CN202475889U - Automatic human body infrared sensing electric lamp for writing desk - Google Patents
Automatic human body infrared sensing electric lamp for writing desk Download PDFInfo
- Publication number
- CN202475889U CN202475889U CN2012200883523U CN201220088352U CN202475889U CN 202475889 U CN202475889 U CN 202475889U CN 2012200883523 U CN2012200883523 U CN 2012200883523U CN 201220088352 U CN201220088352 U CN 201220088352U CN 202475889 U CN202475889 U CN 202475889U
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- human body
- integrated chip
- relay
- signal controlling
- electric lamp
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Abstract
The utility model relates to the technical filed of electric light source lighting, in particular to an automatic human body infrared sensing electric lamp for a writing desk. The output of a human body infrared pyroelectric sensor is connected into a signal control integrated chip by an adjustable resistor, bias voltage is introduced into a photoresistor, then the photoresistor is connected into the signal control integrated chip, the output of the signal control integrated chip is connected into a drive relay of a triode current amplifier through a current-limiting resistor, an electric lamp is inserted into a lamp head and is connected with an alternating-current power supply by a contact of the relay, so that the electric lamp can be switched on and off for lighting automatically by the human body infrared sensing. The automatic human body infrared sensing electric lamp for the writing desk is convenient for work, reading and writing, plays the role of power saving as the electric lamp can be turned off automatically after people leave, and is widely suitable for the lighting of reading and writing at offices and home.
Description
Technical field
The utility model relates to the electric source lighting technical field, specifically is a kind of human-body infrared sensing desk automatic switch electric light.
Background technology
The automatic switch electric light of desk configuration human body infrared induction illumination, not only convenient office, the reading of writing are in time turned off the light automatically and are played the economize on electricity effect.
Summary of the invention
The purpose of the utility model provides a kind of human-body infrared sensing desk automatic switch electric light of human body infrared induction illumination.
The utility model technical solution is: comprise lamp holder, electric light; Also comprise human body pyroelectric infrared sensor, photo resistance, signal controlling integrated chip, triode current amplifier, relay and control circuit DC power supply; Wherein, The output of human body pyroelectric infrared sensor also meets capacitor C 1, adjustable resistance RP; Insert the signal controlling integrated chip by the sliding point in adjustable resistance RP center, photo resistance inserts the signal controlling integrated chip after introducing bias voltage, and the output of signal controlling integrated chip inserts the triode current amplifier through current-limiting resistance and drives relay; Electric light inserts lamp holder and connects AC power through relay contact, the power end connection control circuit DC power supply of human body pyroelectric infrared sensor, photo resistance, signal controlling integrated chip and triode current amplifier and relay;
Human body pyroelectric infrared sensor the place ahead is provided with Fresnel lens, and human body pyroelectric infrared sensor window is aimed at Fresnel lens focal length axle center.
The utility model produces good effect: under the situation that indoor light is not enough, before the people was sitting in desk, lamp will be lighted automatically; Reading, the continuous sense light that writes can not extinguish; After the people left, time-delay lamp in a moment extinguished automatically, in time turns off the light automatically and plays the economize on electricity effect.
Description of drawings
Fig. 1 the utility model technical scheme theory diagram
Fig. 2 human-body infrared sensing desk automatic switch lighting circuit
Embodiment
With reference to Fig. 1, Fig. 2; The utility model practical implementation method and embodiment: comprise lamp holder 6, electric light 7; Also comprise human body pyroelectric infrared sensor 1, photo resistance 3, signal controlling integrated chip 2, triode current amplifier 4, relay 5 and control circuit DC power supply 8; Wherein, 1 output of human body pyroelectric infrared sensor also meets capacitor C 1, adjustable resistance RP; Insert signal controlling integrated chip 2 by the sliding point in adjustable resistance RP center, photo resistance 3 inserts signal controlling integrated chip 3 after introducing bias voltage, and 3 outputs of signal controlling integrated chip insert triode current amplifier 4 through current-limiting resistance and drive relay 5; Electric light 7 inserts lamp holder 6 and connects AC power through relay 5 contacts, the power end connection control circuit DC power supply 8 of human body pyroelectric infrared sensor 1, photo resistance 3, signal controlling integrated chip 2 and triode current amplifier 4 and relay 5.
Fig. 2, the CS19508 of signal controlling integrated chip IC1 digital-to-analogue mixed structure, built-in two-stage high input impedance operational amplifier, voltage comparator, state controller, time-delay and blocking time device and reference voltage source.
Under the situation that indoor light is not enough; Before the people was sitting in desk, the human body radiation infrared ray converted the signal of telecommunication into by pyroelectric sensor X, handled through signal controlling integrated chip IC1 amplification, shaping; Amplify the driving relay J through the triode electric current; The lamp holder B-source is connected in contact JK adhesive, lights electric light D, and people's reading, the continuous sense light that writes can not extinguish.
The people leaves desk, and circuit is in the time-delay state, and electric light D is light yellow still, finishes after the time-delay through setting, and circuit reset, relay J contact JK discharge and cut off B-source, and electric light D extinguishes.
Among the figure, the human body pyroelectric infrared sensor cooperates Fresnel lens to improve sensing sensitivity, and adjustable resistance RP and capacitor C 1 obtain suitable detection infrared radiation distance in order to adjustment sensor output signal intensity, and filtering interfering.Resistance R 1 provides photo resistance R2 bias voltage, and photo resistance R2 testing environment natural light brightness, indoor light are low level when strong; Through resistance R 7 current limlitings triode VT is ended; Relay contact is for often opening, and electric light D can be not bright, then is high level during insufficient light; Make IC1 get into operating state, the people promptly turns on light before being sitting in desk automatically.Electric light can be selected electrodeless lamp or light emitting diode matrix lamp and fluorescent lamp for use.
Resistance R 3, R4 capacitor C 2, C4 form the built-in two-stage calculation amplifier feedback network of IC1 respectively, capacitor C 3 coupling two stage amplifers.Resistance R 5 capacitor C 5 determine time of delay, and resistance R 6 capacitor C 6 trigger the timing element of blocking times, when energized, make circuit after time-delay, get into operating state again, to prevent misoperation.Resistance R 8 is ICI grounded circuits.The control circuit DC power supply is by capacitor C 9 and resistance R 9 incoming transport power supply AC220V, diode VD1 rectification, and capacitor C 7, C8 filtering, the integrated circuit job stability is guaranteed in diode VD2 voltage stabilizing and twice voltage stabilizing of circuit of three-terminal voltage-stabilizing integrated IC2.
Claims (2)
1. human-body infrared sensing desk automatic switch electric light; Comprise lamp holder, electric light; It is characterized in that: also comprise human body pyroelectric infrared sensor, photo resistance, signal controlling integrated chip, triode current amplifier, relay and control circuit DC power supply; Wherein, the output of human body pyroelectric infrared sensor also meets capacitor C 1, adjustable resistance RP, inserts the signal controlling integrated chip by the sliding point in adjustable resistance RP center; Photo resistance connects the signal controlling integrated chip after introducing bias voltage; The output of signal controlling integrated chip inserts the triode current amplifier through current-limiting resistance and drives relay, and electric light inserts lamp holder and connects AC power through relay contact, the power end connection control circuit DC power supply of human body pyroelectric infrared sensor, photo resistance, signal controlling integrated chip and triode current amplifier and relay.
2. human-body infrared sensing desk automatic switch electric light according to claim 1, it is characterized in that: human body pyroelectric infrared sensor the place ahead is provided with Fresnel lens, and human body pyroelectric infrared sensor window is aimed at Fresnel lens focal length axle center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200883523U CN202475889U (en) | 2012-03-08 | 2012-03-08 | Automatic human body infrared sensing electric lamp for writing desk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200883523U CN202475889U (en) | 2012-03-08 | 2012-03-08 | Automatic human body infrared sensing electric lamp for writing desk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202475889U true CN202475889U (en) | 2012-10-03 |
Family
ID=46924008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200883523U Expired - Fee Related CN202475889U (en) | 2012-03-08 | 2012-03-08 | Automatic human body infrared sensing electric lamp for writing desk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202475889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857104A (en) * | 2012-11-29 | 2014-06-11 | 深圳市海洋王照明工程有限公司 | Night-lamp circuit |
-
2012
- 2012-03-08 CN CN2012200883523U patent/CN202475889U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857104A (en) * | 2012-11-29 | 2014-06-11 | 深圳市海洋王照明工程有限公司 | Night-lamp circuit |
| CN103857104B (en) * | 2012-11-29 | 2016-04-13 | 深圳市海洋王照明工程有限公司 | Night-light circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20130308 |