CN201813359U

CN201813359U - Non-contact switch

Info

Publication number: CN201813359U
Application number: CN2010202551434U
Authority: CN
Inventors: 黎明; 陈永毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-01
Filing date: 2010-07-01
Publication date: 2011-04-27
Anticipated expiration: 2020-07-01

Abstract

The utility model discloses a non-contact switch, which comprises a mounting support, a pair of induction chips, a range control window and an adjusting device. The induction chips are arranged adjacently, form an included angle and are respectively fixed into the mounting support by the aid of elastic support sheets, an adjusting screw and a pressure plate, the range control window is positioned in the fronts of the induction chips and mounted on the mounting support, signals of the induction chips control and drive action of an output relay, and the adjusting device is capable of adjusting inclinations of the induction chips and consists of the adjusting screw and the pressure plate capable of being simultaneously abutted to inner edge plates of the induction chips. The non-contact switch can avoid faulty action due to interference, and can realize accurate positioning induction.

Description

A kind of non-contact switch

Technical field

The utility model relates to a kind of non-contact switch.

Background technology

Non-contact switch has purposes quite widely.Almost every profession and trade all has application, and has nothing in common with each other because of the difference of its purposes and field condition.On trigger theory, there are active infrared, passive infrared, laser, ultrasonic wave, Doppler radar, magnetic, sound, light even electromagnetic wave can become non-contact sensor, and drive various performers and finish corresponding action.

Because the carrier of above-mentioned various induction modes all can be propagated in air, so the sphere of action of limiting sensor becomes a problem.In the existing security protection purposes, adopt Infrared to constitute net usually and define protective range; And the occasion of transducers such as use ultrasonic wave, passive infrared and radar; usually can use parts such as camera lens or limited window to form one as conical, square taper or effectively detecting area such as fan-shaped; though this form can be avoided the interference of transducer search coverage side, the EFFECTIVE RANGE in the transducer front is difficult to accurate control.Though utilize the mode that reduces transducer sensitivity can play rough control action in some occasion, this mode can not satisfy the reliability that bigger valid interval is regulated and control, also will be reduced system.

Demand in spatial limitation transducer sphere of action in the application exists.Especially when transducers such as use Doppler radar, ultrasonic wave and passive infrared, if the mode at original camera lens or radome solves on the basis of transducer lateral boundaries, can effectively solve the problem of positive effect distance, then not only can avoid interference the misoperation that is caused, and can make such transducer be used for pinpointly becoming possibility near switch.

Summary of the invention

The purpose of this utility model provides a kind of non-contact switch, and it can be set in sphere of action within the controlled distance, thereby avoids disturbing outside the scope misoperation that is caused, and can realize accurately location induction.

For achieving the above object, the utility model is taked following design:

One mounting bracket; A pair of adjacent setting and have the induction chip of angle mutually is fixed in the mounting bracket by resiliency supported sheet, adjustment screw and pressing plate respectively; One scope is controlled window, is positioned at the place ahead of induction chip, is installed on the mounting bracket; The signal of a pair of induction chip is the action of controlling and driving output relay after comparison circuit is handled.

Also be provided with the adjusting device at a scalable induction chip inclination angle, constitute by an adjustment screw and a pressing plate that can compress side plate in a pair of induction chip simultaneously.

Described induction chip can adopt a kind of in Doppler radar, ultrasonic wave or the passive infrared induction chip, and two induction chips in non-contact switch are identical.

Two induction chips that the utility model non-contact switch adopts are installed with certain corresponding angle, and induction region is separately partially overlapped.When testee is in arbitrary induction chip independently in the search coverage time, though this induction chip has signal, comparison circuit does not drive output relay; Have only testee to be in when overlapping induction region, two induction chips send signal simultaneously, just drive the output relay action after comparison circuit is handled.And mechanic adjustment unit can be adjusted two relative angles between the induction chip, thereby changes the scope of induction region.

The utility model has the advantages that: setting can be adjusted in the zone to induction, has avoided extra-regional interference, and can realize accurately location induction.

Description of drawings

Fig. 1 is that the parts of this non-contact switch constitute schematic diagram.

Fig. 2 is that the distance of this non-contact switch is adjusted schematic diagram.

Circuit theory diagrams when Fig. 3 is used for mains switch for this non-contact switch.

Below in conjunction with drawings and the specific embodiments the utility model is described in further details:

Embodiment

As shown in Figure 1, for adopting the conventional embodiment structural representation of Passive Infrared Sensor as induction chip.Include a pair of induction chip 1 and 1 ', scope control window 2, pressing plate 3, adjustment screw 4, resiliency supported sheet 5 and 5 ', mounting bracket 6, shell 7, comparison circuit 8, output relay 9 and panel 10.

Scope control window 2 is the Pfennig that eyeglass of a customization when using Passive Infrared Sensor; When using Doppler radar, be a nonmetal netted protective cover; When using ultrasonic sensor, be a saturating empty window.

Referring to shown in Figure 2, the innovative point of the utility model non-contact switch is: two induction chips 1 and 1 ' see through scope control window 2 its search coverage S and S ' separately and partially overlap owing to have the angle of setting.

These two induction chips 1 and 1 ' are symmetrical arranged, adjust synchronously and will help keeping it to survey overlapping the dead ahead that the zone remains at this non-contact switch, also can separate asymmetric arrangement and independent the adjustment as the installation environment restriction or when requiring detection range far away.

In order to realize accurate distance control, the utility model has designed the adjusting device at scalable induction chip inclination angle, the pressing plate 3 that can be compressed side plate in a pair of induction chip 1 and 1 ' by an adjustment screw 4 and simultaneously constitutes, and each induction chip is fixedly mounted on the back plate of support by a resiliency supported

sheet

5 and 5 '.Drive pressing plate by adjustment screw, can realize that under the pressure of spring the relative angle of two groups of induction chip transducers is regulated, the coincidence induction region is changed, thereby change detection range, resiliency supported sheet 5,5 ' has equal elastic force and geomery.

As shown in Figure 2, press A when rotating when adjusting screw 4, pressing plate 3 along B to moving, resiliency supported sheet 5,5 ' and the restriction of mounting bracket 6 under, two sensors along C to rotation, cause the coincidence detection scope along D to variation.Vice versa.

Can two induction chips 1 and 1 ' be fixed by set angle at the appointed area, and no longer change angle.

As shown in Figure 2, induction chip 1 and 1 ' has the detection range of the search coverage S of a taper and S ' and each chip respectively much larger than command range.

As shown in Figure 3, two induction chip S, S ' connect and a door A afterwards, so the non-inductive signal of induction chip or when having only signal is arranged no matter all keeps low level with door; Have only when two induction chips send induced signal simultaneously, just export high level with door A.And the effect that adds the T trigger between door A and the power amplifier Q is: actual induction carries out a level upset each time, i.e. induction for the first time realizes that relay adhesive, induction for the second time realize that relay turn-offs, adhesive more for the third time ... this non-contact switch is applied near switch or when using the time-delay mode to turn-off, should shield the T trigger, and by directly driving the power amplifier switch pipe with door.The former reason existing techniques in realizing of correspondent control circuits is not given unnecessary details herein.

The main effect of output relay 9 is the isolation that realize load and control circuit.

By the following examples operation principle is described further.

An embodiment of the present utility model is the household light fixtures switch.Adopt above-mentioned Passive Infrared Sensor, structure is identical with Fig. 1.Panel 10 wherein adopts the ordinary tap panel, and perforate embedding scope control window 2 placed in the middle is a Pfennig that eyeglass herein.Embedded box 7 is routine building standard 86 boxes, increases among the sealing gasket figure between panel and the embedded box and does not draw, and the panel that is exposed to outside the metope can be cleaned with wet cloth.The angle of regulating two induction chips 1 and 1 ' is limited in 12 centimeters detection range.The optional function that utilizes comparison circuit 8 to provide makes for the first time that actual induction is turned on light, induction is for the second time turned off the light.The switch panel that possesses the alternative routine of non-contact switch of this function is applied to the high occasion of hygienic requirements.

Claims

1. a non-contact switch is characterized in that: include

One mounting bracket (6);

A pair of adjacent setting and have induction chip (1), (1 ') of angle mutually, resiliency supported sheet (5), (5 ') and pressing plate (3) and the adjustment screw (4) by correspondence is fixed in the mounting bracket (6) respectively;

One scope control window (2) is installed in the place ahead that mounting bracket (6) is gone up induction chip (1), (1 ');

The signal of telecommunication that induction chip (1), (1 ') export is handled rear drive output relay (9) action through comparison circuit (8).

2. non-contact switch according to claim 1, it is characterized in that: also be provided with an adjusting device that can change induction chip (1), (1 ') relative angle, form by an adjustment screw (4) and the pressing plate (3) that can compress a pair of induction chip (1), (1 ') inner edge simultaneously.

3. non-contact switch according to claim 1 is characterized in that: described induction chip (1), (1 ') are respectively a kind of in Doppler radar, ultrasonic wave and the passive infrared induction chip.

4. non-contact switch according to claim 3 is characterized in that: described induction chip (1), (1 ') are with a kind of induction chip.

5. non-contact switch according to claim 1 and 2 is characterized in that: described adjacent setting and the induction chip (1), (1 ') that have angle mutually are symmetrical arranged, and resiliency supported sheet (5), (5 ') have equal elastic force and geomery.