CN103716943A - Light-operated street-lamp circuit - Google Patents
Light-operated street-lamp circuit Download PDFInfo
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- CN103716943A CN103716943A CN201210375122.XA CN201210375122A CN103716943A CN 103716943 A CN103716943 A CN 103716943A CN 201210375122 A CN201210375122 A CN 201210375122A CN 103716943 A CN103716943 A CN 103716943A
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Abstract
The invention discloses a light-operated street-lamp circuit used for controlling switch-on or switch-off of street lamps. The circuit includes a control module which includes a photosensitive control circuit unit and a control switch circuit unit. The photosensitive control circuit unit provides a control signal to the control switch circuit unit through use of change of natural-light intensity. The control switch circuit unit controls switch on or switch-off of the street lamps through use of the control signal provided by the photosensitive control circuit unit. The street lamps are switched on or switched off automatically through the change of the natural light so that street-lamp management and maintenance cost is reduced.
Description
Technical field
The present invention relates to streetlamp autocontrol field, particularly relate to a kind of Light control road lamp circuit.
Background technology
Along with social development, people's life various aspects have been goed deep in intellectuality, and street lamp is as the critical facility of public transport, and intelligent lighting is imperative.
At present, a lot of City Roadway Light Control Systems, also in labor management state, make the cost of road lamp management and maintenance very large.
Summary of the invention
Based on this, be necessary to provide a kind of manual operation that do not need, effectively reduce the Light control road lamp circuit of road lamp management and maintenance cost.
A kind of Light control road lamp circuit, be used for controlling street lamp and open or close, comprise control module, described control module connects described street lamp and power supply, for controlling street lamp and power connection or cut-off according to the change of illumination, described control module comprises photosensitive control circuit unit and control switch circuit unit;
Described photosensitive control circuit unit is for utilizing the change of natural lighting intensity that described control switch circuit unit control signal is provided, and described control signal is high level signal or low level signal;
Described control switch circuit unit is for utilizing described high level signal or the low level signal that described photosensitive control circuit unit provides to control described street lamp and power connection or cut-off;
Described control switch circuit unit comprises triode and optocoupler, described power output end connects the power input of described photosensitive control circuit and described control switch, the signal output part of described photosensitive control circuit unit connects the base stage of described triode, the signal input part of described optocoupler connects the collector electrode of power supply positive output end and described triode, the emitter of described triode connects power-output ground connection, and the signal output part of described optocoupler connects described power supply and described street lamp.
Therein in an embodiment, described control module also comprises power supply circuits unit, described power supply circuits unit is used for providing described photosensitive control circuit unit and described control switch circuit unit direct current, the power input of described power supply circuits unit connects the output of described power supply, and the output of described power supply circuits unit connects the power input of described photosensitive control circuit unit and described control switch circuit unit.
In an embodiment, described power supply circuits unit comprises transformer and current rectifying and wave filtering circuit therein, and described current rectifying and wave filtering circuit comprises rectifier bridge and the first filter capacitor; The input of described transformer connects power supply, and the output of described transformer connects described rectifier bridge, described rectification bridge output end described the first filter capacitor in parallel.
Therein in an embodiment, described photosensitive control circuit unit comprises photo resistance, variable resistor and circuits for triggering, described photo resistance and the power output end that is connected described power supply circuits unit after described variable resistor series connection, the signal input part of described circuits for triggering connects described photo resistance and described variable-resistance common port, and the signal output part of described circuits for triggering connects the base stage of described triode.
Therein in an embodiment, the Schmidt trigger circuit that when described circuits for triggering are, base chip 555 forms;
When described, base chip 555 positive voltage ends are connected the power supply positive output end of described power supply circuits unit with replacement pin;
When described the triggering pin of base chip 555 be connected with the locking pin of resetting as time base chip 555 signal input part, and connect described photo resistance and described variable-resistance common port;
When described, the signal output part of base chip 555 connects the base stage of described triode;
When described, the control pin of base chip 555 and grounding pin are connected to the power-output of described power supply circuits unit.
