CN111465138A - Adaptive photovoltaic L ED tunnel enhancement lighting system and operation method thereof - Google Patents
Adaptive photovoltaic L ED tunnel enhancement lighting system and operation method thereof Download PDFInfo
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- CN111465138A CN111465138A CN202010289360.3A CN202010289360A CN111465138A CN 111465138 A CN111465138 A CN 111465138A CN 202010289360 A CN202010289360 A CN 202010289360A CN 111465138 A CN111465138 A CN 111465138A
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Abstract
The invention discloses an adaptive photovoltaic L ED tunnel reinforced lighting system and an operation method thereof, wherein the adaptive photovoltaic L ED tunnel reinforced lighting system comprises a power supply and a plurality of lamps, the power supply comprises a photovoltaic module, a dimming controller and a DC/DC power supply controller, each lamp comprises a power supply driver, a L ED light source and a single lamp controller, sunlight of the photovoltaic module is converted into electric energy, the electric energy is recorded and converted into electric signals at the same time, the photovoltaic module is respectively connected with the dimming controller and the DC/DC power supply controller, the electric energy is output outwards, the electric signals are output outwards through the dimming controller, the dimming controller is connected with each single lamp controller through a control line and transmits the electric signals to the single lamp controller, each single lamp controller controls the output power of the corresponding power supply driver according to the corresponding electric signals, and the power supply driver drives the corresponding L ED light source according to the output power.
Description
Technical Field
The invention relates to the technical field of tunnel lighting, in particular to an adaptive photovoltaic L ED tunnel enhancement lighting system and an operation method thereof.
Background
The existing tunnel entrance and exit reinforced illumination solution adopts commercial power illumination and a graded dimming or no dimming system, the dimming precision is low according to the natural illumination condition outside the tunnel, the tunnel entrance and exit reinforced illumination solution cannot well adapt to the different solar illumination intensities of the entrance at different time periods in the daytime, the sunlight causes the phenomena of 'black holes' and 'white holes' caused by overlarge luminance gradient of the entrance, and the driving comfort of vehicles passing through the tunnel is greatly influenced.
Moreover, with the rapid development of economy, the number and the mileage of the tunnels are continuously increased, and the problem of overlarge energy consumption of tunnel commercial power illumination is highlighted.
Therefore, how to eliminate the potential safety hazards of the tunnel 'black hole' and 'white hole' and simultaneously consider the problem of overlarge lighting energy consumption becomes a technical problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
In view of the above defects of the prior art, the invention provides an adaptive photovoltaic L ED tunnel enhanced lighting system and an operation method thereof, and aims to realize the tunnel enhanced lighting system which realizes that the brightness of the lighting lamps at the entrance and the exit of the tunnel synchronously changes along with the intensity of natural light outside the tunnel, solve the phenomena of 'black holes' and 'white holes' caused by overlarge gradient of the brightness of the entrance due to sunlight, realize the purposes of utilizing natural energy and saving electricity, and further build a comfortable tunnel driving environment.
In order to achieve the purpose, the invention discloses an adaptive photovoltaic L ED tunnel enhancement lighting system which comprises a power supply and a plurality of lamps arranged in the tunnel.
Each lamp comprises a power driver, an L ED light source and a single lamp controller;
the photovoltaic module is arranged outside the tunnel, converts sunlight outside the tunnel into electric energy, records the brightness of the sunlight and converts the brightness of the sunlight into an electric signal;
the photovoltaic module is respectively connected with the dimming controller and the DC/DC power controller, the electric energy is output outwards through the DC/DC power controller, and meanwhile, an electric signal corresponding to the intensity of the sunlight is output outwards through the dimming controller;
the DC/DC power supply controller is connected with the power supply driver of each lamp through a power line and supplies power to the power supply driver;
the dimming controller is connected with each single lamp controller through a control line and transmits the electric signals to the single lamp controllers;
each single lamp controller controls the output power of the corresponding power driver according to the corresponding electrical signal, and the power driver drives the L ED light source to emit light according to the output power.
Preferably, the DC/DC power supply controller is further provided with a clock module, the photovoltaic module is connected with the clock module, and the clock module adjusts the working time period of the DC/DC power supply controller according to the longitude and latitude and the season where the tunnel is located.
The invention also provides an operation method of the adaptive photovoltaic L ED tunnel enhancement lighting system, which comprises the following steps:
step 1, the photovoltaic module starts to work, the sunlight is converted into electric energy, and the brightness of the sunlight is converted into an electric signal;
step 2, the photovoltaic module outputs the electric energy to the outside through the DC/DC power supply controller, and meanwhile, an electric signal corresponding to the intensity of the sunlight brightness is output to the outside through the dimming controller;
step 3, the dimming controller transmits the electric signal to each single lamp controller;
and 4, each single lamp controller controls the output power of the corresponding power supply driver according to the corresponding electric signal, and the power supply driver drives the corresponding L ED light source to emit light according to the output power.
Preferably, before executing step 1, it is further determined whether the current time is in the working period, that is, whether the current time is greater than or equal to the starting time per day T1And is less than or equal to the closing time T per day2(ii) a If the current time is not in the working period, the photovoltaic module is usedThe connection with the dimming controller and the DC/DC power controller is cut off.
Preferably, the dimming controller is connected to a database, and continuously records the data of the electrical signal output by the dimming controller and transmits the data to the database.
The invention has the beneficial effects that:
the application of the invention realizes the aim that the L ED illumination brightness of the tunnel entrance is synchronous with the sunlight intensity outside the tunnel, improves the comfort level of the driving environment of the tunnel at the tunnel entrance and exit, and utilizes the natural energy of photovoltaic power generation to save electricity.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 shows a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is a flow chart illustrating the operation of one embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1, an adaptive photovoltaic L ED tunnel enhanced lighting system includes a power supply and a number of light fixtures disposed within the tunnel.
The power supply comprises a photovoltaic assembly, a dimming controller and a DC/DC power supply controller, and each lamp comprises a power supply driver, an L ED light source and a single lamp controller.
The dimming controller is abbreviated in english as acu (area Control unit), and the single lamp controller is abbreviated in english as tcu (terminal Control unit).
The photovoltaic module is arranged outside the tunnel, converts sunlight outside the tunnel into electric energy, records the brightness of the sunlight and converts the brightness of the sunlight into an electric signal;
the photovoltaic module is respectively connected with the dimming controller and the DC/DC power controller, the electric energy is output outwards through the DC/DC power controller, and meanwhile, an electric signal corresponding to the intensity of the sunlight is output outwards through the dimming controller;
the DC/DC power supply controller is connected with the power supply driver of each lamp through a power line and supplies power to the power supply driver;
the dimming controller is connected with each single lamp controller through a control line and transmits the electric signals to the single lamp controllers;
each single lamp controller controls the output power of the corresponding power driver according to the corresponding electrical signal, and the power driver drives the L ED light source to emit light according to the output power.
The principle of the invention is that the photovoltaic module is used as a power supply to directly drive L ED light source to emit light, and simultaneously, the photovoltaic module is also used as energy conversion equipment and a sunlight intensity sensor, thereby not only realizing that the illumination brightness of a tunnel entrance L ED is synchronous with the sunlight intensity outside the tunnel, improving the comfort level of the driving environment of the tunnel at the entrance and the exit of the tunnel, but also utilizing the natural energy of photovoltaic power generation and saving the electricity.
In some embodiments, the DC/DC power supply controller is further provided with a clock module, the photovoltaic module is connected with the clock module, and the clock module adjusts the working time period of the DC/DC power supply controller according to the longitude and latitude and the season where the tunnel is located.
The invention also provides an operation method of the adaptive photovoltaic L ED tunnel enhancement lighting system, which comprises the following steps:
step 1, the photovoltaic module starts to work, the sunlight is converted into electric energy, and the brightness of the sunlight is converted into an electric signal;
step 2, the photovoltaic module outputs the electric energy to the outside through the DC/DC power supply controller, and meanwhile, an electric signal corresponding to the intensity of the sunlight brightness is output to the outside through the dimming controller; (ii) a
Step 3, the dimming controller transmits the electric signal to each single lamp controller; (ii) a
And 4, each single lamp controller controls the output power of the corresponding power supply driver according to the corresponding electric signal, and the power supply driver drives the corresponding L ED light source to emit light according to the output power.
In some embodiments, before performing step 1, it is further determined whether the current time is in the working period, i.e., whether the current time is greater than or equal to the starting time per day T1And is less than or equal to the closing time T per day2(ii) a And if the current time is not in the working period, cutting off the connection between the photovoltaic module and the dimming controller and the DC/DC power supply controller.
In some embodiments, the dimming controller is connected to a database, and the data of the electrical signal output by the dimming controller is continuously recorded and transmitted to the database.
In practical application, the tunnel entrance TH is regulated according to the industry recommendation JTG/T D70/2-01-2014 detailed design rule of highway tunnel lighting issued by the department of transportation1The road surface luminance of (a) is calculated as follows:
Lth1＝k×L20(S)
Lth1: human mouth segment TH1Luminance (cd/m)2)
k: inlet section TH1Reduction factor of brightness
L20(S): luminance outside the hole (cd/m)2)
Outside hole brightness L20(S) is designed to be the maximum outside brightness of the tunnel at noon in sunny days in summer, and actually the outside brightness of the tunnel in a year or even a day can reach or approach L for a short period of time20(S), substantially at L20(S) varies between 10% and 80%, the external brightness of the day varies randomly from moment to moment, and the actual external brightness is a time-varying variable rather than a constant maximum L20(S), so the actual out-of-hole luminance can be expressed as a function of time t, and the above equation can be rewritten as:
Lth1(t)＝k×L20(t)
because the electric energy output by the photovoltaic cell is in a positive correlation with the illumination intensity of the photovoltaic cell, the specificity of tunnel reinforced illumination, namely the characteristic that the illumination brightness changes along with the change of the ambient brightness outside the tunnel, is met, and the L ED lamp allows the voltage and current parameters of a power supply to normally work within a large change range, so that feasibility is provided for the realization of the illumination system.
The reinforced lighting system consists of two parts, namely power supply side equipment and lamp side equipment, wherein the power supply side equipment comprises a clock module, a photovoltaic module, a DC/DC power supply controller and a dimming controller (ACU), the lamp side equipment comprises a power driver, a single lamp controller (TCU) and L ED light sources, and the starting time T of the reinforced lighting system per day1And closing time T2The system is started, the photovoltaic module generates power and provides direct current power to a power driver of an L ED light source through a DC/DC power controller, meanwhile, an output signal of the photovoltaic module provides a dimming control signal for a single lamp controller on the side of the lamp through a dimming controller, the output signal of the photovoltaic module which changes along with the change of the sunlight intensity of the tunnel is converted by the dimming control controller and then outputs a linear dimming signal to a L ED lamp, and the luminous intensity of the LED lamp is synchronously adjusted.
Lth(t)＝f(L20(t))
Lth(t): road surface luminance (cd/m) generated by hole reinforced illumination2)
Road surface brightness L generated by lighting is strengthened through holesth(t) should be greater than the specified specification value of the code the brightness value L outside the opening when the lighting is put into and taken out of operation every day20(t0) At the minimum, the capacity of the photovoltaic module needs to meet Lth(t0)≥Lth1(t0) The brightness value L outside the hole when the sunlight at the hole is strongest every day20(t1) At the maximum, the capacity of the photovoltaic module needs to meet Lth(t1)≥Lth1(t1). The capacity parameter of the photovoltaic module takes the high values of the two situations.
N＝max(F(Lth(t0)≥Lth1(t0))，F(Lth(t1)≥Lth1(t1)))
t0Putting in or cutting out the enhanced illumination time
t1The time of the strongest sunlight illumination at the opening
N capacity parameter of photovoltaic module
Referring to CJJ45-2015 urban road lighting design criteria for natural light illuminance levels when road lighting is on and off: the express way and the main way are preferably 30lx, and the secondary way and the branch are preferably 20 lx. According to 15lx/cd/m of asphalt pavement2Reduced, express and trunk L20(t0)＝2.0cd/m2Secondary trunk and branch L20(t0)＝1.4cd/m2。L20(t1) Taking value according to brightness outside the cave at noon in sunny days in summer, namely L20(t1)＝L20(S)。
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The self-adaptive photovoltaic L ED tunnel reinforced lighting system comprises a power supply and a plurality of lamps arranged in a tunnel, and is characterized in that the power supply comprises a photovoltaic module, a dimming controller and a DC/DC power supply controller, wherein each lamp comprises a power supply driver, a L ED light source and a single lamp controller;
the photovoltaic module is arranged outside the tunnel, converts sunlight outside the tunnel into electric energy, records the brightness of the sunlight and converts the brightness of the sunlight into an electric signal;
the photovoltaic module is respectively connected with the dimming controller and the DC/DC power controller, the electric energy is output outwards through the DC/DC power controller, and meanwhile, an electric signal corresponding to the intensity of the sunlight is output outwards through the dimming controller;
the DC/DC power supply controller is connected with the power supply driver of each lamp through a power line and supplies power to the power supply driver;
the dimming controller is connected with each single lamp controller through a control line and transmits the electric signals to the single lamp controllers;
each single lamp controller controls the output power of the corresponding power driver according to the corresponding electrical signal, and the power driver drives the L ED light source to emit light according to the output power.
2. The adaptive photovoltaic L ED tunnel accent lighting system of claim 1, wherein the DC/DC power controller is further provided with a clock module, the photovoltaic module is connected with the clock module, and the clock module adjusts the operation time period of the DC/DC power controller according to the longitude and latitude and the season of the tunnel.
3. The method of operating an adaptive photovoltaic L ED tunnel enhancement lighting system according to claim 1, comprising the steps of:
step 1, the photovoltaic module starts to work, the sunlight is converted into electric energy, and the brightness of the sunlight is converted into an electric signal;
step 2, the photovoltaic module outputs the electric energy to the outside through the DC/DC power supply controller, and meanwhile, an electric signal corresponding to the intensity of the sunlight brightness is output to the outside through the dimming controller; (ii) a
Step 3, the dimming controller transmits the electric signal to each single lamp controller; (ii) a
And 4, each single lamp controller controls the output power of the corresponding power supply driver according to the corresponding electric signal, and the power supply driver drives the corresponding L ED light source to emit light according to the output power.
4. Root of herbaceous plantThe method of claim 1 wherein said step 1 is further preceded by determining whether a current time is in an on-time period, i.e., whether said current time is greater than or equal to a daily activation time T1And is less than or equal to the closing time T per day2(ii) a And if the current time is not in the working period, cutting off the connection between the photovoltaic module and the dimming controller and the DC/DC power supply controller.
5. The method of claim 1, wherein the dimming controller is connected to a database, and the data of the electrical signals output by the dimming controller is continuously recorded and transmitted to the database.
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| CN205278956U (en) * | 2015-11-11 | 2016-06-01 | 汕头市乐易得光电有限公司 | Street lamp that divides period control |
| CN205812455U (en) * | 2016-07-08 | 2016-12-14 | 武汉三剑照明器材有限公司 | A kind of solar LED intelligent road-lamp of adaptive environment light luminance |
| CN208063508U (en) * | 2018-01-05 | 2018-11-06 | 新疆大学 | A kind of tunnel entrance light modulating device based on photovoltaic power |
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- 2020-04-14 CN CN202010289360.3A patent/CN111465138A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6376932B1 (en) * | 2001-03-21 | 2002-04-23 | Tai-Her Yang | Solar cell-powered battery charging system in which battery output is controlled in response to charging current supplied by solar cell to battery |
| US20130113376A1 (en) * | 2011-11-09 | 2013-05-09 | Chao Hsiang LU | Photovoltaic module |
| CN205278956U (en) * | 2015-11-11 | 2016-06-01 | 汕头市乐易得光电有限公司 | Street lamp that divides period control |
| CN205812455U (en) * | 2016-07-08 | 2016-12-14 | 武汉三剑照明器材有限公司 | A kind of solar LED intelligent road-lamp of adaptive environment light luminance |
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Application publication date: 20200728 |