CN103889095A - Environment-friendly LED illumination time-delay circuit - Google Patents
Environment-friendly LED illumination time-delay circuit Download PDFInfo
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- CN103889095A CN103889095A CN201210560331.1A CN201210560331A CN103889095A CN 103889095 A CN103889095 A CN 103889095A CN 201210560331 A CN201210560331 A CN 201210560331A CN 103889095 A CN103889095 A CN 103889095A
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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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Abstract
The invention discloses an environment-friendly LED illumination time-delay circuit which comprises a DC power source, an LED lamp group, a charging/discharging detection circuit and a time-delay control circuit. The DC power source has at least two circuit output terminals which are connected in parallel, wherein one circuit output terminal is electrically connected to the LED lamp group; and the other circuit output terminal is electrically connected to the charging/discharging detection circuit so as to form standby electric energy; and the time-delay control circuit is electrically connected to the charging/discharging detection circuit and is capable of controlling the charging/discharging detection circuit to turn on and off the LED lamp group. Therefore, when the DC power source stops supplying power to the LED lamp group, the standby electric energy formed by the charging/discharging detection circuit can supply power to the LED lamp group under the control of the time-delay control circuit, thereby prolonging the illumination time of the LED lamp group effectively.
Description
Technical field
The present invention relates to LED lighting technical field, a kind of environment-friendly type LED lighting delay circuit is specifically provided.
Background technology
In prior art, illumination delayed control circuit is to adopt battery as stand-by power supply mostly, but not only complex structure of the charging circuit of battery, and also the charging interval is long, cycle life is very short, is not well positioned to meet instructions for use.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of environment-friendly type LED lighting delay circuit, this circuit structure is optimized, and can effectively extend the lighting hours of LED lamp group.
The present invention for the technical scheme that solves its technical problem and adopt is: a kind of environment-friendly type LED lighting delay circuit, comprise DC power supply, LED lamp group, charge/discharge testing circuit and delay control circuit, wherein, described DC power supply is with circuit output end that at least two-way is in parallel, one circuit output end is electrically connected on described LED lamp group, another circuit output end is electrically connected on described charge/discharge testing circuit, to form stand-by electric energy; Described delay control circuit is electrically connected on described charge/discharge testing circuit, and can control LED lamp group work described in described charge/discharge testing circuit break-make.
As a further improvement on the present invention, described LED lamp group comprises first and second LED lamp of serial connection mutually, and wherein, one end of described the 2nd LED lamp is electrically connected on described DC power supply through a described LED lamp, the other end ground connection of described the 2nd LED lamp.
As a further improvement on the present invention, described charge/discharge testing circuit comprises charging current limiter resistance, first, two detect resistance, low frequency silicon diode, super farad capacitor and first, two-transistor, wherein, one end of described charging current limiter resistance is electrically connected on described DC power supply, described second one end of detecting resistance is electrically connected on the other end of described charging current limiter resistance by described the first detection resistance, and described second detects the other end ground connection of resistance, the anode of described low frequency silicon diode is also electrically connected on the other end of described charging current limiter resistance, the cathodic electricity of described low frequency silicon diode is connected in the positive pole of described super farad capacitor, the minus earth of described super farad capacitor, the emitter of another described the first transistor and the collector electrode of described transistor seconds are electrically connected on the positive pole of described super farad capacitor respectively, the base stage of described the first transistor is electrically connected on one end of described the second detection resistance, and the emitter of described transistor seconds is electrically connected on one end of described the 2nd LED lamp.
As a further improvement on the present invention, described delay control circuit comprises timing capacitor circuit and mono-stable timing circuit, described timing capacitor circuit includes first and second timing capacitor and first and second Timed current-limiting resistance, and described mono-stable timing circuit includes time-base circuit; Wherein, the positive pole of described first and second timing capacitor is the corresponding collector electrode that is electrically connected on described the first transistor by described first and second Timed current-limiting resistance respectively, the equal ground connection of negative pole of described first and second timing capacitor; 4 pin of described time-base circuit and 8 pin are all electrically connected on the collector electrode of described the first transistor, 3 pin of described time-base circuit are electrically connected on the base stage of described transistor seconds, 2 pin of described time-base circuit are electrically connected between anodal and first o'clock current-limiting resistance of described the first timing capacitor, 6 pin of described time-base circuit and 7 pin are in parallel and are electrically connected between anodal and second o'clock current-limiting resistance of described the second timing capacitor, and 1 pin of described time-base circuit and the equal ground connection of 5 pin.
The invention has the beneficial effects as follows: this circuit comprises DC power supply, LED lamp group, charge/discharge testing circuit and delay control circuit, wherein, described DC power supply is with circuit output end that at least two-way is in parallel, one circuit output end is electrically connected on described LED lamp group, to the direct powered lighting of LED lamp group, another circuit output end is electrically connected on described charge/discharge testing circuit, to form stand-by electric energy; Described delay control circuit is electrically connected on described charge/discharge testing circuit, and control described charge/discharge testing circuit can break-make described in the work of LED lamp group; In the time that DC power supply stops LED lamp group to power, the stand-by electric energy that described charge/discharge testing circuit forms can be powered to LED lamp group under the control of delay control circuit, has effectively extended the lighting hours of LED lamp group like this.
Accompanying drawing explanation
Fig. 1 is circuit theory schematic diagram of the present invention.
Embodiment
Below with reference to figure to a preferred embodiment of the present invention will be described in detail.
A kind of environment-friendly type LED lighting delay circuit of the present invention, comprise DC power supply DC, LED lamp group, charge/discharge testing circuit and delay control circuit, wherein, described DC power supply is with circuit output end that at least two-way is in parallel, one circuit output end is electrically connected on described LED lamp group, directly powered lighting, another circuit output end is electrically connected on described charge/discharge testing circuit, to form stand-by electric energy; Described delay control circuit is electrically connected on described charge/discharge testing circuit, and can control LED lamp group work described in described charge/discharge testing circuit break-make.
In the present embodiment, described LED lamp group comprises a LED lamp LED1, the 2nd LED lamp LED2 of serial connection mutually, wherein, one end of described the 2nd LED lamp LED2 is electrically connected on described DC power supply, the other end ground connection of described the 2nd LED lamp LED2 through a described LED lamp LED1.
Described charge/discharge testing circuit comprises charging current limiter resistance R 6, first detects resistance R 1, second detects resistance R 2, low frequency silicon diode D1, super farad capacitor C4, the first transistor Q1 and transistor seconds Q2, wherein, one end of described charging current limiter resistance R 6 is electrically connected on described DC power supply, described second one end of detecting resistance R 2 is electrically connected on the other end of described charging current limiter resistance R 6 by described the first detection resistance R 1, and described second detects the other end ground connection of resistance R 2, the anode of described low frequency silicon diode D1 is also electrically connected on the other end of described charging current limiter resistance R 6, the cathodic electricity of described low frequency silicon diode D1 is connected in the positive pole of described super farad capacitor C4, the minus earth of described super farad capacitor C4, the collector electrode of the emitter of another described the first transistor Q1 and described transistor seconds Q2 is electrically connected on the positive pole of described super farad capacitor C4 respectively, the base stage of described the first transistor Q1 is electrically connected on one end of described the second detection resistance R 2, and the emitter of described transistor seconds Q2 is electrically connected on one end of described the 2nd LED lamp LED2.
Described delay control circuit comprises timing capacitor circuit and mono-stable timing circuit, described timing capacitor circuit includes the first timing capacitor C1, the second timing capacitor C2, the first Timed current-limiting resistance R 3 and the second Timed current-limiting resistance R 4, and described mono-stable timing circuit includes this example of time-base circuit U1(and adopts 555 serial timers); Wherein, the positive pole of described first and second timing capacitor is the corresponding collector electrode that is electrically connected on described the first transistor Q1 by described first and second Timed current-limiting resistance respectively, the equal ground connection of negative pole of described first and second timing capacitor; 4 pin of described time-base circuit U1 and 8 pin are all electrically connected on the collector electrode of described the first transistor Q1,3 pin of described time-base circuit U1 are electrically connected on the base stage of described transistor seconds Q2 by the 3rd current-limiting resistance R5,2 pin of described time-base circuit U1 are electrically connected between anodal and first o'clock current-limiting resistance R3 of described the first timing capacitor C1,6 pin of described time-base circuit U1 and 7 pin are in parallel and are electrically connected between anodal and second o'clock current-limiting resistance R4 of described the second timing capacitor C2, and 1 pin of described time-base circuit U1 and the equal ground connection of 5 pin.In the present embodiment, described time-base circuit U1's: 1 pin is circuit ground GND, and 2 pin are trigger end, and 3 pin are output, and 4 pin are reset terminal, and 5 pin are for controlling voltage, and 6 pin are thresholding (threshold value), and 7 pin are discharge end, and 8 pin are positive source VCC.
Operation principle of the present invention is: 1, when circuit is during in normal power-up, DC power supply DC is directly to first and second LED lamp power supply, first and second LED lamp is all in normal illumination state, and now, the base stage of the first transistor Q1 is high level, be the first transistor Q1 in cut-off state, accordingly, 3 pin of time-base circuit U1 are low level, and time-base circuit U1 does not carry out work, therefore transistor seconds Q2 is just in cut-off state, and super farad capacitor C4 does not discharge; Separately, after power on circuitry, by charging current limiter resistance R 6 and low frequency silicon diode D1, super farad capacitor C4 is charged, in the time that the cathode voltage of super farad capacitor C4 equals the voltage of low frequency silicon diode D1 negative electrode, super farad capacitor C4 charging cut-off; This is the charged state of described charge/discharge testing circuit.
2, when circuit is during in power-off, the base stage of the first transistor Q1 is low level, the first transistor Q1 conducting, corresponding time-base circuit U1 is initially located in operating state, now, the first timing capacitor C1 is charged to rapidly the collector voltage of the first transistor Q1 by the first Timed current-limiting resistance R 3, the second timing capacitor C2 be slowly charged to through 4 quilts of the second Timed current-limiting resistance R the first transistor Q1 collector voltage 2/3, in the process of being charged at the second timing capacitor C2, time base chip U1 output 3 pin in high level state, the base stage of corresponding transistor seconds Q2 is also in high level state, therefore transistor seconds Q2 conducting, the 2nd LED lamp LED2 just can be lit, this is the discharge condition of described charge/discharge testing circuit.But when the voltage of the second timing capacitor C2 exceed the first transistor Q1 collector voltage 2/3 time, time base chip U1 output 3 pin just can be in low level state, the base stage of corresponding transistor seconds Q2 is also in low level state, thereby transistor seconds Q2 is cut off, the 2nd LED lamp LED2 just can extinguish.
Claims (4)
1. an environment-friendly type LED lighting delay circuit, it is characterized in that: comprise DC power supply (DC), LED lamp group, charge/discharge testing circuit and delay control circuit, wherein, described DC power supply is with circuit output end that at least two-way is in parallel, one circuit output end is electrically connected on described LED lamp group, another circuit output end is electrically connected on described charge/discharge testing circuit, to form stand-by electric energy; Described delay control circuit is electrically connected on described charge/discharge testing circuit, and can control LED lamp group work described in described charge/discharge testing circuit break-make.
2. environment-friendly type LED lighting delay circuit according to claim 1, it is characterized in that: described LED lamp group comprises first and second LED lamp (LED1, LED2) of serial connection mutually, wherein, one end of described the 2nd LED lamp (LED2) is electrically connected on described DC power supply, the other end ground connection of described the 2nd LED lamp (LED2) through a described LED lamp (LED1).
