CN201374845Y - Intelligent LED Street Light Control System - Google Patents

Abstract

An intelligent LED street lamp control system, including a host computer, which is a computer hardware device, and intelligent system control software is installed in it, the host computer communicates with the control host through power carrier, and the control host is installed in the power distribution cabinet. The control host is connected to the serial communication interface of the power carrier routing, and the power carrier routing is respectively connected to the power carrier channel of each extension through the power line, and the power carrier channel of each extension is connected to the power control module through the serial communication interface, and the power control module Connect with LED street light power supply. The control system of the utility model can be classified and set according to the grade and characteristics of the road, and automatically control the turning on or off of the street lamp; it can adjust the brightness and working power of the lamp, and monitor the usage of the street lamp and the line in real time. You can skip the control system to manually control the switch of the street light.

Description

Intelligent LED Street Light Control System

technical field

The utility model relates to an LED street lamp control system, in particular to an intelligent system that can automatically control the switch and brightness of the LED street lamp according to changes in the working environment and time, and can monitor the working conditions of the street lamps in real time and feed back the working conditions to a host computer for display. LED street light control system.

Background technique

Energy issues are the main issues in today's society, how to improve energy efficiency is the leading idea of modern product development. For a new type of street lamp such as LED, energy-saving efficiency is one of the key parameters of the product. To maximize energy-saving efficiency, the introduction of an intelligent control system for LED street lamps has become the main development direction.

Since LED lamps use switching power supply as "rectifier", compared with the inductive rectifier of traditional lamps such as sodium lamp and metal halide lamp, the introduction of control system is more convenient and reliable, and the control methods realized are more diverse, flexible and humanized. However, most of the traditional LED street light switches now use time control or manual control, which will bring a lot of inconvenience in the actual management process: due to the uncertainty of the external environment, time control often results in that the street lights have been turned on at night, but the sky is not. It is not yet dark, or the street lights are still on in the morning, which causes a serious waste of electric energy; in winter, the sunshine time is short, and the street lights are still not turned on when it is dark, and the street lights are turned off before it is bright in the morning. Affect the travel of pedestrians and vehicles. Moreover, traditional street lamps cannot adjust the brightness of the lights. When there are fewer pedestrians in the middle of the night, the brightness of the street lamps is still high, which also causes unnecessary waste of electricity. If some street lamps are turned off, dark shadows will be formed on the road, posing a safety hazard. If it is manually controlled, staff members are required to inspect the street lamp site every day, which is too much work for urban traffic maintenance.

Existing LED control switches basically adopt a single-lamp control mode, that is, a controller is installed in each lamp, such as "a time-segmented, automatic LED street lamp controller" disclosed in CN201039533. The resistor monitors the external environment to realize the automatic lighting of the LED street lamp. In the microcontroller program, the street lamp is pre-set to be fully bright for the first 6 hours, half bright for the next 4 hours, and then automatically extinguished. This kind of controller adopts an independent working mode, does not transmit information to each other, does not affect each other, has a single function, and cannot form a control system. Although it has a certain effect on improving energy saving efficiency, the control method is not flexible and cannot be based on actual needs and the environment. The change of the control method changes at any time, and the maintenance is inconvenient. It is impossible to monitor the usage status of the street lamp in real time, and it cannot completely break away from the manual monitoring mode.

Utility model content

Aiming at the deficiency that most LED street lamps in the prior art can only be controlled by time or manually, and the time and brightness of turning on and off the lights cannot be adjusted according to changes in the environment, resulting in waste of electric energy, and the lack of real-time monitoring of the running status of the street lamps, the utility model The purpose is to provide an intelligent LED street lamp control system that adopts power carrier communication, can automatically control the switch of street lamps according to the brightness of the environment, can adjust the brightness of street lamps according to time, monitor the running status of street lamps in real time, and can switch between automatic and manual control.

The purpose of this utility model is achieved in this way: an intelligent LED street lamp control system includes a host computer, which is a computer hardware device, and intelligent system control software is installed in it, and the host computer communicates with the control host through a power carrier , the control host is installed in the power distribution cabinet, and the control host is connected to the serial communication interface of the power carrier routing. It is connected with the power control module, and the power control module is connected with the LED street lamp power supply. The control host is always in the working state, detects the brightness of the external environment in real time, automatically controls the on and off of the street lamp, and can change the illuminance value of the switch lamp through the host computer, and can realize the switching between manual and automatic control through the buttons on the control host; The control module automatically controls the dimming time and brightness of the street lamp according to the dimming time point and dimming ratio set by the system, and at the same time monitors the working status of the street lamp in real time, and feeds back the working status of the street lamp to the host computer for display.

In a further feature, the control host uses P89LPC938 as the core chip, and is respectively connected with a step-down chip SP6200, a light intensity sensor ISL29010 for realizing natural light detection, a clock chip PCF2129 for system time calibration, and a single-chip microcomputer P89LPC916 for communicating with the upper computer on the periphery.

The power control module uses STC12C5410AD as the core chip, and the DA chip MAX531 for adjusting the output voltage, the DA output active filter chip MAX7409, the clock chip DS1302 and the operational amplifier LM324 are respectively connected on the periphery.

