CN211860608U - Intelligent control system for multi-color temperature LED street lamp - Google Patents
Intelligent control system for multi-color temperature LED street lamp Download PDFInfo
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- CN211860608U CN211860608U CN201922489533.1U CN201922489533U CN211860608U CN 211860608 U CN211860608 U CN 211860608U CN 201922489533 U CN201922489533 U CN 201922489533U CN 211860608 U CN211860608 U CN 211860608U
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Abstract
The utility model provides a polychrome temperature LED street lamp intelligence control system, including detection module, controller, power supply protection control circuit, power supply converting circuit, constant current circuit, electronic switch module, lithium cell unit and LED array; through the structure, the color temperature of the LED street lamp can be automatically adjusted according to the luminous environment and the visibility state of the LED street lamp, so that the LED street lamp is in different color temperature states in different environments, the lighting requirement is met, in the working process of the LED, the power supply of the LED can be subjected to overvoltage and undervoltage detection and current transient detection and execution protection, the LED and the like are ensured to be always in a stable power supply state, the service life of the LED lamp is prolonged, and the service life of a control system is prolonged.
Description
Technical Field
The utility model relates to a LED street lamp control system especially relates to a polychrome temperature LED street lamp intelligence control system.
Background
Because the LED lamp has the advantages of energy conservation and long service life, the LED lamp is widely applied to street lamp illumination at present, and the existing street lamp illumination generally adopts monochromatic temperature illumination, for example: adopt single white light to throw light on, perhaps adopt single yellow light illumination, this kind of mode for the LED street lamp can not satisfy present demand to the illumination, thereby makes LED illumination street lamp's adaptability poor, and on the other hand, current LED street lamp adopts commercial power supply in the course of the work, and current commercial power supply system poor stability can not ensure power supply environment such as LED, thereby influences LED street lamp's life.
Therefore, in order to solve the above technical problems, it is necessary to provide a new technical means for solving the problems.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a many colour temperatures LED street lamp intelligence control system, can be according to the luminous environment of LED street lamp and the colour temperature of visibility state autonomic adjustment LED street lamp, thereby make the LED street lamp be in different colour temperature states under the environment of difference, thereby satisfy the lighting demands, and in the LED working process, can carry out excessive pressure undervoltage and current transient to LED's power supply and detect and carry out the protection, thereby ensure that LED etc. are in stable power supply state all the time, prolong the life of LED lamp and control system's life.
The utility model provides a polychrome temperature LED street lamp intelligence control system, including detection module, controller, power supply protection control circuit, power supply converting circuit, constant current circuit, electronic switch module, lithium cell unit and LED array;
the detection module is used for detecting the light intensity information and the visibility information of the position where the LED street lamp is located and outputting the light intensity information and the visibility information to the controller; the 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;
the input end of the power supply protection control circuit is connected with the mains supply, the output end of the power supply protection control circuit is connected with the input end of the power supply conversion circuit, and the power supply protection control circuit is used for converting the mains supply into direct current and outputting the direct current to the power supply conversion circuit, and converting the mains supply into the power supply of the lithium battery unit when the output current is over-current and the voltage is over-voltage or under-voltage;
the power supply conversion circuit is used for converting the direct current output by the power supply protection control circuit into low-voltage direct current and supplying the low-voltage direct current to the controller, the constant current circuit and the LED array;
the constant current circuit is used for converting the direct current voltage output by the power supply conversion circuit into direct current and supplying the direct current to the LED array;
the lithium battery unit is used for providing direct current for the power supply conversion circuit when the power supply protection control circuit performs protection;
the controller is used for receiving the control signal output by the power supply protection control circuit and the detection information output by the detection module, controlling the power supply protection control circuit to keep the lithium battery unit powered according to the control information output by the power supply protection control circuit, and controlling the electronic switch unit to switch and enable the LED array to work in different color temperature states according to the information output by the detection module;
and the LED array at least comprises a white color temperature LED array and a yellow color temperature LED array.
