CN204859149U - Touch switch - Google Patents

Abstract

The utility model discloses a touch switch, including the casing, the built -in monostable of casing touches module, bistable state touch module, amplifier circuit, display circuit and is the power supply circuit of above -mentioned circuit power supply. Amplifier circuit's signal output part is connected with the signal input part of monostable touch module electricity, and the signal output part of monostable touch module is connected with the signal input part electricity of bistable state touch module, and the signal output part of bistable state touch module is connected with the signal output part electricity of display circuit. The utility model provides a pair of when touch switch is static, the operational amplifier output high level, timer output is the low level. When the touch contact piece, human influence electricity makes the operational amplifier output low level, triggers monostable circuit, exports a trigger impulse, makes the JK trigger the upset and changes the on off state. Need the switch lamp -hour, finger touch switch induction zone, the light is bright, and automatic extinguishing after lasting a period.

Description

A kind of soft-touch control

Technical field

The utility model relates to a kind of switch, in particular a kind of soft-touch control.

Background technology

Lighting switch electronicalization process is from the economize on electricity of public illumination controls, and soft-touch control is undoubtedly the another successful Application that electronics replaces machinery, the emerging product of one of development in science and technology progress.Soft-touch control has taken leave of harsh conditions, the waste of energy of audio-switch, the uneasiness congruence shortcoming of mechanical switch of light-operated switch.Existing soft-touch control does not have hard contact, does not discharge and does not strike sparks, a large amount of saving copper alloy materials, and the requirement simultaneously for mechanical structure greatly reduces, and it directly replaces traditional switch, operate comfortable, feel is splendid, control is accurate and do not have mechanical wear.But present soft-touch control great majority are can not the length of control switch delay time, do not have automatic identification function.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of soft-touch control, and time static, amplifier exports high level, and the output of timer is low level.When touching contact chip, human body sensing electricity makes amplifier LM3900 export as low level, thus triggers 555 monostable circuits, exports a trigger impulse, makes JK trigger upset, changes on off state.When needing switch lamp, finger touch inductive switching district, electric light is lighted automatically, time delay about a minute, electric light automatic distinguishing.

The utility model is achieved through the following technical solutions: a kind of soft-touch control, comprise housing, the built-in monostable touch modules of described housing, bistable state touch modules, amplifying circuit, display circuit and the power circuit of powering for foregoing circuit, the signal output part of amplifying circuit is electrically connected with the signal input part of monostable touch modules, the signal output part of monostable touch modules is electrically connected with the signal input part of bistable state touch modules, and the signal output part of bistable state touch modules is electrically connected with the signal output part of display circuit.

As the further optimization of such scheme, described amplifying circuit comprises operational amplifier LM3900, electric capacity C1, electric capacity C2 and resistance R1, the anti-item input of operational amplifier LM3900 is by resistance R1 ground connection, the same item input of operational amplifier LM3900 is electrically connected with electric capacity C1, and the output of operational amplifier LM3900 is electrically connected with electric capacity C2.

As the further optimization of such scheme, described monostable touch modules comprises 555 timers, electric capacity C3, electric capacity C4 and resistance R3, and the low triggering end of 555 timers is electrically connected with resistance R3.

As the further optimization of such scheme, described monostable touch modules comprises 555 timers, electric capacity C3, electric capacity C4 and resistance R3, and the low triggering end of 555 timers is electrically connected with resistance R3.

As the further optimization of such scheme, described bistable state touch modules comprises JK flip-flop CD4027 and peripheral circuit thereof.

As the further optimization of such scheme, described display circuit comprises light-emitting diode U3, and the output of JK flip-flop CD4027 is electrically connected with light-emitting diode U3 by resistance R4, triode Q1, resistance R5.

As the further optimization of such scheme, electric capacity C1 and electric capacity C2 is the electric capacity of 100uF.

As the further optimization of such scheme: electric capacity C4 is the electric capacity of 10uF, and electric capacity C3 is the electric capacity of 1uF, and the resistance of resistance R3 is 1 megaohm.

