CN107155239A - A kind of method and apparatus for adjusting solar street light lighting power - Google Patents

Abstract

The embodiment of the invention discloses a method and a device for adjusting the lighting power of a solar street lamp. By acquiring the voltage value of a photovoltaic module, it is judged whether the voltage value is lower than a preset LED turn-on voltage value. When the voltage value is lower than the preset LED turn-on voltage value, it means that the photovoltaic module has completed the work of charging the battery, and at this time, the LED light can be turned on according to the preset power. When the preset time is reached, that is, the battery voltage tends to be stable at this time, the voltage value of the battery can be obtained at this time, and the working mode of the LED light can be adjusted according to the voltage value and the pre-stored working mode list; The working mode includes the lighting duration of the LED lamp and the corresponding lighting power. It can be seen that according to the voltage value of the battery, the intelligent control of the power supply of the battery to the LED lamp can realize adaptive adjustment of the lighting power of the LED lamp, and greatly extend the working time of the lighting system in bad weather such as rainy fog and haze.

Description

A method and device for adjusting the lighting power of solar street lamps

technical field

The invention relates to the technical field of solar energy, in particular to a method and a device for adjusting the lighting power of a solar street lamp.

Background technique

Energy is the cornerstone of the existence and development of modern society. With the continuous development of the global economy and society, energy consumption also continues to grow accordingly. As time goes by, the scarcity of fossil energy becomes more and more prominent, and this scarcity is gradually reflected in the price of energy commodities. In the context of the increasingly tense supply of fossil energy, the large-scale development and utilization of renewable energy has become an important part of the energy strategy of various countries in the future.

Solar energy is an inexhaustible, clean, pollution-free and renewable green energy source. The use of solar power, unparalleled cleanliness, high security, relative breadth and sufficiency of energy, long life, and maintenance-free and other advantages that other conventional energy sources do not have, photovoltaic energy is considered to be the 21st century The most important new energy. Photovoltaic LED lighting system has independent photovoltaic modules, batteries and LED lights. This system is widely used in suburbs and rural roads without power supply facilities.

In the traditional way, solar street lights often work according to the established mode, and it is impossible to intelligently adjust the power supply to LED lights according to the actual storage capacity of the battery. Especially in bad weather such as continuous rain, smog, etc., the photovoltaic array cannot generate electricity normally. If the lighting power of the LED lights is not adjusted in time, the LED lights will run out of battery power within a short period of time, causing power outages throughout the road.

It can be seen that how to intelligently adjust the lighting power of solar street lamps is an urgent problem to be solved by those skilled in the art.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a method and device for adjusting the lighting power of a solar street lamp, which can intelligently adjust the lighting power of a solar street lamp.

In order to solve the above technical problems, an embodiment of the present invention provides a method for adjusting the lighting power of solar street lamps, including:

Obtain the voltage value of the photovoltaic module;

judging whether the voltage value is lower than a preset LED turn-on voltage value;

If so, turn on the LED light according to the preset power, and obtain the voltage value of the battery when the preset time is reached;

Adjust the working mode of the LED lamp according to the voltage value and the pre-stored working mode list; the working mode includes the lighting duration and corresponding lighting power of the LED lamp.

Optionally, the adjusting the working mode of the LED lamp according to the voltage value and the pre-stored working mode list includes:

determining the threshold range to which the voltage value belongs; the threshold range is divided according to the initial voltage value;

Calculate the label value corresponding to the threshold range according to the calculation rule corresponding to the threshold range;

Find the working mode corresponding to the label value from the pre-stored working mode list, and use the working mode as the working mode of the LED lamp; and store the voltage value as the initial voltage value in the EPROM.

Optionally, also include:

judging whether the label value of the working mode is greater than a preset threshold;

If so, it is judged whether the number value of the LED light satisfies the preset condition;

When the preset condition is not satisfied, the storage battery is controlled to stop supplying power to the LED lamp.

Optionally, also include:

Detect the voltage value of the photovoltaic module;

When the voltage value is greater than the preset LED off voltage value, the battery is controlled to stop supplying power to the LED lamp.

Optionally, also include:

Receive the LED turn-on voltage value and LED turn-off voltage value sent by the host computer.

The embodiment of the present invention also provides a device for adjusting the lighting power of solar street lamps, including an acquisition unit, a judgment unit, an opening unit and an adjustment unit,

The obtaining unit is used to obtain the voltage value of the photovoltaic module;

The judging unit is used to judge whether the voltage value is lower than a preset LED turn-on voltage value;

If so, trigger the opening unit, the opening unit is used to turn on the LED light according to the preset power, and when the preset time is reached, the acquisition unit is also used to acquire the voltage value of the storage battery;

The adjusting unit is configured to adjust the working mode of the LED lamp according to the voltage value and the pre-stored working mode list; the working mode includes the lighting duration of the LED lamp and the corresponding lighting power.

Optionally, the adjustment unit includes a determination subunit, a calculation subunit and a search subunit,

The determining subunit is configured to determine the threshold range to which the voltage value belongs; the threshold range is divided according to the initial voltage value;

The calculation subunit is used to calculate the label value corresponding to the threshold range according to the calculation rule corresponding to the threshold range;

The searching subunit is used to search the working mode corresponding to the label value from the pre-stored working mode list, and use the working mode as the working mode of the LED lamp; and use the voltage value as the initial Voltage value, stored in EPROM.

Optionally, also includes control unit,

The judging unit is also used to judge whether the label value of the working mode is greater than a preset threshold, and if so, the judging unit is also used to judge whether the serial number of the LED lamp satisfies a preset condition;

When the preset condition is not satisfied, the control unit is triggered, and the control unit is used to control the storage battery to stop supplying power to the LED lamp.

Optionally, a detection unit is also included,

The detection unit is used to detect the voltage value of the photovoltaic module; when the voltage value is greater than the preset LED off voltage value, the control unit is triggered, and the control unit is also used to control the storage battery to stop charging to the LED lights powered.

Optionally, a receiving unit is also included,

The receiving unit is used for receiving the LED turn-on voltage value and the LED turn-off voltage value sent by the host computer.

It can be seen from the above technical solution that by obtaining the voltage value of the photovoltaic module, it is judged whether the voltage value is lower than the preset LED turn-on voltage value. When the voltage value is lower than the preset LED turn-on voltage value, it means that the photovoltaic module has completed the work of charging the battery, and at this time, the LED light can be turned on according to the preset power. When the preset time is reached, that is, the battery voltage tends to be stable at this time, the voltage value of the battery can be obtained at this time, and the working mode of the LED light can be adjusted according to the voltage value and the pre-stored working mode list; The working mode includes the lighting duration and corresponding lighting power of the LED lamp. It can be seen that according to the voltage value of the battery, the intelligent control of the power supply of the battery to the LED lamp can realize adaptive adjustment of the lighting power of the LED lamp, and greatly extend the working time of the lighting system in bad weather such as rainy fog and haze.

Description of drawings

In order to illustrate the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. As far as people are concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is a schematic diagram of the hardware structure of a solar street lamp provided by an embodiment of the present invention;

Fig. 2 is a flow chart of a method for adjusting the lighting power of a solar street lamp provided by an embodiment of the present invention;

3 is a schematic diagram of the distribution of lighting duration and lighting power of an LED lamp in a lighting cycle in a working mode provided by an embodiment of the present invention;

Fig. 4a is a schematic diagram of the lighting distribution of LED lights on a road when the lighting is sufficient provided by the embodiment of the present invention;

Fig. 4b is a schematic diagram of the lighting distribution of LED lights on a road on an odd-numbered day in an energy-saving mode provided by an embodiment of the present invention;

Fig. 4c is a schematic diagram of the lighting distribution of LED lights on a road on an even-numbered day in an energy-saving mode provided by an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a device for adjusting the lighting power of a solar street lamp provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

In the context of the increasingly tense supply of fossil energy, the large-scale development and utilization of renewable energy has become an important part of the energy strategy of various countries in the future. Taking solar energy as an example, the application of solar street lights is becoming more and more common. In the traditional way, solar street lights often perform lighting work according to the set working frequency and working hours, and it is impossible to adjust the power supply of the battery to the LED lights according to the actual situation.

To this end, the embodiment of the present invention provides a method and device for adjusting the lighting power of solar street lamps. By detecting the voltage value of the photovoltaic module, the LED lamp can be intelligently controlled to turn on and off, and according to the voltage value of the battery, reasonable Set the lighting time and lighting power of the LED lights. For example, in continuous rainy weather, the power generation of photovoltaic modules is reduced or even zero, which leads to a decrease in battery charge, and the battery consumes power continuously when supplying power to LED lights, so that the voltage value of the battery will continue to decrease. The power set in the traditional way supplies power to the LED lights, and the battery power is easily exhausted in a relatively short period of time. In the embodiment of the present invention, by reasonably adjusting the lighting time of the LED lamp and the power supply power of the battery to the LED lamp according to the voltage value of the battery, the lighting days of the solar street lamp in rainy weather can be greatly extended, and the lighting time of the battery can also be reduced. wear and prolong battery life.

The technical solutions of the embodiments of the present invention can be realized based on the hardware structure of the solar street lamp system shown in FIG. 1 . Figure 1 is a schematic diagram of the hardware structure of a solar street light. The solar street light includes photovoltaic modules, controllers, batteries and LED lights. Among them, the LED light can be composed of multiple light-emitting diodes, and the controller includes MCU and constant current. The module analyzes the voltage values of photovoltaic modules and batteries through the MCU, and reasonably selects the lighting time and lighting power of the LED lights. Specifically, the constant current module can adjust the battery by sending PWM current adjustment instructions to the constant current module through the MCU. The power supply current to the LED lamp, so as to realize the change of the lighting power of the LED lamp.

Next, a method for adjusting the lighting power of a solar street lamp provided by an embodiment of the present invention is described in detail. Fig. 2 is a flow chart of a method for adjusting the lighting power of a solar street lamp provided by an embodiment of the present invention, the method comprising:

S201: Obtain the voltage value of the photovoltaic module.

Photovoltaic modules are used to obtain solar energy to charge the battery. When the sky becomes dark, the solar energy obtained by photovoltaic modules decreases, and the corresponding voltage value will drop. In the embodiment of the present invention, the voltage value of the photovoltaic module can be used as the basis for whether to turn on the LED light.

In the embodiment of the present invention, the MCU in the controller can obtain the voltage value of the photovoltaic module through A/D sampling.

S202: Determine whether the voltage value is lower than a preset LED turn-on voltage value.

The LED turn-on voltage value may be a critical value for turning on the LED light, and in the embodiment of the present invention, the LED turn-on voltage value may be preset in the MCU. Wherein, the specific value of the LED turn-on voltage value can be set according to the actual situation.

When the voltage value of the photovoltaic module is lower than the LED turn-on voltage value, it means that the sky has become dark at this time, and the operation of turning on the LED light needs to be performed, that is, enter S203.

S203: Turn on the LED light according to the preset power, and acquire the voltage value of the storage battery when the preset time is reached.

Turning on the LED light also means that the battery starts to supply power to the LED light. The preset power may be the initial power for the battery to supply power to the LED lamp, and the value of the preset power may be preset in the MCU. In the initial stage of power supply, the voltage value of the battery is unstable. In order to avoid falsely high battery voltage, the voltage value of the battery can be obtained after the battery voltage becomes stable.

The preset time may be the waiting time from turning on the LED light to collecting the voltage value of the storage battery. The length of the preset time may be determined according to the performance of the storage battery. For example, the preset time may be set to 10 minutes. The timing starts when the LED light is turned on, and when the preset time is reached, the voltage value of the battery is obtained through A/D sampling.

S204: Adjust the working mode of the LED lamp according to the voltage value and the pre-stored working mode list.

Combined with the performance of solar street lights, weather factors, etc., several working modes of solar street lights can be preset. Each working mode includes the corresponding lighting time and lighting power of LED lights. These several working modes have the same lighting cycle, and the time divisions of the lighting cycle may be different, and the total power consumed by these several working modes in one lighting cycle may be in a decreasing form.

In a specific implementation, the pre-stored working modes can be labeled, and each working mode has a corresponding label value. For example, to set 10 working modes, the label values can be set to 1-10 in sequence.

As shown in Table 1, 10 different working modes are set (N=10):

N = 10 S = 5 N _S = 7

Table 1

In Table 1, m represents the label value of the working mode, P ₀ represents the preset power, P _i ^m represents the lighting segment power, τ _i ^m represents the lighting segment duration, and the unit of τ _i ^m is hour, where i=1, 2, 3, 4 or 5, N _S represents the threshold value for entering the energy-saving mode. The total lighting duration in one lighting cycle is The total power consumed in one lighting cycle is One lighting cycle in Table 1 is divided into 5 periods, so S=5.

Based on the fact that the total power consumed by several working modes can be in a decreasing form, when these working modes are labeled sequentially, the larger the label value, the smaller the corresponding total power consumption. In the MCU, the working mode corresponding to the minimum label value can be set in advance as the default working mode of the LED light.

In the embodiment of the present invention, the working mode of the LED lamp can be adjusted according to the voltage value of the storage battery. Specifically, the threshold range to which the voltage value belongs can be determined first, and then the label value corresponding to the threshold range can be calculated according to the calculation rules corresponding to the threshold range; The working mode corresponding to the label value is used as the working mode of the LED lamp; and the voltage value is stored in the EPROM as the initial voltage value.

Wherein, the threshold range can be divided according to the initial voltage value. The initial voltage value may be the voltage value of the storage battery obtained the previous day, and in the initial state, that is, when there is no voltage value of the storage battery of the previous day, the initial voltage value may be set to zero by default.

It should be noted that when obtaining the voltage value of the battery, in order to improve the accuracy of obtaining the voltage value, the voltage value of the battery should be obtained after the LED light is turned on and the voltage value tends to be stable.

For example, the voltage value V _b,k of the battery is acquired, and the voltage value is compared with the battery voltage value V _b,k-1 of the previous day.

If V _b,k >V _b,k-1 , it means that the power generation of the day is greater than the lighting power consumption of the previous night;

If V _b,k <V _b,k-1 , it means that the power generation of the day is less than the lighting power consumption of the previous night;

If V _b,k ≥V _max -n×1.4V, it means the battery is fully charged;

If V _b,k ≤V _min +n×0.7V, it means that the electric energy of the storage battery is insufficient.

Therefore, the label value m _k corresponding to the threshold range can be calculated according to the following calculation rules.

If V _b,k-1 ≤V _b,k ≤V _b,k-1 +0.3V, the lighting working mode remains unchanged, that is, m _k =m _k-1 ;

If V _max -n×1.4V>V _b,k >V _b,k-1 +0.3V and m _k-1 >1, it means that the battery power increases and the lighting power can be increased, that is, m _k ＝m _{k -1} -1;

If V _b,k ≥V _max -n×1.4V, it means that the battery is fully charged, and the lighting power can be set to the maximum, that is, m _k =1;

If V _min +n×0.7V<V _b,k <V _b,k-1 , it means that the electric energy of the storage battery is reduced, and the lighting power should be reduced, that is, m _k ＝m _k-1 +1;

If V _b,k ≤V _min +n×0.7V, it means that there is not much electric energy remaining in the storage battery, and the lighting power should be reduced to the minimum, that is, m _k =N.

Wherein, m _k-1 represents the working mode to which the LED light belongs the day before the working mode of the day is selected, and in the initial state, m _k-1 =1 by default. N represents the maximum label value of the working mode, for example, if there are 10 working modes, and the label values are 1-10 in turn, then N=10.

Taking one of the working modes in Table 1 as an example, for example, the working mode of the solar street light is the second one, that is, m _k =2, and the distribution diagram of the lighting duration and lighting power of the LED lamp according to this working mode is shown in FIG. 3 .

It can be seen from Figure 3 that the voltage value of the photovoltaic module is lower than the LED turn-on voltage value at time t _0. At this time, the MCU can control the battery to supply power to the LED lamp. When the preset time reaches 10 minutes, the battery voltage tends to be stable, and the MCU The voltage value of the battery can be obtained, and the working mode of the LED lamp can be determined according to the voltage value. The MCU can control the LED lamp to work according to the lighting time and lighting power corresponding to m _k = 2 in Table 1. When entering period 1, start Timing, and the MCU can send the corresponding PWM current adjustment command to the constant current module to change the power supply current of the battery to the LED light, so that the lighting power of the LED reaches 2/3P ₀ , and when it reaches 1 hour, enter period 2 and start again Timing, and the MCU can send the corresponding PWM current adjustment command to the constant current module to change the power supply current of the battery to the LED lamp, so that the lighting power of the LED reaches P ₀ , and when it reaches 4 hours, it enters period 3, according to this method And so on, so that the LED lamp can complete the lighting in one lighting cycle according to the second working mode.

It can be seen from the above technical solution that by obtaining the voltage value of the photovoltaic module, it is judged whether the voltage value is lower than the preset LED turn-on voltage value. When the voltage value is lower than the preset LED turn-on voltage value, it means that the photovoltaic module has completed the work of charging the battery, and at this time, the LED light can be turned on according to the preset power. When the preset time is reached, that is, the battery voltage tends to be stable at this time, the voltage value of the battery can be obtained at this time, and the working mode of the LED light can be adjusted according to the voltage value and the pre-stored working mode list; The working mode includes the lighting duration and corresponding lighting power of the LED lamp. It can be seen that according to the voltage value of the battery, the intelligent control of the power supply of the battery to the LED lamp can realize adaptive adjustment of the lighting power of the LED lamp, and greatly extend the working time of the lighting system in bad weather such as rainy fog and haze.

For rainy or smoggy weather, in order to further reduce the power consumption of the battery and prolong the lighting days of the solar street light, the energy-saving mode of the solar street light can be adopted.

From the above introduction, we can see that each working mode of solar street light has its corresponding label value, and the larger the label value, the smaller the power of the battery. In a specific implementation, it may be determined whether to enter the energy-saving mode based on the value of the label.

Specifically, it may be determined whether the label value of the working mode of the solar street lamp is greater than a preset threshold.

The preset threshold may be the threshold for the solar street lamp to enter the energy-saving mode. When the label value of the working mode is greater than the preset threshold, it can indicate that the capacity of the battery is already low at this time. In order to prolong the lighting days of the LED lamp, at this time, the solar street lamp can be set to the energy-saving mode.

Taking the solar street lamps included on a road as an example, when each solar street lamp enters an energy-saving mode, it is necessary to alternately illuminate the solar street lamps on the road. For example, solar street lights on a road can be divided into two categories. On the first day, the solar street lights belonging to the first category can be illuminated according to the selected working mode, and the solar street lights belonging to the second category are directly turned off. The solar street lights belonging to the second category can be illuminated according to the selected working mode, and the solar street lights belonging to the first category are directly turned off. Through the alternate lighting method, the lighting days of the solar street lights can be effectively extended.

Taking a solar street light as an example, it can be judged whether it is performing normal lighting or is directly turned off in a certain day. Specifically, it can be judged by judging whether the number value of the LED light satisfies the preset condition; When a preset condition is met, the storage battery is controlled to stop supplying power to the LED lamp.

In a specific implementation, the numbers can be set in sequence according to the installation positions of the solar street lamps. For example, if there are 14 solar street lamps installed on a road, they can be numbered as 1-14.

Although each solar street light is independent of each other, its internal clock information is relatively unified. Each solar street light can use the clock chip to obtain the current time, including year, month, day, hour, minute and other time information.

The preset condition can be set by the number value of the LED lamp and the date value of the day, for example, the preset condition can be to determine whether the number value and the date value are equal after taking the remainder of the same value.

When Rem(X,D)=Rem(R,D), the LED lamp works according to the selected working mode.

Wherein, X represents the number value of the LED light, R represents the date of the day, for example, the time obtained by using the clock chip is "June 1", then R=1. Rem(X,D) represents the remainder operation of X to D, Rem(R,D) represents the remainder operation of R to D, D is the scheduling coefficient, the larger D is, the more power is saved, but the lighting effect is also worse. Therefore, D usually takes a value of 2 or 3.

When Rem(X,D)≠Rem(R,D), turn off the LED light.

For example, Fig. 4a shows the lighting situation when the solar street lamps on a road are not in the energy-saving mode, and each solar street lamp provides lighting according to the selected working mode. When these solar street lamps enter the energy-saving mode, taking D=2 as an example, when R is an odd date, the corresponding solar street lamps with odd number values will be illuminated according to the selected working mode, while the solar street lamps with even number values will be in In the off state (lights off), the lighting situation is shown in Figure 4b; similarly, when R is an even date, the solar street lights with corresponding number values are illuminated according to the selected working mode, and the solar street lights with odd number values will be in the off state, and its lighting situation is shown in Figure 4c.

In different seasons, the sun rises and sets at different times. For example, in summer, the sun rises earlier and sets later. Correspondingly, the lighting time of solar street lights can be appropriately shortened. From the above introduction, it can be seen that the solar street light can work according to the selected working mode, and in this working mode, the lighting time has been set. However, for summer seasons with long sunshine hours, the lighting time of LED lights may not be over yet. At this time, the intensity of sunlight can meet the needs of users, that is, it is not necessary to use LED lights for lighting. When the time is not over, the LED light can be turned off in advance. The voltage value of the photovoltaic module has a correlation with the intensity of the sun's rays. Therefore, in this case, it can be judged whether the LED lamp can continue to illuminate according to the voltage value of the photovoltaic module.

Specifically, the voltage value of the photovoltaic module can be detected; when the voltage value is greater than the preset LED off voltage value, the battery is controlled to stop supplying power to the LED lamp.

The LED turn-off voltage value can be used to represent the critical value for turning off the LED light.

When the voltage value of the photovoltaic module is greater than the LED off voltage value, it means that the sunlight is strong enough at this time, and the LED lamp is no longer needed for lighting.

In a specific implementation, the MCU can send a corresponding PWM current adjustment command to the constant current module, so that the battery is disconnected from the LED light, that is, the power supply to the LED light is stopped, and the LED light is turned off.

By adjusting the lighting time of the LED light according to the voltage value of the photovoltaic module, the actual situation of sunlight can be fully considered, the lighting time of the LED light can be effectively controlled, the useless lighting of the LED light can be avoided, and it can effectively reduce the The consumption of batteries makes the lighting of solar street lights more intelligent and rational.

It can be seen from the above introduction that the LED turn-on voltage value and LED turn-off voltage value are important reference data for turning on and off the LED light. According to the system performance of the solar street light, the specific values of these two values can be adjusted.

In a specific implementation, the MCU may be connected to a host computer through an RS232 interface, wherein the host computer may be a computer. The user can input the specific values of the LED turn-on voltage value and the LED turn-off voltage value on the corresponding interface of the host computer, and the MCU can obtain the size of these two values according to the RS232 interface, and realize the adjustment of the two preset values.

Fig. 5 is a schematic structural diagram of a device for adjusting the lighting power of solar street lamps provided by an embodiment of the present invention, including an acquisition unit 51, a judgment unit 52, an opening unit 53 and an adjustment unit 54,

The acquiring unit 51 is configured to acquire the voltage value of the photovoltaic module.

The judging unit 52 is configured to judge whether the voltage value is lower than a preset LED turn-on voltage value.

If so, trigger the opening unit 53, the opening unit 53 is used to turn on the LED light according to the preset power, and when the preset time is reached, the acquisition unit is also used to acquire the voltage value of the storage battery.

The adjusting unit 54 is configured to adjust the working mode of the LED lamp according to the voltage value and the pre-stored working mode list; the working mode includes the lighting duration of the LED lamp and the corresponding lighting power.

Optionally, the adjustment unit includes a determination subunit, a calculation subunit and a search subunit,

The determining subunit is configured to determine the threshold range to which the voltage value belongs; the threshold range is divided according to the initial voltage value;

The calculation subunit is used to calculate the label value corresponding to the threshold range according to the calculation rule corresponding to the threshold range;

The searching subunit is used to search the working mode corresponding to the label value from the pre-stored working mode list, and use the working mode as the working mode of the LED lamp; and use the voltage value as the initial Voltage value, stored in EPROM.

Optionally, also includes control unit,

The judging unit is also used to judge whether the label value of the working mode is greater than a preset threshold, and if so, the judging unit is also used to judge whether the serial number of the LED lamp satisfies a preset condition;

When the preset condition is not satisfied, the control unit is triggered, and the control unit is used to control the storage battery to stop supplying power to the LED lamp.

Optionally, a detection unit is also included,

The detection unit is used to detect the voltage value of the photovoltaic module; when the voltage value is greater than the preset LED off voltage value, the control unit is triggered, and the control unit is also used to control the storage battery to stop charging to the LED lights powered.

Optionally, a receiving unit is also included,

The receiving unit is used for receiving the LED turn-on voltage value and the LED turn-off voltage value sent by the host computer.

For the description of the features in the embodiment corresponding to Figure N, refer to the relevant description of the embodiment corresponding to Figure N-1, and details will not be repeated here.

