CN204904001U - Automobile body controller of area regulation control in a poor light - Google Patents
Automobile body controller of area regulation control in a poor light Download PDFInfo
- Publication number
- CN204904001U CN204904001U CN201520688216.1U CN201520688216U CN204904001U CN 204904001 U CN204904001 U CN 204904001U CN 201520688216 U CN201520688216 U CN 201520688216U CN 204904001 U CN204904001 U CN 204904001U
- Authority
- CN
- China
- Prior art keywords
- backlight
- output terminal
- mcu
- input end
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides an automobile body controller of area regulation control in a poor light, include: regulating unit, ADC acquisition unit, MCU and drive unit are shaded, ADC acquisition unit's first input end with regulating unit's in a poor light output links to each other, ADC acquisition unit's output with MCU's input links to each other, drive unit's input with MCU's output links to each other, drive unit's output with ADC acquisition unit's second input links to each other, drive unit's output is still continuous with the input of backlight. Regulating unit in a poor light is used for producing to be increased the first voltage that is shaded and reduces the second voltage that is shaded, MCU confirms the duty cycle value of output PWM signal, MCU relatively the magnitude of voltage of drive unit output is confirmed the malfunction of backlight and is reported the result. The problem of the backlight is controlled the pencil complicacy and can't be transmitted the malfunction of backlight for other controllers among the prior art is solved, reduce the automotive production cost.
Description
Technical field
The utility model relates to technical field of automotive electronics, particularly relates to a kind of car body controller with backlight regulable control.
Background technology
Along with the development of technology, electronic equipment on automobile increases day by day, increasing information is had to need to be shown to driver, display device on automobile can show various important information of vehicles to driver, make driver can understand the working condition of each parts of automobile and the state of vehicle-mounted comfortable entertainment systems at a glance, these equipment are closely bound up with vehicle drive safety again simultaneously.In addition, automobile also has numerous various gauge tap, and as window lifting switch, rearview mirror adjusting switch, various lamp switch etc., operate these switches for convenience, these switch internal also must assemble backlight.Unlatching or the closedown of existing automobile backlight are then controlled by the switch of car load position lamp: (represent that driver thinks that ambient light is excessively dark) when position lamp is opened, all backlights are opened simultaneously; (represent that driver thinks that ambient light is enough bright) when position lamp is closed, all backlights are closed simultaneously.Current automobile backlight lamp control often adopts backlight regulator directly to control the mode of backlight, backlight adopts wire harness to be connected with a backlight regulator usually, and by regulating the brightness degree of backlight regulator to car load backlight regulate and drive backlight to light.The control mode of this backlight causes wire harness complicated, and controlling functions is single, increases the production cost of automobile.Meanwhile, when backlight produces fault, the malfunction of backlight cannot be passed to other controller by Vehicle Body Bus, affect the security of automobile.
Utility model content
The utility model provides a kind of car body controller with backlight regulable control, solves the complicated problem with the malfunction of backlight being passed to other controller of backlight lamp control wire harness, improves the intelligent of backlight lamp control, reduce automobile production cost.
For achieving the above object, the utility model provides following technical scheme:
With a car body controller for backlight regulable control, comprising: backlight regulon, ADC collecting unit, MCU and driver element.
The first input end of described ADC collecting unit is connected with the output terminal of described backlight regulon, and the output terminal of described ADC collecting unit is connected with the input end of described MCU.The input end of described driver element is connected with the output terminal of described MCU, and the output terminal of described driver element is connected with the second input end of described ADC collecting unit, and the output terminal of described driver element is also connected with the input end of backlight.Described ADC collecting unit is digital signal for changing the voltage of described backlight regulon and the output of described driver element, and is transported to described MCU.Described backlight regulon is for generation of increasing the first voltage of backlight and reducing the second voltage of backlight.Described driver element controls the output of backlight driving power according to the pwm signal that described MCU exports.Described MCU is used for the times of collection of accumulative described first voltage or described second voltage, determines the dutyfactor value of described MCU output pwm signal; Described MCU, also for the magnitude of voltage that more described driver element exports, determines the malfunction of backlight and reported result.
Preferably, the dutyfactor value of described MCU output pwm signal is divided into eight grades, and every one-level of described dutyfactor value is one of fol-lowing values: 3/16,4/16,5/16,6/16,7/16,8/16,9/16,10/16.Described dutyfactor value adds up the times of collection increase of described first voltage with described MCU and increases step by step, until when dutyfactor value is 10/16, the dutyfactor value of described pwm signal stops increasing; Described dutyfactor value adds up the times of collection increase of described second voltage with described MCU and reduces step by step, until when dutyfactor value is 3/16, the dutyfactor value of described pwm signal stops reducing.
Preferably, also comprise MUX, the input end of described MUX is connected with the output terminal of described backlight regulon, and the output terminal of described MUX is connected with the input end of described ADC collecting unit, and the control end of described MUX is connected with second output terminal of described MCU; Described MUX is for expanding the data acquisition channel number of ADC collecting unit.
Preferably, described backlight regulon comprises: regulate and reduce switch, adjustment increasing switch, the first resistance and the second resistance.The input end of described first resistance connects the described output terminal regulating reduction switch, and described adjustment reduces the input end grounding of switch; The input end of described second resistance is connected with the output terminal that described adjustment strengthens switch with the output terminal of described first resistance respectively, the described input end grounding regulating increasing switch; The output terminal of described second resistance is as the output terminal of described backlight regulon.
Preferably, described driver element comprises: driving chip, pull down resistor and filter capacitor.The output terminal of described driving chip and the input end of described pull down resistor, the output head grounding of described pull down resistor; The output terminal of described driving chip is also connected with one end of described filter capacitor, the other end ground connection of described filter capacitor; When described pwm signal is high level, described driving chip exports backlight driving power; When described pwm signal is low level, described driving chip disconnects backlight driving power.
The utility model provides a kind of car body controller with backlight regulable control, by lighting of car body controller Direct driver backlight, and detect the malfunction of backlight, solve the complicated problem with the malfunction of backlight being passed to other controller of backlight lamp control wire harness in prior art, improve the intelligent of backlight lamp control, reduce automobile production cost.
Accompanying drawing explanation
In order to be illustrated more clearly in specific embodiment of the utility model, be briefly described to the accompanying drawing used required in embodiment below.
Fig. 1: be a kind of car body controller structural representation with backlight regulable control that the utility model embodiment provides;
Fig. 2: be that the backlight that the utility model embodiment adopts regulates sequential chart;
Fig. 3: be the backlight adjusting control circuit schematic diagram that the utility model embodiment provides;
Fig. 4: be the driving circuit schematic diagram that the utility model embodiment provides.
Embodiment
In order to the scheme making those skilled in the art person understand the utility model embodiment better, below in conjunction with drawings and embodiments, the utility model embodiment is described in further detail.
The complicated problem with the malfunction of backlight being passed to other controller for backlight lamp control wire harness in prior art, the utility model provides a kind of car body controller with backlight regulable control, to improve the intelligent of backlight lamp control, reduce automobile production cost.
With a car body controller for backlight regulable control, as shown in Figure 1, be a kind of car body controller structural representation with backlight regulable control that the embodiment of the present invention provides.
The car body controller of described band backlight regulable control comprises: backlight regulon, ADC collecting unit, MCU and driver element.The first input end of described ADC collecting unit is connected with the output terminal of described backlight regulon, and the output terminal of described ADC collecting unit is connected with the input end of described MCU.The input end of described driver element is connected with the output terminal of described MCU, and the output terminal of described driver element is connected with the second input end of described ADC collecting unit, and the output terminal of described driver element is also connected with the input end of backlight.Described ADC collecting unit is digital signal for changing the voltage of described backlight regulon and the output of described driver element, and is transported to described MCU.Described backlight regulon is for generation of increasing the first voltage of backlight and reducing the second voltage of backlight.Described driver element controls the output of backlight driving power according to the pwm signal that described MCU exports.Described MCU is used for the times of collection of accumulative described first voltage or described second voltage, determines the dutyfactor value of described MCU output pwm signal; Described MCU, also for the magnitude of voltage that more described driver element exports, determines the malfunction of backlight and reported result.
Visible, the car body controller that the utility model embodiment provides gathers the output voltage of the backlight regulon of backlight, carry out judgement and output pwm signal by the MCU in this car body controller, controlled the output of backlight driving power by pwm signal, realize the adjustment of backlight.
The dutyfactor value of described MCU output pwm signal is divided into eight grades, and every one-level of described dutyfactor value is one of fol-lowing values: 3/16,4/16,5/16,6/16,7/16,8/16,9/16,10/16.Described dutyfactor value adds up the times of collection increase of described first voltage with described MCU and increases step by step, until when dutyfactor value is 10/16, the dutyfactor value of described pwm signal stops increasing; Described dutyfactor value adds up the times of collection increase of described second voltage with described MCU and reduces step by step, until when dutyfactor value is 3/16, the dutyfactor value of described pwm signal stops reducing.
In practical application, the dutyfactor value of described MCU output pwm signal can carry out classification according to different automobile types, can be 16 grades, also can select 8 grades, mainly carry out classification with actual needs.The pwm signal dutycycle that the present embodiment adopts is divided into 8 grades, the cycle T of pwm signal can be divided into 16 deciles, 8 gears that the dutycycle therefrom choosing 8 kinds of deciles regulates as backlight.The present embodiment from the 3rd decile account for hold than, now duty ratio value is 3/16, the dutyfactor value that the gear of other 7 backlights adjustments is corresponding is successively respectively: 4/16,5/16,6/16,7/16,8/16,9/16,10/16, can certainly select the backlight regulation stall that other dutyfactor value is corresponding.
Concrete, when position lamp is opened, backlight is lighted, and when position lamp is closed, backlight extinguishes.When backlight by-pass cock increasing shelves are effective, brightness of backlight improves, and every effectively once backlight illumination improves a gear, designs eight shelves altogether.When backlight by-pass cock reduction shelves are effective, brightness of backlight reduces, and often effectively once, backlight illumination reduces a gear.In practical application, may exist because operating physical force is inadequate or compressing time is not enough, easily cause the misjudgment of backlight by-pass cock, can set backlight by-pass cock and connect when being greater than 50ms, then backlight by-pass cock is effective.
As shown in Figure 2, be that the backlight that the utility model embodiment adopts regulates sequential chart.Frequency f can be adopted in the present embodiment to be the pwm signal of 156HZ, and namely pwm signal cycle T is about 6400 μ s.When initial dutycycle is 3/16, backlight regulates initial brightness to be 3/16T, i.e. brightness time 1200 μ s, when backlight regulates increase one-level, pwm signal dutycycle increases by 1/16, and the brightness of backlight time increases by 400 μ s, by that analogy, until when dutycycle is 10/16, the backlight illumination time is 4000 μ s, is now the brightest shelves of brightness of backlight, if when at this moment again regulating backlight by-pass cock to strengthen shelves, then the dutycycle of pwm signal is by constant for maintenance 10/16, and namely brightness of backlight is constant.In like manner, when backlight adjustment often reduces a pole, pwm signal dutycycle reduces 1/16, and the brightness of backlight time reduces 400 μ s, by that analogy, until when dutycycle is 3/16, the brightness of backlight time is 1200 μ s, is now the shelves that brightness of backlight is the darkest, when at this moment again regulating backlight by-pass cock to reduce shelves, then the dutycycle of pwm signal is by constant for maintenance 3/16, and namely brightness of backlight is constant.
Visible, the pwm signal that described MCU will realize different duty exports, and first voltage that need produce backlight regulon and the second voltage carry out detection and judges and add up.
The car body controller of the band backlight regulable control that the present embodiment provides also comprises MUX, the input end of described MUX is connected with the output terminal of described backlight regulon, the output terminal of described MUX is connected with the input end of described ADC collecting unit, and the control end of described MUX is connected with second output terminal of described MCU; Described MUX is for expanding the data acquisition channel number of ADC collecting unit.
In actual applications, because the ADC collecting unit of car body controller needs to gather multichannel input signal.If ADC collecting unit gathers during backlight regulon output voltage always, ADC acquisition channel is occupied on the one hand, and on the other hand, this design also exists very large waste.Therefore, the present embodiment selects MUX, and the collection of ADC collecting unit to backlight regulon output voltage is controlled by MCU, if MCU receives the signal that position lamp is opened, then opens ADC collecting unit to the collection of backlight regulon output voltage.MUX in the present embodiment can adopt 74HC4851 model, certainly also can select other MUX of identical function.
As shown in Figure 3, be backlight adjusting control circuit schematic diagram that the utility model embodiment provides.Described backlight regulon comprises: regulate and reduce K switch 1, adjustment increasing K switch 2, first resistance R1 and the second resistance R2.The input end of described first resistance R1 connects the described output terminal regulating reduction switch, and described adjustment reduces the input end grounding of K switch 1; The input end of described second resistance R2 is connected with the output terminal that described adjustment strengthens switch with the output terminal of described first resistance R1 respectively, the described input end grounding regulating increasing K switch 2; The output terminal of described second resistance R2 is as the output terminal of described backlight regulon.
