CN102256407A - Intelligent device and method for driving LED street lamps at constant current by directly utilizing commercial power - Google Patents
Intelligent device and method for driving LED street lamps at constant current by directly utilizing commercial power Download PDFInfo
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- CN102256407A CN102256407A CN2010101812681A CN201010181268A CN102256407A CN 102256407 A CN102256407 A CN 102256407A CN 2010101812681 A CN2010101812681 A CN 2010101812681A CN 201010181268 A CN201010181268 A CN 201010181268A CN 102256407 A CN102256407 A CN 102256407A
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Abstract
The invention relates to an intelligent device and method for driving LED street lamps at constant current by directly utilizing commercial power. The method is characterized by comprising the following steps of: according to a voltage signal extracted by a current sampling circuit and converted from the current of the LED street lamps, and a voltage zero-crossing signal, extracted from a zero-crossing detection circuit, of each half circle of the power supply voltage, calculating and intelligently analyzing and processing the signals by a processor; synchronously controlling an open angle of an electronic voltage regulator to each half circle of the power supply voltage in real time; dynamically and stably outputting a power supply voltage value, converting the stably output power supply voltage into constant direct current for directly driving the LED street lamps, and controlling the brightness of the street lamps in different time periods to realize on-demand illumination. The intelligent system comprises the electronic voltage regulator, the processor, the power supply voltage zero-crossing detection, the overcurrent, overvoltage and output short-circuit protection, the temperature detection of the LED lamps, the environmental brightness detection, the regional setting and the like. The intelligent device and the method disclosed by the invention can be used for driving LED street lamps and are also applied to driving LED illuminating lamps, decorative lamps, tunnel lamps, underwater lamps and the like at constant current.
Description
Technical field
The present invention relates to directly use the intelligent apparatus and the method for municipal power constant current driving LED street lamp, intelligent apparatus and LED wick sheet constitute LED street lamp and other LED illuminating products, with intelligence control method constant-current driving LED street lamp and other LED illuminating products.
Background technology
The scale in LED street lamp market is quite surprising, the competition in LED street lamp market also is quite fierce, LED street lamp manufacturer should step up patent and technology layout, pay attention to the research and development of product technology, improve our core competitiveness, only, can win more cooperation and development business opportunity in current keen competition market in patent and the more right of speech of technical contention.
City street lamp and decorative illumination lamp electricity consumption power consumption are very surprising, night, the brightness on street lighting road surface was low, can influence human pilot and pedestrian's safety, vehicle flowrate, flow of the people are seldom the time at dead of night, can suitably reduce road surface brightness with saves energy, adopt the method for closed portion street lamp in the late into the night can influence the road surface luminance uniformity at present, not ideal;
Adopt intelligent control LED street lamp brightness at times, illuminate the road surface equably, can save electric energy more, effectively reduce the temperature of LED street lamp, prolong the useful life of LED street lamp, very science and environmental protection by the needs of vehicle flowrate, flow of the people.
Different zones, different seasons, the length of time at night all is inequality, street lamp has opened early or has cut out late, can waste electric energy, the direct influence of meeting and threat human pilot and pedestrian's safety left late or closed early by street lamp, depends merely on Artificial Control, there is the problem of ON/OFF lamp sooner or later unavoidably, adopt ambient brightness to detect control and combine with the control of ON/OFF lamp time, the method for the ON/OFF lamp of intelligent control LED street lamp is more reasonably pressed actual needs ground control road lighting at night.
The utility model content
In order to solve direct intelligence controlling device and method problem with municipal power constant current driving LED street lamp, improve the useful life of efficient, saving electric energy and the prolongation LED street lamp of driving power, realize the ideal of illumination as required, the invention provides direct intelligent apparatus and method with municipal power constant current driving LED street lamp.This intelligent apparatus uses common electronic devices and components commonly used; be easy to produce combination; it is low-cost solution; employing is control core with the processor; has the Based Intelligent Control feature: automatic detection, analysis automatically, autodiagnosis, adjustment automatically, the automatic protection; Based Intelligent Control has greater flexibility, can provide enough processing capacity to support other characteristics.
