CN211831249U - LED intelligent street lamp and decorative lighting control system - Google Patents
LED intelligent street lamp and decorative lighting control system Download PDFInfo
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- CN211831249U CN211831249U CN201922476867.5U CN201922476867U CN211831249U CN 211831249 U CN211831249 U CN 211831249U CN 201922476867 U CN201922476867 U CN 201922476867U CN 211831249 U CN211831249 U CN 211831249U
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Abstract
The utility model provides a LED intelligent street lamp and lamp decoration lighting control system, which comprises a controller, an online electricity-taking circuit, a switch control circuit, a power conversion circuit, a constant current circuit, an electronic switch array, an environment detection module, an RS485 communication circuit, a concentrator and a remote monitoring host; the on-line electricity taking circuit converts alternating current of commercial power into direct current, the input end of the switch control circuit is connected with the output end of the on-line electricity taking circuit, the output end of the switch control circuit is connected with the power supply conversion circuit, the power supply conversion circuit has 12V, 5V and 3.3V direct current outputs, and the constant current circuit is used for converting the 12V direct current into current and supplying the current to the LED array; the LED street lamp and the street lamp decorative lighting can be driven simultaneously, so that complex circuit layout is not needed, the use cost is saved, and the street lamp lighting intensity and the decorative lighting intensity can be automatically adjusted according to the light condition and the visibility condition of the environment.
Description
Technical Field
The utility model relates to a LED control system especially relates to a LED intelligence street lamp and lamp decoration lighting control system.
Background
Because the LED lamps and lanterns have energy-conservation, long service life's advantage, present wide application is in the street lamp illumination, in the current street lamp illumination, in the LED street lamp, generally only have the illumination, its function is single, and in the city, also the wide application to illumination lamp decoration, however, among the prior art, LED's street lamp illumination sets up separately with the decorative lighting, this needs complicated circuit layout, thereby it is high to make the arrangement cost, on the other hand, current street lamp illumination and decorative lighting are all artificial control, that is, the manual work is opened street lamp or lamp decoration illumination, often cause the street lamp not yet opened when the road surface light is very insufficient, thereby cause the realization obstacle of traffic, pedestrian, be unfavorable for safety.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a LED intelligence street lamp and lamp decoration lighting control system can drive LED street lamp illumination and street lamp decoration illumination simultaneously to need not complicated circuit layout, practice thrift use cost, moreover, can be according to the light condition and the visibility condition automatically regulated street lamp illumination intensity and the lamp decoration illumination intensity of environment, thereby facilitate the use, the natural light not enough and the illumination situation of not opening can not appear, ensure the safety of pedestrian, traffic.
The utility model provides a LED intelligent street lamp and lamp decoration lighting control system, which comprises a controller, an online electricity-taking circuit, a switch control circuit, a power conversion circuit, a constant current circuit, an electronic switch array, an environment detection module, an RS485 communication circuit, a concentrator and a remote monitoring host;
the on-line electricity taking circuit converts alternating current of commercial power into direct current, the input end of the switch control circuit is connected with the output end of the on-line electricity taking circuit, the output end of the switch control circuit is connected with the power supply conversion circuit, the power supply conversion circuit has 12V, 5V and 3.3V direct current outputs, and the constant current circuit is used for converting the 12V direct current into current and supplying the current to the LED array;
the LED array comprises an illumination array and a decorative lighting array, and the illumination array is provided with a yellow LED lamp YLED and a white LED array WLED; the decoration array comprises three groups of red, yellow and blue LED arrays;
the electronic switch arrays are two groups and respectively correspond to the lighting LED array and the decoration LED array, and the number of the electronic switches of each group of electronic switch array is equal to the number of the color temperatures of the corresponding LED arrays;
the environment detection module is used for detecting the brightness and the visibility of the street lamp position, the output end of the detection module is connected with the controller, the controller is in communication connection with the concentrator through an RS485 communication circuit, the concentrator is in communication connection with the remote monitoring host, and the constant current circuits are in two groups and respectively correspond to the illumination array and the lamp decoration array.
