CN203119866U - Zero-voltage type electronic touch switch - Google Patents
Zero-voltage type electronic touch switch Download PDFInfo
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- CN203119866U CN203119866U CN 201320041265 CN201320041265U CN203119866U CN 203119866 U CN203119866 U CN 203119866U CN 201320041265 CN201320041265 CN 201320041265 CN 201320041265 U CN201320041265 U CN 201320041265U CN 203119866 U CN203119866 U CN 203119866U
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Abstract
A zero-voltage type electronic touch switch comprises a bridge type rectification circuit, a switch circuit, a pulse trigger circuit, a pulse blockade circuit, a human body touch circuit and a direct current voltage stabilizing circuit. A zero-voltage detection and output circuit is inserted between the pulse trigger circuit and the pulse blockade circuit. Whether a switch is just triggered to be turned on or already in an on state, the electronic touch switch can ensure the switch in any state has an ideal state characterized by zero-voltage switching-on and zero-current switching-off. The zero-voltage type electronic touch switch can be used as a wall switch, a remote control switch and a corridor lamp time-delay switch.
Description
Technical field
The utility model relates to a kind of electronic touch switch, can be used as switch on wall, remote control switch, corridor lamp delay switch.
Background technology
The electronic touch switch mainly comprises bridge rectifier, switching circuit, pulsed triggering circuit, pulse blocking circuit, human body touch circuit and direct current regulation circuit etc., and human body is controlled the break-make of light fixture or electrical equipment even load circuit by touching sheet metal through touch circuit, pulsed triggering circuit, switching circuit.
There is following defective in the electronic touch switch of Chu Xianing in the market: 1, lack no-voltage control function, though the product operating state that has has the no-voltage function, start remains at random.So both can influence switch, lamp life, also be difficult to the test by EMC, influence products export; 2, the switch no-load current cold phosphere occurs greater than 100 μ A when the low power electricity-saving lamp of control and LED lamp; 3, lack the live wire identification function, the switch misconnection on ground wire, the danger that the maintenance that can occur turning off the light is got an electric shock; 4, exist electrochemical capacitor to influence working life and long-term reliability in the circuit; 5, complex structure, components and parts cost height.For all the foregoing reasons, had a strong impact on popularizing energetically and promoting of electronic touch switch.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of no-voltage control function that has is provided, and electric current, the voltge surge of switch are little, reliability height, the electronic touch switch that the life-span is long.
The technical scheme that the utility model adopts is: a kind of no-voltage type electronic touch switch, comprise bridge rectifier, switching circuit, pulsed triggering circuit, pulse blocking circuit, human body touch circuit and direct current regulation circuit, insert no-voltage testing circuit and no-voltage output circuit between described pulsed triggering circuit and the pulse blocking circuit, wherein, the no-voltage testing circuit is composed in series by first resistance and second resistance, and the no-voltage output circuit is made up of the first integrated inverter, the second integrated inverter, boost capacitor, driving resistance and reverse charging diode; The upper end of no-voltage testing circuit connects the anode of bridge rectifier, the direct ground connection in lower end, the input of mid point connecting to neutral voltage follower circuit (being the test side) through light-emitting diode; The output of no-voltage output circuit is connected with the control end of pulsed triggering circuit through boost capacitor and driving resistance.
The preferred following two kinds of circuit of described pulse blocking circuit: a kind of pulse blocking circuit is made up of integrated double D trigger and blockade diode, and also be provided with anti-interference and anti-twitter circuit between human body touch circuit and the pulse blocking circuit, anti-interference and anti-twitter circuit is by charging resistor, discharge resistance, discharge diode, first delay capacitor and the 3rd integrated inverter are formed, the output of integrated double D trigger is connected with the input of the first integrated inverter of no-voltage testing circuit through blocking diode, the output of the input termination human body touch circuit of anti-interference and anti-twitter circuit, its output is connected with the input of pulse blocking circuit.
The monostable circuit that another kind of pulse blocking circuit is made up of the 7th integrated inverter that has delay circuit is formed with the blockade diode, the input of the 7th integrated inverter is connected through the output of positive-negative-positive triode with the human body touch circuit, the output of the 7th integrated inverter is connected with the input of the first integrated inverter of no-voltage testing circuit through blocking diode, and the input of the 7th integrated inverter formed and inserted by delay circuit by second delay capacitor and time delay resistance.
