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CN104092456B - A kind of touching electronic switch - Google Patents

A kind of touching electronic switch Download PDF

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Publication number
CN104092456B
CN104092456B CN201410291470.8A CN201410291470A CN104092456B CN 104092456 B CN104092456 B CN 104092456B CN 201410291470 A CN201410291470 A CN 201410291470A CN 104092456 B CN104092456 B CN 104092456B
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circuit
integrated chip
resistor
voltage
pins
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CN201410291470.8A
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CN104092456A (en
Inventor
陈春华
杨显俊
郑伟
张月喜
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Zhejiang Songri Electric Co ltd
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Songri Electric Co Ltd
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Abstract

The invention discloses a kind of touching electronic switch, bridge rectifier including being arranged on input, the output end of the bridge rectifier is provided with power switch pipe, and the output end of the power switch pipe is connected to voltage-stabilized power supply circuit, and the voltage-stabilized power supply circuit is by resistance R1, commutation diode D5, voltage-regulator diode Dw and electric capacity C1Form;Characterized in that, also include the monostable circuit being made up of the first 1/2IC integrated chips, and the bistable circuit being made up of the 2nd 1/2IC integrated chips.The touching electronic switch circuit structure of the present invention is simple, and manufacturing cost is low, service life length, any spark will not be produced during its use, and security is higher, is easy to popularization to use.

Description

Touch electronic switch
Technical Field
The invention relates to a touch electronic switch, and belongs to the technical field of electronic switches.
Background
At present, a mechanical rocker (hereinafter referred to as a rocker switch) is basically used for driving a contact to be opened or closed in a wall switch for controlling a lighting lamp in a home, an office, a hotel or a school. In terms of building and decoration technologies, the switch wiring is very convenient, and no zero line is needed to enter the switch, which is exactly the difficulty of realizing electronization of the switch. Rocker switches, although widely used in various locations today, have their inherent drawbacks;
1. the wear and the spring fatigue caused by repeated actions lead to short service life of some middle and low-end products.
2. Poor contact quality caused by oxidation due to sparks is easy to cause poor contact, and even the service life of the lamp is affected.
3. The switch is not suitable for the situation with inflammable and explosive gas.
The other is a corridor touch type delay electronic switch, which is used as a control switch for short-time illumination in public places, the early mode of 'light control + touch delay' is commonly used, but each trigger can only last for a short time and can only be used in special occasions such as corridors and public toilets.
As shown in FIG. 1, which is a schematic circuit diagram of a touch type time-delay electronic switch in the prior art, it can be seen that there is only a few tenths of a volt drop across a silicon controlled rectifier MCR, and a chip 555 can only depend on C1The load current of a few milliamperes can only be maintained for a few seconds to a few minutes, and the light-operated lamp has no light-operated function, can only be used in special occasions of corridor lamps and public toilet lamps, and cannot meet the requirements of the household or office field.
Fig. 2 is a schematic circuit diagram of a touch switch controlled by a single-chip microcomputer in the prior art, in the diagram, a signal generated by a capacitive touch screen when a person touches the touch screen enters the single-chip microcomputer, the processed signal is sent to an output unit by a driving circuit, a thyristor or a relay is used for switching on the circuit, a DC-DC unit obtains voltage from a power supply and the output unit, and the voltage is boosted and converted and then supplied to each unit as a control unit, so that the scheme can realize multi-path output, but the circuit is complex, the cost is high, and the price is high (the market price of the single-path single-control is more than one; secondly, the DC-DC unit normally works under the condition that the input voltage cannot be too low, so that the power of the lamp cannot be too low (the index given by a manufacturer is more than 15W); the product is difficult to enter the families of common people, and the use place is greatly limited.
Disclosure of Invention
The invention aims to provide a touch type electronic switch aiming at the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the touch electronic switch comprises a bridge rectifier circuit arranged at an input end, wherein a power switch tube is arranged at an output end of the bridge rectifier circuit, an output end of the power switch tube is connected to a voltage-stabilized power supply circuit, and the voltage-stabilized power supply circuit is composed of a resistor R1Rectifier diode D5A voltage stabilizing diode Dw and a capacitor C1Is formed of a resistor R1One end is the input end of the voltage-stabilized power supply circuit, and the other end is connected with D5Negative electrode of (D)5The positive pole of the capacitor is connected with the positive pole of the Dw, the negative pole of the Dw is grounded, and the capacitor C1The positive pole of the Dw is the output end of the voltage-stabilized power supply circuit; the circuit is characterized by further comprising a monostable circuit formed by a first 1/2IC integrated chip and a bistable circuit formed by a second 1/2IC integrated chip; wherein,
the pin 1 of the first 1/2IC integrated chip is connected to the GND end of the circuit, and the pin 2 of the first 1/2IC integrated chip and the pin 14 thereof are connected to the positive end of the voltage-stabilized power supply circuit; the 3 pin of the first 1/2IC integrated chip passes through a resistor R2Connected to the touch contacts and passing through respective resistors R3Capacitor C2A GND terminal connected to the circuit; first 1/2IC integration4 pins of the chip pass through a capacitor C3A GND terminal connected to the circuit;
the 8 pins of the second 1/2IC integrated chip are connected with the 12 pins thereof; the 9 pin of the second 1/2IC integrated chip passes through a resistor R5Connected to the control electrode of the power switch tube and simultaneously passing through a capacitor C4A GND terminal connected to the circuit; and pins 7, 10 and 13 of the second 1/2IC integrated chip are all connected to the GND end of the circuit; the 11 pins of the second 1/2IC chip are connected with the 5 pins of the first 1/2IC chip via a resistor R4And is connected with the 4 pins of the first 1/2IC integrated chip.
Further, the night switch indicating circuit is also included and is composed of a resistor RbAnd a light emitting diode D6Are connected in series to form the resistor RbIs connected to the resistor R1And a diode D5At a node of, the light emitting diode D6Is connected to the GND terminal of the circuit.
The invention has the beneficial effects that: the touch electronic switch circuit has the advantages of simple structure, low manufacturing cost, long service life, no spark generation in the using process, higher safety and convenience for popularization and use.
Drawings
Fig. 1 is a schematic circuit diagram of a touch type time-delay electronic switch for a corridor in the prior art.
Fig. 2 is a schematic circuit diagram of a touch switch controlled by a single chip in the prior art.
Fig. 3 is a schematic circuit diagram of an embodiment of the touch electronic switch of the present invention.
Detailed Description
FIG. 3 shows a touch type electronic switch, a touchThe touch type electronic switch comprises a bridge rectifier circuit arranged at an input end, wherein a power switch tube is arranged at an output end of the bridge rectifier circuit, an output end of the power switch tube is connected to a voltage-stabilized power supply circuit, and the voltage-stabilized power supply circuit is composed of a resistor R1Rectifier diode D5A voltage stabilizing diode Dw and a capacitor C1Is formed of a resistor R1One end is the input end of the voltage-stabilized power supply circuit, and the other end is connected with D5Negative electrode of (D)5The positive pole of the capacitor is connected with the positive pole of the Dw, the negative pole of the Dw is grounded, and the capacitor C1The positive pole of the Dw is the output end of the voltage-stabilized power supply circuit; the circuit is characterized by further comprising a monostable circuit formed by a first 1/2IC integrated chip and a bistable circuit formed by a second 1/2IC integrated chip; wherein,
the pin 1 of the first 1/2IC integrated chip is connected to the GND end of the circuit, and the pin 2 of the first 1/2IC integrated chip and the pin 14 thereof are connected to the positive end of the voltage-stabilized power supply circuit; the 3 pin of the first 1/2IC integrated chip passes through a resistor R2Connected to the touch contacts and passing through respective resistors R3Capacitor C2A GND terminal connected to the circuit; 4-pin pass capacitor C of first 1/2IC integrated chip3A GND terminal connected to the circuit;
the 8 pins of the second 1/2IC integrated chip are connected with the 12 pins thereof; the 9 pin of the second 1/2IC integrated chip passes through a resistor R5The control electrode is connected to the control electrode of the power switch tube, and is connected to the GND end of the circuit through a capacitor C4; and pins 7, 10 and 13 of the second 1/2IC integrated chip are all connected to the GND end of the circuit; the 11 pins of the second 1/2IC chip are connected with the 5 pins of the first 1/2IC chip via a resistor R4And is connected with the 4 pins of the first 1/2IC integrated chip.
The touch electronic switch also comprises a night switch indicating circuit and a night switch indicating circuit which is composed of a resistor RbAnd a light emitting diode D6Are connected in series to form the resistor RbIs connected to the resistor R1And a diode D5At a node of, the light emitting diode D6Is connected to the GND terminal of the circuit. Therefore, the phenomenon of 'twinkling' in the lamp tube under the closed state when the energy-saving lamp is used can be avoided.
In operation, 220V AC power is supplied through diode D1—D4The bridge rectifier is converted into DC voltage and is connected to resistor R1And a diode D5Capacitor C in filter circuit to regulated power supply circuit1Charging, wherein the zener diode Dw is used to limit the voltage to a certain operating voltage value.
When the capacitance C1When the voltage value is not less than 4v, the IC chip unit enters a working state, when a person touches a hand touch contact, 5 pins of the first 1/2IC integrated chip output high level, so that 9 pins of the second 1/2IC integrated chip output high level, the high level is sent to a control electrode of the power tube through a resistor R5, the power tube is conducted, and the lamp is lightened. Although the high level of the 5 pin of the first 1/2IC integrated chip passes through the resistor R4Capacitor C3The voltage of the lamp is kept in a bright state until the bistable circuit is touched for the second time, the 5 pin of the first 1/2IC integrated chip outputs a high level again, the 11 pin of the second 1/2IC integrated chip overturns after receiving the high level, and the 9 pin of the second 1/2IC integrated chip outputs a low level to turn off the lighting lamp.
The invention is an environment-friendly product with high-efficiency operation, the efficiency is more than 99.7 percent when the product works, and the power consumption of the load is about 5 × 10 when the product is closed-6W (power consumption of indicator light); and low-power components are used, so that the lighting state can be maintained for more than 10 hours after the touch, and the use in families and office environments can be met.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (2)

1. The touch electronic switch comprises a bridge rectifier circuit arranged at an input end, wherein a power switch tube is arranged at an output end of the bridge rectifier circuit, an output end of the power switch tube is connected to a voltage-stabilized power supply circuit, and the voltage-stabilized power supply circuit is composed of a resistor R1Rectifier diode D5A voltage stabilizing diode Dw and a capacitor C1Is formed of a resistor R1One end is the input end of the voltage-stabilized power supply circuit, and the other end is connected with D5Negative electrode of (D)5The positive pole of the capacitor is connected with the positive pole of the Dw, the negative pole of the Dw is grounded, and the capacitor C1In parallel with Dw, positive of DwThe electrode is the output end of a voltage-stabilized power supply circuit; the circuit is characterized by further comprising a monostable circuit formed by a first 1/2IC integrated chip and a bistable circuit formed by a second 1/2IC integrated chip; wherein,
the pin 1 of the first 1/2IC integrated chip is connected to the GND end of the circuit, and the pin 2 of the first 1/2IC integrated chip and the pin 14 thereof are connected to the positive end of the voltage-stabilized power supply circuit; the 3 pin of the first 1/2IC integrated chip passes through a resistor R2Connected to the touch contacts and passing through respective resistors R3Capacitor C2A GND terminal connected to the circuit; 4-pin pass capacitor C of first 1/2IC integrated chip3A GND terminal connected to the circuit;
the 8 pins of the second 1/2IC integrated chip are connected with the 12 pins thereof; the 9 pin of the second 1/2IC integrated chip passes through a resistor R5Connected to the control electrode of the power switch tube and simultaneously passing through a capacitor C4A GND terminal connected to the circuit; and pins 7, 10 and 13 of the second 1/2IC integrated chip are all connected to the GND end of the circuit; the 11 pins of the second 1/2IC chip are connected with the 5 pins of the first 1/2IC chip via a resistor R4And is connected with the 4 pins of the first 1/2IC integrated chip.
2. The touch-sensitive electronic switch of claim 1, further comprising a night switch indicator circuit formed by a resistor RbAnd a light emitting diode D6Are connected in series to form the resistor RbIs connected to the resistor R1And a diode D5At a node of, the light emitting diode D6Is connected to the GND terminal of the circuit.
CN201410291470.8A 2014-06-25 2014-06-25 A kind of touching electronic switch Active CN104092456B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410291470.8A CN104092456B (en) 2014-06-25 2014-06-25 A kind of touching electronic switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410291470.8A CN104092456B (en) 2014-06-25 2014-06-25 A kind of touching electronic switch

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CN104092456A CN104092456A (en) 2014-10-08
CN104092456B true CN104092456B (en) 2017-12-12

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107148116A (en) * 2017-06-24 2017-09-08 佛山市德新科技孵化器有限公司 A kind of LED adjusts controller circuitry

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2692920Y (en) * 2004-04-26 2005-04-13 崔润平 Touch type contactless switch
CN103389663A (en) * 2013-06-27 2013-11-13 何林 Timing switch of touch electric kettle
CN204068917U (en) * 2014-06-25 2014-12-31 金坛市龙京光电照明工程有限公司 A kind of touching electronic switch

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Inventor after: Chen Chunhua

Inventor after: Yang Xianjun

Inventor after: Zheng Wei

Inventor after: Zhang Yuexi

Inventor before: Jiang Tieniu

Inventor before: Chen Mingjun

Inventor before: Du Li

CB03 Change of inventor or designer information
TA01 Transfer of patent application right

Effective date of registration: 20171016

Address after: 325000 Zhejiang province Wenzhou city Longwan District Haicheng Street Luo Mei Avenue 133

Applicant after: SONGRI ELECTRIC Co.,Ltd.

Address before: 213200, 98, Hua Cheng Dong Road, Jintan, Jiangsu, Changzhou

Applicant before: JINTAN LONGJING PHOTOELECTRIC LIGHTING ENGINEERING Co.,Ltd.

TA01 Transfer of patent application right
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Effective date of registration: 20220830

Address after: No. 389, Jinhai Avenue, Xinghai Street, Economic and Technological Development Zone, Wenzhou City, Zhejiang Province, 325000

Patentee after: Zhejiang Songri Electric Co.,Ltd.

Address before: No. 133, Luomei Avenue, Haicheng Street, Longwan District, Wenzhou City, Zhejiang Province, 325000

Patentee before: SONGRI ELECTRIC Co.,Ltd.

TR01 Transfer of patent right