CN102447460A

CN102447460A - Light switching device with switch-on and switch-off functions in case of getting in and out of washroom

Info

Publication number: CN102447460A
Application number: CN2010105003629A
Authority: CN
Inventors: 张海艇
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-08
Filing date: 2010-10-08
Publication date: 2012-05-09

Abstract

The invention provides a light switching device with switch-on and switch-off functions in case of getting in and out of a washroom. The light switching device consists of an entering detection circuit, an exiting detection circuit, an interlocking circuit and a control circuit, wherein, the entering detection circuit contains an infrared (IR) transmitting-receiving integrated chip LM567, an IR transmitting tube and an IR receiving tube; the entering detection circuit is placed outside a door so that a person is detected at the first time while getting in the washroom, and the exiting detection circuit is placed inside the door so that the person is detected at the first time while getting out of the washroom; and the interlocking circuit has functions as follows: when the person sequentially passes through the entering detection circuit and the exiting detection circuit, only output of the detection circuit through which the person firstly passes is guaranteed to be effective, namely the output of the entering detection circuit through which the person firstly passes is guaranteed to be effective while the person gets in the washroom, and light is on automatically this moment; and the output of the exiting detection circuit through which the person firstly passes is guaranteed to be effective while the person gets out of the washroom, and light is off automatically this moment.

Description

A kind of crossing the threshold left the toilet headlamp switch device of a pass

Affiliated technical field

The present invention relates to a kind of headlamp switch device, specifically relate to a kind of crossing the threshold and leave the toilet headlamp switch device of a pass.

Background technology

Light between domestic hygiene mostly is to lean on people's console switch to control the light on and off of light at present; This exists certain trouble in the use; Especially at night enter the toilet and need feel about in the dark and seek switch and more feel inconvenient, also have a kind of switch in addition, though can open light automatically with acoustic control control; Do not go out and need constantly sound but keep light, the light of obviously controlling the toilet in this way exists certain deficiency.

Summary of the invention

The purpose of this invention is to provide a kind of crossing the threshold and leave the toilet lighting fixture of a pass; The technical solution adopted for the present invention to solve the technical problems is in order to achieve the above object: by the detection circuit of entering; The detection circuit of going out; An interlock circuit, a control circuit is formed a ABC of toilet headlamp switch device of leaving a pass.Contain an infrared in the described detection circuit of entering and accept incorporate chip LM567; An infrared emission tube; An infrared ray adopter; Two are used for anti-interference capacitor, a resistance and another electric capacity that is used to be provided with frequency, and described infrared emission tube is serially connected between transmitting terminal 5 pin and ground wire of chip LM567; Described infrared ray adopter is serially connected between receiving terminal 3 pin and ground wire of chip LM567; Described being used between 1 pin that anti-interference capacitor is connected on chip LM567 respectively, 2 pin, a described resistance that is used to be provided with frequency and another capacitance series are between transmitting terminal 5 pin and ground wire, and the junction of this resistance and electric capacity is connected with 6 pin of chip LM567 simultaneously; The charging constant that changes resistance and electric capacity can change emission and the frequency of accepting circuit; The setting of the detection circuit frequency of originally entering is inequality with the setting of the detection circuit frequency of going out, and can avoid the problem of phase mutual interference like this, and the detection circuit of originally entering simultaneously is placed on the outside, gate; First was detected when the people was entered, thereby chip output 8 pin that make LM567 are exported high level because of the infrared ray adopter receives the infrared ray that reflects back from human body.

The described detection circuit of going out contains an infrared equally and accepts incorporate chip LM567; An infrared emission tube; An infrared ray adopter; Two are used for anti-interference capacitor, a resistance and another electric capacity that is used to be provided with frequency, and described infrared emission tube is serially connected between transmitting terminal 5 pin and ground wire of chip LM567; Described infrared ray adopter is serially connected between receiving terminal 3 pin and ground wire of chip LM567; Described being used between 1 pin that anti-interference capacitor is connected on chip LM567 respectively, 2 pin, a described resistance that is used to be provided with frequency and another capacitance series are between transmitting terminal 5 pin and ground wire, and the junction of this resistance and electric capacity is connected with 6 pin of chip LM567 simultaneously; The charging constant that changes resistance and electric capacity can change emission and the frequency of accepting circuit; The setting of the detection circuit frequency of originally going out is inequality with the setting of the detection circuit frequency of entering, and can avoid the problem of phase mutual interference like this, and the detection circuit of originally going out simultaneously is placed on inboard place, gate; First was detected when the people was gone out, thereby chip output 8 pin that make LM567 are exported high level because of the infrared ray adopter receives the infrared ray that reflects back from human body.

Contain four NAND gates in the described interlock circuit and be that narration is convenient can claim first NAND gate, second NAND gate, the 3rd NAND gate; The 4th NAND gate, two triodes that are used to discharge can be claimed first triode; Second triode, two resistance that are used to discharge and recharge and two electric capacity also contain two current-limiting resistances; Output 8 pin of the LM567 chip in input of described first NAND gate and the detection circuit of entering are connected; And another input is connected on the resistance that is used to discharge and recharge and the junction of electric capacity, be connected with the collector electrode of first triode simultaneously, and resistance that is used to discharge and recharge and capacitance series is between power supply and ground wire; And the emitter of first triode is connected with ground wire; Two inputs of the output of described first NAND gate and second NAND gate are connected, and the S of the d type flip flop in the output of second NAND gate and control circuit end is connected, and also is connected with second transistor base through a current-limiting resistance simultaneously; Output 8 pin of the LM567 chip in input of described the 3rd NAND gate and the detection circuit of going out are connected; And another input is connected on the resistance that is used to discharge and recharge and the junction of electric capacity, be connected with the collector electrode of second triode simultaneously, and resistance that is used to discharge and recharge and capacitance series is between power supply and ground wire; And the emitter of second triode is connected with ground wire; Two inputs of the output of described the 3rd NAND gate and the 4th NAND gate are connected, and the R of the d type flip flop in the output of the 4th NAND gate and control circuit end is connected, and also is connected with first transistor base through a current-limiting resistance simultaneously.The effect of described interlock circuit is: enter detection circuit when going out detection circuit when the people passes by according to this; Only guarantee that detection circuit output of passing by earlier is effective; The detection circuit of passing by earlier when promptly entering of entering guarantees its output effectively; And the detection circuit of going out on the time elder generation road of going out guarantees its output effectively; Its concrete principle is such: the output high level of the LM567 in the detection circuit of when entering makes the first NAND gate output low level, second NAND gate output high level; The high level of this output triggers d type flip flop on the one hand and makes it to light light, makes the second triode conducting make it to have blocked the 3rd NAND gate on the one hand, therefore passes by subsequently when going out detection circuit and triggers d type flip flop because of the 4th NAND gate no-voltage; The d type flip flop lamp that can not overturn can not extinguish yet; And the output high level of the LM567 in the detection circuit of when going out makes the 3rd NAND gate output low level the 4th NAND gate output high level, and the high level of this output triggers d type flip flop on the one hand and makes it blackout, makes the first triode conducting make it to have blocked first NAND gate on the one hand; Therefore pass by subsequently when entering detection circuit because of second NAND gate no-voltage triggering d type flip flop, the d type flip flop lamp that can not overturn can not lighted once more yet.

Contain a d type flip flop in the described control circuit, a bidirectional triode thyristor, a bulb, described bidirectional triode thyristor and bulb string are connected on the power supply of 220V, and the Q of described d type flip flop end is connected with the control utmost point of bidirectional triode thyristor.

The invention has the beneficial effects as follows: light can be lighted automatically when getting into the toilet, walks out toilet light and can extinguish automatically, and this has brought a lot of convenience to people.

Description of drawings

Accompanying drawing is a circuit connection diagram of the present invention

Show the detection circuit 24 of entering in the drawings, the detection circuit 8 of going out, interlock circuit 12, control circuit 35; Infrared emission tube 4,22,

infrared ray adopter

3,23,

electric capacity

5,6,20,21,25,27,29,36; LM567 chip 7,26,

resistance

9,11,18,28,31,34, NAND gate 13,14,32,33; Triode 19,30, d type flip flop 15, the annexation of bulb 16, bidirectional triode thyristor 17; Also show the direction of arrow 1,2 among the figure, promptly arrow 2 representes to enter direction, and arrow 1 representes to go out direction.

Embodiment

To specifically narrate embodiment of the present invention with reference to accompanying drawing: form one and cross the threshold and leave the toilet headlamp switch device of a pass by go out 12, one control circuits of 8, one interlock circuits of detection circuit 35 of 24, one of the detection circuit of entering.Enter and contain an infrared in the detection circuit 24 and accept 22, one infrared ray adopters 23 of 26, one infrared emission tubes of incorporate chip LM567; Two are used for

anti-interference capacitor

25,36; Resistance 28 and another electric capacity 27 that is used to be provided with frequency, infrared emission tube 22 are serially connected between transmitting terminal 5 pin and ground wire of chip LM567 26, and infrared ray adopter 23 is serially connected between receiving terminal 3 pin and ground wire of chip LM567 26;