As the further optimization of such scheme, the resistance of resistance R4 is 3 kilo-ohms, and the resistance of resistance R5 is 300 Europe.

Compared to existing technology, the beneficial effect of a kind of soft-touch control that the utility model provides is embodied in the utility model:

1, a kind of soft-touch control of providing of the utility model, built-in monostable touch modules, bistable state touch modules, amplifying circuit, display circuit and the power circuit of powering for foregoing circuit.Wherein, amplifying circuit adopts operational amplifier LM3900, and monostable touch modules adopts 555 timers, and bistable state touch modules adopts 4027JK trigger, and display circuit adopts light-emitting diode.When a kind of soft-touch control of the present utility model is static, operational amplifier LM3900 exports high level, and 3 pin of integrated 555 timers export as low level.When touching contact chip, human body sensing electricity makes operational amplifier LM3900 export as low level, thus triggers 555 monostable circuits, exports a trigger impulse, makes JK flip-flop trigger upset, changes on off state.When needing switch lamp, finger touch inductive switching district, electric light is lighted automatically, after continuing for some time, electric light automatic distinguishing.

2, a kind of soft-touch control of providing of the utility model, monostable touch modules adopts 555 timers, the external touch sheet metal of low triggering end, and during triggerless Puled input, the output u of 555 timers is " 0 ", and light-emitting diode does not work.When touching sheet metal with hand, being equivalent to low triggering end and inputting a negative pulse, the internal comparator upset of 555 timers, makes output u.Become high level " 1 ", light-emitting diode is bright.A kind of Intelligent touch switch that the utility model provides, resistance R selects 1M Europe, and electric capacity selects 100uF, and time delay reached more than 1 minute.

Accompanying drawing explanation

Fig. 1 is the circuit structure block diagram of a kind of soft-touch control of the present utility model.

Fig. 2 is the circuit theory diagrams of a kind of soft-touch control of the present utility model.

Embodiment

Below embodiment of the present utility model is elaborated; the present embodiment is implemented under premised on technical solutions of the utility model; give detailed execution mode and concrete operating process, but protection range of the present utility model is not limited to following embodiment.

See Fig. 1, it is a kind of circuit structure block diagram of soft-touch control.A kind of soft-touch control, comprises housing.Wherein, the built-in monostable touch modules of housing, bistable state touch modules, amplifying circuit, display circuit and the power circuit of powering for foregoing circuit, the signal output part of amplifying circuit is electrically connected with the signal input part of monostable touch modules, the signal output part of monostable touch modules is electrically connected with the signal input part of bistable state touch modules, and the signal output part of bistable state touch modules is electrically connected with the signal output part of display circuit.

See the circuit theory diagrams that Fig. 2, Fig. 2 are a kind of soft-touch control of the present utility model.Amplifying circuit comprises operational amplifier LM3900, electric capacity C1, electric capacity C2 and resistance R1, the anti-item input of operational amplifier LM3900 is by resistance R1 ground connection, the same item input of operational amplifier LM3900 is electrically connected with electric capacity C1, and the output of operational amplifier LM3900 is electrically connected with electric capacity C2.Wherein, in this preferred embodiment, electric capacity C1 and electric capacity C2 is the electric capacity of 100uF, and the resistance of resistance R1 is 1 megaohm.Amplifying circuit is that signal people being touched touch pad generation amplifies, and improve operating voltage, bonding steady state trigger normally works,

Monostable touch modules comprises 555 timers, electric capacity C3, electric capacity C4 and resistance R3, and the low triggering end of 555 timers is electrically connected with resistance R3.Wherein, electric capacity C4 is the electric capacity of 10uF, and electric capacity C3 is the electric capacity of 1uF, and the resistance of resistance R3 is 1 megaohm.

In this preferred embodiment, the external touch sheet metal of low triggering end of 555 timers, during triggerless Puled input, the output u of 555 timers.For " 0 ", light-emitting diode does not work.When touching sheet metal with hand, being equivalent to low triggering end and inputting a negative pulse, the internal comparator upset of 555 timers, makes output u.Become high level " 1 ", light-emitting diode is bright, knows that the voltage on electric capacity C is charged to U _c=2V _cCtill/3.Delay time t represents, then available following formula calculates delay time:

$\begin{array}{c}t=RC\ln \frac{v_{\left(\mathrm{\∞}\right)}-v_{\left(0^{+}\right)}}{v_{\left(\mathrm{\∞}\right)}-v_{\left(tw\right)}}=RC\ln \frac{V_{CC}-0}{V_{CC}-\frac{2}{3}{V}_{CC}}\\ =RC\ln 3=1.1RC\end{array}$

In book preferred embodiment, resistance R selects 1M Europe, and electric capacity selects 100uF, and substitute into the known delay time t=1.1RC=110s of above formula, delay time is for more than 1 minute.

Bistable state touch modules comprises JK flip-flop CD4027 and peripheral circuit thereof.Display circuit comprises light-emitting diode U3, and the output of JK flip-flop CD4027 is electrically connected with light-emitting diode U3 by resistance R4, triode Q1, resistance R5.The resistance of resistance R4 is 3 kilo-ohms, and the resistance of resistance R5 is 300 Europe.

A kind of soft-touch control that the utility model provides, built-in monostable touch modules, bistable state touch modules, amplifying circuit, display circuit and the power circuit of powering for foregoing circuit.Wherein, amplifying circuit adopts operational amplifier LM3900, and monostable touch modules adopts 555 timers, and bistable state touch modules adopts 4027JK trigger, and display circuit adopts light-emitting diode.When a kind of soft-touch control of the present utility model is static, operational amplifier LM3900 exports high level, and 3 pin of integrated 555 timers export as low level.When touching contact chip, human body sensing electricity makes operational amplifier LM3900 export as low level, thus triggers 555 monostable circuits, exports a trigger impulse, makes JK flip-flop trigger upset, changes on off state.When needing switch lamp, finger touch inductive switching district, electric light is lighted automatically, after continuing for some time, electric light automatic distinguishing.

To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.

In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.

Claims (8)

1. a soft-touch control, comprise housing, it is characterized in that: the built-in monostable touch modules of described housing, bistable state touch modules, amplifying circuit, display circuit and the power circuit of powering for foregoing circuit, the signal output part of amplifying circuit is electrically connected with the signal input part of monostable touch modules, the signal output part of monostable touch modules is electrically connected with the signal input part of bistable state touch modules, and the signal output part of bistable state touch modules is electrically connected with the signal output part of display circuit.

2. a kind of soft-touch control according to claim 1, it is characterized in that: described amplifying circuit comprises operational amplifier LM3900, electric capacity C1, electric capacity C2 and resistance R1, the anti-item input of operational amplifier LM3900 is by resistance R1 ground connection, the same item input of operational amplifier LM3900 is electrically connected with electric capacity C1, and the output of operational amplifier LM3900 is electrically connected with electric capacity C2.

3. a kind of soft-touch control according to claim 1, is characterized in that: described monostable touch modules comprises 555 timers, electric capacity C3, electric capacity C4 and resistance R3, and the low triggering end of 555 timers is electrically connected with resistance R3.

4. a kind of soft-touch control according to claim 1, is characterized in that: described bistable state touch modules comprises JK flip-flop CD4027 and peripheral circuit thereof.

5. a kind of soft-touch control according to claim 3, is characterized in that: described display circuit comprises light-emitting diode U3, and the output of JK flip-flop CD4027 is electrically connected with light-emitting diode U3 by resistance R4, triode Q1, resistance R5.

6. a kind of soft-touch control according to claim 2, is characterized in that: electric capacity C1 and electric capacity C2 is the electric capacity of 100uF.

7. a kind of soft-touch control according to claim 3, is characterized in that: electric capacity C4 is the electric capacity of 10uF, and electric capacity C3 is the electric capacity of 1uF, and the resistance of resistance R3 is 1 megaohm.

8. a kind of soft-touch control according to claim 5, is characterized in that: the resistance of resistance R4 is 3 kilo-ohms, and the resistance of resistance R5 is 300 Europe.