CN 103458590A
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Abstract
The invention discloses a control circuit of an automobile LED trim atmosphere lamp. The control circuit comprises an MCU main control circuit, wherein the input end of the MCU main control circuit is connected with a touch input circuit, the output end of the MCU main control circuit is connected with an LED drive circuit, and the MCU main control circuit, the touch input circuit and the LED drive circuit are all connected with a power supply switching circuit. By means of the touch input circuit, the control circuit can easily achieve switching of different color modes in an automobile and display of a dynamic full-color mode, and further improve the comfort degree of driving and riding.
Description
Technical field
The present invention relates to the automotive trim lamp field, be specifically related to a kind of automobile LED interior trim atmosphere lamp control circuit.
Background technology
At present, people's life stress is increasing, and the environment of creating a comfortable easiness becomes the important topic that people pay close attention to.As everyone knows, the automotive interior luminous environment is to provide the important tool of a home from home.Therefore, its color, variation pattern and occupation mode etc. all can play to driver and passenger's comfort remarkable effect, especially automotive interior luminous environment and adopt intelligent mode, can further improve driving and passenger's comfortableness.
Summary of the invention
The purpose of this invention is to provide a kind of automobile LED interior trim atmosphere lamp control circuit, can easily realize the conversion of different color pattern in car and the demonstration of dynamic full-color form.
The invention discloses a kind of automobile LED interior trim atmosphere lamp control circuit, comprise the MCU governor circuit, the input of MCU governor circuit connects the touch input circuit, the output of MCU governor circuit is connected with LED drive circuit, and described MCU governor circuit, touch input circuit and LED drive circuit all are connected with power-switching circuit.
Wherein, described MCU governor circuit comprises single-chip microcomputer and peripheral circuit, and described peripheral circuit comprises power supply circuits, crystal oscillating circuit and jtag circuit.
Wherein, described touch input circuit comprises and touches chip and touch key-press, and 1,3 pin that touches chip just is being respectively the power supply ground of chip and power supply, 2, be connected with filter capacitor between 4 pins and between 3,4 pins, 5,6 pins connect touch key-press, for two-way touches input, 7,8 pins are correspondence 5 respectively, the touch input of 6 pins and output signal, when touch key-press is touched, touch output pin output touch signal to the MCU governor circuit.
Wherein, when touching touch key-press, the respective pin output that touches chip is 5v, and the output touch signal is to MCU; After touch action is withdrawn touch key-press, the respective pin output is 0v, the output of no touch level signal.
Wherein, touch key-press is two, can be pressed simultaneously, and two-way touches input and can come into force simultaneously.
Wherein, described LED drive circuit comprises that full-color led drives chip, and the MCU control circuit sends the RGB pin that corresponding pwm drives chip to led, controls corresponding color change.
Wherein, led drives 3,2,1 pin of chip to receive latch signal, clock signal and the data-signal of MCU control circuit.
Wherein, by 3,2,1 pin that led is driven to chip, with 3,2,1 pin of next stage led chip, be connected, latch signal, clock signal and data-signal can be transferred to next stage led and drive chip, carry out many group led drive circuits and control.
The accompanying drawing explanation
Fig. 1: Circuits System pie graph of the present invention;
Fig. 2: touch input circuit figure;
Fig. 3: MCU governor circuit figure;
Fig. 4: the circuit diagram of LED drive circuit.
Embodiment
Below in conjunction with accompanying drawing, the present invention is specifically described.
A kind of automobile LED interior trim atmosphere lamp control circuit, comprise the MCU governor circuit, the input of MCU governor circuit connects the touch input circuit, the output of MCU governor circuit is connected with LED drive circuit, and described MCU governor circuit, touch input circuit and LED drive circuit all are connected with power-switching circuit.
Described MCU governor circuit comprises MCU, and MCU adopts the XC878 of Infineon or XC888 type single-chip microcomputer, and its peripheral circuit comprises power supply circuits, crystal oscillating circuit, jtag circuit.