The technical solution adopted for the present invention to solve the technical problems is:
The voltage signal that the LED street lamp drive current that extracts according to current sampling circuit converts to, voltage zero-crossing signal with each half cycle of supply voltage that extracts from zero cross detection circuit, treated device calculates and intellectual analysis is handled, in real time and the Synchronization Control electronic pressure controller to the opening angle of each half cycle of supply voltage, dynamic stability output supply voltage value, the constant DC that is transformed into the supply voltage of described stable output flows direct driving LED street lamp, realizes the ideal of illumination as required, comprising:
Electronic pressure controller is made up of bidirectional triode thyristor, is installed in the supply voltage input; Or form by one-way SCR or transistor or metal-oxide-semiconductor field effect transistor or electronic switch, be installed between rectification circuit output end and the filter circuit input; Or form by one-way SCR, described one-way SCR is installed in the rectifier circuit as the partial rectification diode in the bridge rectifier; Described electronic pressure controller is subject to processing the Based Intelligent Control of device, adjusts the opening angle to each half cycle of supply voltage in real time and synchronously, and dynamic stability output supply voltage value realizes controlling as required the brightness of LED street lamp;
Zero cross detection circuit is installed in the supply voltage input, and the voltage zero-crossing signal sending processor of detected each half cycle of supply voltage of described zero cross detection circuit is used as the synchronizing signal that processor is controlled described electronic pressure controller;
Overcurrent, overvoltage and output short circuit protection circuit, temperature-sensitive element by positive temperature coefficient is formed, be installed in the arbitrary position in the principal current series loop between supply voltage input and the LED street lamp, when overcurrent, overvoltage or output short-circuit appear in intelligence controlling device, the resistance value of the temperature-sensitive element of positive temperature coefficient can increase rapidly, the protection intelligent control device system; The temperature-sensitive element of described positive temperature coefficient can substitute with current foldback circuit, plays overcurrent, overvoltage and output short circuit protection effect equally;
Current sampling circuit is installed in the output of current rectifying and wave filtering circuit, and current sampling circuit converts the drive current of LED street lamp to the voltage detecting port of corresponding voltage signal sending processor with it;
Temperature sensing circuit, temperature sensor are installed on the LED street lamp lamp socket, and testing circuit is installed on the detection port of described processor; When the temperature that described temperature sensing circuit detects the LED lamp was higher than the maximum permissible temperature value, processor can be controlled the opening angle that electronic pressure controller reduces each half cycle of supply voltage, until stablizing the LED light temperature in the temperature value of the highest permission;
The ambient brightness testing circuit, photosensitive detection components and parts are installed in lamp body can well accept the naturally brightness, but be not subjected on the position that the brightness of street lamp own influences, testing circuit is installed on the detection port of described processor, and the ambient brightness detection signal is for the ON/OFF of processor control LED street lamp;
The zone initialization circuit is installed on the port of described processor, sets the LED street lamp and uses in the area of different longitudes, different latitude, for the different ON/OFF lamp time of processor control;
The LED street lamp is installed in the output of described current rectifying and wave filtering circuit;
Processor is installed between testing circuit and the control circuit.
Described intelligent apparatus, adopting processor is the intelligence control method of core, processor comprises:
Port, self-checking port, time set port, output demonstration connectivity port etc. are set in supply voltage control port, current sampling detection port, zero passage detection port, temperature detection port, ambient brightness detection port, zone;
Wherein:
The self-checking port, the state of automatic diagnosis processor internal processes and peripheral circuit;
The time set port, the real-time time of setting perpetual calendar or hour totalizer;
Output shows the connectivity port, shows real-time time perpetual calendar or hour totalizer.
