CN215818686U - LED street lamp brightness control system - Google Patents
LED street lamp brightness control system Download PDFInfo
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- CN215818686U CN215818686U CN202121891249.8U CN202121891249U CN215818686U CN 215818686 U CN215818686 U CN 215818686U CN 202121891249 U CN202121891249 U CN 202121891249U CN 215818686 U CN215818686 U CN 215818686U
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Abstract
The embodiment of the utility model discloses a brightness adjusting system of an LED street lamp. The technical scheme provided by the embodiment of the utility model comprises the following steps: the LED street lamp control end comprises a main control module and a silicon controlled chopper module, wherein the silicon controlled chopper module is used for adjusting the output voltage waveform according to a received signal, and the silicon controlled chopper module transmits the adjusted output voltage waveform to a street lamp terminal through a street lamp cable; the LED street lamp terminal comprises an LED street lamp power supply, an LED lamp and a waveform detection circuit, wherein the waveform detection circuit is used for detecting transmission voltage waveform on a cable and transmitting the detected output voltage waveform to the LED street lamp power supply module so as to adjust the output current of the LED street lamp power supply module. According to the embodiment of the utility model, the controlled silicon chopped wave is arranged at the control end to adjust the waveform of the output voltage, and the waveform is transmitted to each street lamp power supply terminal through the cable, so that the brightness of each LED street lamp on the cable is uniformly adjusted; and unified street lamp brightness management is convenient to carry out.
Description
Technical Field
The embodiment of the utility model relates to the technical field of street lamp adjustment, in particular to a brightness adjusting system of an LED street lamp.
Background
At present, with the development of society, the use of the LED street lamps on roads is increasing, and since the power supplies used by the LED street lamps are wide voltage inputs and the output does not change with the input voltage, if the brightness of the LED street lamps needs to be adjusted, a method different from that of the common street lamps needs to be used, but products on the market have more or less insufficient places, which brings inconvenience to the use.
The prior art has the following defects:
(1) some products need to be rewired on the street lamp cable, and the installation is inconvenient.
(2) Some products can only be arranged singly and cannot be controlled in a centralized way.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an LED street lamp brightness adjusting system, which is characterized in that the waveform of output voltage is adjusted by arranging silicon controlled chopped waves at a control end, and the waveform is transmitted to each street lamp power supply terminal through a cable, so that the brightness of each LED street lamp on the cable is uniformly adjusted; and unified street lamp brightness management is convenient to carry out.
In a first aspect, an embodiment of the present invention provides an LED street lamp brightness adjusting system, including:
the LED street lamp control end comprises a main control module and a silicon controlled chopper module, wherein the silicon controlled chopper module is used for adjusting the output voltage waveform according to a received signal transmitted by the main control module, and the silicon controlled chopper module transmits the adjusted output voltage waveform to an LED street lamp terminal through a street lamp cable;
the LED street lamp terminal comprises an LED street lamp power supply, an LED lamp and a waveform detection circuit, wherein the LED lamp and the waveform detection circuit are both electrically connected with the LED power supply, and the waveform detection circuit is used for detecting the output voltage waveform transmitted on a street lamp cable and transmitting the detected output voltage waveform to an LED street lamp power supply module so as to adjust the output current of the LED street lamp power supply module; the number of the LED street lamp terminals is at least 2.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the model of the master module is NUC 100-louwu 1.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the LED street lamp control end further includes an optical coupling isolation module, and the main control module is connected to a fire wire end of a street lamp cable through the optical coupling isolation module.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the optical coupling isolation module includes a first optical coupling isolator U4, a resistor R22, a resistor R23, a resistor R24, a capacitor C18, a resistor RA4, and a rectifier bridge U7;
the main control module is connected with one end of a resistor R24 and one end of a capacitor C18 through a signal access end, the other end of the resistor R24 is connected with a pin 6 of a first optocoupler isolator U4 through a resistor R22, the other end of the capacitor C18 is connected with a pin 5 of a first optocoupler isolator U4 through a resistor R23, the main control module is connected with a pin 4 of the first optocoupler isolator U4 through a signal access end, and the other end of the capacitor C18 is connected with a pin 3 of the first optocoupler isolator U4 through a resistor R23; pin 1 of the first optocoupler isolator U4 is connected with pin 1 of a rectifier bridge U7, pin 2 of the first optocoupler isolator U4 is connected with pin 2 of a rectifier bridge U7, pin 3 of the rectifier bridge U7 is connected with a cable fire wire end through a resistor RA4, and pin 4 of the rectifier bridge U7 is connected with an output end.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the first crystal oscillator module and the second crystal oscillator module are further included, and the first crystal oscillator module is electrically connected to the main control module, and includes a capacitor C19, a capacitor C20, and a crystal oscillator chip XT 1; the first crystal oscillator module comprises a capacitor C21, a capacitor C22 and a crystal oscillator chip XT 2;
the ATT-X2 end of the main control module is connected with one end of a crystal oscillator chip XT1 and one end of a capacitor C19, the ATT-X1 end of the main control module is connected with one end of a crystal oscillator chip XT1 and one end of a capacitor C20, and the other end of a capacitor C19 is connected with the other end of a capacitor C20; the X1 end of the main control module is connected with one end of a crystal oscillator chip XT2 and one end of a capacitor C21, the X2 end of the main control module is connected with one end of a crystal oscillator chip XT2 and one end of a capacitor C22, and the other end of a capacitor C21 is connected with the other end of a capacitor C22.
