CN103391670A - Lamplight beam angle control system and adjusting method - Google Patents
Lamplight beam angle control system and adjusting method Download PDFInfo
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- CN103391670A CN103391670A CN2013102918066A CN201310291806A CN103391670A CN 103391670 A CN103391670 A CN 103391670A CN 2013102918066 A CN2013102918066 A CN 2013102918066A CN 201310291806 A CN201310291806 A CN 201310291806A CN 103391670 A CN103391670 A CN 103391670A
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Abstract
The invention provides a lamplight beam angle control system. The lamplight beam angle control system comprises a rotational structure with is connected with a lighting device, a sliding resistor module with a movable tap, a control chip and a motor; the motor can drive the rotational structure to rotate to change the beam angle of the lighting device. According to the lamplight beam angle control system, the control chip controls the motor to rotate, the motor controls the lighting device to rotate to change the beam angle of the lighting device, and feeds back voltage changes caused by the angle change value to the control chip, and the lighting device can automatically adjust to a preset beam angle through the circulation function of a negative feedback. The invention further provides a lamplight beam angle adjusting method and a lighting system of headlights of an automobile.
Description
Technical field
The invention belongs to lighting field, relate to a kind of a kind of method of light-illuminating angle control system, particularly light-illuminating angle control system and adjusting light-illuminating angle.
Background technology
Dimmer refers to change the luminous flux of light source in lighting device, a kind of electric device of brightness adjusting level.The basic principle of dimmer is to change the current effective value of input light source to reach the purpose of light modulation.
Existing dimmer all can only be regulated the exposure intensity of light, yet at some application scenarios, when for example airport, megastore and use were on automobile, the irradiating angle of lighting device also needed to adjust thereupon.When for example dimmer used on automobile, automobile was in the turning process, and the irradiating angle of headlight also needs to adjust thereupon, otherwise during automobile turning, the range of exposures of headlight diminishes, and the range of observation that affects the driver easily leads to traffic accident.
Summary of the invention
Technical problem to be solved by this invention is,, for the deficiencies in the prior art, proposes a kind of light-illuminating angle control system.
The technical scheme that the present invention solves its technical problem employing is to propose a kind of light-illuminating angle control system, and it comprises the rotational structure that is fixedly connected with lighting device, swept resistance module, control chip and the motor with removable tap; Thereby described motor can drive rotational structure and rotate and to make the lighting device irradiating angle change, thereby described rotational structure drives the tap of swept resistance module, moves and makes tap voltage value size change; Described control chip receives described tap voltage value and with the predeterminated voltage value, compares,, if the tap voltage value is exported control signal greater than the predeterminated voltage value and made the motor forward, if exporting control signal less than the predeterminated voltage value, the tap voltage value make the motor counter-rotating until described tap voltage value equals the predeterminated voltage value.
Further; also comprise overvoltage and reverse protection module; described overvoltage protective module comprises overvoltage diode, electric capacity and backward diode; described overvoltage diode is connected rear with Capacitance parallel connection and backward diode is connected in series, and overvoltage diode cathode, capacitance cathode and backward diode negative pole equipotential connect.
Further, described swept resistance module comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, swept resistance and detects resistance; Described swept resistance two ends are connected in series with the first resistance first end and the second resistance first end respectively, described swept resistance tap terminals is connected to and detects resistance one end, detect the resistance other end and be connected to respectively the 3rd resistance first end and the 4th resistance first end, described the 3rd resistance the second end is connected with first resistance the second end, and described the 4th resistance the second end is connected with second resistance the second end.
Further, described first resistance 30-50K ohm, second resistance 500-700 ohm, the 3rd resistance 1-2K ohm, the 4th resistance 30-50 ohm; The ratio of described detection resistance and swept resistance maximum value is 1/20 to 1/50.
The present invention also provides a kind of method of regulating the light-illuminating angle, and it comprises step:
Obtain the predeterminated voltage value according to default irradiating angle;
Actual voltage value corresponding to the actual irradiating angle of lighting device is passed to control chip;
Control chip comparison actual voltage value and predeterminated voltage value are also controlled revolution;
Revolution drives the rotation of lighting device irradiating angle and makes simultaneously actual voltage value change;
When actual voltage value equals the predeterminated voltage value, motor stops operating.
Further, described actual voltage value is swept resistance tap voltage value; Thereby the tap that described lighting device irradiating angle rotation drives swept resistance is moved and is made the tap voltage value change.
The present invention also provides a kind of automobile headlamp illuminator, and it comprises above-mentioned light-illuminating angle control system.
The present invention controls revolution by control chip, the motor control lighting device rotates that the light angle make lighting device changes and then voltage change that this angle changing value is brought feeds back to control chip, by this degenerative ringing, makes lighting device can be adjusted to automatically default light angle.When the present invention is applied to the automobile headlamp illuminator, when automobile turning, the irradiating angle of headlight can adjust accordingly according to the angle of turn of automobile the range of exposures that makes headlight and can not change because of turning, make driver's visual line of sight not change, strengthened security performance.
Description of drawings
Fig. 1 is the theory diagram of light-illuminating angle control system in a preferred embodiment of the present invention;
Fig. 2 is the circuit diagram of overvoltage and reverse protection module in a preferred embodiment of the present invention;
Fig. 3 is the circuit diagram of swept resistance module in a preferred embodiment of the present invention;
Fig. 4 regulates the schematic flow sheet of the method for light-illuminating angle in a preferred embodiment of the present invention.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
Please refer to Fig. 1, Fig. 1 is the theory diagram of light-illuminating angle control system of the present invention.In Fig. 1, light-illuminating angle control system comprises rotational structure 10, the swept resistance module 20 with removable tap 21, control chip 30 and the motor 40 that lighting device is fixedly connected with.
Thereby described motor 40 can drive rotational structure 10 and rotate and make the lighting device irradiating angle change, thereby described rotational structure 10 drives swept resistance module taps 21, moves and makes tap voltage value size change; Described control chip 30 receives described tap 21 magnitudes of voltage and with the predeterminated voltage value, compares,, if tap 21 magnitudes of voltage are exported control signal greater than the predeterminated voltage value and made motor 40 forwards, if exporting control signal less than the predeterminated voltage value, tap 21 magnitudes of voltage make motor 40 counter-rotatings until described tap 21 magnitudes of voltage equal the predeterminated voltage value.
In the present invention, control chip gathers the tap voltage value and also controls revolution, thus rotational structure control tap and move and be subject to again motor control simultaneously and form a negative feedback circulation, make rotating mechanism more promptly automatic rotating to default light angle.
Please referring again to Fig. 1, in a preferred embodiment, the present invention also comprises oppositely and overvoltage protective module 10.Oppositely and overvoltage protective module 10 be connected to the direct-current input power supplying module,, for the protection of control chip, make the voltage that exports control chip to can not suddenly change or oppositely.Fig. 2 shows the circuit diagram of overvoltage and reverse protection module.
In Fig. 2; overvoltage and reverse protection module comprise overvoltage diode D1, capacitor C 1 and backward diode D2; described overvoltage diode D1 and capacitor C 1 are connected in parallel rear and backward diode D2 is connected in series, and overvoltage diode D1 negative pole, capacitor C 1 positive pole and backward diode D2 negative pole equipotential connect.When the voltage reversal erroneous input, backward diode D2 stops this reverse voltage, and capacitor C 1 is used for filtering and afterflow, thereby overvoltage diode D2 is used for when electric voltage over press self breakdown burning voltage.
In a preferred embodiment, for the tap voltage value that makes control chip obtain from the tap of swept resistance module is more accurate, the swept resistance module by the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, swept resistance R5 and detect resistance R 6 totally 6 resistive elements form.
As shown in Figure 3, swept resistance R5 two ends are connected in series with the first resistance R 1 first end and the second resistance R 2 first ends respectively, swept resistance R5 tap terminals is connected to and detects resistance R 6 one ends, detect resistance R 6 other ends and be connected to respectively the 3rd resistance R 3 first ends and the 4th resistance R 4 first ends, the 3rd resistance R 3 second ends are connected with the first resistance R 1 second end, and the 4th resistance R 4 second ends are connected with the second resistance R 2 second ends.
When swept resistance R5 tap is moved, flow through the current value that detects resistance R 6 and change thereupon, make current value be converted into the tap voltage value by detecting resistance R 6.The variation of choosing the current value of flow detection resistance while making the swept resistance tap move of the first different resistances of resistance to the four resistance is more responsive, and is more accurate thereby small curent change all can be detected the precision that makes the rotating mechanism rotational angle.
More preferably, learn after great many of experiments, when the value of R1-R6 is following, the current precision that the detection resistance detection arrives is the most accurate, the angle control precision of rotating mechanism can guarantee in 1 °: state first resistance 30-50K ohm, second resistance 500-700 ohm, the 3rd resistance 1-2K ohm, the 4th resistance 30-50 ohm; The ratio of described detection resistance and swept resistance maximum value is 1/20 to 1/50.
The present invention also provides a kind of method of regulating the light-illuminating angle, and its schematic flow sheet as shown in Figure 4.In Fig. 4, the method for regulating the light-illuminating angle comprises step:
Obtain the predeterminated voltage value according to default irradiating angle;
Actual voltage value corresponding to the actual irradiating angle of lighting device is passed to control chip;
Control chip comparison actual voltage value and predeterminated voltage value are also controlled revolution;
Revolution drives the rotation of lighting device irradiating angle and makes simultaneously actual voltage value change;
When actual voltage value equals the predeterminated voltage value, motor stops operating.
Preferably, actual voltage value is swept resistance tap voltage value; Thereby the tap that described lighting device irradiating angle rotation drives swept resistance is moved and is made the tap voltage value change.
The present invention also provides a kind of automobile headlamp illuminator, and it comprises above-mentioned light-illuminating angle control system.When motor turning, the irradiating angle of headlight can adjust accordingly according to the angle of turn of automobile the range of exposures that makes headlight and can not change because of turning, makes driver's visual line of sight not change, and has strengthened security performance.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (7)
1. a light-illuminating angle control system, is characterized in that: comprise the rotational structure that is fixedly connected with lighting device, swept resistance module, control chip and the motor with removable tap; Thereby described motor can drive rotational structure and rotate and to make the lighting device irradiating angle change, thereby described rotational structure drives the tap of swept resistance module, moves and makes tap voltage value size change; Described control chip receives described tap voltage value and with the predeterminated voltage value, compares,, if the tap voltage value is exported control signal greater than the predeterminated voltage value and made the motor forward, if exporting control signal less than the predeterminated voltage value, the tap voltage value make the motor counter-rotating until described tap voltage value equals the predeterminated voltage value.
2. light-illuminating angle control system according to claim 1; it is characterized in that: also comprise overvoltage and reverse protection module; described overvoltage protective module comprises overvoltage diode, electric capacity and backward diode; described overvoltage diode is connected rear with Capacitance parallel connection and backward diode is connected in series, and overvoltage diode cathode, capacitance cathode and backward diode negative pole equipotential connect.
3. light-illuminating angle control system according to claim 1 and 2 is characterized in that: described swept resistance module comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, swept resistance and detects resistance; Described swept resistance two ends are connected in series with the first resistance first end and the second resistance first end respectively, described swept resistance tap terminals is connected to and detects resistance one end, detect the resistance other end and be connected to respectively the 3rd resistance first end and the 4th resistance first end, described the 3rd resistance the second end is connected with first resistance the second end, and described the 4th resistance the second end is connected with second resistance the second end.
4. light-illuminating angle control system according to claim 3, is characterized in that: described first resistance 30-50K ohm, second resistance 500-700 ohm, the 3rd resistance 1-2K ohm, the 4th resistance 30-50 ohm; The ratio of described detection resistance and swept resistance maximum value is 1/20 to 1/50.
5. method of regulating the light-illuminating angle, it comprises step:
Obtain the predeterminated voltage value according to default irradiating angle;
Actual voltage value corresponding to the actual irradiating angle of lighting device is passed to control chip;
Control chip comparison actual voltage value and predeterminated voltage value are also controlled revolution;
Revolution drives the rotation of lighting device irradiating angle and makes simultaneously actual voltage value change;
When actual voltage value equals the predeterminated voltage value, motor stops operating.
6. the method for adjusting light-illuminating angle according to claim 5, it is characterized in that: described actual voltage value is swept resistance tap voltage value; Thereby the tap that described lighting device irradiating angle rotation drives swept resistance is moved and is made the tap voltage value change.
7. automobile headlamp illuminator, it comprises the described light-illuminating angle of claim 1 to 4 any one control system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291806.6A CN103391670B (en) | 2013-07-10 | 2013-07-10 | A kind of method of light-illuminating angle control system and adjustment light-illuminating angle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310291806.6A CN103391670B (en) | 2013-07-10 | 2013-07-10 | A kind of method of light-illuminating angle control system and adjustment light-illuminating angle |
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| CN103391670A true CN103391670A (en) | 2013-11-13 |
| CN103391670B CN103391670B (en) | 2015-09-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105916273A (en) * | 2016-05-23 | 2016-08-31 | 珠海格力电器股份有限公司 | Light control method and device and household appliance |
| CN111031642A (en) * | 2019-10-31 | 2020-04-17 | 惠州市德赛西威汽车电子股份有限公司 | Control circuit and control system for adjusting angle of car lamp |
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| CN1416035A (en) * | 2001-09-04 | 2003-05-07 | 中华研升科技股份有限公司 | Device and method for automatic controlling visual angle in monitoring equipment for vehicle |
| CN2673735Y (en) * | 2003-12-19 | 2005-01-26 | 王维德 | Novel angle controller of automobile rearview mirror |
| CN1915711A (en) * | 2005-08-15 | 2007-02-21 | 堤维西交通工业股份有限公司 | Method for driving rotator of car light |
| CN201750397U (en) * | 2009-12-18 | 2011-02-16 | 上海富伸光电有限公司 | Slow-start AC motor driving device |
| CN202764812U (en) * | 2012-09-19 | 2013-03-06 | 宁波市富来电子科技有限公司 | Dimming device of headlamp of automobile |
| CN102954439A (en) * | 2011-12-22 | 2013-03-06 | 广州彩熠灯光有限公司 | Color disc for stage lamps, lamp with color disc, and method for controlling lamp |
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2013
- 2013-07-10 CN CN201310291806.6A patent/CN103391670B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416035A (en) * | 2001-09-04 | 2003-05-07 | 中华研升科技股份有限公司 | Device and method for automatic controlling visual angle in monitoring equipment for vehicle |
| CN2673735Y (en) * | 2003-12-19 | 2005-01-26 | 王维德 | Novel angle controller of automobile rearview mirror |
| CN1915711A (en) * | 2005-08-15 | 2007-02-21 | 堤维西交通工业股份有限公司 | Method for driving rotator of car light |
| CN201750397U (en) * | 2009-12-18 | 2011-02-16 | 上海富伸光电有限公司 | Slow-start AC motor driving device |
| CN102954439A (en) * | 2011-12-22 | 2013-03-06 | 广州彩熠灯光有限公司 | Color disc for stage lamps, lamp with color disc, and method for controlling lamp |
| CN202764812U (en) * | 2012-09-19 | 2013-03-06 | 宁波市富来电子科技有限公司 | Dimming device of headlamp of automobile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105916273A (en) * | 2016-05-23 | 2016-08-31 | 珠海格力电器股份有限公司 | Light control method and device and household appliance |
| CN105916273B (en) * | 2016-05-23 | 2019-02-19 | 珠海格力电器股份有限公司 | Light control method and device and household appliance |
| CN111031642A (en) * | 2019-10-31 | 2020-04-17 | 惠州市德赛西威汽车电子股份有限公司 | Control circuit and control system for adjusting angle of car lamp |
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| CN103391670B (en) | 2015-09-16 |
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