The processor internal preset has the LED street lamp specifically to use different longitudes and different latitude zone time difference data group surely, regional initialization circuit setting with the processor outside makes land used, processor inside also presets and annual is short to the longest length time-variable data group at night of time at night most from the time at night, processor inside also presets different periods during turning on light night every day the data set of different brightness, and described processor is according to the above-mentioned setting data group control LED street lamp ON/OFF lamp time every night, the length of lighting time every night, there are different brightness the different periods during turning on light every night.
Processor is according to the real-time time, the lighting time of zones of different ON/OFF lamp time data information correspondence of perpetual calendar or accumulative total timing, and ambient brightness turn on light signal and supply voltage zero cross signal, opens the LED street lamp;
Described processor is at the initial instant of opening the LED street lamp, the control electronic pressure controller is opened with low-angle the opening angle of each half cycle of supply voltage, and strengthen the opening angle of electronic pressure controller at short notice gradually, until being stabilized on the needed constant current value of LED street lamp;
Described supply voltage zero cross signal is the necessary condition of opening the LED street lamp, turn on light signal and lighting time signal of ambient brightness is two alternative conditions, when opening the LED street lamp, turn on light signal and lighting time signal of ambient brightness possesses one of them condition, described processor is just controlled electronic pressure controller and is opened the LED street lamp brightness less than full power, when both conditions all possessed, described processor was just controlled the electronic pressure controller full power and is opened the LED street lamp brightness;
When clocking method adopts the method for accumulative total timing, can adopt annually to reset.
There was the data set of different brightness different wagon flows, the stream of people's period during the processor internal preset had turn on light night every day surely, and the data set of these different brightness is to there being different reference voltage values;
The voltage signal sending processor that the LED street lamp driving current value of extracting with the electric current sampling method converts to, handle with the comparison of reference voltage value data set, calculating and intellectual analysis that described different brightness of different periods are corresponding, in real time and the Synchronization Control electronic pressure controller to the opening angle of each half cycle of supply voltage, the dynamic stability electronic pressure controller has different output voltage values in the difference periods;
Night every day controlled the LED street lamp by described processor has different brightness in the different periods, be transformed into the process of low-light level from high brightness, or be transformed into the process of high brightness from low-light level, adopt slow continually varying method to change, or the method that adopts staged to increase step by step/subtract changes, or adopts and slowly change continuously and the method for two kinds of mixing that staged increases step by step/subtracts is changed.
When described processor is regulated new reference voltage value less than before reference voltage value, or detect the current sampling magnitude of voltage when presetting reference voltage value, processor can reduce the opening angle of electronic pressure controller to each half cycle of supply voltage fast, allows in the accuracy rating until being stabilized in reference voltage value;
When regulating new reference voltage value greater than before reference voltage value, processor examines, or measure the drive current sampling voltage value when presetting magnitude of voltage, processor can slowly strengthen the opening angle of electronic pressure controller to each half cycle of supply voltage, and the new magnitude of voltage that is presetting until dynamic stability allows in the accuracy rating.
Described intelligent apparatus the sampling voltage value that overcurrent, overvoltage or output short-circuit cause current sampling circuit occurs and increases rapidly, and during greater than the highest reference voltage value that presets, processor can reduce the opening angle of electronic pressure controller to each half cycle of supply voltage rapidly, still be higher than the highest reference voltage value that presets if reduce the back sampling voltage value repeatedly, close LED street lamp drive current.
When described supply voltage zero cross detection circuit detects less than zero cross signal, close the LED street lamp immediately;
Described processor closes modulating signal according to the real-time time of the fixed regional time difference data group of internal preset, night length time-variable data group and perpetual calendar or accumulative total timing pairing turn off the light time and ambient brightness to be determined to turn off the light;
When the time of turning off the light and ambient brightness close modulating signal when possessing one of them condition, processor is controlled described electronic pressure controller small-power driving LED street lamp, and both conditions all possess when turning off the light, and processor can cut out the LED street lamp.
