CN202159608U - Antistatic device for elevator touch-sensitive button - Google Patents
Antistatic device for elevator touch-sensitive button Download PDFInfo
- Publication number
- CN202159608U CN202159608U CN2011202043234U CN201120204323U CN202159608U CN 202159608 U CN202159608 U CN 202159608U CN 2011202043234 U CN2011202043234 U CN 2011202043234U CN 201120204323 U CN201120204323 U CN 201120204323U CN 202159608 U CN202159608 U CN 202159608U
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- China
- Prior art keywords
- touch
- separator
- resistance
- elevator
- resistor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an antistatic device for an elevator touch-sensitive button, comprising an isolation disc, wherein the isolation disc is provided with two opposite metal surfaces which are isolated by an insulator, one metal surface is connected with one end of a third resistor, the other one metal surface is connected with one end of a first inductor, the other end of the first inductor is connected with a sensing disc and is grounded through a circuit in which a first resistor and a first diode are connected in parallel, and the other end of the third resistor is connected with a touch-sensitive detection chip; the insulator of the isolation disc is a printed circuit board, the two metal surfaces are copper foils laid on two surfaces of the printed circuit board; and one end of the third resistor is grounded after connected in series with a first capacitor and a second resistor, the second capacitor is connected in parallel with the touch-sensitive detection chip. The antistatic device of the utility model can eliminate human body static interference of the touch-sensitive button, and can release the high-voltage static timely and quickly, thereby avoiding damage of the button.
Description
Technical field
The utility model belongs to the elevator technology field, particularly a kind of anti-static device of elevator touch induction button.
Background technology
In the prior art, the touch-sensitive buttons of elevator can't effectively suppress and eliminate electrostatic interference in order to guarantee its induction sensitivity.Especially autumn and winter human body very easily produce under the situation of high-pressure electrostatic, be easy to cause the button cisco unity malfunction, in addition the damage.
The utility model content
The purpose of the utility model provides a kind of anti-static device of elevator touch induction button, can't anlistatig problem to solve existing touch-sensitive buttons.
The technical scheme of the utility model is; A kind of anti-static device of elevator touch induction button, this device comprises a separator, this separator has two relative metal coverings that insulated body is isolated; One of them metal covering is connected with an end of the 3rd resistance; Another metal covering links to each other with an end of first inductance, and the other end of said first inductance links to each other with an inductive disks and through the parallel circuits ground connection of first resistance and first diode, another termination one touch sensible detection chip of the 3rd resistance.
The insulator of said separator is a printed wiring board, and two metal coverings are the Copper Foils of two faces of printed wiring board of being laid in.
One end of described the 3rd resistance is connected in series ground connection behind first electric capacity and second resistance, and second electric capacity also connects described touch sensible detection chip.
The insulation thickness of separator is 1-3mm, and there is the above distance of 5mm tow sides metal covering and separator edge.
The static electricity on human body that the utility model is eliminated touch-sensitive buttons disturbs, and can discharge high-pressure electrostatic quickly, avoids causing the damage of button.Improve reliability of products, stability.
Description of drawings
Fig. 1 is an anti-static device circuit theory sketch map among the utility model one embodiment.
Embodiment
As shown in Figure 1; A kind of anti-static device of elevator touch induction button; This device comprises a separator P2; This separator P2 has two relative metal coverings that insulated body is isolated, and one of them metal covering is connected with an end of the 3rd resistance R 3, and another metal covering links to each other with an end of first inductance L 1; The other end of first inductance L 1 links to each other with an inductive disks P1 and through the parallel circuits ground connection of first resistance R 1 and the first diode D1, another termination one touch sensible detection chip U1 of the 3rd resistance R 3.This touch sensible detection chip U1 is used for touch-sensitive buttons action is detected, and for example can adopt single channel capacitance touch inductive switch chip QA100-CA6.The insulator of separator can be a printed wiring board, and two metal coverings are the Copper Foils of two faces of printed wiring board of being laid in.One end of the 3rd resistance R 3 is connected in series first capacitor C 1 and second resistance R, 2 back ground connection, and second capacitor C 2 also meets described touch sensible detection chip U1.
To the transformation of existing touch-sensitive buttons, between the inductive disks P1 and induction detection IC U1 of original touch-sensitive buttons, make a pcb board as separator P2.The pcb board tow sides have Copper Foil, but not conducting each other, one side is connected with IC circuit R3, and another side is connected with original inductive disks P1 through an inductance L 1.And between inductance L 1 and the inductive disks P1 and connect one and discharge a resistance R 1 and a release diode D1.R1 is connected with shell the earth GND with the D1 other end simultaneously.
After human body contacts with inductive disks, and static gets into through inductive disks P1,, make it can't get into induction IC U1 circuit the very first time, but be discharged into the earth GND via discharging resistance R 1 through the time-delay of L1 and the isolation of separator P2.If when having reverse static to get into, through D1 blocking-up and release.
This device has no influence to the operate as normal of touch-sensitive buttons, improves reliability of products, stability, and is simple in structure, with low cost.Press EN12016-2004 " Electro Magnetic Compatibility one elevator, escalator product line standard one vulnerability to jamming " standard-required and carry out 6KV contact discharge test, the test of 15KV atmospherical discharges, test is passed through.
This device can be separately independent with button, also can be incorporated in the monoblock printed board, and structure is more flexible.Separator can be a pcb board, also can be the plate of material that there are Copper Foil, mutual electric no electrically conducting in other two sides.According to the length of touch sensible distance and electrostatic high-pressure electric arc, the thickness of separator should be advisable at 1-3mm.And will there be the above distance of 5mm tow sides Copper Foil and separator edge.
Claims (4)
1. the anti-static device of elevator touch induction button; It is characterized in that this device comprises a separator, this separator has two relative metal coverings that insulated body is isolated; One of them metal covering is connected with an end of the 3rd resistance; Another metal covering links to each other with an end of first inductance, and the other end of said first inductance links to each other with an inductive disks and through the parallel circuits ground connection of first resistance and first diode, another termination one touch sensible detection chip of the 3rd resistance.
2. the anti-static device of elevator touch as claimed in claim 1 induction button is characterized in that the insulator of said separator is a printed wiring board, and two metal coverings are the Copper Foils of two faces of printed wiring board of being laid in.
3. the anti-static device of elevator touch as claimed in claim 1 induction button is characterized in that, an end of described the 3rd resistance is connected in series ground connection behind first electric capacity and second resistance, and second electric capacity also connects described touch sensible detection chip.
4. the anti-static device of elevator touch induction button as claimed in claim 1 is characterized in that the insulation thickness of separator is 1-3mm, and there is the above distance of 5mm tow sides metal covering and separator edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202043234U CN202159608U (en) | 2011-06-16 | 2011-06-16 | Antistatic device for elevator touch-sensitive button |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202043234U CN202159608U (en) | 2011-06-16 | 2011-06-16 | Antistatic device for elevator touch-sensitive button |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159608U true CN202159608U (en) | 2012-03-07 |
Family
ID=45767234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202043234U Expired - Fee Related CN202159608U (en) | 2011-06-16 | 2011-06-16 | Antistatic device for elevator touch-sensitive button |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202159608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039319A (en) * | 2018-08-13 | 2018-12-18 | 中科芯集成电路股份有限公司 | A kind of anti-interference capacitor formula touch key-press controller and implementation method |
-
2011
- 2011-06-16 CN CN2011202043234U patent/CN202159608U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039319A (en) * | 2018-08-13 | 2018-12-18 | 中科芯集成电路股份有限公司 | A kind of anti-interference capacitor formula touch key-press controller and implementation method |
| CN109039319B (en) * | 2018-08-13 | 2022-05-31 | 中科芯集成电路有限公司 | Anti-interference capacitive touch key controller and implementation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20120616 |