CN103002631A

CN103002631A - Intelligent solar micro-computerized soft-drive constant-current source controller

Info

Publication number: CN103002631A
Application number: CN2012100570576A
Authority: CN
Inventors: 何海军; 姚万欣
Original assignee: YICHUAN COUNTY YUGUANG NEW ENERGY LIGHTING DEVELOPMENT Co Ltd
Current assignee: YICHUAN COUNTY YUGUANG NEW ENERGY LIGHTING DEVELOPMENT Co Ltd
Priority date: 2012-03-07
Filing date: 2012-03-07
Publication date: 2013-03-27
Anticipated expiration: 2032-03-07
Also published as: CN103002631B

Abstract

The invention relates to the field of solar application technologies and discloses an intelligent solar micro-computerized soft-drive constant-current source controller. The intelligent solar micro-computerized soft-drive constant-current source controller comprises a shell which is highly waterproof, dampproof and corrosion-resistant. A circuit board in the shell is provided with an optical recognition circuit and is connected with an input end of a storage battery charging circuit and a solar panel respectively, and an output end of the storage battery charging circuit is connected with a voltage stabilizing circuit; the optical recognition circuit is connected with a charging switch control circuit of the storage battery charging circuit through an MCU (micro control unit); and the MCU is connected with a direct-current street lamp through a direct-current street lamp soft-drive constant-current source circuit, and the direct-current street lamp is connected with the MCU through a direct-current street lamp brightness control circuit. The intelligent solar micro-computerized soft-drive constant-current source controller has the functions of protection against storage battery overcharge, overdischarge, overload and short-circuit, intelligent constant-current control of operation time of full power and half power of the direct-current street lamp and high water proofing, damp proofing and corrosion resistance, and resources are saved.

Description

Solar energy Microcomputerized AC floppy drive moves the constant-current source controller

Technical field

The present invention relates to the controller technology field of solar street light, Tunnel Lamp, garden lamp application, relate in particular to the moving constant-current source controller of a kind of solar energy Microcomputerized AC floppy drive.

Background technology

In use there are several problems in a lot of solar street light Tunnel Lamps of present listing, garden lamp, controller for advertisement lamp:

1), the control time is nonstandard, can not turn off the light on time.Sometimes entirely bright round the clock, cause aging fast, the old and feeble severity of storage battery of LED lamp.

2), light-operated nonstandard, the sun one lamp that falls is bright sometimes, cloudy bright light sometimes, sometimes lights of vehicle and other light irradiation bright lights are neglected and are brightly suddenly gone out.

3), non-watertight, non-moistureproof, not corrosion protection, behind some months, the terminals no power that gets rusty appears, the fracture of wiring board parts, inner a lot of mosquito dirt.

4), have with the perfusion of branch glue and other chemical materials, the ability such as heat radiation, disposable products have been gone bad and can not have been repaiied, economic loss is larger.

5), charging performance is bad, whether time or not when filling, and has plenty of directly and fill, and do not have the protection of super-charge super-discharge, bad very fast of storage battery effectively utilizes lower.

6), do not have the half-power function, well-illuminated whole night, z causes that storage battery loss is large, LED lamp pearl is aging fast.

7), radiating effect is poor, parts are fragile, especially rectifier diode, slab bridge, the high-power pipe easy burn-out of field effect.

8), the LED lamp, power does not reach, and must add constant-current source, does not have the independent control constant-current source.

Summary of the invention

Technical problem for above solar street lamp controller existence; the invention provides the moving constant-current source controller of a kind of solar energy Microcomputerized AC floppy drive; be applicable to solar street light; garden lamp; advertising lamp; artificial lamp; the small-sized DC power station; have light-operated; time control is accurate; discharged and recharged the super-charge super-discharge protection, load has overcurrent; short circuit, anti-tampering protection; earth leakage protective is arranged; waterproof; moistureproof; corrosion protection has total power half-power performance, and good heat abstractor is arranged; in 100 meters scopes; do not consider Line Attenuation, the LED lamp can reach rated power, and reduces cost; it is satisfied so just to obtain the user, reaches expection and requires purpose.

For achieving the above object, the present invention adopts following technical scheme:

A kind of solar energy Microcomputerized AC floppy drive moves the constant-current source controller, comprising: light identification circuit, battery charging circuit, voltage stabilizing circuit, the moving constant-current source of direct current street lamp floppy drive, coding switch circuit, charge and discharge protecting display circuit, intelligent control chip MCU; Light identification circuit wherein, the input of battery charging circuit link to each other and link to each other with solar panel, and the output of battery charging circuit links to each other with voltage stabilizing circuit; Described light-operated identification circuit links to each other with the charge switch controlling circuits of battery charging circuit by intelligent control chip MCU; Described intelligent control chip MCU links to each other with the direct current street lamp by the moving constant-current source circuit of direct current street lamp floppy drive, and the direct current street lamp brightness control circuit that passes through of described direct current street lamp links to each other with intelligent control chip MCU; Described coding switch circuit and intelligent control chip MCU be electrically connected to form control direct current street lamp total power first half of the night bright light, the circuit of half-power bright light after midnight; Described intelligent control chip MCU and battery charging circuit, charge and discharge protecting display circuit be electrically connected to form have overcharge, cross put, overload, short-circuit protection function and PWM decide the rate tracking, pulse current charge, floating charge, fill the circuit of function by force.

Described solar energy Microcomputerized AC floppy drive moves the constant-current source controller, and described light-operated identification circuit is connected and composed through the recognition terminal 12 of electric resistance partial pressure end and intelligent control chip MCU by rectifier diode D2 by the interface CNI terminal 1 that connects solar panel.

Described solar energy Microcomputerized AC floppy drive moves the constant-current source controller, described battery charging circuit is comprised of charging circuit and charge switch controlling circuits, and charging circuit is connect the interface CNI terminal 3 of battery positive voltage by double diode D1 by the interface CNI terminal 1 that connects solar panel; Charge switch controlling circuits is linked to each other with the input of channel switches pipe F3N by optocoupler OP1 by the terminal 10 of intelligent control chip MCU, and the output of channel switches pipe F3N is connected between the solar panel negative pole CNI terminal 2 and earth terminal of charging circuit.

Described solar energy Microcomputerized AC floppy drive moves the constant-current source controller, the moving constant-current source circuit of described floppy drive is made of by oscillating tube F1 and double diode D2 connection the gate circuit integrated package, and the moving constant-current source of described floppy drive and intelligent control chip MCU connect formation Self-adjustment output voltage 0-90V circuit; Described gate circuit integrated package input links to each other with intelligent control chip MCU data output end; Oscillating tube F1 links to each other with the interface CNI terminal 3 of battery positive voltage with the connecting end of double diode D2; Described double diode D2 output links to each other with the interface CNI terminal 5 of street lamp load positive pole.

Described solar energy Microcomputerized AC floppy drive movement controller; described charge and discharge protecting display circuit is connected with the signal input electric terminal 13 of intelligent control chip MCU by the terminals of the interface CNI terminal 3 that connects storage battery by the signal of telecommunication behind the electric resistance partial pressure, and the output level terminal of described intelligent control chip MCU connects and composes with three LED light respectively.

Described solar energy Microcomputerized AC floppy drive moves the constant-current source controller, described direct current streetlight control circuit is connected with the moving constant-current source output of floppy drive by the interface CNI terminal 5 of link road lamp load positive pole, and the interface CNI terminal 6 of street lamp load negative pole is connected with the detection resistance of ground connection by anode, the drain electrode of switching tube F2; The grid of described switching tube F2 is connected to the excitation drive circuit that U3B forms by resistance respectively, and the U3B input of excitation drive circuit is connected to the data terminal 6 of intelligent control chip MCU by resistance, diode; The drain electrode of described switching tube F2 links to each other by the input of resistance with integrated package U3A, and integrated package U3A links to each other with the regulating circuit that regulating resistance forms; The output of described integrated package U3A is connected to intelligent control chip MCU by capacitance-resistance filter.

Because adopt aforesaid technical scheme, the present invention has following superiority:

A kind of solar energy Microcomputerized AC floppy drive moves the constant-current source controller, aims at solar DC electric power system, solar DC road lamp system design:

(1) be that control discharges and recharges (2) the 2nd, the control time (3) is that load control (4) is superpower waterproof, protection against the tide, corrosion protection, and (5) are that total power adds half-power, and energy savings (6) is autonomous system, replenishes Line Attenuation, improves brightness, and superiority is as follows:

1, forms with MCU intelligent chip single trigger and other special-purpose softwares, realize intelligent control.Indicate with three LED lamps, adopt the code switch programming, certainly answer light, open or close load, overcharge, cross and put.Overload, short-circuit protection, PWM are decided the rate tracking, pulse current charge, and floating charge is filled by force, and is very fast to the ratio of aging activating battery, greatly prolonged the useful life of storage battery.

2, adopt silica gel interplanting body seal, without the resin embedding, superpower waterproof, protection against the tide, corrosion protection, perfect heat-dissipating are repaired easyly, because usefulness is to insert the Bigpian integrated package, are difficult for causing binding post to get rusty, and wiring board, the parts erosion is bad ruptures.

3, this controller is provided with light controlling device, unfavorablely does light-operatedly with cell panel, and cell panel can not be contained in the lamp stand top can be contained in following and other places of lamp holder.Can borrow the lamp generating, the stronger energy output of light is larger, more to the storage battery charging, own loss is less, adds total power and half-power function total power first half of the night bright light, after midnight half-power bright light, saved storage battery, prolonged the LED lamp pearl life-span, reduced on the contrary the swing of wind-force yet, lamp stand does not make fracture yet.Improved the lamp stand life-span, removed the peace method of conventional batteries plate, be not subjected to the interference of external light, caused that street lamp goes out suddenly, bright hurriedly situation has not existed.Also do not find that by us what problem is arranged in product uses, the user is satisfied.Test at automobile, tractor, 220VLED illuminating street lamp, garden lamp, corridor lamp, advertising lamp, can both achieve the goal, multiple functional, stable, firm performance is relatively good.

4, this controller is provided with the moving constant current output circuit of floppy drive, transfers voluntarily and shows electric current, Voltage-output according to customer requirements load lamp size, reaches the brightness of LED lamp owing to adopted floppy drive moving, lamp is slowly bright, grow from weak to strong, it is entirely bright once to have cancelled conventional lights, and instant high-voltage impacts, hurt lamp pearl, cause and wear out soon, owing to adopt self controller and the moving constant-current source of floppy drive to be integrated, reduced cost, improved efficient, concrete advantage is as follows:

1). used single-chip microcomputer and special-purpose software, realized Based Intelligent Control, selected the plug-in sheet machine part, performance is firm, is convenient to repair.

2). utilize the accurate control of discharge of characteristic revision of battery discharge rate, final discharging voltage is the control point by the correction of discharge rate curve, removed simple voltage control and crossed the inaccuracy of putting, met the intrinsic characteristic of storage battery, namely no discharge rate has no end of a period voltage.

3). have overcharge, cross put, electrical short, overload protection, unique Automatic Control such as anti-reverse protection, Zhuo does not damage any parts.If controller occurs short in addition Anywhere and open circuit can not damage this controller.

4). adopted tandem PMW charging main road, it is nearly 80% to make the loss of voltage of charge circuit use the circuit of diode to reduce, and the high 30%----60% of the more non-PMW of charge efficiency has increased the electricity consumption time, cross the lifting charging of putting recovery, directly fill normally, floating charge and pulse.Make the ratio of aging activating battery very fast, adopt automatic control mode to make system that be arranged longer useful life, high-precision temperature-compensating is arranged simultaneously, automatically adjust working stability.

5). intuitively luminous tube (LED) indication photovoltaic cell, load condition, the user can understand operating position.

6). all controllers all adopt the technical grade chip, can move freely at high and cold, high temperature, wet environment, are provided with simultaneously total power and add the half-power pattern, and controller, storage battery, LED lamp are improved the life-span.

7). the machine adopts silica gel interplanting sealing, and superpower waterproof, anticorrosion, protection against the tide are arranged, and is convenient to repair, and has solved ordinary lamps controller binding post and has got rusty, and the problem that wiring board and parts are lost has prolonged useful life of controller.

8). 12V-24V is general for this controller direct current, charging current 10A---30A, load current 10A---60A.

9). the intellectual charging of connecting, better utilized solar cell, effectively raise more comprehensively charge efficiency.

10). the output of the wide Voltage-output 0----90V of this controller direct current maximum current can reach 1.4A, power can reach about 120W, according to load request Self-adjustment voltage, electric current, has improved the brightness of LED lamp pearl, because adopt soft driver circuit, improved the useful life of LED lamp.

Description of drawings

Fig. 1 is the circuit diagram of the moving constant-current source controller of solar energy Microcomputerized AC floppy drive.

Embodiment

With reference to accompanying drawing embodiments of the present invention are described.

In Fig. 1, a kind of solar energy Microcomputerized AC floppy drive moves the constant-current source controller, have superpower waterproof, protection against the tide, corrosion protection housing, comprise on the wiring board in the described housing: light-operated identification circuit, battery charging circuit, charge and discharge protecting display circuit, the moving constant current source control circuit of direct current street lamp floppy drive, coding switch circuit, intelligent control chip MCU; The circuit that described light-operated identification circuit and intelligent control chip MCU are electrically connected to form the street lamp unlatching of control direct current or close; Described coding switch circuit is electrically connected direct current street lamp total power first half of the night bright light, the circuit of half-power bright light after midnight with intelligent control chip MCU; Described intelligent control chip MCU and battery charging circuit, charge and discharge protecting display circuit connect and compose have overcharge, cross put, overload, short-circuit protection function and PWM decide the rate tracking, pulse current charge, floating charge, fill the circuit of function by force.

Described light-operated identification circuit has the recognition terminal of intelligent control chip MCU to connect and compose with the signal of telecommunication of rectifier diode D behind electric resistance partial pressure that is connected solar panel.

Described accumulator charging/discharging circuit is linked to the charging end CN terminal of F3N channel switches pipe by double diode D1 by the interface CNI terminal that connects solar panel, described interface CNI terminal 4 is by F3N channel switches pipe ground connection, and the other end consists of by triode Q2 grounding connection.

Described charge and discharge protecting display circuit by the interface CNI terminal 3 that connects storage battery by rectifying tube D behind electric resistance partial pressure the signal of telecommunication and the output level terminal of intelligent control chip MCU connect and compose with three LED light respectively;

Have the battery tension of demonstration less than 10.6V, the street lamp output voltage is closed, and solar cell is to battery state of charge;

Have the battery tension of demonstration greater than 10.6V and less than 14.5V, solar cell carries out charged state to storage battery;

Have the battery tension of demonstration greater than 14.5V and less than 17V, solar cell disconnects storage battery through charged state;

Have the battery tension of demonstration greater than 17V, close output and charged state;

LED3 blink states when having LED3 lighting lamp state when showing full power operation, half-power work, LED3 extinguishes off position.

The moving constant current source control circuit of described direct current street lamp floppy drive is formed switching circuit and is connected with C10, C11, C12 with bidirectional diode D6 by the interface CN1 terminal 5 of link road lamp load positive pole, the interface CNI terminal 6 of street lamp load negative pole is connected detection resistance by switching tube F2 and is connected with ground connection, the grid of described switching tube F2 is connected to the excitation drive circuit that U 3A forms by resistance respectively, and 1 jiao of the U 3A of excitation drive circuit is electrically connected with the output level terminal of intelligent control chip MCU.

Described coding switch circuit is electrically connected to form by the data terminal of code switch S1 and intelligent chip MCU;

Have KEY1 and press, be 24 hours day and night, front 8 minutes total powers, rear 4 minutes half-power operating states; Having KEY2 and press, is the light controlling device operating state in 4 hours total power evenings; Having KEY3 and press, is 5 hours total powers, the light controlling device operating state in evening of half-power work in 8 hours.

Among Fig. 1, the single-chip microprocessor MCU chip is to purchase Microchip Technology's american semiconductor key product: PIC8 position single-chip microcomputer (MCU).Form through burning, internal memory PWM discharges and recharges the control protection, light-operated, space-time, temperature control, load, short circuit, creepage protection function.1 jiao of VDD is by 5V triangle positive pole of stabilized voltage supply control power supply.

2 jiaos, 3 jiaos, 4 jiaos, 5 jiaos of single-chip microprocessor MCU are time, test and half-power program circuit, by four code switchs controls.The 2nd jiao of test lead, front 8 minutes total power bright lights, rear 4 minutes half-power bright lights.The 3rd jiao, 4 hours total power bright lights, the 4th jiao, 8 hours bright lights, front 4 hours total power bright lights, rear 4 hours half-power bright lights.The 5th jiao, 13 hours bright lights, front 5 hours total power bright lights, rear 8 hours half-power bright lights.MCU6 angle driver output by the driving amplifier that D4, C16, R12, R26, R13, C9, D5 and U3B, U4, R24, R11 form, promotes field effect transistor F1, F2 work, finishes load lamp constant current task.7 jiaos, 8 jiaos, 9 jiaos is respectively that three LED light respectively are connected in series a 1/4W4.7K fixed carbon resister as voltage matches, connects 5V triangle stabilized voltage power supply negative pole and forms the loop.LED1 is red, indication overvoltage, under-voltage, overload, short circuit, earth leakage protective.LED2 is yellow, and PWM decides rate and follows the tracks of and pulse current charge.LED3 is green, indication total power bright light, half-power bright light.The MCU10 angle is to discharge and recharge control, forms switching circuit control by R151/4W4.7K fixed carbon resister and light Europe OP1.Super-charge super-discharge drives the F3 switching tube and closes disconnection, finishes photocell, accumulator cell charging and discharging protection.MCU11 angle overload short circuit, creepage protection function connects the triangle positive pole of stabilized voltage supply by D3 and R21, R20, C14, U 3A form the loop, and the field should be managed IRF540 and be formed switching circuit.U 3A triangle serial connection R22, R5, the 10*0.6 wire jumper forms overload, short circuit, power-off restoration, power supply overdischarge road.Voltage is lower than the 10.6V protection, protects when over-charging of battery voltage is higher than 14.5V.The MCU12 angle is automatic identification, automatically adjusts.By D24148 switching diode R81/4W20K fixed carbon resister, R61/4W3K fixed carbon resister, C5 porcelain 104 electric capacity that are situated between form switching circuit, by photoelectricity Europe, or cell panel control, are lower than the 2.5V bright light, are higher than 2.5V and turn off the light and finish light-operated task.The MCU13 angle forms oscillating circuit by C11, R7, R9 switching circuit and CL1, F1, with U4 finish the moving constant-current source circuit output of floppy drive by D6 slab bridge C10, C11, C12, C13 filtering boost electrochemical capacitor output, to CN1 terminal 5 for bright light, be higher than 3.5V and turn off the light.Switching circuit is finished light-operated task by F2 switching tube access CN1 terminal 6 negative poles.The MCU14 angle is stabilized voltage power supply negative pole power supply terminal.CN1 is DC 45A among Fig. 1---8.25 six binding posts.1 rectifies the utmost point, and 2 end negative poles connect photovoltaic cell module and enter D1, and the VF20100 slab bridge connects CN1 terminal 2 by F3 and finishes storage battery charging task.3 rectify the utmost point, and 4 end negative poles connect storage battery.5 rectify the utmost point, and 6 end negative poles connect load lamp.

Described housing is silica gel interplanting can, is provided with seal groove in the middle of the shell, is provided with three LED light and 4 code switch display windows in the seal groove, and seal groove is outside equipped with the bucker that silica gel is made.

The cell panel of light controlling device is arranged on the lamp holder below, and controller movement, fin are to make fin with aluminium sheet, and middle and shell has silica gel heat radiation oil to be close to.Reach preferably radiating effect.

The present invention is not limited to above-mentioned execution mode, wants in the point range not changing the present invention, and various distortion can be arranged.As mentioned above, can also carry out 0----100% work controls than the solar energy intelligent in the scope.

LED1 and LED2 function declaration:

1. when cell voltage LED1 flicker during less than 10.6V, LED3 extinguishes, and closes output (chargeable)

2. work as cell voltage greater than 10.6V and bright less than 13.3VLED1, LED2 extinguishes (chargeable).

3. work as cell voltage greater than 13.3V and bright less than 14.5VLED1, LED2 flicker, (chargeable)

4. work as cell voltage greater than 14.5V and bright less than 17VLED2, (disconnecting charging)

5. work as cell voltage greater than 17V, LED1 and LED2 dodge entirely, and expression battery failures formula open circuit is closed output and charging.

The function declaration of LED3:

1. LED3 is bright when full power operation.

2. LED3 flicker when half-power is worked.

3. when not working, LED3 extinguishes.

The overload function:

1. when the excessive or short circuit of load current, close output, charge closing.

2. when LED1, LED2 are not got rid of in load, LED3 shows undesired shake.

3. when starting code switch TEST position and test, if load faulty is got rid of, see that LED1, LED2, LED3 normal bright otherwise LED1, LED2, LED3 are undesired.

The keypress function explanation:

1. work as KEY1 and press, for test pattern (no) pipe can be worked front 8 minutes total powers, rear 4 minutes half-powers day and night.

2. pressing as KEY3, is 2 hours full power operation (light-operated can be effective, could work evening).

3. pressing as KEY3, is 4 hours half-power of 4 hours total powers (light-operated can be effective, could work evening).

4. pressing as KEY4, is 5 hours total power and 8 hours half-power (light-operated can be effective, could work evening).

Although the present invention executes example with reference to the preferred side of accompanying drawing and is illustrated, concerning the technology of this area, the present invention can have various modifications and variations, various changes of the present invention, variation and etc. the usefulness thing contained by the content of appended claim.

Claims

1. a solar energy Microcomputerized AC floppy drive moves the constant-current source controller, and its feature is being: comprising: light identification circuit, battery charging circuit, voltage stabilizing circuit, the moving constant-current source of direct current street lamp floppy drive, coding switch circuit, charge and discharge protecting display circuit, intelligent control chip MCU; Light identification circuit wherein, the input of battery charging circuit link to each other and link to each other with solar panel, and the output of battery charging circuit links to each other with voltage stabilizing circuit; Described light-operated identification circuit links to each other with the charge switch controlling circuits of battery charging circuit by intelligent control chip MCU; Described intelligent control chip MCU links to each other with the direct current street lamp by the moving constant-current source circuit of direct current street lamp floppy drive, and the direct current street lamp brightness control circuit that passes through of described direct current street lamp links to each other with intelligent control chip MCU; Described coding switch circuit and intelligent control chip MCU be electrically connected to form control direct current street lamp total power first half of the night bright light, the circuit of half-power bright light after midnight; Described intelligent control chip MCU and battery charging circuit, charge and discharge protecting display circuit be electrically connected to form have overcharge, cross put, overload, short-circuit protection function and PWM decide the rate tracking, pulse current charge, floating charge, fill the circuit of function by force.

2. solar energy Microcomputerized AC floppy drive according to claim 1 moves the constant-current source controller, and its feature is being: described light-operated identification circuit is connected and composed through the recognition terminal 12 of electric resistance partial pressure end and intelligent control chip MCU by rectifier diode D2 by the interface CNI terminal 1 that connects solar panel.

3. solar energy Microcomputerized AC floppy drive according to claim 1 moves the constant-current source controller, its feature is being: described battery charging circuit is comprised of charging circuit and charge switch controlling circuits, and charging circuit is connect the interface CNI terminal 3 of battery positive voltage by double diode D1 by the interface CNI terminal 1 that connects solar panel; Charge switch controlling circuits is linked to each other with the input of channel switches pipe F3N by optocoupler OP1 by the terminal 10 of intelligent control chip MCU, and the output of channel switches pipe F3N is connected between the solar panel negative pole CNI terminal 2 and earth terminal of charging circuit.

4. solar energy Microcomputerized AC floppy drive according to claim 1 moves the constant-current source controller, its feature is being: the moving constant-current source circuit of described floppy drive is made of by oscillating tube F1 and double diode D2 connection the gate circuit integrated package, and the moving constant-current source of described floppy drive and intelligent control chip MCU connect formation Self-adjustment output voltage 0-90V circuit; Described gate circuit integrated package input links to each other with intelligent control chip MCU data output end; Oscillating tube F1 links to each other with the interface CNI terminal 3 of battery positive voltage with the connecting end of double diode D2; Described double diode D2 output links to each other with the interface CNI terminal 5 of street lamp load positive pole.

5. solar energy Microcomputerized AC floppy drive movement controller according to claim 1; its feature is being: described charge and discharge protecting display circuit is connected with the signal input electric terminal 13 of intelligent control chip MCU by the terminals of the interface CNI terminal 3 that connects storage battery by the signal of telecommunication behind the electric resistance partial pressure, and the output level terminal of described intelligent control chip MCU connects and composes with three LED light respectively.

6. solar energy Microcomputerized AC floppy drive according to claim 1 moves the constant-current source controller, it is characterized in that: described direct current streetlight control circuit is connected with the moving constant-current source output of floppy drive by the interface CNI terminal 5 of link road lamp load positive pole, and the interface CNI terminal 6 of street lamp load negative pole is connected with the detection resistance of ground connection by anode, the drain electrode of switching tube F2; The grid of described switching tube F2 is connected to the excitation drive circuit that U3B forms by resistance respectively, and the U3B input of excitation drive circuit is connected to the data terminal 6 of intelligent control chip MCU by resistance, diode; The drain electrode of described switching tube F2 links to each other by the input of resistance with integrated package U3A, and integrated package U3A links to each other with the regulating circuit that regulating resistance forms; The output of described integrated package U3A is connected to intelligent control chip MCU by capacitance-resistance filter.