CN2051803U - Proximate touch adjustable induction switch - Google Patents
Proximate touch adjustable induction switch Download PDFInfo
- Publication number
- CN2051803U CN2051803U CN 88207138 CN88207138U CN2051803U CN 2051803 U CN2051803 U CN 2051803U CN 88207138 CN88207138 CN 88207138 CN 88207138 U CN88207138 U CN 88207138U CN 2051803 U CN2051803 U CN 2051803U
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- CN
- China
- Prior art keywords
- switch
- triode
- unit
- proximate
- induction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Sanitary Device For Flush Toilet (AREA)
Abstract
The utility model relates to a proximate touching adjustable induction switch and belongs to the electric switch field. The proximate touching adjustable induction switch comprises an oscillating unit, an amplifying unit, a wave detection unit, a pulse unit and a switch unit. The proximate touching adjustable induction switch has high induction, strong reliability and adjustable induction distance and overcomes the disadvantages of poor induction and disability of induction distance adjustment of an original switch proximate switch. The proximate touching adjustable induction switch can be used in places such as an automatic device for washing hands, etc.
Description
Belong to the electronic switch field near touching adjustable inductive switch.
There is " switching regulator is near switch " generally to be used for spacing more of lathe at present.The groove (as U-lag) that one solid shape is arranged at spacing position.When inductive rod reaches in the groove, switch starting.Play on-off action.This switch mainly is by the transistor amplification.The distance that it is responded to very short (about general 10mm), the shape that it is responded to is also fixed.Therefore this switching regulator is only effective to metal near switch, and distance of reaction is nonadjustable.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art and provides a kind of near touching adjustable inductive switch.
The purpose of this utility model can reach by following measure: comprise the oscillating unit of being made up of triode T1, capacitor C 1 C2, oscillation transformer B1 (1), the amplifying unit (2) that triode T2 forms, the detection unit (3) that diode D1D2 forms near touching adjustable inductive switch (accompanying drawing one).The pulse unit (4) that triode T3, T4, T5 and pulse transformer B2 form.Form with the switch element (5) that bidirectional triode thyristor T6 forms.
The utility model will be done further carefully to state with embodiment in conjunction with the accompanying drawings.
Accompanying drawing one is the utility model line map.
Accompanying drawing two is the utility model outline drawing.(6) be that the line of induction (7) is an inductor, (8) are tunable capacitor C1.
The utility model is formed oscillating unit (1) by T1, C1, C2, B1 etc.When oscillating voltage is amplified by the T2 base stage that the coupling coil L4 of B1 is added to amplifying unit (2), pass through the half-wave voltage doubler of the D1D2 composition of detection unit (3) then and carry out the T3 that pulse unit (3) are delivered in detection, make T3 be in conducting state.Control T4 ends, thereby makes T5 BT33 can not produce pulse voltage.The T6 bidirectional triode thyristor triggerless voltage of switch element (5) is in cut-off state.When metal object or human body during near inductor, the oscillating unit failure of oscillation, the non-inductive voltage output of T2, T3 is in cut-off state, the T4 conducting makes BT33 produce pulse voltage, through the conducting of pulse transformer B2 control bidirectional triode thyristor, reach the purpose of inductive switch.Adjust capacitor C 1, provide different capacitive reactance couplings to different distance of reaction in the circuit, can make the distance of being responded to, and can be with proximity switch furnishing contact witch, the inductor of this switch can be made into shapes such as sheet, piece, rod, not only effective to metal object, and all effective to human body livestock etc.
Triode T1 T2 T3 all adopts 3DG6 in the utility model, and triode T4 adopts the 3DK9 multiplication factor between 40～80, and transistor T 5 adopts BT33, and the T6 bidirectional triode thyristor is selected for use greater than 2A/400V.
Diode D1 D2 adopts 2CP.
Capacitor C 1 is a tunable capacitor 5/20, and C2 is 3300P.
Oscillation transformer coiling on the skeleton about 18mm.L1 L2 L3 is respectively around 60 circles, and L4 is around 15 circles, with 0.14 enamelled wire coiling.
Pulse transformer coiling on the skeleton about 18mm.L1 is around 250 circles, and L2 is 250 circles.With the coiling of a12 enamelled wire.Guarantee that L1 and L2 insulation is good.
Incoming line (induction pole connecting line) is selected 75 Ω coaxial wires for use.Other does not all have specific (special) requirements.
The utility model has following advantage than prior art:
(1) adopt oscillating unit and amplifying unit to improve induction sensitivity;
(2) because switch element adopts the bidirectional triode thyristor circuits for triggering, improve the reliability of switch, avoided false triggering.
Like this, use the utility model distance of reaction at 20mm-40mm with interior sensitivity.Reliability is all fine.People or metal object (were generally near the 1.5-2 of distance doubly) switch as long as after all normal switch starting people in time of switch or metal leave certain distance in distance range and opened and closed this moment.
(3) so can provide different capacitive reactance couplings to different distance of reaction owing to inserted tunable capacitor C1.Thereby reach the purpose of adjustable distance and even furnishing soft-touch control.
(4) the utility model cost is low, and is non-directional, harmless to health, and inductive switch such as microwave and the photoelectric sensor switch cost height used in the market, and high directivity, microwave inductive switch are harmful to human body.
The utility model can be made the automatic hand washer of proximity, use this switch and add an electromagnetically operated valve and promptly can be made into automatic hand washer, when staff during near the tap that is equipped with inductor the pool side of inductor (or be equipped with) water flow out automatically.Hand one leaving water promptly stops.Water-saving rate reaches 40%.
The utility model also can be used for other field.As public health, medicine equipment, the P.P, warning system is controlled etc. automatically.
Claims (2)
1. the adjustable inductive switch of approaching touch is characterized in that having by triode T
1Capacitor C
1C
2, oscillation transformer B
1The oscillating unit of forming (1) is by triode T
2The amplifying unit of forming (2) is by diode D
1D
2The detection unit of forming (3) is by triode T
3T
4T
5With pulse transformer B
2The pulse unit (4) and the bidirectional triode thyristor T that form
6The switch element of forming (5); Oscillation transformer B
1Primary coil be one group of tapped coil of band, this coil is divided into L by centre tap
1L
2Two parts, wherein L
1Non-public termination capacitor C
2, L
2Non-public termination tunable capacitor C
1, its common port (being centre tap) meets T
1Base stage, oscillation transformer B
1Secondary by two coil L independently
2L
4Form L
2Meet triode T
1Collector electrode, L
4Meet triode T
2Base stage, triode T
2Output signal by diode D
1D
2Deliver to triode T
3T
4T
5, triode T
5Meet a pulse transformer B
2Elementary, its B
2The secondary bidirectional triode thyristor T that connects
6
2. device according to claim 1 is characterized in that the capacitor C in its oscillating unit
1Be adjustable, C
1The appearance value is 5/20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88207138 CN2051803U (en) | 1988-06-18 | 1988-06-18 | Proximate touch adjustable induction switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88207138 CN2051803U (en) | 1988-06-18 | 1988-06-18 | Proximate touch adjustable induction switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2051803U true CN2051803U (en) | 1990-01-24 |
Family
ID=4841203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88207138 Pending CN2051803U (en) | 1988-06-18 | 1988-06-18 | Proximate touch adjustable induction switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2051803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820875A (en) * | 2011-06-09 | 2012-12-12 | 福特全球技术公司 | Proximity switch having sensitivity control and method therefor |
-
1988
- 1988-06-18 CN CN 88207138 patent/CN2051803U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820875A (en) * | 2011-06-09 | 2012-12-12 | 福特全球技术公司 | Proximity switch having sensitivity control and method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |