CN108333229A - 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
- CN108333229A CN108333229A CN201810291222.1A CN201810291222A CN108333229A CN 108333229 A CN108333229 A CN 108333229A CN 201810291222 A CN201810291222 A CN 201810291222A CN 108333229 A CN108333229 A CN 108333229A
- Authority
- CN
- China
- Prior art keywords
- key
- touch
- touch key
- water immersion
- immersion detection
- Prior art date
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000007654 immersion Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003990 capacitor Substances 0.000 description 6
- 230000001939 inductive effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/228—Circuits therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Push-Button Switches (AREA)
Abstract
本发明一种基于touch key IC的浸水检测传感器涉及浸水检测和集成电路技术领域，包括电路板、触摸键座（Touch_Key）及电容式触摸按键（KEY）、导电海绵,其特征在于：所述电路板包括印刷版、集成电路芯片(U3)和外部元件,所述集成电路芯片(U3)、外部元件以及触摸键座（Touch_Key）及电容式触摸按键(KEY)电路连接，所述导电海绵与触摸按键(KEY)连接，本发明采用touch key（电容式触摸按键）这种广泛应用于各种电子产品的技术，用于代替传统机械或电阻式按键，检测电路无需直接接触到水，即可进行浸水检测，具有轻薄美观、反应灵敏、可靠性高、使用寿命长等优点。
The invention relates to a water immersion detection sensor based on a touch key IC, which relates to the field of water immersion detection and integrated circuit technology, including a circuit board, a touch key base (Touch_Key), a capacitive touch key (KEY), and a conductive sponge, and is characterized in that: the circuit The board includes a printing plate, an integrated circuit chip (U3) and external components, and the integrated circuit chip (U3), external components, touch key base (Touch_Key) and capacitive touch key (KEY) circuit connection, the conductive sponge and touch Button (KEY) connection, the present invention adopts touch key (capacitive touch button), which is widely used in various electronic products, to replace traditional mechanical or resistive buttons, and the detection circuit can be operated without direct contact with water. Water immersion detection has the advantages of light and thin appearance, sensitive response, high reliability and long service life.
Description
技术领域technical field
本发明涉及浸水检测和集成电路技术领域，尤其涉及基于触摸按键集成电路（touch key IC）的浸水检测传感器。The invention relates to the field of water immersion detection and integrated circuit technology, in particular to a water immersion detection sensor based on a touch key integrated circuit (touch key IC).
背景技术Background technique
现有技术浸水检测仪器设备，采用电阻式触摸按键替代机械按键，容易出现灵敏度低及不容易调整的情况，操作不方便，且对付干扰的能力较弱。The existing water immersion detection equipment uses resistive touch buttons instead of mechanical buttons, which is prone to low sensitivity and difficult adjustment, inconvenient operation, and weak ability to deal with interference.
发明内容Contents of the invention
本发明目的在于，针对上述浸水检测仪器设备存在的问题，提供一种体积小、重量轻、低功耗、低成本、基于touch key IC的浸水检测传感器，该传感器采用电容式触摸按键单片机集成电路。The purpose of the present invention is to provide a water immersion detection sensor with small volume, light weight, low power consumption, low cost, and based on touch key IC for the problems existing in the above-mentioned water immersion detection equipment. The sensor adopts a capacitive touch key single-chip integrated circuit .
本发明的上述技术问题主要是通过下述技术方案得以解决的：Above-mentioned technical problem of the present invention is mainly solved by following technical scheme:
一种基于touch key IC的浸水检测传感器，包括电路板、触摸键座及电容式触摸按键、导电海绵, 其特征在于：所述电路板包括印刷版、集成电路芯片和外部元件,所述集成电路芯片、外部元件以及触摸键座及电容式触摸按键电路连接，所述导电海绵与触摸按键连接。A water immersion detection sensor based on a touch key IC, including a circuit board, a touch key base, a capacitive touch key, and a conductive sponge, characterized in that: the circuit board includes a printed plate, an integrated circuit chip and external components, and the integrated circuit The chip, the external components, the touch key base and the capacitive touch key circuit are connected, and the conductive sponge is connected with the touch key.
所述外部元件包括电路连接的电容一、电容二、电阻一、电阻二。The external components include capacitor 1, capacitor 2, resistor 1, and resistor 2 connected by circuits.
所述集成电路芯片IC，采用BS83A02A-4芯片。The integrated circuit chip IC adopts BS83A02A-4 chip.
所述集成电路芯片IC的pin5通过串接电阻一，连到到信号触摸键座及电容式触摸按键。The pin5 of the integrated circuit chip IC is connected to the signal touch key base and the capacitive touch key through a serial connection of resistor one.
本发明基于touch key IC的浸水检测传感器,采用touch key（电容式触摸按键）这种广泛应用于各种电子产品的技术，用于代替传统机械或电阻式按键，用少量外部元件便可构成电容式触摸按键IC单片机电路，实现触控应用，检测浸水，检测电路无需直接接触到水，即可进行浸水检测，具有轻薄美观、反应灵敏、可靠性高、使用寿命长等优点。The water immersion detection sensor based on the touch key IC of the present invention adopts touch key (capacitive touch key), a technology widely used in various electronic products, to replace traditional mechanical or resistive keys, and a small amount of external components can be used to form a capacitor Type touch button IC single-chip microcomputer circuit, realize touch application, detect water immersion, the detection circuit can perform water immersion detection without direct contact with water, has the advantages of light and thin appearance, sensitive response, high reliability, and long service life.
附图说明Description of drawings
图1为本发明基于touch key IC的浸水检测传感器电路原理图；Fig. 1 is the circuit schematic diagram of the water immersion detection sensor based on touch key IC of the present invention;
具体实施方式Detailed ways
任何两个导电的物体之间都存在着感应电容，一个按键即一个焊盘与大地也可构成一个感应电容，在周围环境不变的情况下，该感应电容值是固定不变的微小值。当有人体手指靠近触摸按键时，人体手指与大地构成的感应电容并联焊盘与大地构成的感应电容，会使总感应电容值增加。电容式触摸按键IC在检测到某个按键的感应电容值发生改变后，将输出某个按键被按下的确定信号，这就是touch key的工作原理。There is an inductive capacitance between any two conductive objects. A button, that is, a pad and the ground can also form an inductive capacitance. When the surrounding environment remains unchanged, the inductive capacitance is a fixed and small value. When a human finger is close to the touch button, the sensing capacitance formed by the human finger and the ground is connected in parallel with the sensing capacitance formed by the pad and the ground, which will increase the total sensing capacitance. After the capacitive touch key IC detects that the inductive capacitance value of a key has changed, it will output a confirmation signal that a certain key is pressed, which is the working principle of the touch key.
本发明中所指的浸水检测，本质上就是根据电极一端接触不同介质（水或是空气），从而产生不同的感应电容值，根据此数值即可检测出特测物是否浸水。The water immersion detection referred to in the present invention essentially means that one end of the electrode is in contact with different media (water or air), thereby generating different inductive capacitance values, which can be used to detect whether the object under test is immersed in water.
下面结合图1对本发明作进一步说明：Below in conjunction with Fig. 1, the present invention will be further described:
1、本发明所涉基于touch key IC（触摸按键IC）的浸水检测传感器，包括电路板及集成电路芯片(IC)、触摸键座Touch_Key、导电海绵。1. The water immersion detection sensor based on touch key IC (touch key IC) involved in the present invention includes a circuit board, an integrated circuit chip (IC), a touch key base Touch_Key, and a conductive sponge.
2、触摸键座(Touch Key Pad)Touch_Key设有电容式触摸按键KEY。2. Touch Key Pad (Touch Key Pad) Touch_Key is equipped with a capacitive touch key KEY.
3、电容式触摸按键KEY通过导电海绵连接到设备外壳，无需直接接触到水。3. The capacitive touch button KEY is connected to the device shell through a conductive sponge, without direct contact with water.
4、所述电路板（电路）由印刷版（pcb）、IC和外部元件通过电路连接构成，只需要用少量外部元件便可构成电容式触摸按键IC单片机电路，实现触控应用，所述外部元件包括电容一c20、电容二c22、电阻一R18、电阻二R19。4. The circuit board (circuit) is composed of a printed board (pcb), IC and external components connected through a circuit. Only a small number of external components can be used to form a capacitive touch button IC single-chip microcomputer circuit to realize touch applications. The external The components include capacitor one c20, capacitor two c22, resistor one R18, and resistor two R19.
5、IC的脚pin3/4分别接3V电源、地线，电源、地线之间接电容c22。5. Pin3/4 of the IC are respectively connected to 3V power supply and ground wire, and capacitor c22 is connected between power supply and ground wire.
6、IC的脚pin7串接电阻二R19后，输出浸水电平信号Water DET，高电平输出表示浸水。6. After the pin 7 of the IC is connected in series with the resistor 2 R19, it outputs the water-immersion level signal Water DET, and the high-level output indicates water immersion.
7、IC的脚pin5串接电阻一R18后，连到Touch Key Pad及电容式触摸按键KEY，接受信号。7. After the pin 5 of the IC is connected in series with a resistor R18, it is connected to the Touch Key Pad and the capacitive touch button KEY to receive the signal.
8、touch key IC的芯片，采用了Holtek合泰（盛群半导体）83系列的BS83A02A-4（电路原理图中U3)芯片或其他芯片。8. The chip of the touch key IC adopts Holtek (Holtek Semiconductor) 83 series BS83A02A-4 (U3 in the circuit schematic diagram) chip or other chips.
9、外部电路通过TP4、TP5触点接口作为I2C总线接口，连接I2C总线，本发明传感器充当I2C总线从设备，通过I2C总线发起启停及配置指令，配置参数(如检测灵敏度）、启动、停止检测。9. The external circuit is connected to the I2C bus through the TP4 and TP5 contact interfaces as the I2C bus interface. The sensor of the present invention acts as an I2C bus slave device, and initiates start-stop and configuration instructions through the I2C bus, configuration parameters (such as detection sensitivity), start and stop detection.
10、当传感器收到停止检测指令后，传感器进入待机状态，外部电路可通过给TP4一个电平上升沿来唤醒电路。10. When the sensor receives the stop detection command, the sensor enters the standby state, and the external circuit can wake up the circuit by giving TP4 a rising edge.
除以上所述外，本发明还可以有其它实施方式。凡是采用等同替换或等效变换形成的技术方案，均属于本发明要求的保护范围。In addition to the above, the present invention can also have other embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291222.1A CN108333229A (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 |
|---|---|---|---|
| CN201810291222.1A CN108333229A (en) | 2018-04-03 | 2018-04-03 | A kind of immersion detection sensor based on touch key IC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108333229A true CN108333229A (en) | 2018-07-27 |
Family
ID=62933868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810291222.1A Pending CN108333229A (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) | CN108333229A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111694058B (en) * | 2019-03-14 | 2021-07-13 | 松拓公司 | Dive computer coupled with antenna and water contact components |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063234A (en) * | 2010-12-17 | 2011-05-18 | 宝丽雅智能系统(深圳)有限公司 | Capacitive touch inductive button control panel with vibration feedback function |
| CN203747774U (en) * | 2014-03-19 | 2014-07-30 | 广东美的制冷设备有限公司 | Touch key |
| CN105222856A (en) * | 2015-09-16 | 2016-01-06 | 佛山市美的清湖净水设备有限公司 | Water level detection device and water purification unit |
| CN106930618A (en) * | 2017-05-17 | 2017-07-07 | 吴雪 | intelligent lock core control system and method |
| CN207964709U (en) * | 2018-04-03 | 2018-10-12 | 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 CN201810291222.1A patent/CN108333229A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063234A (en) * | 2010-12-17 | 2011-05-18 | 宝丽雅智能系统(深圳)有限公司 | Capacitive touch inductive button control panel with vibration feedback function |
| CN203747774U (en) * | 2014-03-19 | 2014-07-30 | 广东美的制冷设备有限公司 | Touch key |
| CN105222856A (en) * | 2015-09-16 | 2016-01-06 | 佛山市美的清湖净水设备有限公司 | Water level detection device and water purification unit |
| CN106930618A (en) * | 2017-05-17 | 2017-07-07 | 吴雪 | intelligent lock core control system and method |
| CN207964709U (en) * | 2018-04-03 | 2018-10-12 | 南京悠泳网络科技有限公司 | A kind of immersion detection sensor based on touch key IC |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111694058B (en) * | 2019-03-14 | 2021-07-13 | 松拓公司 | Dive computer coupled with antenna and water contact components |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI774535B (en) | Touch display device and sensing method of the same | |
| CN208766625U (en) | Capacitance sensor and for detecting the degree of approach, touch and the system of pressure | |
| CN208622075U (en) | Touch panel anti-error-touch device | |
| CN205193693U (en) | Mobile terminal of no physics slip entity button | |
| CN103705305B (en) | Health care product and power management method thereof | |
| CN102279764A (en) | Method for normally starting reinforced cloud server at ultra-low temperature | |
| CN204595830U (en) | Electronic equipment and capacitive sensing system thereof | |
| TW201520865A (en) | Capacitance detection circuit that detects variation of capacitance through electrical charge duplication | |
| CN108333229A (en) | A kind of immersion detection sensor based on touch key IC | |
| CN101685353A (en) | Power-saving control device and method for wireless mouse | |
| CN207964709U (en) | A kind of immersion detection sensor based on touch key IC | |
| CN206348294U (en) | Touch sensible examines water circuit | |
| CN205334351U (en) | Automatic dampproofing heat sink of desktop computer host computer | |
| CN201323564Y (en) | Novel touch key | |
| TWI628576B (en) | Active capacitive touch device | |
| CN209592527U (en) | A kind of Novel socket | |
| CN205921576U (en) | A waterproof touch button for intelligent water gauge | |
| TW201814453A (en) | Touch sensitive electronic device, touch sensitive processing apparatus and method thereof | |
| CN206339591U (en) | A kind of electrotechnical, electronic surveys electric installation | |
| TWM531613U (en) | Stylus | |
| CN205334391U (en) | Touch pen | |
| CN206993084U (en) | Non-contact electronic scale controlled by capacitive sensing touch switch | |
| CN101150311A (en) | A simplified circuit for touch control | |
| CN106067801B (en) | Pressure-button | |
| CN210774309U (en) | Electronic scale |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180727 |
|
| WD01 | Invention patent application deemed withdrawn after publication |