CN205681394U - A kind of single live wire soft-touch control - Google Patents

Abstract

A kind of single live wire soft-touch control, including single live wire unit, holding unit, anti-interference unit and touch unit, the break-make being controlled controllable AC switching circuit by capacitance type touch key realizes switching function.Disturbing pulse more than Hz noise and power frequency can be filtered by described single live wire soft-touch control effectively, width is i.e. allowed to pass through more than the normal touch operating impulse signal of setting, the positive burst pulse during broad pulse and the negative burst pulse during positive broad pulse are born in automatic fitration, particularly quick-recovery filter capacity can filter the positive burst pulse of continuous print or negative narrow pulse interference signal soon；The positive burst pulse filtered and negative burst pulse Breadth Maximum is needed to be adjusted by change charge constant and discharge time constant respectively.Described single live wire soft-touch control can be as the substitute products of regular tap.

Description

A kind of single live wire soft-touch control

Technical field

The present invention relates to the control switch of a kind of electric equipment, especially a kind of single live wire soft-touch control.

Background technology

Using MCU to be controlled single live wire soft-touch control in the market, its MCU is easily subject to various interference effect, opens There is uncontrolled misoperation in Guan Yi.Use the triggering IC module of trigger-type output, particularly capacitance touch IC, resisting of itself Interference performance is low, and switch is same uncontrolled misoperation easily occurs.

Summary of the invention

In order to solve that existing single live wire soft-touch control exists, misoperation problem easily occurs, the invention provides a kind of single Live wire soft-touch control, including single live wire unit, holding unit, anti-interference unit and touch unit.

Described single live wire unit includes single live wire power getting module and single live wire break-make control module, is provided with single live wire input End, 3 single fire wire output end, 3 single live wire break-make control signal inputs and DC supply outfan.

Described holding unit is provided with 3 single live wire break-make control signal outfans and 3 control pulse input ends；Described 3 single live wire break-make control signal outfans are connected to 3 single live wire break-make control signal inputs.

Described anti-interference unit is provided with 3 and controls pulse output end and 3 touch pulse input ends；Described 3 control arteries and veins Rush outfan and be connected to 3 control pulse input ends.

Described touch unit is provided with 3 and touches pulse output end, and described 3 touch pulse output ends are connected to 3 and touch Touch pulse input end.

Described single live wire break-make control module is made up of 3 bidirectional thyristor on-off circuits；Described 3 bidirectional thyristors are opened Close circuit to be controlled by 3 single live wire break-make control signals of 3 single live wire break-make control signal input inputs respectively.

Described single live wire power getting module is to single live wire break-make control module and touch unit, holding unit, anti-interference unit DC supply is provided；The ground end of described DC supply is single live wire break-make control module and touch unit, holding Unit, anti-interference unit are publicly.

Described touch unit uses capacitance type touch key, exports 3 and touches pulse.

Described anti-interference unit includes 3 anti-jamming circuits；Described anti-jamming circuit includes quick discharging circuit, quick charge electricity Road, electric capacity, Schmidt circuit；One end of described quick discharging circuit is connected to touch pulse ends, and other end is connected to Shi Mi Special circuit input end；One end of described quick-charging circuit is connected to touch pulse ends, and other end is connected to Schmidt circuit Input；One end of described electric capacity is connected to Schmidt circuit input, and other end is connected to publicly or direct current work Make power supply；The outfan of described Schmidt circuit is for controlling pulse ends.

Described quick discharging circuit includes repid discharge diode, charging resistor, repid discharge switch；Described repid discharge After diode is in parallel with charging resistor, negative electrode is connected to one end of repid discharge switch, and anode is the output of quick discharging circuit End；The input that other end is quick discharging circuit of described repid discharge switch.

Described quick-charging circuit includes quick charge diode, discharge resistance, fast charge switch；Described quick charge After diode is in parallel with discharge resistance, anode is connected to one end of fast charge switch, and negative electrode is the output of quick-charging circuit End；The other end of described fast charge switch is the input of quick-charging circuit.

Described repid discharge switch and fast charge switch are the bilateral analog switch of Automatic level control.Described Schmidt electricity Road is homophase Schmidt circuit.The control end of described repid discharge switch is connected to the anti-phase of the control pulse of place anti-jamming circuit Outfan；The end that controls of described fast charge switch is connected to the control pulse ends of place anti-jamming circuit.

The invention has the beneficial effects as follows: described single live wire soft-touch control allows the width normal touch operation more than setting Pulse signal passes through, and the positive burst pulse during broad pulse and the negative burst pulse during positive broad pulse are born in automatic fitration, particularly can Enough fast quick-recovery filter capacities filter the positive burst pulse of continuous print or negative narrow pulse interference signal；Need filter positive burst pulse and Negative burst pulse Breadth Maximum can be adjusted by change charge constant and discharge time constant respectively；Can substitute general Open up pass.