Further, the power supply protection control circuit comprises a transformer T1, a rectifier circuit REC, a preceding stage isolation circuit, a switch circuit, an overvoltage and undervoltage detection circuit, a lithium battery power supply switching circuit and a transient current detection circuit;
the primary winding of the transformer T1 is connected with the mains supply, the secondary winding of the transformer T1 is connected with the input end of the rectifier circuit REC, the positive output end of the rectifier circuit REC is connected with the input end of the preceding stage isolation circuit, the output end of the preceding stage isolation circuit is connected with the power input end of the switch circuit, the power output end of the switch circuit is connected with the input end of the power conversion circuit, the overvoltage and undervoltage detection circuit is used for detecting the input voltage of the switch circuit, the control output end of the overvoltage and undervoltage detection circuit is connected with the first control input end of the switch circuit, the transient current detection circuit is used for detecting the output current of the switch circuit, the control output end of the transient current detection circuit is connected with the second control input end of the switch circuit, the first control input end of the lithium battery power supply switching circuit is connected with the, the second control input end of the lithium battery power supply switching circuit is respectively connected with the control output ends of the transient current detection circuit and the overvoltage and undervoltage detection circuit, the power input end of the lithium battery power supply switching circuit is connected with the power output end of the lithium battery unit, and the power output end of the lithium battery power supply switching circuit is connected with the second input end of the power conversion circuit.
Further, the pre-stage isolation circuit comprises a capacitor C5, a capacitor C6, a resistor R7 and an operational amplifier U1;
one end of the resistor R7 is grounded through a capacitor C5, the other end of the resistor R7 is grounded through a capacitor C6, a common connection point of the resistor R7 and the capacitor C5 serves as an input end of a preceding stage isolation circuit and is connected with an output end of the rectifier circuit REC, a common connection point of the capacitor C6 and the resistor R7 is connected with a same-phase end of the operational amplifier U1, an inverting end of the operational amplifier U1 is connected with an output end of the operational amplifier U1, and an output end of the operational amplifier U1 serves as an output end of the preceding stage isolation circuit.
Further, the switch circuit comprises a resistor R13, a triode Q3, a PMOS tube Q4, an NMOS tube Q5, a resistor R16 and a diode D6;
the source of the PMOS transistor Q4 is used as the power input terminal of the switch circuit, the source of the PMOS transistor Q4 is connected with the gate of the PMOS transistor Q4 through a resistor R13, the gate of the PMOS transistor Q4 is connected with the collector of the transistor Q3, the emitter of the transistor Q3 is grounded, the base of the transistor Q3 is used as the first control input terminal of the switch control circuit, the drain of the PMOS transistor Q4 is connected with the drain of the NMOS transistor Q5, the source of the NMOS transistor Q5 is grounded, the gate of the NMOS transistor Q5 is used as the second control input terminal of the switch circuit, the drain of the PMOS transistor Q4 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 terminal of the.
Further, the transient current detection circuit comprises an inductor L2, a voltage regulator tube D4, a resistor R14 and a resistor R15;
the inductor L2 is connected between the drain of the PMOS tube Q4 and the resistor R16 in series, the cathode of the voltage regulator tube D4 is connected to the common connection point between the inductor L2 and the drain of the PMOS tube Q4, the anode of the voltage regulator tube D4 is grounded through the resistor R14, the anode of the voltage regulator tube D4 is connected with one end of the resistor R14, and the other end of the resistor R14 serving as the output end of the transient current detection circuit is connected with the second control input end of the switch circuit.
Further, the overvoltage and undervoltage detection circuit comprises 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;
one end of a resistor R8 is connected with the output end of the preceding stage isolation 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 is grounded;
one end of a resistor R11 is connected with the output end of a preceding stage isolation circuit, the other end of a resistor R11 is grounded through a resistor R12, a common connection point between the resistor R11 and the resistor R12 is respectively connected with a same-phase end of a comparator U2 and an inverted-phase end of a comparator U3, an inverted-phase end of the comparator U2 is connected with a common connection point between the resistor R8 and a resistor R9, a same-phase end of the comparator U3 is connected with a common connection point between a resistor R10 and a resistor R9, output ends of the comparator U2 and a 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 first control input end of the switch circuit as a control output end of the overvoltage decompression detection 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 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 and charging the lithium battery unit, the 5V voltage is used for supplying working power to the detection module, the 3.3V voltage is used for supplying working power to the controller, and the input unit of the 5V voltage circuit is also connected with the power output end of the lithium battery power supply switching circuit.
