CN207964709U - A kind of immersion detection sensor based on touch key IC - Google Patents
A kind of immersion detection sensor based on touch key IC Download PDFInfo
- Publication number
- CN207964709U CN207964709U CN201820461721.6U CN201820461721U CN207964709U CN 207964709 U CN207964709 U CN 207964709U CN 201820461721 U CN201820461721 U CN 201820461721U CN 207964709 U CN207964709 U CN 207964709U
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- key
- touch
- touch key
- immersion detection
- detection sensor
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Abstract
A kind of immersion detection sensor based on touch key IC of the utility model is related to immersion detection and technical field of integrated circuits, including circuit board, touch keyseat（Touch_Key）And capacitance type touch key（KEY）, conductive sponge, it is characterised in that：The circuit board includes galley, IC chip (U3) and outer member, the IC chip (U3), outer member and touch keyseat（Touch_Key）And the connection of capacitance type touch key (KEY) circuit, the conductive sponge are connect with touch key-press (KEY), the utility model uses touch key（Capacitance type touch key）This technology for being widely used in various electronic products, for replacing tradition machinery or resistance-type button, detection circuit is without directly contacting water, you can carry out immersion detection, have many advantages, such as it is frivolous it is beautiful, be quick on the draw, reliability height, service life it is long.
Description
Technical field
The utility model is related to detection and the technical field of integrated circuits of soaking, more particularly to are based on touch key-press integrated circuit
（touch key IC）Immersion detection sensor.
Background technology
Prior art immersion detecting instrument equipment, substitutes mechanical key using resistive touch button, is susceptible to sensitive
Spend it is low and the case where be not easily adjusted, it is inconvenient for operation, and the ability for tackling interference is weaker.
Utility model content
The utility model aim is, for above-mentioned immersion detecting instrument equipment there are the problem of, provide it is a kind of it is small,
Light-weight, low-power consumption, low cost, the immersion detection sensor based on touch key IC, the sensor use capacitance touch
Button single-chip microcomputer integrated circuit.
The above-mentioned technical problem of the utility model is mainly to be addressed by following technical proposals：
A kind of immersion detection sensor based on touch key IC, including circuit board, touch keyseat and capacitance touch
Button, conductive sponge, it is characterised in that：The circuit board includes galley, IC chip and outer member, the collection
It is pressed with touch at circuit chip, outer member and touch keyseat and capacitance type touch key circuit connection, the conductive sponge
Key connection.
The outer member includes capacitance one, capacitance two, resistance one, the resistance two of circuit connection.
The integrated circuit die I C, using BS83A02A-4 chips.
The pin5 of the integrated circuit die I C is connected to signal and touches keyseat and capacitance touch by series resistor one
Button.
Immersion detection sensor of the utility model based on touch key IC, using touch key（Capacitance touch is pressed
Key）This technology for being widely used in various electronic products, for replacing tradition machinery or resistance-type button, with a small amount of external member
Part can constitute capacitance type touch key IC single chip circuits, realize touch-control application, detection immersion, detection circuit is without directly connecing
Contact water, you can carry out immersion detection, have many advantages, such as it is frivolous it is beautiful, be quick on the draw, reliability is high, service life is long.
Description of the drawings
Fig. 1 is immersion detection sensor circuit diagram of the utility model based on touch key IC.
Specific implementation mode
All there is inductance capacitance between the object of any two conduction, an a button i.e. pad also can structure with the earth
At an inductance capacitance, in the case where ambient enviroment is constant, which is changeless small value.When there is human body
When finger is close to touch key-press, the inductance capacitance that human finger pad in parallel with the inductance capacitance that the earth is constituted is constituted with the earth,
Total induced electricity capacitance can be made to increase.Capacitance type touch key IC after the induced electricity capacitance for detecting some button changes,
The determination signal for some button will be exported being pressed, here it is the operation principles of touch key.
Signified immersion detection, is substantially exactly according to electrode end thereof contacts different medium in the utility model（Water is still
Air）, to generate different induced electricity capacitances, can detect that whether special survey object soaks according to this numerical value.
With reference to Fig. 1, the utility model is described in further detail：
1, the utility model is involved is based on touch key IC（Touch key-press IC）Immersion detection sensor, including circuit
Plate and IC chip (IC) touch keyseat Touch_Key, conductive sponge.
2, it touches keyseat (Touch Key Pad) Touch_Key and is equipped with capacitance type touch key KEY.
3, capacitance type touch key KEY is connected to device housings by conductive sponge, without directly contacting water.
4, the circuit board（Circuit）By galley（pcb）, IC and outer member connected and composed by circuit, it is only necessary to use
A small amount of outer member can constitute capacitance type touch key IC single chip circuits, realize that touch-control application, the outer member include
One c20 of capacitance, two c22 of capacitance, one R18 of resistance, two R19 of resistance.
5, the foot pin3/4 of IC connects 3V power supplys, ground wire respectively, power supply, ground wire indirect capacitance c22.
6, after two R19 of foot pin7 series resistors of IC, output immersion level signal Water DET, high level output indicates
Immersion.
7, after one R18 of foot pin5 series resistors of IC, Touch Key Pad and capacitance type touch key KEY are connected to, are received
Signal.
8, the chip of touch key IC uses Holtek and closes Thailand（Contain group's semiconductor）The BS83A02A-4 of 83 series
（U3 in circuit diagram) chip or other chips.
9, external circuit is used as I2C bus interface by TP4, TP5 contact interface, connects I2C buses, and the utility model passes
Sensor serves as I2C bus slaves, initiates start and stop and configuration-direct by I2C buses, configures parameter (such as detection sensitivity）, open
Dynamic, stopping detection.
10, after sensor receives stopping detection instruction, sensor enters standby mode, and external circuit can be by giving TP4
One level rising edge carrys out wake-up circuit.
In addition to the above, the utility model can also have other embodiment.It is every to use equivalent replacement or equivalent change
The technical solution to be formed is changed, the protection domain of the requires of the utility model is belonged to.
Claims (4)
1. a kind of immersion detection sensor based on touch key IC, including circuit board, touch keyseat（Touch_ Key）And
Capacitance type touch key（KEY）, conductive sponge, it is characterised in that：The circuit board includes galley, IC chip
(U3) and outer member, the IC chip (U3), outer member and keyseat is touched（Touch_Key）And capacitive touch
The connection of button (KEY) circuit is touched, the conductive sponge is connect with touch key-press (KEY).
2. a kind of immersion detection sensor based on touch key IC according to claim 1, it is characterised in that：It is described outer
Portion's element includes capacitance one (c20), capacitance two (c22), resistance one (R18), the resistance two (R19) of circuit connection.
3. a kind of immersion detection sensor based on touch key IC according to claim 1, it is characterised in that：The collection
At circuit chip (U3), using BS83A02A-4 chips.
4. a kind of immersion detection sensor based on touch key IC according to claim 3, it is characterised in that：The collection
At the pin5 of circuit chip (U3) by one R18 of series resistor, it is connected to signal and touches keyseat (Touch_Key) and capacitive touch
Touch button (KEY).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820461721.6U CN207964709U (en) | 2018-04-03 | 2018-04-03 | A kind of immersion detection sensor based on touch key IC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820461721.6U CN207964709U (en) | 2018-04-03 | 2018-04-03 | A kind of immersion detection sensor based on touch key IC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207964709U true CN207964709U (en) | 2018-10-12 |
Family
ID=63726874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820461721.6U Expired - Fee Related CN207964709U (en) | 2018-04-03 | 2018-04-03 | A kind of immersion detection sensor based on touch key IC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207964709U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333229A (en) * | 2018-04-03 | 2018-07-27 | 南京悠泳网络科技有限公司 | A kind of immersion detection sensor based on touch key IC |
-
2018
- 2018-04-03 CN CN201820461721.6U patent/CN207964709U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333229A (en) * | 2018-04-03 | 2018-07-27 | 南京悠泳网络科技有限公司 | A kind of immersion detection sensor based on touch key IC |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20190403 |