3. environment-friendly type LED lighting delay circuit according to claim 2, it is characterized in that: described charge/discharge testing circuit comprises charging current limiter resistance (R6), first, two detect resistance (R1, R2), low frequency silicon diode (D1), super farad capacitor (C4) and first, two-transistor (Q1, Q2), wherein, one end of described charging current limiter resistance (R6) is electrically connected on described DC power supply, described second one end of detecting resistance (R2) is electrically connected on the other end of described charging current limiter resistance (R6) by described the first detection resistance (R1), and described second detects the other end ground connection of resistance (R2), the anode of described low frequency silicon diode (D1) is also electrically connected on the other end of described charging current limiter resistance (R6), the cathodic electricity of described low frequency silicon diode (D1) is connected in the positive pole of described super farad capacitor (C4), the minus earth of described super farad capacitor (C4), the collector electrode of the emitter of another described the first transistor (Q1) and described transistor seconds (Q2) is electrically connected on described super farad capacitor (C4) respectively
Positive pole, the base stage of described the first transistor (Q1) be electrically connected on described second detect resistance (R2) one end, the emitter of described transistor seconds (Q2) is electrically connected on one end of described the 2nd LED lamp (LED2).
4. environment-friendly type LED lighting delay circuit according to claim 3, it is characterized in that: described delay control circuit comprises timing capacitor circuit and mono-stable timing circuit, described timing capacitor circuit includes first and second timing capacitor (C1, C2) and first and second Timed current-limiting resistance (R3, R4), and described mono-stable timing circuit includes time-base circuit (U1), wherein, the positive pole of described first and second timing capacitor (C1, C2) is the corresponding collector electrode that is electrically connected on described the first transistor (Q1) by described first and second Timed current-limiting resistance (R3, R4) respectively, the equal ground connection of negative pole of described first and second timing capacitor (C1, C2), 4 pin of described time-base circuit (U1) and 8 pin are all electrically connected on the collector electrode of described the first transistor (Q1), 3 pin of described time-base circuit (U1) are electrically connected on the base stage of described transistor seconds (Q2), 2 pin of described time-base circuit (U1) are electrically connected between the positive pole and first o'clock current-limiting resistance (R3) of described the first timing capacitor (C1), 6 pin of described time-base circuit (U1) and 7 pin are in parallel and are electrically connected between the positive pole and second o'clock current-limiting resistance (R4) of described the second timing capacitor (C2), and 1 pin of described time-base circuit (U1) and the equal ground connection of 5 pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210560331.1A CN103889095B (en) | 2012-12-21 | 2012-12-21 | Environment-friendly type LED lighting delay circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210560331.1A CN103889095B (en) | 2012-12-21 | 2012-12-21 | Environment-friendly type LED lighting delay circuit |
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| CN103889095A true CN103889095A (en) | 2014-06-25 |
| CN103889095B CN103889095B (en) | 2015-11-04 |
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| CN201210560331.1A Expired - Fee Related CN103889095B (en) | 2012-12-21 | 2012-12-21 | Environment-friendly type LED lighting delay circuit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200941704Y (en) * | 2006-06-09 | 2007-08-29 | 姚荣湘 | Controllable LED luminous device |
| CN201134948Y (en) * | 2007-02-25 | 2008-10-15 | 谭蜀君 | Energy-saving light integrating energy conservation and emergency lighting |
| CN202392666U (en) * | 2011-11-30 | 2012-08-22 | 深圳建溢宝电子有限公司 | Emergency lamp |
| CN203072204U (en) * | 2012-12-21 | 2013-07-17 | 昆山引光奴电子科技有限公司 | Environment-friendly LED lighting delay circuit |
-
2012
- 2012-12-21 CN CN201210560331.1A patent/CN103889095B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200941704Y (en) * | 2006-06-09 | 2007-08-29 | 姚荣湘 | Controllable LED luminous device |
| CN201134948Y (en) * | 2007-02-25 | 2008-10-15 | 谭蜀君 | Energy-saving light integrating energy conservation and emergency lighting |
| CN202392666U (en) * | 2011-11-30 | 2012-08-22 | 深圳建溢宝电子有限公司 | Emergency lamp |
| CN203072204U (en) * | 2012-12-21 | 2013-07-17 | 昆山引光奴电子科技有限公司 | Environment-friendly LED lighting delay circuit |
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| CN103889095B (en) | 2015-11-04 |
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