CN214960204U

CN214960204U - Solar street lamp control system capable of automatically adjusting brightness

Info

Publication number: CN214960204U
Application number: CN202120821657.XU
Authority: CN
Inventors: 罗小林; 张敬华; 张林通; 林瑜静; 史文珍; 陈冰
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-11-30
Anticipated expiration: 2031-04-21

Abstract

The utility model relates to a but solar street lamp control system of automatically regulated luminance. The utility model discloses a single chip module, photosensitive sensor module, millimeter wave radar sensor module, button module, display module, solar photovoltaic board, battery module, conversion circuit module and street lamp load module. The utility model discloses use the singlechip as the core, can the luminance of automatically regulated solar street lamp, the lamp is not bright in daytime, lights automatically in the time of night, and the street lamp has two kinds of luminance, and luminance depends on the number that the LED lamp was lighted. Under the condition that no vehicle or pedestrian is detected at night, the LED lamp lights a part, and the street lamp is in a slightly-lighted state to play an indicating role; under the condition that a vehicle or a pedestrian is detected, the LED lamps are all lightened, and the street lamp is in a full-lighting state, so that the cruising duration can be improved, and the service life of the street lamp can be prolonged.

Description

Solar street lamp control system capable of automatically adjusting brightness

Technical Field

The utility model relates to a but solar street lamp control system of automatically regulated luminance. Belongs to the technical field of photovoltaic electric energy.

Background

One solar street lamp is arranged beside the country road at intervals for night road illumination, but the solar street lamp also brings problems. The solar street lamps have strong cruising ability in sunny days, but the cruising ability is slightly insufficient in rainy days, the pedestrian flow and the traffic flow of rural roads at night are small, the street lamps are lighted for a long time even if no person or vehicle passes through the street lamps for a long time, the electric energy of the time is wasted, and meanwhile, the street lamps are in a high-power state for a long time, so that the service life of the solar street lamps is greatly influenced.

The millimeter wave radar sensor uses millimeter waves, has the characteristics of small volume, high resolution, strong anti-interference capability and all-weather working, and can greatly improve the reliability of the solar street lamp on the rural road if the millimeter wave radar technology can be applied to rural road illumination.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: a solar street lamp control system capable of automatically adjusting brightness controls a street lamp to be in low brightness when no vehicle or pedestrian exists at night, and controls the street lamp to be fully bright when vehicles or pedestrians exist.

The utility model adopts the technical scheme that: the utility model provides a but solar street lamp control system of automatically regulated luminance, includes singlechip module, photosensitive sensor module, millimeter wave radar sensor module, button module, display module, solar photovoltaic board, lithium cell module, conversion circuit module and street lamp load module. The single chip microcomputer module is respectively connected with the photosensitive sensor module, the millimeter wave radar sensor module, the key module and the display module; the conversion circuit module is respectively connected with the solar photovoltaic panel and the lithium battery module; the key module is used for adjusting the working time and the working mode of the street lamp; the display module is used for displaying the residual electric quantity of the lithium battery.

Furthermore, the conversion circuit module further comprises an overcharge protection circuit and an overdischarge protection circuit.

Furthermore, the street lamp load module controls different brightness through two I/O interfaces of the single chip microcomputer.

Further, the millimeter wave radar sensor is specifically HLK-LD116-24G in model.

Further, the single chip microcomputer module is AT89C 52.

Further, the photosensitive sensor module is specifically a photosensitive resistor GL5506 and a comparator LM393 chip.

The utility model has the advantages that:

1. the photoresistor module is sensitive to the ambient light intensity, and can accurately judge day and night.

2. The charging of the lithium battery is controlled through the CN3791 chip, and an internal circuit of the lithium battery can automatically track the maximum power point of the solar panel and utilize the output power of the solar panel to the maximum extent.

