CN204810647U - Infrared sensing wardrobe uninterrupted power supply LED lamp of adjusting luminance - Google Patents

Abstract

The utility model relates to an electric light source technique specifically is an infrared sensing wardrobe uninterrupted power supply LED lamp of adjusting luminance. Including lamps and lanterns, power rectifier, a battery, the steady voltage chip, infrared sensor, light -off delay circuit, the normally open contact of the rela, transfer optical pulse generator, the pulse PWM driver chip that adjusts luminance, emitting diode LED, wherein, infrared sensor output meets light -off delay circuit, electrical apparatus is succeeded in the output of light -off delay circuit, relay contact points one end is connected with the battery through single -pole double -throw S to power rectifier output DC voltage, another termination steady voltage chip input that contacts end, the output of steady voltage chip connects transfers the optical pulse generator power end, it makes and to hold to transfer optical pulse generator output to connect pulse PWM to adjust luminance driver chip, pulse PWM adjusts luminance driver chip output and meets emitting diode LED, and place lamps and lanterns in. The utility model is suitable for a wardrobe illumination, the nearly wardrobe lamp of people is bright, chooses from, deposits the clothes, and the people is from turning off the light, and the power saving that saves time adds enjoyment.

Description

Infrared sensing wardrobe uninterrupted power supply dimming LED lamp

Technical field

The utility model relates to electric light source technology, specifically a kind of infrared sensing wardrobe uninterrupted power supply dimming LED lamp.

Background technology

White light LEDs high brightness, high-color rendering throw light on as wardrobe, and amusement performance is changed one's clothes to select and wished that light is adjustable, and illumination different color needs, and provide wardrobe to throw light in the occasion of AC power power failure or inconvenience power supply simultaneously.

Summary of the invention

The purpose of this utility model is to provide the illumination of wardrobe uninterrupted power supply, and the nearly wardrobe lamp of people is bright, chooses from or deposits clothes, and people leaves a kind of infrared sensing wardrobe uninterrupted power supply dimming LED lamp that the of short duration time delay of wardrobe is turned off the light automatically.

Technical solution of the present utility model: comprise light fixture, power rectifier, battery, voltage stabilizing chip, infrared sensor, light-off delay circuit, relay, dimmer pulse generator, pulse PWM light modulation driving chip, LED, wherein, infrared sensor exports and connects light-off delay circuit, light-off delay circuit exports and connects relay, power rectifier output dc voltage is connected relay contact one end and infrared sensor power end with battery through single-pole double-throw switch (SPDT) S, light-off delay circuit power end, the input of another termination voltage stabilizing chip of relay contact and pulse PWM light modulation driving chip power end, voltage stabilizing chip output connects dimmer pulse generator power end, dimmer pulse generator pulse output end meets pulse PWM light modulation driving chip Enable Pin CE, pulse PWM light modulation driving chip output LX is through inductance L ₁shunt capacitance C ₇with LED anode, the Schottky diode D of pulse PWM light modulation driving chip output LX also earth ₁, LED negative electrode meets electric capacity C ₇with sampling resistor R ₃connect pulse PWM light modulation driving chip error simultaneously and amplify FB end, the GND of voltage stabilizing chip, dimmer pulse generator, pulse PWM light modulation driving chip holds ground connection, LED is placed in light fixture, infrared sensor and dimming driving circuit are put outside wardrobe, light-emitting diode (LED) lamp is arranged on wardrobe illumination, and power rectifier input meets AC power AC220V.

Dimmer pulse generator by time base chip IC ₂, resistance R ₁, R ₂, potentiometer RP ₁, electric capacity C ₁, C ₂composition, resistance R ₁, potentiometer RP ₁, resistance R ₂, electric capacity C ₁connect successively, resistance R ₁base chip IC when connecing ₂power end, potentiometer RP ₁, resistance R ₂base chip IC when contact connects ₂dIS end, potentiometer RP ₁, electric capacity C ₁base chip IC when contact connects ₂comparator input terminal, electric capacity C ₁, C ₂ground connection, dimmer pulse generator exports and connects pulse PWM light modulation driving chip Enable Pin, regulator potentiometer RP ₁change pulse frequency and duty ratio, cause LED average current to change and reach light modulation;

Light-off delay circuit by time base chip IC ₄, resistance R ₇, potentiometer RP ₂, electric capacity C ₈the timing of composition monostable flipflop, infrared sensor exports and connects base chip IC when triode VT triggers ₄input, time base chip IC ₄output contact relay.

The utility model produces useful good effect: it is bright that people walks close to wardrobe lamp, selects or deposits clothes, and turn off the light after people leaves away, power saving saves time, and increases enjoyment.Be equipped with when battery makes up AC power power failure or AC power inconvenience power supply occasion and power, potentiometer RP ₁stepless dimming LED lamp, potentiometer RP ₂adjust time of turning off the light.