Compared with the prior art, the utility model has the following significant advantages:

1. Using the power carrier communication method, various information in the system is transmitted through the existing power line, without the need to build a special communication network, which greatly reduces the cost and improves the reliability of the system;

2. According to the level and characteristics of the road, the street lights of different roads can be classified and set through the control system platform. When the brightness of the external environment reaches the set light-on value or light-off value, the street lights in the system are automatically turned on or off, and the lights are turned on and off. The brightness value of turning off the lights can also be reset according to the needs, so that the street lights can adapt to changes in the environment, reduce the waste of electric energy, and prolong the service life of the street lights;

3. Through the dimming time point and dimming ratio set by the control system, the brightness and working power of the street lamp can be automatically adjusted, which not only ensures the lighting of the street lamp but also reduces the consumption of electric energy, and can reset the dimming time point and dimming ratio according to environmental changes. The dimming ratio greatly improves the energy-saving efficiency of LED street lamps;

4. The system can monitor the use of street lights and lines in real time. Once there is a problem with the street lights, the system will promptly display the specific location of the street lights or lines in question through the host computer, which is convenient for the staff to monitor and repair or replace them in time, and speeds up the troubleshooting of street lights. The speed reduces the maintenance cost;

5. Under special circumstances, the controller can skip the control system and manually control the switch of the street lamp through the buttons on the control host at any time to realize the switch between automatic and manual control, which improves the adaptability of the system and reduces possible safety hazards .

Description of drawings

Fig. 1 is the structural block diagram of the utility model intelligentized LED street lamp control system;

Fig. 2 is a work flow diagram of the utility model;

Fig. 3 is a circuit schematic diagram of a control host in the utility model;

Fig. 4 is a schematic circuit diagram of a power supply control module in the present invention.

In the figure, 1-host computer, 2-control host, 3-power carrier routing, 4-power carrier channel, 5-power control module, 6-LED street lamp power supply.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

The intelligent LED street lamp control system of the utility model takes energy saving as the basic idea, and combines a convenient and humanized management system with the LED street lamp.

As shown in Figure 1, an intelligent LED street lamp control system includes a host computer 1, which is a computer hardware device with intelligent system control software installed in it, and the host computer 1 is installed in the background control room. The control host 2 communicates through the power carrier. The control host 2 is installed in the power distribution cabinet. The control host 2 is connected to the serial communication interface of the power carrier router 3. The power carrier router 3 is respectively connected to the power carrier channel of each extension through the power line. 4. The power carrier channel 4 of each extension is connected to the power control module 5 through the serial communication interface, and the power control module 5 is connected to the LED street lamp power supply 6 . The control host 2 is always in the working state, detects the brightness of the external environment in real time, automatically controls the opening and closing of street lights, and can change the illuminance value of the switch light through the host computer 1, and can realize manual and automatic control through the buttons on the control host 2 Switching; the power control module 5 automatically controls the dimming time and brightness of the street lamp according to the dimming time point and dimming ratio set by the system, and simultaneously monitors the working status of the street lamp in real time, and feeds back the working status of the street lamp to the host computer 1 for display. The power carrier router 3 is a commonly used router device in the power system. Its main function is to receive the information sent by the uplink control host 2 and the information transmitted by each power carrier channel 4, and convert the information sent by the uplink control host 2 through frequency conversion technology. Transmit according to the address of each power carrier channel 4, and transmit the information sent by each power carrier channel 4 to the upstream control host 2 through the serial communication interface; the power carrier channel 4 is a communication signal conversion channel commonly used in power communication, each All extensions are composed of power carrier channel 4, power control module 5 and LED street lamp power supply 6.

Referring to Fig. 3, the control host 2 uses the P89LPC938 microcontroller as the core chip, and is respectively connected with a step-down chip SP6200 on the periphery, a light intensity sensor ISL29010 for realizing natural light detection, a clock chip PCF2129 for system timing, and an upper computer 1 Communication microcontroller P89LPC916. The step-down chip SP6200 converts the 5v power supply voltage into 3.3v voltage to supply power to the system; the light intensity sensor ISL29010 converts the collected real-time natural light intensity into digital signals through the IIC communication mode through the internal integrated photoelectric module and AD converter. P89LPC938 chip; clock chip PCF2129 is an RTC real-time clock chip; The P89LPC938 chip analyzes and organizes the collected information such as ambient light intensity and real-time time, and at the same time, according to the illumination value of the switch light set by the host computer 1, controls the switch of the system street light, and sets the switch light time, dimming time point, The information on the dimming ratio of each time period is transmitted to each extension, and at the same time, the P89LPC938 chip analyzes and organizes the working conditions and time information of the lamps from each extension, and transmits it to the host computer 1 for display.

Referring to FIG. 4 , the power control module 5 uses STC12C5410AD as the core chip, and is connected with DA chip MAX531 for adjusting the output voltage, DA output active filter chip MAX7409, clock chip DS1302 and operational amplifier LM324 on the periphery. The DA chip MAX531 cooperates with the DA output active filter chip MAX7409 to convert the digital signal into a stable 0-5v analog signal, control the output current of the power supply, and realize the function of adjusting the power, brightness and switch of the lamp. The clock chip DS1302 is RTC real-time The clock chip records real-time time, and the operational amplifier LM324 cooperates with the AD conversion module integrated in STC12C5410AD to realize the function of sampling the output current of the power supply. The core of the system is the STC12C5410AD microcontroller, which controls the work of the lamps according to the switch lamp time, dimming time point and dimming ratio received from the upper computer 1, and at the same time collects the output current of the lamp power supply in real time through AD conversion, and The obtained data is analyzed and sorted, and finally transmitted to the control host 2 together with the time information.

The DA chip in the power control module 5 can also be MAX539, and the clock chip can also be PCF8563.

During installation, the control host 2 is installed in the power distribution cabinet, and each extension is installed together with the power supply. The power supply is designed with a control interface and a current sampling interface, and the extension is connected to the power supply through the interface. After the installation of the system hardware equipment is completed, the operator can set the initialization information such as the ambient illuminance value, the dimming time point and the dimming ratio in each time period through the host computer 1 when the system switches on and off, and can also be set according to the needs of the user. way to complete the initialization of the system.

After the system starts to work, the control host 2 is always in the working state without power off. The clock chip PCF2129 in the control host 2 records the real time of the system, and the light intensity sensor ISL29010 in the control host 2 detects the intensity of external natural light in real time. , and pass the ambient light intensity value to the core chip P89LPC938 for judgment. In this embodiment, two light intensity sensors ISL29010 are set to improve the accuracy of light detection. The control host 2 judges whether the illuminance value reaches the light-on value set by the system, and transmits the measured illuminance value and the recorded real-time time to the upper computer 1 every 1 minute. When the illuminance value reaches the light-on value, the control host 2 Control the switch of the power distribution cabinet to turn on all the lamps under the power distribution cabinet, and each power control module starts to work, and transmits the recorded real-time time, dimming time point, dimming ratio and other information to each sub-station of the system respectively, According to the dimming time point, dimming ratio and other information, the station adjusts the output current of the power supply in each time period by adjusting the DA conversion output voltage, so as to achieve the effect of adjusting the brightness of the light. At the same time, each substation collects the output current of the power supply in the substation through AD conversion, so as to judge the working condition of each lamp. Every 1 minute, the substation will transmit information such as the working status of the power supply and lamps, and the real time of the substation. to the control host 2, and the control host 2 transmits the information of the substation and the ambient illumination value collected in real time to the upper computer 1; if the LED street light of a substation fails or the brightness weakens, the system can get feedback information in time , easy to locate and replace. The control host 2 analyzes the time information of each substation. If the time difference between the substation and the control host 2 is greater than 1 minute, the control host 2 will send the time information again to correct the time of the wrong extension. When the control host 2 detects that the illuminance value of the environment reaches the light-off value, it will control the switch in the power distribution cabinet to turn off the LED street light.

During the time period when the lamps are not working every day, the user can reset the working conditions such as the illuminance value of the switch lamp, the dimming time point and the dimming ratio in each time period through the system platform of the host computer 1 according to the needs. The control host 2 is also provided with 4 buttons of manual, automatic, on, and off. In special cases, the user can change the control mode to manual control through the buttons, and set the on or off of the lamps through the manual control buttons.

Claims (4)

1. An intelligent LED street lamp control system, comprising a host computer (1), the host computer (1) is a computer hardware device, and an intelligent system control software is installed in it; it is characterized in that the host computer (1) and the control host ( 2) Communication through power carrier, the control host (2) is installed in the power distribution cabinet, the control host (2) is connected to the serial communication interface of the power carrier router (3), and the power carrier router (3) is respectively connected to the into the power carrier channel (4) of each extension, the power carrier channel (4) of each extension is connected to the power control module (5) through the serial communication interface, and the power control module (5) is connected to the LED street lamp power supply (6); The control host (2) is always in the working state, detects the brightness of the external environment in real time, automatically controls the opening and closing of street lights, and can change the illuminance value of the switch lamp through the host computer (1), and realizes Switching between manual and automatic control; the power control module (5) automatically controls the dimming time and brightness of the street lamps according to the dimming time point and dimming ratio set by the system, and at the same time monitors the working status of the street lamps in real time and feeds back the working status of the street lamps Go to the host computer (1) for display. 2. The intelligent LED street lamp control system according to claim 1, characterized in that the control host (2) uses P89LPC938 as the core chip, and is respectively connected with a step-down chip SP6200 and a light intensity sensor for detecting natural light on the periphery. ISL29010, the clock chip PCF2129 for system time calibration and the single chip microcomputer P89LPC916 communicating with the upper computer (1). 3. The intelligent LED street lamp control system according to claim 1, characterized in that, the power supply control module (5) uses STC12C5410AD as the core chip, and the DA chip MAX531 for adjusting the output voltage is connected to the periphery, and the DA output chip Source filter chip MAX7409, clock chip DS1302 and operational amplifier LM324. 4. The intelligent LED street lamp control system according to claim 3, wherein the DA chip in the power control module (5) is MAX539, and the clock chip is PCF8563.

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