CN110381632A - A kind of LED lamp circuit with infrared sensor - Google Patents
A kind of LED lamp circuit with infrared sensor Download PDFInfo
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- CN110381632A CN110381632A CN201910601561.XA CN201910601561A CN110381632A CN 110381632 A CN110381632 A CN 110381632A CN 201910601561 A CN201910601561 A CN 201910601561A CN 110381632 A CN110381632 A CN 110381632A
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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]
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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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- 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
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Abstract
The invention discloses a kind of LED lamp circuits with infrared sensor, pass through setting infrared receiving module real-time reception to external infrared signal, when infrared receiving module receives infrared signal, it generates corresponding infrared control signal and is sent to MCU control circuit, whether infrared sensor real-time detection nearby has mobile object process, and it generates corresponding detection signal and is sent to MCU control circuit, the control process of MCU control circuit is divided into the infrared control stage, mobile object controls stage and normal control stage, after detecting mobile object or receiving the infrared signal of the LED light transmitting closed on, LED light module can be made to enter highlighted state and realize illumination；Advantage is that multiple LED light of some illumination region are balanced adjustment according to lighting demand, on the basis of energy-efficient, can guarantee that movement speed is transferred object faster and adequately illuminated, and object easy to remove is advanced, and meets currently practical lighting demand.
Description
Technical field
The present invention relates to a kind of LED lamp circuits, more particularly, to a kind of LED lamp circuit with infrared sensor.
Background technique
It is all bright to lamp using people in order to energy saving in many applications of current lighting area, it turns off the light when you leave
Illumination scheme.In the illumination scheme, when people is close to LED light, LED light is bright, and when people is far from LED light, LED
Lamp is automatic to turn off the light after the delay by certain time.In order to realize that people is bright to lamp, turns off the light when you leave, be all arranged in this kind of LED light
There is the sensor detected to mobile object, whether sensor real-time detection nearby has mobile object, send out according to detection result
Control signal, LED light turn on light or turn off the light under control signal control accordingly out.
Currently, applying there are mainly two types of the sensors detected in LED light to mobile object: using doppler principle
Microwave remote sensor and PIR infrared sensor.Using the microwave remote sensor of doppler principle, pass through transmitting microwave and reception
Microwave compares the microwave frequency of the microwave frequency received and transmitting, and judgement nearby whether there is mobile object.Although
Above-mentioned microwave remote sensor lamps and lanterns surface structure design will not impact, but microwave signal is easy to generate nothing to ambient enviroment
Line interference, the comparison that every country is used for control is stringent, and price is expensive.Infrared sensor, by receiving surrounding
The near infrared ray that object with heat issues carries out the identification of mobile object.Infrared sensor will not be to ambient enviroment
Any adverse effect is caused, and cost is very low.
LED light with infrared sensor has been widely used for passageway and outbound illumination at present, is needing to illuminate
When, the LED light all light with infrared sensor, and when not needing illumination, have infrared sensor
LED light extinguish or keep glimmer state, thus reach energy-efficient effect.
Since the detection range range of infrared sensor is closer, would generally be arranged by traveling sequence in illumination region
Multiple LED light with infrared sensor, and each LED light with infrared sensor is that single lamp works independently,
I.e. some LED light with infrared sensor detects nearby when having mobile object activity, the LED light all light, and nearby its
He will be detected with mobile object activity Shi Caihui all light until its own at the LED light with infrared sensor.Thus work as shifting
Animal body speed than it is very fast when, such as automobile inbound/outbound process often becomes in previous LED light because the movement speed of automobile is very fast
At the time of bright, the position of this LED light has almost been already expired in automobile, and does not arrive the investigative range of next LED lamp, next LED
Lamp is gone to most by force not yet, and thus the illuminating effect of the LED light with infrared sensor is difficult to meet actual illumination demand.
Summary of the invention
Technical problem to be solved by the invention is to provide it is a kind of can satisfy currently practical lighting demand with infrared shifting
The LED lamp circuit of dynamic sensor.
The technical scheme of the invention to solve the technical problem is: a kind of 1. LED with infrared sensor
Circuit for lamp, it is characterised in that including rectification circuit, constant-current control circuit, LED light module, regulator rectifier circuit, MCU control
Circuit, infrared sensor, infrared receiving module and infrared transmitting circuit；The rectification circuit and city's electrical connection, by city
The alternating voltage of electricity is converted to direct voltage output, and the constant-current control circuit is connected with the rectification circuit, will be described
Rectification circuit output DC voltage be converted to two paths of signals output, wherein all the way signal be low-voltage ac voltage, another way
Signal is DC current, and the regulator rectifier circuit is connected with the constant-current control circuit, accesses the current constant control
The low-voltage ac voltage of circuit output, the regulator rectifier circuit convert the low-voltage ac voltage of access by rectifying and voltage-stabilizing
Afterwards output DC voltage be the infrared sensor, the infrared receiving module, the infrared transmitting circuit with
And the MCU control circuit provides operating voltage；The LED light module is connected with the constant-current control circuit,
It shines under the direct current driven of the described constant-current control circuit output, the LED light module has highlighted state and low
Bright state, the DC current of the constant-current control circuit output are set with minimum value and maximum value, the current constant control electricity
The DC current of road output is output-controlled in the MCU control circuit also according to maximum value according to minimum value output, works as institute
When the DC current for the constant-current control circuit output stated is exported according to minimum value, the LED light module is in low bright state,
When the DC current that the constant-current control circuit exports is exported according to maximum value, the LED light module is in highlighted
State；The infrared receiving module real-time reception to external infrared signal, when the infrared receiving module receive it is red
When outer optical signal, generates corresponding infrared control signal and be sent to the MCU control circuit, the infrared sensor
Whether real-time detection nearby has mobile object process, and generates corresponding detection signal and be sent to the MCU control circuit；Institute
The control process for the MCU control circuit stated is divided into infrared control stage, mobile object control stage and normal control stage, described
MCU control circuit in be set with infrared control stage duration and mobile object control stage duration；
When the MCU control circuit both do not received infrared control signal and also do not receive nearby there are mobile objects
When detecting signal, the MCU control circuit is in the normal control stage, and in the normal control stage, the MCU controls electricity
The control constant-current control circuit in road is exported according to the minimum value of DC current, and the LED light module shines most at this time
It is weak, it is in low bright state；
When the MCU control circuit receives infrared control signal, the MCU control circuit enters infrared control rank
Section, in the infrared control stage, the MCU control circuit controls the constant-current control circuit according to the maximum value of DC current
Output, the LED light module shines most strong at this time, is in highlighted state；
When the MCU control circuit receives nearby there are the detection signal of mobile object, the MCU control circuit into
Enter the mobile object control stage, controls stage, the MCU control circuit control constant-current control circuit in mobile object
It exporting according to the maximum value of DC current, the LED light module shines most strong at this time, it is in highlighted state, at the same time,
The MCU control circuit also drives the infrared transmitting circuit externally to emit infrared signal；
When the MCU control circuit is in the infrared control stage, if all do not received at the end of the infrared control stage
It is described at the end of the infrared control stage to other infrared control signals or nearby there are the detection signal of mobile object
MCU control circuit again switches to the normal control stage, if receiving other infrared controls letter before the infrared control stage terminates
Number, the MCU control circuit restarts an infrared control stage, if near receiving before the infrared control stage terminates
There are the detection signal of mobile object, the MCU control circuit restarts a mobile object control stage；
When the MCU control circuit is in the mobile object control stage, if terminated in the mobile object control stage
Shi Douwei receives other infrared control signals or nearby there are the detection signals of mobile object, terminates in the mobile object control stage
When, the MCU control circuit again switches to the normal control stage, if receiving it before the mobile object control stage terminates
His infrared control signal, the MCU control circuit restart an infrared control stage, if controlling rank in mobile object
Section is received nearby before terminating there are the detection signal of mobile object, and the MCU control circuit restarts a mobile object
The control stage.
The rectification circuit has firewire input terminal, zero curve input, output end and ground terminal, the current constant control
Circuit has input terminal, current output terminal, voltage output end, control terminal and ground terminal, and the LED light module has anode
And cathode, the regulator rectifier circuit have input, output end and ground terminal, the infrared sensor has just
Pole, cathode and output end, the infrared receiving module include the first infrared remote receiver and the second infrared remote receiver, and described the
One infrared remote receiver and second infrared remote receiver are respectively provided with anode, cathode and output end, the infrared emission electricity
Road has anode, cathode and control terminal, and the MCU control circuit has anode, cathode, the first signal input part, the second letter
Number input terminal, third signal input part, the first control terminal and the second control terminal, the firewire input terminal connection of the rectification circuit
The firewire of alternating current, the zero curve of the zero curve input terminal connection alternating current of the rectification circuit, the output end of the rectification circuit, institute
The anode connection of the input terminal for the constant-current control circuit stated and the LED light module, the electricity of the constant-current control circuit
Stream output end is connected with the cathode of the LED light module, the voltage output end of the constant-current control circuit and described
The input terminal of regulator rectifier circuit connects, and the output end of the regulator rectifier circuit, the infrared sensor are just
Pole, first infrared remote receiver positive, described the second infrared remote receiver positive, described infrared transmitting circuit
The anode connection of positive and described MCU control circuit, the first signal input part of the MCU control circuit and described red
The output end of outer movable sensor connects, and the second signal input terminal of the MCU control circuit and described first infrared connects
Receive the output end connection of device, the third signal input part of the MCU control circuit and second infrared remote receiver it is defeated
Outlet connection, the first control terminal of the MCU control circuit is connected with the control terminal of the constant-current control circuit, described
Second control terminal of MCU control circuit is connected with the control terminal of the infrared transmitting circuit, the ground connection of the rectification circuit
End, the ground terminal of the constant-current control circuit, the ground terminal of the regulator rectifier circuit, the infrared sensor
Cathode, the cathode of first infrared remote receiver, the cathode of second infrared remote receiver, the infrared emission electricity
The cathode on road is connected with the cathode of the MCU control circuit, and the constant-current control circuit is permanent using type switching power decompression
Flow control circuit.In the circuit structure, constant-current control circuit is depressured constant-current control circuit, MCU control electricity using type switching power
Road can pass through output pwm control signal and control the defeated of constant-current control circuit by way of controlling PWM control signal duty cycle
Size of current out, control mode is simple, and infrared receiving module receives infrared signal with directionality, passes through setting two
The receiving plane direction of infrared remote receiver can differentiate the LED light hair positioned at left side or right side or front or rear nearby
Infrared signal out.
The constant-current control circuit includes first resistor, second resistance, 3rd resistor, the 4th resistance, first capacitor,
Two capacitors, third capacitor, first diode, the first transformer and the first chip, the first capacitor and third electricity
Holding is electrolytic capacitor, and the first diode is high-frequency rectification diode, and first chip model is MT7816, institute
The first transformer stated has primary coil and secondary coil, and the 2nd foot of first chip is the current constant control electricity
3rd foot of the control terminal on road, first chip is connected with one end of the 3rd resistor, and the of first chip
7 feet, the 8th foot are connected with one end of the second resistance, and the one of the 4th foot of first chip, the first resistor
End is connected with one end of second capacitor, and the 5th foot of first chip, the 6th foot, the first diode are just
Pole is connected with one end of the primary coil of first transformer, the other end of the primary coil of first transformer,
One end of 4th resistance is connected with the cathode of the third capacitor and its connecting pin is the constant-current control circuit
Current output terminal；One end of the secondary coil of first transformer is the voltage output of the constant-current control circuit
End；The cathode, described of the other end of positive, described first resistor of the first capacitor, the first diode
The anode of the other end of 4th resistance and the third capacitor connects and its connecting pin is the input terminal of constant-current control circuit；Institute
The other end of the secondary coil for the first transformer stated, the 1st foot of first chip, the first capacitor cathode,
The other end of second capacitor, the other end of the second resistance is connected with the other end of the 3rd resistor and it
Connecting pin is the ground terminal of the constant-current control circuit.
The regulator rectifier circuit includes the second diode, the 4th capacitor, the 5th capacitor and the second chip, and described the
Two diodes are high-frequency rectification diode, and the 4th capacitor is electrolytic capacitor, and second chip is three-terminal voltage-stabilizing collection
At circuit, there is input pin, output pin and grounding leg, the just extremely described regulator rectifier circuit of second diode
The input pin of input terminal, the cathode of second diode, the anode of the 4th capacitor and second chip connects
It connects, the output pin of second chip is connected with one end of the 5th capacitor and its connecting pin is the rectifying and voltage-stabilizing
The output end of circuit, cathode, the other end of the 5th capacitor and the connecing for second chip of the 4th capacitor
Lower margin connection and its connecting pin are the ground terminal of the regulator rectifier circuit.
The infrared transmitting circuit includes the first infraluminescence pipe, the second infraluminescence pipe, the 5th resistance, the 6th electricity
Resistance, the 7th resistance and the first NMOS tube, the anode of the just extremely described infrared transmitting circuit of the first infraluminescence pipe,
The anode connection of the cathode of the first infraluminescence pipe and the second infraluminescence pipe, second infraluminescence
The cathode of pipe is connected with one end of the 7th resistance, the other end of the 7th resistance and first NMOS tube
Drain electrode connection, the grid of first NMOS tube connects with one end of the 5th resistance, the other end of the 5th resistance
It is connected with one end of the 6th resistance and its connecting pin is the control terminal of the infrared transmitting circuit, the 6th electricity
The other end of resistance is connected with the source electrode of first NMOS tube and its connecting pin is the ground terminal of the infrared transmitting circuit.
The rectification circuit is full bridge rectifier bridge heap, and the 1st foot of the full bridge rectifier bridge heap is the rectified current
The firewire input terminal on road, the 3rd foot of the full bridge rectifier bridge heap are the zero curve input terminal of the rectification circuit, and described is complete
2nd foot of bridge rectifier bridge stack is the output end of the rectification circuit, and the 4th foot of the full bridge rectifier bridge heap is described whole
The ground terminal of current circuit.
Compared with the prior art, the advantages of the present invention are as follows pass through setting infrared receiving module real-time reception to the red of outside
Outer optical signal generates corresponding infrared control signal and is sent to MCU control electricity when infrared receiving module receives infrared signal
Whether road, infrared sensor real-time detection nearby have mobile object process, and generate corresponding detection signal and be sent to MCU
Control circuit, the control process of MCU control circuit are divided into infrared control stage, mobile object control stage and normal control rank
Section, infrared control stage duration and mobile object control stage duration are set in MCU control circuit, the present invention is detecting shifting
After the infrared signal for the LED light transmitting that animal body or receive closes on, LED light module can be made to enter highlighted state
Realize illumination, LED lamp circuit of the invention can be interrelated by infrared receiving module and infrared transmission module, infrared signal
Ambient enviroment will not be interfered, thus carry out multiple LED light of the invention of some illumination region according to lighting demand
Balanced adjustment can guarantee that movement speed is transferred object faster and adequately illuminated on the basis of energy-efficient, easy to remove
The traveling of object meets currently practical lighting demand.
Detailed description of the invention
Fig. 1 is the structural block diagram of the LED lamp circuit of the invention with infrared sensor；
Fig. 2 is the circuit diagram of the LED lamp circuit of the invention with infrared sensor.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment: as shown in Figure 1, a kind of LED lamp circuit with infrared sensor, including rectification circuit, constant current control
Circuit processed, LED light module, regulator rectifier circuit, MCU control circuit, infrared sensor, infrared receiving module and infrared
Transmit circuit；Rectification circuit and city's electrical connection, are converted to direct voltage output for the alternating voltage of alternating current, constant-current control circuit and
The DC voltage that rectification circuit exports is converted to two paths of signals output by rectification circuit connection, wherein signal is low pressure friendship all the way
Galvanic electricity pressure, another way signal are DC current, and regulator rectifier circuit is connected with constant-current control circuit, and access constant-current control circuit is defeated
The low-voltage ac voltage of access is exported direct current after rectifying and voltage-stabilizing is converted by low-voltage ac voltage out, regulator rectifier circuit
Pressure provides operating voltage for infrared sensor, infrared receiving module, infrared transmitting circuit and MCU control circuit；LED
Light emitting module is connected with constant-current control circuit, is shone under the direct current driven of constant-current control circuit output, LED light module
With highlighted state and low bright state, the DC current of constant-current control circuit output is set with minimum value and maximum value, constant current control
The DC current of circuit output processed is output-controlled in MCU control circuit also according to maximum value according to minimum value output, works as constant current
When the DC current of control circuit output is exported according to minimum value, LED light module is in low bright state, works as constant-current control circuit
When the DC current of output is exported according to maximum value, LED light module is in highlighted state；Infrared receiving module real-time reception
To external infrared signal, when infrared receiving module receives infrared signal, generates corresponding infrared control signal and send
To MCU control circuit, whether infrared sensor real-time detection nearby has mobile object process, and generates corresponding detection letter
Number it is sent to MCU control circuit；The control process of MCU control circuit be divided into the infrared control stage, mobile object control the stage and
The normal control stage is set with infrared control stage duration and mobile object control stage duration in MCU control circuit；Work as MCU
Control circuit had not both received infrared control signal or had not received nearby there are when the detection signal of mobile object, and MCU is controlled
Circuit is in the normal control stage, and in the normal control stage, MCU control circuit controls constant-current control circuit according to DC current
Minimum value output, LED light module shines most weak at this time, is in low bright state；When MCU control circuit receives infrared control signal
When, MCU control circuit enters the infrared control stage, in the infrared control stage, MCU control circuit control constant-current control circuit according to
The maximum value of DC current exports, and LED light module shines most strong at this time, is in highlighted state；When MCU control circuit receive it is attached
Closely there are the detection signal of mobile object, MCU control circuit enters the mobile object control stage, controls the stage in mobile object,
MCU control circuit controls constant-current control circuit and exports according to the maximum value of DC current, and LED light module shines most strong at this time,
In highlighted state, at the same time, MCU control circuit also drives infrared transmitting circuit externally to emit infrared signal；When MCU is controlled
When circuit processed is in the infrared control stage, if all not receiving other infrared control signals or attached at the end of the infrared control stage
Close there are the detection signals of mobile object, and at the end of the infrared control stage, MCU control circuit again switches to normal control rank
Section, if receiving other infrared control signals before the infrared control stage terminates, MCU control circuit restarts an infrared control
In the stage processed, if received before the infrared control stage terminates nearby there are the detection signal of mobile object, MCU control circuit is again
Start a mobile object control stage；When MCU control circuit is in the mobile object control stage, if in mobile object control
Other infrared control signals are not all received at the end of stage processed or nearby there are the detection signals of mobile object, in mobile object control
At the end of stage processed, MCU control circuit again switches to the normal control stage, if received before the mobile object control stage terminates
To other infrared control signals, MCU control circuit restarts an infrared control stage, if controlling the stage in mobile object
It is received before end nearby there are the detection signal of mobile object, MCU control circuit restarts a mobile object control stage.
In the present embodiment, rectification circuit has firewire input terminal, zero curve input, output end and ground terminal, current constant control
Circuit has input terminal, current output terminal, voltage output end, control terminal and ground terminal, and LED light module has positive and negative
Pole, regulator rectifier circuit have input, output end and ground terminal, and infrared sensor has anode, cathode and output end,
Infrared receiving module includes the first infrared remote receiver and the second infrared remote receiver, the first infrared remote receiver and the second infrared remote receiver
It is respectively provided with anode, cathode and output end, there is infrared transmitting circuit anode, cathode and control terminal, MCU control circuit to have
Anode, cathode, the first signal input part, second signal input terminal, third signal input part, the first control terminal and the second control
End, the firewire of the firewire input terminal connection alternating current of rectification circuit, the zero curve of the zero curve input terminal connection alternating current of rectification circuit, rectification
The anode connection of the output end of circuit, the input terminal of constant-current control circuit and LED light module, the electric current of constant-current control circuit are defeated
Outlet is connected with the cathode of LED light module, and the voltage output end of constant-current control circuit and the input terminal of regulator rectifier circuit connect
It connects, the output end of regulator rectifier circuit, the anode of infrared sensor, the anode of the first infrared remote receiver, second infrared connect
The anode connection of the anode of device, the anode of infrared transmitting circuit and MCU control circuit is received, the first signal of MCU control circuit is defeated
Enter end to connect with the output end of infrared sensor, the second signal input terminal and the first infrared remote receiver of MCU control circuit
Output end connection, the output end connection of the third signal input part of MCU control circuit and the second infrared remote receiver, MCU control
First control terminal of circuit is connected with the control terminal of constant-current control circuit, the second control terminal and infrared emission of MCU control circuit
The control terminal of circuit connects, the ground terminal of rectification circuit, the ground terminal of constant-current control circuit, regulator rectifier circuit ground terminal,
The cathode of infrared sensor, the cathode of the first infrared remote receiver, the cathode of the second infrared remote receiver, infrared transmitting circuit
Cathode is connected with the cathode of MCU control circuit, and constant-current control circuit is depressured constant-current control circuit using type switching power.
As shown in Fig. 2, constant-current control circuit includes first resistor R1, second resistance R2,3rd resistor in the present embodiment
R3, the 4th resistance R4, first capacitor C1, the second capacitor C2, third capacitor C3, first diode D1, the first transformer T1 and
One chip U1, first capacitor C1 and third capacitor C3 are electrolytic capacitor, and first diode D1 is high-frequency rectification diode, the first core
Piece U1 model MT7816, the first transformer T1 have primary coil and secondary coil, and the 2nd foot of the first chip U1 is constant current control
3rd foot of the control terminal of circuit processed, the first chip U1 is connected with one end of 3rd resistor R3, the 7th foot of the first chip U1, the 8th
Foot is connected with one end of second resistance R2, the 4th foot of the first chip U1, one end of first resistor R1 and the second capacitor C2 one end
Connection, the 5th foot of the first chip U1, the 6th foot, the anode of first diode D1 and the first transformer T1 primary coil one
End connection, the other end of the primary coil of the first transformer T1, one end of the 4th resistance R4 are connected with the cathode of third capacitor C3
And its connecting pin is the current output terminal of constant-current control circuit；One end of the secondary coil of first transformer T1 is current constant control electricity
The voltage output end on road；The anode of first capacitor C1, the other end of first resistor R1, the cathode of first diode D1, the 4th electricity
It hinders the anode connection of the other end and third capacitor C3 of R4 and its connecting pin is the input terminal of constant-current control circuit；First transformer
The other end of the secondary coil of T1, the 1st foot of the first chip U1, the cathode of first capacitor C1, the other end of the second capacitor C2,
The other end of two resistance R2 is connected with the other end of 3rd resistor R3 and its connecting pin is the ground terminal of constant-current control circuit.
As shown in Fig. 2, regulator rectifier circuit includes the second diode D2, the 4th capacitor C4, the 5th capacitor in the present embodiment
C5 and the second chip U2, the second diode D2 is high-frequency rectification diode, and the 4th capacitor C4 is electrolytic capacitor, and the second chip U2 is
Circuit of three-terminal voltage-stabilizing integrated, has input pin, output pin and a grounding leg, the just extremely regulator rectifier circuit of the second diode D2
Input terminal, the input pin connection of the cathode of the second diode D2, the anode of the 4th capacitor C4 and the second chip U2, the second chip
The connection of one end of the output pin of U2 and the 5th capacitor C5 and its connecting pin are the output end of regulator rectifier circuit, the 4th capacitor C4's
The grounding leg of cathode, the other end of the 5th capacitor C5 and the second chip U2 connects and its connecting pin is the ground connection of regulator rectifier circuit
End.
As shown in Fig. 2, infrared transmitting circuit includes the first infraluminescence pipe L1, the second infraluminescence pipe in the present embodiment
L2, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7 and the first NMOS tube N1, the first infraluminescence pipe L1's is just extremely red
The anode connection of the anode of outer transmit circuit, the cathode of the first infraluminescence pipe L1 and the second infraluminescence pipe L2, second is infrared
The drain electrode of the connection of one end of the cathode of luminous tube L2 and the 7th resistance R7, the other end and the first NMOS tube N1 of the 7th resistance R7 connects
It connects, one end connection of the grid of the first NMOS tube N1 and the 5th resistance R5, the other end of the 5th resistance R5 and the 6th resistance R6's
One end connection and its connecting pin are the control terminal of infrared transmitting circuit, the source of the other end of the 6th resistance R6 and the first NMOS tube N1
Pole connection and its connecting pin are the ground terminal of infrared transmitting circuit.
As shown in Fig. 2, rectification circuit is full bridge rectifier bridge heap Db, the 1st foot of full bridge rectifier bridge heap Db in the present embodiment
For the firewire input terminal of rectification circuit, the 3rd foot of full bridge rectifier bridge heap Db is the zero curve input terminal of rectification circuit, full bridge rectifier bridge
The 2nd foot of heap Db is the output end of rectification circuit, and the 4th foot of full bridge rectifier bridge heap Db is the ground terminal of rectification circuit.
In the present embodiment, MCU control circuit realizes that single-chip microcontroller U3 has positive pole using current general single-chip microcontroller U3
Foot and power cathode foot, anode of the positive pole foot as MCU control circuit, power cathode foot is as the negative of MCU control circuit
Pole；The foot of three input functions, respectively the first signal input part, second signal input terminal and third signal is arranged in single-chip microcontroller U3
Two output function feet, respectively the first control terminal and the second control terminal are arranged in input terminal.
In the present embodiment, infrared sensor M1 is realized using the mature circuit in current techniques field, what is received
It is changed into the infrared control signal of low and high level signal form by the infrared signal that infrared transmitting circuit issues.First infrared connects
Device M2 and the second infrared remote receiver M2 is received using the mature infrared receiving circuit in current techniques field to realize.
Claims (6)
1. a kind of LED lamp circuit with infrared sensor, it is characterised in that including rectification circuit, constant-current control circuit, LED
Light emitting module, regulator rectifier circuit, MCU control circuit, infrared sensor, infrared receiving module and infrared transmitting circuit；
The alternating voltage of alternating current is converted to direct voltage output, the current constant control electricity by the rectification circuit and city's electrical connection
Road is connected with the rectification circuit, and the DC voltage that the rectification circuit exports is converted to two paths of signals output, wherein
Signal is low-voltage ac voltage all the way, and another way signal is DC current, the regulator rectifier circuit and the constant current control
Circuit connection processed, accesses the low-voltage ac voltage of the constant-current control circuit output, and the regulator rectifier circuit will access
Low-voltage ac voltage DC voltage is exported after rectifying and voltage-stabilizing is converted as the infrared sensor, described infrared
Receiving module, the infrared transmitting circuit and the MCU control circuit provide operating voltage；The luminous mould of the LED
Block is connected with the constant-current control circuit, is shone under the direct current driven that the constant-current control circuit exports, described
LED light module there is highlighted state and low bright state, the DC current of the described constant-current control circuit output is set with most
Small value and maximum value, the DC current of the constant-current control circuit output is exported according to minimum value to be exported also according to maximum value
It is controlled by the MCU control circuit, when the DC current that the constant-current control circuit exports is exported according to minimum value, institute
The LED light module stated is in low bright state, when the DC current that the constant-current control circuit exports is exported according to maximum value
When, the LED light module is in highlighted state；The infrared receiving module real-time reception is believed to external infrared light
Number, when the infrared receiving module receives infrared signal, generates corresponding infrared control signal and be sent to the MCU
Whether control circuit, the infrared sensor real-time detection nearby have mobile object process, and generate corresponding detection
Signal is sent to the MCU control circuit；The control process of the MCU control circuit is divided into infrared control stage, movement
Object controls stage and normal control stage, is set with infrared control stage duration and motive objects in the MCU control circuit
Body controls stage duration；
When the MCU control circuit both do not received infrared control signal and also do not receive nearby there are the detections of mobile object
When signal, the MCU control circuit is in the normal control stage, in the normal control stage, the MCU control circuit control
The constant-current control circuit is exported according to the minimum value of DC current, and the LED light module shines most weak at this time, is in
Low bright state；
When the MCU control circuit receives infrared control signal, the MCU control circuit enters the infrared control stage,
In the infrared control stage, the MCU control circuit control constant-current control circuit is defeated according to the maximum value of DC current
Out, the LED light module described at this time shines most strong, is in highlighted state；
When the MCU control circuit receives nearby there are the detection signal of mobile object, the MCU control circuit enters shifting
Animal body controls the stage, controls the stage in mobile object, the described MCU control circuit control constant-current control circuit according to
The maximum value of DC current exports, and the LED light module shines most strong at this time, is in highlighted state, at the same time, described
MCU control circuit also drive the infrared transmitting circuit externally to emit infrared signal；
When the MCU control circuit is in the infrared control stage, if all not receiving it at the end of the infrared control stage
His infrared control signal or nearby there are the detection signals of mobile object, at the end of the infrared control stage, the MCU control
Circuit again switches to the normal control stage, described if receiving other infrared control signals before the infrared control stage terminates
MCU control circuit restart an infrared control stage, if received before the infrared control stage terminates nearby exist move
The detection signal of animal body, the MCU control circuit restart a mobile object control stage；
When the MCU control circuit is in the mobile object control stage, if at the end of the mobile object control stage all
Other infrared control signals are not received or nearby there are the detection signals of mobile object, at the end of the mobile object control stage,
The MCU control circuit again switches to the normal control stage, if receiving other before the mobile object control stage terminates
Infrared control signal, the MCU control circuit restart an infrared control stage, if controlling the stage in mobile object
It is received before end nearby there are the detection signal of mobile object, the MCU control circuit restarts a mobile object control
Stage processed.
2. a kind of LED lamp circuit with infrared sensor according to claim 1, it is characterised in that the rectification
Circuit has firewire input terminal, zero curve input, output end and ground terminal, and the constant-current control circuit has input terminal, electricity
Output end, voltage output end, control terminal and ground terminal are flowed, the LED light module has anode and cathode, the rectification
Voltage regulator circuit has input, output end and ground terminal, and the infrared sensor has anode, cathode and output end,
The infrared receiving module includes the first infrared remote receiver and the second infrared remote receiver, first infrared remote receiver and institute
The second infrared remote receiver stated is respectively provided with anode, cathode and output end, the infrared transmitting circuit have anode, cathode and
Control terminal, the MCU control circuit have anode, cathode, the first signal input part, second signal input terminal, third signal
Input terminal, the first control terminal and the second control terminal, the firewire of the firewire input terminal connection alternating current of the rectification circuit are described
The zero curve of the zero curve input terminal connection alternating current of rectification circuit, the output end of the rectification circuit, the constant-current control circuit
Input terminal and the LED light module anode connection, the current output terminal of the constant-current control circuit and described
The cathode of LED light module connects, the voltage output end of the constant-current control circuit and the regulator rectifier circuit it is defeated
Enter end connection, the output end of the regulator rectifier circuit, positive, described first of the infrared sensor are infrared
The anode of positive, described infrared transmitting circuit of the second positive, described infrared remote receiver of receiver and MCU control
The anode connection of circuit processed, the first signal input part of the MCU control circuit and the infrared sensor it is defeated
Outlet connection, the second signal input terminal of the MCU control circuit are connected with the output end of first infrared remote receiver,
The third signal input part of the MCU control circuit is connected with the output end of second infrared remote receiver, the MCU
First control terminal of control circuit is connected with the control terminal of the constant-current control circuit, and the second of the MCU control circuit
Control terminal is connected with the control terminal of the infrared transmitting circuit, the ground terminal of the rectification circuit, the current constant control
The ground terminal of circuit, the ground terminal of the regulator rectifier circuit, the cathode of the infrared sensor, described first
The cathode of infrared remote receiver, the cathode of second infrared remote receiver, the cathode of the infrared transmitting circuit and described
The cathode of MCU control circuit connects, and the constant-current control circuit is depressured constant-current control circuit using type switching power.
3. a kind of LED lamp circuit with infrared sensor according to claim 2, it is characterised in that the constant current
Control circuit includes first resistor, second resistance, 3rd resistor, the 4th resistance, first capacitor, the second capacitor, third capacitor,
One diode, the first transformer and the first chip, the first capacitor and the third capacitor are electrolytic capacitor, described
First diode is high-frequency rectification diode, and first chip model is MT7816, and first transformer has just
Grade coil and secondary coil, the 2nd foot of first chip are the control terminal of the constant-current control circuit, described first
3rd foot of chip is connected with one end of the 3rd resistor, the 7th foot, the 8th foot and described second of first chip
One end of resistance connects, and the one of the 4th foot of first chip, one end of the first resistor and second capacitor
End connection, the 5th foot of first chip, the 6th foot, the anode of the first diode and first transformer
One end of primary coil connects, the other end of the primary coil of first transformer, the 4th resistance one end and
The cathode of the third capacitor connects and its connecting pin is the current output terminal of the constant-current control circuit；Described first
One end of the secondary coil of transformer is the voltage output end of the constant-current control circuit；The anode of the first capacitor,
The other end of the first resistor, the cathode of the first diode, the other end of the 4th resistance and described
The anode of third capacitor connects and its connecting pin is the input terminal of constant-current control circuit；The secondary coil of first transformer
The other end, the 1st foot of first chip, the cathode of the first capacitor, the other end of second capacitor, institute
The other end for the second resistance stated is connected with the other end of the 3rd resistor and its connecting pin is the current constant control electricity
The ground terminal on road.
4. a kind of LED lamp circuit with infrared sensor according to claim 2, it is characterised in that the rectification
Voltage regulator circuit includes the second diode, the 4th capacitor, the 5th capacitor and the second chip, and second diode is high-frequency rectification
Diode, the 4th capacitor be electrolytic capacitor, second chip be circuit of three-terminal voltage-stabilizing integrated, have input pin,
Output pin and grounding leg, the input terminal of the just extremely described regulator rectifier circuit of second diode, described second
The cathode of diode, the 4th capacitor anode connected with the input pin of second chip, second chip
Output pin connected with one end of the 5th capacitor and its connecting pin be the regulator rectifier circuit output end, it is described
The cathode of the 4th capacitor, the other end of the 5th capacitor is connected with the grounding leg of second chip and its connecting pin
For the ground terminal of the regulator rectifier circuit.
5. a kind of LED lamp circuit with infrared sensor according to claim 2, it is characterised in that described is infrared
Transmit circuit includes the first infraluminescence pipe, the second infraluminescence pipe, the 5th resistance, the 6th resistance, the 7th resistance and first
NMOS tube, the anode of the just extremely described infrared transmitting circuit of the first infraluminescence pipe, the infrared hair of described first
The anode connection of the cathode of light pipe and the second infraluminescence pipe, the cathode of the second infraluminescence pipe and described
One end of 7th resistance connects, and the other end of the 7th resistance is connected with the drain electrode of first NMOS tube, described
The grid of first NMOS tube is connected with one end of the 5th resistance, the other end of the 5th resistance and the 6th resistance
One end connection and its connecting pin are the control terminal of the infrared transmitting circuit, the other end of the 6th resistance and described
The source electrode of first NMOS tube connects and its connecting pin is the ground terminal of the infrared transmitting circuit.
6. a kind of LED lamp circuit with infrared sensor according to claim 2, it is characterised in that the rectification
Circuit is full bridge rectifier bridge heap, and the 1st foot of the full bridge rectifier bridge heap is the firewire input terminal of the rectification circuit, described
Full bridge rectifier bridge heap the 3rd foot be the rectification circuit zero curve input terminal, the 2nd foot of the full bridge rectifier bridge heap is
The output end of the rectification circuit, the 4th foot of the full bridge rectifier bridge heap are the ground terminal of the rectification circuit.
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| CN201910601561.XA CN110381632B (en) | 2019-07-04 | 2019-07-04 | LED lamp circuit with infrared mobile sensor |
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| CN201910601561.XA CN110381632B (en) | 2019-07-04 | 2019-07-04 | LED lamp circuit with infrared mobile sensor |
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| CN110381632B CN110381632B (en) | 2021-06-11 |
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| CN114143933A (en) * | 2021-11-12 | 2022-03-04 | 广东东菱电源科技有限公司 | Circuit structure for realizing no afterglow after LED lamp is turned off |
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| Publication number | Publication date |
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| CN110381632B (en) | 2021-06-11 |
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