For further improving this no-voltage type electronic touch switch performances, the further technical scheme of the utility model is: 1, for the pulse blocking circuit that adopts integrated double D trigger, also be connected to by the 4th electric capacity, the tenth resistance and the 6th integrated inverter and form the start clear circuit, the input of the 6th integrated inverter is connected with power supply through the tenth resistance, and the output of the 6th integrated inverter is connected with the R of integrated double D trigger end.2, described pulsed triggering circuit is made up of little triggering thyristor, voltage stabilizing didoe, filter capacitor, described switching circuit is the power scr circuit, the anode of little triggering thyristor connects the anode of bridge rectifier, negative electrode connects the gate pole of power scr, the right-hand member of the driving resistance of the gate leve connecting to neutral voltage follower circuit of little triggering thyristor through voltage stabilizing didoe.3, also have the live wire identification circuit, described live wire identification circuit is made up of sample resistance, the 5th integrated inverter and blockade diode, and its input is connected with live wire through sample resistance, and its output is connected with human body touch circuit control end through blocking diode.4, described direct current regulation circuit is made of jointly little triggering thyristor, voltage stabilizing didoe and filter capacitor in first resistance in the no-voltage testing circuit and the pulsed triggering circuit.
The beneficial effects of the utility model: no matter in switch triggering and conducting or be in conducting state just, this electronic touch switch can guarantee that any status switch is all in the perfect condition of no-voltage conducting, zero-current switching.The start clear circuit is set, and phenomenon misleads when sending a telegram here again after avoiding having a power failure.This electronic touch switch uses element few, the reliability height, and cost is low, and opens for the stochastic regime no-voltage and to facilitate, and the electric current of light fixture, electrical equipment, switch, voltge surge are reduced greatly, and the life-span prolongs greatly.
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Description of drawings
Fig. 1 is the electric theory diagram of the utility model embodiment 1.
Fig. 2 is the electrical schematic diagram of the utility model embodiment 1.
Fig. 3 is the voltage oscillogram at two ends under the resistive load electronic switch conducting state of embodiment 1.
Fig. 4 is the electric theory diagram of the utility model embodiment 2.
Fig. 5 is the electrical schematic diagram of the utility model embodiment 2.
Embodiment
Embodiment 1
As Fig. 1, Fig. 2, shown in Figure 3, the no-voltage type electronic touch switch of present embodiment, the switching circuit that comprises the bridge rectifier formed by rectifier cell Q1, formed by power scr Q3, pulsed triggering circuit, no-voltage testing circuit and no-voltage output circuit, pulse blocking and start clear circuit, live wire identification circuit, human body touch circuit and the direct current regulation circuit formed by little triggering thyristor Q2.Be provided with anti-interference and anti-twitter circuit between described human body touch circuit and the pulse blocking circuit.
Described no-voltage testing circuit and no-voltage output circuit place between pulsed triggering circuit and pulse blocking and the start clear circuit, wherein, the no-voltage testing circuit is composed in series by first resistance R 1 and second resistance R 2, and the no-voltage output circuit is made up of the first integrated inverter U1A, the second integrated inverter U1B, boost capacitor C2, driving resistance R 3 and reverse charging diode VD3.The upper end of no-voltage testing circuit connects the anode of bridge rectifier Q1, the direct ground connection in lower end, the input of mid point connecting to neutral voltage follower circuit (the 1st pin of the first integrated inverter U1A) through light-emitting diode VD2.This no-voltage sampling mode is the simplest, and is also reliable.The output of no-voltage output circuit (the 4th pin of the second integrated inverter U1B) is connected with the control end (gate pole of little triggering thyristor Q2) of pulsed triggering circuit through boost capacitor C2 and driving resistance R 3, when integrated inverter U1B is output as low level, power supply VCC charges to boost capacitor C2 through reverse charging diode VD3, driving resistance R 3, it is that the right side is just being born in a left side that boost capacitor C2 goes up polarity, when U1B is output as high level, voltage U C2 stack with on the boost capacitor C2 makes little triggering thyristor Q2 triggering and conducting with the voltage greater than power supply VCC.This output circuit is real be a kind of bootstrap circuit boost, and the use element is few, the reliability height, and cost is low, and opens for the stochastic regime no-voltage and to facilitate.
