CN111405721B - Wireless control LED intelligent power supply - Google Patents
Wireless control LED intelligent power supply Download PDFInfo
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- CN111405721B CN111405721B CN201911107019.5A CN201911107019A CN111405721B CN 111405721 B CN111405721 B CN 111405721B CN 201911107019 A CN201911107019 A CN 201911107019A CN 111405721 B CN111405721 B CN 111405721B
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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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Abstract
The invention discloses a wireless control LED 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 voltage acquisition end of the working circuit is connected with a signal input end of the power grid voltage monitoring circuit, an internal power supply output end of the working circuit is connected with a power supply input end of the auxiliary power supply circuit, a voltage signal end of the power grid voltage monitoring circuit is connected with a power grid voltage signal receiving end of the controller, an output end of the auxiliary power supply circuit is connected with a power supply end of the controller, and a duty ratio signal output end of the controller is connected with the working circuit. The invention provides a wireless control LED intelligent power supply which can be used for processing according to the abnormal condition of the voltage of a power grid so as to protect an LED lamp.
Description
Technical Field
The invention relates to the technical field of lighting, in particular to a wireless control LED intelligent power supply.
Background
At present, the intelligent lighting can bring more convenient and comfortable experience for human beings, is convenient for energy management, and is more and more accepted by people. In the field of intelligent lighting, Zigbee, WIFI and BLE have become the main options for wireless control. The domestic power grid has large fluctuation, and the abnormal high voltage of the power grid easily causes damage to electric products, so that real-time monitoring and advanced prevention cannot be realized. Human requirements for light environments are increasing, brightness, color temperature, glare, flicker, etc.
The name of the invention creation of Chinese patent publication No. CN106161798A, 2016, 11, 23 is an intelligent wireless LED street lamp, and the application comprises: the intelligent mobile customer service terminal comprises an intelligent mobile customer service terminal, 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. The detection system module in this application can not detect the unusual rising condition of grid voltage to can not handle according to the unusual rising condition of grid voltage, in order to protect the LED lamp not burnt out.
Disclosure of Invention
The invention provides a wireless control LED intelligent power supply which can process according to the abnormal condition of the power grid voltage to protect an LED lamp, and aims to solve the problem that the prior art can not process according to the abnormal condition of the power grid voltage to protect the LED lamp.
In order to achieve the purpose, the invention adopts the following technical scheme:
the technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a wireless control LED intelligent power supply, including electric wire netting voltage monitoring circuit, a controller, auxiliary power supply circuit and working circuit, the electric wire netting voltage monitoring circuit signal input part is connected to working circuit voltage collection end, the 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 connection controller power end, the working circuit is connected to controller duty cycle signal output part. The controller can control the output duty ratio signal to control the output of the working circuit, the working circuit can not output voltage when required, the power grid voltage monitoring circuit monitors the signal of the voltage acquisition end of the working circuit, and the working circuit can be controlled not to output voltage through the controller once abnormity occurs, so that the LED lamp can be prevented from being burnt.
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 resistor RS73, one end of the resistor RS71 serves 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 a resistor RS72, the other end of the resistor RS72 is grounded, the voltage judging switch output end is connected with the first input end of the signal transmitter, the first output end of the signal transmitter is grounded, the second input end of the signal transmitter is connected with the grid voltage monitoring circuit direct-current power supply Vcc, the second output end of the signal transmitter is connected with the first end of the resistor RS73, the second end of the resistor RS73 is grounded, and the first end of the resistor RS73 serves as a voltage signal end of the grid voltage monitoring circuit. 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, and the current of the direct-current power supply Vcc of the power grid voltage monitoring circuit is transmitted by the signalThe device and the resistor RS73 flow to the ground, the voltage of the voltage signal end of the grid voltage monitoring circuit at the first end of the resistor RS73 is increased, and the controller can know that the grid voltage is abnormal.
Preferably, the wireless control LED 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 LED 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. 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.
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, and the second duty ratio signal output end of the controller is connected with the duty ratio signal input end of the second constant current circuit.
Preferably, the invention further comprises a wireless control LED intelligent power supply monitoring method, the wireless control LED 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, 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. 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 prevent the LED lamp from being burnt out.
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 not to burn out the LED 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.
Example (b): a wireless control LED intelligent power supply is shown in figure 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 circuit, and the output end of the auxiliary power supply circuit is connected with the power supply end of the controller.
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 RS73 is grounded, and the first end of the resistor RS73 is connected to the controller grid voltage signal receiving terminal OV.
The invention also comprises a wireless control LED 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 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 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 grid voltage monitoring circuit at the first end of the resistor RS73 is increased,the controller can know that the 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 all empty PWM waves 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 and avoid burning the LED lamp.
Claims (6)
1. A wireless control LED intelligent power supply is characterized by comprising a power grid voltage monitoring circuit (1), a controller (2), an auxiliary power supply circuit (3) and a working circuit (4), 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, a controller duty ratio signal output end is connected with the working circuit, the power grid voltage monitoring circuit (1) comprises a resistor RS71, a voltage judging switch (11), a resistor RS72, a signal transmitter (12), a power grid voltage monitoring circuit direct-current power supply Vcc (13) and a resistor RS73, one end of the resistor RS71 serves as a power grid voltage monitoring circuit signal input end, 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 output end of the voltage judging switch is connected with the first input end of the signal transmitter, the first output end of the signal transmitter is grounded, the second input end of the signal transmitter is connected with a direct-current power supply Vcc of the power grid voltage monitoring circuit, the second output end of the signal transmitter is connected with the first end of a resistor RS73, the second end of the resistor RS73 is grounded, and the first end of the resistor RS73 is used as a voltage signal end of the power grid voltage monitoring circuit.
2. The wireless control LED intelligent power supply as claimed in claim 1, wherein the voltage judging switch (11) 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.
3. The intelligent power supply of claim 2, wherein the signal transmitter (12) is an optocoupler U1, an anode of the optocoupler U1 is used as a first input end of the signal transmitter, a cathode of the optocoupler U1 is used as a first output end of the signal transmitter, a collector of the optocoupler U1 is used as a second input end of the signal transmitter, and an emitter of the optocoupler U1 is used as a second input end of the signal transmitter.
4. The wireless control LED intelligent power supply according to claim 1, further comprising a wireless communication module (5), wherein 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.
5. The intelligent power supply of wireless control LED according to claim 1, wherein the working circuit (4) comprises a rectifying and filtering circuit (41) and an AC-DC constant voltage circuit (42), 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 working circuit voltage acquisition end, the AC-DC constant voltage circuit is used as an 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 end of the controller is connected with the duty ratio signal input end of the second constant current circuit.
6. A wireless control LED intelligent power supply monitoring method, which adopts a wireless control LED intelligent power supply in any one of claims 1, 2, 4 or 5, and is characterized by comprising the following steps:
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, when the voltage abnormal time does not exceed a timing threshold, the controller sends the abnormal signal to the terminal, if the timing time exceeds the timing threshold, the controller controls a first constant current circuit (43) and a second constant current circuit (44) 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, and after receiving a reset signal of the terminal, the controller recovers normal control over the first constant current circuit and the second constant current circuit.
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| CN201911107019.5A CN111405721B (en) | 2019-11-13 | 2019-11-13 | Wireless control LED intelligent power supply |
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| CN201911107019.5A CN111405721B (en) | 2019-11-13 | 2019-11-13 | Wireless control LED intelligent power supply |
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| CN111405721B true CN111405721B (en) | 2021-12-03 |
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