CN203340344U

CN203340344U - Urban street lamp energy-saving control system

Info

Publication number: CN203340344U
Application number: CN2013202678532U
Authority: CN
Inventors: 杨兵
Original assignee: Leshan Normal University
Current assignee: Leshan Normal University
Priority date: 2013-05-10
Filing date: 2013-05-10
Publication date: 2013-12-11
Anticipated expiration: 2023-05-10

Abstract

The utility model discloses an urban street lamp energy-saving control system, comprising a power circuit, a singlechip, a photoswitch circuit, a vehicle flow detection circuit, a pedestrian detection circuit, a road alarm detecting circuit, a signal processing circuit, a display circuit, and a street lamp lighting circuit. The photoswitch circuit, the vehicle flow detection circuit, the pedestrian detection circuit, and the road alarm detecting circuit are connected with the singlechip after signal processing by the signal processing circuit. The display circuit and the street lamp lighting circuit are connected with the singlechip. An S12 singlechip of the Freescale Company is used as a central controller. Various sensors detect current light environment changes, vehicle running changes, and person turnover changes in real time, so as to effectively and regularly control lighting of street lamps. Nowadays, when energy becomes scarce day by day, the system overcomes disadvantages that traditional street lamps are still in a lightening status under unnecessary conditions, thereby achieving an objective of saving energy.

Description

A kind of city street lamp energy-saving control system

Technical field

The utility model relates to a kind of city street lamp energy-saving control system.

Background technology

In the last few years, China's rapid economic development, but also paid huge resources and environment cost simultaneously, therefore, energy-conservation becoming alleviated the effective measures that this situation further realizes sustainable development.If a medium-sized city has 50000 street lamps, the power of every lamp is 200 watts, and on average every day, lighting hours was 10 hours, 1 year 360 days, and 0.8 yuan of average every degree electricity, the electricity charge of such a year are 28,800,000 yuan.This is a city, then expands the whole nation to, peeps one spot and knows the whole picture, and street lamp power consumption, the electricity charge in the whole nation will be very surprising numerals, and the electric weight that can save fully, the electricity charge will be quite surprising.Certainly, we can not be put off easily by a slight risk, and street lamp can not lack, and it and people live closely bound up.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of city street lamp energy-saving control system for the deficiencies in the prior art.

A kind of city street lamp energy-saving control system, comprise power circuit, single-chip microcomputer, light-controlled switching circuit, vehicle Flow Detection circuit, pedestrian detection circuit, road surface alarm detection circuit, signal processing circuit, display circuit and street lighting circuit; Light-controlled switching circuit, vehicle Flow Detection circuit, pedestrian detection circuit, road surface alarm detection circuit are all undertaken being connected to single-chip microcomputer after the signal processing by signal processing circuit, and display circuit is connected single-chip microcomputer with the street lighting circuit.

Controller centered by the S12 of Freescale company single-chip microcomputer, by multiple sensors, the current light environment of detection changes in real time, vehicle is advanced variation and flow of personnel changes the light on and off that control effectively, regularly street lamp, day by day rare today at the energy, overcome conventional road lamp and there is no need in situation the still shortcoming in illuminating state, thereby reached energy-conservation purpose.

The accompanying drawing explanation

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model control method flow chart;

Fig. 3 is the utility model system power supply schematic diagram;

Embodiment

Below in conjunction with specific embodiment, the utility model is elaborated.

With reference to figure 1 and Fig. 2, city street lamp energy-saving control system of the present utility model comprises power circuit, single-chip microcomputer (controller), light-controlled switching circuit, vehicle Flow Detection circuit, pedestrian detection circuit, road surface alarm detection circuit, signal processing circuit, display circuit and street lighting circuit; Light-controlled switching circuit, vehicle Flow Detection circuit, pedestrian detection circuit, road surface alarm detection circuit are all undertaken being connected to single-chip microcomputer after the signal processing by signal processing circuit, and display circuit is connected single-chip microcomputer with the street lighting circuit.

Single-chip microcomputer selects 16 MC9S12XS128MAA single-chip microcomputers of Freescale company as master controller, and this controller adopts direct current 5V Power supply, the characteristics such as have that low-power consumption, function are strong, aboundresources, speed are fast, easy to use.

Power circuit (Fig. 3): by 220v alternating voltage transformation to 24V, the 24V alternating current through the rectifier bridge rectification again through the three-terminal voltage-stabilizing chip surely to 15V, 15V voltage is that single-chip microcomputer, each transducer are powered through 7805 voltage stabilizings to 5V, 15V voltage is the power supply of LED lamp small cup through the lm2941 voltage stabilizing to 6.5V, and Landscape Lamp is powered after the 5V voltage stabilizing by the 9V DC power supply.

Light-controlled switching circuit: light sensor is selected photo resistance.The photo resistance of vulcanized lead material has wider spectral region, but its peak value is at region of ultra-red; The photo resistance spectral region relative narrower of cadmium sulfide material, but its sensitivity peaks is in visible region, main consideration visible ray in practical application, therefore we select MG45-4426 model cadmium sulphide photoconductive cell, its spectral pattern peak value is in visible region, its light resistance is 20K, and dark resistance is 200K.Because the S12 single-chip I/O mouth is set to input, when input voltage, at 3.0～5V the time, single-chip microcomputer inside is read as 1, and when input voltage is less than 1.5V, single-chip microcomputer is read as 0,1.5V～3.5V, state labile.We and photo resistance are connected in series the divider resistance of a 90K like this, and photo resistance is set to sampling resistor, try to achieve, and when light is stronger, sample voltage value is the 0.9V left and right, and when light is weak, sampled voltage is 3.45V.Then sampled voltage is directly given to single-chip I/O mouth as total systems soft ware switch, shielding street lamp control system when light is stronger, start street lamp control system when light is weak, guarantees system in the situation that just start working a little less than only having light, thereby reach the energy-conservation purpose of the first step.Optoelectronic switch is selected the correlation Photoelectric infrared switch, E3F-3L (transmitting terminal), and E3F-5NDl (receiving terminal), the 5V DC-voltage supply, receiving terminal does not receive signal, and output signal voltage is 0; When receiving terminal receives signal, output signal voltage is 5V, can directly give single-chip microcomputer and process.

The vehicle Flow Detection circuit: detect vehicle advance the transducer that changes we select this optoelectronic switch to pipe, when vehicle being arranged through out-of-date, can capture a low level signal to pipe and give the controller processing, mean under current street lamp to have the vehicle process, and controller can judge according to the state of adjacent street lamp travel direction and the speed of vehicle, the light on and off of controlling regularly street lamp in conjunction with direction and the speed of Vehicle Driving Cycle, realize that second step is energy-conservation.

The pedestrian detection circuit: pyroelectric sensor is selected the RE200B integration module.Pyroelectric sensor mainly utilizes the thermoelectricity principle, and the infrared ray of the wavelength of 9～10um that the induction human body sends, be converted to voltage signal by infrared energy.The induction range of this transducer is three-dimensional space, is a cone that subtended angle is 90 degree, and distance of reaction can reach 5m, adopts direct current 5V power supply.When sensing the infrared ray of human body radiation, output signal voltage is 3.3V; The induction not then output signal voltage be 0.This output signal can directly be given equally the common IO mouth of single-chip microcomputer and be read.Respond to by pyroelectric sensor the infrared detection that human body sends and have or not personnel to pass through, when having the people to pass through, controller can be lighted the LED lamp that is suspended on the side, pavement.Experiment shows, this transducer sensitivity is higher, and coverage is 5m, not only meets the needs of model, even can meet actual needs, has realized that the 3rd step is energy-conservation.

Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection range of the utility model claims.

Claims

1. a city street lamp energy-saving control system, it is characterized in that, comprise power circuit, single-chip microcomputer, light-controlled switching circuit, vehicle Flow Detection circuit, pedestrian detection circuit, road surface alarm detection circuit, signal processing circuit, display circuit and street lighting circuit; Light-controlled switching circuit, vehicle Flow Detection circuit, pedestrian detection circuit, road surface alarm detection circuit are all undertaken being connected to single-chip microcomputer after the signal processing by signal processing circuit, and display circuit is connected single-chip microcomputer with the street lighting circuit.