3. The millimeter wave radar sensor is used for detecting passing vehicles and pedestrians and controlling the electric quantity of the street lamp, and the endurance and the service life of the solar street lamp can be prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a solar street lamp control system capable of automatically adjusting brightness according to an embodiment of the present invention;

fig. 2 is a circuit connection diagram of a single chip module of a solar street lamp control system capable of automatically adjusting brightness provided by the embodiment of the present invention;

fig. 3 is a circuit connection diagram of a solar photovoltaic panel and a conversion circuit module of a solar street lamp control system capable of automatically adjusting brightness according to an embodiment of the present invention;

fig. 4 is a circuit connection diagram of a street lamp load module, a photosensitive sensor module and a millimeter wave radar sensor module of a solar street lamp control system capable of automatically adjusting brightness provided by the embodiment of the utility model;

fig. 5 is a circuit connection diagram of a display module and a key module of a solar street lamp control system capable of automatically adjusting brightness provided by the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

As shown in fig. 1, a solar street lamp control system capable of automatically adjusting brightness comprises a single chip microcomputer module, a photosensitive sensor module, a millimeter wave radar sensor module, a key module, a display module, a solar photovoltaic panel, a lithium battery module, a conversion circuit module and a street lamp load module. The single chip microcomputer module is respectively connected with the photosensitive sensor module, the millimeter wave radar sensor module, the key module and the display module; the conversion circuit module is respectively connected with the solar photovoltaic panel and the lithium battery module; the key module is used for adjusting the working time and the working mode of the street lamp; the display module is used for displaying the residual electric quantity of the lithium battery.

As shown in fig. 2, the single chip module in this embodiment includes a single chip microcomputer chip U3, an oscillation circuit composed of a crystal oscillator X1, capacitors C9 and C10, a reset circuit composed of a resistor R12, a capacitor C8, and a switch S1, and a download interface JD 1; as shown in fig. 3, the conversion circuit module includes a voltage regulator chip U1, an overcharge protection chip U2, a field effect transistor Q1, diodes D1-D4, a triode Q2, a transistor Q3, capacitors C1-C7, resistors R1-R8, LED lamps D5, D6, and an inductor L, wherein C3 is an electrolytic capacitor, and R1 is a variable resistor; as shown in fig. 4, the street lamp load module includes LED lamps D7-D10, resistors R10, R11, and triodes Q4 and Q5; as shown in fig. 5, the display module includes a pull-up resistor RP1, a display LCD1, a resistor R9; the key circuit comprises keys S2-S4.

As shown in fig. 2 to 5, the specific circuit connection diagram of the solar street lamp control system capable of automatically adjusting brightness in the present embodiment is as follows:

the positive electrode of the solar photovoltaic panel J1 is connected with the positive electrode of D4, and the negative electrode of J1 is connected with the negative electrode of U1: pin 2 and ground, the negative pole of D4 is connected to U1: 1, connecting pins; u1: the pin 3 is connected with the drains of R6, C5, R4, U2:9 pin, C2 and Q1; the other end of the C2 is connected with a U2:1 pin; the other end of R6 is connected with U2:6 pin and R8; the other end of C5 is connected to ground.

U2: the 3 pin and the 4 pin are respectively connected with the cathodes of D6 and D5, the anodes of D5 and D6 are connected with the other end of R4, the U2:2 pin is connected with R8 and C7 and is grounded, and the ratio of U2: a pin 5 is connected with R7, the other end of R7 is connected with C7, a pin U2:10 is connected with a grid of Q1, a source of Q1 is connected with the negative electrode of D2 and L, and the positive electrode of D2 is grounded; u2 with pin 8 attached to L and R1; the U2 pin 7 is connected with the other end of R1, the positive electrodes of C1 and D1, and the other end of C1 is grounded.

The positive electrode of a lithium battery BAT1 is connected with the negative electrode of D1 and the emitters of the negative electrodes Q2 of C3 and D3, the positive electrode of D3 is connected with C6 and R3, the base electrode of Q2 is connected with R2, and the collector electrode of Q2 is connected with C4 and a street lamp load; the negative electrode of lithium battery BAT1 is connected with the other end of C3 and grounded, and is connected with the emitters of C6, R5 and Q3 and C4, the other end of R5 is connected with the bases of R3 and Q3, and the collector of Q3 is connected with R2.

The pins U3:1 and 2 of the single chip microcomputer are respectively connected with the pins R10 and R11 on the street lamp load module, the pin U3:3 is connected with the pin U4:2 of the photosensitive sensor module, and the ratio of the pins U4: the pin 3 is grounded, and the pin 4 is connected with a power supply;

pins

10 and 11 of U3 are respectively connected with

pins

1 and 2 on a download interface JD1, and pin 3 of JD1 is grounded; pins U3, 12-14, are respectively connected with key switches S2-S4, and the other ends of S2-S4 are grounded; pins U3, 18 and 19 are respectively connected with capacitors C10 and C9 and crystal oscillation X1, and the other ends of C9 and C10 are connected with R12 and grounded; a U3 pin 9 is connected with a capacitor C8, a resistor R12 and a key switch S1, and the other ends of S1 and C8 are connected with a power supply; a pin U3:21 is connected with a resistor R13 and a pin U5:1 of the millimeter wave radar sensor, a pin U5:2 is grounded, and a pin U5:3 is connected with an R3 and a power supply; u3, pins 26-38, and a display LCD1: pins 6-4 are connected, pins 32-39 are respectively connected with pins 14-7 of LCD1,

pins

1 and 3 of LCD1 are connected with R9,

pins

1 and 16 are grounded, and

pins

2 and 15 are connected with a power supply.

On the street lamp load module, anodes of LED lamps D7 and D8 are connected with a power supply, a cathode of the LED lamps is connected with an emitter of Q4, a base of Q4 is connected with a resistor R10, and a collector of Q4 is grounded; the anodes of the LED lamps D9 and D10 are connected with a power supply, the cathode of the LED lamps is connected with the emitter of Q5, the base of Q5 is connected with a resistor R11, and the collector of Q5 is grounded.

Referring to fig. 2 and 4, the model of the photo resistor is GL5506, the model of the single chip microcomputer is AT89C52, the photo resistor converts the detected illumination information into an analog voltage signal, and the analog voltage signal is compared with the analog voltage in the comparator LM393, and the photo sensor module U4 outputs a corresponding high-low level signal to the P1.2 pin of the single chip microcomputer U3 to control the lighting states of the street lamps D7 and D8.

Referring to fig. 2 and 4, the millimeter wave radar sensor is HLK-LD116-24G, when no vehicle or pedestrian is present at night, the street lamp is in a slightly bright state, when the millimeter wave radar sensor U5 detects that a vehicle or a pedestrian passes around, a high level is output to the P2.0 pin of the single chip microcomputer U3, the street lamp is fully bright for several seconds, and when the vehicle or the pedestrian goes far, the street lamp returns to the slightly bright state.

Referring to fig. 3, the present embodiment adopts a CN3791 chip for charge control, and has trickle, constant current and constant voltage charging modes, wherein when the voltage across the battery is lower than a certain set value, the charging is automatically performed, and when the voltage across the battery reaches the set value, the charging is stopped. In addition, the voltage regulation chip U1 adopted by the embodiment is an LM78M05 chip, outputs stable 12V voltage and supplies power for a CN3791 chip.

Referring to fig. 3, in the embodiment, the lithium battery can be discharge protected, the diode D3 can be reversely conducted in the full-power state of BAT1, the base of the transistor Q3 has a bias voltage, so that the transistor Q3 is in saturation conduction, and meanwhile, the base of the transistor Q2 has a current flowing through, so that the saturation conduction supplies power to the street lamp load module; when the voltage of the battery is reduced and reaches the over-discharge protection voltage, the diode D3 is not enough to be conducted, the triode Q3 is cut off, the triode Q2 is also cut off, and the lithium battery BAT1 and the street lamp load module are disconnected.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A solar street lamp control system capable of automatically adjusting brightness is characterized by comprising a single chip microcomputer module, a photosensitive sensor module, a millimeter wave radar sensor module, a key module, a display module, a solar photovoltaic panel, a lithium battery module, a conversion circuit module and a street lamp load module; the single chip microcomputer module is respectively connected with the photosensitive sensor module, the millimeter wave radar sensor module, the key module and the display module; the conversion circuit module is respectively connected with the solar photovoltaic panel and the lithium battery module;

the key module is used for adjusting the working time and the working mode of the street lamp;

the display module is used for displaying the residual electric quantity of the lithium battery.

2. The solar street lamp control system capable of automatically adjusting brightness according to claim 1, wherein the conversion circuit module further comprises an overcharge protection circuit and an overdischarge protection circuit.

3. The solar street lamp control system capable of automatically adjusting brightness according to claim 1, wherein the street lamp load module controls different brightness of the street lamp through two I/O interfaces of the single chip microcomputer.

4. The solar street lamp control system with the automatic brightness adjustment function according to claim 1, wherein the millimeter wave radar sensor is of a type HLK-LD 116-24G.

5. The solar street lamp control system capable of automatically adjusting brightness according to claim 1, wherein the single chip microcomputer module is AT89C 52.

6. The solar street lamp control system capable of automatically adjusting brightness according to claim 1, wherein the photosensitive sensor module is specifically a photosensitive resistor GL5506 and a comparator LM393 chip.