Directly use the intelligence controlling device and the method for municipal power constant current driving LED street lamp, can comprise whole described features, also can comprise the described feature of part, described processor circuit is used for the drive unit of LED street lamp, the drive unit that also can be used for LED illuminating lamp, LED decorative lamp, LED Tunnel Lamp, LED underwater lamp also can be used for the drive unit of other electronic product.
Part embodiment of the present invention is elaborated with way of example below in conjunction with accompanying drawing, these features of the present utility model, characteristics and advantage will be more readily apparent from;
Figure 1A is one embodiment of the present of invention, with the intelligent apparatus basic circuit diagram of bidirectional thyristor for regulating voltage;
Figure 1B is one embodiment of the present of invention, with the intelligent apparatus functional-block diagram of bidirectional thyristor for regulating voltage;
Fig. 2 A is one embodiment of the present of invention, is the basic flow sheet of intelligence control method;
Fig. 2 B is one embodiment of the present of invention, is the shortest and the longest contrast schematic diagram of time at night of time at night in a year;
Fig. 2 C is one embodiment of the present of invention, is the schematic diagram of the slowly continuous changing method of high/low brightness transition employing at night;
Fig. 2 D is one embodiment of the present of invention, is the schematic diagram that high/low brightness transition employing at night staged increases/subtract method step by step;
Fig. 3 is one embodiment of the present of invention, the intelligence control circuit of the electronic pressure controller of forming with one-way SCR;
Fig. 4 is one embodiment of the present of invention, forms the intelligence control circuit of the electronic pressure controller of rectifier bridge with one-way SCR;
Fig. 5 is one embodiment of the present of invention, the intelligence control circuit of the electronic pressure controller of forming with bidirectional triode thyristor
Fig. 6 is one embodiment of the present of invention, a kind of zero cross detection circuit;
Fig. 7 is one embodiment of the present of invention, with the zero cross detection circuit of fiery ox isolation;
Fig. 8 is one embodiment of the present of invention, with the zero cross detection circuit () of light-coupled isolation;
Fig. 9 is one embodiment of the present of invention, with the zero cross detection circuit (two) of light-coupled isolation;
Figure 10 is one embodiment of the present of invention, LED street lamp temperature sensing circuit;
Figure 11 is one embodiment of the present of invention, the ambient brightness testing circuit.
With reference to Figure 1A and Figure 1B, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, it is characterized in that:
Processor
The core of forming intelligence controlling device, the voltage signal that the LED street lamp drive current that 6. extracts according to current sampling circuit converts to and from zero cross detection circuit
The voltage zero-crossing signal of each half cycle of supply voltage of last extraction, treated device
Calculate and the intellectual analysis processing, in real time and the Synchronization Control electronic pressure controller 2. to the opening angle of each half cycle of supply voltage, dynamic stability output supply voltage value, the supply voltage of described stable output is transformed into constant DC and flows direct driving LED street lamp 9., realize illumination as required, comprise;
1.: surge absorbs and high-frequency filter circuit, is made up of surge absorber 2 and high-frequency filter capacitor 3;
2.: electronic pressure controller, form by bidirectional triode thyristor 4, light activated power thyristor 5 (playing buffer action), electric capacity 7 and resistance 6,8;
3.: the bidirectional triode thyristor drive circuit, form by transistor 9 and resistance 11,12;
4.: rectification circuit, form by rectifier diode 13 or rectifier bridge;
5.: filter circuit, form by filter inductance 14 and filter capacitor 15;
6.: current sampling circuit, to the sampling of the drive current of LED street lamp and convert the voltage signal sending processor to;
7.: current foldback circuit, when short circuit appearred in described intelligent apparatus output, the current foldback circuit resistance value can increase rapidly;
8.: LED street lamp protective circuit, form by protection electric capacity 20 and protection diode 21;
9.: the LED street lamp, form by LED lamp group;
10.: the supply voltage step-down conversion circuit provides low-voltage to use for direct current regulation circuit;
Temperature sensing circuit is made up of temperature sensor 30, detection resistance 29,31, detects the temperature of LED lamp, provides protection LED street lamp to avoid the information of temperatures involved to processor;
With reference to figure 2A, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, its feature is as follows: the basic procedure of described intelligence control method:
