CN203104915U

CN203104915U - LED (light emitting diode) lamp intelligent controller

Info

Publication number: CN203104915U
Application number: CN2013201112448U
Authority: CN
Inventors: 孙元柱
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-12
Filing date: 2013-03-12
Publication date: 2013-07-31
Anticipated expiration: 2023-03-12

Abstract

The utility model discloses an LED (light emitting diode) lamp intelligent controller. An internal power circuit and an LED drive circuit in the LED lamp intelligent controller are together connected with an external switch power supply of the LED lamp intelligent controller through a switch power supply end K; an illuminance control circuit is connected with a control input end of the LED drive circuit through a control output end; and the LED drive circuit is connected with an anode of an external LED string through a drive output positive end and connected with a cathode of the external LED string through a drive output negative end. ISL29004 is used as an optical signal sensor, LM3402HV is used as a high-power LED driver, and components with a unified working voltage value are adopted so as to avoid additional filtration of infrared light to realize circuit simplification and show higher conversion. The luminous intensity of an LED lamp is automatically adjusted according to the intensity of the field natural light, and constant illuminance is always maintained. The LED lamp intelligent controller disclosed by the utility model is applied to automatic dimming control on the illumination of the LED lamp.

Description

LED lamp intelligent controller

Technical field

The utility model relates to a kind of LED control device with an automatic light meter that throws light on.

Background technology

The throw light on shortcoming of control system with an automatic light meter of known LED has: 1. often adopt normal optical sensor light signal, in fact, the normal optical sensor to light signal comprise visible light and two compositions of infrared light, in system design, need additionally to consider the influence of filtering infrared light; 2. control circuit more complicated, not only the controller volume is too big, and influence stability.

Summary of the invention

Throw light on and need the shortcoming of extra filtering infrared light, circuit complexity in the control system with an automatic light meter in order to overcome known LED, the utility model provides a kind of LED lamp intelligent controller, and this LED lamp intelligent controller additionally filtering infrared light, circuit is simple.

The technical solution of the utility model is: this LED lamp intelligent controller has interior power supply circuit, led drive circuit, the illuminance testing circuit, the illuminance control circuit, wherein, interior power supply circuit and led drive circuit join by the external switch power supply of Switching Power Supply end K and this LED lamp intelligent controller jointly, the DC3.3V that interior power supply circuit produces links to each other with illuminance control circuit input supply terminal D ' with the illuminance testing circuit by out-put supply end D, the illuminance control circuit links to each other with the control input end P ' of led drive circuit by control output end P, and led drive circuit links to each other with the positive pole of external LED string by driving output plus terminal L+, led drive circuit links to each other with the negative pole of external LED string by driving output negative terminal L-.

Advantage of the present utility model: adopt ISL29004 to unify the components and parts of operational voltage value as high-power LED driver, employing as optical signal sensor, employing LM3402HV, to avoid the simplification of extra filtering infrared light, realization circuit, present higher conversion simultaneously again.Circuit is simple, the stability height.Circuit conversion efficient is up to 98%.Strong and weak luminous intensity of regulating the LED lamp automatically according to on-the-spot natural daylight remains constant illuminance, under the condition that satisfies the illuminance demand, and economize on electricity to greatest extent.

Description of drawings

Fig. 1 is interior power supply circuit of the present utility model and led drive circuit.

Fig. 2 is illuminance testing circuit of the present utility model and illuminance control circuit.

Embodiment

In Fig. 1 and Fig. 2, interior power supply circuit and led drive circuit join by the external switch power supply of Switching Power Supply end K and this LED lamp intelligent controller jointly, the DC3.3V that interior power supply circuit produces links to each other with illuminance control circuit input supply terminal D ' with the illuminance testing circuit by out-put supply end D, and the illuminance control circuit links to each other with the control input end P ' of led drive circuit by control output end P.Led drive circuit links to each other with the positive pole of external LED string by driving output plus terminal L+, links to each other with the negative pole of external LED string by driving output negative terminal L-.

