CN105554969A - Infrared detection delayed half-bright and full-bright road lamp of scenic spot road - Google Patents
Infrared detection delayed half-bright and full-bright road lamp of scenic spot road Download PDFInfo
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- CN105554969A CN105554969A CN201610121879.4A CN201610121879A CN105554969A CN 105554969 A CN105554969 A CN 105554969A CN 201610121879 A CN201610121879 A CN 201610121879A CN 105554969 A CN105554969 A CN 105554969A
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- positive pole
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- pyroelectric infrared
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- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
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Abstract
The invention discloses an infrared detection delayed half-bright and full-bright road lamp of a scenic spot road, comprising a 9V direct-current power supply, a pyroelectric infrared probe and infrared signal amplification circuit, a voltage comparison circuit, a level power amplification delay and a light emitting diode drive circuit; the type of the pyroelectric infrared probe IC1 in the pyroelectric infrared probe and infrared signal amplification circuit is LN074B. In order to overcome the problem that ordinary road lamps in public places such as parks, gardens and river and lake side scenic spots waste energy, the pyroelectric infrared probe is used in the road lamp of the invention, the weak signals received the pyroelectric infrared probe are amplified so as to drive the road lamp; the road lamp is automatically lightened when a pedestrian approaches; after the pedestrian leaves away from the road lamp at certain distance, the road lamp delays for certain period of time in full brightness and then gradually turns to a half bright state; the working principle of the road lamp of the invention is greatly different from the ordinary delay lamp, the embarrassed phenomenon that the road lamp is extinguished at once when the time of the delay lamp arrives but the pedestrian has not leave away is avoided.
Description
Technical field
The invention belongs to electron controls technology and field of energy-saving technology, is postpone half bright complete bright street lamp about a kind of road in scenic area infrared acquisition.
Background technology
Now a lot of park, visit a park, the road of the public place such as view region, rivers lakeside all installed various illuminating street lamp, to facilitate visitor, pedestrian plays or views and admires.Every night, the illuminating street lamp of these public places was all opened, really very convenient crowded time marquis, but to when visitor is in the dead of night rare or rarely visitor patronizes, again can not by illuminating street lamp Close All, various illuminating street lamp majority is all that working overnight all through the night, and this just causes the very large waste of the energy.
For overcoming park, visit a park, there is the problem wasted energy in the common street lamp in public place such as view region, rivers lakeside, the present invention adopts pyroelectric infrared transducer and is amplified the small-signal that infrared probe receives, and then drives street lamp.The present invention through kinds of schemes test, compare and analyze, circuit have simple and direct, exempt from debugging feature, only use a small amount of common components and parts to achieve expection object.Accomplish pedestrian close to time automatically light street lamp, pedestrian is away from after street lamp one segment distance, and street lamp transfers half bright state to gradually by after complete bright time delay one section.It and general delayed lamp operation principle have a great difference, there will not be pedestrian not have the leave latency lamp time one to arrive, the embarrassing phenomenon that street lamp extinguishes at once, and it can effective conservation of power resource.
Below describe road in scenic area infrared acquisition of the present invention in detail and postpone that half bright complete bright street lamp is involved necessary in implementation process, guardian technique content.
Summary of the invention
Goal of the invention and beneficial effect: for overcoming park, visit a park, there is the problem wasted energy in the common street lamp in public place such as view region, rivers lakeside, the present invention adopts pyroelectric infrared transducer and is amplified the small-signal that infrared probe receives, and then drives street lamp.The present invention through kinds of schemes test, compare and analyze, circuit have simple and direct, exempt from debugging feature, only use a small amount of common components and parts to achieve expection object.Accomplish pedestrian close to time automatically light street lamp, pedestrian is away from after street lamp one segment distance, and street lamp transfers half bright state to gradually by after complete bright time delay one section.It and general delayed lamp operation principle have a great difference, there will not be pedestrian not have the leave latency lamp time one to arrive, the embarrassing phenomenon that street lamp extinguishes at once, and it can effective conservation of power resource.
Circuit working principle: the circuit that road in scenic area infrared acquisition postpones half bright complete bright street lamp adopts pyroelectric infrared transducer LN074B, after pyroelectric infrared transducer IC1 receives the rpyroelectric infrared signal of pedestrian's release, a frequency is become to be about the faint low frequency signal of 0.3 ~ 3Hz by rpyroelectric infrared control head IC1 internal conversion, the low frequency signal voltage comparator that input operational amplifier IC2 forms after NPN transistor VT1 amplifies.
Potentiometer RP in operational amplifier IC2 peripheral circuit is used for regulating infrared probe circuit sensitivity, can be used for adjusting the distance of pyroelectric infrared transducer IC1 detecting pedestrian close to street lamp.The 2nd pin voltage of operational amplifier IC2 is a little more than the 3rd pin input voltage of operational amplifier IC2 at ordinary times, operational amplifier IC2 output low level; When there being pedestrian to enter pyroelectric infrared transducer IC1 investigative range, rpyroelectric infrared control head IC1 exports certain voltage, this voltage amplifies through NPN transistor VT1 and operational amplifier IC2 composition voltage comparator makes signal output voltage higher than reference voltage, at this moment the 6th pin of operational amplifier IC2 exports high level, make the conducting of enhancement mode N channel field-effect pipe VT2, LED 1 ~ LED9 is in complete bright state.Because the grid of enhancement mode N channel field-effect pipe VT2 is connected to electrochemical capacitor C3, the voltage of high level can only slowly be declined, electrochemical capacitor C3 is through discharging after a while, and LED 1 ~ LED9 shows as and gradually becomes half bright state by complete bright state.
Because the grid of enhancement mode N channel field-effect pipe VT1 is connected to resistance R3, even if during the 6th pin output low level (when pedestrian is away from the street lamp) of operational amplifier IC2, cause enhancement mode N channel field-effect pipe VT1 not exclusively to end, make LED 1 ~ LED9 maintain half bright state.
In order to make infrared signal amplifying circuit steady operation, in NPN transistor VT1 amplifying circuit, increase the negative-feedback circuit that resistance R1 and electric capacity C2 forms.
Technical scheme: road in scenic area infrared acquisition postpones half bright complete bright street lamp, it comprises 9V DC power supply, pyroelectric infrared transducer and infrared signal amplifying circuit, voltage comparator circuit, level power amplification delay and LED driving circuit, it is characterized in that:
Pyroelectric infrared transducer and infrared signal amplifying circuit: it is by pyroelectric infrared transducer IC1, electrochemical capacitor C1, NPN transistor VT1, resistance R2 forms, the model that pyroelectric infrared transducer IC1 selects is LN074B, the red line connection circuit positive pole VCC of pyroelectric infrared transducer IC1, the black wrapped circuits ground GND of pyroelectric infrared transducer IC1, the output S of pyroelectric infrared transducer IC1 connects the positive pole of electrochemical capacitor C1, the negative pole of electrochemical capacitor C1 connects the base stage of NPN transistor VT1, the collector electrode of NPN transistor VT1 is by resistance R2 connection circuit positive pole VCC, the emitter connection circuit ground GND of NPN transistor VT1,
Negative-feedback circuit: the base stage of one end of resistance R1 and a termination NPN transistor VT1 of electric capacity C2, the collector electrode of the other end of resistance R1 and another termination NPN transistor VT1 of electric capacity C2;
Voltage comparator circuit: it is made up of operational amplifier IC2 and potentiometer RP, the model that operational amplifier IC2 selects is CA3140,3rd pin of operational amplifier IC2 connects the collector electrode of NPN transistor VT1,2nd pin of operational amplifier IC2 connects the lever arm of potentiometer RP, the other end of one end of potentiometer RP and the 7th pin connection circuit positive pole VCC of operational amplifier IC2, potentiometer RP and the 4th pin connection circuit ground GND of operational amplifier IC2;
Level power amplifies delay and LED driving circuit: it is by switching diode D1, electrochemical capacitor C3, resistance R3, enhancement mode N channel field-effect pipe VT2 and white light-emitting diode LED1 ~ LED9 forms, 6th pin of operational amplifier IC2 connects the positive pole of switching diode D1, the negative pole of switching diode D1 connects the positive pole of electrochemical capacitor C3, the negative pole connection circuit ground GND of electrochemical capacitor C3, the negative pole of switching diode D1 connects the grid of enhancement mode N channel field-effect pipe VT2 and one end of resistance R3, the other end connection circuit positive pole VCC of resistance R3, the drain electrode of enhancement mode N channel field-effect pipe VT2 connects the negative pole of the negative pole of white light-emitting diode LED3 and the negative pole of white light-emitting diode LED6 and white light-emitting diode LED9, white light-emitting diode LED1 ~ LED3 contacts mutually, white light-emitting diode LED4 ~ LED6 contacts mutually, white light-emitting diode LED7 ~ LED9 contacts mutually, the positive pole connection circuit positive pole VCC of the positive pole of white light-emitting diode LED1 and the positive pole of white light-emitting diode LED5 and white light-emitting diode LED7, the source electrode connection circuit ground GND of enhancement mode N channel field-effect pipe VT2,
The positive pole of 9V DC power supply is connected with circuit anode VCC, and the negative pole of 9V DC power supply is connected with circuit ground GND.
Accompanying drawing explanation
Accompanying drawing 1 the invention provides the embodiment circuit working schematic diagram that a road in scenic area infrared acquisition postpones half bright complete bright street lamp.
Embodiment
Half bright complete bright street lamp circuit fundamental diagram and accompanying drawing explanation is postponed according to the road in scenic area infrared acquisition shown in accompanying drawing 1, and according to annexation between components and parts in each several part circuit described in summary of the invention, and components and parts technical parameter described in execution mode requires and circuit production main points are carried out enforcement and can be realized the present invention, is further described correlation technique of the present invention below in conjunction with embodiment.
The title of components and parts and important technological parameters thereof
IC1 is pyroelectric infrared transducer, and the model selected is LN074B, red line connection circuit positive pole VCC, and black line connects power cathode, that is: connection circuit ground GND;
IC2 is operational amplifier, and the model selected is CA3140, and it is that 8 pin dual inline type DIP encapsulate, and it is the operational amplifier of input with a slice MOSFET, and having high input impedance is 1.5T Ω and extremely low input current (10PA);
VT1 is NPN transistor, and the model selected is 2SC9013, multiplication factor β >=180;
VT2 is enhancement mode N channel field-effect pipe, and the model selected is IRFZ22;
D1 is switching diode, and the model selected is 1N4148;
RP is potentiometer, selects solid potentiometer, and the resistance of use is 36K Ω;
Resistance all uses metalfilmresistor or fixed carbon resister, and power is 1/8W; The resistance of resistance R1 is 2.2M Ω; The resistance of resistance R2 is 10K Ω; The resistance of resistance R3 is 180K Ω;
C1 is electrochemical capacitor, and capacity is 47 μ F/25V; C2 is electric capacity of the dacron, and its capacity is 0.039 μ F;
C3 is electrochemical capacitor, select withstand voltage for 25V, capacity be the electrochemical capacitor of 100 μ F;
LED1 ~ LED9 is white light-emitting diode, selects 9 highlighted white light-emitting diodes of ￠ 5;
DC is 9V DC power supply, and output current can be selected to be 1A/9V D.C. regulated power supply.
Circuit production main points and circuit debugging
The circuit structure postponing half bright complete bright street lamp because of road in scenic area infrared acquisition is fairly simple, as long as the electronic devices and components performance generally selected is intact, and the components and parts annexation to specifications in accompanying drawing 1 is welded, physical connection line and welding quality are through carefully checking correctly, and circuit of the present invention only needs to debug simply and can normally work;
Circuit debugging is regulator potentiometer RP mainly, selects suitable reference voltage, to reach higher detectivity;
It is 5 ~ 7m that pyroelectric infrared transducer IC1 is arranged on height distance ground, and the plane of infrared probe lens just overlooks installation to ground, can form a more satisfactory search coverage like this.Investigative range due to pyroelectric infrared transducer lens is the conical region of 85 degree, so should select desirable height and angle when mounted, makes the scope in pyroelectric infrared transducer IC1 detection dead band the smaller the better as far as possible.
Circuit structure design of the present invention, components' placement; and its face shaping and size etc. thereof are not all key technologies of the present invention; neither application claims protection guardian technique content; because not affecting the realization of specific implementation process of the present invention and goal of the invention, therefore do not illustrate one by one in the description.
Claims (1)
1. road in scenic area infrared acquisition postpones a half bright complete bright street lamp, and it comprises 9V DC power supply, pyroelectric infrared transducer and infrared signal amplifying circuit, voltage comparator circuit, level power amplification delay and LED driving circuit, it is characterized in that:
Described pyroelectric infrared transducer and infrared signal amplifying circuit are by pyroelectric infrared transducer IC1, electrochemical capacitor C1, NPN transistor VT1, resistance R2 forms, the model that pyroelectric infrared transducer IC1 selects is LN074B, the red line connection circuit positive pole VCC of pyroelectric infrared transducer IC1, the black wrapped circuits ground GND of pyroelectric infrared transducer IC1, the output S of pyroelectric infrared transducer IC1 connects the positive pole of electrochemical capacitor C1, the negative pole of electrochemical capacitor C1 connects the base stage of NPN transistor VT1, the collector electrode of NPN transistor VT1 is by resistance R2 connection circuit positive pole VCC, the emitter connection circuit ground GND of NPN transistor VT1,
Described negative-feedback circuit: the base stage of one end of resistance R1 and a termination NPN transistor VT1 of electric capacity C2, the collector electrode of the other end of resistance R1 and another termination NPN transistor VT1 of electric capacity C2;
Described voltage comparator circuit is made up of operational amplifier IC2 and potentiometer RP, the model that operational amplifier IC2 selects is CA3140,3rd pin of operational amplifier IC2 connects the collector electrode of NPN transistor VT1,2nd pin of operational amplifier IC2 connects the lever arm of potentiometer RP, the other end of one end of potentiometer RP and the 7th pin connection circuit positive pole VCC of operational amplifier IC2, potentiometer RP and the 4th pin connection circuit ground GND of operational amplifier IC2;
Described level power amplifies delay and LED driving circuit: it is by switching diode D1, electrochemical capacitor C3, resistance R3, enhancement mode N channel field-effect pipe VT2 and white light-emitting diode LED1 ~ LED9 forms, 6th pin of operational amplifier IC2 connects the positive pole of switching diode D1, the negative pole of switching diode D1 connects the positive pole of electrochemical capacitor C3, the negative pole connection circuit ground GND of electrochemical capacitor C3, the negative pole of switching diode D1 connects the grid of enhancement mode N channel field-effect pipe VT2 and one end of resistance R3, the other end connection circuit positive pole VCC of resistance R3, the drain electrode of enhancement mode N channel field-effect pipe VT2 connects the negative pole of the negative pole of white light-emitting diode LED3 and the negative pole of white light-emitting diode LED6 and white light-emitting diode LED9, white light-emitting diode LED1 ~ LED3 contacts mutually, white light-emitting diode LED4 ~ LED6 contacts mutually, white light-emitting diode LED7 ~ LED9 contacts mutually, the positive pole connection circuit positive pole VCC of the positive pole of white light-emitting diode LED1 and the positive pole of white light-emitting diode LED5 and white light-emitting diode LED7, the source electrode connection circuit ground GND of enhancement mode N channel field-effect pipe VT2,
The positive pole of described 9V DC power supply is connected with circuit anode VCC, and the negative pole of 9V DC power supply is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121879.4A CN105554969A (en) | 2016-03-03 | 2016-03-03 | Infrared detection delayed half-bright and full-bright road lamp of scenic spot road |
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| CN201610121879.4A CN105554969A (en) | 2016-03-03 | 2016-03-03 | Infrared detection delayed half-bright and full-bright road lamp of scenic spot road |
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| CN105554969A true CN105554969A (en) | 2016-05-04 |
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| CN201610121879.4A Pending CN105554969A (en) | 2016-03-03 | 2016-03-03 | Infrared detection delayed half-bright and full-bright road lamp of scenic spot road |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105898933A (en) * | 2016-06-10 | 2016-08-24 | 周芸 | Low-power fade-on and fade-off LED lighting lamp |
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| CN105898933A (en) * | 2016-06-10 | 2016-08-24 | 周芸 | Low-power fade-on and fade-off LED lighting lamp |
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Application publication date: 20160504 |