Accompanying drawing explanation

Fig. 1 is single live wire soft-touch control example structure figure；

Fig. 2 is single live wire unit embodiment circuit；

Fig. 3 is touch unit embodiment 1 circuit；

Fig. 4 is touch unit embodiment 2 circuit；

Fig. 5 is anti-jamming circuit embodiment 1；

Fig. 6 is the touch pulse of anti-jamming circuit embodiment 1 and controls impulse waveform；

Fig. 7 is anti-jamming circuit embodiment 2；

Fig. 8 is anti-jamming circuit embodiment 3；

Fig. 9 is the touch pulse of anti-jamming circuit embodiment 3 and controls impulse waveform；

Figure 10 is anti-jamming circuit embodiment 4.

Detailed description of the invention

Below in conjunction with accompanying drawing, the invention will be further described.

It is illustrated in figure 1 single live wire soft-touch control example structure figure, including single live wire unit 10, holding unit 20, resists Disturb unit 30 and touch unit 40.

N touch pulse P1-Pn of touch unit output is sent to anti-interference unit, and anti-interference unit touches pulse to n and divides After not carrying out anti-interference process, n control pulse M1-Mn of output is sent to holding unit, and holding unit controls arteries and veins to n Punching carries out triggering and after state holding process respectively, and single live wire break-make control signal G1-Gn of n of output is sent to single live wire Unit.N is the number of switches of single live wire soft-touch control, and the most described single live wire soft-touch control has n way switch.

Described single live wire unit includes single live wire power getting module and single live wire break-make control module, is provided with single live wire input Hold AC, n single fire wire output end AC1-ACn, n single live wire break-make control signal input G1-Gn and DC supply Outfan+VCC.Single live wire power getting module has single live wire ON state current-taking function and OFF state current-taking function, for leading to single live wire Disconnected control module and touch unit, holding unit, anti-interference unit offer DC supply.The ground end of DC supply is Single live wire break-make control module and touch unit, holding unit, anti-interference unit are publicly.

It is illustrated in figure 2 the circuit of the n single live wire unit embodiment equal to 3.Single live wire power getting module includes that single live wire is steady Depressor U01 and peripheral cell diode D51, diode D61, diode D71, electric capacity C01, electric capacity C02, inductance L01, inductance L02, and low-dropout regulator U02 and peripheral cell electric capacity C03, electric capacity C04.In single live wire unit embodiment, single live wire The model of manostat U01 is MP-6V-02S, and the model of low-dropout regulator U02 is HT7350.

Single live wire input AC is the simulation ground AGND of single live wire unit, is connected to the alternating current of single live wire manostat U01 Pressure common port COM；The two ends of electric capacity C01 are respectively connecting to filter capacitor input FIL and the alternating current of single live wire manostat U01 Pressure common port COM；The VD ground GND end of single live wire manostat U01 be single live wire unit publicly, inductance L02 Two ends be respectively connecting to single live wire unit publicly with simulation ground；Diode D51, diode D61, diode D71, inductance L01 and electric capacity C02 form halfwave rectifier filter circuit, the input of halfwave rectifier filter circuit by diode D51, diode D61, Diode D71 is respectively connecting to 3 single fire wire output end AC1, AC2, AC3, and output is connected to the direct current of single live wire manostat U01 High voltage input terminal HDC.Single live wire manostat U01 is additionally provided with DC voltage output end VCC, alternating current pressure side AC.Diode D51, Diode D61, diode D71 composition or logical relation, as long as having one to have in 3 single fire wire output end AC1, AC2, AC3 220V alternating current, then the high direct voltage input HDC of U01 obtains high direct voltage input.

The input VIN of low-dropout regulator U02 is connected to the DC voltage output end VCC of single live wire manostat U01, The DC voltage output end output DC voltage+VCC1 of U01；The direct current work of low-dropout regulator U02 outfan VOUT output+5V Make power supply+VCC；The ground end GND of single live wire manostat U01 is connected to single live wire unit publicly；Electric capacity C03, electric capacity C04 divide Wei the input voltage of low-dropout regulator U02, output voltage filter capacitor.

Single live wire break-make control module of single live wire unit embodiment is the bidirectional thyristor switch electricity that 3 structures are identical Road, is controlled break-make by single live wire break-make control signal G1, G2, G3 respectively.1st tunnel includes that bidirectional thyristor V51, controllable silicon export Optocoupler U51, resistance R51, resistance R52, resistance R53；2nd tunnel includes that bidirectional thyristor V61, controllable silicon export optocoupler U61, resistance R61, resistance R62, resistance R63；3rd tunnel include bidirectional thyristor V71, controllable silicon output optocoupler U71, resistance R71, resistance R72, Resistance R73.Controllable silicon output optocoupler U51, U61, U71 are phase shift type, and in single live wire unit embodiment, their model is MOC3053.When increasing number of switches, need to increase the identical bidirectional thyristor on-off circuit of structure, and corresponding composition or The halfwave rectifier diode of logical relation；When reducing number of switches, remove 1-2 road bidirectional thyristor on-off circuit, and accordingly Composition or the halfwave rectifier diode of logical relation.

Explanation as a example by Fig. 2 the 1st road bidirectional thyristor on-off circuit.Two anode taps of bidirectional thyristor V51 are respectively It is connected to single fire wire output end AC1 and alternating current pressure side AC of single live wire manostat U01；Resistance R51 is connected in parallel on bidirectional thyristor Two anode taps of V51；The output controllable silicon of controllable silicon output optocoupler U51 is connected with resistance R52, and its series arm is connected to double To the first anode of IGCT V51 and control pole；The input light emitting diode of controllable silicon output optocoupler U51 is connected with resistance R53, Its series arm one end is connected to DC supply+VCC, and other end is single live wire break-make control signal input G1.Single When live wire break-make control signal G1 is low level, bidirectional thyristor V51 turns on, and the 1st way switch is ON state；Single live wire break-make controls When signal G1 is high level, bidirectional thyristor V51 ends, and the 1st way switch is OFF state.

In Fig. 2, when bidirectional thyristor V51, V61, V71 there being 1 end, through diode D51, diode D61, two poles Pipe D71 composition or logic halfwave rectifier and inductance L01, electric capacity C02 filtering after, the DC voltage obtaining more than 300V is delivered to The high direct voltage input HDC of single live wire manostat U01, single live wire manostat U01 export DC voltage+VCC1 after DC/DC, Realize OFF state power taking.When bidirectional thyristor V51, V61, V71 all turn on, load current is via single live wire manostat U01's Alternating current pressure side AC and alternating voltage common port COM conducting, single live wire manostat U01 carries out power taking by load current, it is achieved ON state power taking, electric capacity C01 is ON state power taking filter capacitor.DC voltage+the VCC1 of single live wire manostat U01 ON state power taking output Relevant with bearing power, i.e. power the biggest output DC voltage+VCC1 increases accordingly.

It is illustrated in figure 3 the n circuit equal to 3 touch unit embodiments 1, including capacitance touch integration module U41, electric capacity C41, electric capacity C42, electric capacity C43, electric capacity C44, resistance R41, resistance R42, resistance R43, resistance R44, resistance R45, resistance R46, Resistance R47, driver F41, driver F42, driver F43, K1, K2, K3 are touch point.In touch unit embodiment 1, electric capacity Touch the 4 passages touch IC that integration module U41 selects model to be TS04.TS04 is provided with input CS1-CS4, outfan OUT1-OUT4, configuration end RB, noise monitoring end DUMMY and power end VDD, power supply ground end GND.Power end VDD, power supply ground End GND is respectively connecting to DC supply+VCC and publicly；End DUMMY is unsettled in noise monitoring；Resistance R44 is connected in parallel on configuration End RB and publicly, electric capacity C44 are connected in parallel on and configure end RB and DC supply+VCC；Input CS1-CS3 is respectively through resistance R41, resistance R42, resistance R43 are connected to touch point K1, K2, K3, and electric capacity C41, electric capacity C42, electric capacity C43 are connected in parallel on input respectively End CS1-CS3 and publicly；Resistance R45, resistance R46, resistance R47 are respectively the pull-up resistor of open-drain output OUT1-OUT3； OUT1-OUT3 output touch pulse P1-P3 after driver F41-F43 drives respectively.TS04 has touch input when input Time, outfan output low level.The effect of driver F41-F43 is the high level driving force improving and touching pulse P1-P3 With low level driving force.In Fig. 3, driver F41-F43 is rp-drive, therefore, when input has touch input, touches The touch pulse P1-P3 touching unit output is positive pulse.If F41-F43 selects driven in phase device, then have when input During touch input, the touch pulse P1-P3 of touch unit output is negative pulse.TS04 is that 4 passages touch IC, can do 4 and touch Touch switch；If needing the soft-touch control of other quantity, can select to increase TS04 chip, or using monolithic or many Sheet single pass TS01 chip, the TS02 chip of 2 passages, the TS06 chip of 6 passages, the TS08 chip of 8 passages, or other Touch IC etc. to constitute.

It is illustrated in figure 4 the circuit of the n touch unit embodiment 2 equal to 2, including capacitance touch integration module U45, electric capacity C45, electric capacity C46.Touch integration module U45 and use double bond capacitance touch inductive switch chip ASC0104-2, the 2 of ASC0104-2 Individual touch input end TP0, TP1 connect touch point K1, K2 respectively, meanwhile, touch input end TP0, TP1 respectively via electric capacity C45, Electric capacity C46 ground connection；2 touch signals outfan TPQ0, TPQ1 of ASC0104-2 are respectively and touch pulse P1, P1；ASC0104- The output type of 2 selects end and power supply negative terminal VSS to be connected to power supply ground, and ASC0104-2 is operated in Direct Model, when touch comes into force Outfan OUT output high level or low level；The high/low significant level of ASC0104-2 selects end AHLB and power positive end VDD Being connected to DC supply+VCC, touch outfan OUT output low level when coming into force, touching pulse P1, M1 is negative pulse.

Holding unit is n T ' trigger, and T ' trigger can use d type flip flop, JK flip-flop to constitute, or with two System Counters etc. realize.The input and output of each T ' trigger are corresponding control pulse and single live wire break-make control letter Number, such as, the input of the 1st way switch for controlling pulse M1, being output as single live wire break-make control signal G1, the 2nd way switch defeated Enter for controlling pulse M2, being output as single live wire break-make control signal G2.

Anti-interference unit has n identical anti-jamming circuit, and the input and output of each anti-jamming circuit are corresponding touch pulse With control pulse, such as, the input of the 1st way switch is for touching pulse P1, being output as controlling pulse M1, the input of the 2nd way switch For touching pulse M1, being output as controlling pulse M2.

It is illustrated in figure 5 the anti-jamming circuit embodiment 1 of the 1st way switch.In anti-jamming circuit embodiment 1, repid discharge two pole Pipe, charging resistor, repid discharge switch are respectively diode D11, resistance R11, switch T11, constitute quick discharging circuit；Hurry up Speed charging diode, discharge resistance, fast charge switch are respectively diode D12, resistance R12, switch T12, constitute quickly Charging circuit；Electric capacity is electric capacity C11.Schmidt circuit F11 is homophase Schmidt circuit, controls pulse M1 and touch in embodiment 1 Feel pulse and rush P1 homophase.The input of the one termination Schmidt circuit of electric capacity C11, i.e. the input A2 of F11, other end is connected to Publicly.The anode of diode D11 is connected to the input A2 of F11, and negative electrode is connected to touch pulse ends after connecting with switch T11 P1, when switching T11 conducting, the unidirectional current of diode D11 flows to as flowing to touch pulse ends P1 from the input A2 of F11. The negative electrode of diode D12 is connected to the input A2 of F11, and anode is connected to touch pulse ends P1, when opening after connecting with switch T12 When closing T12 conducting, the unidirectional current of diode D12 flows to the input A2 for flowing to F11 from touch pulse ends P1.

Repid discharge switch, fast charge switch are the bilateral analog switch of Automatic level control.In embodiment 1, switch T11, Switch connection when switch T12 all selects control signal to be high level, the bidirectional analog of switch OFF when control signal is low level Switch, model can select CD4066, or CD4016.In embodiment 1, Schmidt circuit F11 is homophase Schmidt circuit, Control pulse M1 (A3 point in Fig. 5) and be connected directly to switch the Automatic level control end of T12, control the high and low level of pulse M1 respectively Control switch T12 to connect, turn off；Control pulse M1 after phase inverter F12 (in Fig. 5Point) it is connected to switch the level of T11 Controlling end, the high and low level controlling pulse M1 controls to switch T11 shutoff, connect respectively.It is controlled the control of pulse M1, opens Close T11 with switch T12 in always one in an ON state, another one is off state.

Fig. 6 is the touch pulse of anti-jamming circuit embodiment 1 and controls impulse waveform.In Fig. 6, P1 is for touching pulse, and M1 is Controlling pulse, when P1 low level is normal negative broad pulse, in Fig. 5, A2 point current potential is consistent with A1 point low level current potential, and M1 is Low level, switch T11 connects, T12 turns off.Electric capacity C11 is charged by the high level of positive pulse 11 by charging resistor R11, makes A2 Point current potential rises；Owing to the width of positive pulse 11 is still below Schmidt less than time T1, A2 point current potential at the end of positive pulse 11 The upper limit threshold voltage of circuit F11, therefore, M1 is maintained low level, and switch T11 maintains and connects；At the end of positive pulse 11, A1 point Again become low level and make electric capacity C11 repid discharge by repid discharge diode D11, making A2 point current potential and A1 point low level Current potential is consistent, recovers the state before arriving to positive pulse 11, and its capacity of resisting disturbance is recovered rapidly, when followed by having continuously Positive narrow pulse interference signal time, can filter out equally.The width of positive pulse 12 is again smaller than time T1, therefore, works as positive pulse At the end of 12, M1 is maintained low level, and A1 point again becomes low level and makes electric capacity C11 fast by repid discharge diode D11 Speed electric discharge, makes A2 point current potential consistent with A1 point low level current potential.

Pulse 13 is normal positive broad pulse, when P1 maintains high level time to reach T1 after rising edge 17, the height of P1 Electric capacity C11 is charged by level by charging resistor R11, makes A2 point current potential rise the upper limit threshold electricity reaching Schmidt circuit F11 Pressure, Schmidt circuit F11 output M1 becomes high level from low level at rising edge 18, makes switch T11 shutoff, T12 connect；A1 The high level of point makes electric capacity C11 quick charge by quick charge diode D12, makes A2 point current potential and A1 point high level current potential one Causing, M1 is maintained high level.

Electric capacity C11 is discharged by the low level of negative pulse 15 by discharge resistance R12, makes A2 point current potential decline；Due to negative arteries and veins The width of punching 15 remains above the lower limit threshold electricity of Schmidt circuit F11 less than time T2, A2 point current potential at the end of negative pulse 15 Pressure, therefore, M1 is maintained high level, and switch T12 maintains and connects；At the end of negative pulse 15, A1 point again becomes high level and leads to Cross quick charging diode D12 and make electric capacity C11 quick charge, make A2 point current potential consistent with A1 point high level current potential, recover to negative State before pulse 15 arriving, its capacity of resisting disturbance is recovered rapidly, when followed by there being continuous print to bear narrow pulse interference letter Number time, can filter out equally.The width of negative pulse 16 is again smaller than time T2, and therefore, at the end of negative pulse 16, M1 is maintained High level, A1 point again becomes high level and makes electric capacity C11 quick charge by quick charge diode D12, making A2 point current potential Consistent with A1 point high level current potential.

When P1 maintains low level time to reach T2 after trailing edge 19, represent that P1 has a broad pulse the most negative, P1 Low level by discharge resistance R12, electric capacity C11 is discharged, make the decline of A2 point current potential reach the lower limit door of Schmidt circuit F11 Sill voltage, Schmidt circuit F11 output M1 becomes low level from high level at trailing edge 20, makes switch T11 connection, T12 close Disconnected；The low level of A1 point makes electric capacity C11 repid discharge by repid discharge diode D11, makes A2 point current potential and A1 point low level Current potential is consistent, and M1 is maintained low level.Negative broad pulse 21 width of P1 is more than T2, ties up after the rising edge 23 of negative broad pulse 21 Holding high level time when reaching T1, M1 becomes high level from low level at rising edge 24.

Positive burst pulse 11 in P1 signal, positive burst pulse 12, negative burst pulse 15, negative burst pulse 16 are all filtered by anti-jamming circuit Fall, and positive broad pulse 13, negative broad pulse 21 can be passed through, make M1 signal occurs corresponding positive broad pulse 14 and negative broad pulse 22.Control pulse M1 and touch pulse P1 homophase, and broad pulse 14 rising edge exported is more stagnant than broad pulse 13 rising edge of input Rear time T1, trailing edge T2 lag time.

Time T1 is the maximum positive narrow pulse width that anti-jamming circuit can filter.T1 is by charge constant, touch arteries and veins Rush the high level current potential of P1, the low level current potential touching pulse P1 and the upper limit threshold voltage joint effect of Schmidt circuit F11. Under normal circumstances, the high level current potential and the low level current potential that touch pulse P1 are definite value, and therefore, the value adjusting T1 can be by changing The upper limit threshold voltage becoming charge constant or Schmidt circuit is carried out.In Fig. 5, charge constant is charging resistor The product of R11 and electric capacity C11.

Time T2 is that the maximum that anti-jamming circuit can filter bears narrow pulse width.T2 is by discharge time constant, touch arteries and veins Rush the high level current potential of P1, the low level current potential touching pulse P1 and the lower limit threshold voltage joint effect of Schmidt circuit F11. Under normal circumstances, the high level current potential and the low level current potential that touch pulse P1 are definite value, and therefore, the value adjusting T2 can be by changing The lower limit threshold voltage becoming discharge time constant or Schmidt circuit is carried out.In Fig. 5, discharge time constant is discharge resistance The product of R12 and electric capacity C11.

In Fig. 5, diode D11 connects with switch T11 with after resistance R11 parallel connection again, touches pulse P1 and first passes through from A1 point Switch T11, the parallel circuit being then passed through diode D11 and resistance R11 arrive A2 point, flow to relation according to pulse signal, soon Speed discharge switch is connected in series in before the parallel circuit of repid discharge diode and charging resistor；Diode D12 and resistance Connecting with switch T12 after R12 parallel connection again, flow to relation according to pulse signal, fast charge switch is connected in series in quick charge Before the parallel circuit of diode and discharge resistance.The series position of repid discharge switch can also be placed on repid discharge two pole After the parallel circuit of pipe and charging resistor, similarly, the series position of fast charge switch can also be placed on quick charge After the parallel circuit of diode and discharge resistance.It addition, electric capacity C11 connect one end publicly can also reconfiguration anti-interference electricity The power supply end on road, the power supply of anti-jamming circuit is DC supply+VCC.

In Fig. 5, Schmidt circuit F11 can also select anti-phase Schmidt circuit, now controls pulse M1 and touches pulse P1 is anti-phase, controls pulse M1 and inversion signal controls switch T11, the connected mode of switch T12 needs according to controlling pulse M1 High and low level respectively control switch T12 turn off, connect, control pulse M1 high and low level respectively control switch T11 connect, Turn off and carry out.

Fig. 7 show the anti-jamming circuit embodiment 2 of the 1st way switch, repid discharge diode, charging resistor, repid discharge Switch is respectively diode D21, resistance R21, switch T21, and quick charge diode, discharge resistance, fast charge switch are respectively For diode D22, resistance R22, switch T22, electric capacity is electric capacity C21.Schmidt circuit F21 is homophase Schmidt circuit, controls Pulse M1 (B3 point in Fig. 7) is connected directly to switch the Automatic level control end of T22；Control pulse M1 (Fig. 7 after phase inverter F22 InPoint) it is connected to switch the Automatic level control end of T21.Embodiment 2 is similar with embodiment 1 structure shown in Fig. 5, difference One is the input of a termination Schmidt circuit of electric capacity C21, and other end is connected to the power supply+VCC of anti-jamming circuit；No Being to flow to relation according to pulse signal with part two, the series position of repid discharge switch is at repid discharge diode and charged electrical After the parallel circuit of resistance, i.e. switch T21 is connected on after diode D21 and resistance R21 parallel circuit.Embodiment 2 Operation principle is same as in Example 1.

Being illustrated in figure 8 the anti-jamming circuit embodiment 3 of the 1st way switch, repid discharge diode, charging resistor are respectively two Pole pipe D31, resistance R31, quick charge diode, discharge resistance be respectively diode D32, resistance R32, repid discharge switch with Fast charge switch is numerically controlled multiway analog switch T31, and the normal open switch of T31 is repid discharge switch, normally closed switch For fast charge switch；Diode D31, resistance R31 are quick with normal open switch (C1 in Fig. 8) composition of multiway analog switch T31 Discharge circuit, diode D32, resistance R32 are electric with normally closed switch (C0 in Fig. 8) the composition quick charge of multiway analog switch T31 Road；Electric capacity is electric capacity C31, and the input of a termination Schmidt circuit of electric capacity C31, i.e. the input C2 of F31, other end is even It is connected to publicly.Schmidt circuit F31 is anti-phase Schmidt circuit, it is desirable to the high level control repid discharge controlling pulse M1 is opened Close connection, fast charge switch turns off, and low level control repid discharge switch OFF, fast charge switch are connected；In Fig. 8, control Pulse M1 processed (C3 point in Fig. 8) is connected directly to the digital control end of multiway analog switch T31, controls the high level control of pulse M1 The normal open switch of multiway analog switch T31 processed is connected, normally closed switch turns off, and the high level i.e. controlling pulse M1 controls repid discharge Switch connection, fast charge switch turn off；The normal open switch of the low level control multiway analog switch T31 controlling pulse M1 closes Disconnected, normally closed switch is connected, and i.e. controls the low level control repid discharge switch OFF of pulse M1, fast charge switch connection.

Numerically controlled multiway analog switch can select the device of the different models such as CD4051, CD4052, CD4053.Real Executing in example 3, T31 selects numerically controlled 2 tunnels analogy switch CD4053.

Fig. 9 is the touch pulse of anti-jamming circuit embodiment 3 and controls impulse waveform.In Fig. 9, P1 is for touching pulse, and M1 is Control pulse, when P1 low level is normal negative broad pulse, C2 point current potential and pulse input end C4 point low level current potential in Fig. 8 Unanimously, M1 is high level, and T31 normal open switch is connected, normally closed switch turns off.The high level of positive burst pulse 31 passes through charging resistor Electric capacity C31 is charged by R31, makes C2 point current potential increase；Owing to the width of burst pulse 31 is less than time T1, C2 point current potential in burst pulse Being still below the upper limit threshold voltage of Schmidt circuit F31 at the end of 31, therefore, M1 is maintained high level, and T31 state maintains；Narrow Pulse 31 terminates, and C4 point again becomes low level and makes electric capacity C31 repid discharge by repid discharge diode D31, makes C2 point Current potential is consistent with C4 point low level current potential, recovers the state before arriving to burst pulse 31, and its capacity of resisting disturbance is recovered rapidly, When followed by when having continuous print positive narrow pulse interference signal, can filter out equally.The width of positive burst pulse 32 again smaller than time Between T1, therefore, at the end of burst pulse 32, M1 is maintained high level, and C4 point becomes low level and again by repid discharge two Pole pipe D31 makes electric capacity C31 repid discharge, makes C2 point current potential consistent with C4 point low level current potential.

Pulse 33 is normal positive broad pulse, when P1 maintains high level time to reach T1 after rising edge 37, the height of P1 Electric capacity C31 is charged by level by charging resistor R31, makes C2 point current potential rise the upper limit threshold electricity reaching Schmidt circuit F31 Pressure, Schmidt circuit F31 output M1 becomes low level from high level at trailing edge 38, makes T31 normal open switch turn off, normally closed open Close and connect；The high level of C4 point makes electric capacity C31 quick charge by quick charge diode D32, makes C2 point current potential high with C4 point Level potential is consistent, and M1 is maintained low level.