" perpetual calendar " 201: provide that the time at night is short to the longest temporal information and real-time time information of time at night most in 1 year;
" lighting time " 202: processor
According to the temporal information that perpetual calendar 201 provides, determine the lighting time of every day;
" zero passage detection signal " 203: the voltage zero-crossing signal sending processor whether supply voltage and each half cycle of supply voltage are arranged is provided
Processor
Detect voltage zero-crossing signal, just open and the control electronic pressure controller;
" brightness signal " 204: by the ambient brightness testing circuit
Detect the natural light brightness of street lamp installation environment, give processor
The information of turning on light is provided;
" turn on light " 205:202,203,204 sending processors
Analyzing and processing is determined whether to turn on light, the 203rd, the necessary condition of turning on light, 202 and 204 both possess one of them condition, processor
Just lighting the LED street lamp less than full power, when 202 and 204 both conditions all possess, processor
Open the LED street lamp brightness with regard to full power;
" current sampling " 206: processor
According to the sampling of the drive current of 206 pairs of LED street lamps and convert the reference voltage value analysis and judgement of voltage signal and brightness requirement to, control electronic pressure controller;
" overcurrent is not? " 207: processor converts the reference voltage value value analysis and judgement of voltage signal and brightness requirement to according to current sampling, drive current has surpassed reference voltage value and has just reduced the opening angle of electronic pressure controller through " reducing electric current " 209 programs, and drive current surpasses reference voltage value and just carries out next program;
" excess temperature is not? " 207: processor
Detected temperatures value analysis and judgement according to " temperature detection " 210, the LED light temperature has surpassed the maximum permissible temperature value, just reduce the opening angle of electronic pressure controller, do not surpass the maximum permissible temperature value, just carry out next program through " reducing electric current " 209 programs;
" light " 211 at times: processor
Light the LED street lamp and enter next determining program according to " different at times brightness settings " 212 setting data analyzing and processing;
" turn off the light the time " 213: processor judges that according to turn off the light time data and the perpetual calendar real-time time set the time of turning off the light does not arrive, and continues to enter " current sampling " 206, and circulation successively downwards turns off the light that time is up, just continues next program;
" turn off the light " 215: processor can be judged together according to luminance detection circuit " brightness pass modulating signal " 214 and " turning off the light the time " 213, if 213, one of 214 both conditions being possessed, processor will be lighted the LED street lamp less than full power, closes the LED street lamp when both conditions all possess immediately.
With reference to figure 2B, intelligent apparatus and embodiment of method that directly uses municipal power constant current driving LED street lamp of the present invention, its feature is as follows: processor has the LED street lamp and uses the shortest one day of time at night and the longest one day information of time at night in regional 1 year, spent the shortest one day of time at night, time at night can extend day by day, crossed time at night the longest day, the time at night can shorten day by day, processor
Provide the ON/OFF lamp time on the same day according to the real-time time of this information and perpetual calendar.
With reference to figure 2C, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, its feature is as follows: processor
Different periods at night every day there is the control of different brightness, is transformed into the process of low-light level, or be transformed into the process of high brightness, adopt slow continually varying method to change from low-light level from high brightness.
With reference to figure 2D, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, its feature is as follows: processor
There is the control of different brightness different periods at night every day, is transformed into the process of low-light level from high brightness, or be transformed into the process of high brightness from low-light level, the method that adopts staged to increase step by step/subtract is changed;
Also can adopt slowly continuous variation and staged to increase/subtract these two kinds methods of mixing variation step by step and change, also can adopt additive method conversion.
With reference to figure 3, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, its feature is as follows:
Described electronic pressure controller by an one-way SCR 66, a light activated power thyristor 5 with trigger electric capacity 7, trigger resistance 6,8 and form, is installed in the output of rectification circuit 34.