In an embodiment, described power supply circuits unit also comprises voltage stabilizing circuit therein.
Therein in an embodiment, described voltage stabilizing circuit is 7812 voltage stabilizing circuits, the input of described 7812 voltage stabilizing circuits connects described rectification filter circuit output end, and the output of described 7812 voltage stabilizing circuits connects the power input of described photosensitive control circuit unit and described control switch circuit unit.
Therein in an embodiment, the signal input part parallel connection power supply indicator light of described optocoupler and the first current-limiting resistance, described power supply indicator is connected with described the first current-limiting resistance.
In an embodiment, also comprise selection control switch therein, described selection control switch connects signal output part and the described street lamp of described optocoupler, for selecting manual switchover street lamp state or light-operated automatic switchover street lamp state.
In an embodiment, described selection control switch comprises the first contact therein, the second contact, the 3rd contact, the 4th contact, the 5th contact; Described the first contact connects a port of the signal output part of power supply positive output end and described optocoupler, described the second contact connects the positive supply input of described power supply circuits unit, described the 3rd contact is connected to described power-output by connecting described street lamp, described the 4th contact connects the another port of the signal output part of described optocoupler, and described the 5th contact is unsettled;
When described the first contact connects described the second contact and described the 3rd contact and connects described the 4th contact, it is light-operated automatic switchover street lamp state; When described the first contact connects described the 3rd contact and described the 4th contact and connects described the 5th contact, it is manual switchover street lamp state.
Above-mentioned Light control road lamp circuit, in control module, the change of photosensitive control circuit unit by using natural lighting intensity provides control switch circuit unit control signal, and control switch circuit unit utilizes the control signal control street lamp that photosensitive control circuit unit provides automatically open or close.Along with the change street lamp of natural lighting automatically opens or cuts out, reduced the expense of road lamp management and maintenance.
Accompanying drawing explanation
Fig. 1 is Light control road lamp circuit one embodiment circuit module figure of the present invention;
Fig. 2 is Light control road lamp circuit one preferred embodiment circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with drawings and Examples, Light control road lamp circuit is further described.
As shown in Figure 1, be Light control road lamp circuit one embodiment circuit module figure of the present invention.
This Light control road lamp circuit is used for controlling street lamp 110 to be opened or closes, and comprises control module 120, and for controlling street lamp 110 and power connection or cut-off, this control module 120 further comprises photosensitive control circuit unit 122 and control switch circuit unit 124.Photosensitive control circuit unit 122 is for utilizing the change of natural lighting intensity to provide control switch circuit unit 124 control signals, and control signal is high level signal or low level signal.High level signal or low level signal control street lamp 110 and power connection or cut-off that control switch circuit unit 124 provides for utilizing photosensitive control circuit unit 122.The power input of the output link control module 120 of power supply, the signal output part of photosensitive control circuit unit 122 connects the signal input part of control switch circuit unit 124, and the signal output part of control switch circuit unit 124 connects the output of street lamp 110 and power supply.
In this Light control road lamp circuit, the photosensitive control circuit unit 122 of control module 120 utilizes the change of natural lighting intensity that control switch circuit unit 124 high level signals or low level signal are provided, control switch circuit unit 124 utilizes high level signal or the low level signal that photosensitive control circuit unit 122 provides to control street lamp 110 and power connection or cut-off, thereby control street lamp 110, opens or closes.Along with the change street lamp of natural lighting automatically opens or cuts out, reduced the expense of road lamp management and maintenance.
As shown in Figure 2, be Light control road lamp circuit one preferred embodiment circuit theory diagrams of the present invention.
