CN205681389U - How one controls switch - Google Patents
How one controls switch Download PDFInfo
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- CN205681389U CN205681389U CN201620578949.4U CN201620578949U CN205681389U CN 205681389 U CN205681389 U CN 205681389U CN 201620578949 U CN201620578949 U CN 201620578949U CN 205681389 U CN205681389 U CN 205681389U
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Abstract
How one controls switch, including single live wire unit, holding unit, anti-interference unit and many ground switch element, can realize at unlimited multi-class traffics illuminating lamp or other electric equipments.The described switch that how to control allows width to pass through more than the normal operating pulse 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 the positive burst pulse of continuous print or negative narrow pulse interference signal be can filter soon, rising edge shake and the trailing edge shake of switching pulse eliminated;The positive burst pulse filtering and negative burst pulse Breadth Maximum is needed to be adjusted by changing positive charge time and reverse charging time respectively.Described how control switch can be as the substitute products of regular tap.
Description
Technical field
The utility model relates to the control switch of a kind of electric equipment, and how especially one controls switch.
Background technology
When requiring to carry out how controlling to lamp or other electrical equipment, at present conventional method one be use double control switch and
Double-point double-throw switch, field connection is complicated;Two is to use intelligent switch, and cost is high, and the MCU within intelligent switch is easily subject to
Various interference effects, easily there is uncontrolled misoperation in switch.
Content of the invention
In order to solve the existing problem how controlling switch existence, the utility model provides one and controls switch manyly,
Including single live wire unit, holding unit, anti-interference unit and many ground switch element.
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, single fire wire output end, single live wire break-make control signal input and DC supply output;Described single live wire break-make control
Molding block is made up of bidirectional thyristor on-off circuit;Described single live wire break-make control signal is the trigger of bidirectional thyristor.
Described holding unit is provided with single live wire break-make control signal output and control pulse input end;Described single live wire
Break-make control signal output is connected to single live wire break-make control signal input.
Described anti-interference unit is provided with control pulse output end and switching pulse input;Described control pulse output end is even
It is connected to control pulse input end;Described anti-interference unit includes forward charge-discharge circuit, reverse charge-discharge circuit, data selector.
Described many ground switch element is provided with switching pulse output, and described switching pulse output is connected to switching pulse
Input.
Described single live wire power getting module for single live wire break-make control module and many ground switch element, holding unit,
Anti-interference unit provides DC supply;The ground end of described DC supply is for single live wire break-make control module and how to open
Close unit, holding unit, anti-interference unit publicly.
Described many ground switch element includes the self-resetting switch of 1 and 1 more parallel, output switch pulse.
The input signal of described forward charge-discharge circuit and reverse charge-discharge circuit is switching pulse;Described data selector
For alternative data selector;Two data input pins of described data selector are respectively connecting to forward charge-discharge circuit, anti-
To the output of charge-discharge circuit;The data output end of described data selector is control pulse ends;Described data selector by
Control pulse carries out data and selects control.
Described forward charge-discharge circuit includes forward current driver, forward anti-interference capacitor, the anti-interference Schmidt of forward
Circuit;The input of described forward current driver is forward charge-discharge circuit input, and output is connected to that forward is anti-interference to be executed
Close special circuit input end;One end of described forward anti-interference capacitor is connected to forward anti-interference Schmidt circuit input, additionally
One end is connected to publicly or DC supply.
Described reverse charge-discharge circuit includes reversing the current driver, reverse anti-interference capacitor, reverse anti-interference Schmidt
Circuit;The input of described reversing the current driver is the input of reverse charge-discharge circuit, and output is connected to reversely anti-interference
Schmidt circuit input;One end of described reverse anti-interference capacitor is connected to reverse anti-interference Schmidt circuit input, separately
Outer one end is connected to publicly or DC supply.
Described forward anti-interference Schmidt circuit output is forward charge-discharge circuit output, reverse anti-interference Schmidt
Circuit output end is reverse charge-discharge circuit output.
The beneficial effects of the utility model are: described how control switch can realize at unlimited multi-class traffics illuminating lamp or
Other electric equipments of person;Allow width normal self-resetting switch pulse to pass through, can automatic fitration just bear during broad pulse
Negative narrow pulse interference during burst pulse and positive broad pulse, by the High-frequency Interference pulse filter producing because of long transmission line during his ground control
Remove;Quick-recovery filter capacity filtration continuous print positive narrow pulse interference signal and continuous print can bear narrow pulse interference signal soon, disappear
Rising edge shake and trailing edge shake except switching pulse;Regular tap can be substituted.
Brief description
Fig. 1 is how to control Switching embodiments structure chart;
Fig. 2 is single live wire unit embodiment circuit;
Fig. 3 is many ground switch element embodiment circuit;
Fig. 4 is anti-interference unit embodiment;
Fig. 5 is the waveform of anti-interference unit embodiment;
Fig. 6 is forward current driver and reversing the current driver embodiment 1 circuit;
Fig. 7 is forward current driver and reversing the current driver embodiment 2 circuit;
Fig. 8 is forward current driver and reversing the current driver embodiment 3 circuit.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
It is illustrated in figure 1 and how to control Switching embodiments structure chart, including single live wire unit the 10th, holding unit the 20th, anti-interference
Unit 30 and many ground switch element 40.
The switching pulse P1 of many ground switch element output is sent to anti-interference unit, and switching pulse P1 is resisted by anti-interference unit
After interference is processed, the control pulse M1 of output is sent to holding unit, and control pulse is carried out triggering and state guarantor by holding unit
After holding process, single live wire break-make control signal G1 of output is sent to single live wire 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 AC, single fire wire output end AC1, single live wire break-make control signal input G1 and DC supply output+VCC.Dan Huo
Line electricity-fetching module has single live wire ON state current-taking function and OFF state current-taking function, for single live wire break-make control module and many
Ground switch element, holding unit, anti-interference unit provide DC supply.The ground end of DC supply is single live wire break-make control
Molding block and many ground switch element, holding unit, anti-interference unit are publicly.
Single live wire break-make control module is made up of bidirectional thyristor and triggering drive circuit thereof, the triggering control of bidirectional thyristor
Signal processed is single live wire break-make control signal control of single live wire break-make control signal input input.
It is illustrated in figure 2 the circuit of single live wire unit embodiment.Single live wire power getting module include single live wire voltage-stablizer U01 and
Its peripheral cell diode D51, electric capacity C01, electric capacity C02, inductance L01, inductance L02, and low-dropout regulator U02 and outer
Enclose component capacitance C03, electric capacity C04.In single live wire unit embodiment, the model of single live wire voltage-stablizer U01 is MP-6V-02S, low
The model of pressure reduction voltage-stablizer 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 voltage-stablizer 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 voltage-stablizer U01
Pressure common port COM;The VD ground GND end of single live wire voltage-stablizer U01 for single live wire unit publicly, inductance L02
Two ends be respectively connecting to single live wire unit publicly with simulation ground;Diode D51, inductance L01 and electric capacity C02 composition half-wave
Current rectifying and wave filtering circuit, the input of halfwave rectifier filter circuit is connected to single fire wire output end AC1 by diode D51, and output connects
High direct voltage input HDC to single live wire voltage-stablizer U01.Single live wire voltage-stablizer U01 be additionally provided with DC voltage output end VCC,
Alternating current pressure side AC.
The input VIN of low-dropout regulator U02 is connected to the DC voltage output end VCC of single live wire voltage-stablizer U01,
The DC voltage output end output DC voltage+VCC1 of U01;The direct current work of low-dropout regulator U02 output VOUT output+5V
Make power supply+VCC;The ground end GND of single live wire voltage-stablizer 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 bidirectional thyristor on-off circuit, by single live wire break-make
Control signal G1 controls break-make, including bidirectional thyristor V51, controllable silicon output optocoupler U51, resistance R51, resistance R52, resistance
R53.Controllable silicon output optocoupler U51 is phase shift type, and in single live wire unit embodiment, model is MOC3053.
Two anode taps of bidirectional thyristor V51 are respectively connecting to single fire wire output end AC1 and single live wire voltage-stablizer U01's
Alternating current pressure side AC;Resistance R51 is connected in parallel on two anode taps of bidirectional thyristor V51;The output of controllable silicon output optocoupler U51 can
Control silicon is connected with resistance R52, and its series arm is connected to the first anode and the control pole of bidirectional thyristor V51;Controllable silicon exports
The input light emitting diode of optocoupler U51 is connected with resistance R53, and its series arm one end is connected to DC supply+VCC, separately
Outer one end is single live wire break-make control signal input G1.When single live wire break-make control signal G1 is low level, bidirectional thyristor
V51 turns on, and the 1st way switch is ON state;When single live wire break-make control signal G1 is high level, bidirectional thyristor V51 ends, and the 1st
Way switch is OFF state.
