CN109714856B - Intelligent control system of three-primary-color multi-color-temperature LED street lamp based on environment detection - Google Patents
Intelligent control system of three-primary-color multi-color-temperature LED street lamp based on environment detection Download PDFInfo
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- CN109714856B CN109714856B CN201811612065.6A CN201811612065A CN109714856B CN 109714856 B CN109714856 B CN 109714856B CN 201811612065 A CN201811612065 A CN 201811612065A CN 109714856 B CN109714856 B CN 109714856B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention provides an intelligent control system of a tricolor multi-color temperature LED street lamp based on environment detection, which comprises an environment detection unit and an LED drive control unit, wherein the environment detection unit is used for detecting the environment of the LED street lamp; the LED driving control unit comprises a surge protection circuit, a rectifying circuit, a preceding stage power supply circuit, a main controller, a three-primary-color LED lamp, an LED control circuit, a first voltage stabilizing circuit and a second voltage stabilizing circuit; the environment detection unit comprises a traffic flow sensor, an air particulate matter sensor, a temperature and humidity sensor, a brightness sensor, a rainwater sensor and an environment processing circuit; on the one hand, the LED street lamp can provide stable direct current for an LED array in the LED street lamp, so that the LED street lamp can continuously and stably operate, on the other hand, the current environment condition can be detected in real time, the illumination brightness and the color temperature can be adaptively adjusted according to the detected environment parameters, different traffic conditions can be adapted, and the energy consumption can be effectively saved.
Description
Technical Field
The invention relates to the field of illumination, in particular to an intelligent control system of a three-primary-color multi-color-temperature LED street lamp based on environment detection.
Background
With the development of the LED technology, the LED technology is also widely used for lighting, such as LED street lamps, LED table lamps, etc., because the LEDs have the advantages of strong shock resistance, small heat productivity, low energy consumption, long service life, etc., the LEDs are widely used for street lamp lighting, and the energy consumption is reduced for urban lighting, and the following problems exist in the existing urban LED street lamps: the stability of a driving control circuit of an existing LED street lamp is poor, so that the service life of the LED lamp is far short of the rated service life of the LED lamp, and on the other hand, the existing LED street lamp usually adopts a fixed color temperature and brightness for illumination, for example, yellow light illumination is adopted, the brightness of the street lamp is always the same brightness, the color temperature is single, the traffic requirements cannot be met, traffic accidents occur due to illumination, and energy is wasted.
In order to solve the above technical problem, a new solution is continuously proposed.
Disclosure of Invention
In view of this, an object of the present invention is to provide an intelligent control system for a three-primary-color multi-color-temperature LED street lamp based on environmental detection, which can provide stable direct current for an LED array in the LED street lamp to ensure that the LED street lamp can operate continuously and stably, can detect the current environmental condition in real time, can adaptively adjust the illumination brightness and color temperature according to the detected environmental parameters, can adapt to different traffic conditions, and can effectively save energy consumption.
The invention provides an intelligent control system of a tricolor multi-color temperature LED street lamp based on environment detection, which comprises an environment detection unit and an LED drive control unit, wherein the environment detection unit is used for detecting the environment of the LED street lamp;
the LED driving control unit comprises a surge protection circuit, a rectifying circuit, a preceding stage power supply circuit, a main controller, a three-primary-color LED lamp, an LED control circuit, a first voltage stabilizing circuit and a second voltage stabilizing circuit;
the input end of the surge protection circuit is connected with a mains supply, the output end of the surge protection circuit is connected with the input end of the rectification circuit, the output end of the rectification circuit is connected with the input end of the preceding power supply circuit, the output end of the preceding power supply circuit is respectively connected with the input ends of the first voltage stabilizing circuit and the second voltage stabilizing circuit, the first voltage stabilizing circuit outputs 5V direct current to supply power to the master controller, the LED control circuit and the preceding power supply circuit, the output end of the second voltage stabilizing circuit outputs 9V direct current VCC1 to supply power to the LED control circuit, the control end of the LED control circuit is connected with a master control electrical appliance, and the control end of the preceding power supply circuit is connected with the;
the environment detection unit comprises a traffic flow sensor, an air particulate matter sensor, a temperature and humidity sensor, a brightness sensor, a rainwater sensor and an environment processing circuit;
the output and the environment processing circuit of traffic flow sensor, air particulate matter sensor, luminance sensor, temperature and humidity sensor and rainwater sensor are connected, environment processing circuit and master controller communication connection, traffic flow sensor, air particulate matter sensor, luminance sensor, temperature and humidity sensor and rainwater sensor are supplied power by first voltage stabilizing circuit, the environment processing circuit is supplied power by first voltage stabilizing circuit.
