CN203301806U - Automatic dimming signal lamp - Google Patents
Automatic dimming signal lamp Download PDFInfo
- Publication number
- CN203301806U CN203301806U CN2013202492938U CN201320249293U CN203301806U CN 203301806 U CN203301806 U CN 203301806U CN 2013202492938 U CN2013202492938 U CN 2013202492938U CN 201320249293 U CN201320249293 U CN 201320249293U CN 203301806 U CN203301806 U CN 203301806U
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- light
- pwm
- sensitive element
- voltage
- chip microcomputer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses an automatic dimming signal lamp which is formed by sequentially connected a VCC, a photosensitive element, a single chip microcomputer, a PWM pulse width modulation unit, an LED drive unit and a light-emitting unit. A reference power supply provides current. The photosensitive element collects voltage to ground. The single chip microcomputer carries out analog-to-digital conversion on the voltage to ground, which is collected by the photosensitive element, and the voltage is converted into photosensitive element feedback voltage. The PWM pulse width modulation unit compares the photosensitive element feedback voltage with different preset LED lamp brightness output thresholds. If the photosensitive element feedback voltage exceeds a corresponding threshold, at an output end, PWM signals which correspondingly output the same frequency and different duty cycles to the LED drive unit. The LED drive unit uses the PWM duty cycle to adjust the magnitude of the current transmitted to an LED lamp. According to the utility model, the lighting power of the signal lamp changes with the change of the ambient light intensity, thus energy is saved and the visual comfort is improved.
Description
Technical field
The utility model relates to the signal lamp technical field, relates in particular to a kind of type signal lamp with an automatic light meter.
Background technology
Development along with World Economics, the application of signal lamp also constantly increases, radix is disregarded in the application of field of traffic signal lamp especially, but common signal lamp is still the traditional mode illumination at present, can't in time regulate with the variation of environmental light brightness lamplight brightness, namely in the zone of environmental light brightness abundance, reduce lighting power, in the zone of environmental light brightness deficiency, improve lighting power, caused the waste of the energy.
The utility model content
For above-mentioned defect, the utility model provides a kind of type signal lamp with an automatic light meter, makes the signal lamp lighting power change with the variation of ambient light intensity, thereby reaches the saving energy, increases the euphorosia sense.
To achieve these goals, the technical solution of the utility model is:
a kind of type signal lamp with an automatic light meter, comprise the reference power supply VCC, light-sensitive element, the single-chip microcomputer of built-in D/A conversion unit, PWM pwm unit, LED driver element, the luminescence unit that connect successively, described luminescence unit is comprised of a plurality of LED lamps, described reference power supply is supplied with the certain electric current of luminescence unit, described light-sensitive element is monitored the intensity information of extraneous natural daylight automatically, gather voltage to earth, the single-chip microcomputer of described built-in D/A conversion unit carries out analog-to-digital conversion with the voltage to earth of light-sensitive element collection and changes into the light-sensitive element feedback voltage, the described PWM pwm unit brightness output threshold values that the light-sensitive element feedback voltage is different from the LED lamp that sets in advance compares, while if the light-sensitive element feedback voltage being detected over corresponding threshold values, in output is delivered to the LED driver element to the pwm signal of corresponding output same frequency different duty, described LED driver element utilizes the duty of PWM recently to regulate the size of current that is transferred to the LED lamp.
Further, divider resistance of described light-sensitive element one end series winding.
Further, the single-chip microcomputer of described built-in D/A conversion unit is the STM8S103 single-chip microcomputer, has the ADC of 10 ± 1LSB.
Type signal lamp with an automatic light meter of the present utility model, send single-chip microcomputer to after the intensity signal of light-sensitive element induction natural daylight, single-chip microcomputer judges the height of a plurality of LED lamps of rear generation pwm signal adjustment by analysis, zone in the environmental light brightness abundance reduces lighting power, lighting power is improved in zone in the environmental light brightness deficiency, thereby reach the saving energy, increase the purpose of euphorosia sense.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is further described below in conjunction with accompanying drawing and specific embodiment.
as shown in Figure 1, type signal lamp with an automatic light meter of the present utility model, comprise the reference power supply VCC, light-sensitive element, the single-chip microcomputer of built-in D/A conversion unit, PWM pwm unit, LED driver element, the luminescence unit that connect successively, described luminescence unit is comprised of a plurality of LED lamps, described reference power supply is supplied with the certain electric current of luminescence unit, described light-sensitive element is monitored the intensity information of extraneous natural daylight automatically, gather voltage to earth, the single-chip microcomputer of described built-in D/A conversion unit carries out analog-to-digital conversion with the voltage to earth of light-sensitive element collection and changes into the light-sensitive element feedback voltage, the described PWM pwm unit brightness output threshold values that the light-sensitive element feedback voltage is different from the LED lamp that sets in advance compares, while if the light-sensitive element feedback voltage being detected over corresponding threshold values, in output is delivered to the LED driver element to the pwm signal of corresponding output same frequency different duty, described LED driver element utilizes the duty of PWM recently to regulate the size of current that is transferred to the LED lamp.
Divider resistance of described light-sensitive element one end series winding, prevent that the light-sensitive element resistance is too low and burn out.
The single-chip microcomputer of described built-in D/A conversion unit is the STM8S103 single-chip microcomputer, has the ADC of 10 ± 1LSB.
The above is only a kind of execution mode of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model know-why; can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (3)
1. type signal lamp with an automatic light meter is characterized in that: this tally circuit comprises reference power supply VCC, light-sensitive element, the single-chip microcomputer of built-in D/A conversion unit, PWM pwm unit, LED driver element, the luminescence unit that connects successively, described luminescence unit is comprised of a plurality of LED lamps, described reference power supply is supplied with the certain electric current of luminescence unit, described light-sensitive element is monitored the intensity information of extraneous natural daylight automatically, gather voltage to earth, the single-chip microcomputer of described built-in D/A conversion unit carries out analog-to-digital conversion with the voltage to earth of light-sensitive element collection and changes into the light-sensitive element feedback voltage, the described PWM pwm unit brightness output threshold values that the light-sensitive element feedback voltage is different from the LED lamp that sets in advance compares, while if the light-sensitive element feedback voltage being detected over corresponding threshold values, in output is delivered to the LED driver element to the pwm signal of corresponding output same frequency different duty, described LED driver element utilizes the duty of PWM recently to regulate the size of current that is transferred to the LED lamp.
2. type signal lamp with an automatic light meter according to claim 1, is characterized in that: divider resistance of described light-sensitive element one end series winding.
3. type signal lamp with an automatic light meter according to claim 1 and 2, it is characterized in that: the single-chip microcomputer of described built-in D/A conversion unit is the STM8S103 single-chip microcomputer, has the ADC of 10 ± 1LSB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202492938U CN203301806U (en) | 2013-05-07 | 2013-05-07 | Automatic dimming signal lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202492938U CN203301806U (en) | 2013-05-07 | 2013-05-07 | Automatic dimming signal lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301806U true CN203301806U (en) | 2013-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202492938U Expired - Fee Related CN203301806U (en) | 2013-05-07 | 2013-05-07 | Automatic dimming signal lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203301806U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744463A (en) * | 2013-11-30 | 2014-04-23 | 成都岷创科技有限公司 | Variable reference power supply capable of detecting duty ratio |
| CN104113962A (en) * | 2014-05-04 | 2014-10-22 | 麦克奥迪实业集团有限公司 | Different LED illumination modules judged according to voltage |
| CN104837266A (en) * | 2015-05-14 | 2015-08-12 | 苏州鸿益丰光电有限公司 | LED daylight induction lamp intelligent control apparatus and method |
| CN107284348A (en) * | 2017-07-05 | 2017-10-24 | 武汉市技领科技有限公司 | Automatic light-supplementing method and system for Car license recognition |
| CN111641789A (en) * | 2020-06-11 | 2020-09-08 | 云从科技集团股份有限公司 | Multi-camera system light supplement control method, device, equipment and medium |
| CN112443822A (en) * | 2019-08-29 | 2021-03-05 | 贵州师范学院 | Novel winding structure lamp with adjustable brightness |
-
2013
- 2013-05-07 CN CN2013202492938U patent/CN203301806U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744463A (en) * | 2013-11-30 | 2014-04-23 | 成都岷创科技有限公司 | Variable reference power supply capable of detecting duty ratio |
| CN103744463B (en) * | 2013-11-30 | 2016-02-10 | 成都岷创科技有限公司 | The variable reference power supply of dutycycle can be detected |
| CN104113962A (en) * | 2014-05-04 | 2014-10-22 | 麦克奥迪实业集团有限公司 | Different LED illumination modules judged according to voltage |
| CN104837266A (en) * | 2015-05-14 | 2015-08-12 | 苏州鸿益丰光电有限公司 | LED daylight induction lamp intelligent control apparatus and method |
| CN107284348A (en) * | 2017-07-05 | 2017-10-24 | 武汉市技领科技有限公司 | Automatic light-supplementing method and system for Car license recognition |
| CN112443822A (en) * | 2019-08-29 | 2021-03-05 | 贵州师范学院 | Novel winding structure lamp with adjustable brightness |
| CN111641789A (en) * | 2020-06-11 | 2020-09-08 | 云从科技集团股份有限公司 | Multi-camera system light supplement control method, device, equipment and medium |
| CN111641789B (en) * | 2020-06-11 | 2021-09-28 | 云从科技集团股份有限公司 | Multi-camera system light supplement control method, device, equipment and medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20160507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |