CN212278510U

CN212278510U - Control system capable of automatically adjusting illumination of lamp

Info

Publication number: CN212278510U
Application number: CN202021099045.6U
Authority: CN
Inventors: 王永冰; 施永华
Original assignee: Jiangmen Liangdu Lighting Technology Co ltd
Current assignee: Guangdong Kaili Lighting Technology Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-01-01
Anticipated expiration: 2030-06-15

Abstract

A control system for automatically adjusting the illumination of a lamp comprises an illumination sensor, an illumination comparator, a constant-current driving power supply and an LED lamp group; the constant current driving power supply comprises a rectification filter circuit, the output end of the rectification filter circuit is connected to an IC power supply circuit, the output end of the IC power supply circuit and the illuminance comparator are connected to a master control IC, the output end of the master control IC is connected to a constant current driving circuit, and the output end of the constant current driving circuit is connected to the LED lamp set. The utility model discloses an illuminance sensor detects application environment's real-time illuminance value, and the illuminance comparator is than real-time illuminance value and predetermines the illuminance value, according to the output current of comparative result instruction master control IC adjustment constant current drive circuit for real-time illuminance value automatic keep with predetermine the illuminance value the same, both can avoid extravagant electric energy and can avoid the not enough impaired eyesight of ambient brightness.

Description

Control system capable of automatically adjusting illumination of lamp

Technical Field

The utility model relates to a LED lamps and lanterns control system specifically discloses a control system of automatically regulated lamps and lanterns illuminance.

Background

The existing lighting system is generally manually selected to be turned on or off according to the actual lighting environment, and the illumination intensity of the lighting system is kept unchanged after the lighting system is turned on. In a commercial lighting environment, illumination during the night is mainly provided by a lighting lamp, illumination during the daytime consists of the lighting lamp and natural light, the illumination time is longer when the lamp is started during the daytime, the illumination intensity of the natural light is changed along with time when the illumination intensity of the lighting lamp is constant, and the electricity consumption of the lamp is wasted when the intensity of the natural light is higher; when the natural light is weak, the illumination lamp is not turned on in time, so that the environment brightness is insufficient, and the eyes are tired and the eyesight is damaged.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the problems in the prior art, it is necessary to provide a control system capable of automatically adjusting the illumination of a lamp, which can change with the change of the natural light intensity and keep the illumination of the lighting environment constant.

In order to solve the prior art problem, the utility model discloses a control system for automatically adjusting the illumination of a lamp, which comprises an illumination sensor, an illumination comparator, a constant current driving power supply and an LED lamp group; the constant current driving power supply comprises a rectification filter circuit, the output end of the rectification filter circuit is connected to an IC power supply circuit, the output end of the IC power supply circuit and the illumination comparator are connected to a master control IC, the output end of the master control IC is connected to a constant current driving circuit, and the output end of the constant current driving circuit is connected to an LED lamp set; the illumination sensor detects a real-time illumination value of an application environment and transmits the real-time illumination value to the illumination comparator, the illumination comparator compares the real-time illumination value with a set illumination value, and the main control IC is instructed to adjust the output current of the constant current driving circuit according to a comparison result.

The utility model has the advantages that: the utility model discloses an illuminance sensor detects application environment's real-time illuminance value, and the illuminance comparator is than real-time illuminance value and predetermines the illuminance value, according to the output current of comparative result instruction master control IC adjustment constant current drive circuit for real-time illuminance value automatic keep with predetermine the illuminance value the same, both can avoid extravagant electric energy and can avoid the not enough impaired eyesight of ambient brightness.

Drawings

Fig. 1 is a block diagram of the system structure of the present invention.

Fig. 2 is a schematic diagram of the circuit structure of the present invention.

Fig. 3 is a control schematic diagram of the present invention.

Detailed Description

For further understanding of the features and technical means, as well as the specific objects and functions of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1. A control system for automatically adjusting the illumination of a lamp comprises an illumination sensor 1, an illumination comparator 2, a constant current driving power supply 3 and an LED lamp group 4. The LED lamp set 4 may be an LED lamp composed of a plurality of LED lamp beads, or a lamp combination composed of a plurality of LED lamps. The constant current driving power supply 3 comprises a rectifying and filtering circuit 31, wherein the input end of the rectifying and filtering circuit 31 is connected with the commercial power, the output end of the rectifying and filtering circuit 31 is connected to an IC power supply circuit 32, the output end of the IC power supply circuit 32 is connected to a main control IC30, the output end of a main control IC30 is connected to a constant current driving circuit 33, and the output end of the constant current driving circuit 33 is connected to the LED lamp set 4. Still be connected with illuminance comparator 2 on the master control IC30, illuminance comparator 2 can be connected to illuminance sensor 1 through wired or wireless mode, the utility model discloses preferably wireless transmission mode.

Refer to fig. 2. The main control IC30 includes a chip power supply pin VCC, a feedback signal sampling pin FB, a loop compensation pin COMP, a chip ground pin GND, an analog dimming signal input pin DIM, a pulse width modulation signal input pin PWM, a driving signal output pin GATE, and a primary current sampling pin CS. The rectifying and filtering circuit 31 includes a patch bridge stack 311 and a first capacitor C1 connected to an output terminal of the patch bridge stack 311, where the output terminal includes a positive output terminal and a ground terminal. The IC power supply circuit 32 includes a first resistor R1 connected to the positive output terminal of the rectifying and filtering circuit 31, and the first resistor R1 is connected to the ground terminal through a second capacitor C2; the energy storage device comprises a second resistor R2 and a third resistor R3 which are connected in series, and an energy storage inductor L which is connected with the second resistor R2 and the third resistor R3 in parallel, wherein one end of the second resistor R2, one end of the third resistor R3 and one end of the energy storage inductor L1 are grounded, and the other end of the second resistor R2, one end of the third resistor R3 and one end of the energy storage inductor L1 are connected between the first resistor R1 and the second capacitor C2 through a first backward diode. A power supply pin VCC of the master IC30 is connected between the first resistor R1 and the first capacitor C1, a feedback signal sampling pin FB is connected between the second resistor R2 and the third resistor R3, a loop compensation pin COMP is connected to a ground terminal through the third capacitor C3, and a chip ground pin GND is connected to the ground terminal. The constant current driving circuit 33 comprises an MOS tube 331 and a current transformer 332; the GATE of the MOS transistor 331 is connected to the driving signal output pin GATE of the main control IC30, and the source thereof and the primary side current sampling pin CS of the main control IC30 are connected to the ground terminal through the fourth resistor R4; the input end of the current transformer 332 is connected to the positive output end of the rectifying and filtering circuit 31 and the drain of the MOS transistor, and the input end of the current transformer 332 is further connected with an RC parallel circuit 333 and a second reverse diode D2 connected in series with the RC parallel circuit 333; the output end of the current transformer 332 is connected in series with a forward diode D and a fourth capacitor C4. The LED lamp set 4 is connected in parallel with the fourth capacitor C4. And the pulse width modulation signal input pin PWM is connected with a signal comparator. The analog dimming signal input pin DIM is connected to the ground terminal through the fifth capacitor C5.

Refer to fig. 3. The utility model discloses a control principle is: the illumination sensor 1 detects a real-time illumination value of an application environment and transmits the real-time illumination value to the illumination comparator 2; the illumination comparator 2 receives the real-time illumination value, compares the real-time illumination value with a preset illumination value, and sends a power increasing instruction to the constant-current driving power supply 3 if the real-time illumination value is smaller than the preset illumination value; if the real-time illuminance value is larger than the preset illuminance value, sending a power reduction instruction to the constant current driving power supply 3; and if the real-time illumination value is the same as the preset illumination value, no instruction is sent.

The utility model discloses an illuminance sensor detects application environment's real-time illuminance value, and the illuminance comparator is than real-time illuminance value and predetermines the illuminance value, according to the output current of comparative result instruction master control IC adjustment constant current drive circuit for real-time illuminance value automatic keep with predetermine the illuminance value the same, both can avoid extravagant electric energy and can avoid the not enough impaired eyesight of ambient brightness.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a control system of automatically regulated lamps and lanterns illuminance which characterized in that: the LED illumination device comprises an illumination sensor, an illumination comparator, a constant current driving power supply and an LED lamp group; the constant current driving power supply comprises a rectification filter circuit, the output end of the rectification filter circuit is connected to an IC power supply circuit, the output end of the IC power supply circuit and the illumination comparator are connected to a master control IC, the output end of the master control IC is connected to a constant current driving circuit, and the output end of the constant current driving circuit is connected to an LED lamp set; the illumination sensor detects a real-time illumination value of an application environment and transmits the real-time illumination value to the illumination comparator, the illumination comparator compares the real-time illumination value with a set illumination value, and the main control IC is instructed to adjust the output current of the constant current driving circuit according to a comparison result.

2. The control system of claim 1, wherein the control system is further configured to: the master control IC comprises a chip power supply pin, a chip grounding pin, a pulse width modulation signal input pin and a driving signal output pin; the rectification filter circuit comprises a patch bridge stack and a first capacitor connected to the output end of the patch bridge stack, and the output end of the rectification filter circuit comprises a positive output end and a ground end; the IC power supply circuit comprises a first resistor connected with the positive electrode output end of the rectification filter circuit, the first resistor is connected to a grounding end through a second capacitor, and a power supply pin of the master control IC is connected between the first resistor and the second capacitor; the constant current driving circuit comprises an MOS tube and a current transformer, wherein the grid electrode of the MOS tube is connected to a driving signal output pin of the main control IC, and the source electrode of the MOS tube is connected to a grounding end; the input end of the current transformer is respectively connected to the anode output end of the rectifying and filtering circuit and the drain electrode of the MOS tube, and the output end of the current transformer is connected to the LED lamp bank.

3. The control system of claim 2, wherein the control system is further configured to: the master control IC also comprises a feedback signal sampling pin, a loop compensation pin and a primary side current sampling pin; the IC power supply circuit also comprises a second resistor, a third resistor and an energy storage inductor, wherein the second resistor and the third resistor are connected in series, the energy storage inductor is connected with the second resistor and the third resistor in parallel, one end of the second resistor, one end of the third resistor and one end of the energy storage inductor are connected to a grounding end, and the other end of the second resistor, one end of the third resistor and one end of the energy storage inductor are connected between the first resistor and the second capacitor through a first; a feedback signal sampling pin of the master control IC is connected between the second resistor and the third resistor, and a loop compensation pin is connected to a ground terminal through a third capacitor; the primary side current sampling pin of the master control IC and the source electrode of the MOS tube of the constant current driving circuit are connected to a grounding end through a fourth resistor; the input end of the current transformer is also connected with an RC parallel circuit and a second reverse diode connected with the RC parallel circuit in series; the output end of the current transformer is connected with a forward diode and a fourth capacitor in series, and the LED lamp bank is connected with the fourth capacitor in parallel.