CN220187805U - Three-voltage signal water tank water level sensor - Google Patents

Abstract

The utility model discloses a three-voltage signal water tank water level sensor which comprises a water tank body, wherein a triangular prism is embedded in the bottom of one side of the water tank body, a magnet block is arranged on one side, connected with the water tank body, of the triangular prism, a sensor body is arranged on one side of the water tank body, semicircular mounting lugs are formed on two sides of the sensor body, a connecting line is arranged on the rear side of the sensor body, a sensing head is arranged on the front side of the sensor body, and a PCB (printed circuit board) is arranged inside the sensor body. The infrared photoelectric sensor and the Hall sensor are integrated on the sensor, only one signal wire is used for judging and detecting, the water tank body and the liquid are combined into a whole, the water tank body is not required to be provided with the water tank body sensor and the liquid sensor respectively, one water tank body is used, the detecting structure is reduced, the sensor body is convenient to install, the damage probability of the sensor body is reduced, and the host can detect by using only one signal wire.

Description

Three-voltage signal water tank water level sensor

Technical Field

The utility model relates to the field of liquid detection, in particular to a three-voltage signal water tank water level sensor.

Background

In many household appliances or industrial equipment using a water tank, in order to meet intelligent automation, the water tank needs to be detected on a machine, whether the water tank is well filled or not, and whether water exists in the water tank or not. Typically two sensors are used to determine the tank and water separately. The two sensors are used separately, so that the cost of detecting components is increased, the signal wires are more in structure, inconvenient to install and the damage probability is increased.

Disclosure of Invention

Technical problem to be solved

Aiming at the problems existing in the prior art, the utility model aims to provide the three-voltage signal water tank water level sensor which integrates infrared photoelectric and Hall sensing on one sensor, only one signal wire is used for judging and detecting, the functions of a water tank body and liquid detection are combined into a whole, the detection of the tank body and the liquid is realized, the tank body sensor and the liquid sensor are not required to be respectively installed, one detection structure is reduced, the installation of the sensor body is facilitated, the damage probability of the sensor body is reduced, and the host can detect by using only one signal wire without multiple signal wires and multiple logics.

Technical proposal

In order to solve the problems, the utility model adopts the following technical scheme.

The utility model provides a three voltage signal water tank water level sensor, includes the water tank body, a side bottom of water tank body has inlayed the prism, one side that the prism was connected with the water tank body is equipped with the magnet piece, one side of water tank body is equipped with the sensor body, the both sides of sensor body are formed with semicircular mounting ear, the rear side of sensor body is equipped with connecting line, the front of sensor body is equipped with the inductive head, the inside of sensor body is equipped with the PCB board.

Further, a groove is formed in one side of the triangular prism, on which the magnet block is mounted, and the magnet block is mounted in the groove.

Further, the magnet block is a non-split polar magnet.

Further, the middle part of the mounting lug is provided with a mounting hole, and the mounting lug and the sensor body are arranged into an integrated structure.

Further, the upper end of the sensor body is provided with a rectangular notch.

Further, the induction head is provided with two induction areas, and the two induction areas are respectively arranged as an infrared photoelectric induction area and a Hall induction area.

Further, the front of the induction head is provided with a rubber pad, and the rubber pad is tightly attached to the PCB.

Advantageous effects

Compared with the prior art, the utility model has the advantages that:

this scheme fuses infrared photoelectric and hall response on a sensor, only uses a signal line to judge and detects, two unifications of function to water tank body and liquid detection, detects water tank body and liquid, need not to install water tank body sensor and liquid sensor respectively again, use one can, reduced the structure of detecting to make things convenient for the installation of sensor body, reduced the damage probability of sensor body, make the host computer use only a signal line can detect, need not many signal lines, many logics.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a schematic view of a sensor body according to the present utility model;

FIG. 4 is a schematic view of a triangular prism structure according to the present utility model;

FIG. 5 is a perspective view of a sensor body according to the present utility model;

FIG. 6 is a schematic diagram of a PCB structure of the present utility model;

fig. 7 is a schematic circuit diagram of the present utility model.

The reference numerals in the figures illustrate:

1. a water tank body; 2. a triangular prism; 3. a magnet block; 4. a mounting ear; 5. a connection line; 6. an induction head; 7. a PCB board; 8. a groove; 9. a mounting hole; 10. a rectangular notch; 11. rubber pad, 12, sensor body.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

referring to fig. 1 to 7, a three-voltage signal water tank water level sensor comprises a water tank body 1, a triangular prism 2 is embedded at the bottom of one side of the water tank body 1, a magnet block 3 is arranged at one side of the triangular prism 2 connected with the water tank body 1, a sensor body 12 is arranged at one side of the water tank body, the magnet block 3 is arranged as a non-split polar magnet, semicircular mounting lugs 4 are formed at two sides of the sensor body 12, a connecting line 5 is arranged at the rear side of the sensor body 12, the upper two parts of the connecting line 5 are a live wire and a zero wire in sequence from top to bottom, the signal source line is arranged at the lowest part of the connecting line, a sensing head 6 is arranged at the front of the sensor body 12, two sensing areas are respectively arranged in an infrared photoelectric sensing area and a hall sensing area, liquid inside the water tank body 1 is conveniently judged, and a PCB 7 is arranged inside the sensor body 12.