Further, the lithium battery power supply switching circuit comprises a resistor R4, a resistor R5, a resistor R6, a triode Q1, a triode Q2 and a diode D1;
the emitting electrode of triode Q2 passes through resistance R6 and is connected with lithium cell's power output terminal, and the collecting electrode of triode Q2 is as lithium cell power supply switching unit's power output terminal, triode Q2's base is passed through resistance R4 and is connected with lithium cell's power output terminal, and triode Q2's base is connected with triode Q1's collecting electrode, and triode Q1's emitting electrode passes through resistance R6 ground connection, and triode Q1's base is connected with diode D1's negative pole, and diode D1's positive pole is as lithium cell power supply switching unit's first control input, and triode Q1's base is as lithium cell power supply switching unit's second control input.
Further, the constant current circuit comprises a resistor R1, an operational amplifier U1, an operational amplifier U2, an operational amplifier U3, 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, lithium battery unit includes 12V lithium cell and lithium cell management chip, lithium cell management chip is used for managing the charging and discharging of lithium cell, lithium cell management chip still with controller communication connection, wherein, lithium cell management chip is the MP2636 chip.
The utility model has the advantages that: through the utility model discloses, can be according to the luminous environment of LED street lamp and the colour temperature of the autonomic adjustment LED street lamp of visibility state to make the LED street lamp be in different colour temperature states under the environment of difference, thereby satisfy the lighting demands, moreover in the LED working process, can carry out excessive pressure undervoltage and current transient to the power supply of LED and detect and carry out the protection, thereby ensure that LED etc. are in stable power supply state all the time, prolong the life of LED lamp and control system's life.
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 power supply of the present invention.
Fig. 3 is a schematic diagram of the power supply protection control circuit of the present invention.
Fig. 4 is a schematic diagram of the 12V voltage circuit of the present invention.
Fig. 5 is a schematic diagram of the 5V voltage circuit of the present invention.
Fig. 6 is a schematic diagram of the 3.3V voltage circuit of the present invention.
Fig. 7 is a schematic diagram of a lithium battery power supply switching circuit of the present invention.
Fig. 8 is a schematic diagram of the constant current circuit of the present invention.
Fig. 9 is a schematic diagram of the controller of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings in the specification:
the utility model provides a polychrome temperature LED street lamp intelligence control system, including detection module, controller, power supply protection control circuit, power supply converting circuit, constant current circuit, electronic switch module, lithium cell unit and LED array;
the detection module is used for detecting the light intensity information and the visibility information of the position where the LED street lamp is located and outputting the light intensity information and the visibility information to the controller; the 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; wherein, the light intensity sensor is a TLS2561 sensor, and the visibility sensor adopts a GA1AS100WP sensor of Shenzhen Dongbao company;
the input end of the power supply protection control circuit is connected with the mains supply, the output end of the power supply protection control circuit is connected with the input end of the power supply conversion circuit, and the power supply protection control circuit is used for converting the mains supply into direct current and outputting the direct current to the power supply conversion circuit, and converting the mains supply into the power supply of the lithium battery unit when the output current is over-current and the voltage is over-voltage or under-voltage;
the power supply conversion circuit is used for converting the direct current output by the power supply protection control circuit into low-voltage direct current and supplying the low-voltage direct current to the controller, the constant current circuit and the LED array;
the constant current circuit is used for converting the direct current voltage output by the power supply conversion circuit into direct current and supplying the direct current to the LED array;
the lithium battery unit is used for providing direct current for the power supply conversion circuit when the power supply protection control circuit performs protection;
the controller is used for receiving the control signal output by the power supply protection control circuit and the detection information output by the detection module, controlling the power supply protection control circuit to keep the lithium battery unit powered according to the control information output by the power supply protection control circuit, and controlling the electronic switch unit to switch and enable the LED array to work in different color temperature states according to the information output by the detection module;
the LED array at least comprises a white color temperature LED array and a yellow color temperature LED array, wherein the controller adopts an STM32F030K6T6 chip, the electronic switch module consists of a plurality of semiconductor switch devices, such as triodes and MOS tubes, the number of the switch devices is the same as that of the LED arrays, and the switch devices are used for controlling the on-off of the power supply of the LED arrays, the LED arrays not only comprise the color temperature arrays, but also can be provided with other color temperature arrays, through the structure, the color temperature of the LED street lamp can be automatically adjusted according to the luminous environment and the visibility state of the LED street lamp, namely, white light is adopted when the visibility is good, yellow light is adopted when the visibility is poor, so that the LED street lamp is in different color temperature states under different environments, the illumination requirement is met, in the working process of the LED, the power supply of the LED can be subjected to undervoltage and overvoltage and current transient detection and protection, so that, the service life of the LED lamp and the service life of the control system are prolonged.
