CN106455257A - Automatic control circuit capable of overcurrent protection for streetlamp - Google Patents
Automatic control circuit capable of overcurrent protection for streetlamp Download PDFInfo
- Publication number
- CN106455257A CN106455257A CN201610874145.3A CN201610874145A CN106455257A CN 106455257 A CN106455257 A CN 106455257A CN 201610874145 A CN201610874145 A CN 201610874145A CN 106455257 A CN106455257 A CN 106455257A
- Authority
- CN
- China
- Prior art keywords
- audion
- resistance
- pole
- colelctor electrode
- unidirectional thyristor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses an automatic control circuit capable of overcurrent protection for a streetlamp. The automatic control circuit is characterized by mainly comprising a diode rectifier U, a fuse FU, a one-way thyristor D1, a phototriode VT1, a triode VT2, a triode VT3, a triode VT4 and a triode VT5. By the automatic control circuit, the streetlamp can be automatically controlled to turn on when ambient brightness is not enough and can be automatically controlled to turn off when the ambient brightness is enough, the automatic control circuit is high in automation, the streetlamp is not needed to turn on or turn off by manual, thus, a large amount of electric energy is prevented from being wasted due to forget of turning off the streetlamp when light in the daytime is enough, and the electric energy is greatly saved. The automatic control circuit has an overcurrent protection function, a power supply can be automatically cut off when a mains supply fluctuates and an overcurrent occurs, so that the automatic control circuit is prevented from not being damaged by the overcurrent.
Description
Technical field
The present invention relates to a kind of on-off circuit, specifically refer to a kind of can overcurrent protection street light automatic control circuit.
Background technology
Energy shortage is the serious problems for facing in human social development, but people are not often in life
Substantial amounts of electric energy is wasted between careful.For example, current street lamp is all manually to carry out open and close control mostly, using this control
Method processed is relatively complicated, and easily occur in daytime bright and clear when but forget close street lamp situation, cause substantial amounts of electricity
Can waste.Therefore it provides a kind of control circuit that can automatically control street lamp open and close according to ambient brightness is then current
The task of top priority.
Content of the invention
It is an object of the invention to overcome current relatively complicated by the way of manually control street lamp open and close, and easily
Occur in daytime bright and clear when but forget close street lamp situation, the defect for causing substantial amounts of electric energy to waste, provide one
Kind can overcurrent protection street light automatic control circuit.
The purpose of the present invention is achieved through the following technical solutions：A kind of can overcurrent protection street light automatic control circuit, main
Will be by diode rectifier U, fuse FU, unidirectional thyristor D1, phototriode VT1, audion VT2, audion VT3, three
Pole pipe VT4, audion VT5, unidirectional thyristor D4, positive pole is connected with the cathode output end of diode rectifier U, negative pole is through electricity
The electric capacity C1 being connected with the P pole of unidirectional thyristor D1 after resistance R1, positive pole is connected with the control end of unidirectional thyristor D1, negative pole
The electric capacity C2 being connected with the N pole of unidirectional thyristor D1, one end is connected with the control end of unidirectional thyristor D1, the other end is through electricity
Resistance R2, the P pole being connected with the negative pole of electric capacity C2 after resistance R3 is connected with the junction point of resistance R2 and resistance R3, N pole is through steady
The Zener diode D3 that is connected with the colelctor electrode of audion VT2 after pressure diode D2, be serially connected in audion VT2 colelctor electrode and
Resistance R4 between the cathode output end of diode rectifier U, positive pole is connected with the colelctor electrode of audion VT2, negative pole is through electricity
The electric capacity C3 being connected with the P pole of Zener diode D3 after holding C4, is serially connected in colelctor electrode and the phototriode of audion VT2
Resistance R6 between the colelctor electrode of VT1, the electricity being serially connected between the colelctor electrode of phototriode VT1 and the base stage of audion VT2
Resistance R7, the electricity that positive pole is connected with the colelctor electrode of phototriode VT1, negative pole is connected with the emitter stage of phototriode VT1
Hold C5, the resistance R8 being serially connected between the emitter stage of audion VT2 and the base stage of audion VT4, one end and diode rectifier U
Cathode output end be connected, resistance R5 that the other end is connected with the P pole of unidirectional thyristor D4 after street lamp EL, one end and electricity
The resistance resistance that R5 is connected with the junction point of street lamp EL, the other end is connected with the emitter stage of audion VT4 after resistance R9
R10, the resistance R11 being serially connected between the colelctor electrode of audion VT3 and the colelctor electrode of audion VT5, and it is serially connected in audion
Resistance R12 composition between the control end of the colelctor electrode of VT5 and unidirectional thyristor D4；The N pole and two of the unidirectional thyristor D1
The cathode output end of pole pipe commutator U is connected；The P pole phase of the emitter stage of the phototriode VT1 and Zener diode D3
Connection；The emitter stage of the audion VT4 is extremely connected with the emitter stage of phototriode VT1 and the N of unidirectional thyristor D4 respectively
Connect, its colelctor electrode is connected with the emitter stage of audion VT3；The N pole of the unidirectional thyristor D4 is connected with its control end；Institute
The colelctor electrode for stating audion VT2 is connected with the colelctor electrode of audion VT3, its emitter stage is then connected with the base stage of audion VT3
Connect；The base stage of the audion VT5 is connected with the colelctor electrode of audion VT3, its emitter stage emitter stage then with audion VT3
It is connected；The emitter stage of the audion VT3 is also connected with the junction point of resistance R10 and resistance R9；The diode rectification
The one input pole of device U is with its another input pole collectively as power input after fuse FU.
The phototriode VT1 is 3DU11 type phototriode.
The unidirectional thyristor D1 and unidirectional thyristor D2 are 2N65S type unidirectional thyristor.
The present invention compared with the prior art, with advantages below and beneficial effect：
(1) present invention can automatically control street lamp and open when ambient brightness is inadequate, and when ambient brightness is enough then certainly
Dynamic control street lamp closing, its high degree of automation, street lamp is opened or closed without the need for manually, bright and clear on daytime so as to avoid
Shi Yin forgets to close street lamp and cause the situation that substantial amounts of electric energy is wasted to occur, and saves substantial amounts of electric energy.
(2) present invention has overcurrent protection function, and when civil power fluctuation occurs and overcurrent occurs, the present invention can be automatic
Deenergization, so as to protect the present invention not by overcurrent damage.
Description of the drawings
Fig. 1 is the integrated circuit structure chart of the present invention.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to
This.
Embodiment
As shown in figure 1, the present invention is mainly by diode rectifier U, fuse FU, unidirectional thyristor D1, phototriode
VT1, audion VT2, audion VT3, audion VT4, audion VT5, unidirectional thyristor D4, resistance R1, resistance R2, resistance
R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electric capacity C1,
Electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, street lamp EL, Zener diode D2 and Zener diode D3 constitute.
Wherein, electric capacity C1, electric capacity C2, resistance R1, resistance R2, resistance R3 and unidirectional thyristor D1 collectively constitute a mistake
Stream protection circuit.Its concrete structure is that the positive pole of electric capacity C1 is connected with the cathode output end of diode rectifier U, negative pole warp
It is connected with the P pole of unidirectional thyristor D1 after resistance R1.The positive pole of electric capacity C2 is connected with the control end of unidirectional thyristor D1, is born
Pole is connected with the N pole of unidirectional thyristor D1.One end of resistance R2 is connected with the control end of unidirectional thyristor D1, other end warp
It is connected with the negative pole of electric capacity C2 after resistance R3.The N pole of unidirectional thyristor D1 and the cathode output end phase of diode rectifier U
Connection.
Unidirectional thyristor D1 adopts 2N65S type unidirectional thyristor, and the resistance of resistance R1 is 8 Ω, and the resistance of resistance R2 is
100Ω；Resistance R3 is detection resistance, can change the setting value of overcurrent by arranging different resistances, in the present embodiment,
The resistance of resistance R3 is set to 1 Ω.The capacitance of electric capacity C1 and electric capacity C2 is 10 μ F.
The P pole of Zener diode D3 is connected with the junction point of resistance R2 and resistance R3, N pole after Zener diode D2 with
The colelctor electrode of audion VT2 is connected.Resistance R4 is serially connected in the colelctor electrode of audion VT2 and the negative pole of diode rectifier U is defeated
Go out between end.Therefore, Zener diode D2 and Zener diode D3 and resistance R1 are collectively forming mu balanced circuit.Two pole of voltage stabilizing
Pipe D2 and Zener diode D3 are all using 2CW6 type Zener diode, and the resistance of resistance R4 is 47K Ω.
Electric capacity C3 and electric capacity C3 are then collectively forming filter circuit, the positive pole of electric capacity C3 and the colelctor electrode of audion VT2
It is connected, negative pole is connected with the P pole of Zener diode D3 after electric capacity C4.The capacitance of electric capacity C3 and electric capacity C4 is 10 μ F.
Resistance R6 is serially connected between the colelctor electrode of the colelctor electrode of audion VT2 and phototriode VT1.Resistance R7 is serially connected in
Between the base stage of the colelctor electrode of phototriode VT1 and audion VT2.The current collection of the positive pole of electric capacity C5 and phototriode VT1
Pole is connected, and negative pole is connected with the emitter stage of phototriode VT1.Resistance R8 is serially connected in the emitter stage of audion VT2 and three
Between the base stage of pole pipe VT4.One end of resistance R5 is connected with the cathode output end of diode rectifier U, and the other end is through street lamp
It is connected with the P pole of unidirectional thyristor D4 after EL.One end of resistance R10 is connected with the junction point of resistance R5 and street lamp EL, separately
One end is connected with the emitter stage of audion VT4 after resistance R9.Resistance R11 is serially connected in the colelctor electrode of audion VT3 and three poles
Between the colelctor electrode of pipe VT5.Resistance R12 is serially connected between the control end of the colelctor electrode of audion VT5 and unidirectional thyristor D4.
Meanwhile, the emitter stage of phototriode VT1 is connected with the P pole of Zener diode D3.The audion VT4's
Emitter stage is connected with the emitter stage of phototriode VT1 and the N pole of unidirectional thyristor D4 respectively, its colelctor electrode and audion
The emitter stage of VT3 is connected.The N pole of the unidirectional thyristor D4 is connected with its control end.The colelctor electrode of the audion VT2
It is connected with the colelctor electrode of audion VT3, its emitter stage is then connected with the base stage of audion VT3.The base of the audion VT5
Pole is connected with the colelctor electrode of audion VT3, and its emitter stage is then connected with the emitter stage of audion VT3.The audion VT3
Emitter stage be also connected with the junction point of resistance R10 and resistance R9.The one input pole of diode rectifier U is through fuse
After FU, another is input into pole collectively as power input and is connected with 220 civil powers with which.
Phototriode VT1, audion VT2, audion VT3, audion VT4, audion VT5, electric capacity C5, resistance
R7, resistance R8, resistance R12 and resistance R11 collectively form a luminance detection circuit；The luminance detection circuit can detect ring
The brightness in border, turns on unidirectional thyristor D4 according to the brightness of environment.Phototriode VT1 is 3DU11 type phototriode,
Audion VT2～VT4 is all using 9012 type audions, and audion VT5 then adopts 9014 type audions, and the capacitance of electric capacity C5 is
4.7 μ F electrochemical capacitors, the resistance of resistance R7 is 1M Ω, and the resistance of resistance R8 and resistance R11 and resistance R12 is 10K Ω, should
Unidirectional thyristor D4 is 2N65S type unidirectional thyristor.
Diode rectifier U is 4 1N4001 type diode compositions, and the resistance of resistance R5 is 100K Ω, resistance R6's
Resistance is 4.7M Ω, and the resistance of resistance R9 and resistance R10 is 47K Ω.
During work, 220V alternating current exports 12V unidirectional current after diode rectifier U rectification, and unidirectional current is through two pole of voltage stabilizing
Pipe D2 and Zener diode D3 are supplied through luminance detection circuit after carrying out voltage stabilizing, and electric capacity C3 and electric capacity C4 filtering.Do not occurring
During overcurrent, current foldback circuit is failure to actuate.When there is overcurrent, the pressure drop of resistance R3 increases, and unidirectional thyristor D1 is turned on,
High current is fused directly through electric capacity C1, resistance R1 and unidirectional thyristor D1, at this moment fuse FU rapidly, follow-up so as to protect
Circuit do not damaged by overcurrent.
During normal circuit operation, daytime is stronger due to light, and phototriode VT1 is turned on, and audion VT2～VT4 all cuts
Only, turn on audion VT5, at this moment unidirectional thyristor D4 no current is flowed into and ended, and street lamp does not work.The dusk very night comes, electric capacity
When the voltage of C5 increases to sufficiently high, i.e. when the voltage of electric capacity C5 be enough to turn-on transistor VT2, audion VT2 and audion VT3
And audion VT4 is both turned on, audion VT5 ends because of no base current, and electric current is after resistance R11 and resistance R12 partial pressure
Input unidirectional thyristor D4, turns on unidirectional thyristor D4, and at this moment street lamp is lighted.Resistance R10 and resistance R9 can prevent three poles
Occurred during pipe VT2～VT4 on or off is delayed, the phenomenon for switching on and off so as to avoid circuit from duplicating.Such as
This then effectively can control the open and close of street lamp according to the brightness of environment, it is to avoid when daytime is bright and clear because forgetting to close
Street lamp and cause the situation that substantial amounts of electric energy wastes to occur, save substantial amounts of electric energy.
As described above, the present invention just can be realized well.
Claims (3)
1. a kind of can overcurrent protection street light automatic control circuit, it is characterised in that main by diode rectifier U, fuse
FU, unidirectional thyristor D1, phototriode VT1, audion VT2, audion VT3, audion VT4, audion VT5, unidirectional crystalline substance
Brake tube D4, positive pole is connected with the cathode output end of diode rectifier U, P of the negative pole after resistance R1 with unidirectional thyristor D1
The electric capacity C1 that pole is connected, positive pole is connected with the control end of unidirectional thyristor D1, negative pole is extremely connected with the N of unidirectional thyristor D1
The electric capacity C2 for connecing, one end is connected with the control end of unidirectional thyristor D1, negative pole phase of the other end after resistance R3 with electric capacity C2
Resistance R2, the P pole of connection is connected with the junction point of resistance R2 and resistance R3, N pole after Zener diode D2 with audion VT2
The Zener diode D3 that is connected of colelctor electrode, be serially connected in the colelctor electrode of audion VT2 and the negative pole output of diode rectifier U
Resistance R4 between end, positive pole is connected with the colelctor electrode of audion VT2, P of the negative pole after electric capacity C4 with Zener diode D3
The electric capacity C3 that pole is connected, the resistance R6 being serially connected between the colelctor electrode of audion VT2 and the colelctor electrode of phototriode VT1,
The resistance R7 being serially connected between the colelctor electrode of phototriode VT1 and the base stage of audion VT2, positive pole and phototriode VT1
Colelctor electrode be connected, electric capacity C5 that negative pole is connected with the emitter stage of phototriode VT1, be serially connected in sending out for audion VT2
Resistance R8 between the base stage of emitter-base bandgap grading and audion VT4, one end is connected with the cathode output end of diode rectifier U, another
The resistance R5 that is connected with the P pole of unidirectional thyristor D4 after street lamp EL of end, the junction point phase of one end and resistance R5 and street lamp EL
The resistance R10 that connection, the other end are connected with the emitter stage of audion VT4 after resistance R9, is serially connected in the current collection of audion VT3
Resistance R11 between the colelctor electrode of pole and audion VT5, and it is serially connected in colelctor electrode and the unidirectional thyristor D4 of audion VT5
Control end between resistance R12 composition；The N pole of the unidirectional thyristor D1 and the cathode output end phase of diode rectifier U
Connection；The emitter stage of the phototriode VT1 is connected with the P pole of Zener diode D3；The emitter stage of the audion VT4
Be connected with the emitter stage of phototriode VT1 and the N pole of unidirectional thyristor D4 respectively, the sending out of its colelctor electrode and audion VT3
Emitter-base bandgap grading is connected；The N pole of the unidirectional thyristor D4 is connected with its control end；The colelctor electrode of the audion VT2 and three poles
The colelctor electrode of pipe VT3 is connected, its emitter stage is then connected with the base stage of audion VT3；The base stage and three of the audion VT5
The colelctor electrode of pole pipe VT3 is connected, its emitter stage is then connected with the emitter stage of audion VT3；The transmitting of the audion VT3
Pole is also connected with the junction point of resistance R10 and resistance R9；The one input pole of the diode rectifier U is after fuse FU
With its another input pole collectively as power input.
2. according to claim 1 a kind of can overcurrent protection street light automatic control circuit, it is characterised in that described photosensitive
Audion VT1 is 3DU11 type phototriode.
3. according to claim 1 a kind of can overcurrent protection street light automatic control circuit, it is characterised in that described unidirectional
IGCT D1 and unidirectional thyristor D2 are 2N65S type unidirectional thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874145.3A CN106455257A (en) | 2016-09-30 | 2016-09-30 | Automatic control circuit capable of overcurrent protection for streetlamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874145.3A CN106455257A (en) | 2016-09-30 | 2016-09-30 | Automatic control circuit capable of overcurrent protection for streetlamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106455257A true CN106455257A (en) | 2017-02-22 |
Family
ID=58171879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610874145.3A Pending CN106455257A (en) | 2016-09-30 | 2016-09-30 | Automatic control circuit capable of overcurrent protection for streetlamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106455257A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348310A (en) * | 2010-08-03 | 2012-02-08 | 英飞特电子（杭州）有限公司 | Multi-path LED load power supply circuit |
| CN204948402U (en) * | 2015-07-02 | 2016-01-06 | 宁波摩米创新工场电子科技有限公司 | A kind of energy-saving auto-control switch circuit |
| CN205142595U (en) * | 2015-10-26 | 2016-04-06 | 天津创伟鑫科技有限公司 | Light -operated LED street lamp |
-
2016
- 2016-09-30 CN CN201610874145.3A patent/CN106455257A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348310A (en) * | 2010-08-03 | 2012-02-08 | 英飞特电子（杭州）有限公司 | Multi-path LED load power supply circuit |
| CN204948402U (en) * | 2015-07-02 | 2016-01-06 | 宁波摩米创新工场电子科技有限公司 | A kind of energy-saving auto-control switch circuit |
| CN205142595U (en) * | 2015-10-26 | 2016-04-06 | 天津创伟鑫科技有限公司 | Light -operated LED street lamp |
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Application publication date: 20170222 |