CN113260111B - Multifunctional monitoring method for street lamp system - Google Patents
Multifunctional monitoring method for street lamp system Download PDFInfo
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- CN113260111B CN113260111B CN202110622446.8A CN202110622446A CN113260111B CN 113260111 B CN113260111 B CN 113260111B CN 202110622446 A CN202110622446 A CN 202110622446A CN 113260111 B CN113260111 B CN 113260111B
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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]
- H05B45/30—Driver circuits
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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
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- H05B45/10—Controlling the intensity of the light
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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
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Abstract
The invention discloses a multifunctional monitoring method of a street lamp system, which comprises the following steps: detecting the power of the single lamp controller and the LED driving power supply when the single lamp controller and the LED driving power supply work simultaneously; detecting the power of the single lamp controller during working; detecting the power of the single lamp controller, the LED driving power supply and all the LED light sources when the LED driving power supply and all the LED light sources work at the maximum power; detecting the power corresponding to all dimming signal values; collecting power, voltage, current and leakage current of each LED light source; calculating average power, average voltage, average current and average leakage current; calculating a power accumulation change value; and respectively judging overvoltage, undervoltage, overcurrent, electric leakage, failure in normally turning off the lamp, driving power supply failure, open circuit or total failure of the LED light source, short circuit or open circuit of a dimming circuit and lamp flashing failure. The invention meets the fine judgment requirement of multiple faults of the street lamp system by detecting multiple parameters and combining the parameters for fault judgment, is beneficial to workers to know the fault condition more accurately, and achieves the aim of quick and accurate maintenance.
Description
Technical Field
The invention relates to a street lamp system monitoring method, in particular to a multifunctional monitoring method of a street lamp system.
Background
In order to meet the development requirements of smart cities, the street lamp plays an important role as a necessary matching device for the cities. The requirement of the existing street lamp system on fine management is higher and higher, for example, the requirement on energy conservation, monitoring and alarming is higher and higher.
With the development of LED technology, LED lighting fixtures have been widely used in the market. At present, the street lamp system with intelligent monitoring function generally adopts LED light sources, as shown in fig. 1, the dc power input end of one or more (forming a group or multiple groups) LED light sources (i.e. LED lamps) is connected with the dc power output end of the LED driving power supply, the output end of the LED driving power supply can automatically or manually control the on-off of the dc output power supply, the input ends of the LED driving power supply include two, one is an ac power input end, the other is a dimming signal input end, the two input ends of the LED driving power supply are respectively connected with the ac power output end and the dimming signal output end of the single lamp controller, and the ac power input end of the single lamp controller is connected with the ac mains supply. The single lamp controller comprises a main control MCU, a power supply module, a communication module, a metering module, an alternating current output module, a dimming output module and the like, is of a conventional circuit structure, can acquire the running state of a lamp, simultaneously detects the state of an input power supply, forms a fault detection result according to various states, uploads a cloud platform and realizes result display. Meanwhile, when a fault is monitored, the single lamp controller can cut off alternating current output, so that the effect of protecting a rear-stage circuit is achieved, and the fault surface is prevented from being enlarged.
In actual use, LED light sources can have various failures for various reasons, including: faults such as unlightness, slight lighting, flashing light and the like can seriously affect the life of people if the faults cannot be found and discharged in time.
At present, the fault detection of the traditional street lamp system with the intelligent monitoring function on the LED light source mainly comprises the detection of faults such as overvoltage, undervoltage and overcurrent, the fault analysis and judgment are not perfect, the problem that various faults can not be collected exists, meanwhile, a fault protection mechanism is lacked, and the damage of an LED driving power supply and/or the LED light source can be caused before the maintenance.
In addition, the conventional street lamp system cannot correct in real time during dimming, but due to various reasons such as changes of a power supply and a load, the fixed dimming method may cause a difference between an actual power percentage and a theoretical power percentage of dimming, for example, the theoretical dimming power percentage is 50%, but a result obtained in practical application may be 40% or 60%, which may cause an inaccurate dimming result.
