CN107949104A - A kind of LED detection circuits and drive circuit and lighting system - Google Patents
A kind of LED detection circuits and drive circuit and lighting system Download PDFInfo
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- CN107949104A CN107949104A CN201711159301.9A CN201711159301A CN107949104A CN 107949104 A CN107949104 A CN 107949104A CN 201711159301 A CN201711159301 A CN 201711159301A CN 107949104 A CN107949104 A CN 107949104A
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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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
-
- 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]
-
- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of LED detection circuits and drive circuit and lighting system, including control unit, detection unit, driving unit and LED load, control unit distinguishes connecting detection unit and driving unit, detection unit and driving unit connect LED load respectively, structural principle of the present invention is simple, good energy-conserving effect, it is possible to increase the stability of LED load.
Description
Technical field
The present invention relates to technical field of LED illumination, is specially a kind of LED detection circuits and drive circuit and illumination system
System.
Background technology
LED illumination System is an electro-optic conversion system, its electro-optic conversion process includes original successively since power pack
Beginning power supply (" power producer "), power management and conversion, sensing and control, driver, heat management, LED and its mixed light, scattering and
The parts such as optics extraction.Wherein, the LED electric power systems being made of original power (such as battery) and controlling and driving circuits are LED
The necessary condition of work.
In LED lighting systems, LED loaded work pieces are usually driven by LED drive circuits；LED illumination at present
Energy saving of system effect is poor, wherein, LED detection unit signal-to-noise ratio is low, poor anti jamming capability, and system stability is poor.
The content of the invention
It is above-mentioned to solve it is an object of the invention to provide a kind of LED detection circuits and drive circuit and lighting system
The problem of being proposed in background technology.
To achieve the above object, the present invention provides following technical solution：A kind of LED detection circuits and drive circuit and photograph
Bright system, including control unit, detection unit, driving unit and LED load, control unit difference connecting detection unit and driving
Unit, detection unit and driving unit connect LED load respectively；
The driving unit includes voltage stabilizing chip, unidirectional thyristor and timing chip, one foot of the voltage stabilizing chip connection capacitance C mono-
End, two feet difference connecting luminous diode cathode and diode D cathodes, the three feet connection capacitance C other ends are simultaneously grounded, described unidirectional
Thyristor cathode connects LED light anode, unidirectional thyristor anode ground connection, and control terminal connects resistance G one end, and the resistance G is another
End connection three foot of timing chip, two foot of timing chip connect infrared human body heat releasing electric transducer one end and controlling switch respectively
One end, four feet connect diode D anode, capacitance D one end, light emitting diode E anode, luminance sensor one end and resistance respectively
H one end, five feet are grounded by capacitance E, and six feet connect seven feet and the connection resistance H other ends and capacitance F one end, capacitance F are another respectively
One end is grounded；The controlling switch other end connects potentiometer and is grounded.
Preferably, the detection unit includes sensor group, the first copped wave unit, the second copped wave unit and electric signal amplification
Device, the sensor group output terminal connect the first copped wave unit, and the first copped wave unit connects electric signal amplifier input terminal,
The electric signal amplifier output terminal connects drive module, and the drive module connects the second copped wave unit, second copped wave
Unit connects analog-digital converter, and the analog-digital converter connects digital filter.
Preferably, the first copped wave unit and the second copped wave cellular construction are completely the same, including operational amplifier, voltage stabilizing
Diode, fly-wheel diode and field-effect transistor, the operational amplifier electrode input end connect reference voltage terminal, anode input
End respectively connect resistance F one end and field-effect transistor drain electrode, the field-effect transistor source electrode connect respectively inductance one end and
Fly-wheel diode cathode, the operational amplifier output terminal connect respectively zener diode anode, field effect transistor gate and
Resistance E one end, the resistance E other ends connect fly-wheel diode anode, LED load cathode, the LED load anode connection electricity respectively
Feel the other end.
Preferably, the sensor group includes voltage sensor, current sensor and temperature sensor.
Compared with prior art, the beneficial effects of the invention are as follows：Structural principle of the present invention is simple, and good energy-conserving effect can
Improve the stability of LED load；Wherein, the driving unit that the present invention uses can realize the automatic adjustment to LED load, can
People not when close LED load in time, while can also improve LED load work stability, good energy-conserving effect；Using
Detection unit strong antijamming capability, can filter out sensor group output signal noise, it is not necessary to reduce digital filter
Bandwidth, improves the signal-to-noise ratio of system, improves circuit performance；In addition, the copped wave unit that the present invention uses can eliminate ripple
Influence of the electric current to LED load, reduces the heat that ripple current produces LED load, reduces the power attenuation of circuit, effectively prolong
The service life of long LED load.
Brief description of the drawings
Fig. 1 is control principle drawing of the present invention；
Fig. 2 is driving unit schematic diagram of the present invention；
Fig. 3 is detection unit functional block diagram of the present invention；
Fig. 4 is the copped wave unit schematic diagram of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
- 4 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of LED detection circuits and drive circuit and illumination
System, including control unit 1, detection unit 2, driving unit 3 and LED load 4, control unit 1 distinguish 2 He of connecting detection unit
Driving unit 3, detection unit 2 and driving unit 3 connect LED load 4 respectively；
Driving unit 3 includes voltage stabilizing chip 11, unidirectional thyristor 12 and timing chip 13,11 1 foot of voltage stabilizing chip connection capacitance
C3c one end, two feet difference 14 cathode of connecting luminous diode and diode D4b cathodes, the three feet connection capacitance C3c other ends simultaneously connect
Ground, 12 cathode connecting luminous diode of unidirectional thyristor, 14 anode, 12 anode of unidirectional thyristor ground connection, control terminal connection resistance
G7a one end, the resistance G7a other ends connect 13 3 foot of timing chip, and 13 2 foot of timing chip connects human body infrared heat respectively
15 one end of 9 one end of electric transducer and controlling switch is released, four feet connect diode D4b anode, capacitance D4c one end, diode respectively
E5b anode, 16 one end of luminance sensor and resistance H8a one end, five feet are grounded by capacitance E5c, and six feet connect seven feet and divide
Not Lian Jie the resistance H8a other ends and capacitance F6c one end, the capacitance F6c other ends ground connection；15 other end of the controlling switch connection electricity
Position device 17 is simultaneously grounded.Controlling switch 16 is using control relay.Luminance sensor resistance value because illumination dies down and resistance value reduce, this
When someone enter infrared human body heat releasing electric transducer investigative range when, infrared human body heat releasing electric transducer conducting, timing chip
Two feet generate trigger pulse, so that three foot of timing chip exports high level signal, trigger the control terminal of unidirectional thyristor, make
Unidirectional thyristor turns on, and LED load conducting shines；If infrared human body heat releasing electric transducer is detected less than human-induced signal, meeting
Automatically shut down, good energy-conserving effect.
In the present invention, detection unit 2 is put including sensor group, the first copped wave unit 5, the second copped wave unit 6 and electric signal
Big device 7, sensor group include voltage sensor 23, current sensor 24 and temperature sensor 25；The sensor group output terminal
The first copped wave unit 5 is connected, the first copped wave unit 5 connects 7 input terminal of electric signal amplifier, the electric signal amplifier 7
Output terminal connects drive module 8, and the drive module 8 connects the second copped wave unit 6, and the second copped wave unit 6 connects modulus
Converter 9, the analog-digital converter 9 connect digital filter 10；Wherein, electric signal amplifier is also used as wave filter, passes through tune
The bandwidth of whole electric signal amplifier can filter out the noise in the output signal of sensor group, improve signal-to-noise ratio；Drive module is used
Gain, bandwidth in adjustment amplified signal etc., to produce and the matched drive signal of analog-digital converter；The sampling of analog-digital converter
Frequency is higher than nyquist sampling rate, can reduce quantizing noise, improves precision, while cause the upper limit of its output digit signals
Frequency can be into progress digital processing to the region of 1/2 sample frequency.
In the present invention, the first copped wave unit 5 and 6 structure of the second copped wave unit are completely the same, including operational amplifier 18, steady
Pressure diode 19, fly-wheel diode 20 and field-effect transistor 21,18 electrode input end of operational amplifier connect reference voltage
End, negative input connects resistance F6a one end respectively and field-effect transistor 21 drains, 21 source electrode of field-effect transistor point
Not Lian Jie 20 cathode of 22 one end of inductance and fly-wheel diode, 18 output terminal of operational amplifier connects zener diode 19 respectively
Anode, 21 grid of field-effect transistor and resistance E5a one end, the resistance E5a other ends connect respectively 20 anode of fly-wheel diode,
4 cathode of LED load, 4 anode of LED load connect 22 other end of inductance.The copped wave unit that the present invention uses can eliminate line
Influence of the ripple electric current to LED load, reduces the heat that ripple current produces LED load, reduces the power attenuation of circuit, effectively
Extend the service life of LED load.
In conclusion structural principle of the present invention is simple, good energy-conserving effect, it is possible to increase the stability of LED load；Wherein,
The driving unit that the present invention uses can realize the automatic adjustment to LED load, can people not when close LED in time
Load, while the stability of LED load work, good energy-conserving effect can also be improved；The detection unit strong antijamming capability of use, energy
Enough filter out the noise of sensor group output signal, it is not necessary to reduce the bandwidth of digital filter, improve the signal-to-noise ratio of system, change
It has been apt to circuit performance.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of changes, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of LED detection circuits and drive circuit and lighting system, it is characterised in that：Including control unit（1）, detection it is single
Member（2）, driving unit（3）And LED load（4）, control unit（1）Connecting detection unit respectively（2）And driving unit（3）, inspection
Survey unit（2）And driving unit（3）LED load is connected respectively（4）；The driving unit includes voltage stabilizing chip（11）, it is unidirectional brilliant
Brake tube（12）And timing chip（13）, the voltage stabilizing chip（11）One foot connection capacitance C（3c）One end, two feet connect luminous respectively
Diode（14）Cathode and diode D（4b）Cathode, three feet connection capacitance C（3c）The other end is simultaneously grounded, the unidirectional thyristor
（12）Cathode connecting luminous diode（14）Anode, unidirectional thyristor（12）Anode is grounded, control terminal connection resistance G (7a) one
End, resistance G (7a) other end connect timing chip（13）Three feet, the timing chip（13）It is red that two feet connect human body respectively
Outer pyroelectric sensor（9）One end and controlling switch（15）One end, four feet connect diode D respectively（4b）Anode, capacitance D（4c）
One end, diode E（5b）Anode, luminance sensor（16）One end and resistance H (8a) one end, five feet pass through capacitance E（5c）Connect
Ground, six feet connect seven feet and connect resistance H (8a) other ends and capacitance F respectively（6c）One end, capacitance F（6c）The other end is grounded；
The controlling switch（15）The other end connects potentiometer（17）And it is grounded.
2. a kind of LED detection circuits according to claim 1 and drive circuit and lighting system, it is characterised in that：Institute
State detection unit（2）Including sensor group, the first copped wave unit（5）, the second copped wave unit（6）And electric signal amplifier（7）, institute
State sensor group output terminal and connect the first copped wave unit（5）, the first copped wave unit（5）Connect electric signal amplifier（7）It is defeated
Enter end, the electric signal amplifier（7）Output terminal connects drive module（8）, the drive module（8）Connect the second copped wave unit
（6）, the second copped wave unit（6）Connect analog-digital converter（9）, the analog-digital converter（9）Connect digital filter（10）.
3. a kind of LED detection circuits according to claim 2 and drive circuit and lighting system, it is characterised in that：Institute
State the first copped wave unit（5）With the second copped wave unit（6）Structure is completely the same, including operational amplifier（18）, zener diode
（19）, fly-wheel diode（20）And field-effect transistor（21）, the operational amplifier（18）Electrode input end connects reference voltage
End, negative input connect resistance F (6a) one end and field-effect transistor respectively（21）Drain electrode, the field-effect transistor（21）
Source electrode connects inductance respectively（22）One end and fly-wheel diode（20）Cathode, the operational amplifier（18）Output terminal connects respectively
Zener diode（19）Anode, field-effect transistor（21）Grid and resistance E (5a) one end, resistance E (5a) other end connect respectively
Connect fly-wheel diode（20）Anode, LED load（4）Cathode, the LED load（4）Anode connects inductance（22）The other end.
