CN201039533Y - A time division and automatic LED road lamp controller - Google Patents

Abstract

The utility model belongs to a period-dividing and automated LED street lamp controller used for the power supply and control of the outdoor street lamp lightening system on the city roads and community industrial plant areas. The period-dividing and automated LED street lamp belonging to the technical field of automatic control realizes automatic optic-control and time-control, so as to ensure steady voltage and power energy conservation. The period-dividing and automated LED street lamp comprises a switching power supply output terminal, the impulse width modulating input terminal of a voltage-increasing and constant current module, and a controlling circuit connected between the switching power supply output terminal and the impulse width modulating input terminals of the voltage-increasing and constant current module. The controlling circuit is provided with a single-sheet machine chip and a photoconductive resistor, one end of the photoconductive resistor is connected with the voltage guiding pin terminal of the single-sheet machine chip by a resisting unit, and the other end is grounding. According to the light-inductive principle of the photoconductive resistor and the running control of the programme of the single-sheet machine chip, the utility model has the advantages of automatic control, time-dividing adjusted light strength, energy conservation, convenient walking and resting, night scene beautification, which is also beneficial to reinforcing social security preventing, improving working stability as well as prolonging service life, etc.

Description

A time-divided, automatic LED street lamp controller

Technical field

The utility model belongs to the technical field of automatic control, particularly relates to the power supply and control of outdoor street lamp lighting systems such as urban roads, communities, and industrial factories, and realizes automatic light control and time control to ensure stable voltage and save electric energy. Automatic LED street light controller.

Background technique

Street lamps are widely used in the lighting of squares, roads, residential areas and other places in modern cities. The control of traditional lighting street lamps adopts the manual closing method. In the evening, the operator closes the switch to turn on the street lamps; The operator pulls the switch and turns off the street lamp, which makes the street lamp a lamp that is turned on all night. Therefore, the street lamp controller used to control the opening and closing of the street lamp has a broad market. Although there are also automatic control types, it is usually the whole road The street lights of the road are turned on and extinguished simultaneously, so that the street lights are all turned on in the middle of the night like this, and the light environment is seriously polluted, which affects people's rest.

Therefore, someone adopts fixed clock control, photoelectric control or computer control technology to relatively solve the above problems. However, when the fixed clock is controlled, because the device structure is too simple, the time position corresponding to the opening contact in the fixed clock is adjusted to turn on and off the street light at a fixed time. At the same time, the difference between day and night is too large throughout the year, and the control time deviation is extremely large , affect the time and effect of lighting at night; the use of photoelectric control is to use the intensity of light to control the on and off of street lights, so that although it will not be affected by the weather, it cannot achieve "midnight light" control, which makes it urgent in the second half of the night. It is inconvenient for people to walk, and it will also bring about difficulties in social security and prevention; while using computer control, the device structure is complex, the cost is too high, and there is a fatal weakness. Once the power is cut off, the device will not work normally.

Contents of the invention

In view of this, the purpose of this utility model is to solve the above-mentioned problems, to provide an automatic control, energy saving, convenient walking and rest at night, beautifying the night scene, strengthening social security prevention, good working stability and long service life. A time-segmented, automatic LED street lamp controller.

In order to achieve the above purpose, the technical solution adopted by the utility model is a time-segmented, automatic LED street lamp controller, including the output terminal of the switching power supply, the pulse width modulation input terminal of the boost constant current module, and the output terminal connected to the switching power supply and the booster. The control circuit between the pulse width modulation input terminals of the voltage constant current module is characterized in that: the control circuit is provided with a single-chip microcomputer chip and a photosensitive resistor, and one end of the photosensitive resistor is connected to the voltage pin end of the single-chip microcomputer chip through an impedance element, The other end is grounded.

The controller also includes a low-voltage DC power supply circuit.

The low-voltage DC power supply circuit is composed of a diode, a resistor, a capacitor and a three-terminal voltage regulator, wherein the output terminal of the switching power supply is sequentially connected to the diode, the resistor and the input terminal of the three-terminal voltage regulator to output its low voltage. One end of the capacitor is connected in parallel with the input end of the three-terminal voltage stabilizer and the output end of the three-terminal voltage stabilizer, and the other end of the parallel-connected capacitor is grounded respectively.

The pins of the single-chip microcomputer chip are connected with an external clock pulse circuit.

The clock pulse circuit is composed of a capacitor and a crystal oscillator, wherein two capacitors are connected in parallel, one end is grounded, and the other end is respectively connected to two ends of the crystal oscillator, one end of the crystal oscillator is connected to a pin of the single-chip microcomputer chip, and the other end of the crystal oscillator is connected to the other pin. pin connection.

The pins of the single-chip microcomputer chip are also connected with an interface socket for writing an external program.

Compared with the prior art, the utility model has the beneficial effects that: the utility model connects a control circuit between the output terminal of the switching power supply and the pulse width modulation input terminal of the boost constant current module, and the control circuit is provided with a single-chip microcomputer chip and a photosensitive Resistance, when the photosensitive electron receives light, the current flowing through the photoresistor increases with the increase of light; when the incident light disappears, the current also gradually decreases. Therefore, according to the photosensitive principle of the photoresistor, when the outdoor sunshine is less than 13LUX, the street lamp will automatically light up under the operation control of the single-chip computer program, and the first 6 hours after automatic lighting will be at full brightness, which is also the first half of the night. It provides convenience for walking and beautifies the environment at the same time; after 6 hours, the street lights are half bright, and the duration is 4 hours, which can save electric energy, prolong the service life of street lights, and provide convenience for people who are in a hurry in the middle of the night. In order to protect public security, it does not affect people's rest; after 10 hours of lighting time, the street lights will automatically turn off, which not only saves electric energy, but also does not affect people's normal life during the day, and the circuit has good working stability.

Description of drawings

Fig. 1 is the circuit schematic diagram of the utility model.

Detailed ways

In order to further understand the structural features of the utility model and the functional benefits that can be achieved, specific embodiments are listed, and detailed descriptions are as follows in conjunction with the accompanying drawings:

A time-divided, automatic LED street lamp controller, as shown in Figure 1, the switching power supply output terminal of the LED street lamp controller is connected to the DC power supply input terminal, and the DC power supply circuit is composed of a diode, a resistor, a capacitor and a three-terminal voltage regulator Composition, in which, the output terminal of the switching power supply outputs its DC (21V-27V) voltage and is sequentially connected to the step-down diode D2, the resistor R1 and the input terminal of the three-terminal voltage regulator U1 to output its low voltage. At the same time, to ensure that the output voltage is more Stable, between the output terminal of resistor R1 and the input terminal of three-terminal voltage regulator U1, the output terminal of three-terminal voltage regulator U1 is connected to one end of electrolytic capacitor C1 and ordinary capacitor C2, electrolytic capacitor C3 and ordinary capacitor C4 respectively They are connected in parallel in sequence, and the other ends of the electrolytic capacitors C1 and C3, and the common capacitors C2 and C4 are respectively grounded.

A control circuit is connected between the switching power supply output terminal and the pulse width modulation (PWM) input terminal of the step-up constant current module. The control circuit is provided with a single-chip microcomputer chip U2 and a photoresistor CDS, and one end of the photoresistor CDS passes through a resistor R2 is connected to pin 6 of the single-chip microcomputer chip, the other end of the photoresistor CDS is grounded, and a capacitor C7 is connected in parallel between pin 6 and pin 3 of the single-chip microcomputer chip U2, and at the same time, both ends of the photosensitive resistor CDS are connected in parallel Connect a capacitor C5.

A clock pulse circuit is also connected to the pins 7 and 8 of the single-chip microcomputer chip U2, and the circuit is composed of a capacitor and a crystal oscillator. Among them, the capacitors C8 and C9 are connected in parallel, one end is grounded, and the other end is respectively connected to both ends of the crystal oscillator X1, one end of the crystal oscillator X1 is connected to the pin 7 of the single-chip microcomputer chip U2, and the other end of the crystal oscillator X1 is connected to the pin 8. At the same time, the photosensitive resistor CDS and the resistor R2 are connected to the pin 23 of the single-chip microcomputer chip U2.

The pins of the single-chip microcomputer chip U2 are also connected with an interface socket J1 for writing an external program. The interface socket J1 is provided with 6 pins, 1 pin is grounded, 2 pins are connected to pin 17 of the single-chip microcomputer chip U2, 3 pins are connected to pin 16 of the single-chip microcomputer chip U2, and 4 pins are connected to pin 15 of the single-chip microcomputer chip U2 Connection, pin 5 is connected to pin 29 of the single-chip microcomputer chip U2, and pin 6 is connected to the DC power supply VCC.

During normal operation, when the photoresistor senses that the external sunlight is gradually weakening, that is, when the outdoor sunlight is less than 13LUX, the street lamp is automatically lit through the program operation control written in the interface socket J1, and the first 6 hours after the lighting is full Brightness, after 6 hours, the street light will turn to half-brightness under the control of the program, and the half-brightness will last for 4 hours. From lighting the street light to the end of the half-brightness duration, after about 10 hours of lighting time, the street light will be on again. Automatic shutdown under the control of the program. Moreover, the output terminal of the single-chip microcomputer chip U2 is also connected with the pulse width modulation (PWM) terminal of the step-up constant current module, so that the brightness of the street lamp can be adjusted according to changes in the external environment or specific needs.

In summary, the utility model provides a segmented, automatic LED street lamp controller. After actual production, completion and repeated testing, the utility model achieves the expected purpose of the utility model and effectively solves the problems in the prior art. There are deficiencies. However, the specific embodiments cited above are only further detailed descriptions of the technical features and technical contents of the present utility model, and the drawings shown are only for reference and illustration, and are not used to limit the present utility model.

Claims (6)

1. One kind at times, automation LED controller for road lamp, comprise the pulse width modulation input of Switching Power Supply output, voltage increase and current constant module and be connected the Switching Power Supply output and the pulse width modulation input of voltage increase and current constant module between control circuit, it is characterized in that: described control circuit is provided with singlechip chip and photo resistance, one end of this photo resistance is connected other end ground connection by impedance component with the voltage pin end of singlechip chip.
2. 2. according to claim 1 at times, automation LED controller for road lamp, it is characterized in that: described controller also comprises the low-voltage DC source circuit.
3. 3. according to claim 2 at times, automation LED controller for road lamp, it is characterized in that: described low-voltage DC source circuit is made up of diode, resistance, electric capacity and three terminal regulator, wherein, the be linked in sequence input of diode, resistance and three terminal regulator of Switching Power Supply output, export its low-voltage, simultaneously, between the input of resistance and three terminal regulator and be connected in parallel a respectively end of electric capacity of the output of three terminal regulator, the other end that should and connect electric capacity is ground connection respectively.
4. 4. according to claim 1 at times, automation LED controller for road lamp, it is characterized in that: the pin of described singlechip chip is connected with the external clock pulse circuit.
5. 5. according to claim 4 at times, automation LED controller for road lamp, it is characterized in that: described clock-pulse circuit is made up of electric capacity and crystal oscillator, wherein, two electric capacity parallel connections, one end ground connection, the other end is connected with the two ends of crystal oscillator respectively, and an end of crystal oscillator is connected with a pin of singlechip chip, and the other end of crystal oscillator is connected with another pin.
6. 6. according to claim 1 at times, automation LED controller for road lamp, it is characterized in that: also be connected with the interface socket that external program writes on the pin of described singlechip chip.

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