CN112304287A

CN112304287A - Level sensor and level

Info

Publication number: CN112304287A
Application number: CN202011185043.3A
Authority: CN
Inventors: 沈煜旻; 陈晓燕
Original assignee: Suzhou Liou Electronic Science & Technology Co ltd
Current assignee: Suzhou Liou Electronic Science & Technology Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-02-02

Abstract

The invention discloses a level sensor and a level, which comprises a shell, wherein the shell comprises a lower cover and an upper cover covered with the lower cover, an annular groove is arranged in the lower cover, electrolyte is arranged in the annular groove, a plurality of groups of electrodes are arranged in a surrounding manner, each group of electrodes comprises two single electrodes, the two single electrodes are symmetrically arranged along the central point of the annular groove, each electrode comprises a detection part positioned in the annular groove and a leading-out part extending out of the shell, the plurality of groups of electrodes form 360 degrees in a surrounding manner, a liquid injection port for injecting liquid into the annular groove is arranged on one side of the shell, and a sealing part is arranged on the liquid injection port. Therefore, the product has higher competitiveness under the condition of equal detection precision.

Description

Level sensor and level

Technical Field

The invention relates to the field of level rulers, in particular to a level ruler sensor and a level ruler.

Background

The level bar is a measuring instrument which directly displays angular displacement by a level bubble by utilizing the principle of liquid level and measures the deviation degree of a measured surface relative to a horizontal position, a vertical position and an inclined position, but the current 360-degree digital display level bar adopts an MEMS sensor, so that the price of the level bar in the current market is overhigh.

Disclosure of Invention

The invention aims to provide a level sensor and a level, which can be used for solving the problems.

The technical scheme adopted by the invention for solving the technical problems is as follows: level bar sensor, which comprises a housin, the casing includes the lower cover and covers the upper cover that closes with the lower cover, be provided with the annular groove in the lower cover, be provided with electrolyte in the annular groove, still including the multiunit electrode that encircles the setting, every group electrode all includes two single electrodes, two single electrodes set up along annular groove central point symmetry, every electrode all includes the detection part that is located the annular groove and stretches out the outside extraction portion of casing, the multiunit electrode encircles and forms 360, casing one side is provided with the notes liquid mouth of annotating the liquid to the annular groove, be provided with the sealing member on the notes liquid mouth.

Further, the method comprises the following steps: the multiple groups of electrodes are arranged on the upper cover or the lower cover at intervals.

Further, the method comprises the following steps: the electrodes were provided with 4 sets.

Further, the method comprises the following steps: the electrolyte arranged in the annular groove does not pass through the central line of the annular groove.

The invention also discloses a level, which comprises the level sensor, an MCU module, a three-dimensional acceleration sensor, a power switch, a functional key circuit and a display module, wherein each single electrode is connected with an input/output port of the MCU module, the three-dimensional acceleration sensor, the power switch, the functional key circuit and the display module are connected with the MCU module, and the level also comprises a lithium battery for supplying power.

The invention has the beneficial effects that: the invention has simple structure, the plurality of electrodes extending out of the horizontal ruler sensor are matched with each other in pairs and can be used as output and input, so that the MCU chip with 12 bit AD and relatively low manufacturing cost can be used in the invention.

Drawings

FIG. 1 is a schematic view of a level sensor.

Fig. 2 is a schematic diagram of the internal structure of the level sensor.

FIG. 3 is a connection diagram of a level module.

Fig. 4 is a schematic diagram of an embodiment.

Fig. 5 is a schematic diagram of an embodiment.

Labeled as: a lower cover 1, an upper cover 2, an annular groove 3, a single electrode 4, a detection part 41, a lead-out part 42, a liquid injection port 5 and a sealing member 6.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The level sensor as shown in fig. 1 and fig. 2 comprises a casing, the casing comprises a lower cover 1 and an upper cover 2 covering the lower cover 1, an annular groove 3 is arranged in the lower cover 1, electrolyte is arranged in the annular groove 3, the electrolyte does not fill the whole annular groove, and the level sensor further comprises a plurality of groups of electrodes arranged in a surrounding manner, each group of electrodes comprises two single electrodes 4, the two single electrodes 4 are symmetrically arranged along the center point of the annular groove 3, each electrode comprises a detection part 41 positioned in the annular groove 3 and a leading-out part 42 extending out of the casing, the plurality of groups of electrodes form 360 degrees in a surrounding manner, a liquid injection port 5 for injecting liquid into the annular groove 3 is arranged on one side of the casing, a sealing part 6 is arranged on the liquid injection port 5, the sealing part 6 can be a sealed glass tube or other sealing plugs with sealing function, and is specifically applied in the level, the structure of the level ruler is as follows:

the level ruler comprises the level ruler sensor, an MCU module, a three-dimensional acceleration sensor, a power switch, a function key circuit and a display module, wherein the MCU module can select a low-cost chip with a display drive and a 12-bit AD conversion function, the cost can be reduced to 2 yuan, the three-dimensional acceleration sensor is an MEMS sensor, only a low-cost chip of about 1 yuan is needed, each single electrode 4 is connected with an input and output port of the AD function of the MCU module, the three-dimensional acceleration sensor, the power switch, the function key circuit and the display module are connected with the MCU module, the level ruler also comprises a lithium battery for supplying power, the lithium battery can select a rechargeable lithium battery with the model of 14500, during specific work, the inclination angle data of the three-dimensional acceleration sensor is read firstly, and the corresponding single electrode 4 is selected as a corresponding drive electrode and a readout electrode corresponding to the inclination angle data according to the inclination angle data, resulting in the final data.

On the basis, the multiunit electrode interval sets up on upper cover 2 or lower cover 1, the electrode is provided with 4 groups, and first group and third group electrode setting are on upper cover 2 promptly, and second group and fourth group electrode setting are on lower cover 1, and this kind of setting can guarantee that the 41 annular of detection portion of each electrode add can cover 360 completely, the electrolyte that sets up in the annular groove 3 does not cross the central line of annular groove 3 to guarantee that two relative single electrode 4 can partly get into the electrolyte, in addition, upper cover 2 and lower cover 1 are ceramic construction, and ceramic construction's setting is when doing benefit to processing, also can reduce cost.

The following is a specific example:

as shown in fig. 4, 8 single electrodes 4 are respectively marked as a to H, the leading-out parts 42 of the 8 single electrodes 4 are respectively connected with 8P ports of the MCU module, when the electrolyte level is at the position shown in fig. 4, the single electrodes 4 at the liquid level are determined to be the electrode a and the electrode E according to the data read by the three-dimensional acceleration sensor, the electrode C is completely absent in the electrolyte, the electrode a and the electrode E are selected as the signal input terminal of the sensor, the electrode C is used as the signal output terminal of the sensor, specifically, as shown in fig. 5, multi-point sampling is performed in each pulse period, and the average value of X minus the average value of Y is the data to be read.

The above-described embodiments are only one of the applications of the sensor, and the sensor can be used for measuring angles with 360 ° changes, and the objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-described embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Level bar sensor, its characterized in that: the novel electrode assembly comprises a housing, the casing includes lower cover (1) and upper cover (2) that closes with lower cover (1) lid, be provided with annular groove (3) in lower cover (1), be provided with electrolyte in annular groove (3), still including encircleing the multiunit electrode that sets up, every group electrode all includes two single electrodes (4), annular groove (3) central point symmetry sets up is followed in two single electrodes (4), every electrode all is including detection portion (41) that are located annular groove (3) and stretching out the outside extraction portion (42) of casing, the multiunit electrode encircles and forms 360, casing one side is provided with notes liquid mouth (5) of annotating liquid to annular groove (3), it is provided with sealing member (6) on liquid mouth (5) to annotate.

2. The level sensor of claim 1, wherein: the multiple groups of electrodes are arranged on the upper cover (2) or the lower cover (1) at intervals.

3. The level sensor of claim 1, wherein: the electrodes were provided with 4 sets.

4. The level sensor of claim 1, wherein: the electrolyte arranged in the annular groove (3) does not pass through the center line of the annular groove (3).

5. The level sensor of claim 1, wherein: the upper cover (2) and the lower cover (1) are of ceramic structures.

6. A level comprising the level sensor of claim 1, wherein: the three-dimensional acceleration sensor, the power switch, the functional key circuit and the display module are all connected with the MCU module, and the lithium battery for power supply is further included.

7. The level according to claim 6, wherein: the multiple groups of electrodes are arranged on the upper cover (2) or the lower cover (1) at intervals.

8. The level according to claim 6, wherein: the electrodes were provided with 4 sets.

9. The level according to claim 6, wherein: the electrolyte arranged in the annular groove (3) does not pass through the center line of the annular groove (3).

10. The level according to claim 6, wherein: the upper cover (2) and the lower cover (1) are of ceramic structures.