CN216246619U

CN216246619U - Device for detecting water level by alternating current

Info

Publication number: CN216246619U
Application number: CN202121709302.8U
Authority: CN
Inventors: 吴伟荣; 艾福安; 干星雨; 谭君文
Original assignee: Zhejiang Zhongguang Electric Appliance Group Co Ltd
Current assignee: Zhejiang Zhongguang Electric Appliance Group Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-04-08
Anticipated expiration: 2031-07-26

Abstract

The utility model relates to a device for detecting water level by alternating current, which comprises an MCU chip, a water level probe and terminals, wherein the water level probe is powered by a terminal B10, four interfaces of a terminal B10 are connected with an X1 pin of the MCU chip, the other interface is connected with an X2 pin of the MCU chip, the MCU chip alternately outputs 0V and 3.3V to form alternating current to supply power to X1 and X2; the four sockets of the terminal B10, which are connected with the X1 pins of the MCU chip, are also respectively connected with the DI8, DI9, DI10 and DI11 pins of the MCU chip, and receive or suspend reading the signal of the water level probe by judging whether X1 is 3.3V. The utility model ensures that the water level probe continuously exchanges the positive electrode and the negative electrode through the MCU chip, ensures that the water level probe electric ions exchange with each other and keep balance with each other, thereby preventing the water level probe from being damaged after electrolysis and prolonging the service life of the water level probe extremely.

Description

Device for detecting water level by alternating current

Technical Field

The utility model relates to the technical field of water level detection, in particular to a device for detecting a water level by alternating current.

Background

The water level detection circuit is widely applied to automatic instruments. In many water storage and utilization devices such as water tanks, water pools and boilers, the water level of the water storage and utilization devices needs to be detected, the water level information is known in real time and is controlled, and therefore the water level detection devices are needed to measure the water level.

Nowadays, detection methods for measuring water level are many, and mainly include a contact type and a non-contact type. For non-contact water level detection, infrared and ultrasonic water level measurement is common, but the water level measurement modes are seriously interfered by external environment and have higher cost.

The contact type water measuring detection mode mainly comprises direct current water measuring and alternating current water measuring. The existing industrial water measuring method mainly uses direct current water measuring, and has the defects that a measuring probe electrode in contact with water is in an electroplating state, an oxide film is formed around the measuring probe electrode, the conductivity of the measuring probe electrode is influenced, the detection effect of the measuring probe electrode is greatly reduced, if the measuring probe electrode is used for a long time, a circuit cannot work normally, the circuit part is complex, and the cost is high.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide an apparatus for detecting a water level using ac power, which can prolong the life of a water level probe.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a device for detecting water level by alternating current comprises an MCU chip, a water level probe and terminals, wherein the water level probe is powered by a terminal B10, four plug ports of a terminal B10 are connected with an X1 pin of the MCU chip, the other plug port is connected with an X2 pin of the MCU chip, the MCU chip alternately outputs 0V and 3.3V to form alternating current to supply power to X1 and X2; the four sockets of the terminal B10, which are connected with the X1 pins of the MCU chip, are also respectively connected with the DI8, DI9, DI10 and DI11 pins of the MCU chip, and receive or suspend reading the signal of the water level probe by judging whether X1 is 3.3V.

As a preferred scheme, the terminal B10 includes a No. 1 socket, a No. 2 socket, a No. 3 socket, a No. 4 socket and a No. 5 socket, the No. 1 socket is connected with an X2 pin of the MCU chip, and a resistor is connected in series between the No. 1 socket and the X2 pin; and the No. 2 interface to the No. 5 interface are connected with an X1 pin of the MCU chip, and each interface is connected with a resistor in series.

Preferably, the No. 2 socket to the No. 5 socket of the terminal B10 are also connected with four pins of DI11, DI10, DI9 and DI8 respectively, and resistors are connected in series at the four pins of DI11, DI10, DI9 and DI 8.

Preferably, the No. 2 socket to the No. 5 socket of the terminal B10 are respectively connected with capacitors in series and then grounded.

Preferably, the MCU chip is Ruisar 5F100PJ, and the B10 terminal is Changsheng VH-5A.

Compared with the prior art, the utility model has the beneficial effects that at least:

according to the utility model, the MCU chip enables the water level probes to continuously exchange the positive electrode and the negative electrode, so that the water level probes are mutually exchanged and kept balanced, and the water level probes are not damaged by electrolysis and are extremely long in service life; the utility model uses the alternating current mode to detect the water level, which can greatly prolong the service life of the water level probe; the repair rate of the water level detector is reduced, the trouble of a user is reduced, the use experience of the user is improved, and the value and the user trust of the brand are improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic structural diagram of an MCU chip of the present invention;

FIG. 2 is a schematic diagram of the wiring used to connect the terminals of the water level probe according to the present invention.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, elements, and/or combinations thereof, unless the context clearly indicates otherwise.

Further, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model will be further illustrated with reference to the following examples and drawings:

as shown in fig. 1 and 2, an alternating current water level detection device includes an MCU chip, a water level probe and a terminal, wherein the water level probe is powered by a terminal B10, the terminal B10 includes a No. 1 socket, a No. 2 socket, a No. 3 socket, a No. 4 socket and a No. 5 socket, the No. 1 socket is connected with an X2 pin of the MCU chip, and a resistor is connected in series between the No. 1 socket and an X2 pin; and the No. 2 interface to the No. 5 interface are connected with an X1 pin of the MCU chip, and each interface is connected with a resistor in series. No. 2 socket to No. 5 socket of the terminal B10 are also respectively connected with four pins of DI11, DI10, DI9 and DI8, and resistors are connected in series at the four pins of DI11, DI10, DI9 and DI 8. No. 2 socket to No. 5 socket of the terminal B10 are respectively connected with capacitors in series and then grounded. The MCU chip is Ruisar 5F100PJ, and the B10 terminal is Changsheng VH-5A.

The MCU chip exchanges output at 0V and 3.3V in an alternating mode to form alternating current to supply power to X1 and X2; the water level probe comprises a water level probe receiving terminal, a water level probe receiving terminal and a water level probe receiving terminal, wherein DI8, DI9, DI10 and DI11 are water level probe receiving terminals, when X1 outputs 3.3V and X2 outputs 0V, MCU chip pins connected with the water level probe start to receive signals input by the probe, the MCU chip reads the signals of the water level probe at the moment, and the MCU chip judges the water level signals and judges which position the water level is in; when the output of the X1 is 0V and the output of the X2 is 3.3V, the MCU chip suspends the reading of the water level probe signal; the purpose of the power supply in the mode is to continuously exchange the positive electrode and the negative electrode, so that the water level probes are mutually exchanged and balanced, the water level probes are not damaged after electrolysis, and the service life of the water level probes is prolonged extremely.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the principle and spirit of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. The utility model provides a device of alternating current detection water level which characterized in that: the water level probe is powered by a terminal B10, four sockets of a terminal B10 are connected with an X1 pin of the MCU chip, the other socket is connected with an X2 pin of the MCU chip, the MCU chip alternately outputs 0V and 3.3V to form alternating current to supply power to X1 and X2; the four sockets of the terminal B10, which are connected with the X1 pins of the MCU chip, are also respectively connected with the DI8, DI9, DI10 and DI11 pins of the MCU chip, and receive or suspend reading the signal of the water level probe by judging whether X1 is 3.3V.

2. The alternating current water level detection device according to claim 1, wherein the terminal B10 comprises a No. 1 socket, a No. 2 socket, a No. 3 socket, a No. 4 socket and a No. 5 socket, the No. 1 socket is connected with an X2 pin of the MCU chip, and a resistor is connected in series between the No. 1 socket and the X2 pin; and the No. 2 interface to the No. 5 interface are connected with an X1 pin of the MCU chip, and each interface is connected with a resistor in series.

3. The alternating current water level detecting device according to claim 2, wherein the sockets 2 to 5 of the terminal B10 are further connected with four pins DI11, DI10, DI9 and DI8 respectively, and resistors are connected in series at the four pins DI11, DI10, DI9 and DI 8.

4. The alternating current water level detecting device according to claim 2, wherein the No. 2 socket to the No. 5 socket of the terminal B10 are respectively connected in series with a capacitor and then grounded.

5. The alternating current water level detecting device according to claim 1, wherein the MCU chip is Ruisar 5F100PJ, and the B10 terminal is Changsheng VH-5A.