In this embodiment, the power supply protection control circuit includes a transformer T1, a rectifier circuit REC, a preceding stage isolation circuit, a switching circuit, an overvoltage and undervoltage detection circuit, a lithium battery power supply switching circuit, and a transient current detection circuit;
the primary winding of the transformer T1 is connected with the mains supply, the secondary winding of the transformer T1 is connected with the input end of the rectifier circuit REC, the positive output end of the rectifier circuit REC is connected with the input end of the preceding stage isolation circuit, the output end of the preceding stage isolation circuit is connected with the power input end of the switch circuit, the power output end of the switch circuit is connected with the input end of the power conversion circuit, the overvoltage and undervoltage detection circuit is used for detecting the input voltage of the switch circuit, the control output end of the overvoltage and undervoltage detection circuit is connected with the first control input end of the switch circuit, the transient current detection circuit is used for detecting the output current of the switch circuit, the control output end of the transient current detection circuit is connected with the second control input end of the switch circuit, the first control input end of the lithium battery power supply switching circuit is connected with the, the second control input end of the lithium battery power supply switching circuit is respectively connected with the control output ends of the transient current detection circuit and the overvoltage and undervoltage detection circuit, the power input end of the lithium battery power supply switching circuit is connected with the power output end of the lithium battery unit, the power output end of the lithium battery power supply switching circuit is connected with the second input end of the power supply switching circuit, the rectifying circuit REC adopts a full-bridge rectifying circuit formed by the existing diodes, and by means of the structure, stable and reliable working electricity can be provided for the LED array, the controller and the like.
In this embodiment, the pre-stage isolation circuit includes a capacitor C5, a capacitor C6, a resistor R7, and an operational amplifier U1;
one end of the resistor R7 is grounded through a capacitor C5, the other end of the resistor R7 is grounded through a capacitor C6, a common connection point of the resistor R7 and the capacitor C5 serves as an input end of a preceding stage isolation circuit and is connected with an output end of the rectifier circuit REC, a common connection point of the capacitor C6 and the resistor R7 is connected with a same-phase end of the operational amplifier U1, an inverting end of the operational amplifier U1 is connected with an output end of the operational amplifier U1, and an output end of the operational amplifier U1 serves as an output end of the preceding stage isolation circuit, wherein the capacitor C5, the capacitor C6 and the resistor R7 form a filter circuit, the resistor R7 is further used for current limiting and voltage division, and the operational amplifier U1 forms a voltage follower for stabilizing voltage and forms isolation by using a high input impedance characteristic of the operational amplifier, so that a.
In this embodiment, the switch circuit includes a resistor R13, a transistor Q3, a PMOS transistor Q4, an NMOS transistor Q5, a resistor R16, and a diode D6;
the source of the PMOS transistor Q4 is used as the power input terminal of the switch circuit, the source of the PMOS transistor Q4 is connected with the gate of the PMOS transistor Q4 through a resistor R13, the gate of the PMOS transistor Q4 is connected with the collector of the transistor Q3, the emitter of the transistor Q3 is grounded, the base of the transistor Q3 is used as the first control input terminal of the switch control circuit, the drain of the PMOS transistor Q4 is connected with the drain of the NMOS transistor Q5, the source of the NMOS transistor Q5 is grounded, the gate of the NMOS transistor Q5 is used as the second control input terminal of the switch circuit, the drain of the PMOS transistor Q4 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 terminal of the.
The transient current detection circuit comprises an inductor L2, a voltage regulator tube D4, a resistor R14 and a resistor R15;
the inductor L2 is connected between the drain of the PMOS tube Q4 and the resistor R16 in series, the cathode of the voltage regulator tube D4 is connected to the common connection point between the inductor L2 and the drain of the PMOS tube Q4, the anode of the voltage regulator tube D4 is grounded through the resistor R14, the anode of the voltage regulator tube D4 is connected with one end of the resistor R14, and the other end of the resistor R14 serving as the output end of the transient current detection circuit is connected with the second control input end of the switch circuit.
The overvoltage and undervoltage detection circuit comprises 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, an AND gate circuit AD1, a comparator U2 and a comparator U3;
one end of a resistor R8 is connected with the output end of the preceding stage isolation 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 is grounded;
one end of a resistor R11 is connected with an output end of a preceding stage isolation circuit, the other end of the resistor R11 is grounded through a resistor R12, a common connection point between a resistor R11 and a resistor R12 is respectively connected with a non-inverting end of a comparator U2 and an inverting end of a comparator U3, an inverting end of a comparator U2 is connected with a common connection point between a resistor R8 and a resistor R9, a non-inverting end of a comparator U3 is connected with a common connection point between a resistor R10 and a resistor R9, output ends of a comparator U2 and a comparator U3 are connected with an input end of an AND gate AD1, an output end of the AND gate AD1 is used as a control output end of an overvoltage and undervoltage reduction detection circuit and is connected with a first control input end of a switch circuit, wherein the comparator U2 is used for judging whether overvoltage exists or not, the comparator U3 is used for judging whether or not, when the voltage does not exist, the comparator U2 and the comparator U3 both output a low level and the AD1, the transistor Q3 is turned on, so that the grid voltage of the PMOS tube Q4 is pulled down, the PMOS tube Q4 is turned on, the NMOS tube Q5 is cut off, the switch circuit has output, when overvoltage or undervoltage occurs, the comparator U2 or the comparator U3 outputs high level, the AND gate circuit AD1 outputs low level, the transistor Q3 is cut off, the grid source voltage of the PMOS tube Q4 is equal, the PMOS tube Q4 is cut off, output is stopped, when current is transient and becomes large, high voltage is induced at the left end of the inductor L2, the voltage regulator D4 is turned on, so that the NMOS tube Q5 is turned on, the subsequent circuit is short-circuited, current transient protection is performed, impact of transient current is eliminated, after the NMOS tube Q5 is turned on, the induced voltage of the inductor L2 disappears, the NMOS tube Q5 is cut off again, the inductor L2 is continuously powered on, the inductor L2 has the effect of current delay, at this time, the current obtained by the subsequent circuit is still small, at this time, if the current is still too large, due to the voltage dividing effect of the resistor R11 and the resistor R12, the overvoltage and undervoltage detection circuit participates in detection, so that the PMOS tube Q4 is controlled to be cut off according to the control logic of the PMOS tube Q4, protection is achieved, although the current is increased, the divided voltages of the resistors R8, R9 and R10 are increased, due to the fact that the current is adopted, the divided voltages of the resistor R8, the resistor R9 and the resistor R10 are increased in proportion, the reference voltage provided by the resistor R8, the resistor R9 and the resistor R10 is increased in proportion, the voltage clamping effect of the voltage stabilizing tube D3 and the voltage stabilizing tube D2 is used for restraining the reference voltage within a safety range, and overvoltage detection control is achieved.
In this embodiment, the power conversion circuit includes a 12V voltage circuit, a 5V voltage circuit and a 3.3V voltage circuit, an input terminal of the 12V voltage circuit is connected to an output terminal of the switch circuit, an output terminal of the 12V voltage circuit is connected to an input terminal of the 5V voltage circuit, an output terminal of the 5V voltage circuit is connected to an input terminal of the 3.3V voltage circuit, the 12V voltage is used for supplying power to the constant current circuit and charging the lithium battery cell, the 5V voltage is used for supplying working power to the detection module, the 3.3V voltage is used for supplying working power to the controller, an input unit of the 5V voltage circuit is further connected to a power output terminal of the lithium battery power supply switching circuit, wherein the 12V voltage circuit employs an LM2 voltage chip, the 5V voltage circuit employs an LM2596 voltage chip, the 3.3V voltage circuit employs an SGM2202-3.3 voltage chip, and by the above circuits, for supplying stable operating power to the load.
