CN213181351U - Device for detecting material impurities based on capacitance principle - Google Patents
Device for detecting material impurities based on capacitance principle Download PDFInfo
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- CN213181351U CN213181351U CN202022325605.1U CN202022325605U CN213181351U CN 213181351 U CN213181351 U CN 213181351U CN 202022325605 U CN202022325605 U CN 202022325605U CN 213181351 U CN213181351 U CN 213181351U
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- electric capacity
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Abstract
The utility model discloses a device based on electric capacity principle detects material impurity, including the capacitive sensing unit that is used for the electric capacity variation difference according to the different detection of material and the touch control unit who is used for gathering and handling the electric capacity data, capacitive sensing unit with touch control unit is connected, capacitive sensing unit includes capacitive sensor and is used for the protection capacitive sensor not damaged and set up in the apron of capacitive sensor one side, touch control unit includes touch controller, touch controller is connected with the host computer through the interface. The utility model adopts the above structure a device based on electric capacity principle detects material impurity, simple structure, strong adaptability can detect small electric capacity signal variation, through host computer reaction electric capacity signal at any time, has greatly made things convenient for user's use.
Description
Technical Field
The utility model relates to a touch control technical field especially relates to a device based on electric capacity principle detects material impurity.
Background
In recent years, with the development of computer technology, network technology, communication technology and control technology, some intelligent control systems have come up, wherein the capacitive touch technology has been developed and applied to different fields.
However, the existing capacitive touch technology is greatly affected by the outside world, and particularly, if the capacitive touch technology is assembled on a housing of a touch screen, if the capacitive touch technology contains metal impurities, the sensing data of the capacitive touch screen is deviated, and if the capacitive touch screen is serious, the whole touch control system can not be touched, which causes troubles to producers and users.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device based on electric capacity principle detects material impurity to solve above-mentioned capacitive touch screen because metal impurity's existence, the response data that appears makes mistakes and the condition of unable touch.
In order to realize the above-mentioned purpose, the utility model provides a device based on electric capacity principle detects material impurity, including be used for according to the different capacitive sensing unit that detects of material capacitance variation and the touch control unit who is used for gathering and handling the electric capacity data, capacitive sensing unit with touch control unit is connected, capacitive sensing unit includes capacitive sensor and is used for the protection capacitive sensor not receive damage and set up in the apron of capacitive sensor one side, touch control unit includes touch controller, touch controller is connected with the host computer through the interface.
Optimally, the interface is a burning interface or I2And C, communication interface.
Optimized, said I2And a pull-up resistor for ensuring pull-up capability is arranged on the C communication pin.
Preferably, the resistance value of the pull-up resistor is 3.3 kilo-ohms.
Preferably, the touch controller is externally connected with a power supply.
Preferably, the power supply is a set of 3.3V power supplies.
Therefore, the utility model adopts the above structure a device based on electric capacity principle detects material impurity has following beneficial effect:
1. simple structure, strong adaptability can detect small capacitance signal variation.
2. Only one group of 3.3V power supplies are needed for external connection, so that subsequent installation and maintenance of a client are facilitated;
3. the utility model discloses the test burns the record interface and is same, very big use that has made things convenient for the customer. The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic block diagram of an embodiment of the device for detecting impurities in a material based on the capacitive principle according to the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the device for detecting material impurities based on the capacitance principle according to the present invention;
fig. 3 is a circuit diagram of an embodiment of the device for detecting material impurities based on the capacitance principle.
In the figure: 1. a capacitive sensing unit; 2. a touch control unit; 3. a capacitive sensor; 4. and a touch controller.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes embodiments of the present invention with reference to the accompanying drawings. Fig. 1 is a schematic block diagram of an embodiment of the device for detecting impurities in a material based on the capacitive principle according to the present invention; fig. 2 is a schematic structural diagram of an embodiment of the device for detecting material impurities based on the capacitance principle according to the present invention; fig. 3 is a circuit diagram of an embodiment of the device for detecting material impurities based on the capacitance principle. As shown in the figure, the utility model relates to a device based on electric capacity principle detects material impurity, including being used for the capacitive sensing unit 1 that the electric capacity variation that detects according to the material difference is different and the touch control unit 2 that is used for gathering and handling the electric capacity data, capacitive sensing unit 1 is connected with touch control unit 2, and capacitive sensing unit 1 is connected, and capacitive sensing unit 2The sensing unit 1 comprises a capacitive sensor 3 and a cover plate which is used for protecting the capacitive sensor from being damaged and is arranged on one side of the capacitive sensor, the touch control unit 2 comprises a touch controller 4, and the touch controller 4 is connected with a host through an interface. The interface is a burning interface or I2And C, communication interface. I is2And a pull-up resistor for ensuring pull-up capability is arranged on the C communication pin. The pull-up resistor has a resistance of 3.3 kilo-ohms. The touch controller 4 is externally connected to a power supply. The power supply is a set of 3.3V power supplies. The power supply is also subjected to secondary filtering decoupling processing before being connected with the touch controller 4, so that signals received by the touch controller 4 are more stable.
The utility model discloses a concrete implementation process does: to touch controller I2And C, connecting the communication interface or the burning interface with a host, starting the capacitive sensor to work, contacting the tested material with a polar plate of the capacitive sensor, sensing the capacitance information of the material by the capacitive sensor, receiving the capacitance information of the capacitive sensor by the touch controller, calculating the capacitance variation, directly displaying the calculation result on host equipment, analyzing whether the material contains metal impurities or not according to the variation value of the capacitance, and further judging whether the material can be applied to the shell of the touch screen or not.
The utility model discloses well capacitive sensor and touch controller's structure and theory of operation are the conventional technical means in this field, do not consequently do the specific restriction of structure and model here.
Therefore, the device for detecting the material impurities based on the capacitance principle, which adopts the structure, has the advantages of simple structure and strong adaptability, and can detect the small capacitance signal variation; only one group of 3.3V power supplies are needed for external connection, so that subsequent installation and maintenance of a client are facilitated; the test burning interfaces are the same, so that great convenience is brought to the use of customers.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (6)
1. The utility model provides a device for detect material impurity based on electric capacity principle which characterized in that: the capacitive touch screen comprises a capacitive sensing unit and a touch control unit, wherein the capacitive sensing unit is used for detecting different capacitance variation quantities according to different materials, the touch control unit is used for collecting and processing capacitance data, the capacitive sensing unit is connected with the touch control unit, the capacitive sensing unit comprises a capacitive sensor and a cover plate, the cover plate is used for protecting the capacitive sensor from being damaged and is arranged on one side of the capacitive sensor, the touch control unit comprises a touch controller, and the touch controller is connected with a host through an interface.
2. The apparatus for detecting impurities in a material based on the capacitive principle as claimed in claim 1, wherein: the interface is a burning interface or I2And C, communication interface.
3. The apparatus for detecting impurities in a material based on the capacitive principle as claimed in claim 2, wherein: said I2And a pull-up resistor for ensuring pull-up capability is arranged on the C communication pin.
4. A device for detecting impurities in a material based on the capacitive principle as claimed in claim 3, wherein: the resistance value of the pull-up resistor is 3.3 kilo-ohms.
5. The apparatus for detecting impurities in a material based on the capacitive principle as claimed in claim 1, wherein: and the touch controller is externally connected with a power supply.
6. The apparatus for detecting impurities in a material based on the capacitive principle as claimed in claim 5, wherein: the power supply is a group of 3.3V power supplies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022325605.1U CN213181351U (en) | 2020-10-19 | 2020-10-19 | Device for detecting material impurities based on capacitance principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022325605.1U CN213181351U (en) | 2020-10-19 | 2020-10-19 | Device for detecting material impurities based on capacitance principle |
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| CN213181351U true CN213181351U (en) | 2021-05-11 |
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| CN202022325605.1U Active CN213181351U (en) | 2020-10-19 | 2020-10-19 | Device for detecting material impurities based on capacitance principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285169A (en) * | 2020-10-21 | 2021-01-29 | 苏州芯沃科电子科技有限公司 | System and method for distinguishing material attributes based on touch device |
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2020
- 2020-10-19 CN CN202022325605.1U patent/CN213181351U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285169A (en) * | 2020-10-21 | 2021-01-29 | 苏州芯沃科电子科技有限公司 | System and method for distinguishing material attributes based on touch device |
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