In Fig. 2, when bidirectional thyristor V51 ends, filter through diode D51 halfwave rectifier and inductance L01, electric capacity C02
After, the DC voltage obtaining more than 300V delivers to the high direct voltage input HDC of single live wire voltage-stablizer U01, single live wire voltage-stablizer
U01 exports DC voltage+VCC1 after DC/DC, it is achieved OFF state power taking.When bidirectional thyristor V51 turns on, load current via
Alternating current pressure side AC of single live wire voltage-stablizer U01 and alternating voltage common port COM conducting, single live wire voltage-stablizer U01 is by load
Electric current carries out power taking, it is achieved ON state power taking, and electric capacity C01 is ON state power taking filter capacitor.Single live wire voltage-stablizer U01 ON state power taking is defeated
DC voltage+the VCC1 going out is relevant with bearing power, i.e. power bigger output DC voltage+VCC1 increases accordingly.
It is illustrated in figure 3 many ground switch element embodiment circuit of 3 self-resetting switch, including self-resetting switch S91,
Self-resetting switch S92, self-resetting switch S93, resistance R91, driver F91.3 self-resetting switch S91, self-resetting switch S92,
Self-resetting switch S93 is parallel relationship, and resistance R91 is pull-up resistor, self-resetting switch S91, self-resetting switch S92, Self-resetting
Switch S93, resistance R91 composition line and logic.Due to output low level when self-resetting switch is pressed, or operation once exports
Negative switching pulse, so, it between the operation of 3 self-resetting switch and the negative switching pulse of output is or logical relation.Driver F91
For improving the driving force of switching pulse P1.Self-resetting switch S91 in Fig. 3, resistance R91, driver F91 and single live wire list
Unit, holding unit, the circuit of anti-interference unit are installed together, and are controlled load as this locality control switch.Self-resetting is opened
Close S92, self-resetting switch S93 is separately mounted to two other place, switchs as his the ground control in how controlling;His ground is controlled
Self-resetting switch in system switch is all connected in parallel on by connecting line on the self-resetting switch of local control switch.When there being n runback
During bit switch, 1 therein switchs as local control, with pull-up resistor (resistance R91), driver (driver F91), Dan Huo
Line unit, holding unit, the circuit of anti-interference unit are installed together, and are controlled load as this locality control switch;Other
N-1 self-resetting switch is as his ground control switch, the Self-resetting being all connected in parallel in local control switch by connecting line
On switch.Self-resetting switch includes self-resetting button switch, Self-resetting rocker switch etc..
Holding unit is T ' trigger, and T ' trigger can use d type flip flop, JK flip-flop to constitute, or enters with two
Counters processed etc. realize.The input and output of T ' trigger are control pulse M1 and single live wire break-make control signal G1.
Anti-interference unit includes forward charge-discharge circuit, reverse charge-discharge circuit, data selector.
It is illustrated in figure 4 anti-interference unit embodiment.In embodiment, forward current driver, forward anti-interference capacitor, forward
Anti-interference Schmidt circuit is respectively current driver U11, electric capacity C11, Schmidt circuit F11, constitutes forward discharge and recharge electricity
Road;Reversing the current driver, reverse anti-interference capacitor, reverse anti-interference Schmidt circuit are respectively current driver U21, electric capacity
C21, Schmidt circuit F21, constitute reverse charge-discharge circuit.The input of the one termination Schmidt circuit F11 of electric capacity C11,
Other end is connected to publicly;The input of the one termination Schmidt circuit F21 of electric capacity C21, other end is connected to public
Ground.P1 is switching pulse end, and M1 is control pulse ends.
In embodiment, data selector T11 is alternative data selector, two data input signals and output signal it
Between be all same phase relation, Schmidt circuit F11, Schmidt circuit F21 then be respectively homophase Schmidt circuit and anti-phase Schmidt
Circuit, therefore, is same phase relation between data selector T11 output and Schmidt circuit F11 input signal, data selector
It is inverted relationship between T11 output and Schmidt circuit F21 input signal.The function of data selector T11 is: when selection control
During end A=0, export Y=D1;When selecting control end A=1, export Y=D2.Output Y (the i.e. pulse of data selector T11
Output M1) it is connected directly to the selection control end A of data selector T11, pulse M1 is when being low level in control, control data choosing
Selecting device T11 selects output signal A3 of Schmidt circuit F11 to deliver to the output Y of data selector;Control pulse M1 is high electricity
At ordinary times, controlling data selector T11 selects output signal A4 of Schmidt circuit F21 to deliver to the output Y of data selector.