Further, the three-primary-color LED lamp comprises a red LED array, a yellow LED array and a white LED array, the three LED control circuits are of the same structure, and control the red LED array, the yellow LED array and the white LED array to emit light and brightness respectively;
the LED control circuit comprises a resistor R15, a resistor R16, a digital potentiometer RT2, a triode Q4, a triode Q5, a diode D1, a silicon controlled rectifier SCR1, a resistor R13, a resistor R24, a resistor R25, a resistor R26, an operational amplifier U5, an operational amplifier U6, an operational amplifier U7 and a capacitor C4;
one end of the resistor R15 is connected with a 5V direct current power supply, the other end of the resistor R15 is connected with the collector of the triode Q4, the emitter of the triode Q4 is connected with the control electrode of the silicon controlled SCR1, the base electrode of the triode Q4 is connected with the resistor R16, the other end of the resistor R16 is connected with the main controller as the first control end CON1 of the LED control circuit, the anode of the SCR1 is connected with the output end of a digital potentiometer RT2, the input end of the digital potentiometer RT2 is connected with the output end of an operational amplifier U5, the control end of the digital potentiometer RT2 is connected with a master controller, the negative electrode of the controlled silicon SCR1 is connected with the input end of the LED array of the tricolor LED and the like, the positive electrode of the controlled silicon SCR1 is also connected with the collector of a triode Q5, the emitter of the triode Q5 is grounded, the base of the triode Q5 is connected with the negative electrode of a diode D1 through a resistor R13, and the positive electrode of a diode D1 is connected with a master controller as a second control end CON2 of the LED control circuit;
the in-phase end of the operational amplifier U5 is connected to a power supply VCC1 through a resistor R24, the in-phase end of the operational amplifier U7 is connected to a common connection point between a digital potentiometer RT2 and a silicon controlled rectifier SCR1, the output end of the operational amplifier U7 is connected to the inverting end of the operational amplifier U6 through a resistor R25, the inverting end of the operational amplifier U7 is directly connected to the output end of the operational amplifier U7, the inverting end of the operational amplifier U6 is connected to the output end of the operational amplifier U6 through a resistor R26 and a capacitor C4 in parallel, the output end of the operational amplifier U6 is connected to the inverting end of the operational amplifier U5, and the in-phase end of the operational amplifier U6 is connected to the output end of the operational amplifier U5.
Further, the preceding stage power supply circuit comprises a resistor R1, an operational amplifier U1, a resistor R3, a triode Q1, a resistor R5, a controllable precision voltage-stabilizing source U2, a resistor R10, a capacitor C1, a digital potentiometer RT1, a diode D3, a capacitor C2 and a voltage-stabilizing tube DW 1;
one end of the resistor R1 is used as an input end of a preceding stage power supply circuit and is connected with an output end of the rectifying circuit, the other end of the resistor R1 is connected with a non-inverting end of the operational amplifier U1, an inverting end of the operational amplifier U1 is directly connected with an output end of the operational amplifier U1 to form a voltage follower, an output end of the operational amplifier U1 is connected with a collector of a triode Q1 through a resistor R3, an emitter of the triode Q1 is connected with an anode of a diode D3, a cathode of the diode D3 is grounded through a capacitor C2, a cathode of the diode D3 is connected with a cathode of a voltage regulator DW1, an anode of the voltage regulator DW1 is grounded, a common connection point between the triode Q1 and a voltage regulator DW 9 is used as an output end of the preceding stage power supply circuit, a collector of the triode Q1 is connected with a base of a triode Q1 through a resistor R5, a base of the triode Q1 is connected with a cathode of a controllable precision voltage regulator U2, an anode of the controllable precision voltage regulator U2, the output end of the digital potentiometer RT1 is grounded through a resistor R10, a common connection point between the digital potentiometer RT1 and the resistor R10 is connected with the reference pole of a controllable precision voltage-stabilizing source U2, and the emitter of the triode Q1 is connected with the reference pole of the controllable precision voltage-stabilizing source U2 through a capacitor C1.
