CN2766456Y

CN2766456Y - Infrared induction type automatic switch reading lamp

Info

Publication number: CN2766456Y
Application number: CN 200420054755
Authority: CN
Inventors: 刘翔; 田原
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-28
Filing date: 2004-12-28
Publication date: 2006-03-22
Anticipated expiration: 2014-12-28

Abstract

The utility model discloses an infrared induction type automatic switch reading lamp capable of being switched on or off automatically, which comprises a light emitting part and a control circuit connected with thereof. The utility model is characterized in that the control circuit is mainly composed of an infrared-emitting diode S1, an infrared-receiving triode S2, a transistor Q1, a relay BT1 and resistors R1, R2, R3, R4, wherein the positive electrode of the infrared-emitting diode S1 is connected with a low-voltage power supply VC through the resistor R1; the negative electrode of the infrared-emitting diode S1 is grounded; the collecting electrode of the infrared-receiving triode S2 is connected with the low-voltage power supply VC through the resistor R2 and the emitting electrode is grounded; the collecting electrode of the transistor Q1 is connected with the low-voltage power supply VC through the resistor R4 and the base electrode is connected with the collecting electrode of the infrared-receiving triode S2; the emitting electrode of the transistor Q1 is grounded; a coil of the relay BT1 is connected with the collecting electrode of the transistor Q1 and the normally open contact of the relay BT1 is connected with the power supply loop of a light-emitting component. The utility model has the advantages that the lamp is lightened when persons come; the lamp is turned off when the persons go; the energy is saved; the use is convenient.

Description

Infrared-sensing type automatic switch desk lamp

Technical field

The utility model relates to a kind of desk lamp, especially a kind of inductive desk lamp that does not have mechanical switch, specifically a kind of infrared-sensing type automatic switch desk lamp.

Background technology

At present, the employed desk lamp of people all has mechanical switch in the daily life, and have only by the manual manual operation switch and could open or cut off the electricity supply, though the desk lamp that has has timer, but realize regularly outage, but its complex structure, operation is also inconvenient.Consider that from energy-conservation and convenient aspect the desk lamp that people wish a kind of energy automatic switch is arranged is for using, in the time of before the people comes desk lamp, desk lamp can be lighted automatically, and the people can close after leaving desk lamp automatically, and according to the knowledge of the applicant, still not having similar products in the market can be for selecting for use.

Summary of the invention

The purpose of this utility model is the infrared-sensing type automatic switch desk lamp of a kind of energy of design automatic shutter, when entering the desk lamp position, the people can open desk lamp so that realize automatically, when the people leaves desk lamp, can cut off the power supply automatically again, thus realize energy-conservation, the convenient purpose of using.

The technical solution of the utility model is:

A kind of infrared-sensing type automatic switch desk lamp, comprise luminous component and coupled control circuit, it is characterized in that described control circuit mainly is made up of infrared-emitting diode S1, infrared reception triode S2, transistor Q1, relay BT1, resistance R 1, R2, R3, R4, the positive pole of infrared-emitting diode S1 meets low-tension supply V by resistance R 1 _C, the minus earth of infrared-emitting diode S1, the collector electrode of infrared reception triode S2 meets low-tension supply V by resistance R 2 _C, its grounded emitter, the collector electrode of transistor Q1 meets low-tension supply V by resistance R 4 _C, its base stage links to each other with the collector electrode of infrared reception triode S2 by resistance R 3, the grounded emitter of transistor Q1, and the coil of relay BT1 connects the collector electrode of transistor Q1, the electric power loop of its normally opened contact J sending and receiving light parts.

Wherein, resistance R 1 or be fixed resistance, or be adjustable resistance.

The beneficial effects of the utility model:

The utlity model has simple in structure, highly sensitive, stable performance, safe and reliable, energy-saving advantages, it is a kind of non-contact type automatic control type desk lamp, be a kind of upgrading products of desk lamp, which often forgets that the people who turns off the light is a kind of very good product, has vast market prospect for.

Description of drawings

Fig. 1 is an electrical schematic diagram of the present utility model.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

As shown in Figure 1.A kind of infrared-sensing type automatic switch desk lamp, comprise luminous component and coupled control circuit, control circuit mainly is made up of infrared-emitting diode S1, infrared reception triode S2, transistor Q1 (model can be S8050), relay BT1, resistance R 1, R2, R3, R4, resistance R 1 or be fixed resistance wherein, or be adjustable resistance, what present embodiment adopted is adjustable resistance (also can be potentiometer).The positive pole of infrared-emitting diode S1 meets low-tension supply V by resistance R 1 _C, the minus earth of infrared-emitting diode S1, the collector electrode of infrared reception triode S2 meets low-tension supply V by resistance R 2 _C, its grounded emitter, the collector electrode of transistor Q1 meets low-tension supply V by resistance R 4 _C, its base stage links to each other with the collector electrode of infrared reception triode S2 by resistance R 3, the grounded emitter of transistor Q1, and the coil of relay BT1 connects the collector electrode of transistor Q1, the electric power loop of its normally opened contact J sending and receiving light parts.The described luminous component of present embodiment is desk lamp main body commonly used, and it generally is made up of bulb and support.

The course of work of the present utility model is:

The utility model judges by infrared transmission diode S1 and infrared reception triode S2 whether the people is arranged under the lamp, the break-make of coming control relay BT1 in view of the above, thus realization is to the automatic control of desk lamp.Control circuit can be formed by detecting and drive two parts again, wherein the test section is mainly by infrared-emitting diode S1, infrared reception triode S2, and current-limiting resistance R1, R2 forms. and the infrared detection principle is as follows: it is to utilize shading or the reflection of object to be detected to infrared beam, inspected object has or not by the synchronization loop gating, as shown in Figure 1, infrared and receiving tube all are placed on the same side, so just can receive the triode conducting and whether judge whether the someone exists under the lamp, and convert thereof into the switching value signal of telecommunication by infrared ray; Drive part is by transistor Q1 and current-limiting resistance R3, and R4 forms.This part mainly realizes thereby the control of relay BT1 break-make is realized automatic control to the desk lamp light on and off, because the required current drives of coil of relay BT1 is bigger, so the switching value signal of test section further need be amplified by transistor (model can be S8050).

The course of work is: at first the size of the current-limiting resistance R1 by regulating infrared-emitting diode S1 is controlled the distance of infrared induction distance.The electrifying startup control circuit (is low-tension supply V then _CEnergising), if no one under the lamp, then the infrared ray that sent of infrared-emitting diode S1 can not reflex to infrared ray and receives on the triode S2, transistor Q1 ends like this, because the collector electrode of S2 is connected to resistance R 2, so the switching value signal of telecommunication of time output is a high level, as can be seen from Figure 1, Q1 has and drives the negative function of holding concurrently.So transistor Q1 is output as low level, the not conducting of coil of relay BT1, the contact of relay BT1 keeps normally open, and lamp does not work.If the people is arranged under lamp, then the infrared ray of S1 emission reflexes on the infrared ray reception triode S2 by human body, S2 conducting this moment, and then the collector electrode of S2 is output as low level, anti-phase by the driving of Q1 then, make that the output of Q1 is a high level, the coil conducting of relay BT1, the closing of contact of relay BT1, lamp is bright, thus, can realize the automatic controlled function of " people Lai Dengliang turns off the light when you leave ".

Claims

1, a kind of infrared-sensing type automatic switch desk lamp, comprise luminous component and coupled control circuit, it is characterized in that described control circuit mainly is made up of infrared-emitting diode S1, infrared reception triode S2, transistor Q1, relay BT1, resistance R 1, R2, R3, R4, the positive pole of infrared-emitting diode S1 meets low-tension supply V by resistance R 1 _C, the minus earth of infrared-emitting diode S1, the collector electrode of infrared reception triode S2 meets low-tension supply V by resistance R 2 _C, its grounded emitter, the collector electrode of transistor Q1 meets low-tension supply V by resistance R 4 _C, its base stage links to each other with the collector electrode of infrared reception triode S2 by resistance R 3, the grounded emitter of transistor Q1, and the coil of relay BT1 connects the collector electrode of transistor Q1, the electric power loop of its normally opened contact J sending and receiving light parts.

2,, it is characterized in that resistance R 1 or be fixed resistance, or be adjustable resistance according to the described infrared-sensing type automatic switch of claim 1 desk lamp.