CN112437516B - Digital timing dimmer control circuit - Google Patents
Digital timing dimmer control circuit Download PDFInfo
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- CN112437516B CN112437516B CN202011422121.7A CN202011422121A CN112437516B CN 112437516 B CN112437516 B CN 112437516B CN 202011422121 A CN202011422121 A CN 202011422121A CN 112437516 B CN112437516 B CN 112437516B
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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
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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 belongs to the technical field of timers, and provides a digital timing dimmer control circuit, which comprises: the setting module is used for acquiring a setting signal of the timing time and an adjusting signal of the light intensity according to the requirement of a user; the control module is connected with the setting module and is used for generating corresponding control signals according to the timing time setting signals acquired by the setting module; the dimming control module is connected with the control module and is used for generating a corresponding dimming signal according to the control signal generated by the control module; and the dimming module is connected with the dimming control module and used for controlling the light intensity according to the dimming signal. The invention has the advantages that the on/off time of the lamp can be controlled by selecting a certain on/off time through the setting module according to the requirements of users, and the light intensity of the lamp can be set through the setting module.
Description
Technical Field
The invention relates to the technical field of timers, in particular to a digital timing dimmer control circuit.
Background
With the development of the application of the LED technology, the requirements of people on the application of the LED technology are more and more diversified, and intelligent lighting becomes a market hotspot, so that users hope to have a more intelligent light dimming mode.
For example, a chinese patent with publication number CN201854471U discloses an intelligent lighting power-saving dimmer, which comprises a core ac waveform feedback control circuit, a photoelectric coupling isolation circuit, a bus communication circuit and an Eprom programming information storage circuit, wherein the ac waveform feedback control circuit performs zero-crossing detection on 220V ac to control a thyristor and a timer, the 220V ac waveform turns off the thyristor from the zero-crossing moment from the peak to the trough, otherwise turns on the thyristor from the trough to the peak, and the loading of the timer value is realized by giving the singlechip according to the high-low level signal output by the thyristor. The photoelectric coupling isolation circuit effectively realizes the electrical isolation between the input end and the output end, when the input end is powered on, the light emitter emits light, the light emitter irradiates the light receiver, the light receiver receives the light and is conducted to generate photocurrent, and the photocurrent is output from the output end, so that the conversion of 'electricity-light-electricity' is realized, and the anti-interference performance and stability of the photoelectric coupling isolation circuit are improved.
The circuit structure of the Chinese patent is complex, and the requirement of continuous change of users cannot be met for timing and light adjustment.
Disclosure of Invention
The invention aims to provide a digital timing dimmer control circuit which is used for solving the problem of single timing and dimming control;
in order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a digital timing dimmer control circuit, comprising:
the setting module is used for acquiring a setting signal of the timing time and an adjusting signal of the light intensity according to the requirement of a user;
the control module is connected with the setting module and is used for generating corresponding control signals according to the timing time setting signals acquired by the setting module;
the dimming control module is connected with the control module and is used for generating a corresponding dimming signal according to the control signal generated by the control module;
and the dimming module is connected with the dimming control module and used for controlling the light intensity according to the dimming signal.
Further, the control module comprises a control chip U1, a reset circuit and a crystal oscillator circuit;
and a twenty-seventh pin and a twenty-eighth pin of the control chip U1 are both connected with the dimming control module.
Further, the setting module includes a key S1, a key S2, a key S3, a key S4, a key S5, a key S6, a key S7, a key S8, a key S9, and a capacitor C7;
one end of the key S7 is connected with a twentieth pin of the control chip U1, the other end of the key S7 is connected with one end of the key S4, the other end of the key S4 is connected with a twenty-first pin of the control chip U1, the other end of the key S7 is also connected with one end of the key S1, the other end of the key S7 is also connected with a twenty-third pin of the control chip U1, one end of the key S8 is connected with a twentieth pin of the control chip U1, the other end of the key S8 is connected with one end of the key S5, the other end of the key S5 is connected with a twenty-first pin of the control chip U1, the other end of the key S8 is also connected with one end of the key S2, the other end of the key S2 is connected with a twenty-second pin of the control chip U1, the other end of the key S9 is also connected with a twenty-fourth pin of the control chip U1, the other end of the key S9 is connected with one end of the control chip U6, the other end of the key S6 is connected with the twenty-first pin of the control chip U1, the other end of the key S9 is also connected with the twenty-second pin of the control chip U3, and the other end of the key S9 is connected with the twenty-second pin of the control chip U1.