Further, the preceding-stage power supply circuit further comprises a standby circuit, wherein the standby circuit comprises a resistor R2, a resistor R4, a resistor R6, a resistor R8, a resistor R7, a resistor R9, a resistor R11, a resistor R14, a resistor R17, a resistor R18, a resistor R19, a controllable precision voltage-stabilizing source U3, an operational amplifier U4, an optocoupler G1, a diode D2, a resistor R20, a triode Q6, a triode Q7, a resistor R21, a resistor R22, a normally-closed relay, a standby lithium battery, a triode Q3 and a MOS transistor Q2;
the resistance values of the resistor R7 and the resistor R9 are equal, and the resistance value of the resistor R12 is smaller than one half of the resistance value of the resistor R7;
one end of the resistor R2 is connected with the negative electrode of the diode D3, the other end of the resistor R2 is grounded through a resistor R4, a common connection point between the resistor R2 and the resistor R4 is connected with the inverting terminal of the operational amplifier U4 through a resistor R7, one end of the resistor R18 is connected with the inverting terminal of the operational amplifier U4, the other end of the resistor R18 is connected with the spare lithium battery Vbat, the negative electrode of the controllable precise voltage-stabilizing source U3 is connected with the inverting terminal of the operational amplifier U4, the positive electrode of the controllable precise voltage-stabilizing source U3 is grounded, the reference electrode of the controllable precise voltage-stabilizing source U3 is connected with the spare lithium battery Vbat through a resistor R19, the output end of the operational amplifier U4 is connected with the positive electrode of the light-emitting diode of the optical coupler G1 through a resistor R14, the negative electrode of the light-emitting diode of the optical coupler G1 is grounded, the collector of the optical coupler G1 is connected with a 5V power supply, the emitter of the phototransistor 1 is grounded, the emitter of the optical coupler 1 is connected, the emitter of the transistor Q3 is grounded through a resistor R12;
one end of a resistor R6 is connected to the collector of a triode Q1, the other end of a resistor R6 is connected with the drain of a MOS transistor Q2, the source of the MOS transistor Q2 is connected to the common connection point between a capacitor C2 and the emitter of the triode Q1 through a resistor R9, one end of the resistor R7 is connected to the gate of a MOS transistor Q2, the other end of the resistor R7 is connected to the common connection point between a capacitor C2 and the emitter of the triode Q1, the gate of the MOS transistor Q2 is grounded through a resistor R8, the gate of the MOS transistor Q2 is grounded through a capacitor C3, the common connection point A between the gate of the MOS transistor and the resistor R8 is connected with the collector of the triode Q3, wherein the MOS transistor Q2 is a PMOS transistor;
the anode of the diode D2 is connected to the emitter of the phototriode of the optocoupler G1, the cathode of the diode D2 is connected to the base of the triode Q6 through the resistor R20, the emitter of the triode Q6 is grounded, and the collector of the triode Q6 is connected to the detection terminal CON3 of the master controller;
the base electrode of the triode Q7 is connected to a common connection point between the resistor R2 and the resistor R4 through the resistor R22, the collector electrode of the triode Q7 is connected with 5V direct current, the emitter electrode of the triode Q7 is connected with the coil J1 of the normally closed relay in series through the resistor R21 and then grounded, one end of the normally closed switch J-K1 of the normally closed relay is connected with the standby lithium battery Vbat, and the other end of the normally closed switch J-K1 of the normally closed relay is connected with the input end of.
Furthermore, the main controller and the environment processing circuit are single-chip microcomputers.
Further, the rectifying circuit is a full-bridge rectifying circuit composed of diodes.
The invention has the beneficial effects that: according to the invention, on one hand, stable direct current can be provided for the LED array in the LED street lamp, so that the LED street lamp can continuously and stably operate, on the other hand, the current environmental condition can be detected in real time, the illumination brightness and the color temperature can be adaptively adjusted according to the detected environmental parameters, different traffic conditions can be adapted, and the energy consumption can be effectively saved.
Drawings
The invention is further described below 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 a front stage power supply circuit according to the present invention.
FIG. 3 is a schematic diagram of an LED control circuit of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings of the specification:
the invention provides an intelligent control system of a tricolor multi-color temperature LED street lamp based on environment detection, which comprises an environment detection unit and an LED drive control unit, wherein the environment detection unit is used for detecting the environment of the LED street lamp;
the LED driving control unit comprises a surge protection circuit, a rectifying circuit, a preceding stage power supply circuit, a main controller, a three-primary-color LED lamp, an LED control circuit, a first voltage stabilizing circuit and a second voltage stabilizing circuit;
the input end of the surge protection circuit is connected with a mains supply, the output end of the surge protection circuit is connected with the input end of the rectification circuit, the output end of the rectification circuit is connected with the input end of the preceding power supply circuit, the output end of the preceding power supply circuit is respectively connected with the input ends of the first voltage stabilizing circuit and the second voltage stabilizing circuit, the first voltage stabilizing circuit outputs 5V direct current to supply power to the master controller, the LED control circuit and the preceding power supply circuit, the output end of the second voltage stabilizing circuit outputs 9V direct current VCC1 to supply power to the LED control circuit, the control end of the LED control circuit is connected with a master control electrical appliance, and the control end of the preceding power supply circuit is connected with the;
