CN111405721A - Wireless control L ED intelligent power supply - Google Patents
Wireless control L ED intelligent power supply Download PDFInfo
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- CN111405721A CN111405721A CN201911107019.5A CN201911107019A CN111405721A CN 111405721 A CN111405721 A CN 111405721A CN 201911107019 A CN201911107019 A CN 201911107019A CN 111405721 A CN111405721 A CN 111405721A
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a wireless control L ED intelligent power supply which is characterized by comprising a power grid voltage monitoring circuit, a controller, an auxiliary power supply circuit and a working circuit, wherein a working circuit voltage acquisition end is connected with a power grid voltage monitoring circuit signal input end, a working circuit internal power supply output end is connected with an auxiliary power supply circuit power supply input end, a power grid voltage monitoring circuit voltage signal end is connected with a controller power grid voltage signal receiving end, an auxiliary power supply circuit output end is connected with a controller power supply end, and a controller duty ratio signal output end is connected with the working circuit.
Description
Technical Field
The invention relates to the technical field of lighting, in particular to a wireless control L ED intelligent power supply.
Background
In the field of intelligent lighting, Zigbee, WIFI and B L E have become the main choices of wireless control, domestic power grid fluctuation is large, abnormal high voltage of the power grid easily causes damage to electric products, real-time monitoring and advanced prevention cannot be achieved, the requirements of human beings on the luminous environment are higher and higher, and brightness, color temperature, glare, flicker and the like are achieved.
The invention discloses a Chinese patent publication No. CN106161798A, which is named as an intelligent wireless L ED street lamp in 2016, 23 and 2016, and the application comprises an intelligent mobile customer service end, a signal receiving and transmitting unit, a signal transmitting and receiving unit, a WIFI wireless network, an intelligent control module, a monitoring system module, an intelligent electronic display screen, a service propaganda module, an intelligent road lighting system and a power supply module.
Disclosure of Invention
The invention aims to overcome the problem that the prior art can not be processed according to the abnormal condition of the power grid voltage to protect L ED lamps, and provides a wireless control L ED intelligent power supply which can be processed according to the abnormal condition of the power grid voltage to protect L ED lamps.
In order to achieve the purpose, the invention adopts the following technical scheme:
the technical scheme includes that the wireless control L ED intelligent power supply comprises a power grid voltage monitoring circuit, a controller, an auxiliary power supply circuit and a working circuit, wherein a working circuit voltage acquisition end is connected with a power grid voltage monitoring circuit signal input end, a working circuit internal power supply output end is connected with an auxiliary power supply circuit power supply input end, a power grid voltage monitoring circuit voltage signal end is connected with a controller power grid voltage signal receiving end, an auxiliary power supply circuit output end is connected with a controller power supply end, and a controller duty ratio signal output end is connected with the working circuit.
Preferably, the grid voltage monitoring circuit comprises a resistor RS71, a voltage judging switch, a resistor RS72, a signal transmitter, a grid voltage monitoring circuit direct-current power supply Vcc and a resistorRS73, resistance RS71 one end is as grid voltage monitoring circuit signal input end, resistance RS71 other end connection voltage judges switch input end and resistance RS72 one end, resistance RS72 other end ground connection, the first input of switch output is judged to the voltage, the first output ground of signal transmitter, grid voltage monitoring circuit DC power supply Vcc is connected to signal transmitter second input, the first end of signal transmitter second output connecting resistance RS73, resistance RS73 second end ground connection, the first end of resistance RS73 is as grid voltage monitoring circuit voltage signal end. The voltage signal HV of the voltage acquisition end of the working circuit is input from RS71, flows to the ground through RS72, and the voltage of the point A divided by RS71 and RS72 is UAIf U is presentAWhen the voltage is larger than the judgment threshold value of the voltage judgment switch, the signal transmitter is started, the current of the direct-current power supply Vcc of the power grid voltage monitoring circuit flows to the ground through the signal transmitter and the resistor RS73, the voltage of the voltage signal end of the power grid voltage monitoring circuit positioned at the first end of the resistor RS73 is increased, and the controller can know that the power grid voltage is abnormal.
Preferably, the wireless control L ED intelligent power supply voltage judging switch is a voltage regulator diode ZS2, the cathode of the voltage regulator diode ZS2 is used as the input end of the voltage judging switch, and the anode of the voltage regulator diode ZS2 is used as the output end of the voltage judging switch.
Preferably, the signal transmitter is an optical coupler U1, an anode of the optical coupler U1 serves as a first input end of the signal transmitter, a cathode of the optical coupler U1 serves as a first output end of the signal transmitter, a collector of the optical coupler U1 serves as a second input end of the signal transmitter, and an emitter of the optical coupler U1 serves as a second input end of the signal transmitter.
Preferably, the wireless control L ED intelligent power supply further comprises a wireless communication module, the power supply end of the wireless communication module is connected with the output end of the auxiliary power supply circuit, and the communication end of the wireless communication module is in serial communication with the wireless communication end of the controller.
Preferably, the working circuit comprises a rectifying and filtering circuit, an AC-DC constant voltage circuit, a first constant current circuit and a second constant current circuit, the input end of the rectifying and filtering circuit is connected with a power supply, the output end of the rectifying and filtering circuit is connected with the input end of the AC-DC constant voltage circuit, the output end of the AC-DC constant voltage circuit is respectively connected with the input end of the first constant current circuit and the input end of the second constant current circuit, the output end of the rectifying and filtering circuit is used as a voltage acquisition end of the working circuit, the AC-DC constant voltage circuit is used as an output end of a power supply in the working circuit, the first duty ratio signal output end of the controller is connected with the duty ratio signal input end of the first constant current circuit.
Preferably, the invention further comprises a wireless control L ED intelligent power supply monitoring method, the wireless control L ED intelligent power supply is adopted, and the control method comprises the following steps:
s1: the controller sets a timing threshold;
s2: detecting the voltage at the input end of the resistor RS73, if the voltage is zero, the controller works normally, and if the voltage is not zero, the next step is started;
s3, the controller starts timing and sends a power grid voltage abnormal signal to a terminal wirelessly connected with the wireless communication module through the wireless communication module, if the timing time exceeds a timing threshold, the controller controls the first constant current circuit and the second constant current circuit not to output voltage, and sends a power grid voltage alarm signal to the terminal wirelessly connected with the wireless communication module through the wireless communication module, after receiving a reset signal of the terminal, the controller recovers the normal control of the first constant current circuit and the second constant current circuit, when the voltage abnormal time does not exceed the timing threshold, the power grid is considered to have less fault and possibly interference, and after the interference, the power grid is recovered to be normal, so only an abnormal signal is sent to the terminal, when the voltage abnormal time exceeds the timing threshold, the power grid or the rectifying and filtering circuit is considered to have the fault which can not be switched, and the controller needs to output a full-empty PWM wave through the first duty ratio signal output end and the second duty ratio signal output end to control the first constant current circuit and the second constant current circuit not to output voltage, so as to avoid burning the ED L.
Therefore, the invention has the following beneficial effects: (1) the voltage signal HV of the voltage acquisition end of the working circuit is input from RS71, flows to the ground through RS72, and the voltage of the point A divided by RS71 and RS72 is UAIf U is presentAWhen the voltage is greater than the judgment threshold value of the voltage judgment switch, the signal transmitter is started, the current of the direct-current power supply Vcc of the power grid voltage monitoring circuit flows to the ground through the signal transmitter and the resistor RS73, the voltage of the voltage signal end of the power grid voltage monitoring circuit positioned at the first end of the resistor RS73 is increased, and the controller can know that the power grid voltage is abnormal;
(2) the wireless module can be in wireless connection with the terminal, can send the information of the controller to the terminal, and can also receive the information sent to the controller by the terminal;
(3) when the voltage abnormal time does not exceed the timing threshold, the fault of the power grid is considered to be not large and possibly interfered, and the power grid can be recovered to be normal after the interference, so that only an abnormal signal is sent to the terminal, when the voltage abnormal time exceeds the timing threshold, the fault that the power grid or the rectifying and filtering circuit cannot be inverted occurs can be considered to be a fault, and the controller is required to output a PWM wave which is completely empty through the first duty ratio signal output end and the second duty ratio signal output end so as to control the first constant current circuit and the second constant current circuit not to output voltage and avoid burning out the L ED lamp.
Drawings
FIG. 1 is a block diagram of an architecture of the present invention
FIG. 2 is a schematic diagram of a grid voltage monitoring circuit of the present invention
In the figure: 1. the wireless communication system comprises a power grid voltage monitoring circuit, 11 a voltage judging switch, 12 a signal transmitter, 2 a controller, 3 an auxiliary power supply circuit, 4 a working circuit, 41 a rectifying and filtering circuit, 42 an AC-DC constant voltage circuit, 43 a first constant current circuit, 44 a second constant current circuit and 5 a wireless communication module.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
An embodiment of the wireless control L ED intelligent power supply is shown in fig. 1 and comprises a power grid voltage monitoring circuit 1, a controller 2, an auxiliary power supply circuit 3, a working circuit 4 and a wireless communication module 5, wherein the working circuit 4 comprises a rectifying and filtering circuit 41, an AC-DC constant voltage circuit 42, a first constant current circuit 43 and a second constant current circuit 44, and the controller can be a single-chip microcomputer PIC17C 43.
The input end of the rectification filter circuit is connected with a power supply, the output end of the rectification filter circuit is connected with the input end of the AC-DC constant voltage circuit, the output end of the AC-DC constant voltage circuit is respectively connected with the input end of the first constant current circuit and the input end of the second constant current circuit, the AC-DC constant voltage circuit is connected with the power supply input end of the auxiliary power supply circuit, the first duty ratio signal output end of the controller is connected with the duty ratio signal input end of the first constant current circuit, the second duty ratio signal output end of the controller is connected with the duty ratio signal input end of the second constant current.
As shown in fig. 2, the grid voltage monitoring circuit 1 includes a resistor RS71, a voltage judging switch 11, a resistor RS72, a signal transmitter 12, a grid voltage monitoring circuit dc power supply Vcc13 and a resistor RS73, the voltage judging switch is a voltage regulator diode ZS2, the signal transmitter is an optocoupler U1, one end of the resistor RS71 is connected to the output end of the rectifying and filtering circuit, the other end of the resistor RS71 is connected to the cathode of the diode ZS2 and one end of the resistor RS72, the other end of the resistor RS72 is grounded, the anode of the diode ZS2 is connected to the anode of the optocoupler U1, the cathode of the optocoupler U1 is grounded, the collector of the optocoupler U1 is connected to the grid voltage monitoring circuit dc power supply Vcc, the emitter of the optocoupler U1 is connected to the first end of the resistor RS73, the second end of the resistor.
The invention also comprises a wireless control L ED intelligent power supply monitoring method, which comprises the following steps:
s1: the controller sets a timing threshold;
s2: detecting the voltage at the input end of the resistor RS73, if the voltage is zero, the controller works normally, and if the voltage is not zero, the next step is started;
s3: the controller starts timing and sends a power grid voltage abnormal signal to a terminal wirelessly connected with the wireless communication module through the wireless communication module, if the timing time exceeds a timing threshold, the controller controls the first constant current circuit and the second constant current circuit not to output voltage, sends a power grid voltage alarm signal to the terminal wirelessly connected with the wireless communication module through the wireless communication module, and resumes abnormal control over the first constant current circuit and the second constant current circuit after receiving a reset signal of the terminal.
The voltage signal HV of the voltage acquisition end of the working circuit is input into the power grid voltage monitoring circuit from the RS71, flows to the ground through the RS72, and the voltage of the point A divided by the RS71 and the RS72 is UAIf U is presentAWhen the voltage is larger than the judgment threshold value of the voltage judgment switch, the signal transmitter is started, the current of the direct-current power supply Vcc of the power grid voltage monitoring circuit flows to the ground through the signal transmitter and the resistor RS73, the voltage of the voltage signal end of the power grid voltage monitoring circuit positioned at the first end of the resistor RS73 is increased, and the controller can know that the power grid voltage is abnormal.
The wireless module can be in wireless connection with the terminal, and can send the information of the controller to the terminal and also can receive the information sent by the terminal to the controller.
The auxiliary power supply converts the current of 48V from the AC-DC constant voltage circuit into the current of 3.3V for the controller and the wireless communication module to use.
When the voltage abnormal time does not exceed the timing threshold, the fault of the power grid is not large, the power grid can be possibly interfered, the power grid can be recovered to be normal after the interference, at the moment, the controller cannot control the first constant current circuit and the second constant current circuit not to output the voltage, only an abnormal signal is sent to the terminal, when the voltage abnormal time exceeds the timing threshold, the power grid or the rectifying and filtering circuit can be considered to have the fault which cannot be inverted, and the controller is required to output a PWM wave which is completely empty through the first duty ratio signal output end and the second duty ratio signal output end so as to control the first constant current circuit and the second constant current circuit not to output the voltage, so that the ED L lamp can not be burnt.
Claims (7)
1. The utility model provides a wireless control L ED smart power supply, characterized by includes electric wire netting voltage monitoring circuit (1), controller (2), auxiliary power supply circuit (3) and working circuit (4), working circuit voltage acquisition end connects electric wire netting voltage monitoring circuit signal input part, auxiliary power supply circuit power input part is connected to the internal power output of working circuit, electric wire netting voltage monitoring circuit voltage signal end connection controller electric wire netting voltage signal receiving terminal, auxiliary power supply circuit output end connection controller power end, the working circuit is connected to controller duty cycle signal output part.
2. The wireless control L ED intelligent power supply according to claim 1, wherein the grid voltage monitoring circuit (1) comprises a resistor RS71, a voltage judging switch (11), a resistor RS72, a signal transmitter (12), a grid voltage monitoring circuit DC power supply Vcc (13) and a resistor RS73, one end of the resistor RS71 is used as a signal input end of the grid voltage monitoring circuit, the other end of the resistor RS71 is connected with the voltage judging switch input end and one end of the resistor RS72, the other end of the resistor RS72 is grounded, the voltage judging switch output end is connected with a first input end of the signal transmitter, a first output end of the signal transmitter is grounded, a second input end of the signal transmitter is connected with the grid voltage monitoring circuit DC power supply Vcc, a second output end of the signal transmitter is connected with a first end of a resistor RS73, a second end of the resistor RS73 is grounded, and a first end of the resistor RS 73.
3. The wireless controlled L ED intelligent power supply as claimed in claim 2, wherein the voltage judging switch (11) is a stabilivolt diode ZS2, the cathode of the stabilivolt diode ZS2 is used as the input terminal of the voltage judging switch, and the anode of the stabilivolt diode ZS2 is used as the output terminal of the voltage judging switch.
4. The wireless controlled L ED intelligent power supply as claimed in claim 2, wherein the signal transmitter (12) is an optocoupler U1, an anode of the optocoupler U1 is used as a first input terminal of the signal transmitter, a cathode of the optocoupler U1 is used as a first output terminal of the signal transmitter, a collector of the optocoupler U1 is used as a second input terminal of the signal transmitter, and an emitter of the optocoupler U1 is used as a second input terminal of the signal transmitter.
5. The wireless controlled L ED intelligent power supply as claimed in claim 1, further comprising a wireless communication module (5), wherein the power supply terminal of the wireless communication module is connected to the output terminal of the auxiliary power supply circuit, and the communication terminal of the wireless communication module is in serial communication with the wireless communication terminal of the controller.
6. The wireless controlled L ED intelligent power supply of claim 1, wherein the working circuit (4) comprises a rectifying filter circuit (41), an AC-DC constant voltage circuit (42), a first constant current circuit (43) and a second constant current circuit (44), the input end of the rectifying filter circuit is connected with the power supply, the output end of the rectifying filter circuit is connected with the input end of the AC-DC constant voltage circuit, the output end of the AC-DC constant voltage circuit is respectively connected with the input end of the first constant current circuit and the input end of the second constant current circuit, the output end of the rectifying filter circuit is used as the working circuit voltage collecting end, the AC-DC constant voltage circuit is used as the internal power supply output end of the working circuit, the first duty ratio signal output end of the controller is connected with the duty ratio signal input end of the first constant current circuit, and the second duty ratio signal output.
7. A wireless controlled L ED smart power monitoring method, using a wireless controlled L ED smart power of any one of claims 1, 2, 4, 5 or 6, the method comprising the steps of:
s1: the controller (2) sets a timing threshold;
s2: detecting the voltage at the input end of the resistor RS73, if the voltage is zero, the controller works normally, and if the voltage is not zero, the next step is started;
s3: the controller starts timing and sends a power grid voltage abnormal signal to a terminal wirelessly connected with the wireless communication module through the wireless communication module, if the timing time exceeds a timing threshold, the controller controls the first constant current circuit (43) and the second constant current circuit (44) not to output voltage, sends a power grid voltage alarm signal to the terminal wirelessly connected with the wireless communication module through the wireless communication module, and after receiving a reset signal of the terminal, the controller recovers abnormal control over the first constant current circuit and the second constant current circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911107019.5A CN111405721B (en) | 2019-11-13 | 2019-11-13 | Wireless control LED intelligent power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911107019.5A CN111405721B (en) | 2019-11-13 | 2019-11-13 | Wireless control LED intelligent power supply |
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| CN111405721A true CN111405721A (en) | 2020-07-10 |
| CN111405721B CN111405721B (en) | 2021-12-03 |
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