CN113507762A - Special control circuit for LED emergency lamp - Google Patents
Special control circuit for LED emergency lamp Download PDFInfo
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- CN113507762A CN113507762A CN202110950609.5A CN202110950609A CN113507762A CN 113507762 A CN113507762 A CN 113507762A CN 202110950609 A CN202110950609 A CN 202110950609A CN 113507762 A CN113507762 A CN 113507762A
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- emergency lamp
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 25
- 239000003990 capacitor Substances 0.000 claims abstract description 21
- 230000006698 induction Effects 0.000 claims abstract description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000005286 illumination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/12—Controlling the intensity of the light using optical feedback
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/34—Voltage stabilisation; Maintaining constant voltage
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
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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 invention discloses a special control circuit for an LED emergency lamp, which comprises an LED power supply, a battery charging circuit, a capacitor C1-C2, a resistor R1-R4, an MOS transistor Q1-Q2, a rectifier diode D1-D2, a voltage stabilizing chip, an MCU, a photosensitive diode PD, a battery pack and an induction module, wherein the battery charging circuit is connected with the LED power supply; the LED emergency lamp has a reasonable circuit, under the mutual cooperation of the induction module, the photosensitive diode and the MCU, the LED can not be on in daytime, the LED can be on at night, the LED is low in brightness when no person is in power failure and does not move at night, the LED can improve the brightness when the inductor induces that a person passes by, and the LED can return low brightness after a plurality of seconds after the person passes by, so that the energy is effectively saved, and the emergency time of the emergency lamp is prolonged.
Description
Technical Field
The invention relates to the technical field of LED emergency lamps, in particular to a special control circuit for an LED emergency lamp in application.
Background
An LED (light Emitting diode) lamp, i.e., a semiconductor light Emitting diode lamp, is a lighting device manufactured by using an LED as a light source. The LED lamp has the technical characteristics of high efficiency, energy conservation, long service life, small size and the like, is becoming a dominant product of a new generation of lighting market, and powerfully draws the high-speed development of the environment-friendly and energy-saving industry.
The emergency lamp is mainly used for providing illumination after a normal illumination power supply is cut off or a power grid loses power. It is often used in factories, mines, institutions, schools, buildings and tunnels. The emergency lighting system used in China is mainly of an independent control type with a power supply, a normal power supply is connected with a common lighting power supply loop and charges an emergency lamp battery at ordinary times, and a standby power supply (battery) automatically supplies power when the normal power supply is cut off. The general emergency lamp is only a simple on-off control method, a few LED emergency lamps adopt circuit structures for dimming and other control, the circuit structures are relatively complex, and the emergency time is relatively short.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a special control circuit for an LED emergency lamp, which has a simple structure and a long emergency time.
In order to achieve the purpose, the invention provides the technical scheme that:
a special control circuit for an LED emergency lamp comprises an LED power supply, a battery charging circuit, capacitors C1-C2, resistors R1-R4, MOS transistors Q1-Q2, rectifier diodes D1-D2, a voltage stabilizing chip, an MCU, a photosensitive diode PD, a battery pack and an induction module; the input positive electrode of the battery charging circuit is connected with the positive electrode of the LED power supply, and the input negative electrode of the battery charging circuit is connected with the negative electrode of the LED power supply; one end of the rectifier diode D1 is connected with the anode of the LED power supply, the other end of the rectifier diode D2 is connected with the anode of the battery pack, the other end of the rectifier diode D1 is connected with the anode of the LED, the input terminal pin of the voltage stabilizing chip is connected with the anode of the battery pack, the ground terminal pin of the voltage stabilizing chip is connected with the cathode of the battery pack, the output terminal pin of the voltage stabilizing chip is connected with the power supply terminal of the induction module and the power supply pin of the MCU, the output cathode of the battery charging circuit is connected with the cathode of the induction module and the ground terminal pin of the MCU, one end of the capacitor C1 is connected with the input terminal pin of the voltage stabilizing chip, and the other end of the capacitor C1 is connected with the ground terminal pin of the voltage stabilizing chip; one end of the capacitor C2 is connected with the output terminal pin of the voltage stabilizing chip, and the other end of the capacitor C2 is connected with the grounding terminal pin of the voltage stabilizing chip; one end of the resistor R1 is connected with the anode of the LED power supply, the other end of the resistor R1 is connected with the 2 nd terminal pin of the MCU, one end of the resistor R2 is connected with the 2 nd terminal pin of the MCU, the other end of the resistor R3 is grounded, one end of the resistor R3 is connected with the 7 th terminal pin of the MCU, the other end of the resistor R3 is connected with the drain electrode of the MOS transistor Q1, one end of the resistor R4 is connected with the 6 th terminal pin of the MCU, and the other end of the resistor R4 is connected with the drain electrode of the MOS transistor Q2; one end of the photosensitive diode PD is connected with the 5 th terminal pin of the MCU, and the other end of the photosensitive diode PD is grounded.