the environment detection unit comprises a traffic flow sensor, an air particulate matter sensor, a temperature and humidity sensor, a brightness sensor, a rainwater sensor and an environment processing circuit;
the output ends of the traffic flow sensor, the air particulate matter sensor, the brightness sensor, the temperature and humidity sensor and the rainwater sensor are connected with an environment processing circuit, the environment processing circuit is in communication connection with the main controller, the traffic flow sensor, the air particulate matter sensor, the brightness sensor, the temperature and humidity sensor and the rainwater sensor are powered by a first voltage stabilizing circuit, and the environment processing circuit is powered by the first voltage stabilizing circuit; through the structure, the environment detection unit detects the environment and the traffic volume of the street lamp and judges the current environment condition, such as: the air particulate matter sensor (such as sensors of PM2.5, PM1O and the like) detects the concentration of particulate matter, whether fog is generated at the current road section is judged through the temperature and humidity sensor, the environment processing circuit judges that the concentration of the particulate matter reaches a set value and the output value of the temperature and humidity sensor judges that fog is generated at the current time, the environment processing circuit transmits a processing result to the main controller, the main controller controls the LED street lamp to work in a yellow light state, and the traffic safety is ensured by utilizing the characteristics of good diffraction, high scattering intensity and strong penetrating power of the yellow light, on the other hand, the traffic flow sensor judges the magnitude of the current traffic flow, the main controller controls the magnitude of working current of each LED array in the LED street lamp according to the magnitude of the traffic flow, so as to carry out brightness adjustment, the brightness sensor is used for detecting the brightness state of the current environment, and comprehensively, therefore, through the structure, on the one hand, can provide stable direct current for the LED array in the LED street lamp, ensure that the LED street lamp can continuously and stably operate, on the other hand, can carry out real-time detection to the environmental aspect that is located at present, and can adjust illumination luminance and colour temperature according to the environmental parameter self-adaptation that detects, can adapt to different traffic conditions, and can effectively practice thrift the energy consumption, wherein, master controller and environmental processing circuit all adopt current singlechip, for example AVR singlechip, 89S51 singlechip etc., and rectifier circuit adopts the full bridge type rectifier circuit that current diode constitutes, and stability is good, simple structure, surge protection circuit adopt current protection circuit can, can directly purchase.
In this embodiment, the three-primary-color LED lamp includes a red LED array, a yellow LED array, and a white LED array, the three LED control circuits have three and the same structure, and the three LED control circuits respectively control the red LED array, the yellow LED array, and the white LED array to emit light and to have brightness; the three basic colors in the invention refer to three basic colors of red, yellow and white, but not three primary colors of red, green and white in the traditional sense, and the three basic colors can ensure that the light ray reduction degree of the street lamp is higher, thereby being beneficial to illumination;
the LED control circuit comprises a resistor R15, a resistor R16, a digital potentiometer RT2, a triode Q4, a triode Q5, a diode D1, a silicon controlled rectifier SCR1, a resistor R13, a resistor R24, a resistor R25, a resistor R26, an operational amplifier U5, an operational amplifier U6, an operational amplifier U7 and a capacitor C4;
one end of the resistor R15 is connected with a 5V direct current power supply, the other end of the resistor R15 is connected with the collector of the triode Q4, the emitter of the triode Q4 is connected with the control electrode of the silicon controlled SCR1, the base electrode of the triode Q4 is connected with the resistor R16, the other end of the resistor R16 is connected with the main controller as the first control end CON1 of the LED control circuit, the anode of the SCR1 is connected with the output end of a digital potentiometer RT2, the input end of the digital potentiometer RT2 is connected with the output end of an operational amplifier U5, the control end of the digital potentiometer RT2 is connected with a master controller, the negative electrode of the controlled silicon SCR1 is connected with the input end of the LED array of the tricolor LED and the like, the positive electrode of the controlled silicon SCR1 is also connected with the collector of a triode Q5, the emitter of the triode Q5 is grounded, the base of the triode Q5 is connected with the negative electrode of a diode D1 through a resistor R13, and the positive electrode of a diode D1 is connected with a master controller as a second control end CON2 of the LED control circuit;
the in-phase end of the operational amplifier U5 is connected to a power supply VCC1 through a resistor R24, the in-phase end of the operational amplifier U7 is connected to a common connection point between a digital potentiometer RT2 and a silicon controlled rectifier SCR1, the output end of the operational amplifier U7 is connected to the inverting end of the operational amplifier U6 through a resistor R25, the inverting end of the operational amplifier U7 is directly connected to the output end of the operational amplifier U7, the inverting end of the operational amplifier U6 is connected in parallel to the output end of the operational amplifier U6 through a resistor R26 and a capacitor C4, the output end of the operational amplifier U6 is connected to the inverting end of the operational amplifier U5, and the in-phase end of the operational amplifier U6 is connected to the output end of the operational amplifier U5; wherein, the constant current source circuit is constituteed to fortune amplifier U5, digital potentiometer RT2, fortune amplifier U6 and fortune amplifier U7, through the size of control RT2 to change the size of the supply current of output to the LED array, thereby change illumination brightness, fortune is put U7 and fortune and is put U6 and be used for carrying out feedback control, thereby make the output current of whole constant current source more reliable and more stable.
Through the structure, when the LED street lamp is required to emit white light, three LED control circuits work, the master controller controls the conduction of the triode Q4, the triode Q5 is cut off, the controlled silicon is conducted at the moment, three LED arrays work in a light emitting mode, the whole LED street lamp outputs the white light, if light with other color temperatures is required, the color temperature is changed by controlling the work of different LED arrays, the resistance value is changed by controlling the RT2 through the master controller, the driving current of the LED arrays is changed, the brightness of the LED street lamp is changed, the master controller can also calculate the current value flowing to the LED arrays according to the value of the RT2 and the internal impedance of the controlled silicon SCR1, if the brightness value input by a user is too high, the current flowing to the LED arrays is larger, the aging of the LEDs is accelerated, at the moment, the master controller can be conducted through controlling the triode Q5, a power supply loop is turned off, and then a user can be inquired through a The LED protection circuit has the advantages that the brightness value input in the front works, so that the LED array is well protected, and the silicon controlled rectifier is used as a switch, so that the LED protection circuit has the characteristics of high reflection sensitivity, high stability and no inrush current in the switching-on and switching-off process, and further can further protect the LED array.
Further, the preceding stage power supply circuit comprises a resistor R1, an operational amplifier U1, a resistor R3, a triode Q1, a resistor R5, a controllable precision voltage-stabilizing source U2, a resistor R10, a capacitor C1, a digital potentiometer RT1, a diode D3, a capacitor C2 and a voltage-stabilizing tube DW 1;
one end of the resistor R1 is used as an input end of a preceding stage power supply circuit and is connected with an output end of the rectifying circuit, the other end of the resistor R1 is connected with a non-inverting end of the operational amplifier U1, an inverting end of the operational amplifier U1 is directly connected with an output end of the operational amplifier U1 to form a voltage follower, an output end of the operational amplifier U1 is connected with a collector of a triode Q1 through a resistor R3, an emitter of the triode Q1 is connected with an anode of a diode D3, a cathode of the diode D3 is grounded through a capacitor C2, a cathode of the diode D3 is connected with a cathode of a voltage regulator DW1, an anode of the voltage regulator DW1 is grounded, a common connection point between the triode Q1 and a voltage regulator DW 9 is used as an output end of the preceding stage power supply circuit, a collector of the triode Q1 is connected with a base of a triode Q1 through a resistor R5, a base of the triode Q1 is connected with a cathode of a controllable precision voltage regulator U2, an anode of the controllable precision voltage regulator U2, the output end of the digital potentiometer RT1 is grounded through a resistor R10, a common connection point between the digital potentiometer RT1 and the resistor R10 is connected with the reference pole of a controllable precision voltage-stabilizing source U2, and the emitter of the triode Q1 is connected with the reference pole of the controllable precision voltage-stabilizing source U2 through a capacitor C1.
Specifically, the preceding-stage power supply circuit further comprises a standby circuit, wherein the standby circuit comprises a resistor R2, a resistor R4, a resistor R6, a resistor R8, a resistor R7, a resistor R9, a resistor R11, a resistor R14, a resistor R17, a resistor R18, a resistor R19, a controllable precision voltage-stabilizing source U3, an operational amplifier U4, an optocoupler G1, a diode D2, a resistor R20, a triode Q6, a triode Q7, a resistor R21, a resistor R22, a normally-closed relay, a standby lithium battery, a triode Q3 and a MOS transistor Q2;
the resistance values of the resistor R7 and the resistor R9 are equal, and the resistance value of the resistor R12 is smaller than one half of the resistance value of the resistor R7;
one end of the resistor R2 is connected with the negative electrode of the diode D3, the other end of the resistor R2 is grounded through a resistor R4, a common connection point between the resistor R2 and the resistor R4 is connected with the inverting terminal of the operational amplifier U4 through a resistor R7, one end of the resistor R18 is connected with the inverting terminal of the operational amplifier U4, the other end of the resistor R18 is connected with the spare lithium battery Vbat, the negative electrode of the controllable precise voltage-stabilizing source U3 is connected with the inverting terminal of the operational amplifier U4, the positive electrode of the controllable precise voltage-stabilizing source U3 is grounded, the reference electrode of the controllable precise voltage-stabilizing source U3 is connected with the spare lithium battery Vbat through a resistor R19, the output end of the operational amplifier U4 is connected with the positive electrode of the light-emitting diode of the optical coupler G1 through a resistor R14, the negative electrode of the light-emitting diode of the optical coupler G1 is grounded, the collector of the optical coupler G1 is connected with a 5V power supply, the emitter of the phototransistor 1 is grounded, the emitter of the optical coupler 1 is connected, the emitter of the transistor Q3 is grounded through a resistor R12;
one end of a resistor R6 is connected to the collector of a triode Q1, the other end of a resistor R6 is connected with the drain of a MOS transistor Q2, the source of the MOS transistor Q2 is connected to the common connection point between a capacitor C2 and the emitter of the triode Q1 through a resistor R9, one end of the resistor R7 is connected to the gate of a MOS transistor Q2, the other end of the resistor R7 is connected to the common connection point between a capacitor C2 and the emitter of the triode Q1, the gate of the MOS transistor Q2 is grounded through a resistor R8, the gate of the MOS transistor Q2 is grounded through a capacitor C3, the common connection point A between the gate of the MOS transistor and the resistor R8 is connected with the collector of the triode Q3, wherein the MOS transistor Q2 is a PMOS transistor;
the anode of the diode D2 is connected to the emitter of the phototriode of the optocoupler G1, the cathode of the diode D2 is connected to the base of the triode Q6 through the resistor R20, the emitter of the triode Q6 is grounded, and the collector of the triode Q6 is connected to the detection terminal CON3 of the master controller;
the base electrode of the triode Q7 is connected to a common connection point between the resistor R2 and the resistor R4 through the resistor R22, the collector electrode of the triode Q7 is connected with 5V direct current, the emitter electrode of the triode Q7 is connected with a coil J1 of the normally closed relay in series through the resistor R21 and then grounded, one end of a normally closed switch J-K1 of the normally closed relay is connected with a standby lithium battery Vbat, and the other end of the normally closed switch J-K1 of the normally closed relay is connected with the input end of; with the power supply with the structure, due to the effect of the voltage follower formed by the operational amplifier U1, on one hand, the voltage follower has the effect of stabilizing voltage, on the other hand, the voltage follower can play the effect of isolating a back-end circuit, and the back-end circuit is well protected, and because the triode Q1 plays the role of pre-stage voltage stabilization and is matched with the first voltage stabilizing circuit and the second voltage stabilizing circuit, stable working power can be provided for the whole system, on the other hand, when the triode Q1 stably runs, the resistance of the resistor R9 and the resistor R7 is equal, so that the MOS tube Q2 is cut off, the resistor R2 and the resistor R6 are used for sampling the output of the triode Q1, the reverse comparator formed by the operational amplifier U4 is used for comparing the sampling value with the reference voltage provided by the controllable precise voltage stabilizing source U3, when the sampling value is smaller than the reference voltage value, the operational amplifier U4 outputs high level, and the optical coupler G, the triode Q3 is conducted, so that the triode Q3 is conducted, so that the grid voltage of the MOS tube Q2 is pulled down, so that the MOS tube Q2 is conducted, so that the standby loop consisting of the resistor R6, the drain electrode of the MOS tube Q2, the source electrode and the resistor R9 is used for directly supplying power, in addition, when the optical coupler G1 is conducted, the triode Q6 is conducted, so that the potential of the terminal CON3 of the master controller is pulled down, the master controller learns that the voltage stabilizing circuit consisting of the triode Q1 breaks down according to the low level and gives an alarm, when the voltage stabilizing circuit of the triode Q1 has continuous output, the triode Q7 is conducted, the normally closed relay enables the normally closed switch J-K1 to be disconnected due to power supply, if the triode Q1 breaks down, the triode Q7 is cut off, the normally closed switch J-K1 of the voltage stabilizing circuit is closed, the standby lithium battery is used for supplying power to the first Vbat, and the, no operational power is supplied to the LED array; and the current of the standby lithium battery is prevented from flowing backwards to the resistor R2 to cause misjudgment, and the diode D4 is arranged at the rear end of the common connection point of the voltage-stabilizing tube DW1 and the diode D1.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (4)
1. The utility model provides a three primary colors polychrome temperature LED street lamp intelligence control system based on environmental detection which characterized in that: the LED driving control system comprises an environment detection unit and an LED driving control unit;
the LED driving control unit comprises a surge protection circuit, a rectifying circuit, a preceding stage power supply circuit, a main controller, a three-primary-color LED lamp, an LED control circuit, a first voltage stabilizing circuit and a second voltage stabilizing circuit;
the input end of the surge protection circuit is connected with a mains supply, the output end of the surge protection circuit is connected with the input end of the rectification circuit, the output end of the rectification circuit is connected with the input end of the preceding power supply circuit, the output end of the preceding power supply circuit is respectively connected with the input ends of the first voltage stabilizing circuit and the second voltage stabilizing circuit, the first voltage stabilizing circuit outputs 5V direct current to supply power to the main controller, the LED control circuit and the preceding power supply circuit, the output end of the second voltage stabilizing circuit outputs 9V direct current VCC1 to supply power to the LED control circuit, the control end of the LED control circuit is electrically connected with the main controller, and the control end of the preceding power supply circuit is connected with the;
the environment detection unit comprises a traffic flow sensor, an air particulate matter sensor, a temperature and humidity sensor, a brightness sensor, a rainwater sensor and an environment processing circuit;
the output ends of the traffic flow sensor, the air particulate matter sensor, the brightness sensor, the temperature and humidity sensor and the rainwater sensor are connected with an environment processing circuit, the environment processing circuit is in communication connection with the main controller, the traffic flow sensor, the air particulate matter sensor, the brightness sensor, the temperature and humidity sensor and the rainwater sensor are powered by a first voltage stabilizing circuit, and the environment processing circuit is powered by the first voltage stabilizing circuit;
