CN219697938U - Automatic brightness-adjustable energy-saving street lamp - Google Patents
Automatic brightness-adjustable energy-saving street lamp Download PDFInfo
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- CN219697938U CN219697938U CN202321025627.3U CN202321025627U CN219697938U CN 219697938 U CN219697938 U CN 219697938U CN 202321025627 U CN202321025627 U CN 202321025627U CN 219697938 U CN219697938 U CN 219697938U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model provides an automatic brightness-adjustable energy-saving street lamp, which comprises a control chip, a switching power supply circuit, a voltage-to-current circuit, a rectification input circuit, a normally-open relay, a detection control circuit and a voltage stabilizing chip, wherein the control chip is connected with the switching power supply circuit; the detection control circuit is used for detecting the brightness of the environment where the street lamp is positioned and outputting a brightness detection signal to the control chip, the control output end of the detection control circuit is grounded through the exciting coil of the relay, the input end of the rectification input circuit is connected with the mains supply, the output end of the rectification input circuit is connected with the input end of the switching power supply circuit, the output end of the switching power supply circuit is connected with the input end of the voltage-to-current circuit, and the output end of the voltage-to-current circuit is connected with the street lamp; the control output end of the control chip is connected with the control input end of the switching power supply circuit, the switch K1 of the relay is connected between the positive input end of the rectification input circuit and the live wire of the mains supply, the voltage stabilizing chip is connected with the power output end of the detection control circuit, and the output end of the voltage stabilizing chip supplies power to the control chip.
Description
Technical Field
The utility model relates to a street lamp, in particular to an automatic brightness-adjustable energy-saving street lamp.
Background
The street lamp is widely applied to modern production life, among the prior art, to the control of street lamp generally adopt manual control's mode, through the manual judgment when the street lamp is opened and when the street lamp is closed, this kind of mode has following defect:
because the artificial phenomenon of negligence exists, often when the luminance of environment has very dark, the manual work forgets to turn on the street lamp to influence pedestrian or vehicle and travel, there is the potential safety hazard, and when the luminance of outside environment has been very big, often the street lamp still is in the open state this time, just so causes the electric energy waste. In the prior art, although the control system for automatically opening or closing the street lamp is provided, in the prior art, the automatic opening or closing of the street lamp is often controlled by a timing mode, namely setting the opening and closing time of the street lamp and a timer or a time service circuit, and the mode solves the problems to a certain extent, but the brightness is not adjustable, when the external environment brightness is smaller due to rainy days or other factors, the street lamp does not reach the opening time of the street lamp at the moment, so that the street lamp cannot work, but pedestrians or vehicles are influenced, and potential safety hazards exist.
Therefore, in order to solve the above-mentioned technical problems, a new technical means is needed.
Disclosure of Invention
Therefore, the utility model aims to provide the automatic brightness-adjustable energy-saving street lamp, which can automatically adjust the illumination brightness of the street lamp according to the brightness of the environment, and can automatically turn off the street lamp when the environment brightness can completely reach the safe passing condition, thereby self-adapting to the environment brightness state, effectively avoiding the problems in the prior art and achieving good energy-saving effect.
The utility model provides an automatic brightness-adjustable energy-saving street lamp, which comprises a control chip, a switching power supply circuit, a voltage-to-current circuit, a rectification input circuit, a normally-open relay, a detection control circuit and a voltage stabilizing chip, wherein the control chip is connected with the switching power supply circuit;
the detection control circuit is used for detecting the brightness of the environment where the street lamp is positioned and outputting a brightness detection signal to the control chip, the control output end of the detection control circuit is grounded through the exciting coil of the relay, the input end of the rectification input circuit is connected with the mains supply, the output end of the rectification input circuit is connected with the input end of the switching power supply circuit, the output end of the switching power supply circuit is connected with the input end of the voltage-to-current circuit, and the output end of the voltage-to-current circuit is connected with the street lamp; the control output end of the control chip is connected with the control input end of the switching power supply circuit, the switch K1 of the relay is connected between the positive input end of the rectification input circuit and the live wire of the mains supply, the voltage stabilizing chip is connected with the power output end of the detection control circuit, and the output end of the voltage stabilizing chip supplies power to the control chip.
Further, the detection control circuit includes a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a photo resistor PR, a comparator U5, a capacitor C8, a capacitor C9, a transistor Q2, a P-type transistor Q3 optocoupler OC1, and a diode D5;
one end of a resistor R13 is connected to the output end of the rectification input circuit, the other end of the resistor R13 is connected to the base electrode of a triode Q3, the emitter electrode of the triode Q3 is connected to a storage battery BAT through a resistor R15, the collector electrode of the triode Q3 is connected to the positive electrode of a light emitting diode of an optical coupler OC1 through a resistor R14, the negative electrode of the light emitting diode of the optical coupler OC1 is grounded, the collector electrode of a phototriode of the optical coupler OC1 is connected to the storage battery BAT, the emitter electrode of the phototriode of the optical coupler OC1 is connected to the collector electrode of a triode Q2 through a resistor R14, the collector electrode of the triode Q2 is connected to the output end of the rectification input circuit through a resistor R16, the collector electrode of the triode Q2 is used as a power output end VDD of the detection control circuit, the emitter electrode of the triode Q2 is connected to one end of a resistor R18, and the other end of the resistor R18 is used as a control output end of the detection control circuit;
the base electrode of the triode Q2 is connected with the cathode of the diode D5 through a resistor R17, and the anode of the diode D5 is connected with the output end of the comparator U5; one end of a resistor R19 is connected to a power output end VDD, the other end of the resistor R19 is connected in parallel with a capacitor C8 through a resistor R20 and then grounded, a common connection point of the resistor R19 and the capacitor C8 is connected to an inverting end of a comparator U5, one end of a resistor R22 is connected to the power output end VDD, the other end of the resistor R22 is connected in parallel with a capacitor C9 through a photoresistor PR and then grounded, a common connection point of the resistor R22 and the photoresistor PR is connected to an in-phase end of the comparator U5 through a resistor R21, and the common connection point of the resistor R22 and the photoresistor PR is used as a detection output end of a detection control circuit to output a brightness detection signal to a control chip.
Further, the rectification input circuit comprises a rectification circuit, a resistor R12, a capacitor C7 and an operational amplifier U4;
the positive input end of the rectifying circuit is connected to the live wire of the mains supply through a normally open switch K1 of the relay, the negative input end of the rectifying circuit is connected to the zero line of the mains supply, the negative output end of the rectifying circuit is grounded, the positive output end of the rectifying circuit is connected to the in-phase end of the operational amplifier U4 through a resistor R12, the in-phase end of the operational amplifier U4 is grounded through a capacitor C7, the inverting end of the operational amplifier U4 is directly connected with the output end of the operational amplifier U4 to form a voltage follower, and the output end of the operational amplifier U4 serves as the output end of the rectifying input circuit.
Further, the voltage-to-current circuit includes a resistor R9, a resistor R10, a resistor R11, a capacitor C6, an operational amplifier U1, an operational amplifier U2, an operational amplifier U3, and a digital potentiometer RT1;
one end of the resistor R9 is used as an input end of the voltage-to-current circuit, the other end of the resistor R9 is connected to the in-phase end of the operational amplifier U1, the output end of the operational amplifier U1 is connected to the in-phase end of the operational amplifier U3 through the digital potentiometer RT1, a common connection point between the digital potentiometer RT1 and the in-phase end of the operational amplifier U3 is used as an output end of the voltage-to-current circuit and is connected to the input end of the street lamp, the opposite phase end of the operational amplifier U3 is directly connected with the output end of the U3, the output end of the operational amplifier U3 is connected to the opposite phase end of the operational amplifier U2 through the resistor R10, the in-phase end of the operational amplifier U2 is connected to the output end of the operational amplifier U1 through the resistor R11 and the capacitor C6 in parallel, the output end of the operational amplifier U2 is connected to the opposite phase end of the operational amplifier U1, and the control end of the digital potentiometer is connected to the control chip.
The utility model has the beneficial effects that: according to the utility model, the illumination brightness of the street lamp can be automatically adjusted according to the brightness of the environment, and the street lamp can be automatically turned off when the environment brightness can completely reach the safe passing condition, so that the street lamp is self-adaptive to the environment brightness state, the problems in the prior art are effectively avoided, and a good energy-saving effect can be achieved.
Drawings
The utility model is further described below with reference to the accompanying drawings and examples:
fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic diagram of a switching power supply circuit of the present utility model.
Fig. 3 is a schematic diagram of a detection control circuit according to the present utility model.
Fig. 4 is a schematic diagram of a voltage-to-current circuit according to the present utility model.
Fig. 5 is a schematic diagram of a rectifying input circuit according to the present utility model.
Detailed Description
The present utility model is further described in detail below:
the utility model provides an automatic brightness-adjustable energy-saving street lamp, which comprises a control chip, a switching power supply circuit, a voltage-to-current circuit, a rectification input circuit, a normally-open relay, a detection control circuit and a voltage stabilizing chip, wherein the control chip is connected with the switching power supply circuit;
the detection control circuit is used for detecting the brightness of the environment where the street lamp is positioned and outputting a brightness detection signal to the control chip, the control output end of the detection control circuit is grounded through the exciting coil of the relay, the input end of the rectification input circuit is connected with the mains supply, the output end of the rectification input circuit is connected with the input end of the switching power supply circuit, the output end of the switching power supply circuit is connected with the input end of the voltage-to-current circuit, and the output end of the voltage-to-current circuit is connected with the street lamp; the control output end of the control chip is connected with the control input end of the switching power supply circuit, the switch K1 of the relay is connected between the positive input end of the rectification input circuit and the live wire of the mains supply, the voltage stabilizing chip is connected with the power output end of the detection control circuit, and the output end of the voltage stabilizing chip supplies power to the control chip; through the structure, the illumination brightness of the street lamp can be automatically adjusted according to the brightness of the environment, and the street lamp can be automatically closed when the environment brightness can completely reach the safe passing condition, so that the self-adaptive environment brightness state can effectively avoid the problems in the prior art, and the street lamp can have a good energy-saving effect.
The control chip adopts the existing singlechip, such as STM32 series singlechip, the user selects according to actual need, switching power supply circuit adopts UC3843 control chip and peripheral circuit thereof, as depicted in fig. 2, only voltage regulating partial circuit is given in fig. 2, other external circuits of UC3843 are prior art, the details are omitted here, pin 1 of UC3843 is used for receiving the control chip of control chip, control chip outputs corresponding control signal to UC3843 control chip according to the luminance of external ambient light, UC3843 control chip adjusts MOS pipe Q1's duty cycle according to control signal, thereby reach the purpose of adjusting output voltage, and then adjust the luminance of street lamp (street lamp adopts LED array, as shown in fig. 4).