Fig. 5 is the waveform of anti-interference unit embodiment, including switching pulse P1 and Schmidt circuit F11 output A3, Schmidt
Circuit F21 output A4, the waveform of control pulse M1.In Fig. 4, when switching pulse P1 is maintained low level for a long time, A1 point is
Low level, the output A3 of Schmidt circuit F11 is low level;When switching pulse P1 is maintained high level for a long time, A1 point is
High level, A3 is high level.When switching pulse P1 becomes low level from high level, the output A1 of current driver U11 is immediately
Becoming low level current potential, A3 becomes low level from high level immediately.When switching pulse P1 becomes high level from low level, A1 electricity
Position because current driver U11 output driving electric current to electric capacity C11 charge and rise, when charging between reach T1, on A1 current potential
When liter meets and exceeds the upper limit threshold voltage of Schmidt circuit F11, A3 becomes high level from low level;Positive pulse width as P1
Degree is less than T1, and the charging interval is less than T1, and when A1 current potential is not up to the upper limit threshold voltage of Schmidt circuit F11, P1 becomes low electricity
Flat, A1 current potential is immediately turned into low level current potential, and A3 maintains low level state.In Fig. 5, the original state of P1 and A3 is low level.
The width of positive burst pulse the 11st, positive burst pulse the 12nd, positive burst pulse 13 is respectively less than T1, and A1 current potential cannot be charged to or more than Shi Mi
The upper limit threshold voltage of special circuit F11, does not affect on A3 state;The width of the positive pulse 14 of P1 is more than T1, therefore, P1's
After the rising edge of positive pulse 14 crosses time T1, A3 becomes high level from low level.The trailing edge of the positive pulse 14 of P1 makes A3 from height
Level becomes low level, and the width of the positive pulse 15 of P1 is more than T1, and after positive pulse 15 rising edge crosses time T1, A3 is from low level
Become high level.The trailing edge of P1 positive pulse 15 makes A3 become low level from high level, and the positive pulse of P1 the 16th, positive pulse is the 17th, just
The width of pulse 18 is respectively less than T1, and therefore, A3 is not affected by positive pulse the 16th, positive pulse the 17th, positive pulse 18, and A3 maintains low level
State.The width of the positive pulse 19 of P1 is more than T1, and after positive pulse 19 rising edge crosses time T1, A3 becomes high electricity from low level
Flat.
In Fig. 4, when switching pulse P1 is maintained low level for a long time, A2 point is high level, and Schmidt circuit F21's is defeated
Going out A4 is low level;When switching pulse P1 is maintained high level for a long time, A2 point is low level, and A4 is high level.Work as switch
Pulse P1 is when low level becomes high level, and the output A2 of current driver U21 is immediately turned into low level current potential, and A4 is immediately from low
Level becomes high level.When switching pulse P1 becomes low level from high level, A2 current potential is because of driving that current driver U21 exports
Streaming current charges to electric capacity C21 and rises, when charging between reach T2, A2 current potential rises the upper limit reaching Schmidt circuit F21
During threshold voltage, A4 becomes low level from high level;When the negative pulse width of P1 is less than T2, the charging interval is less than T2, A2 current potential
When not rising the upper limit threshold voltage reaching Schmidt circuit F21, P1 i.e. becomes high level, and A2 is immediately turned into low level current potential,
A4 maintains high level state.In Fig. 5, the original state of P1 and A4 is low level.The rising edge of the positive pulse 11 of P1 makes A4 from low
Level becomes high level, and the width of the negative pulse 20 of P1 is more than T2, and after negative pulse 20 trailing edge crosses time T2, A4 is from high level
Become low level.The rising edge of the positive pulse 12 of P1 makes A4 become high level from low level, the negative pulse of P1 the 20th, negative pulse 21
Width is respectively less than T2, and therefore, A4 is not affected by negative pulse the 20th, negative pulse 21, and A4 maintains low level state.The 23rd, negative pulse is born
The width of pulse the 24th, negative pulse the 25th, negative pulse 26 is respectively less than T2, and A2 current potential cannot be charged to or be higher than Schmidt circuit
The upper limit threshold voltage of F21, does not affect on A4 state;The width of the negative pulse 27 of P1 is more than T2, therefore, in the negative pulse of P1
After the trailing edge of 27 crosses time T2, A4 becomes low level from high level.At the rising edge of the negative pulse 27 of P1, A4 becomes from low level
For high level.