Further, the dimming control module comprises a dimming control chip U3, a resistor R33, a resistor R43, a resistor R34, a diode D5, a capacitor C15, a resistor R35, a capacitor R36, a triode Q7, a triode Q8, a resistor R37 and an interface J4;
the negative pole of diode D5, the one end of electric capacity C15 and the VDD pin of dimming control chip all are connected with the one end of resistance R33, the positive pole ground connection of diode D5, the other end ground connection of electric capacity C15, the other end of resistance R33 is connected with the one end of resistance R43, the other end of resistance R43 is connected with one end ground connection of resistance R34, the one end that resistance R43 is connected with resistance R34 still is connected with the PA1 pin of dimming control chip U3, the one end that resistance R33 is connected with resistance R43 still connects 24V power, the PA1 pin of dimming control chip U3 still is connected with the twenty-seventh pin of control chip U1, the PA0 pin of dimming control chip U3 is connected with the collecting electrode of triode Q8, the projecting electrode ground connection of triode Q8, the base of triode Q8 is connected with the fifth port of interface J4 through resistance R37, the PA0 pin of dimming control chip U3 still is connected with the twenty-eighth pin of control chip U1, the PA5 pin of dimming control chip U3 is connected with the PA 7, the collecting electrode of triode Q7 is connected with the collecting electrode of triode Q4 through the collector connection of triode Q7.
Further, the dimming module comprises a resistor R32, a capacitor C16, a controllable silicon TR1, a resistor R31, an optocoupler U2 and a resistor R19;
one end of a resistor R32 is connected with one end of a capacitor C16, the other end of the resistor R32 is connected with one end of a resistor R31 and a first port of a controlled silicon TR1 respectively, a second port of the controlled silicon TR1 and the other end of the capacitor C16 are both connected with a power supply voltage output end, the other end of the resistor R31 is connected with a sixth port of an optocoupler U2, a fourth port of the optocoupler U2 is connected with a third port of the controlled silicon TR1, and a first port of the optocoupler U2 is connected with a PA4 pin of a dimming control chip through a resistor R19, and a second port of the optocoupler U2 is grounded.
Further, the intelligent dimming control system further comprises a power module, wherein the power module is respectively connected with the control module, the dimming control module and the dimming module and comprises a step-down output circuit and a zero crossing detection circuit.
Further, the buck output circuit includes a resistor wire F1, a capacitor C17, a capacitor C8, an inductor L1, a resistor R21, a capacitor C11, an ac-dc converter D1, a resistor R22, a diode D2, a capacitor EC1, a capacitor C12, a resistor R23, a diode D3, a diode D4, a capacitor C13, a resistor R24, and a battery BATT1;
one end of the resistance wire F1 is connected with an input alternating voltage end, the other end of the resistance wire F1 is respectively connected with one end of the capacitor C17 and one end of the inductor L1, the other end of the inductor L1 is respectively connected with one end of the capacitor C8 and one end of the resistor R21, the other end of the capacitor C8 and the other end of the capacitor C17 are both connected with the input alternating voltage end, the other end of the resistor R21 is connected with the alternating current-direct current converter D1, the capacitor C11 is connected at two ends of the capacitor C11 in parallel, one end of the resistor R22 is connected with the direct current output anode of the alternating current-direct current converter D1, the other end of the resistor R22 is connected with the direct current output anode of the alternating current-direct current converter D1, the anode of the diode D2 is connected with the direct current output anode of the alternating current-direct current converter D1, the positive electrode of the capacitor EC1 is connected with the direct current output positive electrode of the alternating current-direct current converter D1, the negative electrode of the capacitor EC1 is connected with the direct current output negative electrode of the alternating current-direct current converter D1, the capacitor C12 is connected at two ends of the capacitor EC1 in parallel, one end of the resistor R23 is connected with the direct current output positive electrode of the alternating current-direct current converter D1, the other end of the resistor R23 is respectively connected with the negative electrode of the diode D3 and the positive electrode of the diode D4, the negative electrode of the diode D4 is respectively connected with one end of the resistor R24 and one end of the capacitor C13, the other end of the capacitor C13 and the positive electrode of the diode D3 are both connected with the direct current output negative electrode of the alternating current-direct current converter D1, the other end of the resistor R24 is connected with the positive electrode of the battery BATT1, and the negative electrode of the direct current output negative electrode of the alternating current-direct current-current converter D1 is also grounded;
one end of the resistor R21 connected with the inductor L1 is also connected with a first port of the controllable silicon TR1 in the dimming module.
Further, the zero-crossing detection circuit includes a resistor R25, a resistor R26, a diode D6, a diode D7, a resistor R27, a resistor R28, and an operational amplifier LM1;
one end of a resistor R25 is connected with an input alternating voltage end, the other end of the resistor R25 is connected with the negative electrode of a diode D6, one end of a resistor R26 is connected with the input alternating voltage end through a resistor wire F1, the other end of the resistor R26 is connected with the positive electrode of the diode D6, the positive electrode of the diode D7 is connected with the negative electrode of the diode D6, the negative electrode of the diode D7 is connected with the positive electrode of the diode D6, the negative electrode of the diode D6 is grounded through a resistor R27, the positive electrode of the diode D6 is grounded through a resistor R28, the first port of an operational amplifier LM1 is connected with the negative electrode of the diode D7, the second port of the operational amplifier LM1 is grounded, the third port of the operational amplifier LM1 is connected with the positive electrode of the diode D7, the fourth port of the operational amplifier LM1 is connected with the PA2 pin of a dimming control chip U3 through a resistor R35, and the fifth port of the operational amplifier LM1 is connected with a power supply.
Further, the device also comprises an indicator light module which is connected with the control module;
the indicator light module comprises a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R5, a resistor R16, a resistor R7, a resistor R18, a light emitting diode LED1, a light emitting diode LED2, a light emitting diode LED3, a light emitting diode LED4, a light emitting diode LED5, a light emitting diode LED6, a triode Q1, a triode Q2, a triode Q3, a triode Q4, a triode Q5 and a triode Q6;
one end of a resistor R8 is connected with a power supply, the other end of the resistor R8 is connected with the positive electrode of a light emitting diode LED1, the negative electrode of the light emitting diode LED1 is connected with the collector electrode of a triode Q1, the emitter electrode of the triode Q1 is grounded, the base electrode of the triode Q1 is connected with a nineteenth pin of a control chip U1 through a resistor R7, one end of a resistor R10 is connected with the power supply, the other end of the resistor R10 is connected with the positive electrode of a light emitting diode LED2, the negative electrode of the light emitting diode LED2 is connected with the collector electrode of the triode Q2, the emitter electrode of the triode Q2 is grounded, the base electrode of the triode Q2 is connected with the eighteenth pin of the control chip U1 through a resistor R9, one end of a resistor R12 is connected with the power supply, the other end of the resistor R12 is connected with the positive electrode of the light emitting diode LED3, the negative electrode of the light emitting diode LED3 is connected with the collector electrode of the triode Q3, the emitter electrode of the triode Q3 is grounded, the base electrode of the triode Q3 is connected with a fifth pin of the control chip U1 through a resistor R11, one end of the resistor R14 is connected with a power supply, the other end of the resistor R14 is connected with the positive electrode of the light emitting diode LED4, the negative electrode of the light emitting diode LED4 is connected with the collector electrode of the triode Q4, the emitter electrode of the triode Q4 is grounded, the base electrode of the triode Q4 is connected with the fourth pin of the control chip U1 through the resistor R13, one end of the resistor R16 is connected with the power supply, the other end of the resistor R16 is connected with the positive electrode of the light emitting diode LED5, the negative electrode of the light emitting diode LED5 is connected with the collector electrode of the triode Q5, the emitter electrode of the triode Q5 is grounded, the base electrode of the triode Q5 is connected with the third pin of the control chip U1 through the resistor R15, one end of the resistor R18 is connected with the power supply, the other end of the resistor R18 is connected with the positive electrode of the light emitting diode LED6, the negative electrode of the light emitting diode LED6 is connected with the collector electrode of the triode Q6, the emitter electrode of the triode Q6 is grounded, the base of the triode Q6 is connected with the second pin of the control chip U1 through a resistor R17.
Further, the device also comprises an LCD display module which is connected with the control module and used for displaying the specific time and the light intensity set by the user in real time.
Compared with the prior art, the invention at least comprises the following beneficial effects:
(1) The control circuit can control the on-off time of the lamp by selecting a certain on-off time through the setting module according to the requirements of a user, and can also set the light intensity of the lamp through the setting module.
(2) The two chips are used for respectively controlling timing adjustment and lamplight adjustment, so that the adjustment of the control circuit is more accurate;
(3) The LCD display panel can display the specific setting content of the user in real time.
Drawings
FIG. 1 is a schematic diagram of the overall architecture of an embodiment of the present invention;
FIG. 2 is a circuit diagram of a control module and an LCD display module according to an embodiment of the invention;
FIG. 3 is a circuit diagram of a setup module in an embodiment of the invention;
FIG. 4 is a circuit diagram of a dimming control module according to an embodiment of the present invention;
FIG. 5 is a circuit diagram of a dimmer module according to an embodiment of the present invention;
FIG. 6 is a circuit diagram of a power module in an embodiment of the invention;
fig. 7 is a circuit diagram illustrating a lamp module in an embodiment of the present invention.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, the digital timing dimmer control circuit of the present invention includes a setting module, a control module, a dimming module, a power module, an indicator light module, and an LCD display module.
The setting module, the dimming control module, the power module, the indicator light module and the LCD display module are all connected with the control module, and the dimming module is respectively connected with the power module and the dimming control module.
Further, as shown in fig. 2, the control module includes a control chip U1, a reset circuit and a crystal oscillator circuit; the twenty-seventh pin and the twenty-eighth pin of the control chip U1 are connected with the dimming control module.
The control chip U1 comprises thirty-eighth pins to fortieth-first pins and fortieth-fourth pins to fifty-sixth pins, wherein the LED display module is used for displaying specific time set by a user and light intensity in real time, and the control module is used for generating corresponding control signals according to the setting signals of the timing time acquired by the setting module;
as shown in fig. 3, the setting module includes a key S1, a key S2, a key S3, a key S4, a key S5, a key S6, a key S7, a key S8, a key S9, and a capacitor C7.
One end of the key S7 is connected with a twentieth pin of the control chip U1, the other end of the key S7 is connected with one end of the key S4, the other end of the key S4 is connected with a twenty-first pin of the control chip U1, the other end of the key S7 is also connected with one end of the key S1, the other end of the key S7 is also connected with a twenty-third pin of the control chip U1, one end of the key S8 is connected with a twentieth pin of the control chip U1, the other end of the key S8 is connected with one end of the key S5, the other end of the key S5 is connected with a twenty-first pin of the control chip U1, the other end of the key S8 is also connected with one end of the key S2, the other end of the key S2 is connected with a twenty-second pin of the control chip U1, the other end of the key S9 is also connected with a twenty-fourth pin of the control chip U1, the other end of the key S9 is connected with one end of the control chip U6, the other end of the key S6 is connected with the twenty-first pin of the control chip U1, the other end of the key S9 is also connected with the twenty-second pin of the control chip U3, and the other end of the key S9 is connected with the twenty-second pin of the control chip U1.
The setting module is used for acquiring a setting signal of the timing time and an adjusting signal of the light intensity according to the requirement of a user, and the control chip U1 can recognize the setting of the timing and the light intensity of the user by pressing different keys, so that the control chip U1 can make corresponding adjustment and claim the corresponding control signal.
As shown in fig. 4, the dimming control module includes a dimming control chip U3, a resistor R33, a resistor R43, a resistor R34, a diode D5, a capacitor C15, a resistor R35, a capacitor R36, a transistor Q7, a transistor Q8, a resistor R37, and an interface J4.
The negative pole of diode D5, the one end of electric capacity C15 and the VDD pin of dimming control chip all are connected with the one end of resistance R33, the positive pole ground connection of diode D5, the other end ground connection of electric capacity C15, the other end of resistance R33 is connected with the one end of resistance R43, the other end of resistance R43 is connected with one end ground connection of resistance R34, the one end that resistance R43 is connected with resistance R34 still is connected with the PA1 pin of dimming control chip U3, the one end that resistance R33 is connected with resistance R43 still connects 24V power, the PA1 pin of dimming control chip U3 still is connected with the twenty-seventh pin of control chip U1, the PA0 pin of dimming control chip U3 is connected with the collecting electrode of triode Q8, the projecting electrode ground connection of triode Q8, the base of triode Q8 is connected with the fifth port of interface J4 through resistance R37, the PA0 pin of dimming control chip U3 still is connected with the twenty-eighth pin of control chip U1, the PA5 pin of dimming control chip U3 is connected with the PA 7, the collecting electrode of triode Q7 is connected with the collecting electrode of triode Q4 through the collector connection of triode Q7.
The dimming control module is used for generating a corresponding dimming signal according to a control signal generated by the control module, the control chip U1 is a low-voltage chip, the main frequency is lower, the influence of voltage and temperature is large, and the dimming control module is not suitable for being used as a dimming control chip, so that the dimming control function is realized by adopting the special dimming control chip U3, and the control circuit is more accurate in adjusting the light intensity due to the arrangement.
The dimming control module can be externally connected with an external key through the interface J4, the external key is used for controlling the output switch and dimming, the external key is used for outputting the switch, the long-time pressing is used for dimming control, when the output is started, the output of the ONFF port is high, so that Q7 is conducted, the PA5 pin of the dimming control chip U3 is low-level input, the light is started through the output signal of the PA4 pin, when the output is started after the long-time pressing, the Q8 is conducted due to the high level output of the KEYIN port, the low-level signal is input to the PA0 pin of the dimming control chip U3, and the light intensity of the lamp is regulated by outputting PWM signals according to the time length of the key pressing.
As shown in fig. 5, the dimming module includes a resistor R32, a capacitor C16, a thyristor TR1, a resistor R31, an optocoupler U2, and a resistor R19; one end of a resistor R32 is connected with one end of a capacitor C16, the other end of the resistor R32 is connected with one end of a resistor R31 and a first port of a controlled silicon TR1 respectively, a second port of the controlled silicon TR1 and the other end of the capacitor C16 are both connected with a power supply voltage output end, the other end of the resistor R31 is connected with a sixth port of an optocoupler U2, a fourth port of the optocoupler U2 is connected with a third port of the controlled silicon TR1, and a first port of the optocoupler U2 is connected with a PA4 pin of a dimming control chip through a resistor R19, and a second port of the optocoupler U2 is grounded.
The dimming module is used for controlling the light intensity according to the dimming signal, and controlling the current flowing through the controllable silicon TR1 through the PWM signal, so that the input voltage of the lamp is changed, and the purpose of adjusting the light intensity is achieved.
The optocoupler U2 is arranged, so that the PWM signals are isolated before flowing to the controllable silicon TR1, the current flowing to the controllable silicon TR1 is more stable, and the adjustment of the light intensity is more accurate.
As shown in fig. 6, the power module is connected with the control module, the dimming control module and the dimming module respectively, and the power module comprises a step-down output circuit and a zero crossing detection circuit.
The buck output circuit comprises a resistor wire F1, a capacitor C17, a capacitor C8, an inductor L1, a resistor R21, a capacitor C11, an alternating current-direct current converter D1, a resistor R22, a diode D2, a capacitor EC1, a capacitor C12, a resistor R23, a diode D3, a diode D4, a capacitor C13, a resistor R24 and a battery BATT1.
One end of the resistance wire F1 is connected with an input alternating voltage end, the other end of the resistance wire F1 is respectively connected with one end of the capacitor C17 and one end of the inductor L1, the other end of the inductor L1 is respectively connected with one end of the capacitor C8 and one end of the resistor R21, the other end of the capacitor C8 and the other end of the capacitor C17 are both connected with the input alternating voltage end, the other end of the resistor R21 is connected with the alternating current-direct current converter D1, the capacitor C11 is connected at two ends of the capacitor C11 in parallel, one end of the resistor R22 is connected with the direct current output anode of the alternating current-direct current converter D1, the other end of the resistor R22 is connected with the direct current output anode of the alternating current-direct current converter D1, the anode of the diode D2 is connected with the direct current output anode of the alternating current-direct current converter D1, the positive electrode of the capacitor EC1 is connected with the direct current output positive electrode of the alternating current-direct current converter D1, the negative electrode of the capacitor EC1 is connected with the direct current output negative electrode of the alternating current-direct current converter D1, the capacitor C12 is connected at two ends of the capacitor EC1 in parallel, one end of the resistor R23 is connected with the direct current output positive electrode of the alternating current-direct current converter D1, the other end of the resistor R23 is respectively connected with the negative electrode of the diode D3 and the positive electrode of the diode D4, the negative electrode of the diode D4 is respectively connected with one end of the resistor R24 and one end of the capacitor C13, the other end of the capacitor C13 and the positive electrode of the diode D3 are both connected with the direct current output negative electrode of the alternating current-direct current converter D1, the other end of the resistor R24 is connected with the positive electrode of the battery BATT1, and the negative electrode of the direct current output negative electrode of the alternating current-direct current-current converter D1 is also grounded; one end of the resistor R21 connected with the inductor L1 is also connected with a first port of the controllable silicon TR1 in the dimming module.
The 24V power supply can be output at the direct current output end of the alternating current-direct current converter, the 24V power supply can supply power for the control chip U1 and the dimming control chip U3, 2V output voltage is obtained through voltage reduction of the resistor R23 and the diode D4, and the power can be supplied for the control chip U1.
The zero-crossing detection circuit comprises a resistor R25, a resistor R26, a diode D6, a diode D7, a resistor R27, a resistor R28 and an operational amplifier LM1; one end of a resistor R25 is connected with an input alternating voltage end, the other end of the resistor R25 is connected with the negative electrode of a diode D6, one end of a resistor R26 is connected with the input alternating voltage end through a resistor wire F1, the other end of the resistor R26 is connected with the positive electrode of the diode D6, the positive electrode of the diode D7 is connected with the negative electrode of the diode D6, the negative electrode of the diode D7 is connected with the positive electrode of the diode D6, the negative electrode of the diode D6 is grounded through a resistor R27, the positive electrode of the diode D6 is grounded through a resistor R28, the first port of an operational amplifier LM1 is connected with the negative electrode of the diode D7, the second port of the operational amplifier LM1 is grounded, the third port of the operational amplifier LM1 is connected with the positive electrode of the diode D7, the fourth port of the operational amplifier LM1 is connected with the PA2 pin of a dimming control chip U3 through a resistor R35, and the fifth port of the operational amplifier LM1 is connected with a power supply.
The voltage of 220V alternating current is continuously changed along with the change of time, the time of one period is 2 seconds, a reference point is needed as a starting point in a control circuit for achieving the purpose of dimming, the starting point is the moment when the alternating current power supply voltage is 0, zero crossing detection is to send a zero crossing signal to the control circuit when the alternating current voltage is zero, and the control circuit can have the reference point to regulate the alternating current voltage input, so that the light intensity is regulated.
As shown in fig. 7, the indicator light module includes a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R5, a resistor R16, a resistor R7, a resistor R18, a light emitting diode LED1, a light emitting diode LED2, a light emitting diode LED3, a light emitting diode LED4, a light emitting diode LED5, a light emitting diode LED6, a triode Q1, a triode Q2, a triode Q3, a triode Q4, a triode Q5, and a triode Q6;
one end of a resistor R8 is connected with a power supply, the other end of the resistor R8 is connected with the positive electrode of a light emitting diode LED1, the negative electrode of the light emitting diode LED1 is connected with the collector electrode of a triode Q1, the emitter electrode of the triode Q1 is grounded, the base electrode of the triode Q1 is connected with a nineteenth pin of a control chip U1 through a resistor R7, one end of a resistor R10 is connected with the power supply, the other end of the resistor R10 is connected with the positive electrode of a light emitting diode LED2, the negative electrode of the light emitting diode LED2 is connected with the collector electrode of the triode Q2, the emitter electrode of the triode Q2 is grounded, the base electrode of the triode Q2 is connected with the eighteenth pin of the control chip U1 through a resistor R9, one end of a resistor R12 is connected with the power supply, the other end of the resistor R12 is connected with the positive electrode of the light emitting diode LED3, the negative electrode of the light emitting diode LED3 is connected with the collector electrode of the triode Q3, the emitter electrode of the triode Q3 is grounded, the base electrode of the triode Q3 is connected with a fifth pin of the control chip U1 through a resistor R11, one end of the resistor R14 is connected with a power supply, the other end of the resistor R14 is connected with the positive electrode of the light emitting diode LED4, the negative electrode of the light emitting diode LED4 is connected with the collector electrode of the triode Q4, the emitter electrode of the triode Q4 is grounded, the base electrode of the triode Q4 is connected with the fourth pin of the control chip U1 through the resistor R13, one end of the resistor R16 is connected with the power supply, the other end of the resistor R16 is connected with the positive electrode of the light emitting diode LED5, the negative electrode of the light emitting diode LED5 is connected with the collector electrode of the triode Q5, the emitter electrode of the triode Q5 is grounded, the base electrode of the triode Q5 is connected with the third pin of the control chip U1 through the resistor R15, one end of the resistor R18 is connected with the power supply, the other end of the resistor R18 is connected with the positive electrode of the light emitting diode LED6, the negative electrode of the light emitting diode LED6 is connected with the collector electrode of the triode Q6, the emitter electrode of the triode Q6 is grounded, the base of the triode Q6 is connected with the second pin of the control chip U1 through a resistor R17.
Through the pressing of each button in the setting module, the control chip U1 can send corresponding indication signals to the indicator lamp module, so that corresponding light emitting diodes in the indicator lamp can emit light, and a user can know whether the setting of the user is successful or not when the button is pressed.
The control circuit can control the on-off time of the lamp by selecting a certain on-off time through the setting module according to the requirements of a user, and can also set the light intensity of the lamp through the setting module.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. A digital timing dimmer control circuit, comprising:
the setting module is used for acquiring a setting signal of the timing time and an adjusting signal of the light intensity according to the requirement of a user;
the control module is connected with the setting module and is used for generating corresponding control signals according to the timing time setting signals acquired by the setting module;
the dimming control module is connected with the control module and is used for generating a corresponding dimming signal according to the control signal generated by the control module;
the dimming module is connected with the dimming control module and used for controlling the light intensity according to the dimming signal;
the control module comprises a control chip U1, a reset circuit and a crystal oscillator circuit; the twenty-seventh pin and the twenty-eighth pin of the control chip U1 are connected with the dimming control module;
the dimming control module comprises a dimming control chip U3, a resistor R33, a resistor R43, a resistor R34, a diode D5, a capacitor C15, a resistor R35, a resistor R36, a triode Q7, a triode Q8, a resistor R37 and an interface J4;
the cathode of the diode D5, one end of the capacitor C15 and the VDD pin of the dimming control chip are all connected with one end of the resistor R33, the anode of the diode D5 is grounded, the other end of the capacitor C15 is grounded, the other end of the resistor R33 is connected with one end of the resistor R43, the other end of the resistor R43 is connected with one end of the resistor R34, one end of the resistor R43 connected with the resistor R34 is also connected with the PA1 pin of the dimming control chip U3, one end of the resistor R33 connected with the resistor R43 is also connected with a 24V power supply, the PA1 pin of the dimming control chip U3 is also connected with the twenty-seventh pin of the control chip U1, the PA0 pin of the dimming control chip U3 is connected with the collector of the triode Q8, the emitter of the triode Q8 is grounded, the base of the triode Q8 is connected with the fifth port of the interface J4 through the resistor R37, the PA0 pin of the dimming control chip U3 is also connected with the twenty-eighth pin of the control chip U1, the PA5 pin of the dimming control chip U3 is connected with the PA 7 through the collector of the triode Q7 is connected with the drain of the triode Q4;
the dimming control module is connected with an external key through an interface J4, controls the output switch and dimming through the external key, short presses the external key to output the switch, long presses the external key to output the dimming control, and outputs PWM signals according to the time length of key pressing to adjust the light intensity.
2. The digital timing dimmer control circuit of claim 1, wherein the setting module comprises key S1, key S2, key S3, key S4, key S5, key S6, key S7, key S8, key S9 and capacitor C7;
one end of the key S7 is connected with a twentieth pin of the control chip U1, the other end of the key S7 is connected with one end of the key S4, the other end of the key S4 is connected with a twenty-first pin of the control chip U1, the other end of the key S7 is also connected with one end of the key S1, the other end of the key S7 is also connected with a twenty-third pin of the control chip U1, one end of the key S8 is connected with a twentieth pin of the control chip U1, the other end of the key S8 is connected with one end of the key S5, the other end of the key S5 is connected with a twenty-first pin of the control chip U1, the other end of the key S8 is also connected with one end of the key S2, the other end of the key S2 is connected with a twenty-second pin of the control chip U1, the other end of the key S9 is also connected with a twenty-fourth pin of the control chip U1, the other end of the key S9 is connected with one end of the control chip U6, the other end of the key S6 is connected with the twenty-first pin of the control chip U1, the other end of the key S9 is also connected with the twenty-second pin of the control chip U3, and the other end of the key S9 is connected with the twenty-second pin of the control chip U1.
3. The digital timing dimmer control circuit of claim 1, wherein the dimming module comprises a resistor R32, a capacitor C16, a thyristor TR1, a resistor R31, an optocoupler U2, and a resistor R19;
one end of a resistor R32 is connected with one end of a capacitor C16, the other end of the resistor R32 is connected with one end of a resistor R31 and a first port of a controlled silicon TR1 respectively, a second port of the controlled silicon TR1 and the other end of the capacitor C16 are both connected with a power supply voltage output end, the other end of the resistor R31 is connected with a sixth port of an optocoupler U2, a fourth port of the optocoupler U2 is connected with a third port of the controlled silicon TR1, and a first port of the optocoupler U2 is connected with a PA4 pin of a dimming control chip through a resistor R19, and a second port of the optocoupler U2 is grounded.
4. The digital timing dimmer control circuit as claimed in claim 1, further comprising a power module, the power module being connected to the control module, the dimming control module and the dimming module, respectively, the power module comprising a buck output circuit and a zero crossing detection circuit.
5. The digital timing dimmer control circuit according to claim 4, wherein the buck output circuit comprises a resistive wire F1, a capacitor C17, a capacitor C8, an inductor L1, a resistor R21, a capacitor C11, an ac-dc converter D1, a resistor R22, a diode D2, a capacitor EC1, a capacitor C12, a resistor R23, a diode D3, a diode D4, a capacitor C13, a resistor R24, and a battery BATT1;
one end of the resistance wire F1 is connected with an input alternating voltage end, the other end of the resistance wire F1 is respectively connected with one end of the capacitor C17 and one end of the inductor L1, the other end of the inductor L1 is respectively connected with one end of the capacitor C8 and one end of the resistor R21, the other end of the capacitor C8 and the other end of the capacitor C17 are both connected with the input alternating voltage end, the other end of the resistor R21 is connected with the alternating current-direct current converter D1, the capacitor C11 is connected at two ends of the resistor R21 in parallel, one end of the resistor R22 is connected with the direct current output anode of the alternating current-direct current converter D1, the other end of the resistor R22 is connected with the direct current output anode of the alternating current-direct current converter D1, the anode of the diode D2 is connected with the direct current output anode of the alternating current-direct current converter D1, the positive electrode of the capacitor EC1 is connected with the direct current output positive electrode of the alternating current-direct current converter D1, the negative electrode of the capacitor EC1 is connected with the direct current output negative electrode of the alternating current-direct current converter D1, the capacitor C12 is connected at two ends of the capacitor EC1 in parallel, one end of the resistor R23 is connected with the direct current output positive electrode of the alternating current-direct current converter D1, the other end of the resistor R23 is respectively connected with the negative electrode of the diode D3 and the positive electrode of the diode D4, the negative electrode of the diode D4 is respectively connected with one end of the resistor R24 and one end of the capacitor C13, the other end of the capacitor C13 and the positive electrode of the diode D3 are both connected with the direct current output negative electrode of the alternating current-direct current converter D1, the other end of the resistor R24 is connected with the positive electrode of the battery BATT1, and the negative electrode of the direct current output negative electrode of the alternating current-direct current-current converter D1 is also grounded;
one end of the resistor R21 connected with the inductor L1 is also connected with a first port of the controllable silicon TR1 in the dimming module.