Described pulse blocking circuit is made up of integrated double D trigger U 2 and blockade diode VD4, and also be provided with anti-interference and anti-twitter circuit between human body touch circuit and the pulse blocking circuit, anti-interference and anti-twitter circuit is by charging resistor R4, discharge resistance R5, discharge diode VD5, the first delay capacitor C5 and the 3rd integrated inverter U1C form, the output of integrated double D trigger U 2 (the 2nd pin of U 2) is connected with the input (the 1st pin of U1A) of the first integrated inverter U1A of no-voltage output circuit through blocking diode VD4, the output (the 8th pin of the 4th integrated anti-phase U 1D) of the input termination human body touch circuit of anti-interference and anti-twitter circuit, its output (the 6th pin of the 3rd integrated inverter U1C) is connected with the input (integrated double D trigger U 2 the 3rd pin) of pulse blocking circuit.Characteristics anti-interference and anti-twitter circuit are: discharge resistance R5 resistance is much smaller than charging resistor R4, in case capacitor C 5 is discharged, need the time charging of 0.5 S approximately, therefore the output of U1C can keep certain hour constant, prevent shake in the touch process and the frequent break-make of generation switch, influence the life-span of switch and electrical equipment, and the harmful effect of electromagnetic interference.
Described start clear circuit is made up of the 4th capacitor C 4, the tenth resistance R 10 and the 6th integrated inverter U1F, the input of the 6th integrated inverter U1F (the 13rd pin of U1F) is connected with power supply VCC through the tenth resistance R 10, and the output of the 6th integrated inverter U1F (the 12nd pin of U1F) is connected with the R end (the 4th pin of U 2) of integrated double D trigger U 2.
Output high level when the effect of pulse blocking circuit is the electronic switch shutoff, locking pulse output.The effect of start clear circuit is that voltage is zero effect when relying on 4 starts of the 4th capacitor C, export high level to integrated double D trigger U 2 zero clearings through the 6th integrated inverter U1F, guarantee open state pulse blocking circuit output high level, can prevent that the unexpected scene that has a power failure is unmanned, bright lamp phenomenon when sending a telegram here again.Adopting the integrated d type flip flop U 2 in edge is that peripheral circuit is the simplest, reliability is high as the reason of bistable state reverse circuit.Power-on pulse is in blocked styate, because integrated d type flip flop U 2 ends are high level, therefore input, the output of no-voltage testing circuit are high level always, but because boost capacitor C 2 every straight effect, little triggering thyristor Q2 does not have operating current in the pulsed triggering circuit, and power scr Q3 is in closed condition.The advantage of this design is to guarantee that any status switch is all in the no-voltage conducting.Electronic switch touches the back upset, block diode VD4 after blocking releasing, when if the instantaneous absolute value of line voltage is high voltage, the no-voltage testing circuit is input as high level, and impulse output circuit output high level is constant, so no pulse, drop to zero until line voltage, after the boost capacitor C2 reverse charging, electrical network transient voltage absolute value rises to a less positive voltage again and just sends trigger impulse, guarantees near the conducting of no-voltage.Rush of current is little, can obviously reduce electromagnetic pollution, prolongs the life-span of switch, electrical equipment, light fixture; If after touching upset, the electrical network instantaneous voltage is close to zero, and this moment, the voltage negative sudden change did not produce positive triggering pulse, not conducting of little triggering thyristor Q2 yet, have only the absolute value of line voltage to rise to less positive voltage again and just send trigger impulse, remain zero voltage switch; After the power scr Q3 conducting, be equivalent to the switch short circuit, bridge rectifier is output as zero, and the first integrated inverter U1A is input as zero, the second integrated inverter U1B is output as zero, and boost capacitor C2 is reversed full charge, when line voltage zero passage or current over-zero, flow through power scr Q3 electric current less than keeping electric current I H, power scr Q3 automatically shuts down, so power scr Q3 turn-offs in zero current condition, the electromagnetic interference minimum also can not produce the overvoltage of transient state.Conducting again when the line voltage absolute value rises to a positive voltage again, again and again.Therefore, no matter in switch triggering and conducting or be in conducting state just, the electronic touch switch all is in the perfect condition of no-voltage conducting, zero-current switching.No-voltage type electronic touch switch ON state load two end oscillograms are seen shown in Figure 3.
Described pulsed triggering circuit is made up of little triggering thyristor Q2, voltage stabilizing didoe VD1, filter capacitor C1, described switching circuit is power scr Q3 circuit, the anode of little triggering thyristor Q2 connects the anode of rectification circuit Q1, negative electrode connects the gate pole of power scr Q3, the right-hand member of the driving resistance R 3 of the gate leve connecting to neutral voltage follower circuit of little triggering thyristor Q2 through voltage stabilizing didoe VD1.This circuit only can trigger power scr Q3 when the supply power voltage of DC power supply VCC surpasses the operating voltage of voltage stabilizing didoe VD1, guarantee the stable of direct current supply voltage.The firm conducting of circuits for triggering is only to charge to filter capacitor C1 in fact, when having only the last voltage of filter capacitor C1 to be slightly larger than voltage of voltage regulation, could flow through bigger trigger current at voltage stabilizing didoe VD1, in case power scr Q3 triggering and conducting, charging process finishes automatically, keeps small operating current by filter capacitor C1.Adopt power scr Q3 as switching circuit, compare with relay that action is fast, long, contactless, no-spark of life-span; Compare with power semiconductor GTR, MOSFET, IGBT that price is low, overload capacity is strong, realize that easily no-voltage is opened, zero-current switching.