As a preferable scheme of the invention, the model of the MCU is XY 271A. The model of the rectifying diode D1 and the rectifying diode D2 is IN 4007.
In a preferred embodiment of the present invention, the battery pack is a lithium battery pack. The sensing module is an infrared sensing module.
In a preferred embodiment of the present invention, the capacitance values of the capacitor C1 and the capacitor C2 are 4.7 uF. The resistances of the resistors R1 and R2 are 10 ohm. The resistors R3 and R4 have a resistance of 20 ohm.
When the illuminance is lower than the set value, the positive and negative resistance of the photodiode P connected with the 5 th pin of the MCU can be increased, the 5 th pin outputs high level, the 7 th pin of the MCU outputs high level, the MOS tube Q1 is conducted, and the LED is bright. When the No. 2 pin of the MCU detects no voltage input, entering an emergency mode; and the 6 th pin of the MCU outputs high level, the MOS tube Q2 is conducted, and the LED is bright. When the illuminance is lower than the set value, the sensing module outputs a high level, the 6 th pin of the MCU outputs a high level, and the MOS tube Q2 switches on the LED, so that the brightness of the LED is below 50%. When the sensing module senses that a person passes through, the sensing module outputs high level, the 6 th pin of the MCU outputs high level, and the brightness of the LED switched on by the MOS tube Q2 is 100%. When a person walks for a plurality of seconds, the LED returns to the brightness below 50%, and the emergency time of the emergency lamp is longer.
The invention has the beneficial effects that: the LED emergency lamp has a reasonable circuit, under the mutual cooperation of the induction module, the photosensitive diode and the MCU, the LED can not be on in daytime, the LED can be on at night, the LED is low in brightness when no person is in power failure and does not move at night, the LED can improve the brightness when the inductor induces that a person passes by, and the LED can return low brightness after a plurality of seconds after the person passes by, so that the energy is effectively saved, and the emergency time of the emergency lamp is prolonged.
The invention is further illustrated by the following figures and examples.
Drawings
FIG. 1 is a circuit diagram of a LED emergency lamp specific control circuit of the present invention.
Detailed Description
Example (b): referring to fig. 1, the special control circuit for the LED emergency lamp provided by the invention comprises an LED power supply, a battery charging circuit, capacitors C1-C2, resistors R1-R4, MOS transistors Q1-Q2, rectifier diodes D1-D2, a voltage stabilizing chip, an MCU, a photodiode PD, a battery pack and an induction module.
The LED power supply provides power for the LED and the battery charging circuit. In this embodiment, the input of the LED power supply is 100 and 277VAC, and the output is 12 VDC. The battery pack is preferably a 7.4V and 2600mA lithium battery pack, and the battery charging circuit is used for charging the battery pack. The models of the rectifier diode D1 and the rectifier diode D2 are preferably IN4007, so that the cost is reduced on the basis of meeting the use function requirements. The sensing module is preferably an infrared sensing module. The infrared sensing module detects the change of the infrared spectrum of the human body when the human body enters a sensing range by utilizing the infrared rays emitted by the human body, and then outputs high-level delay pulses. The capacitance values of the capacitor C1 and the capacitor C2 are 4.7 uF. The resistances of the resistors R1 and R2 are 10 ohm. The resistors R3 and R4 have a resistance of 20 ohm.
The model of the MCU is preferably XY 271A. The XY271A series is a CMOS 8-bit microprocessor with a 12-bit ADC, based on OTP as program storage. The method applies the architecture foundation of RISC to ensure that most instruction execution time is one instruction cycle, and only a few instructions need two instruction cycles. A 1.5Kx14 bit OTP program memory and an 88 Bytes data memory are arranged inside the XY271A, a 12-channel 12-bit resolution A/D converter is further arranged inside the chip, wherein a 1 channel is a built-in Band-gap reference voltage generator which can provide 1.2V voltage for measurement; in addition, XY271A provides 3 sets of hardware counters (Timer), one being a 16-bit counter and the other two being 8-bit counters and can generate PWM waveforms.
The input positive pole of the battery charging circuit is connected with the positive pole of the LED power supply, and the input negative pole of the battery charging circuit is connected with the negative pole of the LED power supply.
The positive terminal of rectifier diode D1 is connected the positive pole of LED power to through resistance R1 connection MCU's 2 nd terminal pin, rectifier diode D1's negative pole end is connected the positive pole of LED, mainly used for preventing battery voltage from recharging to the LED power.
The positive end of the rectifier diode D2 is connected with the positive electrode of the battery pack, and the negative end of the rectifier diode D2 is connected with the positive electrode of the LED, and the rectifier diode D2 is mainly used for preventing the LED power supply from directly charging the battery pack.
The input terminal pin of the voltage stabilizing chip is connected with the anode of the battery pack, the ground terminal pin of the voltage stabilizing chip is connected with the cathode of the battery pack, and the output terminal pin of the voltage stabilizing chip is connected with the power supply end of the induction module and the 8 th terminal pin of the MCU, namely the power supply pin.
And the output negative electrode of the battery charging circuit is connected with the negative electrode of the induction module and the 4 th end pin of the MCU, namely a grounding pin.
One end of the capacitor C1 is connected with the input terminal pin of the voltage stabilizing chip, and the other end of the capacitor C1 is connected with the grounding terminal pin of the voltage stabilizing chip; one end of the capacitor C2 is connected with the output terminal pin of the voltage stabilizing chip, and the other end is connected with the grounding terminal pin of the voltage stabilizing chip.
One end of the resistor R1 is connected with the anode of the LED power supply, the other end of the resistor R1 is connected with the 2 nd terminal pin of the MCU, one end of the resistor R2 is connected with the 2 nd terminal pin of the MCU, the other end of the resistor R3 is grounded, one end of the resistor R3 is connected with the 7 th terminal pin of the MCU, the other end of the resistor R3 is connected with the drain electrode of the MOS transistor Q1, one end of the resistor R4 is connected with the 6 th terminal pin of the MCU, and the other end of the resistor R4 is connected with the drain electrode of the MOS transistor Q2; one end of the photosensitive diode PD is connected with the 5 th terminal pin of the MCU, and the other end of the photosensitive diode PD is grounded.
When the LED lamp works, when the illuminance is lower than a set value, such as below 15Lux, the positive and negative resistance of a photodiode P connected with a pin 5 of the MCU can be increased, and the pin 5 outputs high level; the output of the 7 th pin of the MCU is high level, the MOS tube Q1 is conducted, and the LED is bright.
When the No. 2 pin of the MCU detects no voltage input, entering an emergency mode; and the 6 th pin of the MCU outputs high level, the MOS tube Q2 is conducted, and the LED is bright.
When the illuminance is lower than the set value, for example, below 15Lux, the sensing module outputs a high level, the 6 th pin of the MCU outputs a high level, and the MOS transistor Q2 turns on the LED to have a brightness of 50% or less, for example, 30% preferred, so as to ensure the brightness, but not too high energy consumption. When the sensing module senses that people pass through, the high level is output, the 6 th pin of the MCU outputs the high level, and the brightness of the LED conducted by the MOS tube Q2 is 100%. When people walk for a plurality of seconds, such as 30 seconds, the LED can return to 30% of brightness, and the emergency time of the emergency lamp is effectively prolonged.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. In addition, although specific terms are used herein, they are used for convenience of description and are not to be construed as limiting the invention in any way, and other circuits similar or identical thereto are also within the scope of the invention.
Claims (10)
1. A special control circuit for an LED emergency lamp comprises an LED power supply and a battery charging circuit, and is characterized by further comprising a capacitor C1-C2, a resistor R1-R4, an MOS transistor Q1-Q2, a rectifier diode D1-D2, a voltage stabilizing chip, an MCU, a photosensitive diode PD, a battery pack and an induction module; the input positive electrode and the input negative electrode of the battery charging circuit are correspondingly connected with the positive electrode and the negative electrode of the LED power supply; one end of the rectifier diode D1 is connected with the anode of the LED power supply, the other end of the rectifier diode D2 is connected with the anode of the battery pack, the other end of the rectifier diode D1 is connected with the anode of the LED, the input terminal pin of the voltage stabilizing chip is connected with the anode of the battery pack, the ground terminal pin of the voltage stabilizing chip is connected with the cathode of the battery pack, the output terminal pin of the voltage stabilizing chip is connected with the power supply terminal of the induction module and the power supply pin of the MCU, the output cathode of the battery charging circuit is connected with the cathode of the induction module and the ground terminal pin of the MCU, one end of the capacitor C1 is connected with the input terminal pin of the voltage stabilizing chip, and the other end of the capacitor C1 is connected with the ground terminal pin of the voltage stabilizing chip; one end of the capacitor C2 is connected with the output terminal pin of the voltage stabilizing chip, and the other end of the capacitor C2 is connected with the grounding terminal pin of the voltage stabilizing chip; one end of the resistor R1 is connected with the anode of the LED power supply, the other end of the resistor R1 is connected with the 2 nd terminal pin of the MCU, one end of the resistor R2 is connected with the 2 nd terminal pin of the MCU, the other end of the resistor R3 is grounded, one end of the resistor R3 is connected with the 7 th terminal pin of the MCU, the other end of the resistor R3 is connected with the drain electrode of the MOS transistor Q1, one end of the resistor R4 is connected with the 6 th terminal pin of the MCU, and the other end of the resistor R4 is connected with the drain electrode of the MOS transistor Q2; one end of the photosensitive diode PD is connected with the 5 th terminal pin of the MCU, and the other end of the photosensitive diode PD is grounded.
