CN2240808Y - Piezo-electric sensing contact switch - Google Patents
Piezo-electric sensing contact switch Download PDFInfo
- Publication number
- CN2240808Y CN2240808Y CN 95219065 CN95219065U CN2240808Y CN 2240808 Y CN2240808 Y CN 2240808Y CN 95219065 CN95219065 CN 95219065 CN 95219065 U CN95219065 U CN 95219065U CN 2240808 Y CN2240808 Y CN 2240808Y
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- circuit unit
- circuit
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- Expired - Fee Related
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- 239000003990 capacitor Substances 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 230000007306 turnover Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 241000256844 Apis mellifera Species 0.000 description 1
- 241001481828 Glyptocephalus cynoglossus Species 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Electronic Switches (AREA)
Abstract
The utility model belongs to an electronic switch device, particularly a piezoelectric sensing contact switch. A piezoelectric sensor of the electronic switch is a piezoelectric buzzing sheet arranged on the inner surface of a cover cap of a switch box body; a circuit board in the box body is provided with an electronic circuit which comprises a signal acquisition circuit unit, a control circuit unit, a current guiding and switch circuit unit, a sharp pulse harmonic wave rectifier circuit unit and a power supply and indicating circuit unit. The piezoelectric sensing contact switch is connected in series to a zero line circuit of an appliance for normal work, and has the characteristics of no electric shock danger, stable and reliable work, small energy consumption, stronger anti-interference ability, etc.
Description
The utility model belongs to electronic switching device, is a kind of piezo-electric sensing contact switch.
Soft-touch control and induction type touch switch at present existing and electronic circuit arrangement pass through the electronic circuit control power circuit mostly by the electric signal of human body sensing break-make.The touch sheet of this contact witch and inductive switch generally places the outer surface of switch enclosure dignity plate, and it is relatively poor to exist fail safe, and is easy to wear poor with anti-interference, the not high deficiency of sensitivity.
The purpose of this utility model is to provide a kind of piezo-electric sensing contact switch.The piezoelectric transducer of this sensing touch switch is a piezoelectricity singing piece, place the inner surface of switch box body cover cap, and configuration interconnects the pressured electrical effect of the electronic circuit that forms by signal acquisition circuit unit, control circuit unit, current steering and switching circuit unit, spike harmonic wave rectification circuit unit and power supply and indicating circuit unit on the circuit board in box body, by the break-make of electronic circuit control power circuit.To overcome the existing in prior technology deficiency.
Overall structure of the present utility model is:
A kind of piezo-electric sensing contact switch is made up of the electronic circuit in box body and the installation box body, piezoelectric sensing substrate in the circuit sticks on the box body panel, it is characterized in that the circuit on the circuit board is interconnected to constitute by signal acquisition circuit unit (1), control circuit unit (2), electric current guiding and electronic switching circuit unit (3), spike harmonic wave rectification circuit unit (4) and power rectifier and indicating circuit unit (5); Wherein circuit unit (1) is by piezoelectricity singing piece HTD and connecting resistance R
1Constitute, circuit unit (2) serves as main formation with double D trigger IC chip, is divided into single, double steady-state circuit, 1,4,6,3,5,14 each pin of chip and the resistance R that is connected
2, capacitor C
1Be monostable circuit, 3 pin connect as the output of input with circuit unit (1), are connected across the resistance R between 1,4 pin
2With 1 pin be its output, 7,8,9,10,11,12,13 pin of IC chip are as bistable circuit, with 11 pin of IC chip, input and the output that 13 pin are this circuit; Circuit unit (3) is with two electronic switching device VS
1, VS
2Be interconnected to constitute, wherein VS
1Anode pass through resistance R
4Connect VS
2Anode, VS
1Anode and VS
2The control utmost point connect VS
1The control utmost point pass through resistance R
3Be connected VS with the output of circuit unit (2)
2Anode, negative electrode be the output of this circuit unit; Circuit unit (4) is by two crystal diode D
1, ZD be connected in series mutually the back with capacitor C
2And connect, dispose corresponding resistance R again
5, capacitor C
3And resistance R
6Constitute, with resistance R
6And resistance R
4Interface a be that its output connects with the input of circuit unit (5); Circuit unit (5) is main formation with the bridge rectifier, to be connected in parallel on the resistance R of rectification circuit output end
7, LED is its output, resistance R
7Connect with LED, the input of rectification circuit connects 220 volts of alternating current circuits; The capping of the box body of this touch switch (11) is made by transparent or semitransparent material, light-emitting diode body (9) in the circuit stretches into the interior piezoelectric transducer substrate of cap cover (6) (7) and sticks on the capping inner surface, and the touch switch adopts single line turnover mode to be serially connected in the zero line or live wire circuit of electrical appliance by the binding post (10) on the box bottom.
Selected transducer specification is:
Piezoelectric transducer HTD is a piezoelectricity singing piece, and its form factors can be selected φ 20mm for use, a kind of among φ 27mm or the φ 35mm.
The apolegamy of components and parts such as electronic switch, trigger is:
Electronic switching device is a thyristor, and double D trigger IC chip can be selected CD for use
40 13, crystal diode ZD is a voltage-stabiliser tube.
Accompanying drawing of the present utility model has:
Fig. 1 is piezoelectricity touch switching circuit figure.
Fig. 2 is a piezoelectricity touch construction of switch sketch.
Accompanying drawing has provided embodiment of the present utility model, further specifies as follows in conjunction with the accompanying drawings:
The box body (11) of this piezoelectricity touch switch adopts plastic material to make, and can make the multiple different size shape that is used to control desk lamp, bedside lamp and fluorescent lamp, electric fan break-make,
Being the switch box body of a kind of device on wall as shown in Figure 2, is other series of 86 series or GB regulation, and box bottom is installed wiring board (8).
Operation principle of the present utility model is:
1, provide circuit quiescent operation voltage: after this switch series inserted in the electrical appliance circuit, 220 volts of alternating currents were by crystal diode D
2～D
5The pulsating dc voltage of the bridge rectifier rectification output of group imposes on VS respectively
2Anode is through resistance R
7Make LED luminous indicator cock position after the current limliting and by R
6, R
5Step-down, crystal diode ZD cuts the width of cloth after crystal diode D
1, capacitor C
2Filtering provides level and smooth low-voltage DC to control circuit unit (2).
The off state of touch switch: when unmanned touch or nobody knock the box body panel, the output of piezoelectricity singing piece no current, circuit unit (2) monostable partly is in stable state, i.e. CD
40131 pin be electronegative potential, CD
4013Bistable state part output 13 pin also be electronegative potential, R
3Middle no current, thyristor VS
1Because of there not being trigger current to be in off state, thyristor VS
2The path of trigger current is turned off, VS
2Be in off state yet, cause circuit integral body to be turned off, the electrical appliance that is serially connected in AC power and this switch room is not worked.
The conducting state of touch switch: when touch switch enclosure surface by touch or when knocking, piezoelectricity singing piece is converted to electric current with pressure, this current trigger CD
4013Monostable circuit, its output 1 pin is produced goes out positive pulse temporarily, and then trigger CD
4013The bistable state part, making its output 13 pin is high potential, electric current is through resistance R
3Enter VS
1The control utmost point makes its conducting, and connects VS
2Gate trigger current makes thyristor VS
2The anode pulsating dc voltage is through resistance R
4, VS
1Anode, negative electrode to VS
2The control utmost point provides trigger current, when this electric current progressively increases to its trigger current value, with VS
1, VS
2Be that the main switching circuit unit of forming makes a point and the short circuit of c point, light-emitting diode extinguishes, AC power, bridge rectifier VS
2Form the loop with electrical appliance, electrical appliance is subjected to electricity work.Meanwhile, the capacitor C in the circuit unit (4)
2And crystal diode D
1Store electrical energy and reverse blocking effect kept the b point voltage, this has also guaranteed because of VS
1, VS
2Frequent shutoff and conducting and be that control circuit unit (2) provides stable operating voltage in the spike of a point generation.The resistance R that is in parallel in the circuit unit (4) in addition
5With capacitor C
3The higher harmonic components that also helps in the spike is passed through, through ZD and D
1Rectification C
2Filtering is to stablize b point operating voltage.This also is to make circuit unit (2) operate as normal, and to VS
1Constantly provide trigger current to guarantee the key of electrical appliance operate as normal.
The off state once more of touch switch: when lamp or other electrical appliances need turn-off again, knock or the touch box surface, piezoelectric buzzer produces current trigger CD once more
4013Monostable circuit, its output 1 pin is exported temporary stable state positive pulse and is triggered the bistable state part, make it recover initial steady state, its output 13 pin become electronegative potential by high potential, this electronegative potential turn-offs circuit unit (3), cut off the electrical appliance power supply circuits, the touch switch LED that restPoses is also luminous once more.
The obtained technological progress of the utility model is:
The piezo-electric effect of the main pressured electric buzzer of this piezo-electric sensing contact switch produces and triggers electricity Whether stream is subjected to electricity by circuit control electrical appliance in the box body, because piezoelectric buzzer is only to pressure Responsive and stick in cartridge inner surface, and can be serially connected in the zero line circuit and not only can lean on honeybee The interference of other spurious signals is got rid of in the bypass effect of the electric capacity in the ring sheet between garden and reed, and And avoided the incident human electric shock's phenomenon of other class soft-touch controls. Other circuit unit (3) effectively guaranteed the job stability of this electronic switch, and made the whole power consumption of circuit Littler. Circuit unit (2) can strengthen the ability that triggers big current thyristor, make this by Touch switch and can drive high power load such as 200 watts of incandescent lamps and two-tube 40 watts of fluorescent lamps.
The pulse harmonic wave rectification circuit unit that adopts utilizes the capacitive reactance of capacitor to raise with frequency And the characteristic that reduces can be control effectively under the littler condition in thyristor control angle Circuit unit provides stable operating voltage, has guaranteed simultaneously that also load has enough work electricity Press.
Claims (3)
1, a kind of piezo-electric sensing contact switch is made up of the electronic circuit in box body and the installation box body, piezoelectric sensing substrate in the circuit sticks on the box body panel, it is characterized in that the circuit on the circuit board is interconnected to constitute by signal acquisition circuit unit (1), control circuit unit (2), electric current guiding and electronic switching circuit unit (3), spike harmonic wave rectification circuit unit (4) and power rectifier and indicating circuit unit (5); Wherein circuit unit (1) is by piezoelectricity singing piece HTD and connecting resistance R
1Constitute, circuit unit (2) serves as main formation with double D trigger IC chip, is divided into single, double steady-state circuit, 1,4,6,3,5,14 each pin of chip and the resistance R that is connected
2, capacitor C
1Be monostable circuit, 3 pin connect as the output of input with circuit unit (1), are connected across the resistance R between 1,4 pin
2With 1 pin be its output, 7,8,9,10,11,12,13 pin of IC chip are as bistable circuit, with 11 pin of IC chip, input and the output that 13 pin are this circuit; Circuit unit (3) is with two electronic switching device VS
1, VS
2Be interconnected to constitute, wherein VS
1Anode pass through resistance R
4Connect VS
2Anode, VS
1Anode and VS
2The control utmost point connect VS
1The control utmost point pass through resistance R
3Be connected VS with the output of circuit unit (2)
2Anode, negative electrode be the output of this circuit unit; Circuit unit (4) is by two crystal diode D
1, ZD be connected in series mutually the back with capacitor C
2And connect, dispose corresponding resistance R again
5, capacitor C
3And resistance R
6Constitute, with resistance R
6And resistance R
4Interface a be that its output connects with the input of circuit unit (5); Circuit unit (5) is main formation with the bridge rectifier, to be connected in parallel on the resistance R of rectification circuit output end
7, LED is its output, resistance R
7Connect with LED, the input of rectification circuit connects 220 volts of alternating current circuits; The capping of the box body of this touch switch (11) is made by transparent or semitransparent material, light-emitting diode body (9) in the circuit overs in the cap cover (6), piezoelectric transducer substrate (7) sticks on the capping inner surface, and the touch switch adopts single line turnover mode to be serially connected in the zero line or live wire circuit of electrical appliance by the binding post (10) on the box bottom.
2, touch switch according to claim 1 and 2 is characterized in that piezoelectric transducer HTD is a piezoelectricity singing piece, and its form factors can be selected φ 20mm for use, a kind of among φ 27mm or the φ 35mm.
3, touch switch according to claim 1 and 2 is characterized in that electronic switching device is a thyristor, and double D trigger IC chip can be selected CD for use
4013, crystal diode ZD is a voltage-stabiliser tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95219065 CN2240808Y (en) | 1995-08-04 | 1995-08-04 | Piezo-electric sensing contact switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95219065 CN2240808Y (en) | 1995-08-04 | 1995-08-04 | Piezo-electric sensing contact switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2240808Y true CN2240808Y (en) | 1996-11-20 |
Family
ID=33867366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95219065 Expired - Fee Related CN2240808Y (en) | 1995-08-04 | 1995-08-04 | Piezo-electric sensing contact switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2240808Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877582A (en) * | 2010-06-22 | 2010-11-03 | 海洋王照明科技股份有限公司 | Single-button on-off control circuit |
| CN101444000B (en) * | 2006-05-12 | 2011-08-03 | E.G.O.电气设备制造股份有限公司 | Operating unit for domestic appliances |
| CN101861635B (en) * | 2007-10-23 | 2013-02-13 | 爱迪半导体株式会社 | Capacitive switch module |
-
1995
- 1995-08-04 CN CN 95219065 patent/CN2240808Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101444000B (en) * | 2006-05-12 | 2011-08-03 | E.G.O.电气设备制造股份有限公司 | Operating unit for domestic appliances |
| CN101861635B (en) * | 2007-10-23 | 2013-02-13 | 爱迪半导体株式会社 | Capacitive switch module |
| CN101877582A (en) * | 2010-06-22 | 2010-11-03 | 海洋王照明科技股份有限公司 | Single-button on-off control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |