CN118574280A - Urban intelligent street lamp energy-saving control method and system based on LoRa technology - Google Patents
Urban intelligent street lamp energy-saving control method and system based on LoRa technology Download PDFInfo
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Abstract
The application relates to an energy-saving control method and system of an urban intelligent street lamp based on LoRa technology, wherein after the intelligent street lamp is started, an image picture of each intelligent street lamp area is obtained in real time and sent to a feature recognition model; the feature recognition model receives the image picture and judges whether a moving object exists in the current intelligent street lamp area or not; if no moving target exists in the preset time, identifying a target dimming parameter matched with the dimming of the preset street lamp in a database based on a preset dimming rule; if the target dimming parameter matched with the preset street lamp dimming is identified, acquiring a dimming execution instruction matched with the preset street lamp dimming; and sending the dimming execution instruction to the LoRa equipment terminal so that the LoRa equipment terminal adjusts the brightness output value of the intelligent street lamp corresponding to the intelligent street lamp area based on the dimming execution instruction. The intelligent street lamp dynamic adjustment system has the advantages that the intelligent street lamp dynamic adjustment is carried out in real time according to pedestrian conditions, and the best energy saving effect is ensured.
Description
Technical Field
The application relates to the technical field of street lamp control, in particular to an energy-saving control method and system for an urban intelligent street lamp based on a LoRa technology.
Background
In the urban intelligent street lamp energy-saving control system, the illumination control of the intelligent street lamp generally considers the factors such as the ambient illumination intensity, pedestrians and the like, for example, when the illumination intensity is low, the street lamp is started, and the illumination intensity of the street lamp can be properly reduced in places without pedestrians; but the illumination intensity is generally preset, the dynamic adjustment capability is poor, and especially in the area with large mobility of road pedestrians or large change of the environmental light intensity, the energy conservation of the intelligent street lamp can be improved by properly adjusting the illumination intensity.
Disclosure of Invention
In order to facilitate dynamic adjustment of the intelligent street lamp according to pedestrian movement and environmental changes and optimize the energy-saving effect of the street lamp, the application provides an urban intelligent street lamp energy-saving control method and system based on the LoRa technology.
The first object of the present application is achieved by the following technical solutions:
An energy-saving control method and system for urban intelligent street lamps based on LoRa technology comprises the following steps:
after the intelligent street lamp is started, acquiring image pictures of the intelligent street lamp areas in real time and sending the image pictures to the feature recognition model;
the feature recognition model receives the image picture and judges whether a moving object exists in the current intelligent street lamp area or not;
if no moving target exists in the preset time, identifying a target dimming parameter matched with the dimming of the preset street lamp in a database based on a preset dimming rule;
If the target dimming parameter matched with the preset street lamp dimming is identified, acquiring a dimming execution instruction matched with the preset street lamp dimming;
And sending the dimming execution instruction to the LoRa equipment terminal so that the LoRa equipment terminal adjusts the brightness output value of the intelligent street lamp corresponding to the intelligent street lamp area based on the dimming execution instruction.
Through adopting above-mentioned technical scheme, after the wisdom street lamp is opened, acquire the image picture of each place wisdom street lamp regional and send to the feature recognition model in real time, because can adjust the luminance when not having the pedestrian, therefore whether through judging current wisdom street lamp regional has the moving object, can obtain whether current wisdom street lamp regional can carry out luminance to wisdom street lamp and reduce, if all not have the moving object in the duration of predetermineeing, the target dimming parameter of the matching of adjusting luminance with predetermineeing the street lamp in the database is discerned based on the rule of predetermineeing, can acquire the dimming execution instruction of this predetermineeing street lamp dimming matching, send the control of adjusting luminance execution instruction to LoRa equipment terminal, can accomplish the control to the output luminance of street lamp, adopt this method can make wisdom street lamp carry out dynamic adjustment illumination intensity according to pedestrian's motion and promote wisdom street lamp's energy-conservation, thereby make wisdom street lamp carry out best energy-conserving mode.
The present application is in a preferred example: the step of judging whether a moving target exists in the current intelligent street lamp area comprises the following steps:
Judging whether pedestrians exist in the image pictures or not based on all the image pictures received by the feature recognition model;
if the pedestrian exists, judging whether the pedestrian has displacement or not according to the continuous frames of the image picture;
If yes, judging that a moving target exists in the current intelligent street lamp area;
When the moving object is identified within the preset time, the loRa equipment terminal controls the intelligent street lamp corresponding to the intelligent street lamp area to maintain or restore the preset brightness value, and when the fact that the moving object does not exist in the image picture is judged again, the preset time is reset.
Through adopting above-mentioned technical scheme, when intelligent street lamp is on, then through judging whether there is the pedestrian in the image picture, if there is the pedestrian to exist, then whether this pedestrian is in the displacement according to the continuous frame of image picture, if yes, then judge that current intelligent street lamp region exists the moving target, there is the pedestrian in a plurality of default duration, this intelligent street lamp then can maintain original luminance, or when there is not pedestrian in default duration to reduce intelligent street lamp's luminance, appear the pedestrian in the image picture and resume this intelligent street lamp luminance and then not have the moving target in the image picture, then reset default duration, realize energy-conserving control to intelligent street lamp.
The present application is in a preferred example: and after the step of sending the dimming execution instruction to the LoRa equipment terminal so that the LoRa equipment terminal adjusts the brightness output value of the intelligent street lamp corresponding to the intelligent street lamp area based on the dimming execution instruction, executing the following steps:
acquiring the total energy consumption of the intelligent street lamp in a preset period;
Comparing the total energy consumption with preset energy consumption;
when the total energy consumption is larger than the preset energy consumption interval, triggering an energy-saving strategy instruction to reduce the target dimming parameter of the current intelligent street lamp area.
Through adopting above-mentioned technical scheme, after the street lamp adjusts luminance, through obtaining the wisdom street lamp total energy consumption in the period of predetermineeing, compare total energy consumption with predetermineeing the energy consumption, can obtain whether the total energy consumption of wisdom street lamp in this wisdom street lamp regional is more than predetermineeing the energy consumption, when total energy consumption is greater than predetermineeing the energy consumption interval, then trigger energy-saving strategy instruction and adjust the regional target dimming parameter of current wisdom street lamp, thereby reduce the electric power of wisdom street lamp in this wisdom street lamp regional and obtain the most energy-saving strategy, make the energy-conserving effect of city wisdom street lamp reach the best state.
The present application is in a preferred example: when the total energy consumption is greater than the preset energy consumption interval, before the step of triggering the energy saving strategy to instruct to reduce the target dimming parameter of the current intelligent street lamp area, executing the following steps:
acquiring a brightness adjustment record in a preset period;
identifying the dimming frequency value of the intelligent street lamp in each intelligent street lamp area based on the brightness adjustment record;
comparing the dimming frequency value with a preset minimum dimming frequency value;
and when the dimming frequency value is smaller than the preset minimum dimming frequency value, the LoRa equipment terminal does not trigger the energy-saving strategy instruction.
By adopting the technical scheme, the dimming frequency value of the intelligent street lamp in each intelligent street lamp area can be obtained according to the brightness adjustment record in the preset period; since the brightness of pedestrians in the specific area can not be reduced, whether the current intelligent street lamp area is the specific area can be obtained by comparing the dimming frequency value with the preset minimum dimming frequency value, when the dimming frequency value is smaller than the preset minimum dimming frequency value, the intelligent street lamp area is the specific area, the LoRa equipment terminal does not trigger an energy-saving strategy instruction, personalized dimming is carried out according to the actual condition and the environment requirement of the street lamp, and the overall performance of the street lamp energy-saving control system is improved.
The present application is in a preferred example: the step of sending the dimming execution instruction to the LoRa equipment terminal so that the LoRa equipment terminal adjusts the output brightness value of the corresponding street lamp based on the dimming execution instruction comprises the following steps:
converting the dimming execution instruction into current information;
Controlling the luminous intensity of the street lamp according to the current information;
calculating a corresponding PWM duty ratio based on the luminous intensity of the street lamp;
Judging whether the PWM duty ratio exceeds the adjustable range of the preset PWM duty ratio, if so, acquiring a sawtooth wave PWM, and adjusting the sawtooth wave PWM to carry out amplitude limiting treatment on the PWM duty ratio;
The current information is adjusted based on the PWM duty ratio after the clipping process.
Through adopting above-mentioned technical scheme, with adjusting luminance execution instruction conversion into current information, through the electric current of adjustment flow through the street lamp, can control its luminous intensity, because the luminance of different periods of street lamp is different, consequently, can simulate different average currents through calculating corresponding PWM duty cycle, thereby control the luminance of street lamp, in order to guarantee the steady operation of street lamp and avoid damaging, whether need judge PWM duty cycle and surpass the adjustable scope of preset PWM duty cycle, if, then acquire sawtooth wave PWM, carry out the limiting process with PWM duty cycle according to adjustment sawtooth wave PWM, thereby carry out PWM duty cycle through adjustment sawtooth wave PWM, realize the dynamic adjustment to wisdom street lamp luminance, and reduce the scintillation phenomenon of wisdom street lamp, improve visual comfort, thereby reduce unnecessary energy consumption, reach energy-concerving and environment-protective purpose.
The present application is in a preferred example: the step of obtaining the sawtooth wave PWM and adjusting the sawtooth wave PWM to carry out amplitude limiting treatment on the PWM duty ratio comprises the following steps:
based on the sawtooth wave PWM signal, the period and the amplitude of the sawtooth wave PWM are obtained;
when the PWM duty ratio is higher than a preset PWM duty ratio adjustable range, the amplitude of the sawtooth wave PWM is reduced;
when the PWM duty ratio is lower than a preset PWM duty ratio adjustable range, the period of the sawtooth wave PWM is increased;
And performing amplitude limiting processing on the PWM duty ratio based on the amplitude and the period of the sawtooth wave PWM.
By adopting the technical scheme, the amplitude of the sawtooth wave PWM and the frequency of the sawtooth wave PWM are determined according to the sawtooth wave PWM signal, and the amplitude and the frequency of the sawtooth wave PWM are determined according to the peak voltage of the sawtooth wave PWM signal; when the PWM duty ratio is higher than a preset PWM duty ratio adjustable range, the amplitude of the sawtooth wave PWM is reduced, the reference voltage in the sawtooth wave generator circuit is changed, the PWM duty ratio can be reduced, when the PWM duty ratio is lower than the preset PWM duty ratio adjustable range, the period of the sawtooth wave PWM is increased, the clock frequency in the sawtooth wave generator circuit is changed to improve the PWM duty ratio, therefore, the amplitude limiting treatment is carried out on the PWM duty ratio according to the amplitude and the period of the sawtooth wave PWM, the PWM duty ratio is carried out by adjusting the sawtooth wave PWM, the dynamic adjustment of the brightness of the intelligent street lamp is realized, the flickering phenomenon of the intelligent street lamp is reduced, the visual comfort is improved, the unnecessary energy consumption is reduced, and the purposes of energy conservation and environmental protection are achieved.
The second object of the present application is achieved by the following technical solutions:
Urban intelligent street lamp energy-saving control system based on loRa technique includes:
the image acquisition module is used for acquiring image pictures of the intelligent street lamp areas in real time after the intelligent street lamps are started and sending the image pictures to the feature recognition model;
the target judging module is used for judging whether a moving target exists in the current intelligent street lamp area or not when the feature recognition model receives the image picture;
the dimming matching module is used for identifying a target dimming parameter matched with the dimming of the preset street lamp in the database based on a preset dimming rule if no moving target exists in the preset duration;
The instruction acquisition module is used for acquiring a dimming execution instruction matched with the preset street lamp dimming if the target dimming parameter matched with the preset street lamp dimming is identified;
And the instruction sending module is used for sending the dimming execution instruction to the LoRa equipment terminal so that the LoRa equipment terminal adjusts the brightness output value of the intelligent street lamp corresponding to the intelligent street lamp area based on the dimming execution instruction.
Through adopting above-mentioned technical scheme, after the wisdom street lamp is opened, acquire the image picture of each place wisdom street lamp regional and send to the feature recognition model in real time, because can adjust the luminance when not having the pedestrian, therefore whether through judging current wisdom street lamp regional has the moving object, can obtain whether current wisdom street lamp regional can carry out luminance to wisdom street lamp and reduce, if all not have the moving object in the duration of predetermineeing, the target dimming parameter of the matching of adjusting luminance with predetermineeing the street lamp in the database is discerned based on the rule of predetermineeing, can acquire the dimming execution instruction of this predetermineeing street lamp dimming matching, send the control of adjusting luminance execution instruction to LoRa equipment terminal, can accomplish the control to the output luminance of street lamp, adopt this method can make wisdom street lamp carry out dynamic adjustment illumination intensity according to pedestrian's motion and promote wisdom street lamp's energy-conservation, thereby make wisdom street lamp carry out best energy-conserving mode.
Optionally, the method further comprises:
the pedestrian judging module is used for judging whether pedestrians exist in the image pictures based on all the image pictures received by the feature recognition model;
the displacement judging module is used for judging whether the pedestrian is displaced or not according to the continuous frames of the image picture if the pedestrian is present;
the moving target module is used for judging that a moving target exists in the current intelligent street lamp area if the moving target exists in the current intelligent street lamp area;
And the reset duration module is used for controlling the intelligent street lamp corresponding to the intelligent street lamp area to maintain or restore the preset brightness value by the LoRa equipment terminal when the moving target is identified within the preset duration, and resetting the preset duration when the moving target is not determined to exist in the image picture again.
Through adopting above-mentioned technical scheme, when intelligent street lamp is on, then through judging whether there is the pedestrian in the image picture, if there is the pedestrian to exist, then whether this pedestrian is in the displacement according to the continuous frame of image picture, if yes, then judge that current intelligent street lamp region exists the moving target, there is the pedestrian in a plurality of default duration, this intelligent street lamp then can maintain original luminance, or when there is not pedestrian in default duration to reduce intelligent street lamp's luminance, appear the pedestrian in the image picture and resume this intelligent street lamp luminance and then not have the moving target in the image picture, then reset default duration, realize energy-conserving control to intelligent street lamp.
The third object of the present application is achieved by the following technical solutions:
A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the urban intelligent street lamp energy-saving control method based on the LoRa technology when the computer program is executed.
The fourth object of the present application is achieved by the following technical solutions:
A computer readable storage medium storing a computer program which when executed by a processor implements the steps of the urban intelligent street lamp energy saving control method based on the LoRa technology.
In summary, the present application includes at least one of the following beneficial technical effects:
1. After the intelligent street lamp is started, an image picture of each intelligent street lamp area is obtained in real time and sent to a feature recognition model, and as no pedestrian is present, the brightness can be reduced, so that whether the current intelligent street lamp area can reduce the brightness of the intelligent street lamp can be obtained by judging whether the current intelligent street lamp area has a moving target, if no moving target exists in the preset time, the target dimming parameters matched with the preset street lamp dimming in the database are recognized based on the preset dimming rule, the dimming execution instruction matched with the preset street lamp dimming can be obtained, the dimming execution instruction is sent to the LoRa equipment terminal, the control of the output brightness of the street lamp can be completed, and by adopting the method, the intelligent street lamp can dynamically adjust the illumination intensity according to the pedestrian movement so as to improve the energy conservation of the intelligent street lamp, and thus the intelligent street lamp can perform an optimal energy-saving mode;
2. When the intelligent street lamp is turned on, whether a pedestrian exists in an image picture or not is judged, if the pedestrian exists in the image picture, whether the pedestrian exists in the displacement or not can be judged according to continuous frames of the image picture, if the pedestrian exists in the current intelligent street lamp area, the moving object exists in the current intelligent street lamp area, the pedestrians exist in a plurality of preset time periods, the intelligent street lamp maintains original brightness, or when the pedestrians do not exist in the preset time periods to reduce the brightness of the intelligent street lamp, the brightness of the intelligent street lamp is recovered until the moving object does not exist in the image picture when the pedestrians exist in the image picture, and the preset time period is reset, so that the energy-saving control of the intelligent street lamp is realized;
3. After the brightness of the street lamp is regulated, comparing the total energy consumption with the preset energy consumption by acquiring the total energy consumption of the intelligent street lamp in a preset period, so as to obtain whether the total energy consumption of the intelligent street lamp in the intelligent street lamp area exceeds the preset energy consumption, and triggering an energy-saving strategy instruction to reduce the target dimming parameter of the current intelligent street lamp area when the total energy consumption is larger than the preset energy consumption interval, thereby reducing the electric power of the intelligent street lamp to obtain the most energy-saving strategy and enabling the energy-saving effect of the urban intelligent street lamp to reach the optimal state;
4. The dimming frequency value of the intelligent street lamp in each intelligent street lamp area can be obtained according to the brightness adjustment record in the preset period; since the brightness of pedestrians in the specific area can not be reduced, whether the current intelligent street lamp area is the specific area can be obtained by comparing the dimming frequency value with the preset minimum dimming frequency value, when the dimming frequency value is smaller than the preset minimum dimming frequency value, the intelligent street lamp area is the specific area, the LoRa equipment terminal does not trigger an energy-saving strategy instruction, personalized dimming is carried out according to the actual condition and the environment requirement of the street lamp, and the overall performance of the street lamp energy-saving control system is improved.
Drawings
FIG. 1 is a flow chart of an embodiment of an energy-saving control method for an urban intelligent street lamp based on LoRa technology;
FIG. 2 is a flowchart showing an implementation of step S20 in an embodiment of the energy-saving control method for the urban intelligent street lamp based on the LoRa technology of the present application;
FIG. 3 is a flowchart showing an implementation of the method for controlling energy conservation of urban intelligent street lamps according to the embodiment of the application after step S50;
FIG. 4 is a flowchart of an implementation of the method for controlling energy conservation of urban intelligent street lamps according to the embodiment of the present application before step S53;
FIG. 5 is a flowchart showing an implementation of step S50 in an embodiment of the energy-saving control method for the urban intelligent street lamp based on the LoRa technology of the present application;
FIG. 6 is a flowchart of an implementation of step S540 in an embodiment of a method for controlling energy conservation of an urban intelligent street lamp based on LoRa technology according to the present application;
Fig. 7 is a schematic block diagram of a computer device of the present application.
Detailed Description
The application is described in further detail below with reference to fig. 1-7.
In an embodiment, as shown in fig. 1, the application discloses an energy-saving control method for an urban intelligent street lamp based on a LoRa technology, which specifically comprises the following steps:
S10: after the intelligent street lamp is started, acquiring image pictures of the intelligent street lamp areas in real time and sending the image pictures to the feature recognition model;
In this embodiment, the image frame refers to a graphic frame collected by the camera in the area of each intelligent street lamp.
Specifically, after the intelligent street lamp is started, the image picture of each intelligent street lamp area is obtained in real time and sent to the feature recognition model.
S20: the feature recognition model receives the image picture and judges whether a moving object exists in the current intelligent street lamp area or not;
in this embodiment, the feature recognition model refers to a specific feature that recognizes the illumination intensity from the input data.
Specifically, when the feature recognition model receives the image picture, whether the current intelligent street lamp area has a moving target is judged, whether the brightness is to be increased or decreased can be obtained, so that the intelligent street lamp energy-saving control can be automatically adjusted according to the real-time environment and pedestrian conditions, and the aims of saving energy, protecting the road and improving the lighting efficiency are achieved.