In this embodiment, the lithium battery power supply switching circuit includes a resistor R4, a resistor R5, a resistor R6, a transistor Q1, a transistor Q2, and a diode D1;
an emitter of the triode Q2 is connected with the power output end of the lithium battery unit through a resistor R6, a collector of the triode Q2 is used as the power output end of the lithium battery power supply switching unit, a base of the triode Q2 is connected with the power output end of the lithium battery unit through a resistor R4, a base of the triode Q2 is connected with a collector of the triode Q1, an emitter of the triode Q1 is grounded through a resistor R6, a base of the triode Q1 is connected with a cathode of the diode D1, an anode of the diode D1 is used as a first control input end of the lithium battery power supply switching unit, a base of the triode Q1 is used as a second control input end of the lithium battery power supply switching unit, a base of the triode Q1 is further connected with a second control output end of the comparator U2 and the comparator U3 as a second control output end of the overvoltage and undervoltage detection circuit, and is connected with a base of the NMOS tube Q58, triode Q1 is in cut-off state, at this time, the base and drain voltages of triode Q2 are equal, cut-off, the lithium battery is not powered, when overvoltage, undervoltage or current transformation transient increases, triode Q1 is conducted, so that triode Q2 is conducted, the lithium battery supplies power, the overvoltage and undervoltage detection circuit also provides detection signals for the controller, namely, the detection signals are realized through diode D7 and triode Q6, when no overvoltage, undervoltage and current transient increase, the pin of the controller connected with the collector of triode Q6 is set to low level, when overvoltage, undervoltage or current transient increase, the pin of the controller is set to high level, the controller outputs high level signals for maintaining the conduction of triode Q1 through diode D1, meanwhile, the controller also sends low level signals for maintaining the cut-off of triode Q3 to the base of triode Q3, the low level signals for maintaining the cut-off of triode Q3 are realized through triode Q7, the controller controls the triode Q7 to be conducted, and the base level of the triode Q3 is pulled down, namely the collector of the triode Q7 is connected with the base of the triode Q3, and the emitter of the triode Q7 is grounded; therefore, the power supply of the lithium battery is maintained, certainly, the controller cannot control the lithium battery to be in a power supply state all the time, the battery management chip can send the current battery power state to the controller, when the power of the battery is lower than a certain degree, the controller controls the triode Q7 to be cut off, whether a pin corresponding to a collector of the triode Q7 is a high level or not is judged again, if not, the fact that the mains supply is recovered to be normal is indicated, and a low level is output to the triode Q1.
In this embodiment, the constant current circuit includes a resistor R1, an operational amplifier U1, an operational amplifier U2, an operational amplifier U3, 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 a 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 a 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 a 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, wherein, the operational amplifier U1 can provide, the output current of the constant current circuit can be adjusted, namely: the current of the constant current circuit is not constant all the time, but the current keeps stable after the resistance value of the digital potentiometer RT1 is fixed, if the resistance value of RT1 is adjusted, the output current also changes into a new current value, then the output current is stable on the new current value, and the controller controls the resistance value of the digital potentiometer RT1 according to the illumination intensity value of the illumination intensity sensor, so that the purpose of controlling the brightness of the LED array is achieved; the digital potentiometer RT1 adopts a MAX5432 potentiometer chip.
In this embodiment, lithium battery unit includes 12V lithium cell and lithium cell management chip, lithium cell management chip is used for managing the charging and discharging of lithium cell, lithium cell management chip still with controller communication connection, wherein, lithium cell management chip is the MP2636 chip, and wherein, battery management chip MP2636 and peripheral circuit are prior art, and battery management chip is used for managing the charging, discharging of lithium cell, prevents to cross to charge, cross to discharge.
It should be noted that: each chip in the above description has a corresponding pin specification and an existing typical peripheral circuit, and those skilled in the art can build the peripheral circuit according to the typical peripheral circuit of the chip, and perform the function definition of the pin according to the specification of the chip and the actual need, which belongs to the prior art.