Electric capacity

36,25 is connected on respectively between 1 pin, 2 pin of chip LM56726; Resistance 28 and electric capacity 27 are serially connected between transmitting terminal 5 pin and the ground wire, and the junction of resistance 28 and electric capacity 27 is connected with 6 pin of chip LM567 26 simultaneously, and the detection circuit 8 of going out contains an infrared equally and accepts incorporate chip LM567 7; An infrared emission tube 4; 3, two of an infrared ray adopter is used for resistance 9 and electric capacity 21 that 5,6, one of anti-interference capacitors are used to be provided with frequency; Infrared emission tube is serially connected between transmitting terminal 5 pin and ground wire of chip LM567 7; Infrared ray adopter 3 is serially connected between receiving terminal 3 pin and ground wire of chip LM567 26, and electric capacity 5,6 is connected on respectively between 1 pin, 2 pin of chip LM567 7, and the resistance 9 and the electric capacity 21 that are used to be provided with frequency are serially connected between transmitting terminal 5 pin and the ground wire; The junction of resistance 9 and electric capacity 21 is connected with 6 pin of chip LM5677 simultaneously

Contain 11,34 and two

electric capacity

20,29 of 19,30, two resistance that are used to discharge and recharge of 13,14,32,33, two triodes that are used to discharge of four NAND gates in the interlock circuit 12; Also contain two current-limiting

resistances

18,31, output 8 pin of the LM567 chip 26 in input of NAND gate 33 and the detection circuit 24 of entering are connected, and another input is connected on the junction of resistance 34 and electric capacity 29; Be connected with the collector electrode of triode 30 simultaneously; And resistance 34 and electric capacity 29 are serially connected between power supply and the ground wire, and the emitter of triode 30 is connected with ground wire, and two inputs of the output of NAND gate 33 and NAND gate 32 are connected; And the S of the d type flip flop 15 in the output of NAND gate 32 and the control circuit 35 end is connected; Also be connected through the base stage of resistance 18 and triode 19 simultaneously, output 8 pin of the LM567 chip 7 in input of NAND gate 13 and the detection circuit 8 of going out are connected, and another input is connected on the junction of resistance 11 and electric capacity 20; Be connected with the collector electrode of triode 19 simultaneously; Resistance 11 and electric capacity 20 are serially connected between power supply and the ground wire, and the emitter of triode 19 is connected with ground wire, and two inputs of the output of NAND gate 13 and NAND gate 14 are connected; And the R of the d type flip flop 15 in the output of NAND gate 14 and the control circuit 35 end is connected, also passes through current-limiting resistance 31 simultaneously and is connected with triode 30.The effect of described interlock circuit 12 is: enter detection circuit 24 when going out detection circuit 8 when the people passes by according to this; Only guarantee that detection circuit output of passing by earlier is effective; The detection circuit of passing by earlier when promptly entering 24 of entering guarantees its output effectively, and the detection circuit 8 on elder generation road guarantees its output effectively when going out.

Contain 17, one bulbs 16 of 15, one bidirectional triode thyristors of a d type flip flop in the control circuit 35, bidirectional triode thyristor 17 is serially connected on the power supply of 220V with bulb 16, and the Q of d type flip flop 15 end is connected with the control utmost point of bidirectional triode thyristor 17.

Claims

1. a ABC of toilet headlamp switch device of leaving a pass is by the detection circuit of entering (24); The detection circuit of going out (8), an interlock circuit (12), a control circuit (35) is formed; It is characterized in that: four NAND gates (13), (14), (32), (33) are contained in (12) in the interlock circuit; Two triodes that are used to discharge (19), (30), two current-limiting resistances (18), (31) are also contained in two resistance that are used to discharge and recharge (11), (34) and two electric capacity (20), (29).

2. output 8 pin according to the LM567 chip 26 in input of the NAND gate (33) in claims 1 described interlock circuit (12) and the detection circuit of entering (24) are connected; And another input is connected on the junction of resistance (34) and electric capacity (29); Be connected with the collector electrode of triode (30) simultaneously; And resistance (34) and electric capacity (29) are serially connected between power supply and the ground wire, and the emitter of triode (30) is connected with ground wire, and two inputs of the output of NAND gate (33) and NAND gate (32) are connected; And the S of the d type flip flop (15) in the output of NAND gate (32) and the control circuit 35 end is connected; The base stage of also passing through resistance (18) and triode (19) simultaneously is connected, and output 8 pin of the LM567 chip (7) in input of NAND gate (13) and the detection circuit of going out (8) are connected, and another input is connected on the junction of resistance (11) and electric capacity (20); Be connected with the collector electrode of triode (19) simultaneously; Resistance (11) and electric capacity (20) are serially connected between power supply and the ground wire, and the emitter of triode (19) is connected with ground wire, and two inputs of the output of NAND gate (13) and NAND gate (14) are connected; And the R of the d type flip flop (15) in the output of NAND gate (14) and the control circuit (35) end is connected, and also passes through current-limiting resistance (31) simultaneously and is connected with triode (30).

3. the effect according to claims 1 or 2 described interlock circuits (12) is: when the people passes by detection circuit of entering (24) and the detection circuit of going out (8) according to this; Only guarantee that detection circuit output of passing by earlier is effective; The detection circuit of passing by earlier when promptly entering of entering (24) guarantees its output effectively, and the detection circuit (8) on elder generation road guarantees its output effectively when going out.