In this embodiment, the detection control circuit includes a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a photo resistor PR, a comparator U5, a capacitor C8, a capacitor C9, a triode Q2, a P-type triode Q3 optocoupler OC1, and a diode D5;
one end of a resistor R13 is connected to the output end of the rectification input circuit, the other end of the resistor R13 is connected to the base electrode of a triode Q3, the emitter electrode of the triode Q3 is connected to a storage battery BAT through a resistor R15, the collector electrode of the triode Q3 is connected to the positive electrode of a light emitting diode of an optical coupler OC1 through a resistor R14, the negative electrode of the light emitting diode of the optical coupler OC1 is grounded, the collector electrode of a phototriode of the optical coupler OC1 is connected to the storage battery BAT, the emitter electrode of the phototriode of the optical coupler OC1 is connected to the collector electrode of a triode Q2 through a resistor R14, the collector electrode of the triode Q2 is connected to the output end of the rectification input circuit through a resistor R16, the collector electrode of the triode Q2 is used as a power output end VDD of the detection control circuit, the emitter electrode of the triode Q2 is connected to one end of a resistor R18, and the other end of the resistor R18 is used as a control output end of the detection control circuit;
the base electrode of the triode Q2 is connected with the cathode of the diode D5 through a resistor R17, and the anode of the diode D5 is connected with the output end of the comparator U5; one end of a resistor R19 is connected to a power output end VDD, the other end of the resistor R19 is connected in parallel with a capacitor C8 through a resistor R20 and then grounded, a common connection point of the resistor R19 and the capacitor C8 is connected to an inverting end of a comparator U5, one end of a resistor R22 is connected to the power output end VDD, the other end of the resistor R22 is connected in parallel with a capacitor C9 through a photoresistor PR and then grounded, a common connection point of the resistor R22 and the photoresistor PR is connected to an in-phase end of the comparator U5 through a resistor R21, and the common connection point of the resistor R22 and the photoresistor PR is used as a detection output end of a detection control circuit to output a brightness detection signal to a control chip; the storage battery adopts the existing lithium battery with a charge-discharge management circuit, the resistance value of a photoresistor PR is reduced along with the increase of brightness, a public connection point between R22 and PR outputs a brightness detection signal Vt to a control chip, when the in-phase terminal voltage of a comparator U5 is smaller than a reference voltage, the current environment brightness meets the passing requirement, the output of the battery is low level, Q2 is cut off, a relay J1 does not work, so that the street lamp is closed, when the voltage of the reverse-phase terminal voltage of the comparator U5 is larger than the in-phase terminal voltage, the current environment brightness does not meet the safe passing condition, at the moment, the comparator U5 outputs high level, the relay works, and the rectifying circuit works, so that the street lamp starts to illuminate; the triode Q3 is used as the condition of on-line power supply and storage battery power supply, wherein when the street lamp is not in operation, the storage battery supplies power to the control chip, the comparator U5 and the like, when the street lamp is required to be in operation, the circuit of the rectifying circuit supplies power, the storage battery is not in power supply, the switching principle is that when the rectifying circuit outputs, the base voltage of the triode Q3 is larger than or equal to the emitter voltage, the triode Q3 is cut off, the optocoupler is cut off, when the circuit of the rectifying circuit does not supply power, the base potential of the triode Q3 is 0, the triode Q3 is reversely biased, the optocoupler OC1 is turned on, and therefore the street lamp is supplied with power by the storage battery, although the storage battery supplies power, the triode Q2 is cut off, and the relay is always in an off state (because the ambient brightness meets the traffic requirement at the moment)
In this embodiment, the rectifying input circuit includes a rectifying circuit, a resistor R12, a capacitor C7, and an operational amplifier U4;
the positive input end of the rectifying circuit is connected with a live wire of the mains supply through a normally open switch K1 of the relay, the negative input end of the rectifying circuit is connected with a zero line of the mains supply, the negative output end of the rectifying circuit is grounded, the positive output end of the rectifying circuit is connected with an in-phase end of the operational amplifier U4 through a resistor R12, the in-phase end of the operational amplifier U4 is grounded through a capacitor C7, the inverting end of the operational amplifier U4 is directly connected with the output end of the operational amplifier U4 to form a voltage follower, the output end of the operational amplifier U4 serves as the output end of the rectifying input circuit, and the rectifying circuit adopts a full-bridge rectifying circuit Z1 formed by the existing diodes; r12 and C7 form an RC filter, the operational amplifier U4 forms a voltage follower, and the high input impedance characteristic of the voltage follower is utilized to carry out isolation protection on a subsequent circuit.
In this embodiment, the voltage-to-current circuit includes a resistor R9, a resistor R10, a resistor R11, a capacitor C6, an operational amplifier U1, an operational amplifier U2, an operational amplifier U3, and a digital potentiometer RT1;
one end of the resistor R9 is used as an input end of the voltage-to-current circuit, the other end of the resistor R9 is connected to the in-phase end of the operational amplifier U1, the output end of the operational amplifier U1 is connected to the in-phase end of the operational amplifier U3 through the digital potentiometer RT1, a common connection point between the in-phase ends of the digital potentiometer RT1 and the operational amplifier U3 is used as an output end of the voltage-to-current circuit and is connected to the input end of the street lamp, the opposite phase end of the operational amplifier U3 is directly connected with the output end of the U3, the output end of the operational amplifier U3 is connected to the opposite phase end of the operational amplifier U2 through the resistor R10, the opposite phase end of the operational amplifier U2 is connected to the output end of the operational amplifier U2 through the resistor R11 and the capacitor C6 in parallel, the output end of the operational amplifier U2 is connected to the opposite phase end of the operational amplifier U1, the control end of the digital potentiometer is connected to the control chip, the voltage signal can be converted into a stable current signal, the LED power supply, the control chip can also adjust the value of the digital potentiometer RT through the adjustment current, the control chip can adjust the value of the digital potentiometer RT, the value, the voltage level can be adjusted, and the street lamp brightness can be adjusted through the adjustment voltage level, and the street lamp can be adjusted, and the brightness level can be adjusted.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (4)
1. An automatic brightness-adjustable energy-saving street lamp, which is characterized in that: the device comprises a control chip, a switching power supply circuit, a voltage-to-current circuit, a rectification input circuit, a normally open relay, a detection control circuit and a voltage stabilizing chip;
the detection control circuit is used for detecting the brightness of the environment where the street lamp is positioned and outputting a brightness detection signal to the control chip, the control output end of the detection control circuit is grounded through the exciting coil of the relay, the input end of the rectification input circuit is connected with the mains supply, the output end of the rectification input circuit is connected with the input end of the switching power supply circuit, the output end of the switching power supply circuit is connected with the input end of the voltage-to-current circuit, and the output end of the voltage-to-current circuit is connected with the street lamp; the control output end of the control chip is connected with the control input end of the switching power supply circuit, the switch K1 of the relay is connected between the positive input end of the rectification input circuit and the live wire of the mains supply, the voltage stabilizing chip is connected with the power output end of the detection control circuit, and the output end of the voltage stabilizing chip supplies power to the control chip.
2. The automatically adjustable brightness energy-saving street lamp of claim 1, wherein: the detection control circuit comprises a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a photoresistor PR, a comparator U5, a capacitor C8, a capacitor C9, a triode Q2, a P-type triode Q3 optocoupler OC1 and a diode D5;
one end of a resistor R13 is connected to the output end of the rectification input circuit, the other end of the resistor R13 is connected to the base electrode of a triode Q3, the emitter electrode of the triode Q3 is connected to a storage battery BAT through a resistor R15, the collector electrode of the triode Q3 is connected to the positive electrode of a light emitting diode of an optical coupler OC1 through a resistor R14, the negative electrode of the light emitting diode of the optical coupler OC1 is grounded, the collector electrode of a phototriode of the optical coupler OC1 is connected to the storage battery BAT, the emitter electrode of the phototriode of the optical coupler OC1 is connected to the collector electrode of a triode Q2 through a resistor R14, the collector electrode of the triode Q2 is connected to the output end of the rectification input circuit through a resistor R16, the collector electrode of the triode Q2 is used as a power output end VDD of the detection control circuit, the emitter electrode of the triode Q2 is connected to one end of a resistor R18, and the other end of the resistor R18 is used as a control output end of the detection control circuit;
the base electrode of the triode Q2 is connected with the cathode of the diode D5 through a resistor R17, and the anode of the diode D5 is connected with the output end of the comparator U5; one end of a resistor R19 is connected to a power output end VDD, the other end of the resistor R19 is connected in parallel with a capacitor C8 through a resistor R20 and then grounded, a common connection point of the resistor R19 and the capacitor C8 is connected to an inverting end of a comparator U5, one end of a resistor R22 is connected to the power output end VDD, the other end of the resistor R22 is connected in parallel with a capacitor C9 through a photoresistor PR and then grounded, a common connection point of the resistor R22 and the photoresistor PR is connected to an in-phase end of the comparator U5 through a resistor R21, and the common connection point of the resistor R22 and the photoresistor PR is used as a detection output end of a detection control circuit to output a brightness detection signal to a control chip.
3. The automatically adjustable brightness energy-saving street lamp of claim 1, wherein: the rectification input circuit comprises a rectification circuit, a resistor R12, a capacitor C7 and an operational amplifier U4;
the positive input end of the rectifying circuit is connected to the live wire of the mains supply through a normally open switch K1 of the relay, the negative input end of the rectifying circuit is connected to the zero line of the mains supply, the negative output end of the rectifying circuit is grounded, the positive output end of the rectifying circuit is connected to the in-phase end of the operational amplifier U4 through a resistor R12, the in-phase end of the operational amplifier U4 is grounded through a capacitor C7, the inverting end of the operational amplifier U4 is directly connected with the output end of the operational amplifier U4 to form a voltage follower, and the output end of the operational amplifier U4 serves as the output end of the rectifying input circuit.
4. The automatically adjustable brightness energy-saving street lamp of claim 1, wherein: the voltage-to-current circuit comprises a resistor R9, a resistor R10, a resistor R11, a capacitor C6, an operational amplifier U1, an operational amplifier U2, an operational amplifier U3 and a digital potentiometer RT1;
one end of the resistor R9 is used as an input end of the voltage-to-current circuit, the other end of the resistor R9 is connected to the in-phase end of the operational amplifier U1, the output end of the operational amplifier U1 is connected to the in-phase end of the operational amplifier U3 through the digital potentiometer RT1, a common connection point between the digital potentiometer RT1 and the in-phase end of the operational amplifier U3 is used as an output end of the voltage-to-current circuit and is connected to the input end of the street lamp, the opposite-phase end of the operational amplifier U3 is directly connected with the output end of the U3, the output end of the operational amplifier U3 is connected to the opposite-phase end of the operational amplifier U2 through the resistor R10, the in-phase end of the operational amplifier U2 is connected to the output end of the operational amplifier U1 after being connected in parallel through the resistor R11 and the capacitor C6, and the output end of the operational amplifier U2 is connected to the opposite-phase end of the operational amplifier U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321025627.3U CN219697938U (en) | 2023-04-28 | 2023-04-28 | Automatic brightness-adjustable energy-saving street lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321025627.3U CN219697938U (en) | 2023-04-28 | 2023-04-28 | Automatic brightness-adjustable energy-saving street lamp |
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| CN219697938U true CN219697938U (en) | 2023-09-15 |
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| CN202321025627.3U Active CN219697938U (en) | 2023-04-28 | 2023-04-28 | Automatic brightness-adjustable energy-saving street lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119052971A (en) * | 2024-10-16 | 2024-11-29 | 重庆绿色科技开发（集团）有限公司 | Electrodeless dimming single-lamp inspection LED intelligent lamp and lighting management digital platform |
-
2023
- 2023-04-28 CN CN202321025627.3U patent/CN219697938U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119052971A (en) * | 2024-10-16 | 2024-11-29 | 重庆绿色科技开发（集团）有限公司 | Electrodeless dimming single-lamp inspection LED intelligent lamp and lighting management digital platform |
| CN119052971B (en) * | 2024-10-16 | 2025-05-06 | 重庆绿色科技开发（集团）有限公司 | Electrodeless dimming single-lamp inspection LED intelligent lamp and lighting management digital platform |
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