In actual applications, when position switch K3 closes, MCU activation point lamp L2 lights, and now backlight L1 needs to be lit.First resistance R1 of described backlight regulon often select precision be 5% 4.7K Ω resistance, described second resistance R2 often select precision be 5% 10K Ω resistance.Certainly, also can select the resistance of other resistance, mainly ensure that resistance is to the one-to-one relationship of output voltage.
As shown in Figure 4, be driving circuit schematic diagram that the utility model embodiment provides.The described driver element that the present embodiment provides comprises: driving chip, pull down resistor and filter capacitor.The output terminal of described driving chip and the input end of described pull down resistor, the output head grounding of described pull down resistor; The output terminal of described driving chip is also connected with one end of described filter capacitor, the other end ground connection of described filter capacitor; When described pwm signal is high level, described driving chip exports backlight driving power; When described pwm signal is low level, described driving chip disconnects backlight driving power.
In actual applications, described driving chip can select BTS5020 flash driving chip, and this chip drives backlight is lighted, and also has output diagnostic function, described MCU, can according to induction than the induction current calculating backlight by gathering the IS pin voltage of driving chip.Such as, K is compared in induction
iLISbe 3000.Induction current I
iS=I
l/ K
iLIS, backlight load current I
l=1A, induction current I
iS=1A/3000=0.33Ma, inductive reactance is 2K, and the detection voltage that therefore can calculate MCU is 0.66V, otherwise it is feasible for obtaining induction current by detection voltage.Visible MCU can judge whether to there is the faults such as open circuit, short circuit according to faradic size to backlight.Certainly, driving chip also can select other model as BTS5180, and the selected 47K Ω resistance of pull down resistor, filter capacitor can select 100nF electric capacity.It should be noted that, also can select multiple filter capacitor and pull down resistor, also can increase current-limiting resistance and current protection is carried out to driving chip.
The utility model provides a kind of car body controller with backlight regulable control, by lighting of car body controller Direct driver backlight, and detect the malfunction of backlight, solve the complicated problem with the malfunction of backlight being passed to other controller of backlight lamp control wire harness in prior art, improve the intelligent of backlight lamp control, reduce automobile production cost.
Structure of the present utility model, feature and action effect is described in detail above according to the embodiment shown in diagram; the foregoing is only preferred embodiment of the present utility model; but the utility model does not limit practical range with shown in drawing; every change done according to conception of the present utility model; or be revised as the Equivalent embodiments of equivalent variations; do not exceed yet instructions with diagram contain spiritual time, all should in protection domain of the present utility model.
Claims (5)
1. the car body controller with backlight regulable control, is characterized in that, comprising: backlight regulon, ADC collecting unit, MCU and driver element;
The first input end of described ADC collecting unit is connected with the output terminal of described backlight regulon, and the output terminal of described ADC collecting unit is connected with the input end of described MCU;
The input end of described driver element is connected with the output terminal of described MCU, and the output terminal of described driver element is connected with the second input end of described ADC collecting unit, and the output terminal of described driver element is also connected with the input end of backlight;
Described ADC collecting unit is digital signal for changing the voltage of described backlight regulon and the output of described driver element, and is transported to described MCU;
Described backlight regulon is for generation of increasing the first voltage of backlight and reducing the second voltage of backlight;
Described driver element controls the output of backlight driving power according to the pwm signal that described MCU exports;
Described MCU is used for the times of collection of accumulative described first voltage or described second voltage, determines the dutyfactor value of described MCU output pwm signal;
Described MCU, also for the magnitude of voltage that more described driver element exports, determines the malfunction of backlight and reported result.
2. the car body controller of band backlight regulable control according to claim 1, it is characterized in that, the dutyfactor value of described MCU output pwm signal is divided into eight grades, and every one-level of described dutyfactor value is one of fol-lowing values: 3/16,4/16,5/16,6/16,7/16,8/16,9/16,10/16;
Described dutyfactor value adds up the times of collection increase of described first voltage with described MCU and increases step by step, until when dutyfactor value is 10/16, the dutyfactor value of described pwm signal stops increasing;
Described dutyfactor value adds up the times of collection increase of described second voltage with described MCU and reduces step by step, until when dutyfactor value is 3/16, the dutyfactor value of described pwm signal stops reducing.
3. the car body controller of band backlight regulable control according to claim 1, it is characterized in that, also comprise MUX, the input end of described MUX is connected with the output terminal of described backlight regulon, the output terminal of described MUX is connected with the input end of described ADC collecting unit, and the control end of described MUX is connected with second output terminal of described MCU;
Described MUX is for expanding the data acquisition channel number of ADC collecting unit.
4. the car body controller of band backlight regulable control according to claim 1, is characterized in that, described backlight regulon comprises: regulate and reduce switch, adjustment increasing switch, the first resistance and the second resistance;
The input end of described first resistance connects the described output terminal regulating reduction switch, and described adjustment reduces the input end grounding of switch;
The input end of described second resistance is connected with the output terminal that described adjustment strengthens switch with the output terminal of described first resistance respectively, the described input end grounding regulating increasing switch;
The output terminal of described second resistance is as the output terminal of described backlight regulon.
5. the car body controller of the band backlight regulable control according to any one of Claims 1-4, it is characterized in that, described driver element comprises: driving chip, pull down resistor and filter capacitor;
The output terminal of described driving chip and the input end of described pull down resistor, the output head grounding of described pull down resistor;
The output terminal of described driving chip is also connected with one end of described filter capacitor, the other end ground connection of described filter capacitor;
When described pwm signal is high level, described driving chip exports backlight driving power;
When described pwm signal is low level, described driving chip disconnects backlight driving power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520688216.1U CN204904001U (en) | 2015-09-07 | 2015-09-07 | Automobile body controller of area regulation control in a poor light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520688216.1U CN204904001U (en) | 2015-09-07 | 2015-09-07 | Automobile body controller of area regulation control in a poor light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204904001U true CN204904001U (en) | 2015-12-23 |
Family
ID=54926164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520688216.1U Expired - Fee Related CN204904001U (en) | 2015-09-07 | 2015-09-07 | Automobile body controller of area regulation control in a poor light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204904001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411116A (en) * | 2016-06-29 | 2017-02-15 | 儒竞艾默生环境优化技术（上海）有限公司 | Correction method and system for multi-switch power factor, and electronic equipment |
-
2015
- 2015-09-07 CN CN201520688216.1U patent/CN204904001U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411116A (en) * | 2016-06-29 | 2017-02-15 | 儒竞艾默生环境优化技术（上海）有限公司 | Correction method and system for multi-switch power factor, and electronic equipment |
| CN106411116B (en) * | 2016-06-29 | 2018-10-19 | 儒竞艾默生环境优化技术（上海）有限公司 | A kind of Multi- Switch power factor correcting method, system and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE19514738B4 (en) | Generator control device for motor vehicles | |
| CN102248922A (en) | Automobile backlight control system and control method thereof | |
| CN206547212U (en) | The control system and vehicle of in-car atmosphere lamp | |
| CN205812436U (en) | A kind of sensing lamp can lighted according to adjacent sequential | |
| CN107105556A (en) | A kind of control system and its method for adjusting relay indicating light brightness | |
| CN104602411A (en) | LED brightness and chroma consistency adjusting device and method | |
| CN204904001U (en) | Automobile body controller of area regulation control in a poor light | |
| CN204887569U (en) | Automatic regulating apparatus is shaded in car | |
| CN213501798U (en) | Touch control type automobile window light adjusting glass | |
| CN201457064U (en) | Electric control unit of power shifting gear box of tractor | |
| CN102963295A (en) | Backlight circuit of automobile combination instrument and backlight automatic adjustment method thereof | |
| CN101242696B (en) | Self-adapted car headlight control device | |
| EP2745374B1 (en) | Operation of an illuminant at an autonomous energy store | |
| CN203063789U (en) | Daytime running light control device of passenger car | |
| CN204472670U (en) | Based on the battery-driven car headlight control system of iic bus | |
| CN202500430U (en) | Intelligent automobile power window switch circuit compatible with mechanical power window switch wire harness | |
| CN212838457U (en) | Fan lamp and control system thereof | |
| CN201281933Y (en) | Device for automatically adjusting display lightness | |
| CN205311527U (en) | Automobile body control module of pure electric vehicles 12V system | |
| CN107489764A (en) | A kind of electronics lever circuit of auto-manual selector | |
| CN204392641U (en) | A kind of LED luminance and colourity consistency adjusting device | |
| CN204037431U (en) | A kind of reversing auxiliary lighting apparatus | |
| CN211128344U (en) | Electric motor car light control system | |
| CN202443726U (en) | Backlight adaptively adjustable intelligent rearview mirror | |
| CN202738204U (en) | Dimming circuit with dimming wire and dimming control module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20190907 |