Supply voltage 1 (civil power) send one-way SCR 66 through rectification circuit 34 rectifications output, its angle of flow is opened and controlled to described one-way SCR 66 to each half-wave voltage, one-way SCR 66 conducting angles are subjected to the control of light activated power thyristor 5, and light activated power thyristor 5 is subject to processing device
Control, supply voltage after the full-wave rectification is transferred device adjustment control through electronics, after the filter circuit filtering of forming by filter inductance 14, filter capacitor 15, DC power supply is sent current sampling circuit 6. also to drive and is lighted the LED street lamp, current sampling voltage signal sending processor analyzing and processing, resistance 10 is current-limiting resistances of light activated power thyristor 5, the 56th, and the supply voltage zero cross detection circuit.
With reference to figure 4, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, its feature is as follows:
Described electronic pressure controller, form by two one-way SCRs 67 and pulse transformer 69, current-limiting resistance 70, one-way SCR 67 is installed in the rectifier circuit as the partial rectification diode in the bridge rectifier, form bridge rectifier, the 56th, supply voltage zero cross detection circuit with other two rectifier diodes 68;
Transistor 9, resistance 11,12 are formed the drive circuit of pulse transformer 69, and crystal diode 71 is fly-wheel diodes of pulse transformer 69.
With reference to figure 5, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, it is characterized in that:
Described electronic pressure controller is made up of bidirectional triode thyristor 4, isolation optocoupler 5, triggering resistance 72,73,74, and the on/off of isolating optocoupler 5 is by processor
Control, transistor 9, resistance 11,12 are formed the drive circuit of optocoupler 5, and resistance 10 is metering functions.
With reference to figure 6, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, it is characterized in that:
Described zero cross detection circuit
Be installed in the input of supply voltage 1, form, 75 current limliting hypotensive effects of resistance by transistor 76, crystal diode 77, resistance 78,79,75 and electric capacity 80.
With reference to figure 7, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, it is characterized in that:
Described zero cross detection circuit
Be installed in the input of supply voltage 1, form, 75 metering functions of resistance by isolating transformer 81, transistor 76, crystal diode 77, resistance 78,79,75 and electric capacity 80.
With reference to figure 8, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, it is characterized in that:
Described supply voltage zero cross detection circuit
Be installed in the input of supply voltage 1, form by isolation optocoupler 82, decompression capacitor 85, crystal diode 87, current-limiting resistance 84, bleed off electricity group 86, output resistance 83.
With reference to figure 9, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, it is characterized in that:
Described supply voltage zero cross detection circuit
Be installed in the input of supply voltage 1, form by isolation optocoupler 82, decompression capacitor 85, voltage stabilizing didoe 88, current-limiting resistance 84,89, bleed off electricity group 86, output resistance 83.
With reference to Figure 10, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, it is characterized in that:
Described temperature sensing circuit
Temperature sensor 30 is installed on the LED street lamp lamp socket, temperature sensing circuit and processor
Detection port connects, and by detecting resistance 31,29, filter capacitor 92, protecting and form with crystal diode 90,91, detects the temperature of LED lamp, gives processor
Provide protection LED street lamp to avoid the information of temperatures involved.
With reference to Figure 11, of the present invention directly with intelligent apparatus and embodiment of method of municipal power constant current driving LED street lamp, it is characterized in that:
Described ambient brightness testing circuit
Form with crystal diode 93,94 and filter capacitor 95 by photosensitive detection components and parts 26, resistance 27,28, protection; photosensitive detection components and parts 26 are installed in to be accepted the natural environment brightness but not to be subjected on the position that the luminosity of LED street lamp own influences testing circuit output and described processor
Port connect.
Though more than described the embodiment that illustrates more of the present invention, but the those of ordinary skill in the present technique field is to be understood that, these only illustrate, and can make numerous variations or modification to these embodiment, and not deviate from principle of the present utility model and essence.Scope of the present invention is only limited by appended claims.
Above embodiment is used for illustrating the present invention, but not as qualification of the present invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, modification, the change of above embodiment.
Claims (10)
1. directly use the intelligent apparatus and the method for municipal power constant current driving LED street lamp, it is characterized in that:
The voltage signal that the LED street lamp drive current that extracts according to current sampling circuit converts to, voltage zero-crossing signal with each half cycle of supply voltage that extracts from zero cross detection circuit, treated device calculates and intellectual analysis is handled, in real time and the Synchronization Control electronic pressure controller to the opening angle of each half cycle of supply voltage, dynamic stability output supply voltage value, the constant DC that is transformed into the supply voltage of described stable output flows direct driving LED street lamp, comprising:
Electronic pressure controller is installed in the main current loop that can regulate the output supply voltage value;
Overcurrent, overvoltage and output short circuit protection circuit are installed on the position in the principal current series loop between supply voltage input and the LED street lamp;
Processor is installed between testing circuit and the control circuit;
Current sampling circuit is installed in the output of current rectifying and wave filtering circuit;
Zero cross detection circuit is installed in the supply voltage input, and the voltage zero-crossing signal sending processor of detected each half cycle of supply voltage of described zero cross detection circuit deals with the synchronizing signal that device is controlled described electronic pressure controller;
Temperature sensing circuit, temperature sensor are installed on the LED street lamp lamp socket, and testing circuit is installed on the detection port of described processor;
Ambient brightness testing circuit, testing circuit are installed on the detection port of described processor, and photosensitive detection components and parts are installed in lamp body and well accept the naturally brightness, but are not subjected on the position that the brightness of street lamp own influences;
The zone initialization circuit is installed on the port of described processor, and the use of control LED street lamp has the different ON/OFF lamp time in the area of different longitudes, different latitude;
The LED street lamp is installed in the output of described current rectifying and wave filtering circuit.
2. intelligence controlling device as claimed in claim 1 is characterized in that described electronic pressure controller is made up of bidirectional triode thyristor, is installed in the supply voltage input; Or form by one-way SCR or transistor or metal-oxide-semiconductor field effect transistor or electronic switch, be installed between rectification circuit output end and the filter circuit input; Or form by one-way SCR, one-way SCR is installed in the rectifier circuit as the partial rectification diode in the bridge rectifier.
3. intelligence controlling device as claimed in claim 1, it is characterized in that, described overcurrent, overvoltage and output short circuit protection circuit are made up of the temperature-sensitive element of positive temperature coefficient, are installed in the arbitrary position in the principal current series loop between supply voltage input and the LED street lamp;
The temperature-sensitive element of described positive temperature coefficient can substitute with current foldback circuit.
4. intelligent method as claimed in claim 1 is characterized in that, adopting processor is the control core method, and described processor is installed between testing circuit and the control circuit, comprising:
The supply voltage control port is connected with described electronic pressure controller circuit;
The current sampling detection port is connected with described current sampling circuit;
The zero passage detection port is connected with described zero cross detection circuit;
The temperature detection port is connected with described temperature sensing circuit;
The ambient brightness detection port is connected with described ambient brightness testing circuit;
The self-checking port, the state of automatic diagnosis processor internal processes and peripheral circuit;
Port is set in the zone, is connected with described regional initialization circuit;
The time set port is set the real-time time of perpetual calendar or the real-time time of hour totalizer;
Output shows the connectivity port, shows the real-time time of perpetual calendar or hour totalizer.
5. processor as claimed in claim 4, it is characterized in that, the processor internal preset has the time difference data group in different longitudes and different latitude zone surely, processor inside also presets and annual is short to the longest length time-variable data group at night of time at night most from the time at night, processor inside also presets different periods during turning on light night every day the data set of different brightness, and described processor is according to the data set control LED street lamp ON/OFF lamp time every night of above-mentioned setting, the length of lighting time every night, there are different brightness the different periods during turning on light every night.
6. processor as claimed in claim 4, it is characterized in that, processor is according to the lighting time of the real-time time information correspondence of time difference data group, night length time-variable data group, perpetual calendar or accumulative total timing, and ambient brightness detection signal and supply voltage zero cross signal, opens the LED street lamp;
Described processor is at the initial instant of opening the LED street lamp, the control electronic pressure controller is opened with low-angle the opening angle of each half cycle of supply voltage, and strengthen the opening angle of electronic pressure controller at short notice gradually, until being stabilized on the needed constant current value of LED street lamp;
Described supply voltage zero cross signal is the necessary condition of opening the LED street lamp, turn on light signal and lighting time signal of ambient brightness is two alternative conditions, when opening the LED street lamp, turn on light signal and lighting time signal of ambient brightness possesses one of them condition, described processor is just controlled the LED street lamp to light less than full power, when both conditions all possessed, described processor was just controlled the LED street lamp and is lighted with full power.
7. processor as claimed in claim 4 is characterized in that, the processor internal preset have surely turn on light every day during time period of different wagon flows, the stream of people data set of different brightness is arranged, the data set of these different brightness is to there being different reference voltage values;
The voltage signal sending processor that the LED street lamp drive current that extracts with the electric current sampling method converts to, the reference voltage value data set corresponding with described different brightness of different periods compares, calculating and intellectual analysis are handled, in real time and the Synchronization Control electronic pressure controller to the opening angle of each half cycle of supply voltage, the dynamic stability electronic pressure controller has different output voltage values in the difference periods;
Night every day controlled the LED street lamp by described processor has different brightness in the different periods, be transformed into the process of low-light level from high brightness, or be transformed into the process of high brightness from low-light level, adopt slow continually varying method to change, or the method that adopts staged to increase step by step/subtract changes, or adopts and slowly change continuously and the method for two kinds of mixing that staged increases step by step/subtracts is changed.
8. processor as claimed in claim 4, it is characterized in that, the new reference voltage value that described processor is regulated brightness is during less than before reference voltage value, or when detecting the current sampling magnitude of voltage greater than real-time reference voltage value, reduce the opening angle of electronic pressure controller fast, allow in the accuracy rating until being stabilized in reference voltage value to each half cycle of supply voltage;
The new reference voltage value that described processor is regulated brightness is during greater than before reference voltage value, or when detecting the drive current sampling voltage value less than real-time reference voltage value, slowly strengthen the opening angle of electronic pressure controller to each half cycle of supply voltage, until dynamic stability in reference voltage value allows accuracy rating.
9. processor as claimed in claim 4, it is characterized in that, described intelligent apparatus the sampling voltage value that overcurrent, overvoltage or output short-circuit cause current sampling circuit occurs and increases rapidly, and during greater than the highest reference voltage value that presets, processor can reduce the opening angle of electronic pressure controller to each half cycle of supply voltage rapidly, still be higher than the highest reference voltage value that presets if reduce the back sampling voltage value repeatedly, close LED street lamp drive current.
10. processor as claimed in claim 4 is characterized in that, when described zero cross detection circuit detects less than the supply voltage zero cross signal, closes the LED street lamp immediately;
Described processor closes modulating signal according to the real-time time of the fixed regional time difference data group of internal preset, night length time-variable data group and perpetual calendar or accumulative total timing pairing turn off the light time and ambient brightness to be determined to turn off the light;
When the time of turning off the light and ambient brightness close modulating signal when possessing one of them condition, processor is controlled described electronic pressure controller small-power and is lighted the LED street lamp, and both conditions all possess when turning off the light, and processor cuts out the LED street lamp immediately.
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| CN2010101812681A CN102256407A (en) | 2010-05-21 | 2010-05-21 | Intelligent device and method for driving LED street lamps at constant current by directly utilizing commercial power |
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| CN2010101812681A CN102256407A (en) | 2010-05-21 | 2010-05-21 | Intelligent device and method for driving LED street lamps at constant current by directly utilizing commercial power |
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Application publication date: 20111123 |