Further, as shown in Figure 2, control switch circuit unit 124 comprises triode Q1 and optocoupler U1.The signal input part of optocoupler U1 connects the collector electrode c of power supply positive output end and triode Q1, the emitter e of triode Q1 connects power-output ground connection, the base stage b of triode Q1 connects the signal output part of photosensitive control circuit unit 122, the signal output part of optocoupler U1 connects power supply and street lamp 110, controls street lamp 110 and power connection or cut-off.Photosensitive control circuit unit 122 utilizes the change output high level signal of natural lighting intensity or low level signal to triode Q1, controls triode Q1 conducting or cut-off.When the base stage b of triode Q1 receives the high level signal of photosensitive control circuit unit 122 transmissions, triode Q1 conducting, the signal input part of optocoupler U1 (being the signal input part of U1-A photophore) conducting, the signal output part of optocoupler U1 (being the signal output part of U1-B light-receiving device) conducting, output photoelectric stream, street lamp 110 switches on power, and street lamp is lighted; When the base stage b of triode Q1 receives the low level signal of photosensitive control circuit unit 122 transmissions, triode Q1 cut-off, not conducting of the signal input part of optocoupler U1 (being the signal input part of U1-A photophore), the signal output part of optocoupler U1 (being the signal output part of U1-B light-receiving device) cut-off, street lamp 110 extinguishes.
As shown in Figure 2, above-mentioned control module 120 further comprises power supply circuits unit 126, be used for providing photosensitive control circuit unit 122 and control switch circuit unit 124 direct currents, the power input of power supply circuits unit 126 connects the output of power supply, the power output end of power supply circuits unit 126 connects the power input of photosensitive control circuit unit 122 and control switch circuit unit 124, wherein, the power input of control switch circuit unit 124 is the power input after optocoupler U1 is connected with triode Q1.
Concrete, as shown in Figure 2, power supply circuits unit 126 comprises transformer T1 and current rectifying and wave filtering circuit, current rectifying and wave filtering circuit comprises rectifier bridge BD1 and the first filter capacitor C1.The input of transformer T1 connects power supply, and the output of transformer T1 connects rectifier bridge BD1, rectifier bridge BD1 output the first filter capacitor C1 in parallel.Electric power output voltage is exported to rectifier bridge BD1 after transformer T1 transformation, rectifier bridge BD1 becomes direct current by AC rectification, and after the first filter capacitor C1 filtering, becomes galvanic current and export to photosensitive control circuit unit 122 and control switch circuit unit 124.
Further, as shown in Figure 2, photosensitive control circuit unit 122 comprises photo resistance RG1, variable resistor RP1 and circuits for triggering, photo resistance RG1 and the power output end that is connected power supply circuits unit 126 after variable resistor RP1 series connection, the signal input part of circuits for triggering connects the common port of photo resistance RG1 and variable resistor RP1, the signal output part of circuits for triggering connects the signal input part of control switch circuit unit 124, i.e. the base stage b of triode Q1.The resistance of photo resistance RG1 changes along with the power of natural lighting, thereby the resistance of place in circuit changes the voltage at photo resistance RG1 two ends, changes, and offers subsequent triggers circuit evolving control signal.Variable resistor RP1 regulates the voltage of circuits for triggering signal input parts (being the point of A shown in Fig. 2), the illumination point that regulates street lamp to turn on light and turn off the light.Because geographical position is different, various places are different with natural lighting intensity at nightfall dawn, same geographical position, and due to the difference of synoptic climate, it is different with the illumination point of turning off the light that street lamp need to be turned on light.By regulating the resistance of variable resistor RP1, thereby control the illumination point that under diverse geographic location and different weather weather conditions, street lamp is turned on light and turned off the light.The triggering signal that under circuits for triggering (not shown) changes according to natural daylight, photo resistance RG1 and variable resistor RP1 provide, provides control signal to control switch circuit unit 124, thereby control street lamp 110, automatically opens or closes.Wherein, control signal is high level signal or low level signal.
In a preferred embodiment, as shown in Figure 2, the Schmidt trigger circuit that when above-mentioned circuits for triggering are, base chip 555 forms.Time base chip 555 positive voltage ends (pin 8) be connected the power supply positive output end of power supply circuits unit 126 with replacement pin (pin 4); Trigger pin (pin 2) and reset lock pin (pin 6) be connected as time base chip 555 signal input part, and connect the common port of photo resistance RG1 and variable resistor RP1; Signal output part (pin 3) connects the signal input part of control switch circuit unit 124, i.e. the base stage b of triode Q1; Control pin (pin 5) and be connected the power-output of power supply circuits unit 126 with grounding pin (pin 1).Time base chip 555 external the second filter capacitor C2 of control pin (pin 5), improve the stability of controlling pin voltage.
Time the base chip 555 Schmidt trigger trigger characteristic that forms, the input signal of varying level can cause exporting the output signal of varying level.When
time (Va is A point place voltage, and Vc is C point place voltage), time base chip 555 output pin 3 output signal ends output high level; When
time, time base chip 555 output pin 3 output signal end output signals remain unchanged; When
time, time base chip 555 output pin 3 output signal end output low levels.Owing to satisfying condition
or
time base chip output signal just can overturn.As shown in Figure 2, in the embodiment of the present invention, when natural lighting generating process causes
or
time, street lamp state just can change, while having avoided street lamp changed by intensity of illumination because of the photo resistance RG1 just lighting or other reasons causes, time base chip 555 output pin 3 output signal end output states overturn, and cause the phenomenon of street lamp critical flicker.
When photosensitive control circuit unit 122 provides triode Q1 high level signal, triode Q1 conducting, optocoupler U1-A is luminous, U1-B output photoelectric stream, street lamp 110 connects power supply, and street lamp is opened.When photosensitive control circuit unit 122 provides triode Q1 low level signal, triode Q1 cut-off, optocoupler U1 cut-off, street lamp 110 no powers, street lamp cuts out.
In a preferred embodiment, as shown in Figure 2, optocoupler U1 signal input part (U1-A photophore signal input part) parallel connection power supply indicator light D1 and the first current-limiting resistance R1, power supply indicator D1 connects with the first current-limiting resistance R1.Triode Q1 conducting, power supply indicator D1 lights, street lamp 110 power turn-ons, street lamp 110 is in opening.When power supply indicator, D1 lights, but street lamp 110 do not open, and can represent that street lamp 110 breaks down, convenient maintenance.The first current-limiting resistance R1 protection power source indicator light D1, avoids the excessive power supply indicator D1 of electric current to burn out.
Further, power supply circuits unit 126 power output end shunt regulating circuit (not shown), this voltage stabilizing circuit can be voltage-stabiliser tube circuit or 7812 voltage stabilizing circuits (with reference to figure 2), for stable DC voltage is provided.As shown in Figure 2, be 7812 voltage stabilizing circuits, the voltage input end of 7812 voltage stabilizing circuits connects the power output end of power supply circuits unit 126, and the voltage output end of 7812 voltage stabilizing circuits connects the power input of photosensitive control circuit unit 122 and control switch circuit unit 124.
In a preferred embodiment, during Schmidt trigger circuit that when the circuits for triggering (not shown) in above-mentioned photosensitive control circuit unit 122 is, base chip 555 forms, above-mentioned 7812 voltage stabilizing circuits output 12V burning voltages.
In a further embodiment, this Light control road lamp circuit also comprises selects control switch S1(with reference to figure 2), select control switch S1 to connect control switch circuit unit 124 signal output parts (in embodiment illustrated in fig. 2, signal output part for optocoupler U1) with street lamp 110, for selecting manual switchover street lamp 110 states or light-operated automatic switchover street lamp 110 states.
In a preferred embodiment, as shown in Figure 2, select control switch S1 to comprise the first contact, the second contact, the 3rd contact, the 4th contact, the 5th contact.The first contact connects a port of the signal output part (U1-B light-receiving device signal output part) of power supply positive output end and optocoupler, the second contact connects power supply circuits unit 126 positive voltage inputs, the 3rd contact is connected to power-output by connecting street lamp 110, the 4th contact connects the another port of the signal output part (U1-B light-receiving device signal output part) of optocoupler, and the 5th contact is unsettled.When the first contact connects the second contact and the 3rd contact and connects the 4th contact, be light-operated automatic switchover street lamp 110 states, the automatic bright light of street lamp 110 at dark, at day street lamp 110 is turned off the light automatically; When the first contact connects the 3rd contact and the 4th contact and connects the 5th contact, be manual switchover street lamp 110 states, use when lighting a lamp under the state of emergency or overhauling, facilitate the regular maintenance of street lamp.
In a preferred embodiment, as shown in Figure 2, triode Q1 base stage b with time base chip 555 signal output parts (pin 3) the second current resistor R2 that connects, while avoiding, base chip 555 output currents are excessive, guarantee that triode Q1 normally works.
The circuit theory diagrams of preferred embodiment shown in Fig. 2 of take are below example, and the operation principle of Light control road lamp circuit of the present invention is described in detail in detail.
Circuit working principle: night is unglazed according to time, RG1 is high resistant, Va is lower for A point voltage, is designed to
(Vc is C point place voltage), this is base chip 555 output high level signals constantly, triode Q1 conducting, power supply indicator D1 is bright, optocoupler U1 conducting, street lamp 110 power connections, street lamp 110 is opened.If now want street lamp 110 power supplys to disconnect, must meet
time base chip 555 output state overturn, just can make Q1 cut-off, disconnect street lamp 110 power supplys.
During dawn, because illumination increases, photo resistance RG1 presents low-resistance gradually, and now Va raises gradually, when
time, time base chip 555 output low level signals, triode Q1 cut-off, the path between street lamp 110 and power supply disconnects, street lamp 110 extinguishes.
Switch S 1 is for selecting control switch, can manual switchover street lamp state, can select manually to control or light-operated automatic control street lamp 110 opens or cuts out.S1 1 and 2 connects and when contact 3 and 4 connects, is Light control road lamp in contact, and street lamp 110 is lighted automatically at dark, and at day street lamp 110 is turned off the light automatically; When S1 contact 1 and 3 is connected and contact 4 and 5 connects, for manually controlling street lamp, street lamp 110 is lighted.
Foregoing description can find out, just because of time base chip 555 output high level signals or low level signal overturn must be satisfied
or
this specific condition, thus when street lamp 110 can not change because of the suffered intensity of illumination of photo resistance RG1 of just lighting or other reasons causes, time base chip 555 output signal overturn, thereby cause the phenomenon of street lamp 110 light flash.And by power supply indicator D1 is set, for monitoring street lamp 110, facilitate circuit maintenance.Select control switch S1 to can be used for the state of emergency and light a lamp or overhaul use, facilitate the regular maintenance of street lamp.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a Light control road lamp circuit, being used for controlling street lamp opens or closes, comprise control module, described control module connects described street lamp and power supply, for controlling street lamp and power connection or cut-off according to the change of illumination, it is characterized in that, described control module comprises photosensitive control circuit unit and control switch circuit unit;
Described photosensitive control circuit unit is for utilizing the change of natural lighting intensity that described control switch circuit unit control signal is provided, and described control signal is high level signal or low level signal;
Described control switch circuit unit is for utilizing described high level signal or the low level signal that described photosensitive control circuit unit provides to control described street lamp and power connection or cut-off;
Described control switch circuit unit comprises triode and optocoupler, described power output end connects the power input of described photosensitive control circuit and described control switch, the signal output part of described photosensitive control circuit unit connects the base stage of described triode, the signal input part of described optocoupler connects the collector electrode of power supply positive output end and described triode, the emitter of described triode connects power-output ground connection, and the signal output part of described optocoupler connects described power supply and described street lamp.
2. Light control road lamp circuit according to claim 1, it is characterized in that, described control module also comprises power supply circuits unit, described power supply circuits unit is used for providing described photosensitive control circuit unit and described control switch circuit unit direct current, the power input of described power supply circuits unit connects the output of described power supply, and the output of described power supply circuits unit connects the power input of described photosensitive control circuit unit and described control switch circuit unit.
3. Light control road lamp circuit according to claim 2, is characterized in that, described power supply circuits unit comprises transformer and current rectifying and wave filtering circuit, and described current rectifying and wave filtering circuit comprises rectifier bridge and the first filter capacitor; The input of described transformer connects power supply, and the output of described transformer connects described rectifier bridge, described rectification bridge output end described the first filter capacitor in parallel.
4. Light control road lamp circuit according to claim 3, it is characterized in that, described photosensitive control circuit unit comprises photo resistance, variable resistor and circuits for triggering, described photo resistance and the power output end that is connected described power supply circuits unit after described variable resistor series connection, the signal input part of described circuits for triggering connects described photo resistance and described variable-resistance common port, and the signal output part of described circuits for triggering connects the base stage of described triode.
5. Light control road lamp circuit according to claim 4, is characterized in that, the Schmidt trigger circuit that when described circuits for triggering are, base chip 555 forms;
When described, base chip 555 positive voltage ends are connected the power supply positive output end of described power supply circuits unit with replacement pin;
When described the triggering pin of base chip 555 be connected with the locking pin of resetting as time base chip 555 signal input part, and connect described photo resistance and described variable-resistance common port;
When described, the signal output part of base chip 555 connects the base stage of described triode;
When described, the control pin of base chip 555 and grounding pin are connected to the power-output of described power supply circuits unit.
6. Light control road lamp circuit according to claim 5, is characterized in that, described power supply circuits unit also comprises voltage stabilizing circuit.
7. Light control road lamp circuit according to claim 7, it is characterized in that, described voltage stabilizing circuit is 7812 voltage stabilizing circuits, the input of described 7812 voltage stabilizing circuits connects described rectification filter circuit output end, and the output of described 7812 voltage stabilizing circuits connects the power input of described photosensitive control circuit unit and described control switch circuit unit.
8. Light control road lamp circuit according to claim 1, is characterized in that, the signal input part parallel connection power supply indicator light of described optocoupler and the first current-limiting resistance, and described power supply indicator is connected with described the first current-limiting resistance.
9. Light control road lamp circuit according to claim 2, it is characterized in that, also comprise selection control switch, described selection control switch connects signal output part and the described street lamp of described optocoupler, for selecting manual switchover street lamp state or light-operated automatic switchover street lamp state.
10. Light control road lamp circuit according to claim 9, is characterized in that, described selection control switch comprises the first contact, the second contact, the 3rd contact, the 4th contact, the 5th contact; Described the first contact connects a port of the signal output part of power supply positive output end and described optocoupler, described the second contact connects the positive supply input of described power supply circuits unit, described the 3rd contact is connected to described power-output by connecting described street lamp, described the 4th contact connects the another port of the signal output part of described optocoupler, and described the 5th contact is unsettled;
When described the first contact connects described the second contact and described the 3rd contact and connects described the 4th contact, it is light-operated automatic switchover street lamp state; When described the first contact connects described the 3rd contact and described the 4th contact and connects described the 5th contact, it is manual switchover street lamp state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210375122.XA CN103716943A (en) | 2012-09-29 | 2012-09-29 | Light-operated street-lamp circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210375122.XA CN103716943A (en) | 2012-09-29 | 2012-09-29 | Light-operated street-lamp circuit |
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| CN103716943A true CN103716943A (en) | 2014-04-09 |
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| CN201210375122.XA Pending CN103716943A (en) | 2012-09-29 | 2012-09-29 | Light-operated street-lamp circuit |
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Cited By (4)
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| CN109309490A (en) * | 2018-12-04 | 2019-02-05 | 苏州东剑智能科技有限公司 | Key circuit |
| CN110139446A (en) * | 2019-05-31 | 2019-08-16 | 深圳市奋勇光电有限公司 | A kind of light-operated circuit |
| CN112423440A (en) * | 2020-11-10 | 2021-02-26 | 珠海银河智能电网有限公司 | Indicating lamp circuit, control method and device, power supply equipment and storage medium |
| CN114017691A (en) * | 2022-01-06 | 2022-02-08 | 深圳市亮久远光电子有限公司 | LED lamp bead with intelligent switching function and LED lamp |
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Application publication date: 20140409 |