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 (10)
1. The utility model provides a polychrome temperature LED street lamp intelligence control system which characterized in that: the LED power supply device comprises a detection module, a controller, a power supply protection control circuit, a power supply conversion circuit, a constant current circuit, an electronic switch module, a lithium battery unit and an LED array;
the detection module is used for detecting the light intensity information and the visibility information of the position where the LED street lamp is located and outputting the light intensity information and the visibility information to the controller; the 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;
the input end of the power supply protection control circuit is connected with the mains supply, the output end of the power supply protection control circuit is connected with the input end of the power supply conversion circuit, and the power supply protection control circuit is used for converting the mains supply into direct current and outputting the direct current to the power supply conversion circuit, and converting the mains supply into the power supply of the lithium battery unit when the output current is over-current and the voltage is over-voltage or under-voltage;
the power supply conversion circuit is used for converting the direct current output by the power supply protection control circuit into low-voltage direct current and supplying the low-voltage direct current to the controller, the constant current circuit and the LED array;
the constant current circuit is used for converting the direct current voltage output by the power supply conversion circuit into direct current and supplying the direct current to the LED array;
the lithium battery unit is used for providing direct current for the power supply conversion circuit when the power supply protection control circuit performs protection;
the controller is used for receiving the control signal output by the power supply protection control circuit and the detection information output by the detection module, controlling the power supply protection control circuit to keep the lithium battery unit powered according to the control information output by the power supply protection control circuit, and controlling the electronic switch unit to switch and enable the LED array to work in different color temperature states according to the information output by the detection module;
and the LED array at least comprises a white color temperature LED array and a yellow color temperature LED array.
2. The intelligent control system for the multi-color-temperature LED street lamp according to claim 1, characterized in that: the power supply protection control circuit comprises a transformer T1, a rectifier circuit REC, a preceding stage isolation circuit, a switch circuit, an overvoltage and undervoltage detection circuit, a lithium battery power supply switching circuit and a transient current detection circuit;
the primary winding of the transformer T1 is connected with the mains supply, the secondary winding of the transformer T1 is connected with the input end of the rectifier circuit REC, the positive output end of the rectifier circuit REC is connected with the input end of the preceding stage isolation circuit, the output end of the preceding stage isolation circuit is connected with the power input end of the switch circuit, the power output end of the switch circuit is connected with the input end of the power conversion circuit, the overvoltage and undervoltage detection circuit is used for detecting the input voltage of the switch circuit, the control output end of the overvoltage and undervoltage detection circuit is connected with the first control input end of the switch circuit, the transient current detection circuit is used for detecting the output current of the switch circuit, the control output end of the transient current detection circuit is connected with the second control input end of the switch circuit, the first control input end of the lithium battery power supply switching circuit is connected with the, the second control input end of the lithium battery power supply switching circuit is respectively connected with the control output ends of the transient current detection circuit and the overvoltage and undervoltage detection circuit, the power input end of the lithium battery power supply switching circuit is connected with the power output end of the lithium battery unit, and the power output end of the lithium battery power supply switching circuit is connected with the second input end of the power conversion circuit.
3. The intelligent control system for the multi-color-temperature LED street lamp according to claim 2, characterized in that: the pre-stage isolation circuit comprises a capacitor C5, a capacitor C6, a resistor R7 and an operational amplifier U1;
one end of the resistor R7 is grounded through a capacitor C5, the other end of the resistor R7 is grounded through a capacitor C6, a common connection point of the resistor R7 and the capacitor C5 serves as an input end of a preceding stage isolation circuit and is connected with an output end of the rectifier circuit REC, a common connection point of the capacitor C6 and the resistor R7 is connected with a same-phase end of the operational amplifier U1, an inverting end of the operational amplifier U1 is connected with an output end of the operational amplifier U1, and an output end of the operational amplifier U1 serves as an output end of the preceding stage isolation circuit.
4. The intelligent control system for the multi-color-temperature LED street lamp according to claim 2, characterized in that: the switch circuit comprises a resistor R13, a triode Q3, a PMOS tube Q4, an NMOS tube Q5, a resistor R16 and a diode D6;
the source of the PMOS transistor Q4 is used as the power input terminal of the switch circuit, the source of the PMOS transistor Q4 is connected with the gate of the PMOS transistor Q4 through a resistor R13, the gate of the PMOS transistor Q4 is connected with the collector of the transistor Q3, the emitter of the transistor Q3 is grounded, the base of the transistor Q3 is used as the first control input terminal of the switch control circuit, the drain of the PMOS transistor Q4 is connected with the drain of the NMOS transistor Q5, the source of the NMOS transistor Q5 is grounded, the gate of the NMOS transistor Q5 is used as the second control input terminal of the switch circuit, the drain of the PMOS transistor Q4 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 terminal of the.
5. The intelligent control system for the multi-color-temperature LED street lamp according to claim 4, characterized in that: the transient current detection circuit comprises an inductor L2, a voltage regulator tube D4, a resistor R14 and a resistor R15;
the inductor L2 is connected between the drain of the PMOS tube Q4 and the resistor R16 in series, the cathode of the voltage regulator tube D4 is connected to the common connection point between the inductor L2 and the drain of the PMOS tube Q4, the anode of the voltage regulator tube D4 is grounded through the resistor R14, the anode of the voltage regulator tube D4 is connected with one end of the resistor R14, and the other end of the resistor R14 serving as the output end of the transient current detection circuit is connected with the second control input end of the switch circuit.
6. The intelligent control system for the multi-color-temperature LED street lamp according to claim 2, characterized in that: the overvoltage and undervoltage detection circuit comprises 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;
one end of a resistor R8 is connected with the output end of the preceding stage isolation 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 is grounded;
one end of a resistor R11 is connected with the output end of a preceding stage isolation circuit, the other end of a resistor R11 is grounded through a resistor R12, a common connection point between the resistor R11 and the resistor R12 is respectively connected with a same-phase end of a comparator U2 and an inverted-phase end of a comparator U3, an inverted-phase end of the comparator U2 is connected with a common connection point between the resistor R8 and a resistor R9, a same-phase end of the comparator U3 is connected with a common connection point between a resistor R10 and a resistor R9, output ends of the comparator U2 and a 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 first control input end of the switch circuit as a control output end of the overvoltage decompression detection circuit.
7. The intelligent control system for the multi-color-temperature LED street lamp according to claim 2, 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 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 and charging the lithium battery unit, the 5V voltage is used for supplying working power to the detection module, the 3.3V voltage is used for supplying working power to the controller, and the input end of the 5V voltage circuit is further connected with the power supply output end of the lithium battery power supply switching circuit.
8. The intelligent control system for the multi-color-temperature LED street lamp according to claim 7, characterized in that: the lithium battery power supply switching circuit comprises a resistor R4, a resistor R5, a resistor R6, a triode Q1, a triode Q2 and a diode D1;
the emitting electrode of triode Q2 passes through resistance R6 and is connected with lithium cell's power output terminal, and the collecting electrode of triode Q2 is as lithium cell power supply switching unit's power output terminal, triode Q2's base is passed through resistance R4 and is connected with lithium cell's power output terminal, and triode Q2's base is connected with triode Q1's collecting electrode, and triode Q1's emitting electrode passes through resistance R6 ground connection, and triode Q1's base is connected with diode D1's negative pole, and diode D1's positive pole is as lithium cell power supply switching unit's first control input, and triode Q1's base is as lithium cell power supply switching unit's second control input.
9. The intelligent control system for the multi-color-temperature LED street lamp according to claim 2, 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.
10. The intelligent control system for the multi-color-temperature LED street lamp according to claim 1, characterized in that: the lithium battery unit comprises a 12V lithium battery and a lithium battery management chip, wherein the lithium battery management chip is used for managing the charging and discharging of the lithium battery, the lithium battery management chip is also in communication connection with the controller, and the lithium battery management chip is an MP2636 chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922489533.1U CN211860608U (en) | 2019-12-31 | 2019-12-31 | Intelligent control system for multi-color temperature LED street lamp |
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| CN201922489533.1U CN211860608U (en) | 2019-12-31 | 2019-12-31 | Intelligent control system for multi-color temperature LED street lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069825A (en) * | 2021-10-28 | 2022-02-18 | 国家电网有限公司 | Multi-output power direct current system |
| CN116633162A (en) * | 2023-03-31 | 2023-08-22 | 宁远县硕宁电子有限公司 | Programmable voltage output circuit and adapter thereof |
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2019
- 2019-12-31 CN CN201922489533.1U patent/CN211860608U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069825A (en) * | 2021-10-28 | 2022-02-18 | 国家电网有限公司 | Multi-output power direct current system |
| CN116633162A (en) * | 2023-03-31 | 2023-08-22 | 宁远县硕宁电子有限公司 | Programmable voltage output circuit and adapter thereof |
| CN116633162B (en) * | 2023-03-31 | 2024-05-10 | 宁远县硕宁电子有限公司 | Programmable voltage output circuit and adapter thereof |
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