As an alternative implementation manner, in the first aspect of the embodiment of the present invention, the silicon controlled chopper module includes a resistor R18, a resistor R19, a photocoupler U3, a silicon controlled rectifier SCR1, a resistor RA3, and a capacitor CA 1;
the SCR-PWM end of the main control module is connected with the 2 end of a photoelectric coupler U3 through a resistor R18; the VCC end is connected with the 1 end of a photoelectric coupler U3, and the 3 end of the photoelectric coupler U3, the pin 1 of the silicon controlled rectifier SCR1 and one end of the resistor RA3 are connected with the OUT end; the 4 end of the photoelectric coupler U3 is connected with the pin 2 of the silicon controlled rectifier SCR1 through the resistor R19, and the pin 3 of the silicon controlled rectifier SCR1 and one end of the capacitor CA1 are both connected with the live wire end of the cable; the other end of the resistor RA3 is connected to the other end of the capacitor CA 1.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the model of the second optical coupler isolator is TLP 3052.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the LED street lamp control end further includes a reset module electrically connected to the control module.
As an alternative implementation manner, in the first aspect of the embodiment of the present invention, the reset module includes a resistor R10, a resistor R11, a capacitor C11, a capacitor CE6, and a diode D1;
the RESET end of the main control module is connected with one end of a resistor R10, the anode of a diode D1, one end of a capacitor C11 and one end of a capacitor CE6 through a resistor R11; the other end of the capacitor C11 and the other end of the capacitor CE6 are grounded, and the other end of the resistor R10 and the cathode of the diode are connected with the VCC end of the main control module.
According to the embodiment of the utility model, the controlled silicon chopped wave is arranged at the control end to adjust the waveform of the output voltage, and the waveform is transmitted to each street lamp power supply terminal through the cable, so that the brightness of each LED street lamp on the cable is uniformly adjusted; and unified street lamp brightness management is convenient to carry out.
Drawings
Fig. 1 is a schematic circuit block diagram of an LED street lamp brightness adjusting device according to an embodiment of the present invention;
fig. 2 is a pin circuit diagram of a main control module according to an embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of an opto-isolator module according to an embodiment of the present invention;
FIG. 4 is a schematic circuit diagram of a thyristor chopper module provided by an embodiment of the utility model;
fig. 5 is a schematic circuit diagram of a first crystal oscillator module according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a second crystal module according to an embodiment of the present invention;
FIG. 7 is a circuit schematic of a reset module provided by an embodiment of the present invention;
FIG. 8 is a graph showing a normal voltage waveform provided by an embodiment of the present invention;
FIG. 9 is a graph showing the regulated voltage waveform provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment. Except as specifically noted, the materials and equipment used in this example are commercially available. Examples of embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.
In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "connected," "communicating," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a connection through an intervening medium, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic circuit block diagram of an LED street lamp brightness adjusting apparatus according to an embodiment of the present invention, and as shown in fig. 1, an LED street lamp brightness adjusting system according to an embodiment of the present invention includes:
the LED street lamp control end comprises a main control module and a silicon controlled chopper module, wherein the silicon controlled chopper module is used for adjusting the output voltage waveform according to a received signal transmitted by the main control module, and the silicon controlled chopper module transmits the adjusted output voltage waveform to an LED street lamp terminal through a street lamp cable;
the LED street lamp terminal comprises an LED street lamp power supply, an LED lamp and a waveform detection circuit, wherein the LED lamp and the waveform detection circuit are both electrically connected with the LED power supply, and the waveform detection circuit is used for detecting the output voltage waveform transmitted on a street lamp cable and transmitting the detected output voltage waveform to an LED street lamp power supply module so as to adjust the output current of the LED street lamp power supply module; the number of the LED street lamp terminals is at least 2.
In the practical application process, the power supply control end of the LED street lamp is arranged at the front end of a street lamp cable, and each power supply terminal of the LED street lamp is arranged at the position behind the cable where the street lamp is required to be arranged; when the brightness of the LED street lamp needs to be adjusted, a main control module in the power supply control end of the LED street lamp can send an instruction according to requirements, control a control rule chopping module to adjust the waveform of output voltage, and transmit the waveform to each power supply terminal of the LED street lamp through a street lamp cable; the waveform detection circuit in the power supply terminal of the LED street lamp controls the power supply of the LED street lamp to emit corresponding current through detecting t0 time intervals of the output waveform, and then the brightness of the LED street lamp is adjusted. Specifically, fig. 8 is a graph of a normal voltage waveform provided by an embodiment of the present invention, and fig. 9 is a graph of a regulated voltage waveform provided by an embodiment of the present invention. When the specific brightness adjustment is performed, namely, chopping is performed on the commercial power by changing the duty ratio of high and low levels in one period of the control signal, and finally the display brightness of the LED is adjusted.
More preferably, fig. 2 is a pin circuit diagram of a master module according to an embodiment of the present invention, and as shown in fig. 2, the master module is a NUC 100-louwu 1. The control of each circuit module of the control end is realized through the main control module.
More preferably, fig. 3 is a schematic circuit diagram of an optical coupling isolation module according to an embodiment of the present invention, and as shown in fig. 3, the LED street lamp control end further includes the optical coupling isolation module, and the main control module is connected to a fire wire end of a street lamp cable through the optical coupling isolation module.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the optical coupling isolation module includes a first optical coupling isolator U4, a resistor R22, a resistor R23, a resistor R24, a capacitor C18, a resistor RA4, and a rectifier bridge U7;
the main control module is connected with one end of a resistor R24 and one end of a capacitor C18 through a signal access end, the other end of the resistor R24 is connected with a pin 6 of a first optocoupler isolator U4 through a resistor R22, the other end of the capacitor C18 is connected with a pin 5 of a first optocoupler isolator U4 through a resistor R23, the main control module is connected with a pin 4 of the first optocoupler isolator U4 through a signal access end, and the other end of the capacitor C18 is connected with a pin 3 of the first optocoupler isolator U4 through a resistor R23; pin 1 of the first optocoupler isolator U4 is connected with pin 1 of a rectifier bridge U7, pin 2 of the first optocoupler isolator U4 is connected with pin 2 of a rectifier bridge U7, pin 3 of the rectifier bridge U7 is connected with a cable fire wire end through a resistor RA4, and pin 4 of the rectifier bridge U7 is connected with an output end.
The optical coupling isolation module is used for realizing electrical isolation between the main control module and the cable, so that the main control module is not interfered by a cable signal.
As an alternative implementation manner, in the first aspect of the embodiment of the present invention, fig. 5 is a schematic circuit diagram of a first crystal oscillator module provided in the embodiment of the present invention, and fig. 6 is a schematic circuit diagram of a second crystal oscillator module provided in the embodiment of the present invention, as shown in fig. 5 and fig. 6, the first crystal oscillator module and the second crystal oscillator module are further included and electrically connected to the main control module, where the first crystal oscillator module includes a capacitor C19, a capacitor C20, and a crystal oscillator chip XT 1; the first crystal oscillator module comprises a capacitor C21, a capacitor C22 and a crystal oscillator chip XT 2;
the ATT-X2 end of the main control module is connected with one end of a crystal oscillator chip XT1 and one end of a capacitor C19, the ATT-X1 end of the main control module is connected with one end of a crystal oscillator chip XT1 and one end of a capacitor C20, and the other end of a capacitor C19 is connected with the other end of a capacitor C20; the X1 end of the main control module is connected with one end of a crystal oscillator chip XT2 and one end of a capacitor C21, the X2 end of the main control module is connected with one end of a crystal oscillator chip XT2 and one end of a capacitor C22, and the other end of a capacitor C21 is connected with the other end of a capacitor C22.
The crystal oscillator in the embodiment of the utility model provides a basic clock signal for the system; the crystal oscillator module is used for keeping the synchronization of all parts.
As an alternative implementation manner, in the first aspect of the embodiment of the present invention, fig. 4 is a schematic circuit diagram of a thyristor chopping module provided in the embodiment of the present invention, and as shown in fig. 4, the thyristor chopping module includes a resistor R18, a resistor R19, a photocoupler U3, a thyristor rectifier SCR1, a resistor RA3, and a capacitor CA 1;
the SCR-PWM end of the main control module is connected with the 2 end of a photoelectric coupler U3 through a resistor R18; the VCC end is connected with the 1 end of a photoelectric coupler U3, and the 3 end of the photoelectric coupler U3, the pin 1 of the silicon controlled rectifier SCR1 and one end of the resistor RA3 are connected with the OUT end; the 4 end of the photoelectric coupler U3 is connected with the pin 2 of the silicon controlled rectifier SCR1 through the resistor R19, and the pin 3 of the silicon controlled rectifier SCR1 and one end of the capacitor CA1 are both connected with the live wire end of the cable; the other end of the resistor RA3 is connected to the other end of the capacitor CA 1.
The commercial power is chopped by changing the duty ratio of high and low levels in one period of the control signal. It should be noted that when the commercial power crosses zero, the thyristor must be in a cut-off state (i.e. the control signal is at '1'), and considering that the zero crossing point of the zero-crossing output waveform is not accurate (each half cycle has a lag and an advance of 0.01 ms), corresponding processing is required when the software is designed, and it is required to ensure that the conduction time and the conduction time of two half cycles of the commercial power are consistent.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the model of the second optical coupler isolator is TLP 3052.
As an optional implementation manner, in a first aspect of the embodiment of the present invention, fig. 7 is a schematic circuit diagram of a reset module provided in the embodiment of the present invention, and as shown in fig. 7, the control end of the LED street lamp further includes a reset module electrically connected to the control module.
As an alternative implementation manner, in the first aspect of the embodiment of the present invention, the reset module includes a resistor R10, a resistor R11, a capacitor C11, a capacitor CE6, and a diode D1;
the RESET end of the main control module is connected with one end of a resistor R10, the anode of a diode D1, one end of a capacitor C11 and one end of a capacitor CE6 through a resistor R11; the other end of the capacitor C11 and the other end of the capacitor CE6 are grounded, and the other end of the resistor R10 and the cathode of the diode are connected with the VCC end of the main control module. The information reset of the main control module is realized through the reset module.
According to the embodiment of the utility model, the controlled silicon chopped wave is arranged at the control end to adjust the waveform of the output voltage, and the waveform is transmitted to each street lamp power supply terminal through the cable, so that the brightness of each LED street lamp on the cable is uniformly adjusted; and unified street lamp brightness management is convenient to carry out.
The foregoing is considered as illustrative of the preferred embodiments of the utility model and technical principles employed. The present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in more detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the claims.
Claims (9)
1. The utility model provides a LED street lamp brightness control system which characterized in that includes:
the LED street lamp control end comprises a main control module and a silicon controlled chopper module, wherein the silicon controlled chopper module is used for adjusting the output voltage waveform according to a received signal transmitted by the main control module, and the silicon controlled chopper module transmits the adjusted output voltage waveform to an LED street lamp terminal through a street lamp cable;
the LED street lamp terminal comprises an LED street lamp power supply, an LED lamp and a waveform detection circuit, wherein the LED lamp and the waveform detection circuit are both electrically connected with the LED street lamp power supply, and the waveform detection circuit is used for detecting the output voltage waveform transmitted on a street lamp cable and transmitting the detected output voltage waveform to the LED street lamp power supply module so as to adjust the output current of the LED street lamp power supply module; the number of the LED street lamp terminals is at least 2.
2. The LED street lamp brightness adjusting system according to claim 1, wherein the main control module is NUC100-LOWU 1.
3. The LED street lamp brightness adjusting system of claim 2, wherein the LED street lamp control end further comprises an optical coupling isolation module, and the main control module is connected with the fire wire end of the street lamp cable through the optical coupling isolation module.
4. The LED street lamp brightness adjusting system according to claim 3, wherein the optical coupling isolation module comprises a first optical coupling isolator U4, a resistor R22, a resistor R23, a resistor R24, a capacitor C18, a resistor RA4 and a rectifier bridge U7;
the main control module is connected with one end of a resistor R24 and one end of a capacitor C18 through a signal access end, the other end of the resistor R24 is connected with a pin 6 of a first optocoupler isolator U4 through a resistor R22, the other end of the capacitor C18 is connected with a pin 5 of a first optocoupler isolator U4 through a resistor R23, the main control module is connected with a pin 4 of the first optocoupler isolator U4 through a signal access end, and the other end of the capacitor C18 is connected with a pin 3 of the first optocoupler isolator U4 through a resistor R23; pin 1 of the first optocoupler isolator U4 is connected with pin 1 of a rectifier bridge U7, pin 2 of the first optocoupler isolator U4 is connected with pin 2 of a rectifier bridge U7, pin 3 of the rectifier bridge U7 is connected with a cable fire wire end through a resistor RA4, and pin 4 of the rectifier bridge U7 is connected with an output end.
5. The LED street lamp brightness adjusting system according to claim 2, further comprising a first crystal oscillator module and a second crystal oscillator module electrically connected to the main control module, wherein the first crystal oscillator module comprises a capacitor C19, a capacitor C20 and a crystal oscillator chip XT 1; the first crystal oscillator module comprises a capacitor C21, a capacitor C22 and a crystal oscillator chip XT 2;
the ATT-X2 end of the main control module is connected with one end of a crystal oscillator chip XT1 and one end of a capacitor C19, the ATT-X1 end of the main control module is connected with one end of a crystal oscillator chip XT1 and one end of a capacitor C20, and the other end of a capacitor C19 is connected with the other end of a capacitor C20; the X1 end of the main control module is connected with one end of a crystal oscillator chip XT2 and one end of a capacitor C21, the X2 end of the main control module is connected with one end of a crystal oscillator chip XT2 and one end of a capacitor C22, and the other end of a capacitor C21 is connected with the other end of a capacitor C22.
6. The LED street lamp brightness adjusting system according to claim 2, wherein the silicon controlled chopper module comprises a resistor R18, a resistor R19, a second optocoupler isolator U3, a silicon controlled rectifier SCR1, a resistor RA3 and a capacitor CA 1;
the SCR-PWM end of the main control module is connected with the 2 end of a second optical coupler isolator U3 through a resistor R18; the VCC end is connected with the 1 end of a photoelectric coupler U3, and the 3 end of a second optical coupler isolator U3, the pin 1 of a silicon controlled rectifier SCR1 and one end of a resistor RA3 are connected with the OUT end; the 4 end of the second optocoupler isolator U3 is connected with a pin 2 of a silicon controlled rectifier SCR1 through a resistor R19, and a pin 3 of the silicon controlled rectifier SCR1 and one end of a capacitor CA1 are both connected with the live wire end of the cable; the other end of the resistor RA3 is connected to the other end of the capacitor CA 1.
7. The LED street lamp brightness adjusting system according to claim 6, wherein the second optocoupler isolator is TLP3052 in model number.
8. The system for adjusting the brightness of the LED street lamp according to claim 2, wherein the control terminal of the LED street lamp further comprises a reset module electrically connected to the control module.
9. The LED street lamp brightness adjusting system according to claim 8, wherein the reset module comprises a resistor R10, a resistor R11, a capacitor C11, a capacitor CE6 and a diode D1;
the RESET end of the main control module is connected with one end of a resistor R10, the anode of a diode D1, one end of a capacitor C11 and one end of a capacitor CE6 through a resistor R11; the other end of the capacitor C11 and the other end of the capacitor CE6 are grounded, and the other end of the resistor R10 and the cathode of the diode are connected with the VCC end of the main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121891249.8U CN215818686U (en) | 2021-08-12 | 2021-08-12 | LED street lamp brightness control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121891249.8U CN215818686U (en) | 2021-08-12 | 2021-08-12 | LED street lamp brightness control system |
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| CN215818686U true CN215818686U (en) | 2022-02-11 |
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| CN202121891249.8U Active CN215818686U (en) | 2021-08-12 | 2021-08-12 | LED street lamp brightness control system |
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- 2021-08-12 CN CN202121891249.8U patent/CN215818686U/en active Active
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