The output A3 of Schmidt circuit F11 keeps low level when switching pulse P1 is low level, switching pulse P1 by
Low level is crossed time T1 after becoming high level and is just become high level.The output A4 of Schmidt circuit F21 is height at switching pulse P1
Keep high level during level, after switching pulse P1 is become low level from high level, cross time T2 just become low level.In other words,
When A3 is high level, A4 must be high level;When A4 is low level, A3 must be low level.
In Fig. 5, the original state of A3, A4 is low level, and the output Y of data selector T11 is low level, and data select
It is to maintain low level period as output Y and at A3 that device T11 selects A3.When A3 becomes high level at edge 30 from low level
When, output Y becomes high level, and data selector T11 selects A4 as output Y, and now A4 must be high level, maintains output Y
High level state.When A4 becomes low level at edge 31 from high level, output Y becomes low level, and data selector T11 selects
Select A3 as output Y, now A3 must be low level, maintain export Y low level state.When A3 becomes from low level at edge 32
During for high level, output Y becomes high level, and data selector T11 selects A4 as output Y, and now A4 must be high level, dimension
Hold the high level state of output Y.
Anti-interference unit is by the 11st, the burst pulse of the burst pulse in P1 signal the 12nd, burst pulse the 13rd, burst pulse the 23rd, burst pulse the 24th, narrow arteries and veins
Punching the 25th, burst pulse 26 all filters out, and positive broad pulse 14 (includes positive pulse the 14th, positive pulse the 15th, positive pulse the 16th, positive pulse 17 and
Positive pulse 18, negative pulse the 23rd, negative pulse the 24th, negative pulse the 25th, negative pulse 26 is disturbing pulse), negative broad pulse 27 can pass through, make
M1 signal occurs corresponding positive broad pulse 28 and negative broad pulse 29.Control pulse M1 and switching pulse P1 homophase, and export
Broad pulse 28 rising edge is than positive broad pulse 14 rising edge T1 lag time, trailing edge T2 lag time of input.
Positive pulse the 11st, positive pulse the 12nd, positive pulse 13 is positive burst pulse, and wherein positive pulse 11 is disturbing pulse, and positive pulse is the 12nd,
Positive pulse 13 is continuous print switch contact Vibrating pulse.Time T1 is the maximum positive narrow pulse width that anti-interference unit can filter.
T1 is the positive charge time.Flowing out of T1 current driven device U11 drives size of current, the low electricity of current driver U11
Ordinary telegram position, electric capacity C11 size, the upper limit threshold voltage joint effect of Schmidt circuit F11.Under normal circumstances, the value of T1 is adjusted
Size of current and electric capacity C11 size can be driven to carry out by changing the outflow of current driver U11.
Negative pulse the 23rd, negative pulse the 24th, negative pulse the 25th, negative pulse 26, wherein negative pulse 23 is disturbing pulse, and negative pulse is the 24th,
Negative pulse the 25th, negative pulse 26 is continuous print switch contact Vibrating pulse.Time T2 is that the maximum that anti-interference unit can filter is born narrow
Pulse width.T2 is the reverse charging time.The outflow of T2 current driven device U21 drives size of current, current driver
The low level current potential of U21, electric capacity C21 size, the upper limit threshold voltage joint effect of Schmidt circuit F21.Under normal circumstances, adjust
The value of whole T2 can drive size of current and electric capacity C21 size to carry out by changing the outflow of current driver U21.
In Fig. 4, electric capacity C11 connects one end publicly can be with reconfiguration at Schmidt circuit F11, Schmidt circuit F21
Power supply end, i.e. reconfiguration are at DC supply+VCC;Similarly, electric capacity C21 connect one end publicly also can individually or
Person together with electric capacity C11 reconfiguration at DC supply+VCC.
In Fig. 4, Schmidt circuit F11, Schmidt circuit F21 can also simultaneously or separately select anti-phase Schmidt electricity
Road, can also be simultaneously or separately inverted relationship between input D1, D2 of data selector T11 and output Y.When Schmidt's electricity
Road F11, Schmidt circuit F21 simultaneously or separately select anti-phase Schmidt circuit, input D1, D2 of data selector T11 with
When between output Y simultaneously or separately for inverted relationship, need to meet following condition, it may be assumed that when data selector T11 exports Y
And for during with phase relation between Schmidt circuit F11 forward charge-discharge circuit input signal, data selector T11 exports Y and executes
It is inverted relationship between close special circuit F21 input signal;Now the low level control of Y selects the output of Schmidt circuit F11 to send
To the output of data selector T11, the high level control of Y selects the output of Schmidt circuit F21 to deliver to data selector T11
Output.When between data selector T11 output Y and Schmidt circuit F11 input signal for inverted relationship, data select
It is same phase relation between device T11 output Y and Schmidt circuit F21 input signal;Now the low level control of Y selects Schmidt's electricity
The output of data selector T11 is delivered in the output of road F21, and the high level control of Y selects the output of Schmidt circuit F11 to deliver to
The output of data selector T11.
Fig. 6 is forward current driver and reversing the current driver embodiment 1 circuit.Open-drain output driven in phase device F12,
Resistance R11 forms forward current driver.When P1 is low level, driven in phase device F12 output A1 is low level;P1 is high level
When, driven in phase device F12 is open-drain output, and power supply+VCC flows out through resistance R11 and drives electric current.
Open-drain output rp-drive F22, resistance R21 form reversing the current driver.When P1 is high level, anti-phase driving
Device F22 output A2 is low level;When P1 is low level, rp-drive F22 is open-drain output, and power supply+VCC flows through resistance R21
Go out to drive electric current.
Driven in phase device F12, rp-drive F22 can select the integrated circuit of various open collector, open-drain.
Fig. 7 is forward current driver and reversing the current driver embodiment 2 circuit.Triode V21, resistance R22, resistance
R23 forms reversing the current driver, when P1 is high level, triode V21 saturation conduction, and reversing the current driver output A2 is low
Level;When P1 is low level, triode V21 ends, and power supply+VCC flows out through resistance R22 and drives electric current.
Triode V11, triode V12, resistance R12, resistance R13, resistance R14 form forward current driver, and P1 is low
During level, triode V12 ends, triode V11 saturation conduction, and forward current driver output A1 is low level;P1 is high electricity
At ordinary times, triode V12 saturation conduction, triode V11 ends, and power supply+VCC flows out through resistance R12 and drives electric current.In Fig. 7 three
The negative circuit of pole pipe V12, resistance R14 composition also can be substituted by other phase inverters.
In Fig. 7, the outflow driving electric current that forward current driver and reversing the current driver provide not is constant size
Driving electric current.
Fig. 8 is forward current driver and reversing the current driver embodiment 3 circuit.Triode V25, triode V26, steady
Pressure pipe D25, resistance R25, resistance R26 form reversing the current driver, wherein, triode V26, voltage-stabiliser tube D25, resistance R25 group
Become reverse constant-current circuit.When P1 is high level, triode V25 saturation conduction, reversing the current driver output A2 is low level;P1
During for low level, triode V25 ends, and power supply+VCC flows out constant current through triode V26 and drives electric current.
Triode V15, triode V16, triode V17, voltage-stabiliser tube D15, resistance R15, resistance R16, resistance R17 just form
To current driver, wherein, triode V16, voltage-stabiliser tube D15, resistance R15 form forward constant-current circuit.When P1 is low level, three
Pole pipe V17 ends, triode V15 saturation conduction, and forward current driver output A1 is low level;When P1 is high level, three poles
Pipe V17 saturation conduction, triode V15 ends, and power supply+VCC flows out constant current through triode V16 and drives electric current.Triode in Fig. 8
The negative circuit of V17, resistance R17 composition also can be substituted by other phase inverters.
The anti-interference Schmidt circuit of described forward, reverse anti-interference Schmidt circuit are Schmidt circuit, input signal
For the voltage on electric capacity, it is therefore desirable to Schmidt circuit has high input impedance charcteristic.Schmidt circuit can select have height
Cmos schmitt phase inverter CD40106,74HC14 of input impedance characteristic, or select that there is high input impedance charcteristic
The devices such as cmos schmitt NAND gate CD4093,74HC24.Cmos schmitt phase inverter or cmos schmitt NAND gate upper
Limit threshold voltage is the fixed value related to device.Constitute homophase Schmidt electricity by schmitt inverter or Schmidt's NAND gate
Road, needs to increase one-level phase inverter 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.
Data selector can select the devices such as 74HC151,74HC152,74HC153, CD4512, CD4539 to constitute two choosings
One data selector, it is also possible to constitute alternative data selector with gate circuit.
When operating self-resetting switch, normal contact chatter time is less than 20ms, and normal switching pulse width
Degree is not less than 100ms;Interval between operation also will not be less than 100ms twice.Self-resetting switch in his ground control switch is complete
Portion is all connected in local control switch by long connecting line, it is possible to produce High-frequency Interference pulse.Anti-interference unit allows width
Positive pulse more than T1 and the undersuing more than T2 for the width are passed through, and therefore, the span of T1, T2 is 20ms extremely
100ms, when representative value all takes 50ms, can be effectively by the circuit High-frequency Interference of switch contact shaking interference and his ground control
Pulse filters.
Claims (5)
1. more than one kind, ground controls switch, it is characterised in that:
Including single live wire unit, holding unit, anti-interference unit and many ground switch element;
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,
Single fire wire output end, single live wire break-make control signal input and DC supply output;Described single live wire break-make controls
Module is made up of bidirectional thyristor on-off circuit;Described single live wire break-make control signal is the trigger of bidirectional thyristor;
Described holding unit is provided with single live wire break-make control signal output and control pulse input end;Described single live wire break-make
Control signal output is connected to single live wire break-make control signal input;
Described anti-interference unit is provided with control pulse output end and switching pulse input;Described control pulse output end is connected to
Control pulse input end;Described anti-interference unit includes forward charge-discharge circuit, reverse charge-discharge circuit, data selector;
Described many ground switch element is provided with switching pulse output, and described switching pulse output is connected to switching pulse input
End.
2. according to claim 1 how to control switch, it is characterised in that: described single live wire power getting module is for single fire
Line break-make control module and many ground switch element, holding unit, anti-interference unit offer DC supply;Described DC operation
The ground end of power supply is for single live wire break-make control module and many ground switch element, holding unit, anti-interference unit publicly.
3. according to claim 1 how to control switch, it is characterised in that: described many ground switch element includes 1 and 1
The self-resetting switch of more parallel, output switch pulse.
4. according to according to any one of claim 1-3, control switch manyly, it is characterised in that:
The input signal of described forward charge-discharge circuit and reverse charge-discharge circuit is switching pulse;
Described data selector is alternative data selector;Two data input pins of described data selector are respectively connecting to
Forward charge-discharge circuit, the output of reverse charge-discharge circuit;
The data output end of described data selector is control pulse ends;Described data selector is carried out data choosing by controlling pulse
Select control.
5. according to claim 4 how to control switch, it is characterised in that: described forward charge-discharge circuit includes forward electricity
Stream driver, forward anti-interference capacitor, the anti-interference Schmidt circuit of forward;The input of described forward current driver is forward
Charge-discharge circuit input, output is connected to forward anti-interference Schmidt circuit input;The one of described forward anti-interference capacitor
End is connected to forward anti-interference Schmidt circuit input, and other end is connected to publicly or DC supply;
Described reverse charge-discharge circuit includes reversing the current driver, reverse anti-interference capacitor, reverse anti-interference Schmidt circuit;
The input of described reversing the current driver is the input of reverse charge-discharge circuit, and output is connected to reverse anti-interference Schmidt
Circuit input end;One end of described reverse anti-interference capacitor is connected to reverse anti-interference Schmidt circuit input, other end
It is connected to publicly or DC supply;
Described forward anti-interference Schmidt circuit output is forward charge-discharge circuit output, reverse anti-interference Schmidt circuit
Output is reverse charge-discharge circuit output.
Priority Applications (1)
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CN201620578949.4U CN205681389U (en) | 2016-06-15 | 2016-06-15 | How one controls switch |
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CN201620578949.4U CN205681389U (en) | 2016-06-15 | 2016-06-15 | How one controls switch |
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Publication Number | Publication Date |
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CN205681389U true CN205681389U (en) | 2016-11-09 |
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CN201620578949.4U Expired - Fee Related CN205681389U (en) | 2016-06-15 | 2016-06-15 | How one controls switch |
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CN (1) | CN205681389U (en) |
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2016
- 2016-06-15 CN CN201620578949.4U patent/CN205681389U/en not_active Expired - Fee Related
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