Accompanying drawing explanation

Fig. 1 the utility model theory diagram

Fig. 2 infrared sensing wardrobe uninterrupted power supply dimming LED lamp circuit

Embodiment

With reference to Fig. 1, Fig. 2, the utility model embodiment and embodiment: comprise light fixture, power rectifier 4, battery, voltage stabilizing chip 5, infrared sensor 1, light-off delay circuit 2, relay K 3, dimmer pulse generator 6, pulse PWM light modulation driving chip 7, LED 8, wherein, infrared sensor 1 exports and connects light-off delay circuit 2, light-off delay circuit 2 exports and connects relay K 3, and power rectifier 4 output dc voltage is connected relay contact K with battery through single-pole double-throw switch (SPDT) S _-1one end, infrared sensor 1 power end, light-off delay circuit 2 power end, relay contact K _-1the input of another termination voltage stabilizing chip 5 and pulse PWM light modulation driving chip 7 power end, voltage stabilizing chip 5 exports termination dimmer pulse generator 6 power end, dimmer pulse generator 6 exports termination pulse PWM light modulation driving chip 7 Enable Pin CE, and pulse PWM light modulation driving chip 7 output LX is through inductance L ₁shunt capacitance C ₇with LED 8 anode, the Schottky diode D of pulse PWM light modulation driving chip 7 output LX also earth ₁, LED 8 negative electrode meets electric capacity C ₇with sampling resistor R ₃connect pulse PWM light modulation driving chip 7 error simultaneously and amplify FB end, the GND of voltage stabilizing chip 5, dimmer pulse generator 6, pulse PWM light modulation driving chip 7 holds ground connection, LED 8 is placed in light fixture, infrared sensor 1 and dimming driving circuit plate are put near wardrobe, LED 8 lamp installation is thrown light at wardrobe, and power rectifier 4 input meets AC power AC220V.

When people walks close to wardrobe, infrared sensor induction output voltage, triggers light-off delay circuit IC through triode VT ₄set, relay K adhesive, contact K _-1connect voltage stabilizing chip power, voltage stabilizing chip output voltage supply dimmer pulse generator, pulse PWM light modulation driving chip drive LED automatically to light, light-off delay circuit supply voltage V simultaneously _dDthrough resistance R ₇, potentiometer RP ₂to electric capacity C ₈charging, people leaves away wardrobe electric capacity C ₈electric discharge, IC ₄upset, relay contact K _-1release, dimmer pulse generator, pulse PWM light modulation driving chip have a power failure, and LED extinguishes, and selecting for changing one's clothes, depositing, power saving saves time, and increases enjoyment.

Embodiment infrared sensor model AMNI, built-in infrared window optical filtering, infrared sensor, amplifier, comparator, output Shaping and voltage stabilizing, it is small and exquisite easy for installation that TO-5 encapsulates the bodily form, horizontal angle 100 °, vertical angle 82 °.Dimmer pulse generator IC ₂with light-off delay circuit IC ₄model 555, voltage stabilizing chip model 7806, pulse PWM light modulation driving chip model PT4105, driving power 3W wardrobe dimming LED lamp throws light on.

Charge to battery E while AC power illumination, as AC power has a power failure or inconvenience connection AC power, switch S is placed in powered battery.

Claims (2)

1. an infrared sensing wardrobe uninterrupted power supply dimming LED lamp, comprise light fixture, power rectifier, it is characterized in that: also comprise battery, voltage stabilizing chip, infrared sensor, light-off delay circuit, relay, dimmer pulse generator, pulse PWM light modulation driving chip, LED, wherein, infrared sensor exports and connects light-off delay circuit, light-off delay circuit exports and connects relay, power rectifier output dc voltage is connected relay contact one end and infrared sensor power end with battery through single-pole double-throw switch (SPDT) S, light-off delay circuit power end, the input of another termination voltage stabilizing chip of relay contact and pulse PWM light modulation driving chip power end, voltage stabilizing chip output connects dimmer pulse generator power end, dimmer pulse generator pulse output end meets pulse PWM light modulation driving chip Enable Pin CE, pulse PWM light modulation driving chip output LX is through inductance L ₁shunt capacitance C ₇with LED anode, the Schottky diode D of pulse PWM light modulation driving chip output LX also earth ₁, LED negative electrode meets electric capacity C ₇with sampling resistor R ₃connect pulse PWM light modulation driving chip error simultaneously and amplify FB end, the GND of voltage stabilizing chip, dimmer pulse generator, pulse PWM light modulation driving chip holds ground connection, LED is placed in light fixture, infrared sensor and dimming driving circuit are put outside wardrobe, light-emitting diode (LED) lamp is arranged on wardrobe illumination, and power rectifier input meets AC power AC220V.

2. infrared sensing wardrobe uninterrupted power supply dimming LED lamp according to claim 1, is characterized in that: dimmer pulse generator by time base chip IC ₂, resistance R ₁, R ₂, potentiometer RP ₁, electric capacity C ₁, C ₂composition, resistance R ₁, potentiometer RP ₁, resistance R ₂, electric capacity C ₁connect successively, resistance R ₁base chip IC when connecing ₂power end, potentiometer RP ₁, resistance R ₂base chip IC when contact connects ₂dIS end, potentiometer RP ₁, electric capacity C ₁base chip IC when contact connects ₂comparator input terminal, electric capacity C ₁, C ₂ground connection, dimmer pulse generator exports and connects pulse PWM light modulation driving chip Enable Pin, regulator potentiometer RP ₁change pulse frequency and duty ratio, cause LED average current to change and reach light modulation;

Light-off delay circuit by time base chip IC ₄, resistance R ₇, potentiometer RP ₂, electric capacity C ₈the timing of composition monostable flipflop, infrared sensor exports and connects base chip IC when triode VT triggers ₄input, time base chip IC ₄output contact relay.