2. The LED emergency lamp special control circuit according to claim 1, wherein when the illuminance is lower than a set value, the positive and negative resistances of the photodiode P are increased, the 5 th pin of the MCU outputs a high level, the 7 th pin of the MCU outputs a high level, the MOS transistor Q1 is turned on, and the LED is on; when the No. 2 pin of the MCU detects no voltage input, entering an emergency mode; and the 6 th pin of the MCU outputs high level, the MOS tube Q2 is conducted, and the LED is bright.
3. The LED emergency lamp special control circuit according to claim 1 or 2, wherein when the illuminance is lower than a set value, the sensing module outputs a high level, the pin 6 of the MCU outputs a high level, and the brightness of the LED switched on by the MOS transistor Q2 is below 50%; when the sensing module senses that a person passes through, the sensing module outputs a high level, a 6 th pin of the MCU outputs a high level, and the brightness of the LED conducted by the MOS tube Q2 is 100%; when a person walks for several seconds, the LED will return less than 50% brightness.
4. The LED emergency lamp special control circuit according to claim 1, wherein the MCU is XY271A in model number.
5. The LED emergency lamp specific control circuit according to claim 1, wherein the battery pack is a lithium battery pack.
6. The LED emergency lamp special control circuit according to claim 1, wherein the capacitance values of the capacitor C1 and the capacitor C2 are 4.7 uF.
7. The LED emergency lamp specific control circuit according to claim 1, wherein the resistors R1 and R2 have a resistance of 10 ohm.
8. The LED emergency lamp specific control circuit according to claim 1, wherein the resistors R3 and R4 have a resistance of 20 ohm.
9. The LED emergency lamp special control circuit according to claim 1, wherein the model of the rectifier diode D1 and the model of the rectifier diode D2 are IN 4007.
10. The LED emergency lamp special control circuit according to claim 1, wherein the sensing module is an infrared sensing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950609.5A CN113507762B (en) | 2021-08-18 | Special control circuit for LED emergency lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950609.5A CN113507762B (en) | 2021-08-18 | Special control circuit for LED emergency lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113507762A true CN113507762A (en) | 2021-10-15 |
| CN113507762B CN113507762B (en) | 2024-09-27 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853482A (en) * | 2015-04-03 | 2015-08-19 | 广州市番禺奥莱照明电器有限公司 | LED infrared induction lamp with emergency function |
| WO2020007171A1 (en) * | 2018-07-04 | 2020-01-09 | 深圳市威诺华照明电器有限公司 | Compound isolation type led emergency lamp control circuit |
| CN210202147U (en) * | 2019-05-15 | 2020-03-27 | 郑霖云 | Emergency lamp control circuit of single chip microcomputer chip |
| CN111542150A (en) * | 2020-03-17 | 2020-08-14 | 浙江阳光照明电器集团股份有限公司 | Human body induction LED lamp circuit with fire-fighting emergency lighting function |
| CN211509374U (en) * | 2019-12-17 | 2020-09-15 | 鹰潭阳光照明有限公司 | Light-operated LED lamp circuit with human body induction function |
| CN218162930U (en) * | 2021-08-18 | 2022-12-27 | 东莞泛美光电有限公司 | Special control circuit for LED emergency lamp |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853482A (en) * | 2015-04-03 | 2015-08-19 | 广州市番禺奥莱照明电器有限公司 | LED infrared induction lamp with emergency function |
| WO2020007171A1 (en) * | 2018-07-04 | 2020-01-09 | 深圳市威诺华照明电器有限公司 | Compound isolation type led emergency lamp control circuit |
| CN210202147U (en) * | 2019-05-15 | 2020-03-27 | 郑霖云 | Emergency lamp control circuit of single chip microcomputer chip |
| CN211509374U (en) * | 2019-12-17 | 2020-09-15 | 鹰潭阳光照明有限公司 | Light-operated LED lamp circuit with human body induction function |
| CN111542150A (en) * | 2020-03-17 | 2020-08-14 | 浙江阳光照明电器集团股份有限公司 | Human body induction LED lamp circuit with fire-fighting emergency lighting function |
| CN218162930U (en) * | 2021-08-18 | 2022-12-27 | 东莞泛美光电有限公司 | Special control circuit for LED emergency lamp |
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