Disclosure of Invention
The present invention is directed to solving the above problems and providing a multifunctional monitoring method for a street lamp system capable of detecting various faults.
The invention realizes the purpose through the following technical scheme:
a multifunctional monitoring method of a street lamp system is realized through the street lamp system, the street lamp system comprises a single lamp controller, an LED driving power supply and one or more LED light sources, the alternating current power supply input end of the single lamp controller is connected with a mains alternating current power supply, the alternating current power supply output end of the single lamp controller is connected with the alternating current power supply input end of the LED driving power supply, the dimming signal output end of the single lamp controller is connected with the dimming signal input end of the LED driving power supply, and the direct current power supply output end of the LED driving power supply is connected with the direct current power supply input end of the LED light sources; the multifunctional monitoring method of the street lamp system comprises the following steps:
step 1, outputting an alternating current power supply signal by a single lamp controller to enable all LED light sources to be lightened, outputting a maximum dimming signal value, disconnecting the LED driving power supply from the LED light sources, and recording power P0 at the moment, wherein P0 is the power when the single lamp controller and the LED driving power supply work simultaneously and all the LED light sources do not work;
step 2, the single lamp controller closes an alternating current power supply output signal, the LED driving power supply loses power at the moment, the power P1 at the moment is recorded, and the power P1 is the power when the single lamp controller works and the LED driving power supply and all LED light sources do not work;
step 3, connecting the LED driving power supply and the LED light sources, enabling all the LED light sources to be lightened by the alternating current power supply signal output by the single lamp controller, outputting the maximum dimming signal value, and recording the power P2 at the moment, wherein P2 is the power of the single lamp controller, the LED driving power supply and all the LED light sources working at the maximum power;
step 4, the single lamp controller sequentially reduces the dimming signal value according to a set proportion, namely, the dimming signal value is reduced from 100% to 0%, and records power Pm … Pn corresponding to the dimming signal value each time, wherein the power corresponding to all the dimming signal values comprises Pn … Pm which are arranged from small to large, Pn is the power corresponding to the dimming signal value of 0%, and Pm is the power corresponding to the dimming signal value of 100%;
step 5, the single lamp controller collects the power, voltage, current and leakage current of each LED light source in real time, the power, voltage, current and leakage current are collected once every X milliseconds, Y seconds are collected, and the number of collected data of each parameter is (1000/X) multiplied by Y;
step 6, removing the maximum value and the minimum value of (1000/X) multiplied by Y data, then calculating the average value of the data, and respectively obtaining average power P, average voltage E, average current I1 and average leakage current I2;
step 7, calculating the power cumulative change value S = abs (a) 1 -A 2 ） + abs （A 2 -A 3 ）+…+ abs （A （a-1） -A a ) Wherein abs represents the absolute value, A 1 、A 2 …A a Respectively represent power data acquired for the first time, power data acquired for the second time …, power data acquired for the a-th time, a = (1000/X) × Y;
step 8, comparing the current average voltage E with the set maximum value Emax and minimum value Emin of the voltage alarm threshold, if E is larger than or equal to Emax, judging the voltage fault and alarming, if E is smaller than or equal to Emin, judging the voltage fault and alarming, and if Emin is smaller than E and smaller than Emax, judging the voltage is normal;
step 9, comparing the current average current I1 with the set maximum value Imax of the current alarm threshold, if I1 is more than or equal to Imax, judging that the current is normal, and alarming if I1 is less than Emin;
step 10, comparing the current average leakage current I2 with a set leakage current alarm threshold Imax ', if I2 is more than or equal to Imax ', judging the current average leakage current as leakage fault and alarming, and if I2 is less than Emin ', judging the current average leakage current as no leakage;
step 11, when the output state of the alternating current power supply of the single lamp controller is off, comparing whether the current average current I1 is greater than 0, if I1 is greater than 0, judging that the single lamp controller cannot normally turn off the lamp, and sending an abnormal lamp turning-off alarm;
step 12, when the output state of the alternating current power supply of the single lamp controller is on, comparing the current average power P with P1, if P is not more than P1, judging that the LED driving power supply has a fault and giving an alarm, otherwise, entering the next step;
step 13, comparing the current average power P with P1 and P0, if P1 is less than or equal to P0, judging that the LED driving power supply is normal, and the LED light source is open or has all faults and gives an alarm, otherwise, entering the next step;
step 14, when the output state of the alternating current power supply of the single lamp controller is on and the current dimming signal value range is b% … c%, wherein b% is greater than 0% and c% is less than 100%, comparing the current average power P with Pn, if 0< P < (1% + 5%) x Pn, determining that the dimming circuit for generating the dimming signal in the single lamp controller has a short-circuit fault and gives an alarm, if P > (1-5%) x P2, determining that the dimming circuit for generating the dimming signal in the single lamp controller has an open-circuit fault and gives an alarm, otherwise, entering the next step;
step 15, comparing S with P2, if S is larger than or equal to dXP 2, wherein d is the power coefficient of the corresponding LED light source, judging the condition that the LED light source has a flashing light and giving an alarm;
and step 16, comparing the power P 'corresponding to the current dimming signal value with the power P, if the power P' is less than (1-5%) and the power P 'is less than or equal to (1 + 5%) and the power P', judging that the LED light source is normal, and otherwise, judging that the LED light source is in fault and giving an alarm.
Preferably, X in said step 5 is 20.
Preferably, b in step 14 is 20 and c is 80.
Preferably, the value range of d in step 15 is 1< d < 5.
Preferably, in order to protect the LED driving power supply and the LED light source, in steps 8 to 16, if the corresponding difference value is greater than the corresponding fault protection setting value when the corresponding fault occurs, the single lamp controller changes the output state of the ac power supply to off.
Further, the method for outputting the dimming signal by the single lamp controller comprises the following steps:
step one, a single lamp controller adjusts the percentage value of an output dimming signal to 100% according to preset time or after receiving a correction instruction, so that an LED light source is in a full-bright state;
delaying the time of integral multiple of 20ms, and continuously acquiring power values for N times at intervals of 20ms after power acquisition is stable;
step three: removing the highest value and the lowest value of the power values acquired for N times continuously, and calculating the average to obtain the maximum power value Pg of the LED light source;
step four: subtracting 1 from the dimming signal output value DOE of the single-lamp controller;
step five: delaying the integral multiple time of 20ms, and continuously acquiring power values for N times after the power acquisition is stable, wherein the interval of each time is 20 ms;
step six, removing the highest value and the lowest value of the power values acquired for N times continuously, and calculating the average to obtain the power value Pd of the LED light source corresponding to the current dimming signal;
step seven: repeating the fourth step and the sixth step, and sequentially collecting power values Pd _100 … Pd _0 of the LED light sources corresponding to all dimming signal output values;
step eight: if Pd _0 is not less than Pd _1 and not more than Pd _2 … is not less than Pd _100, the verification is error-free, the calibration state is exited, otherwise, the steps I to VII are repeated;
step nine: setting a required dimming signal output value as DIE, and calculating an actual dimming signal output value Pdi = Pg x (DIE/100) required to be acquired;
step ten: sequentially comparing the values of Pd _100 … Pd _0 and Pdi, and taking out the corresponding dimming signal output value Doe' when Pd _ x is less than or equal to Pdi, wherein x is any integer between 0 and 100; and finishing the dimming control output.
And determining N in the second step, the third step, the fifth step and the sixth step according to actual needs, wherein N is a positive integer.
The invention has the beneficial effects that:
the method and the device have the advantages that various parameters are detected and organically combined to be used for effectively judging various fault types of each device of the street lamp system, so that the fine judgment requirements of various faults of the street lamp system are met, and workers can know the specific conditions of the faults more accurately in real time, so that the purposes of quick and accurate maintenance are achieved; by turning off the output signal of the alternating current power supply to the LED driving power supply, the LED driving power supply and the LED light source can be protected in time, and larger loss is avoided; the aim of accurately outputting the dimming signal is achieved by correcting the dimming signal in real time, and the fact that the actual power percentage of dimming is the same as or the difference between the actual power percentage and the theoretical power percentage is extremely small is ensured.
Drawings
Fig. 1 is a circuit block diagram of the street lamp system according to the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, the multifunctional monitoring method of the street lamp system of the present invention is implemented by a street lamp system, the street lamp system includes a single lamp controller, an LED driving power supply and one or more LED light sources, an ac power supply input terminal of the single lamp controller is connected to a commercial ac power supply, an ac power supply output terminal of the single lamp controller is connected to an ac power supply input terminal of the LED driving power supply, a dimming signal output terminal of the single lamp controller is connected to a dimming signal input terminal of the LED driving power supply, a dc power supply output terminal of the LED driving power supply is connected to a dc power supply input terminal of the LED light source, and an output terminal of the LED driving power supply can automatically or manually control on/off of a dc output power supply; the multifunctional monitoring method of the street lamp system comprises the following steps:
step 1, outputting an alternating current power supply signal by a single lamp controller to enable all LED light sources to be lightened, outputting a maximum dimming signal value, disconnecting the LED driving power supply from the LED light sources, and recording power P0 at the moment, wherein P0 is the power when the single lamp controller and the LED driving power supply work simultaneously and all the LED light sources do not work;
step 2, the single lamp controller closes an alternating current power supply output signal, the LED driving power supply loses power at the moment, the power P1 at the moment is recorded, and P1 is the power when the single lamp controller works and the LED driving power supply and all LED light sources do not work;
step 3, connecting the LED driving power supply and the LED light sources, enabling all the LED light sources to be lightened by the alternating current power supply signal output by the single lamp controller, outputting the maximum dimming signal value, and recording the power P2 at the moment, wherein P2 is the power of the single lamp controller, the LED driving power supply and all the LED light sources working at the maximum power;
step 4, the single lamp controller sequentially reduces the dimming signal value according to a set proportion, namely, the dimming signal value is reduced from 100% to 0%, and records power Pm … Pn corresponding to the dimming signal value each time, wherein the power corresponding to all the dimming signal values comprises Pn … Pm which are arranged from small to large, Pn is the power corresponding to the dimming signal value of 0%, and Pm is the power corresponding to the dimming signal value of 100%;
step 5, the single lamp controller collects the power, voltage, current and leakage current of each LED light source in real time, the power, voltage, current and leakage current are collected once every 20 milliseconds, Y seconds are collected, the number of collected data of each parameter is 50 multiplied by Y, and Y is determined according to specific requirements;
step 6, removing the maximum value and the minimum value of the 50 multiplied by Y data, and then calculating the average value of the data to respectively obtain average power P, average voltage E, average current I1 and average leakage current I2;
step 7, calculating the power cumulative change value S = abs (a) 1 -A 2 ） + abs （A 2 -A 3 ）+…+ abs （A （a-1） -A a ) Wherein abs represents the absolute value of A 1 、A 2 …A a Respectively representing the power data acquired for the first time, the power data acquired for the second time …, the power data acquired for the a-th time, a =50 × Y;
step 8, comparing the current average voltage E with the set maximum value Emax and minimum value Emin of the voltage alarm threshold, if E is larger than or equal to Emax, judging the voltage fault and alarming, if E is smaller than or equal to Emin, judging the voltage fault and alarming, and if Emin is smaller than E and smaller than Emax, judging the voltage is normal; meanwhile, if the overvoltage or undervoltage difference value is larger than the corresponding voltage protection set value, the single lamp controller changes the output state of the alternating current power supply to be off;
step 9, comparing the current average current I1 with the set maximum value Imax of the current alarm threshold, if I1 is more than or equal to Imax, judging that the current is normal, and alarming if I1 is less than Emin; meanwhile, if the overcurrent difference value is larger than the corresponding current protection set value, the single lamp controller changes the output state of the alternating current power supply to be off;
step 10, comparing the current average leakage current I2 with a set leakage current alarm threshold Imax ', if I2 is more than or equal to Imax ', judging the current average leakage current as leakage fault and alarming, and if I2 is less than Emin ', judging the current average leakage current as no leakage; meanwhile, if the leakage current value is larger than the corresponding leakage current protection set value, the single lamp controller changes the output state of the alternating current power supply to be off;
step 11, when the output state of the alternating current power supply of the single lamp controller is off, comparing whether the current average current I1 is greater than 0, if I1 is greater than 0, judging that the single lamp controller cannot normally turn off the lamp, and sending an abnormal lamp turning-off alarm; meanwhile, the single lamp controller changes the output state of the alternating current power supply into off;
step 12, when the output state of the alternating current power supply of the single lamp controller is on, comparing the current average power P with P1, if P is less than or equal to P1, judging that the LED driving power supply has a fault and giving an alarm, and meanwhile, changing the output state of the alternating current power supply of the single lamp controller to be off; otherwise, entering the next step;
step 13, comparing the current average power P with P1 and P0, if P1 is less than or equal to P0, judging that the LED driving power supply is normal, and the LED light source is open or has all faults and gives an alarm, and meanwhile, the single-lamp controller changes the output state of the alternating current power supply to off; otherwise, entering the next step;
step 14, when the output state of the ac power supply of the single lamp controller is on and the current dimming signal value range is 20% … 80%, comparing the current average power P with Pn, if 0< P < (1% + 5%) x Pn, determining that the dimming circuit in the single lamp controller for generating the dimming signal has a short-circuit fault and gives an alarm, and if P > (1-5%) x P2, determining that the dimming circuit in the single lamp controller for generating the dimming signal has an open-circuit fault and gives an alarm, and at the same time, the single lamp controller changes the output state of the ac power supply to off; otherwise, entering the next step;
step 15, comparing S with P2, if S is more than or equal to dXP 2, wherein d is the power coefficient of the corresponding LED light source, and the value range of d is 1< d <5, judging the condition that the LED light source has a flashing light and giving an alarm; meanwhile, the single lamp controller changes the output state of the alternating current power supply into off;
and step 16, comparing the power P ' corresponding to the current dimming signal value with the power P, if the multiplied by P ' is less than (1-5%) and less than or equal to (1 + 5%) multiplied by P ', judging that the LED light source is normal, otherwise, judging that the LED light source is in fault and giving an alarm, and simultaneously, changing the output state of the alternating current power supply of the single lamp controller to be off.
The method for outputting the dimming signal by the single lamp controller comprises the following steps:
step one, a single lamp controller adjusts the percentage value of an output dimming signal to 100% according to preset time or after receiving a correction instruction, so that an LED light source is in a full-bright state;
delaying the time of integral multiple of 20ms, and continuously acquiring power values for N times at intervals of 20ms after power acquisition is stable;
step three: removing the highest value and the lowest value of the power values acquired for N times continuously, and calculating the average to obtain the maximum power value Pg of the LED light source;
step four: subtracting 1 from the dimming signal output value DOE of the single-lamp controller;
step five: delaying the integral multiple time of 20ms, and continuously acquiring power values for N times after the power acquisition is stable, wherein the interval of each time is 20 ms;
step six, removing the highest value and the lowest value of the power values acquired for N times continuously, and calculating the average to obtain the power value Pd of the LED light source corresponding to the current dimming signal;
step seven: repeating the fourth step and the sixth step, and sequentially collecting power values Pd _100 … Pd _0 of the LED light sources corresponding to all dimming signal output values;
step eight: if Pd _0 is not less than Pd _1 and not more than Pd _2 … is not less than Pd _100, the verification is error-free, the calibration state is exited, otherwise, the steps I to VII are repeated;
step nine: setting a required dimming signal output value as DIE, and calculating an actual dimming signal output value Pdi = Pg x (DIE/100) required to be acquired;
step ten: sequentially comparing the values of Pd _100 … Pd _0 and Pdi, and taking out the corresponding dimming signal output value Doe' when Pd _ x is less than or equal to Pdi, wherein x is any integer between 0 and 100; and finishing the dimming control output.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, and should be considered to fall within the protection scope of the patent claims of the present invention.
Claims (6)
1. A multifunctional monitoring method of a street lamp system is realized through the street lamp system, the street lamp system comprises a single lamp controller, an LED driving power supply and one or more LED light sources, the alternating current power supply input end of the single lamp controller is connected with a mains supply alternating current power supply, the alternating current power supply output end of the single lamp controller is connected with the alternating current power supply input end of the LED driving power supply, the dimming signal output end of the single lamp controller is connected with the dimming signal input end of the LED driving power supply, and the direct current power supply output end of the LED driving power supply is connected with the direct current power supply input end of the LED light sources; the method is characterized in that: the multifunctional monitoring method of the street lamp system comprises the following steps:
step 1, outputting an alternating current power supply signal by a single lamp controller to enable all LED light sources to be lightened, outputting a maximum dimming signal value, disconnecting the LED driving power supply from the LED light sources, and recording power P0 at the moment, wherein P0 is the power when the single lamp controller and the LED driving power supply work simultaneously and all the LED light sources do not work;
step 2, the single lamp controller closes an alternating current power supply output signal, the LED driving power supply loses power at the moment, the power P1 at the moment is recorded, and the power P1 is the power when the single lamp controller works and the LED driving power supply and all LED light sources do not work;
step 3, connecting the LED driving power supply and the LED light sources, enabling all the LED light sources to be lightened by the alternating current power supply signal output by the single lamp controller, outputting the maximum dimming signal value, and recording the power P2 at the moment, wherein P2 is the power of the single lamp controller, the LED driving power supply and all the LED light sources working at the maximum power;
step 4, the single lamp controller sequentially reduces the dimming signal value according to a set proportion, namely, the dimming signal value is reduced from 100% to 0%, and records power Pm … Pn corresponding to the dimming signal value each time, wherein the power corresponding to all the dimming signal values comprises Pn … Pm which are arranged from small to large, Pn is the power corresponding to the dimming signal value of 0%, and Pm is the power corresponding to the dimming signal value of 100%;
step 5, the single lamp controller collects the power, voltage, current and leakage current of each LED light source in real time, the power, voltage, current and leakage current are collected once every X milliseconds, Y seconds are collected, and the number of collected data of each parameter is (1000/X) multiplied by Y;
step 6, removing the maximum value and the minimum value of (1000/X) multiplied by Y data, then calculating the average value of the data, and respectively obtaining average power P, average voltage E, average current I1 and average leakage current I2;
step 7, calculating the power cumulative change value S = abs (a) 1 -A 2 ） + abs （A 2 -A 3 ）+…+ abs （A （a-1） -A a ) Wherein abs represents the absolute value of A 1 、A 2 …A a Respectively represent power data acquired for the first time, power data acquired for the second time …, power data acquired for the a-th time, a = (1000/X) × Y;
step 8, comparing the current average voltage E with the set maximum value Emax and minimum value Emin of the voltage alarm threshold, if E is larger than or equal to Emax, judging the voltage fault and alarming, if E is smaller than or equal to Emin, judging the voltage fault and alarming, and if Emin is smaller than E and smaller than Emax, judging the voltage is normal;
step 9, comparing the current average current I1 with the set maximum value Imax of the current alarm threshold, if I1 is more than or equal to Imax, judging that the current is normal, and alarming if I1 is less than Emin;
step 10, comparing the current average leakage current I2 with a set leakage current alarm threshold Imax ', if I2 is more than or equal to Imax ', judging the current average leakage current as leakage fault and alarming, and if I2 is less than Emin ', judging the current average leakage current as no leakage;
step 11, when the output state of the alternating current power supply of the single lamp controller is off, comparing whether the current average current I1 is greater than 0, if I1 is greater than 0, judging that the single lamp controller cannot normally turn off the lamp, and sending an abnormal alarm of turning off the lamp;
step 12, when the output state of the alternating current power supply of the single lamp controller is on, comparing the current average power P with P1, if P is not more than P1, judging that the LED driving power supply has a fault and giving an alarm, otherwise, entering the next step;
step 13, comparing the current average power P with P1 and P0, if P1 is less than or equal to P0, judging that the LED driving power supply is normal, and the LED light source is open or has all faults and gives an alarm, otherwise, entering the next step;
step 14, when the output state of the alternating current power supply of the single lamp controller is on and the current dimming signal value range is b% -c%, wherein b% is greater than 0% and c% is less than 100%, comparing the current average power P with Pn, if 0< P < (1% + 5%) x Pn, determining that the dimming circuit used for generating the dimming signal in the single lamp controller has a short-circuit fault and gives an alarm, if P > (1-5%) x P2, determining that the dimming circuit used for generating the dimming signal in the single lamp controller has an open-circuit fault and gives an alarm, otherwise, entering the next step;
step 15, comparing S with P2, if S is larger than or equal to dXP 2, wherein d is the power coefficient of the corresponding LED light source, judging the condition that the LED light source has a flashing light and giving an alarm;
and step 16, comparing the power P 'corresponding to the current dimming signal value with the power P, if the power P' is less than (1-5%) and the power P 'is less than or equal to (1 + 5%) and the power P', judging that the LED light source is normal, and otherwise, judging that the LED light source is in fault and giving an alarm.
2. The multifunctional monitoring method of a street lamp system according to claim 1, characterized in that: x in the step 5 is 20.
3. The multifunctional monitoring method of a street lamp system according to claim 1, characterized in that: in the step 14, b is 20, and c is 80.
4. The multifunctional monitoring method of the street lamp system according to claim 1, characterized in that: the value range of d in the step 15 is 1< d < 5.
5. The multifunctional monitoring method of the street lamp system according to claim 1, characterized in that: in the steps 8 to 16, if the corresponding difference value is greater than the corresponding fault protection set value when the corresponding fault occurs, the single lamp controller changes the output state of the alternating current power supply to off.
6. Multifunctional monitoring method of street lamp systems according to any of claims 1-5, characterized in that: the method for outputting the dimming signal by the single lamp controller comprises the following steps:
step one, a single lamp controller adjusts the percentage value of an output dimming signal to 100% according to preset time or after receiving a correction instruction, so that an LED light source is in a full-bright state;
delaying the time of integral multiple of 20ms, and continuously acquiring power values for N times at intervals of 20ms after power acquisition is stable;
step three: removing the highest value and the lowest value of the power values acquired continuously for N times, and calculating the average to obtain the maximum power value Pg of the LED light source;
step four: subtracting 1 from the dimming signal output value DOE of the single-lamp controller;
step five: delaying the integral multiple time of 20ms, and continuously acquiring power values for N times after the power acquisition is stable, wherein the interval of each time is 20 ms;
step six, removing the highest value and the lowest value of the power values acquired for N times continuously, and calculating the average to obtain the power value Pd of the LED light source corresponding to the current dimming signal;
step seven: repeating the fourth step and the sixth step, and sequentially collecting power values Pd _100 … Pd _0 of the LED light sources corresponding to all dimming signal output values;
step eight: if Pd _0 is not less than Pd _1 and not more than Pd _2 … is not less than Pd _100, the verification is error-free, the calibration state is exited, otherwise, the steps I to VII are repeated;
step nine: setting a required dimming signal output value as DIE, and calculating an actual dimming signal output value Pdi = Pg x (DIE/100) required to be acquired;
step ten: sequentially comparing the values of Pd _100 … Pd _0 and Pdi, and taking out the corresponding dimming signal output value Doe' when Pd _ x is less than or equal to Pdi, wherein x is any integer between 0 and 100; and finishing the dimming control output.
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