6. The digital timing dimmer control circuit according to claim 4, wherein the zero-crossing detection circuit comprises a resistor R25, a resistor R26, a diode D6, a diode D7, a resistor R27, a resistor R28, and an operational amplifier LM1;
one end of a resistor R25 is connected with an input alternating voltage end, the other end of the resistor R25 is connected with the negative electrode of a diode D6, one end of a resistor R26 is connected with the input alternating voltage end through a resistor wire F1, the other end of the resistor R26 is connected with the positive electrode of the diode D6, the positive electrode of the diode D7 is connected with the negative electrode of the diode D6, the negative electrode of the diode D7 is connected with the positive electrode of the diode D6, the negative electrode of the diode D6 is grounded through a resistor R27, the positive electrode of the diode D6 is grounded through a resistor R28, the first port of an operational amplifier LM1 is connected with the negative electrode of the diode D7, the second port of the operational amplifier LM1 is grounded, the third port of the operational amplifier LM1 is connected with the positive electrode of the diode D7, the fourth port of the operational amplifier LM1 is connected with the PA2 pin of a dimming control chip U3 through a resistor R35, and the fifth port of the operational amplifier LM1 is connected with a power supply.
7. The digital timing dimmer control circuit of claim 1, further comprising an indicator light module coupled to the control module;
the indicator light module comprises a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R7, a resistor R18, a light emitting diode LED1, a light emitting diode LED2, a light emitting diode LED3, a light emitting diode LED4, a light emitting diode LED5, a light emitting diode LED6, a triode Q1, a triode Q2, a triode Q3, a triode Q4, a triode Q5 and a triode Q6;
one end of a resistor R8 is connected with a power supply, the other end of the resistor R8 is connected with the positive electrode of a light emitting diode LED1, the negative electrode of the light emitting diode LED1 is connected with the collector electrode of a triode Q1, the emitter electrode of the triode Q1 is grounded, the base electrode of the triode Q1 is connected with a nineteenth pin of a control chip U1 through a resistor R7, one end of a resistor R10 is connected with the power supply, the other end of the resistor R10 is connected with the positive electrode of a light emitting diode LED2, the negative electrode of the light emitting diode LED2 is connected with the collector electrode of the triode Q2, the emitter electrode of the triode Q2 is grounded, the base electrode of the triode Q2 is connected with the eighteenth pin of the control chip U1 through a resistor R9, one end of a resistor R12 is connected with the power supply, the other end of the resistor R12 is connected with the positive electrode of the light emitting diode LED3, the negative electrode of the light emitting diode LED3 is connected with the collector electrode of the triode Q3, the emitter electrode of the triode Q3 is grounded, the base electrode of the triode Q3 is connected with a fifth pin of the control chip U1 through a resistor R11, one end of the resistor R14 is connected with a power supply, the other end of the resistor R14 is connected with the positive electrode of the light emitting diode LED4, the negative electrode of the light emitting diode LED4 is connected with the collector electrode of the triode Q4, the emitter electrode of the triode Q4 is grounded, the base electrode of the triode Q4 is connected with the fourth pin of the control chip U1 through the resistor R13, one end of the resistor R16 is connected with the power supply, the other end of the resistor R16 is connected with the positive electrode of the light emitting diode LED5, the negative electrode of the light emitting diode LED5 is connected with the collector electrode of the triode Q5, the emitter electrode of the triode Q5 is grounded, the base electrode of the triode Q5 is connected with the third pin of the control chip U1 through the resistor R15, one end of the resistor R18 is connected with the power supply, the other end of the resistor R18 is connected with the positive electrode of the light emitting diode LED6, the negative electrode of the light emitting diode LED6 is connected with the collector electrode of the triode Q6, the emitter electrode of the triode Q6 is grounded, the base of the triode Q6 is connected with the second pin of the control chip U1 through a resistor R17.
8. The digital timing dimmer control circuit as claimed in claim 1, further comprising an LCD display module coupled to the control module, the LCD display module being configured to display in real time a specific time set by a user and a light intensity.
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