CN207382626U - LED light control system based on modulation of infrared rays - Google Patents
LED light control system based on modulation of infrared rays Download PDFInfo
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- CN207382626U CN207382626U CN201721240501.2U CN201721240501U CN207382626U CN 207382626 U CN207382626 U CN 207382626U CN 201721240501 U CN201721240501 U CN 201721240501U CN 207382626 U CN207382626 U CN 207382626U
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Abstract
The utility model provides a kind of LED light control system based on modulation of infrared rays, including main control module, power supply module, switch key module, infrared module and at least one LED light group, main control module includes main control chip and adjusts chip, main control chip is electrically connected with adjusting chip, main control chip exports IR modulated signals to infrared sending module, and infrared sending module sends IR modulated signals to measured target, infrared receiving module sends demodulated signal to main control chip, switch key module sends switch controlling signal to main control module, main control chip exports on-off signal or Regulate signal to adjusting chip, it adjusts chip and sends a control signal to LED light group.The LED light control system can effectively reduce the influence of interference source, make LED light brightness regulation continuous using the method for pulse width modulation, so as to change the brightness of LED light, can realize the smooth adjustment of LED light brightness.
Description
Technical field
The utility model is related to lighting technical fields, and system is controlled more particularly, to a kind of LED light based on modulation of infrared rays
System.
Background technology
LED light device is using light emitting diode as light-emitting component, and with energy conservation and environmental protection, consumption power is low, uses
The advantages that long lifespan, is widely used in various illumination occasions.
Traditional LED light device is by switch or by key control on the market at present, and user must be touched with hand
It touches switch or what button could realize LED light is turned on and off function.Not only convenience is poor for this operation, but also work efficiency
It is low.A kind of existing LED light device is the LED human body inductive lamps controlled by increasing infrared signal, this LED illumination dress
Put using traditional infrared transmitting tube and infrared receiving tube, simply solely emit infrared signal and receiving reflect it is red
Outside line signal, by sensing the infrared emanation of human body, detection light ambient condition carries out lamps and lanterns the operation such as to open and close.
But this kind of LED light device does not carry out frequency modulation(PFM) and further arbitration functions to infrared signal,
Therefore antijamming capability is very weak, for example, the interference of disturbing factor including natural light, indoor light change, emergent dry
The destabilizing factor of object and control system in itself etc. is disturbed, these disturbing factors can all cause LED lamp system infrared control part
False judgment, lighted so as to cause LED light unwanted when, close suddenly when needed, affect user's
Experience effect.
In addition, existing LED light device is to select the brightness set terraced by operating switch or by lower button
Degree, makes LED light that can only rest on fixed several luminance patterns, it is impossible to meet the brightness demand under all light conditions.
The content of the invention
The main purpose of the utility model, which is to provide one kind, can not only enhance antijamming capability and can realize that LED light is bright
A kind of LED light control system based on modulation of infrared rays of the smooth adjustment of degree.
To realize above-mentioned main purpose, a kind of LED light control system based on modulation of infrared rays provided by the utility model
System, including main control module, power supply module, switch key module, infrared module and at least one LED light group, power supply module
Electric energy is exported to main control module, infrared module and LED light group respectively, main control module includes main control chip and adjusts chip, main
Control chip is electrically connected with adjusting chip, and infrared module further includes infrared sending module and infrared receiving module, main control module
IR modulated signals are exported to infrared sending module, and infrared sending module sends IR modulated signals to measured target；It is infrared
Receiving module receives the reflected signal that IR modulated signals are formed after measured target reflection, and reflected signal is demodulated
After be converted into demodulated signal, and send demodulated signal to main control module；Switch key module sends switch controlling signal to master control
Module, main control chip output on-off signal or Regulate signal adjust chip and send a control signal to LED light group to chip is adjusted.
By said program as it can be seen that main control chip exports IR modulated signals to infrared sending module after frequency modulation(PFM),
Light is emitted in effective identification range by infrared sending module from inside to outside, so as to have the function that control signal, can effectively be dropped
The influence of low interference source.When there is barrier in effective identification range of infrared receiving module, the hair after barrier reflects
Penetrating signal will be received by infrared receiving module, and infrared receiving module after reflected signal progress dissection process to being converted into solving
It adjusts signal and exports to main control chip, main control chip can control the work(such as switch or the adjusting of LED light group by internal arithmetic
It can operate, the influence of interference source can be greatly reduced.
In addition, main control chip output pwm signal makes LED light brightness to chip is adjusted, using the method for pulse width modulation
It adjusts continuously, based on the square wave of fixed frequency, the tune of voltage is realized by changing high level and low level duty cycle
It is whole, so as to change the brightness of LED light, it can realize the smooth adjustment of LED light brightness.
One preferred scheme is that infrared sending module includes infrared light-emitting diode, the anode of infrared light-emitting diode
It is electrically connected with the pin of power supply module.
One preferred scheme is that infrared sending module further includes first crystal triode, the collection of first crystal triode
Electrode is electrically connected with the cathode of infrared light-emitting diode, and the base stage of first crystal triode is electrically connected with the pin of main control chip,
The emitter ground connection of first crystal triode.
As it can be seen that the infrared signal by being superimposed 38KHz on the basis of standard block, modulated frequency is 38KHz's
IR modulated signals, when in the base stage of transistor added with the IR modulated signals, transistor is in saturation conduction
State, also forward conduction works infrared light-emitting diode, and sends infrared light, which carries out carrier signal
Modulation forms modulation light and outwards emits, and can effectively avoid the interference of other light, the influence for the interference source that can effectively reduce.
Further embodiment is that infrared receiving module includes infrared receiving terminal, the feeder ear of infrared receiving terminal and confession
The pin electrical connection of electric module.
Further embodiment is that infrared receiving module includes the second transistor, the collector of the second transistor
It being electrically connected with the pin of main control chip, the base stage of the second transistor is electrically connected with the output terminal of infrared receiving terminal, and second
The emitter ground connection of transistor.
As it can be seen that infrared receiving module is used to receive the IR reflected signals after measured target reflection, and judge that this is red
Whether outside line signal meets modulation rule, while demodulated signal is converted into after being demodulated to the IR reflected signals, and will
The demodulated signal is sent to main control chip.
Further embodiment is, power supply module includes power module and regulator rectifier circuit, and power module is to rectifying and pressure-regulating
Circuit output electric energy.
Further embodiment is that regulator rectifier circuit includes rectification circuit, first order regulating circuit and second level pressure regulation
Circuit, rectification circuit send first voltage signal to first order regulating circuit, and first order regulating circuit turns first voltage signal
It changes second voltage signal into, and sends second voltage signal respectively to second level regulating circuit and LED light group；Second level pressure regulation electricity
Second voltage signal is converted into tertiary voltage signal by road, and sends tertiary voltage signal respectively to main control module and infrared ray mould
Block.
As it can be seen that power supply module includes power module and regulator rectifier circuit, power module will just by regulator rectifier circuit
Beginning voltage is adjusted to low-voltage DC, is respectively used to provide electric energy for main control module, infrared ray and LED light group.Further, since
The electric energy of main control portion and the load electricity consumption of LED light group are provided respectively by power supply module, therefore, can not only improve this
The stability of LED light control system can also extend the service life of product.
Description of the drawings
Fig. 1 is that the circuit of power supply module in LED light control system embodiment of the utility model based on modulation of infrared rays is former
Manage block diagram.
Fig. 2 is the schematic block circuit diagram of LED light control system embodiment of the utility model based on modulation of infrared rays.
Fig. 3 is the electricity of infrared sending module in LED light control system embodiment of the utility model based on modulation of infrared rays
Road schematic diagram.
Fig. 4 is the electricity of infrared receiving module in LED light control system embodiment of the utility model based on modulation of infrared rays
Road schematic diagram.
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Specific embodiment
LED light control system provided by the utility model based on modulation of infrared rays can be used for lighting system, such as be used in
On illuminating lamps and lanterns, it can also apply on the lamps and lanterns of specific use, such as LED human body inductive lamps, infrared induction lamp etc.
On lamps and lanterns.Also, the LED light control system based on modulation of infrared rays of the utility model can be utilized after frequency modulation(PFM)
Infrared signal emits exclusive infrared signal into effective range, so as to reduce the influence of interference source, and using arteries and veins
Rushing the method for width modulated makes LED light brightness regulation continuous, so as to change the brightness of LED light, can realize the flat of LED light brightness
It is sliding to adjust.
Referring to Fig. 1, the LED light control system based on modulation of infrared rays of the utility model includes main control module 7, power supply mould
Block 1, switch key module 40, infrared module 8 and at least one LED light group 50, power supply module 1 respectively to main control module 7,
Infrared module 8 and LED light group 50 export electric energy.Wherein, power supply module 1 includes power module 2, regulator rectifier circuit, voltage
Input terminal 4, regulator rectifier circuit includes rectification circuit 3, first order regulating circuit 5 and second level regulating circuit 6, when power supply mould
When block 2 is in running order, power module 2 provides voltage to voltage input end 4, and voltage input end 4 exports electric energy to rectified current
Road 3, rectification circuit 3 send first voltage signal to first order regulating circuit 5, and first order regulating circuit 5 is by first voltage signal
Second voltage signal is converted into, and sends second voltage signal respectively to second level regulating circuit 6 and LED light group 50, the first order
Regulating circuit 5 is powered to LED light group 50；Second voltage signal is converted into tertiary voltage signal by second level regulating circuit 6, and is divided
Not Fa Song tertiary voltage signal to main control module 7 and infrared module 8, second level regulating circuit 6 is to main control module 7 and infrared ray
Module 8 exports electric energy.As it can be seen that initial voltage is adjusted to low-voltage DC by regulator rectifier circuit by power module 2, by the
Second voltage regulation circuit 6 is powered to main control module 7 and infrared module 8, and first order regulating circuit 5 is powered to LED light group 50, so
The stability of the control system can not only be improved, the service life of product can also be extended.Certainly, power module 2 can be
It receives alternating current and the alternating current of 220V is converted into the power supply of low-voltage DC.For example, power module 2 can also be chargeable electricity
Pond when rechargeable battery not enough power supply, can charge to rechargeable battery by charger.
Referring to Fig. 2, main control module 7 includes main control chip 10 and adjusts chip 60, and infrared module 8 further includes infrared transmission
Module 20, infrared receiving module 30, the output IR modulated signals of main control chip 10 to infrared sending module 20, and infrared transmission mould
Block 20 sends IR modulated signals to measured target, and infrared receiving module 30 receives IR modulated signals after measured target reflection
The reflected signal of formation, and will emit signal it is demodulated after be converted into demodulated signal, and the output solution of infrared receiving module 30
Adjusting signal, switch key module 40 sends switch controlling signal to main control chip 10 to main control chip 10.Wherein, it is red referring to Fig. 3
Outer sending module 20 includes infrared light-emitting diode 21, the anode of infrared light-emitting diode 21 and the collection of first crystal triode Q1
Electrode is electrically connected, and infrared sending module 20 further includes first crystal triode Q1, the collector of first crystal triode Q1 with it is red
The cathode electrical connection of UV light-emitting diode 21, the base stage of first crystal triode Q1 are electrically connected with the pin of main control chip 10, the
The emitter ground connection of one transistor Q1.In the present embodiment, first crystal triode Q1 can be a PNP type triode.
Specifically, when power supply module 1 is in running order, power supply module 1 exports electric energy, master control core to main control chip 10
Piece 10 is the infrared tune of 38KHz available for modulating frequency by the infrared signal of the superposition 38KHz on the basis of standard block
Signal processed, then, main control chip 10 export the IR modulated signals after frequency modulation(PFM) to infrared sending module 20, when
When in the base stage of one transistor Q1 added with the IR modulated signals, first crystal triode Q1 is in saturation conduction state,
Also forward conduction works infrared light-emitting diode 21, it is seen then that the IR modulated signals are modulated light intensity to form modulation
Light outwards emits, that is, sends infrared light to the external world in effective identification range.Wherein, main control chip 10 passes through frequency modulation(PFM)
IR modulated signals are exported afterwards to infrared sending module 20, are emitted from inside to outside in effective identification range by infrared sending module 20
Light so as to have the function that control signal, can effectively avoid the interference of other light, so as to effectively reduce the shadow of interference source
It rings.Certainly, frequency modulation(PFM) is a kind of Instantaneous frequency variations with carrier wave to represent the modulation system of information, by using carrier wave
Different frequency expresses different information.
