CN103064315A

CN103064315A - Switch circuit capable of removing mechanical shaking

Info

Publication number: CN103064315A
Application number: CN2012105551745A
Authority: CN
Inventors: 唐榕珠
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-19
Filing date: 2012-12-19
Publication date: 2013-04-24

Abstract

The invention discloses a switch circuit capable of removing mechanical shaking. The switch circuit capable of removing mechanical shaking comprises a basic RS trigger. A single pole double throw switch K is arranged between the R end of the basic RS trigger and the S end of the basic RS trigger in series, the contact points of the single pole double throw switch K and the R end and S end are respectively A and B. Two ends of the contact points A and B are respectively supplied power by 5V power supplies, a public end of the single pole double throw switch K is connected with ground. 1K ohm resistors are respectively in series connection between the single pole double throw switch K and two power supplies. The power supplies are constant direct current power supplies. The switch circuit capable of removing mechanical shaking is simple in structure, convenient to install, small in size, low in price, high in ant-jamming capability, sensitive in reaction, capable of removing shaking when a mechanical switch is connected, reliable in protection, can reduce blind parking and maintenance to avoid losses caused by accidents, meanwhile, can lighten psychological burden of workers and reduce workload of workers, and thereby improving economic returns.

Description

A kind of on-off circuit of eliminating mechanical shaking

Technical field

The present invention relates to a kind of switching technique field, be specifically related to a kind of on-off circuit of eliminating mechanical shaking.

Background technology

At present according to producing actual needs, enterprise can adopt modern detection and diagnosis technology widely, development is take the Predictive Maintenance system of status monitoring as the basis, and it is necessary researching and developing out cover simple possible, an on-line condition monitoring instrument economical and practical, that be easy to promote.

Switch is exactly the crucial tie that can on-line condition monitoring move, and for example mechanical toggle switch is common a kind of, has the characteristics such as simple in structure, easy for installation, that volume is little, price is low, reflection is sensitive.But mechanical toggle switch because vibration can make voltage or current waveform produce " burr ", in electronic circuit, does not generally allow this phenomenon to occur when connecting because this undesired signal can cause circuit shake and so that miswork.

Summary of the invention

The technical problem to be solved in the present invention provides the on-off circuit of eliminating mechanical shaking when a kind of circuit is connected, improves the accuracy of enterprise's on-line monitoring and circuit diagnostics, alleviates workman's psychological burden and workload, thereby increases economic efficiency.

For addressing the above problem, the technical solution used in the present invention is:

A kind of on-off circuit of eliminating mechanical shaking comprises basic rest-set flip-flop, Series Sheet double-pole double throw switch K between described basic rest-set flip-flop R, S two contacts, and the contact of single-pole double-throw switch (SPDT) K and R, S end is respectively A and B.

Further, the two ends of described single-pole double-throw switch (SPDT) K contact A and B are respectively by the Power supply of 5V, the common end grounding of single-pole double-throw switch (SPDT) K.

Further, connect respectively between described single-pole double-throw switch (SPDT) K and the two power supplies resistance of 1K ohm.

Single-pole double-throw switch (SPDT) K power supply is constant direct supply.

The present invention is a kind of to eliminate that the on-off circuit of mechanical shaking is simple in structure, easy for installation, volume is little, price is low, antijamming capability is strong, reflection is sensitive; shake when eliminating the mechanical switch connection; protection is reliable; can reduce and blindly stop and maintenance; improve the accuracy of enterprise's on-line monitoring and circuit diagnostics; simultaneously also alleviated workman's psychological burden and workload, thereby increased economic efficiency.

Description of drawings

Fig. 1 a is the connection figure of mechanical switch.

Fig. 1 b is the figure that affects of voltage waveform.

Fig. 2 a is for eliminating mechanical shaking on-off circuit figure.

Fig. 2 b is voltage oscillogram.

Embodiment

Accompanying drawing discloses concrete structure of the present invention without limitation, and the invention will be further described below in conjunction with accompanying drawing.

Shown in Fig. 2 a, 2b, a kind of on-off circuit of eliminating mechanical shaking, comprise basic rest-set flip-flop, Series Sheet double-pole double throw switch K between described basic rest-set flip-flop R, S two contacts, the contact of single-pole double-throw switch (SPDT) K and R, S end is respectively A and B, the two ends of described single-pole double-throw switch (SPDT) K contact A and B are respectively by the Power supply of 5V, the common end grounding of single-pole double-throw switch (SPDT) K.Connect respectively between described single-pole double-throw switch (SPDT) K and the two power supplies resistance of 1K ohm, single-pole double-throw switch (SPDT) K power supply is constant direct supply.Utilize the memory effect of basic rest-set flip-flop can eliminate the impact of above-mentioned switch generation of vibration, the connected mode of switch and trigger such as Fig. 2 a, single-pole double-throw switch (SPDT) was communicated with the B point originally, at this moment the state of trigger is 0, when switch is dialled upper A by B, one of short duration floating empty time was wherein arranged, at this moment the R of trigger, S is 1, Q still is 0, when the single-pole double-throw switch (SPDT) intermediate contact contacted with A, the current potential that A is ordered was owing to vibration produces " burr ", still, at first be that the B point has been high level, in a single day the A point low level occurs, the state turnover of trigger is 1, even high level appears in A point again, can not change the state of trigger, " burr " phenomenon can not appear in the voltage waveform of Q end shown in Fig. 2 b yet again.

Claims

1. an on-off circuit of eliminating mechanical shaking comprises basic rest-set flip-flop, it is characterized in that: Series Sheet double-pole double throw switch K between the R of described basic rest-set flip-flop, the S end, the contact of described single-pole double-throw switch (SPDT) K and R, S end is respectively A and B.

2. a kind of on-off circuit of eliminating mechanical shaking according to claim 1 is characterized in that: the two ends of described contact A and B are respectively by the Power supply of 5V, the common end grounding of single-pole double-throw switch (SPDT) K.

3. a kind of elimination mechanical shaking on-off circuit according to claim 2 is characterized in that: the resistance of the 1K ohm of connecting respectively between described single-pole double-throw switch (SPDT) K and two power supplys.

4. according to claim 2 or 3 described a kind of elimination mechanical shaking on-off circuits, it is characterized in that: described power supply is constant direct supply.