CN105828473B - Two stepwise light emitting diode security monitoring lighting devices - Google Patents
Two stepwise light emitting diode security monitoring lighting devices Download PDFInfo
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- CN105828473B CN105828473B CN201610160945.9A CN201610160945A CN105828473B CN 105828473 B CN105828473 B CN 105828473B CN 201610160945 A CN201610160945 A CN 201610160945A CN 105828473 B CN105828473 B CN 105828473B
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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
Abstract
The invention discloses a kind of two stepwise light emitting diode security monitoring lighting devices, during nightfall, LED source opens illumination that is bright and showing low-light level automatically, when movement detection device detects the action of invasion, LED source is switched to after high-order illuminate and continue of short duration delay by low order illumination immediately, is returned to low order and is illuminated to save the energy.The present apparatus has PMU, photosensitive switch control unit, movement detection unit, load and power control unit and luminescence unit.Luminescence unit is made up of one or more light emitting diodes, it can be determined to be turned on and off according to photosensitive switch control unit, and brightness can be greatly improved immediately to have the function that to warn invader when detection unit of taking action detects someone's invasion, by adjusting the load number of electric current or conducting.
Description
The application be the applying date on 07 14th, 2011, Application No. 201110201785.5, entitled " two ranks
The divisional application of formula light emitting diode security monitoring lighting device " patent of invention.
Technical field
The present invention relates to a kind of lighting device, and more particularly to a kind of two stepwise light emitting diodes with low-order and high-order brightness
Security monitoring lighting device.
Background technology
The various light source such as incandescent lamp, fluorescent lamp, Halogen lamp LED, and light emitting diode is existing lighting device.Outdoor lighting
Device generally carrys out the light source of automatic start light fixture with photo resistance, referred to as light-operated mode of operation (Photo-Control Mode,
Abbreviation PC patterns), under optical mode control, control light source after one section of set time of all light the illumination of light fixture with timer
Extinguish or be switching to compared with low-light level, referred to as saving operation mode (Power-Saving Mode, abbreviation PS pattern), saving
Often use movement detection device under pattern, restart light fixture when the personnel that detect are close to light fixture, make all light illuminate one it is of short duration when
Between, energy saver mode is replied afterwards.Either illuminated by detecting background light level come automatic start, timing all light and pass through detection
Personnel's action is from complete dark or lower-wattage brightness illumination to all light, or the control of adjustment brightness, often with complicated circuit
Technology is realized.Especially in the driving of light emitting diode, the technology of complicated and high cost of manufacture is still fallen within.
The control of various light-source brightness, the especially Lighting control in light emitting diode, for how to strengthen brightness of illumination and
The contrast of colour temperature, the simple effective practice is proposed, be the problem of the present invention.
The content of the invention
It is an object of the invention to propose a kind of light emitting diode security monitoring lighting device of two stepwises brightness, it can profit
With the mode of adjustment electric current or light source load, when detecting personnel's action in the power save mode, high-order brightness is immediately switched to simultaneously
Continue for some time to have the function that warning.When being not detected by someone, maintain in the state of low order illuminates to save energy
Source.
The present invention provides a kind of two stepwise light emitting diode security monitoring lighting devices, including a PMU, one
Photosensitive switch control unit, an action detection unit, a load and power control unit and a luminescence unit, the luminescence unit bag
Include the light emitting diode of one or more series connection；When the photosensitive switch control unit detects that ambient brightness is less than a preset value
When, the load and power control unit open the luminescence unit, the luminescence unit is produced a high-order or a low order brightness；When this
When photosensitive switch control unit detects that ambient brightness is higher than the preset value, the load and power control unit close the luminous list
Member；In the power save mode, when this action detection unit detects personnel's action, the load and power control unit are improved and flowed through
The electric current of the luminescence unit, the luminescence unit is produced a high-order brightness and continue one section of preset time.
The present invention also provides one kind two stepwise light emitting diode security monitoring lighting devices, including a PMU,
One photosensitive switch control unit, an action detection unit, a load and power control unit and a luminescence unit, the luminescence unit
Include the light emitting diode of multiple series connection, should when the photosensitive switch control unit detects that ambient brightness is less than a preset value
Load and power control unit open all or part of light emitting diode in the luminescence unit, the luminescence unit is produced one high
Rank or a low order brightness；When the photosensitive switch control unit detects that ambient brightness is higher than the preset value, the load and power
All light emitting diodes that control unit is closed in the luminescence unit；In the power save mode, when this action detection unit detects
When personnel take action, the load and power control unit open the light emitting diode of whole numbers in the luminescence unit, make the hair
Light unit produces a high-order brightness and continues one section of preset time；In this embodiment combination fixed current controling circuit, with fixed
Light emitting diode in the direct current driven luminescence unit.
The present invention provides one kind two stepwise light emitting diode security monitoring lighting devices again, including a PMU,
One photosensitive switch control unit, an action detection unit, a load and power control unit and a luminescence unit, the luminescence unit
Including a Phase angle control device and one or more AC-operated light sources in parallel, the Phase angle control device be coupled to said one or it is multiple simultaneously
Between the AC-operated light sources and AC power of connection；Wherein, the load and power control unit adjust the hair via the Phase angle control device
The average electrical power of light unit；When the photosensitive switch control unit detects that ambient brightness is less than a preset value, the load and
Power control unit opens the luminescence unit, the luminescence unit is produced the brightness of a high-order or a low order；When the photosensitive switch
When control unit detects that ambient brightness is higher than the preset value, the load and power control unit close the luminescence unit；Saving
Under energy pattern, when this action detection unit detects personnel's action, the load and power control unit improve the luminescence unit
Average electrical power, the luminescence unit is produced a high-order brightness and continue one section of preset time.
A kind of two stepwise light emitting diode security monitoring lighting devices of the present invention also proposition, including a PMU,
One photosensitive switch control unit, an action detection unit, a load and power control unit and a luminescence unit, the luminescence unit
By the alternating-current light emitting diode of X high wattages and the alternating-current light emitting diode of Y low wattage is parallel with one another forms, when the light
When quick switch control unit detects that ambient brightness is less than a preset value, the load and power control unit open those low watts
Several alternating-current light emitting diodes, the luminescence unit is set to produce a low order brightness；When the photosensitive switch control unit detects environment
When brightness is higher than the preset value, the load and power control unit close the luminescence unit；When this action detection unit detects
During one intruder operation, the load and power control unit while the light emitting diode watt low with those for opening those high wattages
Several light emitting diodes, the luminescence unit is produced a high-order brightness and continue one section of preset time, wherein X, Y is positive integer.
The present invention and a kind of two stepwise light emitting diode security monitoring lighting devices of proposition, including a PMU,
One photosensitive switch control unit, an action detection unit, a load and power control unit and a luminescence unit, the luminescence unit
Including a rectification circuit and one or more AC-operated light sources in parallel, the rectification circuit is coupled to above-mentioned AC-operated light sources and alternating current
Between source；Wherein, the load and power control unit adjust the average electrical power of the luminescence unit via the rectification circuit；When this
When photosensitive switch control unit detects that ambient brightness is less than a preset value, the load and power control unit open the luminous list
Member, the luminescence unit is set to produce a low order brightness；When the photosensitive switch control unit detects that ambient brightness is higher than the preset value
When, the load and power control unit close the luminescence unit；When this action detection unit detects an intruder operation, this is negative
Carry and power control unit improves the average electrical power of the luminescence unit, the luminescence unit is produced a high-order brightness and continue one
Section preset time, the wherein rectification circuit include a switch in parallel and a diode, the switch are controlled by the load and power
Control unit.
In summary, the light emitting diode security monitoring lighting device for the two benches brightness that the embodiment of the present invention is provided,
Light-operated and saving operation mode can be performed.Under optical mode control, illumination, and automatic closing at cockcrow are automatically turned at dark
Illumination.Optical mode control first produces high-order brightness and illuminates one section of setting time, is switching to generation via control unit automatically afterwards
The energy saver mode of low order brightness illumination.In the power save mode, when movement detection device detects people, lighting device can switch immediately
To high-order brightness and one section of of short duration preset time is maintained, to reach the effectiveness of illumination or warning.After preset time, illumination dress
Put to automatically switch and return to the illumination of low order brightness to save the energy.
For the enabled feature and technology contents for being further understood that the present invention, refer to below in connection with the present invention specifically
Bright and accompanying drawing, but these explanations are intended merely to the explanation present invention with institute's accompanying drawings, rather than the interest field of the present invention is appointed
What limitation.
Brief description of the drawings
Fig. 1 is the circuit structure diagram of two stepwise light emitting diode security monitoring lighting devices of first embodiment of the invention.
Fig. 2A is the circuit diagram of two stepwise light emitting diode security monitoring lighting devices of first embodiment of the invention.
Fig. 2 B are the pulse wave width modulation signal PWM of first embodiment of the invention oscillogram.
Fig. 3 A are the circuit diagram of two stepwise light emitting diode security monitoring lighting devices of second embodiment of the invention.
Fig. 3 B are the circuit diagram of two stepwise light emitting diode security monitoring lighting devices of second embodiment of the invention.
Fig. 4 A are the circuit diagram of two stepwise light emitting diode security monitoring lighting devices of third embodiment of the invention.
Fig. 4 B are the waveform diagram of two stepwise light emitting diode security monitoring lighting devices of third embodiment of the invention.
Fig. 5 is the circuit diagram of two stepwise light emitting diode security monitoring lighting devices of third embodiment of the invention.
Fig. 6 is the circuit diagram of two stepwise light emitting diode security monitoring lighting devices of fourth embodiment of the invention.
Fig. 7 is the circuit diagram of two stepwise light emitting diode security monitoring lighting devices of fifth embodiment of the invention.
Wherein, description of reference numerals is as follows：
100：Two stepwise light emitting diode security monitoring lighting devices；
110：PMU；
120：Photosensitive switch control unit；
130：Movement detection unit；
140：Load and power control unit；
150、250、350、450、550、650、750：Luminescence unit；
220：Optical sensor；
230：Movement detection device；
240：Microcontroller；
260：Time setting unit；
L1~L3：Light emitting diode；
ACLED, ACLED1~3：Alternating-current light emitting diode；
451、551：Phase angle control device；
452、552、553：Controllable silicon；
651st, 652,751~753：Switch；
Q1、Q2、Q4、Q5：Transistor
R、R1、R2、R16、R17：Resistance；
GND：Earth terminal；
J1、J2：Relay.
Embodiment
(first embodiment)
Reference picture 1, it show two stepwise light emitting diode security monitoring lighting devices of first embodiment of the invention
Circuit structure diagram.Two stepwise light emitting diode security monitoring lighting devices (abbreviation lighting device) 100 include PMU
110th, photosensitive switch control unit 120, movement detection unit 130, load and power control unit 140 and luminescence unit 150.Electricity
Source control unit 110 is used to provide the power supply needed for system operation, and its structure includes for example existing AC/DC voltage conversion electricity
Road (AC/DC voltage converter).Photosensitive switch control unit 120 be, for example, photo resistance, its be coupled to load and
Power control unit 140, for detecting ambient brightness to judge daytime and night.Movement detection unit 130 is, for example, passive red
Outer thread detector (Passive Infrared Sensor, PIR), it is coupled to load and power control unit 140, for examining
Survey whether someone enters.When someone enters in the detection range of movement detection unit 130, movement detection unit 130 can be sent
Detection signal, send load and power control unit 140 to.
Microcontroller implementation can be used in load and power control unit 140, and it is coupled to luminescence unit 150, can be according to light
The detection signal of quick switch control unit 120 and movement detection unit 130, control the brightness of luminescence unit 150.Luminescence unit
150 may include multiple light emitting diodes and switch element.Load and power control unit 140 can control luminescence unit 150, with
Produce more than at least two brightness change.
In the present embodiment, when photosensitive switch control unit 120 detects that ambient brightness is less than preset value (darkness), bear
Carry and power control unit 140 performs optical mode control, open luminescence unit 150, luminescence unit 150 is produced high-order brightness, again
By a preset time, the energy saver mode of low order brightness is switching to.When photosensitive switch control unit 120 detects that environment is bright
When degree is higher than preset value (dawn), load and power control unit 140 can close luminescence unit 150.In the power save mode, row is worked as
When dynamic detection unit 130 detects personnel's action, load and power control unit 140 can improve the electricity for flowing through luminescence unit 150
Stream, luminescence unit 150 is produced high-order brightness and continue one section of of short duration preset time., can be certainly after of short duration preset time
It is dynamic to reduce the electric current for flowing through luminescence unit 150, luminescence unit 150 is produced low order brightness to save the energy.
Fig. 2A is refer to, it show the circuit diagram of the lighting device 100 of first embodiment of the invention.Photosensitive switch
Control unit 120 is realized with optical sensor 220；Movement detection unit 130 is realized with movement detection device 230；Load and power control
Unit 140 processed is realized by microcontroller 240.Luminescence unit 250 includes three light emitting diode L1~L3 of series connection.Light-emitting diodes
Pipe L1~L3 is connected between a dc source and transistor Q1, and its dc source can be provided by PMU 110.It is brilliant
Body pipe Q1 is N channel metal-oxide half field effect transistor (NMOS).Transistor Q1 is connected to three light emitting diode L1~L3 of series connection
Between ground connection GND.Load and power control unit 140 realize that it can export pulse wave width modulation letter with microcontroller 240
Number (PWM) to transistor Q1 grid, to control the average current that luminescence unit 250 is turned on.It is worth noting that, above-mentioned figure
2A element is only one embodiment of the invention, and the present invention is not restricted to Fig. 2A element.
Referring to Fig. 2 B, it show the pulse wave width modulation signal PWM of first embodiment of the invention oscillogram.
Under optical mode control, pwm signal makes the time T that transistor Q1 is turned ononCompared with deadline ToffIt is long.In the power save mode, PWM believes
The time T for turning on number transistor Q1onCompared with deadline ToffIt is short.Compare the brightness of illumination of two kinds of mode of operations, in optical mode control
Under, due to the time T of Q1 conductingsonIt is long so that the average current of driving luminescence unit 250 is higher, so brightness is higher, belongs to high
Rank brightness；In the power save mode, due to the time T of Q1 conductingsonIt is short so that the average current of driving luminescence unit 250 is relatively low, institute
It is relatively low with brightness, belong to low order brightness.
Microcontroller 240 can close luminescence unit 250 in the daytime, starting optical mode control at dark, opening luminescence unit
250, it is produced the energy saver mode of incision low order illumination after high-order brightness for a period of time.In the power save mode, when action is examined
When survey device 230 detects people, luminescence unit 250 can be switched to high-order brightness to have the function that to illuminate or warn.It is luminous single
After member 250 maintains the one of short duration time of high-order brightness, low order brightness can be automatically switched to save the energy.
In addition, microcontroller 240 is coupled to a time setting unit 260, this time setup unit 260, which is available for users to, to be set
Determine the duration of its high-order brightness or the time of all light pattern, the present embodiment under optical mode control to be not limited.
(second embodiment)
Refer again to Fig. 1, the brightness of its luminescence unit 150 change can also by adjust the number for the light source load opened come
Produce more than at least two brightness.In the present embodiment, lighting device 100 can by light part light emitting diode or
Whole light emitting diode produces low order brightness and high-order brightness.
Referring to Fig. 3 A, it show the circuit diagram of the lighting device 100 of second embodiment of the invention.Fig. 3 A
With Fig. 2A main difference is that luminescence unit 350, including three light emitting diode L1~L3 and nmos pass transistor Q1, Q2.
Light emitting diode L1~L3 connects with transistor Q1, and is connected between dc source and fixed current controling circuit 310.Separately
Outside, transistor Q2 and light emitting diode L2 and L3 both ends are into being connected in parallel.Transistor Q1 and Q2 grid are connected respectively to micro-
Controller 240 indicates PC and PS pin.In the present embodiment, the limitation of fixed current controling circuit 310 driving light emitting diode L1
To determine electric current, i.e. L1~L3's~L3 electric current is lighted with constant current mode (Constant-Current Mode).
Reference picture 3A, the PC pin controlling transistor Q1 on or off of microcontroller 240；When PC pins be high potential or
Low potential, cause Q1 on or off respectively, for being turned on and off all light emitting diode L1~L3.Microcontroller 240
PS pin controlling transistor Q2 on or off, two current loops 351,352 can be formed on luminescence unit 350.Work as micro-control
The PS pins of device 240 processed are high potentials, and Q2 is turned on, and current loop 351 passes through light emitting diode L1 and transistor Q2；When PS pins
It is low potential, Q2 ends, and current loop 352 passes through light emitting diode L1~L3 of whole.In this way, microcontroller 240 can lead to
The light emitting diode number to be opened of transistor Q2 controls is crossed, to produce high or low rank brightness.
When optical sensor 220 detects that ambient brightness is higher than preset value, microcontroller 240 is low from PC pins submitting one
Potential voltage, whole light emitting diode L1~L3 that transistor Q1 ends and closed in luminescence unit 350.Work as optical sensor
220 when detecting that ambient brightness is less than preset value, and microcontroller 240 starts optical mode control, namely sends out a height from PC pins
Potential voltage and PS pins are low potentials so that transistor Q1 is turned on and transistor Q2 ends, and forms the electricity of Fig. 3 A signs
Road 352 is flowed back to, opens three light emitting diode L1~L3 in luminescence unit 350 to produce high-order brightness.High-order brightness continues
After one default time, microcontroller 240 enters energy saver mode, namely PC pins maintain high potential, but PS pins are sent
Going out a high-potential voltage turns on transistor Q2, forms the current loop 351 of Fig. 3 A signs, therefore only single light-emitting diodes
Pipe L1 lights, and produces low order brightness.
In the power save mode, when movement detection device 230 detects personnel's action, the PS pins of microcontroller 240 are of short duration
Low-potential voltage is switched to from high potential, makes the of short duration cut-offs of transistor Q2, forms current loop 352, is opened in luminescence unit 350
All light emitting diode L1~L3, make luminescence unit 350 it is of short duration produce high-order brightness.Wherein, luminescence unit 350 is to determine electricity
(definite value) driving is flowed, so its brightness can be directly in direct ratio with the light emitting diode number lighted.Fig. 3 B are the another of Fig. 3 A
One type embodiment, nmos pass transistor Q1 and Q2 switching function are substituted with relay J1 and J2.Microcontroller 240 is via control
NPN transistor (NPN bipolar junction transistor) Q4, Q5 comes control relay J2 and J1.Resistance R16, R17
For current-limiting resistance.
Under optical mode control, relay J1 adhesives, and relay J2 is flicked, determine electric current drive all light emitting diode L1~
L3 produces high-order brightness；In the power save mode, relay J1 and J2 adhesives, determine electric current and only drive light emitting diode L1 to produce low order
Brightness, and when movement detection device 230 detects personnel's action, the PS pins of microcontroller 240 are of short duration to be switched from high potential
Into low-potential voltage so that relay J2 is of short duration to flick adhesive again, produces of short duration high-order brightness.
In order to increase the contrast of high/low rank brightness, light emitting diode L1 can use 2700K color temperature light emitting diodes, and
Light emitting diode L2, L3 can use 5000K color temperature light emitting diodes.Light emitting diode number can included by luminescence unit 350
With more than three, such as 5 or 6.Transistor Q2 relative can be parallel to the both ends of multiple light emitting diodes, with adjustment it is high/
The difference of low order brightness.In addition, luminescence unit 350 may also comprise multiple transistor Q2, each light emitting diode is respectively coupled to
Both ends to provide more selection modes.Microcontroller 240 can be according to design requirement, and in different situations, decision is wanted
The light emitting diode number lighted.After the explanation via above-described embodiment, the art tool usually intellectual be able to should push away
Know embodiments thereof, be not added with repeating herein.
(3rd embodiment)
Fig. 1 is referred again to, its luminescence unit 150 can also include Phase angle control device and one or more AC light-emittings in parallel
Diode, Phase angle control device are coupled between said one or multiple alternating-current light emitting diodes in parallel and AC power.At this
In embodiment, load and power control unit 140 can adjust the average electrical power of luminescence unit 150 via Phase angle control device,
To produce the change of low order brightness and high-order brightness.
Fig. 4 A are refer to, it show the circuit diagram of the lighting device 100 of third embodiment of the invention.Fig. 4 A and figure
3 main difference is that the light source load of luminescence unit 450 is alternating-current light emitting diode ACLED, is couple to AC power, and send out
Light unit 450 also includes Phase angle control device 451.Phase angle control device 451 includes controllable silicon 452, zero-crossing detection circuit 453 and electricity
Hinder R.When optical sensor 220 detects that ambient brightness is higher than preset value, microcontroller 240 closes luminescence unit 450.When light passes
When sensor 220 detects that ambient brightness is less than preset value, microcontroller 240 starts optical mode control, opens luminescence unit 450.
Under optical mode control, microcontroller 240 is sent out pulse signal via resistance R to trigger controllable silicon 452, produced from a control pin
A raw big conduction phase angle, makes luminescence unit 450 produce high-order brightness, after continuing one default time, by same branch
Control pin sends out the pulse signal of energy saver mode to trigger controllable silicon 452, produces a small conduction phase angle, makes luminescence unit
450 are switching to the energy saver mode of low order brightness from high-order brightness.In the power save mode, when movement detection unit 230 detects
When personnel take action, microcontroller 240 controls the of short duration pulse signal for sending out optical mode control of pin by same branch, makes luminescence unit 450
High-order brightness is produced, and low order brightness is replied after continuing one of short duration time.
In alternating-current light emitting diode ACLED Lighting control, microcontroller 240 combines zero-crossing detection circuit 453, passed through
Detected zero crossing time while passing through no-voltage (such as AC wave shape), the pulse signal synchronous with AC power is sent out,
Controllable silicon 452 in triggering Phase angle control device 451 is allowed to turn on, and thus changes the average electrical power for being input to luminescence unit 450.
Because alternating-current light emitting diode ACLED has a cut-in voltage V begun to turn ontIf pulse signal triggering controllable silicon 452 makes
Conducting time point it is inaccurate, when trigger pulse occurs, the instant value of alternating voltage is less than alternating-current light emitting diode ACLED
Cut-in voltage Vt, it is likely to result in alternating-current light emitting diode ACLED flickers or non-luminous phenomenon.So microcontroller 240
Caused pulse signal must fall behind one suitable lead time of zero crossing of AC supply voltage string ripple.
Assuming that the voltage amplitude of AC power is Vm, frequency f, then for having cut-in voltage VtLight source load, micro-control
Device 240 processed exports the zero crossing lead time t of trigger pulseDA scope must be limited in：to<tD<1/(2f)–to.Wherein to
=(1/2 π f) sin-1(Vt/Vm).This criterion is applied to various alternating-current light emitting diode, to determine that controllable silicon 452 is exchanging
The positive-negative half-cycle of power supply, which can all be stablized, to be triggered.With the V of alternating-current light emitting diodet(rms) exemplified by=80V, and V is assumedm
(rms)=110V and f=60Hz, obtains to=2.2ms and 1/ (2f)=8.3ms.Therefore, the modulation that microcontroller 240 exports
The pulse of phase angle, it falls behind the lead time t of the zero crossing of alternating voltage string rippleDIt must design in 2.2ms<tD<6.1ms model
Enclose.
Fig. 4 B are refer to, Fig. 4 B are two stepwise light emitting diode security monitoring lighting devices of third embodiment of the invention
Waveform diagram.Waveform (a)~(d) in Fig. 4 B represents AC power, zero cross detection circuit 453, microcontroller 240 respectively
Voltage waveform between 450 two end points of output connecting pin and luminescence unit of zero crossing delay pulse.Zero-crossing detection circuit
The alternating voltage string ripple of 453 AC powers, such as the small figure (a) in Fig. 4 B, it is transformed into low and a high magnitude of voltage including one
Symmetrical square wave, such as the small figure (b) in Fig. 4 B.In the zero crossing of alternating voltage string ripple, symmetrical square wave is upgraded to high electricity from low voltage value
Pressure value, or drop to low voltage value from high-voltage value.That is, the edge of symmetrical square wave corresponds to alternating voltage string ripple in sequential
Zero crossing.Microcontroller 240 produces the mistake relative to alternating voltage string ripple according to the waveform that zero-crossing detection circuit 453 is exported
The zero crossing delay pulse of zero point, such as the small figure (c) in Fig. 4 B.Zero crossing delay pulse is in sequential relative to symmetrical square wave
Edge falls the latter lead time tD。tDIt must trigger and make to determine that controllable silicon 452 can be stablized in an effective range
Obtain alternating-current light emitting diode ACLED conductings.Small figure (d) in Fig. 4 B is added between alternating-current light emitting diode ACLED both ends
Voltage waveform, the brightness of luminescence unit 450 and alternating-current light emitting diode ACLED conducting period tonIt is relevant, namely tonLength
It is directly proportional to the average electrical power for being input to alternating-current light emitting diode ACLED.Compare the difference of optical mode control and energy saver mode,
Alternating-current light emitting diode ACLED has longer conducting period t under optical mode controlon, send high-order brightness；In energy saver mode,
Alternating-current light emitting diode ACLED conducting period tonIt is shorter, then send low order brightness.
Fig. 5 is refer to, it show the circuit diagram of the lighting device 100 of third embodiment of the invention.Lighting device
100 luminescence unit 550 includes alternating-current light emitting diode ACLED1 and ACLED2 and Phase angle control device 551.Phase angle control device bag
Include controllable silicon 552 and 553, zero-crossing detection circuit 554 and resistance R1 and R2.Fig. 5 luminescence unit 550 and Fig. 4 A luminous list
The difference of member 450 is that luminescence unit 550 has more than one alternating-current light emitting diode and more than one controllable silicon, and exchanges hair
Optical diode ACLED1 and alternating-current light emitting diode ACLED2 light emission color temperature can select to differ.
In Fig. 5 embodiment, alternating-current light emitting diode ACLED1 lights for high color temperature, and alternating-current light emitting diode ACLED2 is
Low colour temperature lights.Under optical mode control, microcontroller 240 controls conduction phase angle while lighting via Phase angle control device 551
Alternating-current light emitting diode ACLED1 and ACLED2, luminescence unit 450 is set to produce high-order brightness and mixing colour temperature illumination.In energy-conservation mould
Under formula, microcontroller 240 controls conduction phase angle via Phase angle control device 551 and only lights alternating-current light emitting diode ACLED2,
Luminescence unit 450 is set to produce low order brightness and the illumination of low colour temperature.And in the power save mode, when movement detection device 230 detects
When personnel take action, microcontroller 240 controls maximum conduction phase angle via Phase angle control device 551 and lights alternating-current light emitting diode
ACLED1 and ACLED2, luminescence unit 450 is produced high-order brightness and high color temperature illumination, produce the high brightness with alarm function
And high shade contrast, and continue one of short duration default time.Lighting device accordingly, the illumination of high or low rank brightness can be produced,
And the illumination of high-order brightness and low order brightness has and differs tone.The operating principle of other parts of luminescence unit 550 is with lighting
Unit 450 is identical, repeats no more.
(fourth embodiment)
Fig. 6 is refer to, it show the circuit diagram of the lighting device 100 of fourth embodiment of the invention.Luminescence unit
650 implement Fig. 1 luminescence unit 150, including alternating-current light emitting diode ACLED1~3 of three identical luminous powers and switch
651 and 652.Switch 651 and 652 can be relay.Alternating-current light emitting diode ACLED1 and ACLED2 it is in parallel and with switch
652 series connection, form twice of power light-sources, and this is in parallel with alternating-current light emitting diode ACLED3 again, form three times power light-sources, via
Switch 651 is couple to AC power.In addition, Fig. 6 realizes Fig. 1 load and power control unit 140 with microcontroller 240.It is micro-
The PC and PS of controller 240 pin be respectively coupled to switch 651 and 652, output voltage signal difference controlling switch 651 and
652 is short-circuit or breaking to produce.
Under optical mode control, PC the and PS pins controlling switch 651 and 652 of microcontroller 240 produces short circuit simultaneously, exchanges
Light emitting diode ACLED1~3 are thus connected to AC power so that luminescence unit 650 produces the high-order brightness of three times power.
After high-order brightness continues one section of setting time, microcontroller 240 cuts energy saver mode, maintains switch 651 in short-circuit condition, but
The open circuit of PS pins controlling switch 652, only alternating-current light emitting diode ACLED3 are connected to AC power so that luminescence unit 650
Produce the low order brightness of one times of power.In the power save mode, when movement detection device 230 detects personnel's action, microcontroller
240 of short duration starting switches 652 produce short circuit, send the high-order brightness of three times power and continue one section of preset time, return out
The state of 652 open circuits is closed, sends the low order brightness of one times of power.Fig. 6 lighting device therefore can in a simple manner, via control
System switch 651 and 652 produces at least 3:The two benches illumination of 1 brightness contrast.
Fig. 6 alternating-current light emitting diode ACLED1 and ACLED2 can be high luminous power and 5000K color temperature light sources, and
Alternating-current light emitting diode ACLED3 is low luminous power and 2700K color temperature light sources, then is not necessary to use zero-crossing detection circuit, from friendship
Stream light emitting diode produces two benches illumination, and there is stronger brightness and colour temperature to contrast for it.
(the 5th embodiment)
Reference picture 7, it show the circuit diagram of the lighting device 100 of fifth embodiment of the invention.Fig. 7 luminous list
Member 750 is to be connected in alternating-current light emitting diode ACLED3 with a commutation diode D with the difference of Fig. 6 luminescence unit 650.It is whole
It is in parallel with switch 753 to flow diode D, and is connected between alternating-current light emitting diode ACLED3 and switch 751.When switch 753 is led
When logical, the AC power by alternating-current light emitting diode ACLED3 is Full wave shape.When switch 753 is breaking, pass through AC light-emitting
Diode ACLED3 AC power is positive half-wave shape because of commutation diode D rectification, its alternating-current light emitting diode ACLED3
Luminous power be left half.
Switch 753 is equally controlled by the PS pins of microcontroller 240 with switch 752, synchronous to produce short circuit or open circuit.If three
The luminous power of individual alternating-current light emitting diode ACLED1~3 is identical, under optical mode control, PC the and PS pins of microcontroller 240
Controlling switch 751 and switch 752~753 produce short circuit simultaneously, and alternating-current light emitting diode ACLED1~3 light simultaneously so that hair
Light unit 750 produces the high-order brightness for being three times in single LED power.In the power save mode, microcontroller 240 maintains
The short circuit of switch 751, but the open circuit of controlling switch 752 and 753.Now, only alternating-current light emitting diode ACLED3 can light.Because hand over
Power supply is flowed after commutation diode D rectifications, only the waveform of remaining positive half-wave, so alternating-current light emitting diode ACLED3's is luminous
Power is only without the half under rectification state.Under high-order brightness, alternating-current light emitting diode ACLED1~3 can all light, and
Under low order brightness, only alternating-current light emitting diode ACLED3 can produce the brightness of power half.It is brighter with low order than higher-order brightness
Degree, the ratio of its luminous power is 6 to 1, therefore can produce very strong brightness contrast, to have the function that to warn invader.
It should be noted that in the 5th embodiment, luminescence unit is not limited to alternating-current light emitting diode, and luminescence unit can
To be the AC-operated light sources of alternating-current light emitting diode, incandescent lamp or fluorescent lamp etc..
According to five embodiments of the invention, the more several light emitting diodes of utilization, with reference to microcontroller and various detecting element,
One type lighting device is realized with easy drive circuit.Can be with automatic start highlight illumination, afterwards in ambient brightness deficiency
Exchange-column shift illuminates into low-light level.In addition, when someone enters detection zone, lighting device can switch to highlighted from low-light level
Degree illumination, to provide the sufficient illumination of personnel, or strong brightness and colour temperature contrast are produced, effractor is monitored.
Embodiments of the invention are the foregoing is only, it is not intended to the scope of the claims of the limitation present invention.
Claims (7)
- A kind of 1. two stepwise light emitting diode security monitoring lighting devices, it is characterised in that including a luminescence unit, a load and Power control unit, a photosensitive switch control unit, an action detection unit and a PMU, the luminescence unit include The light emitting diode of one or more series connection, the load and power control unit receive the photosensitive switch control unit and this action The signal of detection unit opens the light emitting diodes of one or more series connection in the luminescence unit, and it is bright to send a low order respectively Degree or a high-order brightness are illuminated, and wherein load and power control unit includes a microcontroller, is operated with write-in program；Wherein, the microcontroller is electrically connected with a transistor, and the electric transistor concatenates the PMU and institute State luminescence unit；Wherein, the microcontroller for having procedure code exports a pulse wave width modulation signal (PWM) to a grid of the transistor Pole, to control the ON time of the transistor and deadline, the ON time of the transistor and deadline be used for from The PMU transmits different average currents, to drive the luminescence unit to produce different brightness, wherein described Transistor described in microprocessor control is corresponding to have a turn-on cycle, so that the luminescence unit correspondingly produces the low order brightness Or the high-order brightness is illuminated.
- 2. two stepwises light emitting diode security monitoring lighting device according to claim 1, it is characterised in that the multiple The light emitting diode of series connection has identical or different luminous power and colour temperature.
- 3. two stepwises light emitting diode security monitoring lighting device according to claim 1, it is characterised in that the micro-control Device processed closes the luminescence unit in the daytime, starts an optical mode control in the microcontroller at dark, opens the luminous list Member, the luminescence unit is set to cut the energy-conservation that the low order brightness is illuminated after producing the high-order brightness for a period of time Pattern.
- 4. two stepwises light emitting diode security monitoring lighting device according to claim 3, it is characterised in that in the light Under control pattern, due to the time length of the conducting of the transistor so that drive the average current of the luminescence unit higher, it is described The brightness of luminescence unit belongs to the high-order brightness.
- 5. two stepwises light emitting diode security monitoring lighting device according to claim 3, it is characterised in that in the section Under energy pattern, because the time of the conducting of the transistor is short so that drive the average current of the luminescence unit relatively low, it is described The brightness of luminescence unit belongs to the low order brightness.
- 6. two stepwises light emitting diode security monitoring lighting device according to claim 3, it is characterised in that in the section Under energy pattern, when the movement detection unit detects people, the luminescence unit will switch to the high-order brightness to reach Illumination or the effect of warning.
- 7. two stepwises light emitting diode security monitoring lighting device according to claim 3, it is characterised in that the micro-control Device processed is coupled to a time setting unit, and the time setting unit is available for users to described luminous under the setting optical mode control The duration of the high-order brightness of unit, or the time of an all light pattern.
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| CN201610160945.9A CN105828473B (en) | 2011-07-14 | 2011-07-14 | Two stepwise light emitting diode security monitoring lighting devices |
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| CN2011102017855A CN102883496A (en) | 2011-07-14 | 2011-07-14 | Safety monitoring and lighting device for two-order type light emitting diode |
| CN201610160945.9A CN105828473B (en) | 2011-07-14 | 2011-07-14 | Two stepwise light emitting diode security monitoring lighting devices |
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| TW201914717A (en) * | 2017-09-29 | 2019-04-16 | 美商科斯莫燈飾公司 | Wire and stripping method thereof, and light device |
| TWI657719B (en) * | 2018-04-09 | 2019-04-21 | 國立高雄科技大學 | Pulse frequency-adjustable system |
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| CN1434242A (en) * | 2002-01-21 | 2003-08-06 | 诠兴开发科技股份有限公司 | Energy-saving type LED lamp set |
| CN201001215Y (en) * | 2007-01-09 | 2008-01-02 | 合肥三川自控工程有限公司 | Sound, light-operated constant-current LED lighting lamp |
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| CN102123550A (en) * | 2011-01-10 | 2011-07-13 | 中山兴瀚科技有限公司 | Intelligent lighting control method based on architecture of Internet of Things (IOT) |
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| CN201182027Y (en) * | 2008-04-02 | 2009-01-14 | 陈家德 | Two-stage type illumination control system with two light source load |
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| CN1434242A (en) * | 2002-01-21 | 2003-08-06 | 诠兴开发科技股份有限公司 | Energy-saving type LED lamp set |
| CN201001215Y (en) * | 2007-01-09 | 2008-01-02 | 合肥三川自控工程有限公司 | Sound, light-operated constant-current LED lighting lamp |
| CN102123550A (en) * | 2011-01-10 | 2011-07-13 | 中山兴瀚科技有限公司 | Intelligent lighting control method based on architecture of Internet of Things (IOT) |
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