Referring to fig. 4, a groove 8 is formed on one side of the triangular prism 2 where the magnet block 3 is mounted, the magnet block 3 is mounted inside the groove 8, and the installation of the magnet block 3 is facilitated by providing the groove 8, which is beneficial to the induction of the magnet block 3 and the sensor body 12.

Referring to fig. 3, the middle part of the mounting lug 4 is provided with a mounting hole 9, and the mounting lug 4 and the sensor body 12 are integrally formed, so that the sensor body 12 is conveniently mounted by using a bolt fixing part through the mounting hole 9.

Referring to fig. 5, a rectangular notch 10 is provided at the upper end of the sensor body 12, and the rectangular notch 10 is designed to prevent fool from defining the sensing positions of the hall chip and the infrared device during installation.

Referring to fig. 5, a rubber pad 11 is disposed on the front surface of the sensor head 6, and the rubber pad 11 is tightly attached to the PCB 7 to prevent the infrared light from penetrating.

Liquid-free state: the infrared light can be reflected back at 90 degrees in the triangular prism 2, and the receiving tube can receive the infrared light; the water state is: infrared light can penetrate through the triangular prism 2 without reflection.

The following table is a water tank status detection table:

referring to fig. 1 to 7, in use, the water tank body 1 has water in place: the triangular prism 2 in the water tank under the water state can not reflect infrared light, namely the voltage of the point A of the receiving tube PT1 without the infrared light action keeps 5V high level, so that the Q1PMOS tube can not be conducted, the U1 Hall chip is sensed by the magnet block 3 in the water tank at the moment, and low level is output, so that the point B=OUT is less than 0.2V; the water tank body 1 lacks water in place: the triangular prism 2 in the water tank body 1 reflects infrared light in a water shortage state, namely the voltage of the receiving tube PT1 at the point A triggered by the infrared light is pulled down by <0.2V, so that the Q1PMOS tube is conducted, the U1 Hall chip is pulled to a low level by the induction of the point B of the magnet block 3 in the water tank at the moment, namely the output voltage of OUT is R4 and the resistance partial voltage VCC of R6 is 5V, the output typical value is 2.5V, and the voltage parameter can be adjusted according to the requirement of a user; the water tank is not in place: the water tank is free of a triangular prism 2: the infrared light cannot be reflected, namely the voltage of the point A of the receiving tube PT1 without the infrared light action is kept at a high level of 5V, so that the Q1PMOS tube cannot be conducted; the lack of water tank is no magnetite piece 3, and U1 hall chip is not inductive, and OUT voltage=b point voltage is pulled to high level >4.5V through R3 this moment.

The above description is only of the preferred embodiments of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.

Claims (7)

1. The utility model provides a three voltage signal water tank water level sensor, includes the water tank body, its characterized in that: the three-dimensional water tank is characterized in that a triangular prism is embedded in the bottom of one side of the water tank body, a magnet block is arranged on one side, connected with the water tank body, of the water tank body, a sensor body is arranged on one side of the water tank body, semicircular mounting lugs are formed on two sides of the sensor body, a connecting circuit is arranged on the rear side of the sensor body, a sensing head is arranged on the front side of the sensor body, and a PCB (printed circuit board) is arranged inside the sensor body.

2. A three voltage signal tank water level sensor as claimed in claim 1, wherein: a groove is formed in one side of the triangular prism, on which the magnet block is mounted, and the magnet block is mounted in the groove.

3. A three voltage signal tank water level sensor as claimed in claim 1, wherein: the magnet block is a non-split polar magnet.

4. A three voltage signal tank water level sensor as claimed in claim 1, wherein: the middle part of the mounting lug is provided with a mounting hole, and the mounting lug and the sensor body are arranged into an integrated structure.

5. A three voltage signal tank water level sensor as claimed in claim 1, wherein: the upper end of the sensor body is provided with a rectangular notch.

6. A three voltage signal tank water level sensor as claimed in claim 1, wherein: the induction head is provided with two induction areas, and the two induction areas are respectively arranged as an infrared photoelectric induction area and a Hall induction area.

7. A three voltage signal tank water level sensor as claimed in claim 1, wherein: the front of inductive head is equipped with the rubber pad, the tight laminating of rubber pad and PCB board.