Electric capacity C31 is discharged by the low level of negative burst pulse 35 by discharge resistance R32, makes C2 point current potential decline；Due to narrow The width of pulse 35 remains above the lower limit threshold of Schmidt circuit F31 less than time T2, C2 point current potential at the end of burst pulse 35 Voltage, therefore, M1 is maintained low level, and T31 state maintains；Burst pulse 35 terminates, and C4 point becomes high level and again by fast Speed charging diode D32 makes electric capacity C31 quick charge, makes C2 point current potential consistent with C4 point high level current potential, recovers to burst pulse 31 arrive before state, its capacity of resisting disturbance is recovered rapidly, when followed by when having continuous print to bear narrow pulse interference signal, Can filter out equally.The width of negative burst pulse 36 is again smaller than time T2, and therefore, at the end of burst pulse 36, M1 is maintained low Level, C4 point again becomes high level and makes electric capacity C31 quick charge by quick charge diode D32, make C2 point current potential with C4 point high level current potential is consistent.

When P1 maintains low level time to reach T2 after trailing edge 39, represent that P1 has a broad pulse the most negative, P1 Low level by discharge resistance R32, electric capacity C31 is discharged, make the decline of C2 point current potential reach the lower limit door of Schmidt circuit F31 Sill voltage, Schmidt circuit F31 output M1 becomes high level from low level at rising edge 40, makes T31 normal open switch connect, often Close switch OFF；The low level of C4 point makes electric capacity C31 repid discharge by repid discharge diode D31, makes C2 point current potential and C4 Point low level current potential is consistent, and M1 is maintained high level.Negative broad pulse 41 width of P1 is more than T2, at the rising edge of negative broad pulse 41 When maintaining high level time to reach T1 after 43, M1 becomes low level from high level at trailing edge 44.

Burst pulse 31 in P1 signal, burst pulse 32, burst pulse 35, burst pulse 36 are all filtered out by anti-jamming circuit, and just Broad pulse 33, negative broad pulse 41 can be passed through, and make to occur in M1 signal the corresponding and negative broad pulse 34 anti-phase with P1 and the widest Pulse 42.

In Fig. 9, time T1 is the maximum positive narrow pulse width of the input that anti-jamming circuit can filter, and the value adjusting T1 is permissible Carry out by changing the upper limit threshold voltage of charge constant or Schmidt circuit.In Fig. 8, charge constant is for filling The product of electricity resistance R31 and electric capacity C31.Time T2 is that the maximum of the input that anti-jamming circuit can filter bears narrow pulse width.Adjust The value of whole T2 can be carried out by changing the lower limit threshold voltage of discharge time constant or Schmidt circuit.In Fig. 8, electric discharge Time constant is the product of discharge resistance R32 and electric capacity C31.

In Fig. 8, multiway analog switch T31 uses allotter connection, digital signal C3 control to touch pulse P1 and divide It is assigned to quick discharging circuit or quick-charging circuit；Multiway analog switch T31 can also use selector connection, i.e. touches Pulse P1 delivers to quick discharging circuit and quick-charging circuit simultaneously, by Digital Signals select quick discharging circuit or The signal of quick-charging circuit is connected to Schmidt circuit.

In Fig. 8, electric capacity C31 connect one end publicly can also reconfiguration in the power supply end of anti-jamming circuit, i.e. direct current work Make power supply+VCC.

In Fig. 8, Schmidt circuit F31 can also select homophase Schmidt circuit.

Figure 10 show the anti-jamming circuit embodiment 4 of the 1st way switch, and repid discharge diode, charging resistor are respectively two Pole pipe D35, resistance R35, quick charge diode, discharge resistance be respectively diode D36, resistance R36, repid discharge switch with Fast charge switch is numerically controlled multiway analog switch T35；Electric capacity is electric capacity C35, termination Schmidt's electricity of electric capacity C35 The input D2 of the input on road, i.e. F35, other end is connected to publicly.Embodiment 4 is similar with the structure of embodiment 3, no Being that one is that multiway analog switch T35 have employed selector connection with part, selector connection and allotter connection are former from work It is different what does not has in reason；Two be Schmidt circuit F35 be homophase Schmidt circuit, control pulse M1 with touch pulse P1 with Phase, controls pulse M1 (D3 point in Figure 10) and is connected directly to the digital control end of multiway analog switch T35, so T35's is normally closed Switching and switch for repid discharge, normal open switch is fast charge switch；Diode D35, resistance R35 and multiway analog switch T35 Normally closed switch (D0 in Figure 10) composition quick discharging circuit, diode D36, resistance R36 are normally opened with multiway analog switch T35's Switch (D1 in Figure 10) composition quick-charging circuit.

The input signal of described Schmidt circuit is the voltage on electric capacity, it is therefore desirable to Schmidt circuit has high input Impedance operator.Schmidt circuit can select to have high input impedance charcteristic cmos schmitt phase inverter CD40106, 74HC14, or select that there is the devices such as cmos schmitt NAND gate CD4093 of high input impedance charcteristic, 74HC24.CMOS The upper limit threshold voltage of schmitt inverter or cmos schmitt NAND gate, lower limit threshold voltage are consolidate relevant to device Definite value, therefore, the positive narrow pulse width of the input that adjustment can be filtered, negative narrow pulse width need by changing the charging interval normal Number, discharge time constant are carried out.Constitute homophase Schmidt circuit by schmitt inverter or Schmidt's NAND gate, need One-level phase inverter is increased after schmitt inverter or Schmidt's NAND gate.

Schmidt circuit can also select to use operational amplifier to constitute, and uses operational amplifier to constitute Schmidt's electricity Road can change upper limit threshold voltage, lower limit threshold voltage neatly.Similarly, operational amplifier is used to constitute Schmidt's electricity Lu Shi, needs to use structure and the circuit with high input impedance charcteristic.

When operating soft-touch control, the normal touch time is not less than 100ms, touches pulse width not the most normally Less than 100ms；Interval between twice touch also will not be less than 100ms.Described anti-jamming circuit allows the width positive arteries and veins more than T1 Punching and the width undersuing more than T2 are passed through, and therefore, the span of T1, T2 is 10ms to 100ms, and representative value all takes During 30ms, it is possible to effectively disturbing pulse more than Hz noise and power frequency is filtered.

Claims (8)

1. a single live wire soft-touch control, it is characterised in that:

Including single live wire unit, holding unit, anti-interference unit and touch unit；

Described single live wire unit includes single live wire power getting module and single live wire break-make control module, be provided with single live wire input, 3 Individual single fire wire output end, 3 single live wire break-make control signal inputs and DC supply outfan；

Described holding unit is provided with 3 single live wire break-make control signal outfans and 3 control pulse input ends；Described 3 Single live wire break-make control signal outfan is connected to 3 single live wire break-make control signal inputs；

Described anti-interference unit is provided with 3 and controls pulse output end and 3 touch pulse input ends；Described 3 control pulses are defeated Go out end and be connected to 3 control pulse input ends；

Described touch unit is provided with 3 and touches pulse output end, and described 3 touch pulse output ends are connected to 3 and touch arteries and veins Rush input.

Single live wire soft-touch control the most according to claim 1, it is characterised in that: described single live wire break-make control module is by 3 Individual bidirectional thyristor on-off circuit forms；Described 3 bidirectional thyristor on-off circuits are respectively by 3 single live wire break-make control signals 3 single live wire break-make control signals of input input control.

Single live wire soft-touch control the most according to claim 1, it is characterised in that: described single live wire power getting module is to single live wire Break-make control module and touch unit, holding unit, anti-interference unit offer DC supply；Described DC supply Ground end be single live wire break-make control module and touch unit, holding unit, anti-interference unit publicly.

Single live wire soft-touch control the most according to claim 1, it is characterised in that: described touch unit uses capacitance touch Button, exports 3 and touches pulse.

5. according to the single live wire soft-touch control according to any one of claim 1-4, it is characterised in that: described anti-interference unit bag Include 3 anti-jamming circuits；Described anti-jamming circuit includes quick discharging circuit, quick-charging circuit, electric capacity, Schmidt circuit；

One end of described quick discharging circuit is connected to touch pulse ends, and other end is connected to Schmidt circuit input；

One end of described quick-charging circuit is connected to touch pulse ends, and other end is connected to Schmidt circuit input；

One end of described electric capacity is connected to Schmidt circuit input, and other end is connected to publicly or DC operation electricity Source；

The outfan of described Schmidt circuit is for controlling pulse ends.

Single live wire soft-touch control the most according to claim 5, it is characterised in that:

Described quick discharging circuit includes repid discharge diode, charging resistor, repid discharge switch；Described repid discharge two pole Manage in parallel with charging resistor after, negative electrode be connected to repid discharge switch one end, anode is the outfan of quick discharging circuit；Institute State the input that other end is quick discharging circuit of repid discharge switch；

Described quick-charging circuit includes quick charge diode, discharge resistance, fast charge switch；Described quick charge two pole Manage in parallel with discharge resistance after, anode is connected to one end of fast charge switch, and negative electrode is the outfan of quick-charging circuit；Institute State the input that other end is quick-charging circuit of fast charge switch.

Single live wire soft-touch control the most according to claim 6, it is characterised in that: described repid discharge switch and quick charge Switch is the bilateral analog switch of Automatic level control.

Single live wire soft-touch control the most according to claim 7, it is characterised in that: described Schmidt circuit is homophase Schmidt Circuit；The end that controls of described repid discharge switch is connected to the reversed-phase output controlling pulse of place anti-jamming circuit；Described soon The end that controls of speed charge switch is connected to the control pulse ends of place anti-jamming circuit.