It can be seen from the above technical solution that by obtaining the voltage value of the photovoltaic module, it is judged whether the voltage value is lower than the preset LED turn-on voltage value. When the voltage value is lower than the preset LED turn-on voltage value, it means that the photovoltaic module has completed the work of charging the battery, and at this time, the LED light can be turned on according to the preset power. When the preset time is reached, that is, the battery voltage tends to be stable at this time, the voltage value of the battery can be obtained at this time, and the working mode of the LED light can be adjusted according to the voltage value and the pre-stored working mode list; The working mode includes the lighting duration and corresponding lighting power of the LED lamp. It can be seen that according to the voltage value of the battery, the intelligent control of the power supply of the battery to the LED lamp can realize adaptive adjustment of the lighting power of the LED lamp, and greatly extend the working time of the lighting system in bad weather such as rainy fog and haze.

The method and device for adjusting the lighting power of solar street lamps provided by the embodiments of the present invention are described above in detail. Each embodiment in the description is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Professionals can further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the possible For interchangeability, in the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

The steps of the methods or algorithms described in connection with the embodiments disclosed herein may be directly implemented by hardware, software modules executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other Any other known storage medium.

Claims (10)

1. A method for adjusting the lighting power of solar street lamps, comprising: Obtain the voltage value of the photovoltaic module; judging whether the voltage value is lower than a preset LED turn-on voltage value; If so, turn on the LED light according to the preset power, and obtain the voltage value of the battery when the preset time is reached; Adjust the working mode of the LED lamp according to the voltage value and the pre-stored working mode list; the working mode includes the lighting duration and corresponding lighting power of the LED lamp. 2. The method according to claim 1, wherein the adjusting the working mode of the LED lamp according to the voltage value and the pre-stored working mode list comprises: determining the threshold range to which the voltage value belongs; the threshold range is divided according to the initial voltage value; Calculate the label value corresponding to the threshold range according to the calculation rule corresponding to the threshold range; Find the working mode corresponding to the label value from the pre-stored working mode list, and use the working mode as the working mode of the LED lamp; and store the voltage value as the initial voltage value in the EPROM. 3. The method according to claim 2, further comprising: judging whether the label value of the working mode is greater than a preset threshold; If so, it is judged whether the number value of the LED light satisfies the preset condition; When the preset condition is not satisfied, the storage battery is controlled to stop supplying power to the LED lamp. 4. The method according to claim 3, further comprising: Detect the voltage value of the photovoltaic module; When the voltage value is greater than the preset LED off voltage value, the battery is controlled to stop supplying power to the LED lamp. 5. The method according to claim 4, further comprising: Receive the LED turn-on voltage value and LED turn-off voltage value sent by the host computer. 6. A device for adjusting the lighting power of solar street lamps, characterized in that it includes an acquisition unit, a judgment unit, an opening unit and an adjustment unit, The obtaining unit is used to obtain the voltage value of the photovoltaic module; The judging unit is used to judge whether the voltage value is lower than a preset LED turn-on voltage value; If so, trigger the opening unit, the opening unit is used to turn on the LED light according to the preset power, and when the preset time is reached, the acquisition unit is also used to acquire the voltage value of the storage battery; The adjusting unit is configured to adjust the working mode of the LED lamp according to the voltage value and the pre-stored working mode list; the working mode includes the lighting duration of the LED lamp and the corresponding lighting power. 7. The device according to claim 6, wherein the adjustment unit comprises a determination subunit, a calculation subunit and a search subunit, The determining subunit is configured to determine the threshold range to which the voltage value belongs; the threshold range is divided according to the initial voltage value; The calculation subunit is used to calculate the label value corresponding to the threshold range according to the calculation rule corresponding to the threshold range; The searching subunit is used to search the working mode corresponding to the label value from the pre-stored working mode list, and use the working mode as the working mode of the LED lamp; and use the voltage value as the initial Voltage value, stored in EPROM. 8. The device according to claim 7, further comprising a control unit, The judging unit is also used to judge whether the label value of the working mode is greater than a preset threshold, and if so, the judging unit is also used to judge whether the serial number of the LED lamp satisfies a preset condition; When the preset condition is not satisfied, the control unit is triggered, and the control unit is used to control the storage battery to stop supplying power to the LED lamp. 9. The device according to claim 8, further comprising a detection unit, The detection unit is used to detect the voltage value of the photovoltaic module; when the voltage value is greater than the preset LED off voltage value, the control unit is triggered, and the control unit is also used to control the storage battery to stop charging to the LED lights powered. 10. The device according to claim 9, further comprising a receiving unit, The receiving unit is used for receiving the LED turn-on voltage value and the LED turn-off voltage value sent by the host computer.