Described direct current regulation circuit is made of jointly first resistance R 1 in the no-voltage testing circuit and little triggering thyristor Q2, voltage stabilizing didoe VD1 and the filter capacitor C1 in the pulsed triggering circuit.Electronic switch off-state (OFF), charged to power supply VCC by the diode of first resistance R 1 through the first integrated inverter U1A inside, electronic switch opening state (ON), charged to power supply VCC through little triggering thyristor Q2 by bridge rectifier Q1 positive output, voltage stabilizing didoe VD1 plays the supply power voltage effect of stabilized power supply VCC.This direct current regulation circuit is simple, and is low in energy consumption.
Described live wire identification circuit is made up of sample resistance R6, the 5th integrated inverter U 1E and blockade diode VD6, its input (the 11st pin of the 5th integrated inverter U 1E) is connected with live wire through sample resistance R6, and its output (the 10th pin of the 5th integrated inverter U 1E) is connected with human body touch circuit control end (the 9th pin of the 4th integrated inverter U 1D) through blocking diode VD6.The effect of live wire identification circuit is to work as the switch misconnection on ground wire N, and switch just can't be opened, the personal safety when guaranteeing to turn off the light operation.
Described human body touch circuit is formed by touching pin J2, the 4th integrated anti-phase U1D and anti-interference capacitor C7 and induced voltage sample resistance R9.
Embodiment 2
As Fig. 4, shown in Figure 5, present embodiment 2 has the bridge rectifier of being made up of rectifier cell Q1 among the embodiment 1, the switching circuit of being formed by power scr Q3, the pulsed triggering circuit of being formed by little triggering thyristor Q2, no-voltage detects and output circuit, the live wire identification circuit, human body touch circuit and direct current regulation circuit, difference is: described pulse blocking circuit is made up of with blockade diode VD4 the monostable circuit that the 7th integrated inverter U1G that has delay circuit forms, the input of the 7th integrated inverter U 1G (the 13rd pin of U 1G) is connected with the output (the 8th pin of the 4th integrated anti-phase U 1D) of human body touch circuit through positive-negative-positive triode Q4, the output of the 7th integrated inverter U1G (the 12nd pin of U1G) is connected with the input (the 1st pin of U1A) of the first integrated inverter U1A of no-voltage output circuit through blocking diode VD4, and the input (the 13rd pin of U 1G) of the 7th integrated inverter U 1G formed and inserted by delay circuit by the second delay capacitor C8 and time delay resistance R12.
Owing to adopt and can keep the monostable circuit of certain hour, so can save integrated double D trigger among the embodiment 1 (U 2) and switch start clear circuit and circuit such as anti-interference and anti-twitter circuit, further simplify circuit, reduce cost.
Claims (9)
1. no-voltage type electronic touch switch, comprise bridge rectifier, switching circuit, pulsed triggering circuit, the pulse blocking circuit, human body touch circuit and direct current regulation circuit, it is characterized in that: insert no-voltage testing circuit and no-voltage output circuit between described pulsed triggering circuit and the pulse blocking circuit, wherein, the no-voltage testing circuit is composed in series by first resistance (R1) and second resistance (R2), and the no-voltage output circuit is by the first integrated inverter (U1A), the second integrated inverter (U1B), boost capacitor (C2), driving resistance (R3) and reverse charging diode (VD3) forms; The upper end of no-voltage testing circuit connects the anode of bridge rectifier (Q1), the direct ground connection in lower end, the input of mid point connecting to neutral voltage follower circuit through light-emitting diode (VD2); The output of no-voltage output circuit is connected with the control end of pulsed triggering circuit through boost capacitor (C2) and driving resistance (R3).
2. no-voltage type electronic touch switch according to claim 1, it is characterized in that: described pulse blocking circuit is made up of integrated double D trigger (U 2) and blockade diode (VD4), and also be provided with anti-interference and anti-twitter circuit between human body touch circuit and the pulse blocking circuit, anti-interference and anti-twitter circuit is by charging resistor (R4), discharge resistance (R5), discharge diode (VD5), first delay capacitor (C5) and the 3rd integrated inverter (U1C) are formed, the output of integrated double D trigger (U 2) is connected with the input of the first integrated inverter (U1A) of no-voltage output circuit through blocking diode (VD4), the output of the input termination human body touch circuit of anti-interference and anti-twitter circuit, its output is connected with the input of pulse blocking circuit.
3. no-voltage type electronic touch switch according to claim 1, it is characterized in that: the monostable circuit that described pulse blocking circuit is made up of the 7th integrated inverter (U1G) that has delay circuit is formed with blockade diode (VD4), the input of the 7th integrated inverter (U 1G) is connected with the output of human body touch circuit through positive-negative-positive triode (Q4), the output of the 7th integrated inverter (U1G) is connected with the input of the first integrated inverter (U1A) of no-voltage output circuit through blocking diode (VD4), and the input of the 7th integrated inverter (U 1G) formed and inserted by delay circuit by second delay capacitor (C8) and time delay resistance (R12).
4. no-voltage type electronic touch switch according to claim 2, it is characterized in that: described pulse blocking circuit also is connected to the start clear circuit of being made up of the 4th electric capacity (C4), the tenth resistance (R10) and the 6th integrated inverter (U1F), the input of the 6th integrated inverter (U1F) is connected with power supply (VCC) through the tenth resistance (R10), and the output of the 6th integrated inverter (U1F) is connected with the R end of integrated double D trigger (U 2).
5. according to claim 1 or 2 or 3 or 4 described no-voltage type electronic touch switches, it is characterized in that: described pulsed triggering circuit is made up of little triggering thyristor (Q2), voltage stabilizing didoe (VD1), filter capacitor (C1), described switching circuit is power scr (Q3) circuit, the anode of little triggering thyristor (Q2) connects the anode of bridge rectifier (Q1), negative electrode connects the gate pole of power scr (Q3), the right-hand member of the driving resistance (R3) of the gate leve connecting to neutral voltage follower circuit of little triggering thyristor (Q2) through voltage stabilizing didoe (VD1).
6. no-voltage type electronic touch switch according to claim 5 is characterized in that: described direct current regulation circuit is made of jointly first resistance (R1) in the no-voltage testing circuit and little triggering thyristor (Q2), voltage stabilizing didoe (VD1) and filter capacitor (C1) in the pulsed triggering circuit.
7. according to claim 1 or 2 or 3 or 4 described no-voltage type electronic touch switches, it is characterized in that: also have the live wire identification circuit, described live wire identification circuit is made up of sample resistance (R6), the 5th integrated inverter (U 1E) and blockade diode (VD6), its input is connected with live wire through sample resistance (R6), and its output is connected with the control end of human body touch circuit through blocking diode (VD6).
8. no-voltage type electronic touch switch according to claim 5, it is characterized in that: also have the live wire identification circuit, described live wire identification circuit is made up of sample resistance (R6), the 5th integrated inverter (U 1E) and blockade diode (VD6), its input is connected with live wire through sample resistance (R6), and its output is connected with the control end of human body touch circuit through blocking diode (VD6).
9. no-voltage type electronic touch switch according to claim 6, it is characterized in that: also have the live wire identification circuit, described live wire identification circuit is made up of sample resistance (R6), the 5th integrated inverter (U 1E) and blockade diode (VD6), its input is connected with live wire through sample resistance (R6), and its output is connected with the control end of human body touch circuit through blocking diode (VD6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041265 CN203119866U (en) | 2013-01-25 | 2013-01-25 | Zero-voltage type electronic touch switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041265 CN203119866U (en) | 2013-01-25 | 2013-01-25 | Zero-voltage type electronic touch switch |
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| CN203119866U true CN203119866U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320041265 Expired - Fee Related CN203119866U (en) | 2013-01-25 | 2013-01-25 | Zero-voltage type electronic touch switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138729A (en) * | 2013-01-25 | 2013-06-05 | 温州大学 | No-voltage-type electronic touch switch |
| CN107248860A (en) * | 2017-02-28 | 2017-10-13 | 刘冰冰 | A kind of many control wall touch switch control circuits |
-
2013
- 2013-01-25 CN CN 201320041265 patent/CN203119866U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138729A (en) * | 2013-01-25 | 2013-06-05 | 温州大学 | No-voltage-type electronic touch switch |
| CN103138729B (en) * | 2013-01-25 | 2015-08-12 | 温州大学 | No-voltage-type electronic touch switch |
| CN107248860A (en) * | 2017-02-28 | 2017-10-13 | 刘冰冰 | A kind of many control wall touch switch control circuits |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20160125 |
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| EXPY | Termination of patent right or utility model |