the pre-stage power supply circuit comprises a resistor R1, an operational amplifier U1, a resistor R3, a triode Q1, a resistor R5, a controllable precision voltage-stabilizing source U2, a resistor R10, a capacitor C1, a digital potentiometer RT1, a diode D3, a capacitor C2 and a voltage-stabilizing tube DW 1;
one end of the resistor R1 is used as an input end of a preceding stage power supply circuit and is connected with an output end of the rectifying circuit, the other end of the resistor R1 is connected with a non-inverting end of the operational amplifier U1, an inverting end of the operational amplifier U1 is directly connected with an output end of the operational amplifier U1 to form a voltage follower, an output end of the operational amplifier U1 is connected with a collector of a triode Q1 through a resistor R3, an emitter of the triode Q1 is connected with an anode of a diode D3, a cathode of the diode D3 is grounded through a capacitor C2, a cathode of the diode D3 is connected with a cathode of a voltage regulator DW1, an anode of the voltage regulator DW1 is grounded, a common connection point between the triode Q1 and a voltage regulator DW 9 is used as an output end of the preceding stage power supply circuit, a collector of the triode Q1 is connected with a base of a triode Q1 through a resistor R5, a base of the triode Q1 is connected with a cathode of a controllable precision voltage regulator U2, an anode of the controllable precision voltage regulator U2, the output end of the digital potentiometer RT1 is grounded through a resistor R10, a common connection point between the digital potentiometer RT1 and the resistor R10 is connected with a reference electrode of a controllable precision voltage-stabilizing source U2, and an emitter of a triode Q1 is connected with the reference electrode of the controllable precision voltage-stabilizing source U2 through a capacitor C1;
the pre-stage power supply circuit further comprises a standby circuit, wherein the standby circuit comprises a resistor R2, a resistor R4, a resistor R6, a resistor R8, a resistor R7, a resistor R9, a resistor R11, a resistor R14, a resistor R17, a resistor R18, a resistor R19, a controllable precision voltage-stabilizing source U3, an operational amplifier U4, an optocoupler G1, a diode D2, a resistor R20, a triode Q6, a triode Q7, a resistor R21, a resistor R22, a normally closed relay, a standby lithium battery, a triode Q3 and a MOS transistor Q2;
the resistance values of the resistor R7 and the resistor R9 are equal, and the resistance value of the resistor R12 is smaller than one half of the resistance value of the resistor R7;
one end of the resistor R2 is connected with the negative electrode of the diode D3, the other end of the resistor R2 is grounded through a resistor R4, a common connection point between the resistor R2 and the resistor R4 is connected with the inverting terminal of the operational amplifier U4 through a resistor R7, one end of the resistor R18 is connected with the inverting terminal of the operational amplifier U4, the other end of the resistor R18 is connected with the spare lithium battery Vbat, the negative electrode of the controllable precise voltage-stabilizing source U3 is connected with the inverting terminal of the operational amplifier U4, the positive electrode of the controllable precise voltage-stabilizing source U3 is grounded, the reference electrode of the controllable precise voltage-stabilizing source U3 is connected with the spare lithium battery Vbat through a resistor R19, the output end of the operational amplifier U4 is connected with the positive electrode of the light-emitting diode of the optical coupler G1 through a resistor R14, the negative electrode of the light-emitting diode of the optical coupler G1 is grounded, the collector of the optical coupler G1 is connected with a 5V power supply, the emitter of the phototransistor 1 is grounded, the emitter of the optical coupler 1 is connected, the emitter of the transistor Q3 is grounded through a resistor R12;
one end of a resistor R6 is connected to the collector of a triode Q1, the other end of a resistor R6 is connected with the drain of a MOS transistor Q2, the source of the MOS transistor Q2 is connected to the common connection point between a capacitor C2 and the emitter of the triode Q1 through a resistor R9, one end of the resistor R7 is connected to the gate of a MOS transistor Q2, the other end of the resistor R7 is connected to the common connection point between a capacitor C2 and the emitter of the triode Q1, the gate of the MOS transistor Q2 is grounded through a resistor R8, the gate of the MOS transistor Q2 is grounded through a capacitor C3, the common connection point A between the gate of the MOS transistor and the resistor R8 is connected with the collector of the triode Q3, wherein the MOS transistor Q2 is a PMOS transistor;
the anode of the diode D2 is connected to the emitter of the phototriode of the optocoupler G1, the cathode of the diode D2 is connected to the base of the triode Q6 through the resistor R20, the emitter of the triode Q6 is grounded, and the collector of the triode Q6 is connected to the detection terminal CON3 of the master controller;
the base electrode of the triode Q7 is connected to a common connection point between the resistor R2 and the resistor R4 through the resistor R22, the collector electrode of the triode Q7 is connected with 5V direct current, the emitter electrode of the triode Q7 is connected with the coil J1 of the normally closed relay in series through the resistor R21 and then grounded, one end of the normally closed switch J-K1 of the normally closed relay is connected with the standby lithium battery Vbat, and the other end of the normally closed switch J-K1 of the normally closed relay is connected with the input end of.
2. The environment detection-based intelligent control system for the tricolor multi-color temperature LED street lamp according to claim 1, characterized in that: the three-primary-color LED lamp comprises a red LED array, a yellow LED array and a white LED array, the number of the LED control circuits is three, the circuit structures of the LED control circuits are the same, and the three LED control circuits respectively control the light emitting and the brightness of the red LED array, the yellow LED array and the white LED array;
the LED control circuit comprises a resistor R15, a resistor R16, a digital potentiometer RT2, a triode Q4, a triode Q5, a diode D1, a silicon controlled rectifier SCR1, a resistor R13, a resistor R24, a resistor R25, a resistor R26, an operational amplifier U5, an operational amplifier U6, an operational amplifier U7 and a capacitor C4;
one end of the resistor R15 is connected with a 5V direct current power supply, the other end of the resistor R15 is connected with the collector of the triode Q4, the emitter of the triode Q4 is connected with the control electrode of the silicon controlled SCR1, the base electrode of the triode Q4 is connected with the resistor R16, the other end of the resistor R16 is connected with the main controller as the first control end CON1 of the LED control circuit, the anode of the SCR1 is connected with the output end of a digital potentiometer RT2, the input end of the digital potentiometer RT2 is connected with the output end of an operational amplifier U5, the control end of the digital potentiometer RT2 is connected with a master controller, the negative electrode of the SCR1 is connected with the input end of the LED array of the tricolor LED lamp, the positive electrode of the controlled silicon SCR1 is also connected with the collector of a triode Q5, the emitter of the triode Q5 is grounded, the base of the triode Q5 is connected with the negative electrode of a diode D1 through a resistor R13, and the positive electrode of a diode D1 is connected with a master controller as a second control end CON2 of the LED control circuit;
the in-phase end of the operational amplifier U5 is connected to a power supply VCC1 through a resistor R24, the in-phase end of the operational amplifier U7 is connected to a common connection point between a digital potentiometer RT2 and a silicon controlled rectifier SCR1, the output end of the operational amplifier U7 is connected to the inverting end of the operational amplifier U6 through a resistor R25, the inverting end of the operational amplifier U7 is directly connected to the output end of the operational amplifier U7, the inverting end of the operational amplifier U6 is connected to the output end of the operational amplifier U6 through a resistor R26 and a capacitor C4 in parallel, the output end of the operational amplifier U6 is connected to the inverting end of the operational amplifier U5, and the in-phase end of the operational amplifier U6 is connected to the output end of the operational amplifier U5.
3. The environment detection-based intelligent control system for the tricolor multi-color temperature LED street lamp according to claim 1, characterized in that: the main controller and the environment processing circuit are single-chip microcomputers.
4. The environment detection-based intelligent control system for the tricolor multi-color temperature LED street lamp according to claim 1, characterized in that: the rectifying circuit is a full-bridge rectifying circuit consisting of diodes.
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| CN110278636B (en) * | 2019-07-09 | 2023-12-01 | 泉州师范学院 | Street lamp system capable of penetrating fog and haze based on super-capacitor solar double-loop |
| CN110708800A (en) * | 2019-10-21 | 2020-01-17 | 福建大晶光电有限公司 | Intelligent control system of LED street lamp |
| CN111417234B (en) * | 2019-12-31 | 2022-01-25 | 重庆绿色科技开发（集团）有限公司 | Multi-color temperature full-spectrum LED solar lamp illumination control system |
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