Described touch input circuit adopts special touch chip, and 1,3 pin just is being respectively the power supply ground of chip and power supply; Between 2,4 pins, all need to add filter capacitor between 3,4 pins, play the effect of burning voltage; 5,6 pins are that two-way touches the pad input, and 7,8 pins corresponding 5,6 pin pad respectively touch and the output low and high level, and after touching pad1,6 pins obtain touch condition, bright with 8 pin D1 lamps, and R1 is as divider resistance, and 8 pin outputs being detected is 5v; After finger is taken away pad1, lamp goes out, and 8 pin end are 0v.8 pin output touch signal TOUCH1 are to MCU simultaneously; Only with one group of touch, need the direct circuit of another group 5,7 pin the same with 6,8 pins herein; Two-way touches and can come into force simultaneously, does not interfere with each other after touch action is withdrawn, and the output level of corresponding output will return to the initial condition that powers on, and touch is arranged, and the level output while touching is just arranged, and no touch is the output of initial condition of powering on;
Described LED drive circuit comprises that full-color led drives chip; The positive pole that chip 16 pins are chip power supply, directly receive the positive pole of 5v power supply by above drawing a resistance; The ground that 8 pins are chip power supply, directly connect the negative pole of 5v power supply; The polarity that 4 pins are the electric current of controlling 5,6,7 pins outputs, select normal polarity herein, therefore 4 pins connect after drawing resistance, connects positive source; The selection of the trigger mode that 12 pins are serial data, the data of herein selecting, in the rising edge output of clock signal, directly connect power supply ground; 9,10,11 pins connecting resistance respectively are connected to the ground, and are used for adjusting the size of three channel currents of 5,6,7 pins; After 13 pins connect and draw resistance and power supply just, with the sti of the led chip of MCU or upper level connection, be that latch signal is connected, the led chip that 14,15 pins join with MCU or upper level respectively clock cki with data-signal dai, be connected; 3sto, 2cko, 1dao connects respectively latch signal sti, clock signal cki and the data-signal dai that next cascade led drives chip.
The specific works principle of the control circuit in the present invention is as follows, and the p1.0 of the I/O mouth of single-chip microcomputer is set to input, connects after a shunt resistance TOUCH1 signal that circuit is touched in directly contact simultaneously; P3.0, P3.1, P3.2 connect draw resistance and 5v power supply just afterwards respectively with the clock cki of led drive circuit, dai and sti; When having touched the TOUCHPAD touch key-press in the input circuit, 6 pins in circuit ic obtain touch signal, and the middle light-emitting diode of controlling 8 pins is bright, exports high level to touch1 simultaneously; Single-chip microcomputer P1.0 port i.e. 34 pins is the touch1 signal input part, now receives the high level of touch1, and the single-chip microcomputer acquiescence has touch key-press by by once.Now single-chip microcomputer P3.0 pin output low level is latch signal P3.1 simultaneously to sti, the P3.2 pin is given corresponding clock signal, data-signal is to sclo and sdao, now in the led drive circuit 13 pins to receive the sti signal be latch signal, 14 pins receive the sclo clock signal, 15 pins receive the sdao data-signal, process and send corresponding pwm to 5 of led driving chip through ic, 6,7 is the RGB pin, is also the corresponding color change of tri-color tube foot control system of full-color led; Simultaneously, led drives 3,2,1 pin signal of chip to be respectively latch signal, clock signal and data-signal, and the led that is transferred to next stage drives chip, reaches single-chip microcomputer and controls the function that many group led drive module simultaneously.
Claims (8)
1. an automobile LED interior trim atmosphere lamp control circuit, it is characterized in that: comprise the MCU governor circuit, the input of MCU governor circuit connects the touch input circuit, the output of MCU governor circuit is connected with LED drive circuit, and described MCU governor circuit, touch input circuit and LED drive circuit all are connected with power-switching circuit.
2. automobile LED interior trim atmosphere lamp control circuit according to claim 1, it is characterized in that: described MCU governor circuit comprises single-chip microcomputer and peripheral circuit, and described peripheral circuit comprises power supply circuits, crystal oscillating circuit and jtag circuit.
3. automobile LED interior trim atmosphere lamp control circuit according to claim 1 and 2, it is characterized in that: described touch input circuit comprises touch chip and touch key-press, touch 1 of chip, 3 pins just are being respectively the power supply ground of chip and power supply, 2, be connected with filter capacitor between 4 pins and between 3,4 pins, 5,6 pins connect touch key-press, for two-way touches input, 7,8 pins are correspondence 5 respectively, the touch input of 6 pins and output signal, when touch key-press is touched, touch output pin output touch signal to the MCU governor circuit.
4. automobile LED interior trim atmosphere lamp control circuit according to claim 3 is characterized in that: when touching touch key-press, the respective pin output that touches chip is 5v, and the output touch signal is to MCU; After touch action is withdrawn touch key-press, the respective pin output is 0v, the output of no touch level signal.
5. according to the described automobile LED interior trim of claim 3 or 4 atmosphere lamp control circuit, it is characterized in that: touch key-press is two, can be pressed simultaneously, and two-way touches input and can come into force simultaneously.
6. according to the described automobile LED interior trim of claim 1-5 any one atmosphere lamp control circuit, it is characterized in that: described LED drive circuit comprises that full-color led drives chip, the MCU control circuit sends the RGB pin that corresponding pwm drives chip to led, controls corresponding color change.
7. automobile LED interior trim atmosphere lamp control circuit according to claim 6, is characterized in that: latch signal, clock signal and the data-signal of 3,2,1 pin reception MCU control circuit of led driving chip.
8. according to the described automobile LED interior trim of claim 6 or 7 atmosphere lamp control circuit, it is characterized in that: by 3,2,1 pin that led is driven to chip, with 3,2,1 pin of next stage led chip, be connected, latch signal, clock signal and data-signal can be transferred to next stage led and drive chip, carry out many group led drive circuits and control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310453285.XA CN103458590B (en) | 2013-09-29 | 2013-09-29 | A kind of control circuit of automobile LED trim atmosphere lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310453285.XA CN103458590B (en) | 2013-09-29 | 2013-09-29 | A kind of control circuit of automobile LED trim atmosphere lamp |
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| Publication Number | Publication Date |
|---|---|
| CN103458590A true CN103458590A (en) | 2013-12-18 |
| CN103458590B CN103458590B (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310453285.XA Active CN103458590B (en) | 2013-09-29 | 2013-09-29 | A kind of control circuit of automobile LED trim atmosphere lamp |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2528185Y (en) * | 2002-01-09 | 2002-12-25 | 佛山市光电器材公司 | Controller for multicolour LED decorative lamp |
| CN201496874U (en) * | 2009-06-10 | 2010-06-02 | 宁波市佳音机电科技有限公司 | Intelligent remote control color-changing lamp |
| CN201842012U (en) * | 2010-10-15 | 2011-05-25 | 长安大学 | Interior different tone-based safe automobile driving device |
| CN202413603U (en) * | 2012-01-13 | 2012-09-05 | 北京汽车股份有限公司 | Automobile |
| CN202634794U (en) * | 2012-05-08 | 2012-12-26 | 重庆文理学院 | Automobile dimming LED reading lamp |
-
2013
- 2013-09-29 CN CN201310453285.XA patent/CN103458590B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2528185Y (en) * | 2002-01-09 | 2002-12-25 | 佛山市光电器材公司 | Controller for multicolour LED decorative lamp |
| CN201496874U (en) * | 2009-06-10 | 2010-06-02 | 宁波市佳音机电科技有限公司 | Intelligent remote control color-changing lamp |
| CN201842012U (en) * | 2010-10-15 | 2011-05-25 | 长安大学 | Interior different tone-based safe automobile driving device |
| CN202413603U (en) * | 2012-01-13 | 2012-09-05 | 北京汽车股份有限公司 | Automobile |
| CN202634794U (en) * | 2012-05-08 | 2012-12-26 | 重庆文理学院 | Automobile dimming LED reading lamp |
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| CN103458590B (en) | 2015-09-23 |
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