CN218238983U - Floor sweeper water tank liquid level detection device based on capacitive touch chip - Google Patents
Floor sweeper water tank liquid level detection device based on capacitive touch chip Download PDFInfo
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- CN218238983U CN218238983U CN202220988216.3U CN202220988216U CN218238983U CN 218238983 U CN218238983 U CN 218238983U CN 202220988216 U CN202220988216 U CN 202220988216U CN 218238983 U CN218238983 U CN 218238983U
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Abstract
The utility model discloses a floor sweeper water tank liquid level detection device based on capacitive touch chip, including installing the PCB circuit board on the water tank, install main control circuit, two touch-sensitive copper foils and a temperature detection copper foil on the PCB circuit board, two touch-sensitive copper foils and a temperature detection copper foil set gradually from top to bottom, main control circuit includes MCU control circuit, and MCU control circuit electric connection has LDO linear voltage stabilizing circuit, and MCU control circuit respectively with two touch-sensitive copper foils and a temperature detection copper foil electric connection; the utility model discloses a listen the change of electric capacity, thereby utilize special electric capacity to detect the chip and carry out electric capacity detection and data processing and reach the purpose that liquid level detected, compare with other liquid level detection sensor and have that structure and installation simple process, dynamic response are fast, the water tank and the quick-witted shell of sweeping the floor need not advantages such as trompil.
Description
Technical Field
The utility model relates to a quick-witted water tank liquid level detection technical field sweeps floor, especially relates to a quick-witted water tank liquid level detection device sweeps floor based on capacitanc touch chip.
Background
With the vigorous development of the field of intelligent home, the sweeper gradually enters every family, the liquid level detection of the water tank of the sweeper is mainly realized by a photoelectric water level sensor, a floating ball water level sensor and the like at present, and the detection devices have the defects of complex structural installation process, need of forming holes on the water tank, influence of water quality on detection results and the like; also there is ordinary electric capacity to detect the chip and can realize water tank liquid level detection, but need hug closely the water tank, can't accomplish interval 2 layers plastics and 1 layer air gap accuracy judgement water level, also does not have temperature compensation measure, though there is better detection precision at normal atmospheric temperature, can't guarantee when environment or liquid temperature change are great and detect the precision, the practicality is not high, therefore we have proposed a quick-witted water tank liquid level detection device of sweeping floor based on capacitanc touch chip.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a floor sweeper water tank liquid level detection device based on a capacitive touch chip.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a quick-witted water tank liquid level detection device sweeps floor based on capacitanc touch chip, is including installing the PCB circuit board on the water tank, install main control circuit, two touch-sensitive copper foils and a temperature detection copper foil on the PCB circuit board, two touch-sensitive copper foils and a temperature detection copper foil set gradually under to from last, main control circuit includes MCU control circuit, and MCU control circuit electric connection has LDO linear voltage stabilizing circuit, and MCU control circuit respectively with two touch-sensitive copper foils and a temperature detection copper foil electric connection, MCU control circuit is connected with the detection software through UART communication, IIC communication or IO mouth communication.
As further preferable in the present technical solution: the MCU control circuit comprises a high-sensitivity capacitance detection chip U2 of an AS9072DT-M model, a pin 7 of the high-sensitivity capacitance detection chip U2 is electrically connected with one end of a capacitor C5 and one end of a capacitor C4, and is grounded, a pin 8 of the high-sensitivity capacitance detection chip U2 is electrically connected with the other end of the capacitor C5, the other end of the capacitor C4 and a 3.3V high level, a pin 1 of the high-sensitivity capacitance detection chip U2 is electrically connected with an anode of a light-emitting diode D2, a cathode of the light-emitting diode D2 is electrically connected with one end of a resistor R4, the other end of the resistor R4 is electrically connected with one end of a resistor R6, and is grounded, the other end of the resistor R6 is electrically connected with a cathode of the light-emitting diode D3, and the anode of the light-emitting diode D3 is electrically connected with a pin 2 of the high-sensitivity capacitance detection chip U2.
As further preferable in the present technical solution: MCU control circuit electric connection has fixed robot main control unit P1 of inlaying on sweeping the floor the robot, robot main control unit P1's pin 1 ground connection, 2 electric connection of robot main control unit P1's pin has resistance R12's one end and high sensitivity electric capacity to detect pin 5 of chip U2, 3 electric connection of robot main control unit P1's pin has resistance R11's one end and high sensitivity electric capacity to detect pin 4 of chip U2, 4 electric connection of robot main control unit P1's pin has 3.3V high level, resistance R11's the other end and resistance R12's the other end.
As a further preferred aspect of the present invention: the detection software consists of a real-time value sampling, a filtering algorithm, a temperature compensation algorithm, a liquid level judgment output, a production line calibration upper computer and a debugging upper computer.
As a further preferred aspect of the present invention: the thickness of water tank is 3mm, and the robot of sweeping the floor includes the casing, and the thickness of casing is 3mm.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a listen the change of capacitance, thereby utilize special electric capacity to detect the chip and carry out electric capacity detection and data processing and reach liquid level detection's purpose, compare with other liquid level detection sensors and have that structure and installation simple process, dynamic response are fast, water tank and sweeper shell need not advantages such as trompil.
Drawings
Fig. 1 is a block diagram of a system connection of a liquid level detection device of a water tank of a sweeper based on a capacitive touch chip according to the present invention;
fig. 2 is a schematic view of the installation of the central main control circuit, two touch-sensing copper foils and one temperature-detecting copper foil of the liquid level detection device for the water tank of the sweeper based on the capacitive touch chip provided by the present invention on the PCB circuit board;
fig. 3 is a circuit connection diagram of an MCU control circuit of the floor sweeper water tank liquid level detection device based on the capacitive touch chip of the present invention;
fig. 4 is a circuit diagram of a robot main controller of the sweeper water tank liquid level detection device based on the capacitive touch chip provided by the utility model;
fig. 5 is the utility model provides a reflecting diode D3 and emitting diode D2's electric connection picture among quick-witted water tank liquid level detection device of sweeping floor based on capacitanc touch chip.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-5, a liquid level detection device of a sweeper water tank based on a capacitive touch chip comprises a PCB (printed circuit board) installed on the water tank, wherein the thickness of the water tank is 3mm, a main control circuit, two touch induction copper foils and a temperature detection copper foil are installed on the PCB, the two touch induction copper foils and the temperature detection copper foil are sequentially arranged from top to bottom, the main control circuit comprises an MCU (micro control unit) control circuit, the MCU control circuit is electrically connected with an LDO (low dropout regulator) linear voltage stabilizing circuit and is respectively electrically connected with the two touch induction copper foils and the temperature detection copper foil, the MCU control circuit is connected with detection software through UART (universal asynchronous receiver/transmitter) communication, IIC (inter-integrated circuit) communication or IO (input/output) port communication, and the detection software consists of real-time value sampling, a filtering algorithm, a temperature compensation algorithm, liquid level judgment output, a calibration upper computer and a debugging upper computer;
the MCU control circuit comprises a high-sensitivity capacitance detection chip U2 of an AS9072DT-M model, wherein the high-sensitivity capacitance detection chip U2 of the AS9072DT-M model has 18 high-precision and high-sensitivity capacitance detection channels to realize touch detection, a detection copper foil is placed at a position needing to detect water level, so that small capacitance change caused by the water level change can be detected, and liquid level detection is realized, a pin 7 of the high-sensitivity capacitance detection chip U2 is electrically connected with one end of a capacitor C5 and one end of a capacitor C4 and is grounded, a pin 8 of the high-sensitivity capacitance detection chip U2 is electrically connected with the other end of the capacitor C5, the other end of the capacitor C4 and a 3.3V high level, a pin 1 of the high-sensitivity capacitance detection chip U2 is electrically connected with an anode of a light emitting diode D2, a cathode of the light emitting diode D2 is electrically connected with one end of a resistor R4, the other end of the resistor R4 is electrically connected with one end of a resistor R6 and is grounded, the other end of the resistor R6 is electrically connected with a cathode of the light emitting diode D3, and an anode of the light emitting diode D3 is electrically connected with a pin 2 of the high-sensitivity detection chip U2;
the MCU control circuit is electrically connected with a robot main controller P1 fixedly embedded on the sweeping robot, the sweeping robot comprises a casing, the thickness of the casing is 3mm, a pin 1 of the robot main controller P1 is grounded, a pin 2 of the robot main controller P1 is electrically connected with one end of a resistor R12 and a pin 5 of a high-sensitivity capacitance detection chip U2, a pin 3 of the robot main controller P1 is electrically connected with one end of a resistor R11 and a pin 4 of the high-sensitivity capacitance detection chip U2, a pin 4 of the robot main controller P1 is electrically connected with a 3.3V high level, the other end of the resistor R11 and the other end of the resistor R12, through detecting the change of capacitance, the capacitance detection and data processing are carried out by utilizing a special capacitance detection chip to achieve the purpose of liquid level detection, and compared with other liquid level detection sensors, the liquid level sensor has the advantages of simple structure and installation process, fast dynamic response, no need of holes in a water tank and a sweeping machine casing, and the like.
In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific situations.
The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.
Claims (4)
1. The utility model provides a quick-witted water tank liquid level detection device sweeps floor based on capacitanc touch chip, is including installing the PCB circuit board on the water tank, its characterized in that, install main control circuit, two touch-sensitive copper foils and a temperature detection copper foil on the PCB circuit board, two touch-sensitive copper foils and a temperature detection copper foil set gradually under from last, main control circuit includes MCU control circuit, and MCU control circuit electric connection has LDO linear voltage stabilizing circuit, and MCU control circuit respectively with two touch-sensitive copper foils and a temperature detection copper foil electric connection, MCU control circuit is connected with the detection software through UART communication, IIC communication or IO mouth communication.
2. The device for detecting the liquid level of the water tank of the sweeper based on the capacitive touch chip AS claimed in claim 1, wherein the MCU control circuit comprises a high-sensitivity capacitance detection chip U2 of model AS9072DT-M, a pin 7 of the high-sensitivity capacitance detection chip U2 is electrically connected with one end of a capacitor C5 and one end of a capacitor C4, and is grounded, a pin 8 of the high-sensitivity capacitance detection chip U2 is electrically connected with the other end of the capacitor C5, the other end of the capacitor C4 and a 3.3V high level, a pin 1 of the high-sensitivity capacitance detection chip U2 is electrically connected with an anode of a light emitting diode D2, a cathode of the light emitting diode D2 is electrically connected with one end of a resistor R4, the other end of the resistor R4 is electrically connected with one end of a resistor R6, and is grounded, the other end of the resistor R6 is electrically connected with a cathode of a light emitting diode D3, and an anode of the light emitting diode D3 is electrically connected with the pin 2 of the high-sensitivity capacitance detection chip U2.
3. The device for detecting the liquid level of the water tank of the sweeper based on the capacitive touch chip according to claim 1, wherein the MCU control circuit is electrically connected with a robot main controller P1 fixedly embedded on the sweeping robot, pin 1 of the robot main controller P1 is grounded, pin 2 of the robot main controller P1 is electrically connected with one end of a resistor R12 and pin 5 of a high-sensitivity capacitance detection chip U2, pin 3 of the robot main controller P1 is electrically connected with one end of a resistor R11 and pin 4 of the high-sensitivity capacitance detection chip U2, and pin 4 of the robot main controller P1 is electrically connected with a 3.3V high level, the other end of the resistor R11 and the other end of the resistor R12.
4. The device for detecting the liquid level of the water tank of the sweeper based on the capacitive touch chip as claimed in claim 3, wherein the thickness of the water tank is 3mm, and the sweeping robot comprises a housing, and the thickness of the housing is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220988216.3U CN218238983U (en) | 2022-04-26 | 2022-04-26 | Floor sweeper water tank liquid level detection device based on capacitive touch chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220988216.3U CN218238983U (en) | 2022-04-26 | 2022-04-26 | Floor sweeper water tank liquid level detection device based on capacitive touch chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218238983U true CN218238983U (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220988216.3U Active CN218238983U (en) | 2022-04-26 | 2022-04-26 | Floor sweeper water tank liquid level detection device based on capacitive touch chip |
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| Country | Link |
|---|---|
| CN (1) | CN218238983U (en) |
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2022
- 2022-04-26 CN CN202220988216.3U patent/CN218238983U/en active Active
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