4. a kind of LED detection circuits according to claim 2 and drive circuit and lighting system, it is characterised in that：Institute
Stating sensor group includes voltage sensor（23）, current sensor（24）And temperature sensor（25）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711159301.9A CN107949104A (en) | 2017-11-20 | 2017-11-20 | A kind of LED detection circuits and drive circuit and lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711159301.9A CN107949104A (en) | 2017-11-20 | 2017-11-20 | A kind of LED detection circuits and drive circuit and lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107949104A true CN107949104A (en) | 2018-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711159301.9A Pending CN107949104A (en) | 2017-11-20 | 2017-11-20 | A kind of LED detection circuits and drive circuit and lighting system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107949104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110148368A (en) * | 2019-04-15 | 2019-08-20 | 苏州研路智能科技有限公司 | A kind of defect detecting system of OLED display module |
| TWI829106B (en) * | 2021-06-23 | 2024-01-11 | 群創光電股份有限公司 | Electronic device including driver circuit and driving method thereof |
Citations (7)
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| CN104349549A (en) * | 2013-08-02 | 2015-02-11 | 松下电器产业株式会社 | Lighting device and luminaire |
| CN104950165A (en) * | 2015-06-19 | 2015-09-30 | 杭州士兰微电子股份有限公司 | Detecting circuit and detecting method |
| CN204807622U (en) * | 2015-06-19 | 2015-11-25 | 杭州士兰微电子股份有限公司 | Detection circuitry |
| US20160255685A1 (en) * | 2015-02-27 | 2016-09-01 | Cirrus Logic, Inc. | Switch-mode drive sensing of reverse recovery in bipolar junction transistor (bjt)-based power converters |
| CN206077764U (en) * | 2016-09-18 | 2017-04-05 | 电子科技大学中山学院 | Adaptive load matching LED driving intelligent controller |
| CN107332394A (en) * | 2016-04-29 | 2017-11-07 | 德昌电机(深圳)有限公司 | A kind of Magnetic Sensor, Magnetic Sensor integrated circuit, electric machine assembly and application apparatus |
| CN107333357A (en) * | 2017-08-09 | 2017-11-07 | 北京军秀咨询有限公司 | A kind of LED driving power supply |
-
2017
- 2017-11-20 CN CN201711159301.9A patent/CN107949104A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349549A (en) * | 2013-08-02 | 2015-02-11 | 松下电器产业株式会社 | Lighting device and luminaire |
| US20160255685A1 (en) * | 2015-02-27 | 2016-09-01 | Cirrus Logic, Inc. | Switch-mode drive sensing of reverse recovery in bipolar junction transistor (bjt)-based power converters |
| CN104950165A (en) * | 2015-06-19 | 2015-09-30 | 杭州士兰微电子股份有限公司 | Detecting circuit and detecting method |
| CN204807622U (en) * | 2015-06-19 | 2015-11-25 | 杭州士兰微电子股份有限公司 | Detection circuitry |
| CN107332394A (en) * | 2016-04-29 | 2017-11-07 | 德昌电机(深圳)有限公司 | A kind of Magnetic Sensor, Magnetic Sensor integrated circuit, electric machine assembly and application apparatus |
| CN206077764U (en) * | 2016-09-18 | 2017-04-05 | 电子科技大学中山学院 | Adaptive load matching LED driving intelligent controller |
| CN107333357A (en) * | 2017-08-09 | 2017-11-07 | 北京军秀咨询有限公司 | A kind of LED driving power supply |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110148368A (en) * | 2019-04-15 | 2019-08-20 | 苏州研路智能科技有限公司 | A kind of defect detecting system of OLED display module |
| TWI829106B (en) * | 2021-06-23 | 2024-01-11 | 群創光電股份有限公司 | Electronic device including driver circuit and driving method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180420 |