Further, the switch control circuit comprises a resistor R13, a triode Q1, a PMOS tube Q2, an NMOS tube Q3, a resistor R16, a diode D6, an inductor L2, a voltage regulator tube D4, a resistor R14, a resistor R15, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C8, a capacitor C7, a voltage regulator tube D2, a voltage regulator tube D3, a comparator U2 and a comparator U3;
the source of a PMOS tube Q2 is used as the power input end of the switch control circuit and is connected with the output end of the on-line power taking circuit, the source of a PMOS tube Q2 is connected with the grid of a PMOS tube Q2 through a resistor R13, the grid of the PMOS tube Q2 is connected with the collector of a triode Q1, the emitter of a triode Q1 is grounded, the drain of the PMOS tube Q2 is connected with the drain of an NMOS tube Q3, the source of the NMOS tube Q3 is grounded, the drain of the PMOS tube Q2 is connected with the anode of a diode D6 through a resistor R16, and the cathode of the diode D6 is used as the power output end of the switch control circuit;
the inductor L2 is connected between the drain of the PMOS tube Q2 and the resistor R16 in series, the negative electrode of the voltage regulator tube D4 is connected to the common connection point between the inductor L2 and the drain of the PMOS tube Q2, the positive electrode of the voltage regulator tube D4 is grounded through the resistor R14, the positive electrode of the voltage regulator tube D4 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected to the grid of the NMOS tube Q3;
one end of a resistor R8 is connected with the output end of the on-line power-taking circuit, the other end of the resistor R8 is grounded after being connected in series with a resistor R9 and a resistor R10, a common connection point between the resistor R8 and the resistor R9 is grounded through a capacitor C8, a common connection point between the resistor R8 and the resistor R9 is connected with the negative electrode of a voltage regulator tube D3, the positive electrode of the voltage regulator tube D3 is grounded, a common connection point between the resistor R10 and the resistor R9 is grounded through a capacitor C7, a common connection point between the resistor R10 and the resistor R9 is connected with the negative electrode of a voltage regulator tube D2, and the positive electrode of the voltage regulator tube D2;
one end of a resistor R11 is connected with the output end of the online power-taking circuit, the other end of the resistor R11 is grounded through a resistor R12, a common connection point between the resistor R11 and the resistor R12 is respectively connected with the in-phase end of a comparator U2 and the inverting end of a comparator U3, the inverting end of the comparator U2 is connected with the common connection point between the resistor R8 and the resistor R9, the in-phase end of the comparator U3 is connected with the common connection point between the resistor R10 and the resistor R9, the output ends of the comparator U2 and the comparator U3 are connected with the input end of an AND gate circuit AD1, and the output end of the AND gate circuit AD1 is connected with the base of a triode Q1.
Further, the online power taking circuit comprises a transformer T1, a rectifying circuit REC, a capacitor C5, a capacitor C6, a resistor R7 and an operational amplifier U1;
the primary winding of the transformer T1 is connected with a mains supply, the secondary winding of the transformer T1 is connected with the input end of a rectifier circuit REC, the positive output end of the rectifier circuit REC is grounded through a capacitor C5, the negative output end of the rectifier circuit REC is grounded, a common connection point between the positive output end of the rectifier circuit REC and the capacitor C5 is connected with the in-phase end of an operational amplifier U1 through a resistor R7, the in-phase end of the operational amplifier U1 is grounded through a capacitor C6, the inverting end of the operational amplifier U1 is connected with the output end of an operational amplifier U1, and the output end of the operational amplifier U1 serves as the output end of an on-line electricity taking circuit.
Further, the power conversion circuit comprises a 12V voltage circuit, a 5V voltage circuit and a 3.3V voltage circuit, wherein the input end of the 12V voltage circuit is connected with the output end of the switch control circuit, the output end of the 12V voltage circuit is connected with the input end of the 5V voltage circuit, the output end of the 5V voltage circuit is connected with the input end of the 3.3V voltage circuit, the 12V voltage is used for supplying power to the constant current circuit, the 5V voltage is used for supplying working power to the detection module and the RS465 communication circuit, and the 3.3V voltage is used for supplying working power to the controller.
Further, the constant current circuit comprises a resistor R1, an operational amplifier U4, an operational amplifier U5, an operational amplifier U6, a resistor R2, a resistor R3, a capacitor C1 and a digital potentiometer RT 1;
one end of the resistor R1 is used as an input end of a constant current circuit, the other end of the resistor R1 is connected with a non-inverting end of the operational amplifier U4, an output end of the operational amplifier U4 is connected with an input end of a digital potentiometer RT1, an output end of the digital potentiometer RT1 is used as an output end of the constant current circuit to supply power to the LED array, the non-inverting end of the operational amplifier U6 is connected with an output end of the digital potentiometer RT1, an inverting end of the operational amplifier U6 is connected with an output end of the operational amplifier U6, an output end of the operational amplifier U6 is connected with an inverting end of the operational amplifier U5 through a resistor R3, an inverting end of the operational amplifier U5 is connected with an output end of the operational amplifier U5 after being connected with the resistor R2 and a capacitor C1 in parallel, an output end of the operational amplifier U5 is connected with an inverting end of the operational amplifier U4, and a non-inverting end of the operational amplifier.
Further, the environment detection module comprises a visibility sensor and a light intensity sensor, and the output ends of the visibility sensor and the light intensity sensor are connected with the information input end of the controller.
Further, the controller is an STM32F030K6T6 chip.
Further, the RS485 communication circuit is an SN65LBC184DR chip and peripheral circuits thereof.
The utility model has the advantages that: through the utility model discloses, can drive LED street lamp illumination and street lamp decoration illumination simultaneously to need not complicated circuit layout, practice thrift use cost, moreover, can be according to the light condition and the visibility condition automatically regulated street lamp illumination intensity and the lamp decoration illumination intensity of environment, thereby facilitate the use, the situation that the natural light is not enough and the illumination is not opened can not appear, ensures the safety of pedestrian, traffic.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the on-line power-taking circuit and the switch control circuit of the present invention.
Fig. 3 is a schematic diagram of the constant current circuit of the present invention.
Fig. 4 is the schematic diagram of the RS485 communication circuit of the present invention.
Fig. 5 is a schematic diagram of a 12V voltage circuit.
Fig. 6 is a schematic diagram of a 5V voltage circuit.
Fig. 7 is a schematic diagram of a 3.3V voltage circuit.
Detailed Description
The invention is described in further detail below with reference to the drawings in the specification:
the utility model provides a LED intelligent street lamp and lamp decoration lighting control system, which comprises a controller, an online electricity-taking circuit, a switch control circuit, a power conversion circuit, a constant current circuit, an electronic switch array, an environment detection module, an RS485 communication circuit, a concentrator and a remote monitoring host;
the on-line electricity taking circuit converts alternating current of commercial power into direct current, the input end of the switch control circuit is connected with the output end of the on-line electricity taking circuit, the output end of the switch control circuit is connected with the power supply conversion circuit, the power supply conversion circuit has 12V, 5V and 3.3V direct current outputs, and the constant current circuit is used for converting the 12V direct current into current and supplying the current to the LED array;
the LED array comprises an illumination array and a decorative lighting array, and the illumination array is provided with a yellow LED lamp YLED and a white LED array WLED; the decoration array comprises three groups of red, yellow and blue LED arrays;
the electronic switch arrays are two groups and respectively correspond to the lighting LED array and the decoration LED array, and the number of the electronic switches of each group of electronic switch array is equal to the number of the color temperatures of the corresponding LED arrays; the electronic switch adopts the existing transistor, such as a triode and an MOS tube;
the environment detection module is used for detecting the luminance and the visibility of street lamp position, detection module's output is connected with the controller, the controller passes through RS485 communication circuit and concentrator communication connection, concentrator and remote monitoring host communication connection, constant current circuit is two sets of corresponding to illumination array and lamp decoration array respectively, through the utility model discloses, can drive LED street lamp illumination and street lamp decoration illumination simultaneously to need not complicated circuit layout, practice thrift use cost, moreover, can be according to the light condition and the visibility condition automatically regulated street lamp illumination intensity and the lamp decoration illumination intensity of environment, thereby facilitate the use, the situation that the natural light is not enough and the illumination is not opened can not appear, ensures the safety of pedestrian, traffic.
In this embodiment, the switch control circuit includes a resistor R13, a triode Q1, a PMOS transistor Q2, an NMOS transistor Q3, a resistor R16, a diode D6, an inductor L2, a voltage regulator tube D4, a resistor R14, a resistor R15, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C8, a capacitor C7, a voltage regulator tube D2, a voltage regulator tube D3, a comparator U2, and a comparator U3;
the source of a PMOS tube Q2 is used as the power input end of the switch control circuit and is connected with the output end of the on-line power taking circuit, the source of a PMOS tube Q2 is connected with the grid of a PMOS tube Q2 through a resistor R13, the grid of the PMOS tube Q2 is connected with the collector of a triode Q1, the emitter of a triode Q1 is grounded, the drain of the PMOS tube Q2 is connected with the drain of an NMOS tube Q3, the source of the NMOS tube Q3 is grounded, the drain of the PMOS tube Q2 is connected with the anode of a diode D6 through a resistor R16, and the cathode of the diode D6 is used as the power output end of the switch control circuit;
the inductor L2 is connected between the drain of the PMOS tube Q2 and the resistor R16 in series, the negative electrode of the voltage regulator tube D4 is connected to the common connection point between the inductor L2 and the drain of the PMOS tube Q2, the positive electrode of the voltage regulator tube D4 is grounded through the resistor R14, the positive electrode of the voltage regulator tube D4 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected to the grid of the NMOS tube Q3;
one end of a resistor R8 is connected with the output end of the on-line power-taking circuit, the other end of the resistor R8 is grounded after being connected in series with a resistor R9 and a resistor R10, a common connection point between the resistor R8 and the resistor R9 is grounded through a capacitor C8, a common connection point between the resistor R8 and the resistor R9 is connected with the negative electrode of a voltage regulator tube D3, the positive electrode of the voltage regulator tube D3 is grounded, a common connection point between the resistor R10 and the resistor R9 is grounded through a capacitor C7, a common connection point between the resistor R10 and the resistor R9 is connected with the negative electrode of a voltage regulator tube D2, and the positive electrode of the voltage regulator tube D2;
one end of a resistor R11 is connected with the output end of the online power-taking circuit, the other end of the resistor R11 is grounded through a resistor R12, a common connection point between the resistor R11 and the resistor R12 is respectively connected with the in-phase end of a comparator U2 and the inverting end of a comparator U3, the inverting end of the comparator U2 is connected with the common connection point between the resistor R8 and the resistor R9, the in-phase end of the comparator U3 is connected with the common connection point between the resistor R10 and the resistor R9, the output ends of the comparator U2 and the comparator U3 are connected with the input end of an AND gate circuit AD1, and the output end of the AND gate circuit AD1 is connected with the base of a triode Q1. Wherein:
comparator U2 is used to judge whether overvoltage occurs, comparator U3 is used to judge whether undervoltage occurs, when the voltage is not overvoltage or undervoltage, comparator U2 and comparator U3 both output low level, at this time AND gate circuit AD1 outputs high level, triode Q1 is conducted, thereby pulling down the gate voltage of PMOS transistor Q2, PMOS transistor Q2 is conducted, at this time NMOS transistor Q3 is cut off, the switch circuit has output, when overvoltage occurs or undervoltage, comparator U2 or comparator U3 outputs high level, at this time AND gate circuit AD1 outputs low level, triode Q1 is cut off, the gate-source voltage of PMOS transistor Q2 is equal, PMOS transistor Q2 is cut off, output is stopped, when the current is increased and increased, the left end of inductor L2 induces high voltage, stabilivolt D4 is conducted, thereby NMOS transistor Q3 is conducted, the subsequent circuit is short-circuited, thereby current transient protection is performed, the impact of transient current is eliminated, and NMOS transistor Q3 is conducted, when the inductive voltage of the inductor L2 disappears, the NMOS transistor Q3 turns off again, the inductor L2 will continue to get charged, since the inductor L2 has the effect of current delay, the current drawn by the subsequent circuit is still small, and if the current is still too large, due to the voltage division effect of the resistor R11 and the resistor R12, the overvoltage and undervoltage detection circuit participates in detection, thereby controlling the cut-off of the PMOS tube Q2 according to the control logic of the PMOS tube Q2 to realize protection, although the current increases, so that the partial voltage of the resistors R8, R9 and R10 also increases, however, because of the current, the voltage division of the resistor R8, the resistor R9 and the resistor R10 is also increased proportionally, the reference voltage provided by the overvoltage protection circuit is increased in proportion, but the reference voltage is limited in a safety range under the clamping action of the voltage regulator tube D3 and the voltage regulator tube D2, so that overvoltage detection control is realized, and further, a subsequent circuit is well protected.
In this embodiment, the online power supply circuit includes a transformer T1, a rectifier circuit REC, a capacitor C5, a capacitor C6, a resistor R7, and an operational amplifier U1;
the primary winding of the transformer T1 is connected with a mains supply, the secondary winding of the transformer T1 is connected with the input end of a rectifier circuit REC, the positive output end of the rectifier circuit REC is grounded through a capacitor C5, the negative output end of the rectifier circuit REC is grounded, a common connection point between the positive output end of the rectifier circuit REC and a capacitor C5 is connected with the in-phase end of an operational amplifier U1 through a resistor R7, the in-phase end of an operational amplifier U1 is grounded through a capacitor C6, the inverting end of the operational amplifier U1 is connected with the output end of an operational amplifier U1, the output end of an operational amplifier U1 is used as the output end of an on-line power-taking circuit, wherein the transformer T1 is used for carrying out voltage reduction processing on the mains supply, the rectifier circuit REC adopts a full-bridge rectifier circuit composed of diodes and used for rectifying alternating current into direct current, the capacitor C5, the capacitor C6 and the resistor R7 are used for forming a filter circuit, the circuit is used for stabilizing voltage and isolation is formed by utilizing the high input impedance characteristic of the operational amplifier, so that the stability of a subsequent electric device is facilitated.
In this embodiment, the power conversion circuit includes a 12V voltage circuit, a 5V voltage circuit, and a 3.3V voltage circuit, an input end of the 12V voltage circuit is connected to an output end of the switch control circuit, an output end of the 12V voltage circuit is connected to an input end of the 5V voltage circuit, an output end of the 5V voltage circuit is connected to an input end of the 3.3V voltage circuit, the 12V voltage is used to supply power to the constant current circuit, the 5V voltage is used to supply power for operation to the detection module and the RS465 communication circuit, and the 3.3V voltage is used to supply power for operation to the controller, where the 12V voltage circuit employs an LM2 78196 voltage chip, the 5V voltage circuit employs an LM2596 voltage chip, and the 3.3V voltage circuit employs an SGM2202-3.3 voltage chip, and is used to supply stable power for operation to the load through the above circuits.
In this embodiment, the constant current circuit includes a resistor R1, an operational amplifier U4, an operational amplifier U5, an operational amplifier U6, a resistor R2, a resistor R3, a capacitor C1, and a digital potentiometer RT 1;
one end of the resistor R1 is used as an input end of a constant current circuit, the other end of the resistor R1 is connected with the in-phase end of the operational amplifier U4, the output end of the operational amplifier U4 is connected with the input end of the digital potentiometer RT1, the output end of the digital potentiometer RT1 is used as the output end of the constant current circuit to supply power to the LED array, the in-phase end of the operational amplifier U6 is connected with the output end of the digital potentiometer RT1, the inverting end of the operational amplifier U6 is connected with the output end of the operational amplifier U6, the output end of the operational amplifier U6 is connected with the inverting end of the operational amplifier U5 through the resistor R3, the inverting end of the operational amplifier U5 is connected with the output end of the operational amplifier U5 after being connected in parallel with the resistor R2 and the capacitor C1, the output end of the operational amplifier U5 is connected with the inverting end of the operational amplifier U4, the in-phase end of the operational amplifier U5 is connected with the output end of the operational amplifier U4, and is used for providing stable working, corresponding to the lighting array and the decoration array respectively, the digital potentiometer RT1 of the constant current circuit adopts MAX5432 potentiometer chip, the digital potentiometer is controlled by the controller and is used for adjusting the resistance value, thereby adjusting the driving current, the controller receives the detection signal of the environment detection module, when the environment brightness does not meet the lighting requirement, the controller controls the electronic switch array to be conducted, and adjusts the resistance value of the digital potentiometer, thereby adjusting the lighting brightness, when the environment brightness is larger than the set value, the controller controls the decoration array not to work, the visibility sensor is used for detecting the smoke concentration, thereby judging the visibility of the street lamp, when the visibility is lower, the controller controls the yellow LED lighting array to work and to light, and when the visibility is lower, the controller controls the decoration array not to work, when the visibility is higher and when the ambient brightness is less than a definite value, the controller controls the decoration array to work, of course, the controller also receives the remote monitoring host control command through RS485, the remote monitoring host control command is used for controlling the decoration array to work and not work through the command, if the remote monitoring host outputs the control command to control the decoration array to work, at this moment, the controller does not consider the influence of the visibility, only consider the brightness state of the environment, as long as the brightness state is less than the set value, then the decoration array enters the working state, and by the mode, the traffic illumination and the decoration illumination can be rationalized, and the energy is saved.
In this embodiment, the environment detection module includes a visibility sensor and a light intensity sensor, and output terminals of the visibility sensor and the light intensity sensor are connected to an information input terminal of the controller, wherein: the controller is an STM32F030K6T6 chip; the RS485 communication circuit is an SN65LBC184DR chip and a peripheral circuit thereof, the visibility sensor adopts a GA1AS100WP sensor of Shenzhen Dongbao company, and the light intensity sensor adopts a TLS2561 sensor.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (8)
1. The utility model provides a LED intelligence street lamp and lamp decoration lighting control system which characterized in that: the intelligent power supply system comprises a controller, an online power taking circuit, a switch control circuit, a power supply conversion circuit, a constant current circuit, an electronic switch array, an environment detection module, an RS485 communication circuit, a concentrator and a remote monitoring host;
the on-line electricity taking circuit converts alternating current of commercial power into direct current, the input end of the switch control circuit is connected with the output end of the on-line electricity taking circuit, the output end of the switch control circuit is connected with the power supply conversion circuit, the power supply conversion circuit has 12V, 5V and 3.3V direct current outputs, and the constant current circuit is used for converting the 12V direct current into current and supplying the current to the LED array;
the LED array comprises an illumination array and a decorative lighting array, and the illumination array is provided with a yellow LED lamp YLED and a white LED array WLED; the lamp decoration array comprises three groups of red, yellow and blue LED arrays;
the electronic switch arrays are two groups and respectively correspond to the lighting LED array and the decorative LED array, and the number of the electronic switches of each group of electronic switch array is equal to the number of the color temperatures of the corresponding LED arrays;
the environment detection module is used for detecting the brightness and the visibility of the street lamp position, the output end of the detection module is connected with the controller, the controller is in communication connection with the concentrator through an RS485 communication circuit, the concentrator is in communication connection with the remote monitoring host, and the constant current circuits are in two groups and respectively correspond to the illumination array and the lamp decoration array.
2. The LED intelligent street lamp and lamp decoration illumination control system of claim 1, characterized in that: the switch control circuit comprises a resistor R13, a triode Q1, a PMOS tube Q2, an NMOS tube Q3, a resistor R16, a diode D6, an inductor L2, a voltage regulator tube D4, a resistor R14, a resistor R15, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C8, a capacitor C7, a voltage regulator tube D2, a voltage regulator tube D3, a comparator U2 and a comparator U3;
the source of a PMOS tube Q2 is used as the power input end of the switch control circuit and is connected with the output end of the on-line power taking circuit, the source of a PMOS tube Q2 is connected with the grid of a PMOS tube Q2 through a resistor R13, the grid of the PMOS tube Q2 is connected with the collector of a triode Q1, the emitter of a triode Q1 is grounded, the drain of the PMOS tube Q2 is connected with the drain of an NMOS tube Q3, the source of the NMOS tube Q3 is grounded, the drain of the PMOS tube Q2 is connected with the anode of a diode D6 through a resistor R16, and the cathode of the diode D6 is used as the power output end of the switch control circuit;
the inductor L2 is connected between the drain of the PMOS tube Q2 and the resistor R16 in series, the negative electrode of the voltage regulator tube D4 is connected to the common connection point between the inductor L2 and the drain of the PMOS tube Q2, the positive electrode of the voltage regulator tube D4 is grounded through the resistor R14, the positive electrode of the voltage regulator tube D4 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected to the grid of the NMOS tube Q3;
one end of a resistor R8 is connected with the output end of the on-line power-taking circuit, the other end of the resistor R8 is grounded after being connected in series with a resistor R9 and a resistor R10, a common connection point between the resistor R8 and the resistor R9 is grounded through a capacitor C8, a common connection point between the resistor R8 and the resistor R9 is connected with the negative electrode of a voltage regulator tube D3, the positive electrode of the voltage regulator tube D3 is grounded, a common connection point between the resistor R10 and the resistor R9 is grounded through a capacitor C7, a common connection point between the resistor R10 and the resistor R9 is connected with the negative electrode of a voltage regulator tube D2, and the positive electrode of the voltage regulator tube D2;
one end of a resistor R11 is connected with the output end of the online power-taking circuit, the other end of the resistor R11 is grounded through a resistor R12, a common connection point between the resistor R11 and the resistor R12 is respectively connected with the in-phase end of a comparator U2 and the inverting end of a comparator U3, the inverting end of the comparator U2 is connected with the common connection point between the resistor R8 and the resistor R9, the in-phase end of the comparator U3 is connected with the common connection point between the resistor R10 and the resistor R9, the output ends of the comparator U2 and the comparator U3 are connected with the input end of an AND gate circuit AD1, and the output end of the AND gate circuit AD1 is connected with the base of a triode Q1.
3. The LED intelligent street lamp and lamp decoration illumination control system of claim 2, characterized in that: the online power supply circuit comprises a transformer T1, a rectifying circuit REC, a capacitor C5, a capacitor C6, a resistor R7 and an operational amplifier U1;
the primary winding of the transformer T1 is connected with a mains supply, the secondary winding of the transformer T1 is connected with the input end of a rectifier circuit REC, the positive output end of the rectifier circuit REC is grounded through a capacitor C5, the negative output end of the rectifier circuit REC is grounded, a common connection point between the positive output end of the rectifier circuit REC and the capacitor C5 is connected with the in-phase end of an operational amplifier U1 through a resistor R7, the in-phase end of the operational amplifier U1 is grounded through a capacitor C6, the inverting end of the operational amplifier U1 is connected with the output end of an operational amplifier U1, and the output end of the operational amplifier U1 serves as the output end of an on-line electricity taking circuit.
4. The LED intelligent street lamp and lamp decoration illumination control system of claim 3, characterized in that: the power supply conversion circuit comprises a 12V voltage circuit, a 5V voltage circuit and a 3.3V voltage circuit, wherein the input end of the 12V voltage circuit is connected with the output end of the switch control circuit, the output end of the 12V voltage circuit is connected with the input end of the 5V voltage circuit, the output end of the 5V voltage circuit is connected with the input end of the 3.3V voltage circuit, the 12V voltage is used for supplying power to the constant current circuit, the 5V voltage is used for supplying working power to the detection module and the RS465 communication circuit, and the 3.3V voltage is used for supplying working power to the controller.
5. The LED intelligent street lamp and lamp decoration illumination control system of claim 4, characterized in that: the constant current circuit comprises a resistor R1, an operational amplifier U4, an operational amplifier U5, an operational amplifier U6, a resistor R2, a resistor R3, a capacitor C1 and a digital potentiometer RT 1;
one end of the resistor R1 is used as an input end of a constant current circuit, the other end of the resistor R1 is connected with a non-inverting end of the operational amplifier U4, an output end of the operational amplifier U4 is connected with an input end of a digital potentiometer RT1, an output end of the digital potentiometer RT1 is used as an output end of the constant current circuit to supply power to the LED array, the non-inverting end of the operational amplifier U6 is connected with an output end of the digital potentiometer RT1, an inverting end of the operational amplifier U6 is connected with an output end of the operational amplifier U6, an output end of the operational amplifier U6 is connected with an inverting end of the operational amplifier U5 through a resistor R3, an inverting end of the operational amplifier U5 is connected with an output end of the operational amplifier U5 after being connected with the resistor R2 and a capacitor C1 in parallel, an output end of the operational amplifier U5 is connected with an inverting end of the operational amplifier U4, and a non-inverting end of the operational amplifier.
6. The LED intelligent street lamp and lamp decoration illumination control system of claim 5, characterized in that: the environment detection module comprises a visibility sensor and a light intensity sensor, and the output ends of the visibility sensor and the light intensity sensor are connected with the information input end of the controller.
7. The LED intelligent street lamp and lamp decoration illumination control system of claim 6, characterized in that: the controller is an STM32F030K6T6 chip.
8. The LED intelligent street lamp and lamp illumination control system as claimed in claim 7, wherein: the RS485 communication circuit is an SN65LBC184DR chip and a peripheral circuit thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922476867.5U CN211831249U (en) | 2019-12-31 | 2019-12-31 | LED intelligent street lamp and decorative lighting control system |
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| CN201922476867.5U CN211831249U (en) | 2019-12-31 | 2019-12-31 | LED intelligent street lamp and decorative lighting control system |
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| CN211831249U true CN211831249U (en) | 2020-10-30 |
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