S30: if no moving target exists in the preset time, identifying a target dimming parameter matched with the dimming of the preset street lamp in a database based on a preset dimming rule;
In this embodiment, the preset duration refers to user-defined setting by the administrator terminal; the preset dimming rule is a rule which is preset and used for adjusting the brightness of the street lamp; the target dimming parameter refers to a parameter for correspondingly adjusting the street lamp to a specific brightness.
Specifically, if no moving target exists in the preset duration, the target dimming parameters matched with the preset street lamp dimming in the database are identified according to the preset rule for adjusting the street lamp brightness, so that the dynamic matching of the dimming rule and the target dimming parameters can be realized, the street lamp energy-saving control system is ensured to be capable of automatically adjusting according to the real-time environment and pedestrian conditions, and the aims of saving energy, protecting the road and improving the lighting efficiency are realized.
S40: if the target dimming parameter matched with the preset street lamp dimming is identified, acquiring a dimming execution instruction matched with the preset street lamp dimming;
In this embodiment, the dimming execution instruction refers to an instruction for turning on a street lamp to adjust brightness, where the dimming execution instruction includes specific brightness setting, dimming time, and dimming mode.
Specifically, if a target dimming parameter matched with the preset street lamp dimming is identified, a corresponding dimming execution instruction is obtained according to the identified target dimming parameter, and the dimming execution instruction is sent to a corresponding street lamp through the LoRa equipment terminal to control the brightness output value of the street lamp.
S50: the dimming execution instruction is sent to the LoRa equipment terminal, so that the LoRa equipment terminal adjusts the brightness output value of the intelligent street lamp corresponding to the intelligent street lamp area based on the dimming execution instruction;
In this embodiment, the dimming execution instruction is sent to the LoRa equipment terminal, so that the dimming execution instruction adjusts the output brightness value of the corresponding street lamp through the LoRa equipment terminal, thereby realizing the function of receiving the signal in real time and automatically adjusting the brightness of the street lamp.
In one embodiment, referring to fig. 2, step S20 includes the steps of:
S210: judging whether pedestrians exist in the image pictures or not based on all the image pictures received by the feature recognition model;
S220: if the pedestrian exists, judging whether the pedestrian has displacement or not according to the continuous frames of the image picture;
s230: if yes, judging that a moving target exists in the current intelligent street lamp area;
S240: when the moving object is identified within the preset time, the loRa equipment terminal controls the intelligent street lamp corresponding to the intelligent street lamp area to maintain or restore the preset brightness value, and when the fact that the moving object does not exist in the image picture is judged again, the preset time is reset.
In this embodiment, by using all the image frames in the feature recognition model, it can be determined whether there is a pedestrian in the image frames, if the presence of a pedestrian is detected, the motion state of the pedestrian is further analyzed, the moving direction and speed of the pedestrian are monitored, and then whether the pedestrian has a displacement is determined according to the continuous frames of the image frames, when it can be obtained whether there is a moving object, if there is a pedestrian in the preset time period, the intelligent street lamp corresponding to the intelligent street lamp in the intelligent street lamp area maintains or recovers the preset brightness value, if there is no pedestrian in the preset time period, the preset time period is so as to determine whether there is a pedestrian moving object in the preset time period again, so as to provide the optimal energy-saving lighting effect.
In one embodiment, referring to fig. 3, after step S50, the following steps are performed:
s51: acquiring the total energy consumption of the intelligent street lamp in a preset period;
S52: comparing the total energy consumption with preset energy consumption;
s53: when the total energy consumption is larger than the preset energy consumption interval, triggering an energy-saving strategy instruction to reduce the target dimming parameter of the current intelligent street lamp area.
In this embodiment, the preset period is set by an administrator within a predicted preset period, and is usually one preset period in one day; the total energy consumption refers to the total energy consumption of electric energy consumed by the street lamp in a day period after dimming, and is used for reflecting the running state and the energy consumption condition of the intelligent street lamp; the preset energy consumption refers to energy consumption data of the street lamp set by an administrator in a normal day.
Specifically, the total energy consumption of the intelligent street lamp in one day is obtained, the total energy consumption is compared with the preset energy consumption, whether the total energy consumption of the intelligent street lamp exceeds the preset energy consumption or not can be obtained, when the total energy consumption is larger than the preset energy consumption interval, the energy-saving strategy command is triggered to reduce the target dimming parameter of the current intelligent street lamp area, the intelligent street lamp is reduced, the energy consumption is reduced, the automatic energy-saving control of the intelligent street lamp is realized, and the operation cost is reduced.
In one embodiment, referring to fig. 4, prior to step S53, the following steps are performed:
S531: acquiring a brightness adjustment record in a preset period;
s532: identifying the dimming frequency value of the intelligent street lamp in each intelligent street lamp area based on the brightness adjustment record;
s533: comparing the dimming frequency value with a preset minimum dimming frequency value;
S534: and when the dimming frequency value is smaller than the preset minimum dimming frequency value, the LoRa equipment terminal does not trigger the energy-saving strategy instruction.
In this embodiment, the brightness adjustment record should include detailed information such as dimming time, brightness values before and after dimming, and energy consumption; the dimming frequency value is defined as the number of brightness adjustments per unit time.
Specifically, historical data of brightness adjustment is collected from each intelligent street lamp or intelligent street lamp area through a LoRa equipment terminal in a preset period, the collected brightness adjustment records are analyzed, the dimming frequency of each intelligent street lamp area in the data collection period is calculated, and the dimming frequency value is compared with a preset minimum dimming frequency value; if the dimming frequency value is lower than the preset minimum dimming frequency value, the intelligent street lamp area is indicated to adjust the brightness rarely, so that the LoRa equipment terminal cannot execute the energy-saving strategy instruction on the area.
In one embodiment, referring to fig. 5, step S50 includes the steps of:
s510: converting the dimming execution instruction into current information;
s520: controlling the luminous intensity of the street lamp according to the current information;
s530: calculating a corresponding PWM duty ratio based on the luminous intensity of the street lamp;
S540: judging whether the PWM duty ratio exceeds the adjustable range of the preset PWM duty ratio, if so, acquiring a sawtooth wave PWM, and adjusting the sawtooth wave PWM to carry out amplitude limiting treatment on the PWM duty ratio;
S550: the current information is adjusted based on the PWM duty ratio after the clipping process.
In this embodiment, the PWM duty cycle is the ratio of the street lamp on time to one full PWM cycle time.
Specifically, the dimming execution instruction transmitted by the LoRa equipment terminal is converted into current information to control the current value of the street lamp driving circuit, so that the luminous intensity of the street lamp is controlled, the corresponding PWM duty ratio is calculated according to the luminous intensity of the street lamp, whether the PWM duty ratio exceeds the preset PWM duty ratio adjustable range is judged, if yes, the sawtooth wave PWM is obtained, the amplitude limiting treatment is carried out on the PWM duty ratio according to the adjustment of the sawtooth wave PWM, the PWM duty ratio is carried out through the adjustment of the sawtooth wave PWM, the dynamic adjustment of the brightness of the intelligent street lamp is realized, the flickering phenomenon of the intelligent street lamp is reduced, and the visual comfort is improved.
In one embodiment, referring to fig. 6, step S540 includes the steps of:
S541: based on the sawtooth wave PWM signal, the period and the amplitude of the sawtooth wave PWM are obtained;
S542: when the PWM duty ratio is higher than a preset PWM duty ratio adjustable range, the amplitude of the sawtooth wave PWM is reduced;
S543: when the PWM duty ratio is lower than a preset PWM duty ratio adjustable range, the period of the sawtooth wave PWM is increased;
S544: and performing amplitude limiting processing on the PWM duty ratio based on the amplitude and the period of the sawtooth wave PWM.
In this embodiment, the period value of the sawtooth wave PWM is a clock frequency determination among the frequencies of the sawtooth wave; the amplitude of the sawtooth wave PWM is determined by the peak voltage of the sawtooth wave.
Specifically, the period and the amplitude of the sawtooth wave PWM are obtained through the sawtooth wave PWM signal; when the PWM duty ratio is higher than a preset PWM duty ratio adjustable range, the amplitude of the sawtooth wave PWM is reduced, and the reference voltage in the sawtooth wave generator circuit is changed; when the PWM duty ratio is lower than the preset PWM duty ratio adjustable range, the period of the sawtooth wave PWM is increased, the clock frequency in the sawtooth wave generator circuit is changed, and the amplitude and the period of the sawtooth wave PWM are adjusted, so that the adjusted PWM duty ratio is ensured to be in the preset adjustable range.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present application.
In an embodiment, an energy-saving control system for urban intelligent street lamps based on the LoRa technology is provided, and the energy-saving control system for urban intelligent street lamps based on the LoRa technology corresponds to the energy-saving control method for urban intelligent street lamps based on the LoRa technology in the embodiment one by one. This city wisdom street lamp energy-saving control system based on loRa technique includes:
the image acquisition module is used for acquiring image pictures of the intelligent street lamp areas in real time after the intelligent street lamps are started and sending the image pictures to the feature recognition model;
the target judging module is used for judging whether a moving target exists in the current intelligent street lamp area or not when the feature recognition model receives the image picture;
the dimming matching module is used for identifying a target dimming parameter matched with the dimming of the preset street lamp in the database based on a preset dimming rule if no moving target exists in the preset duration;
The instruction acquisition module is used for acquiring a dimming execution instruction matched with the preset street lamp dimming if the target dimming parameter matched with the preset street lamp dimming is identified;
And the instruction sending module is used for sending the dimming execution instruction to the LoRa equipment terminal so that the LoRa equipment terminal adjusts the brightness output value of the intelligent street lamp corresponding to the intelligent street lamp area based on the dimming execution instruction.
Optionally, the method further comprises:
the pedestrian judging module is used for judging whether pedestrians exist in the image pictures based on all the image pictures received by the feature recognition model;
the displacement judging module is used for judging whether the pedestrian is displaced or not according to the continuous frames of the image picture if the pedestrian is present;
the moving target module is used for judging that a moving target exists in the current intelligent street lamp area if the moving target exists in the current intelligent street lamp area;
the reset duration module is used for controlling the intelligent street lamp corresponding to the intelligent street lamp area to maintain or restore the preset brightness value by the LoRa equipment terminal when the moving target is identified within the preset duration, and resetting the preset duration when the moving target is not determined to exist in the image picture again
Optionally, the method further comprises:
The energy consumption acquisition module is used for acquiring the total energy consumption of the intelligent street lamp in a preset period;
the energy consumption comparison module is used for comparing the total energy consumption with preset energy consumption;
And the energy consumption adjusting module is used for triggering the energy saving strategy to instruct to reduce the target dimming parameter of the current intelligent street lamp area when the total energy consumption is larger than the preset energy consumption interval.
Optionally, the method further comprises:
the record acquisition sub-module is used for acquiring a brightness adjustment record in a preset period;
the frequency value sub-module is used for identifying the dimming frequency value of the intelligent street lamp in each intelligent street lamp area based on the brightness adjustment record;
the frequency value comparison sub-module is used for comparing the dimming frequency value with a preset minimum dimming frequency value;
and the interruption energy-saving instruction submodule is used for not triggering an energy-saving strategy instruction by the LoRa equipment terminal when the dimming frequency value is smaller than a preset minimum dimming frequency value.
Optionally, the instruction sending module includes:
The instruction conversion sub-module is used for converting the dimming execution instruction into current information;
The current control sub-module is used for controlling the luminous intensity of the street lamp according to the current information;
The PWM calculation sub-module is used for calculating a corresponding PWM duty ratio based on the luminous intensity of the street lamp;
The PWM amplitude limiting sub-module is used for judging whether the PWM duty ratio exceeds the preset PWM duty ratio adjustable range, if so, obtaining a sawtooth wave PWM, and adjusting the sawtooth wave PWM to carry out amplitude limiting treatment on the PWM duty ratio;
and the current adjustment sub-module is used for adjusting the current information based on the PWM duty ratio after the amplitude limiting processing.
Optionally, the PWM clipping submodule includes:
the amplitude and period obtaining submodule is used for obtaining the period and amplitude of the sawtooth wave PWM based on the sawtooth wave PWM signal;
The amplitude adjustment sub-module is used for reducing the amplitude of the sawtooth wave PWM when the PWM duty ratio is higher than the preset PWM duty ratio adjustable range;
The period adjustment sub-module is used for increasing the period of the sawtooth wave PWM when the PWM duty ratio is lower than the preset PWM duty ratio adjustable range;
and the PWM amplitude limiting sub-module is used for carrying out amplitude limiting processing on the PWM duty ratio based on the amplitude and the period of the sawtooth wave PWM.
The detailed limitation of the energy-saving control system of the urban intelligent street lamp based on the LoRa technology can be referred to as the limitation of the energy-saving control method of the urban intelligent street lamp based on the LoRa technology, and the detailed description is omitted. All or part of each module in the urban intelligent street lamp energy-saving control system based on the LoRa technology can be realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 7. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used for storing the image picture, the illumination intensity data, the target dimming parameter, the lowest brightness value and the dimming rule. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by the processor to realize the urban intelligent street lamp energy-saving control method based on the LoRa technology.
In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing a LoRa technology-based urban intelligent street lamp energy saving control method when executing the computer program.
In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, which when executed by a processor implements a method for urban intelligent street lamp energy saving control based on LoRa technology.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (SYNCHLINK) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. The energy-saving control method for the urban intelligent street lamp based on the LoRa technology is characterized by comprising the following steps of:
after the intelligent street lamp is started, acquiring image pictures of the intelligent street lamp areas in real time and sending the image pictures to the feature recognition model;
the feature recognition model receives the image picture and judges whether a moving object exists in the current intelligent street lamp area or not;
if no moving target exists in the preset time, identifying a target dimming parameter matched with the dimming of the preset street lamp in a database based on a preset dimming rule;
If the target dimming parameter matched with the preset street lamp dimming is identified, acquiring a dimming execution instruction matched with the preset street lamp dimming;
And sending the dimming execution instruction to the LoRa equipment terminal so that the LoRa equipment terminal adjusts the brightness output value of the intelligent street lamp corresponding to the intelligent street lamp area based on the dimming execution instruction.
2. The urban intelligent street lamp energy-saving control method based on the LoRa technology according to claim 1, which is characterized in that: the step of judging whether a moving target exists in the current intelligent street lamp area comprises the following steps:
Judging whether pedestrians exist in the image pictures or not based on all the image pictures received by the feature recognition model;
if the pedestrian exists, judging whether the pedestrian has displacement or not according to the continuous frames of the image picture;
If yes, judging that a moving target exists in the current intelligent street lamp area;
When the moving object is identified within the preset time, the loRa equipment terminal controls the intelligent street lamp corresponding to the intelligent street lamp area to maintain or restore the preset brightness value, and when the fact that the moving object does not exist in the image picture is judged again, the preset time is reset.
3. The urban intelligent street lamp energy-saving control method based on the LoRa technology according to claim 1, which is characterized in that: and after the step of sending the dimming execution instruction to the LoRa equipment terminal so that the LoRa equipment terminal adjusts the brightness output value of the intelligent street lamp corresponding to the intelligent street lamp area based on the dimming execution instruction, executing the following steps:
acquiring the total energy consumption of the intelligent street lamp in a preset period;
Comparing the total energy consumption with preset energy consumption;
when the total energy consumption is larger than the preset energy consumption interval, triggering an energy-saving strategy instruction to reduce the target dimming parameter of the current intelligent street lamp area.
4. The urban intelligent street lamp energy-saving control method based on LoRa technology according to claim 3, wherein the method comprises the following steps: when the total energy consumption is greater than the preset energy consumption interval, before the step of triggering the energy saving strategy to instruct to reduce the target dimming parameter of the current intelligent street lamp area, executing the following steps:
acquiring a brightness adjustment record in a preset period;
identifying the dimming frequency value of the intelligent street lamp in each intelligent street lamp area based on the brightness adjustment record;
comparing the dimming frequency value with a preset minimum dimming frequency value;
and when the dimming frequency value is smaller than the preset minimum dimming frequency value, the LoRa equipment terminal does not trigger the energy-saving strategy instruction.
5. The urban intelligent street lamp energy-saving control method based on the LoRa technology according to claim 1, which is characterized in that: the step of sending the dimming execution instruction to the LoRa equipment terminal so that the LoRa equipment terminal adjusts the output brightness value of the corresponding street lamp based on the dimming execution instruction comprises the following steps:
converting the dimming execution instruction into current information;
Controlling the luminous intensity of the street lamp according to the current information;
calculating a corresponding PWM duty ratio based on the luminous intensity of the street lamp;
Judging whether the PWM duty ratio exceeds the adjustable range of the preset PWM duty ratio, if so, acquiring a sawtooth wave PWM, and adjusting the sawtooth wave PWM to carry out amplitude limiting treatment on the PWM duty ratio;
The current information is adjusted based on the PWM duty ratio after the clipping process.
6. The urban intelligent street lamp energy-saving control method based on the LoRa technology according to claim 5, wherein the method comprises the following steps: the step of obtaining the sawtooth wave PWM and adjusting the sawtooth wave PWM to carry out amplitude limiting treatment on the PWM duty ratio comprises the following steps:
based on the sawtooth wave PWM signal, the period and the amplitude of the sawtooth wave PWM are obtained;
when the PWM duty ratio is higher than a preset PWM duty ratio adjustable range, the amplitude of the sawtooth wave PWM is reduced;
when the PWM duty ratio is lower than a preset PWM duty ratio adjustable range, the period of the sawtooth wave PWM is increased;
And performing amplitude limiting processing on the PWM duty ratio based on the amplitude and the period of the sawtooth wave PWM.
7. Urban intelligent street lamp energy-saving control system based on loRa technique, its characterized in that includes:
the image acquisition module is used for acquiring image pictures of the intelligent street lamp areas in real time after the intelligent street lamps are started and sending the image pictures to the feature recognition model;
the target judging module is used for judging whether a moving target exists in the current intelligent street lamp area or not when the feature recognition model receives the image picture;
the dimming matching module is used for identifying a target dimming parameter matched with the dimming of the preset street lamp in the database based on a preset dimming rule if no moving target exists in the preset duration;
The instruction acquisition module is used for acquiring a dimming execution instruction matched with the preset street lamp dimming if the target dimming parameter matched with the preset street lamp dimming is identified;
And the instruction sending module is used for sending the dimming execution instruction to the LoRa equipment terminal so that the LoRa equipment terminal adjusts the brightness output value of the intelligent street lamp corresponding to the intelligent street lamp area based on the dimming execution instruction.
8. The LoRa technology-based urban intelligent street lamp energy-saving control system of claim 7, further comprising:
the pedestrian judging module is used for judging whether pedestrians exist in the image pictures based on all the image pictures received by the feature recognition model;
the displacement judging module is used for judging whether the pedestrian is displaced or not according to the continuous frames of the image picture if the pedestrian is present;
the moving target module is used for judging that a moving target exists in the current intelligent street lamp area if the moving target exists in the current intelligent street lamp area;
And the reset duration module is used for controlling the intelligent street lamp corresponding to the intelligent street lamp area to maintain or restore the preset brightness value by the LoRa equipment terminal when the moving target is identified within the preset duration, and resetting the preset duration when the moving target is not determined to exist in the image picture again.
9. Computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, realizes the steps of the urban intelligent street lamp energy saving control method based on the LoRa technology according to any one of claims 1 to 6.
10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the urban intelligent street lamp energy saving control method based on the LoRa technology according to any one of claims 1 to 6.
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