Referring to Fig. 4, infrared receiving module 30 further includes infrared receiving terminal 31, the feeder ear of infrared receiving terminal 31 and confession
The pin electrical connection of electric module 1, infrared receiving module 30 further include the second transistor Q2, the collection of the second transistor Q2
Electrode is electrically connected with the pin of main control chip 10, the base stage of the second transistor Q2 and the output terminal electricity of infrared receiving terminal 31
Connection, the emitter of the second transistor Q2 are grounded, and in the present embodiment, the second transistor Q2 can be a positive-negative-positive
Triode.
Therefore, when barrier occurs in effective identification range of infrared receiving module 30, barrier can be user
Body or any body part of user, will be by infrared receiving module 30 in the reflected signal after barrier reflection
It receives, and infrared receiving module 30 is to being converted into demodulated signal after reflected signal progress dissection process and being sent to master control
Chip 10, switch key module 40 send switch controlling signal to main control chip 10, and main control chip 10 can be with by internal arithmetic
The feature operations such as switch or the adjusting of LED light group 50 are controlled, the influence of interference source can be greatly reduced.Specifically, it is infrared to connect
It receives module 30 to be used to receive the infrared signal after measured target reflection, and judges whether the infrared signal meets modulation rule
Rule, while demodulated signal is converted into after being demodulated to the infrared signal, and the demodulated signal is sent to main control chip 10.
When effective identification range of infrared receiving module 30 barrier does not occur, that is, infrared receiving module 30 is not received by
During reflected signal after barrier reflection, switch key module 40 exports switch on and off signal to main control chip 10, leads to
The break-make that main control chip 10 controls LED light group 50 is crossed, it is achieved thereby that the conducting and closing of control LED light group 50.
In the present embodiment, main control chip 10 exports on-off signal or Regulate signal to chip 60 is adjusted, adjust chip 60 with
LED light group 50 is electrically connected, and is adjusted chip 60 and sent a control signal to LED light group 50, and it can be constant current source core to adjust chip 60
Piece, constant current source chip is used to receive the PWM Regulate signals transmitted by main control chip 10, and PWM Regulate signals are converted into controlling
Signal adjusts chip 60 and sends a control signal to LED light group 50, so as to control the switch of LED light group 50 or adjusting.Wherein, it is permanent
It can be LED constant current source driving chip to flow source chip.
Specifically, continued for some time in infrared receiving module 30 in effective identification range and constantly receive barrier
When the IR modulated signals reflected, switch that main control chip 10 will constantly get switch key module 40 and send
At this moment control signal, controls the LED light control system running this light modulation mould into a light-modulating mode by main control chip 10
In the case of under formula, main control chip 10 is based on the square wave of fixed frequency, by adjusting high level and low level duty cycle
It realizes the adjustment of voltage, and exports PWM Regulate signals to chip 60 is adjusted, adjust chip 60 for receiving main control chip 10
Transmitted PWM Regulate signals, and PWM Regulate signals are converted into control signal, and the control signal is sent to LED light group
50, at this moment, the rise for the current following duty cycle that LED light group 50 receives and raise so that the brightness of LED light group 50 is not
It is disconnected to increase, it can be seen that, 50 brightness regulation of LED light group can be made continuous by using the method for pulse width modulation, so as to change
The brightness of LED light.In addition, switch key module 40 includes at least one switch key, persistently stirred when switch key or
When persistently pressing, the LED light control system can also be controlled to enter above-mentioned light-modulating mode by main control chip 10.
Certainly, the adjusting of duty cycle can realize the brightness regulation of different stage according to the difference of selected main control chip,
Therefore the smooth adjustment of LED light brightness can be realized.Wherein, PWM（Pulse width modulation）It is adjusted according to the variation of respective loads
The biasing of LED light transistor gate processed or base stage, to realize switching power supply output transistor or transistor turns time
Change, this mode can be such that the output voltage of power supply is kept constant in operation conditions change.
Finally it is emphasized that the utility model is not limited to the above embodiment, such as the changing of LED light group quantity is led
Controlling selection of chip etc. should also be included in the protection domain of the utility model claims.
Claims (7)
1. the LED light control system based on modulation of infrared rays, including main control module, power supply module, switch key module, infrared ray
Module and at least one LED light group, the power supply module is respectively to the main control module, the infrared module and described
LED light group exports electric energy, it is characterised in that：
The main control module includes main control chip and adjusts chip, and the main control chip is electrically connected with the adjusting chip, described
Infrared module further includes infrared sending module and infrared receiving module, and the main control module exports IR modulated signals to institute
Infrared sending module is stated, and the infrared sending module sends the IR modulated signals to measured target；
The infrared receiving module receives the reflected signal that the IR modulated signals are formed after measured target reflection, and
And by the reflected signal it is demodulated after be converted into demodulated signal, and send the demodulated signal to the main control chip；
The switch key module sends switch controlling signal to the main control chip, the main control chip output on-off signal or
Regulate signal is to the adjusting chip, and the adjusting chip sends a control signal to the LED light group.
2. the LED light control system according to claim 1 based on modulation of infrared rays, it is characterised in that：
The infrared sending module includes infrared light-emitting diode, the anode of the infrared light-emitting diode and the power supply module
Pin electrical connection.
3. the LED light control system according to claim 2 based on modulation of infrared rays, it is characterised in that：
The infrared sending module further includes first crystal triode, the collector of the first crystal triode with it is described infrared
The cathode electrical connection of light emitting diode, the base stage of the first crystal triode are electrically connected with the pin of the main control chip, institute
State the emitter ground connection of first crystal triode.
4. the LED light control system according to claim 1 based on modulation of infrared rays, it is characterised in that：
The infrared receiving module includes infrared receiving terminal, the feeder ear of the infrared receiving terminal and the power supply module
Pin is electrically connected.
5. the LED light control system according to claim 4 based on modulation of infrared rays, it is characterised in that：
The infrared receiving module includes the second transistor, the collector of second transistor and the master control core
The pin electrical connection of piece, the base stage of second transistor is electrically connected with the output terminal of the infrared receiving terminal, described
The emitter ground connection of second transistor.
6. the LED light control system according to claim 1 or 2 based on modulation of infrared rays, it is characterised in that：
Power supply module includes power module and regulator rectifier circuit, and the power module exports electricity to the regulator rectifier circuit
Energy.
7. the LED light control system according to claim 6 based on modulation of infrared rays, it is characterised in that：
The regulator rectifier circuit includes rectification circuit, first order regulating circuit and second level regulating circuit, the rectified current
Road sends first voltage signal to the first order regulating circuit, and the first order regulating circuit turns the first voltage signal
It changes second voltage signal into, and sends the second voltage signal respectively to the second level regulating circuit and the LED light group；
The second voltage signal is converted into tertiary voltage signal by the second level regulating circuit, and sends the described 3rd respectively
Voltage signal is to the main control module and the infrared module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721240501.2U CN207382626U (en) | 2017-09-25 | 2017-09-25 | LED light control system based on modulation of infrared rays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721240501.2U CN207382626U (en) | 2017-09-25 | 2017-09-25 | LED light control system based on modulation of infrared rays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207382626U true CN207382626U (en) | 2018-05-18 |
Family
ID=62340923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721240501.2U Expired - Fee Related CN207382626U (en) | 2017-09-25 | 2017-09-25 | LED light control system based on modulation of infrared rays |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207382626U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109288662A (en) * | 2018-09-26 | 2019-02-01 | 秦皇岛嘎哈医疗电子仪器有限公司 | Feux rouges shock wave treatment instrument |
| CN110996452A (en) * | 2019-12-23 | 2020-04-10 | 中山市祥霖照明科技有限公司 | Gesture induction lamp and control circuit thereof |
-
2017
- 2017-09-25 CN CN201721240501.2U patent/CN207382626U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109288662A (en) * | 2018-09-26 | 2019-02-01 | 秦皇岛嘎哈医疗电子仪器有限公司 | Feux rouges shock wave treatment instrument |
| CN110996452A (en) * | 2019-12-23 | 2020-04-10 | 中山市祥霖照明科技有限公司 | Gesture induction lamp and control circuit thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180518 Termination date: 20200925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |