CN2754309Y

CN2754309Y - Intelligent solar road lamp controller

Info

Publication number: CN2754309Y
Application number: CN 200420116475
Authority: CN
Inventors: 霍从崇
Original assignee: XINJIANG NEW ENERGY-SOURCE Co Ltd
Current assignee: XINJIANG NEW ENERGY-SOURCE Co Ltd
Priority date: 2004-12-06
Filing date: 2004-12-06
Publication date: 2006-01-25
Anticipated expiration: 2014-12-06

Abstract

The utility model relates to an intelligent solar energy road lamp controller, which is composed of charge and discharge protective circuits of an accumulator, a light control circuit and an SCM control circuit. A solar energy battery board uses a Schottky diode (D2) to charge the accumulator. The accumulator uses a switch (K) to connect with the control circuit. The light control circuit in the control circuit is composed of an integrated operational amplifier and a Schmitt trigger. A sampling end is connected with the solar energy battery board and the output end is connected with the resetting end of an SCM AT 89 C 51. When the voltage of the accumulator is charged to a certain degree, a control signal is sent to the P1 port and the P2 port of the SCM. The SCM executes a corresponding program and automatically changes lamp illuminating time. When the accumulator voltage is lower than the set voltage or the timing time comes, a system can automatically cut off output to wait for the light control reset and the under-voltage recovery of the accumulator in the second day.

Description

The intelligent solar controller for road lamp

Technical field

A kind of solar street lamp controller that adopts solar energy to provide ambient lighting to use is provided the utility model.

Background technology

At present, solar street light is controlled the four kinds of modes that mainly contain automatically, one is to use the light-operated circuit controller, two are to use the controller of light-operated circuit and timing circuit combination, the 3rd, utilize programmable timer to control, the 4th, with large-scale Radio Network System the street lamp of entire city is carried out centralized control, described four kinds of modes have the following disadvantages:

1, the light-operated circuit controller is to utilize photo resistance as the brightness of transducer acquisition environment, and photo resistance is very easily aging, moves the phenomenon that just can occur shifting to an earlier date bright lamp, hysteresis light-off after or two years, and makes system unstable even out of control.And lamp is work all night, not only consumes energy but also shorten the effective storage life of light fixture.

2, the controller of light-operated circuit and timing circuit combination is better with respect to light-operated controller, can carry out timing to street lamp and turn off the light, but the timing error is bigger, and the time is in case fix very difficult change or need artificial the change, the increase labor workload.

3, utilize programmable timer to control, though timing accuracy increases to some extent, needed manually constantly to adjust in four seasons spring, summer, autumn and winter in 1 year, workload is very big concerning large quantities of street lamp control.

4, it is too big with large-scale Radio Network System the street lamp of entire city to be carried out the centralized control investment, and a medium-sized city control system just needs millions of units, and cost is too high.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art and provides a kind of control circuit simple, with low cost, controlled function is strong, can adjust the street lamp controller of lighting time automatically according to the difference of the charge volume of storage battery charge volume on the same day and spring, summer, autumn and winter Various Seasonal.

The purpose of this utility model

The purpose of this utility model is achieved in that it is by battery charge-discharge control circuit, light-operated circuit and single chip machine controlling circuit constitute, solar cell charges a battery by Schottky diode D2, storage battery links to each other with control circuit by a K switch, light-operated circuit mainly is made of integrated operational amplifier and Schmidt trigger, its sampling end directly links to each other with the input of solar panel, output is connected with single chip computer AT 89C51 reset terminal, after battery tension is charged to a certain degree, can give control signal of P1.1 port of single-chip microcomputer, carry out corresponding program by the monitoring of single-chip microcomputer, change lighting time automatically; The accumulator cell charging and discharging protective circuit has two outputs; an output extremely links to each other with the control of additives for overcharge protection switching tube Q1; the output control terminal of another output by diode D4 and single-chip microcomputer with after be added in output control switch pipe Q2 control extremely go up; when overcharge of a battery; the Q1 conducting; solar panel stops charge in batteries, and when battery tension is lower than setting voltage or timing then, system cuts off output.Wait for second day light-operated resetting and the under-voltage recovery of storage battery.

Owing to adopted above-mentioned control mode, the utlity model has following advantage:

1, controlled function is strong, and control circuit can be regulated discharge time automatically according to different throughout the year charge volumes, belongs to intelligent control.

2, circuit is simple, and components and parts are the product of market public offering, easily buy, and cheap;

3, stable and reliable operation is suitable for suitability for industrialized production.

Description of drawings

Accompanying drawing is the utility model electrical schematic diagram;

A1: accumulator cell charging and discharging protective circuit, BAT: storage battery, A2 light-operated circuit; A3: three terminal regulator, A4:AT89C51 singlechip chip, A5: operational amplifier; XT: crystal oscillator, R1～6: resistor, C1～C3: capacitor; D1: rectifier diode, D2: Schottky diode, D3, D4: switching diode; D5: voltage stabilizing didoe, K: switch, Q1, Q2: field effect transistor; S+, S-: solar panel input port, OUT+, OUT-: controller output port.

Embodiment

Below in conjunction with accompanying drawing embodiment in detail the utility model work course of work and principle are described in detail:

Control circuit of the present utility model is made up of accumulator cell charging and discharging protective circuit, light-operated circuit and single chip machine controlling circuit.

Solar panel is linked into the control circuit from S+ and S-; solar cell is charged a battery by Schottky diode D2 by rayed generation electric energy; when battery tension is charged to when overcharging set point; accumulator cell charging and discharging protective circuit A1 makes field effect transistor Q1 conducting from O1 end output control signal; with solar panel output voltage clamper in low level; stop charge in batteries; when battery tension drops to recovery value; the control signal of O1 end disappears; field effect transistor Q1 ends, and solar panel recovers to charge normal.Can change the charge protection recovery value by regulating R2;

When battery tension is lower than under-voltage set point; accumulator cell charging and discharging protective circuit A1 makes the control end clamper of field effect transistor Q2 in low level from O2 end output control signal; Q2 is ended; storage battery stops load being exported; when battery tension returns to under-voltage recovery value; Q2 exports high level, stops the control to Q2, can change under-voltage recovery value by regulating R10.

Light-operated circuit adopts solar panel as sampling element, has overcome the shortcoming of photo resistance.Light-operated circuit makes single-chip microcomputer carry out corresponding bright lamp control by the change in voltage of sampling solar panel, when at dark, light-operated circuit is exported big black signal by D3 to the reset terminal of single chip computer AT 89C51, single chip computer AT 89C51 starts working, when at day, single chip computer AT 89C51 resets, and single-chip microcomputer P1.0 is output as low level, and system cuts off field effect transistor Q2 output.

Time control is finished by the timing routine in the single-chip microcomputer, control signal is sent into from the P1.1 mouth that A5 outputs to single chip computer AT 89C51, in the P1.7 mouth output cycle is 2 pulse per second (PPS)s, counter T0 input INT0 is sent in this pulse, turn-off the output of P1.0 mouth through 14400 countings, when battery tension is lower than set point, it is 1 pulse per second (PPS) program that single chip computer AT 89C51 carried out in the P1.7 mouth output cycle, in the P1.7 mouth output cycle is 1 pulse per second (PPS), counter T0 input INT0 is sent in this pulse, turn-off the output of P1.0 mouth through 14400 countings, when being higher than set point by high level, voltage in the battery discharging process changes over to when being lower than set point, count pulse number when system's output time is 2 seconds * A5 output high level+1 second * (count pulse number during 14400-integrated circuit A5 output high level), this time, when spring and fall, the charging interval increased gradually with level of charge in batteries and deciding on the same day, sunlight improves gradually, and system's output time increases gradually.During summer system's charging interval the longest, light is best, System production time is the longest.Autumn, system shortened in the charging interval gradually, and light dies down gradually, and System production time shortens gradually.System's charging interval winter is the shortest gradually, and light is the most weak, and System production time is the shortest, and when battery tension is lower than the under-voltage protection value, even timing does not finish, system also will cut off load automatically, protect storage battery.

Claims

1, a kind of intelligent solar controller for road lamp; constitute by accumulator cell charging and discharging protective circuit, light-operated circuit and single chip machine controlling circuit; it is characterized in that: storage battery ends the negative pole two ends and is connected with the two-way sample circuit; No. one sample circuit is sampled to battery tension; by the value of setting in advance storage battery is monitored and protected; send among the single chip computer AT 89C51 after battery tension is sampled on another road and handle single-chip microcomputer is adjusted street lamp automatically according to the charge condition and the storage battery on the same day at the charge volume of spring, summer, autumn and winter Various Seasonal lighting time length.