In Fig. 1, from the DC48V voltage of the external switch power supply of this LED lamp intelligent controller, through capacitor C 1, capacitor C 2 and capacitor C 5 and road ground connection, connect 1 pin of integrated circuit LM78H03-500, connect 6 pin of integrated circuit LM3402HV through resistance R 1, connect 8 pin of LM3402HV; The 2 pin ground connection of integrated circuit LM78H03-500, the 3 foot meridian capacitor C3 of integrated circuit LM78H03-500 and capacitor C 4 and road ground connection, through the voltage of D end output DC3.3V; The 7 foot meridian capacitor C6 ground connection of integrated circuit LM3402HV, 3 pin connect from the P of Fig. 2 end, 4 pin ground connection through P ', and 5 pin of integrated circuit LM3402HV connect the negative pole that drives output plus terminal L+ end, exports negative terminal L-termination external LED string through driving through resistance R 2 ground connection, through capacitor C 8; 1 pin of integrated circuit LM3402HV through negative electrode, the plus earth of controllable silicon DW1, connects 2 pin through capacitor C 7 successively, connects the left end of inductance L 1; The right-hand member of inductance L 1 is through driving the positive pole that output plus terminal L+ connects the external LED string.

In Fig. 2,3 pin of integrated circuit ISL29004 are unsettled through potentiometer RX ground connection, 2 pin ground connection, 6 pin, 4 pin ground connection, 5 pin ground connection, 1 pin meet DC3.3V, 8 pin of integrated circuit ISL29004 meet DC3.3V, connect 1 pin of integrated circuit P82B96 through

resistance R

6, and 7 pin of integrated circuit ISL29004 meet DC3.3V, connect 7 pin of integrated circuit P82B96 through resistance R 5; DC3.3V is through capacitor C 9 ground connection; The 4 pin ground connection of integrated circuit P82B96,8 pin meet DC3.3V, 2 pin of integrated circuit P82B96,3 pin and connect after connect 18 pin of integrated circuit P87LPC768,2 pin of integrated circuit P82B96 meet DC3.3V through

resistance R

4,5 pin of integrated circuit P82B96,6 pin and connect after connect integrated circuit P87LPC768 10 pin, meet DC3.3V through resistance R 3; The 5 pin ground connection of integrated circuit P87LPC768,15 pin meet DC3.3V, the 1 pin control input end P ' through control output end P map interlinking 1.

Operation principle:

1. drive: the direct voltage (is example with DC48V) of external switch power supply output, the led drive circuit through components and parts such as integrated circuit LM3402HV are formed converts the constant current of DC330mA to, drives the 1W LED of 10 to 12 series connection.It is pointed out that the led drive circuit that utilizes a LM3402HV to form can only drive 1 string LED, should use the quantity of LM3402HV in the reality according to the quantity decision of LED string.

2. light modulation: will the throw light on illuminance signal of on-the-spot certain given position of sensor IC ISL29004, through buffer integrated circuit P82B96, send single-chip microcomputer integrated circuit P87LPC768 to, single-chip microcomputer integrated circuit P87LPC768 compares this signal with the set-point that pre-sets, to the integrated circuit LM3402HV of led drive circuit output pulse width modulation signal PWM, to regulate the on-the-spot illuminance of illumination, keep its value constant.Specifically, if the signal that integrated circuit ISL29004 senses is bigger than set-point, then single-chip microcomputer integrated circuit P87LPC768 reduces the pulsewidth of PWM; If the signal that integrated circuit ISL29004 senses is littler than set-point, then single-chip microcomputer integrated circuit P87LPC768 increases the pulsewidth of PWM.

3. set illuminance:, all can set the on-the-spot illuminance of illumination as required by the program of reference resistance on the adjusting integrated circuit ISL29004 or modification integrated circuit P87LPC768.

Claims

1. LED lamp intelligent controller, this LED lamp intelligent controller has interior power supply circuit, led drive circuit, the illuminance testing circuit, the illuminance control circuit, it is characterized in that: interior power supply circuit and led drive circuit join by the external switch power supply of Switching Power Supply end and this LED lamp intelligent controller jointly, the DC3.3V that interior power supply circuit produces links to each other with illuminance control circuit input supply terminal with the illuminance testing circuit by the out-put supply end, the illuminance control circuit links to each other with the control input end of led drive circuit by the control output end, and led drive circuit links to each other with the positive pole of external LED string by driving output plus terminal, led drive circuit links to each other with the negative pole of external LED string by driving the output negative terminal.