CN216645512U

CN216645512U - Liquid level detection device

Info

Publication number: CN216645512U
Application number: CN202220150303.1U
Authority: CN
Inventors: 张宇炬; 贺龙钊; 吴贵龙
Original assignee: Guangdong Haoyun Technology Co Ltd
Current assignee: Guangdong Haoyun Technology Co Ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-05-31
Anticipated expiration: 2032-01-19

Abstract

The utility model provides a liquid level detection device, and relates to the technical field of liquid level detection. The liquid level detection device comprises a container, a power supply, a controller and a plurality of sensors, wherein the controller is respectively connected with the power supply and the sensors, the container is used for containing liquid to be detected, the sensors are arranged at intervals in the depth direction of the container, each sensor is respectively connected with the container, each sensor is used for outputting a first level signal to the controller in the state of being immersed by the liquid to be detected, the sensors are used for outputting a second level signal to the controller in the state of exposing the liquid to be detected, and the controller is used for acquiring the depth of the liquid to be detected according to the first level signal and the second level signal. The liquid level detection device is convenient to install, wide in application scene and particularly suitable for occasions with low liquid level detection precision, such as large reservoirs, chemical fertilizers of agricultural machinery equipment or fuel oil and the like.

Description

Liquid level detection device

Technical Field

The utility model relates to the technical field of liquid level detection, in particular to a liquid level detection device.

Background

To the lower occasion of relevant liquid level detection precision requirement such as large-scale cistern, swimming pool, reservoir, traditional liquid level detection mode is the dipperstick that uses the area scale, measures through the scale that detection personnel naked eye discernment liquid level reachd, and this measuring mode efficiency is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a liquid level detection device which can detect the liquid level depth, is suitable for occasions with low requirements on detection precision of related liquid levels of large-scale reservoirs, swimming pools, reservoirs, chemical fertilizers or fuel oil of agricultural machinery and equipment and the like, and has high detection efficiency.

In a first aspect, the present invention provides a liquid level detection device, including a container, a power supply, a controller, and a plurality of sensors, where the container is configured to contain a liquid to be detected, the controller is respectively connected to the power supply and the sensors, the sensors are arranged at intervals in a depth direction of the container, each of the sensors is respectively connected to the container, each of the sensors is configured to output a first level signal to the controller in a state of being immersed in the liquid to be detected, the sensor is configured to output a second level signal to the controller in a state of being exposed from the liquid to be detected, and the controller is configured to obtain a liquid level height of the liquid to be detected according to the first level signal and the second level signal.

Further, the sensor employs a capacitive proximity sensor.

Furthermore, each sensor is connected with a signal wire, and one end of the signal wire, which is far away from the sensor, is connected with the controller.

Further, a plurality of the sensors are connected with the controller in a parallel manner.

Further, still include the dead lever, the dead lever with the container is connected, the sensor interval sets up on the dead lever.

Further, the fixed rod is connected to the bottom of the container, and the axial direction of the fixed rod is consistent with the depth direction of the liquid to be detected.

Further, the plurality of sensors include a first sensor and a second sensor, the first sensor is closer to the bottom of the container than the second sensor, and the second sensor is arranged on a preset liquid level line.

Further, the alarm is connected with the controller, and the controller controls the alarm to send out an alarm signal when the second sensor outputs a first level signal to the controller.

Further, still include the display, the controller with the display is connected, the display is used for showing the liquid level depth.

Further, the display includes the screen and locates a plurality of display element check on the screen, every be equipped with the signal lamp in the display element check, the signal lamp with the controller is connected, the signal lamp is used for lighting the display element check, the quantity that the display element check was lighted with the degree of depth of the liquid that awaits measuring corresponds.

The embodiment of the utility model has the beneficial effects that:

according to the liquid level detection device provided by the embodiment of the utility model, the sensors are connected to the container and are arranged at intervals in the depth direction of the container, each sensor is connected with the controller, if the sensor is submerged by liquid to be detected, a first level signal is output to the controller, if the sensor is not submerged by the liquid to be detected, a second level signal is output to the controller, and the controller can obtain the liquid level height of the liquid to be detected according to the received first level signal and the second level signal.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic layout diagram of sensors of a liquid level detection apparatus provided in an embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating a block diagram of a liquid level detecting apparatus according to an embodiment of the present invention;

fig. 3 is a schematic layout view of display cells of the liquid level detection apparatus provided in the embodiment of the present invention.

Icon: 10-a container; 20-a fixing rod; 30-a sensor; 31-a first sensor; 33-a second sensor; 35-signal lines; 40-a controller; 50-a power supply; 60-an alarm; 70-a display; 71-screen; 73-display cell.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, 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 in specific cases to those skilled in the art.

Examples

Referring to fig. 1 to 3, a liquid level detecting apparatus according to an embodiment of the present invention includes a container 10, a power supply 50, a controller 40, and a plurality of sensors 30, where the container 10 is configured to contain a liquid to be detected, the controller 40 is connected to the power supply 50 and the sensors 30, the sensors 30 are arranged at intervals in a depth direction of the container 10, each sensor 30 is connected to the container 10, each sensor 30 is configured to output a first level signal to the controller 40 in a state of being immersed in the liquid to be detected, the sensor 30 is configured to output a second level signal to the controller 40 in a state of being exposed to the liquid to be detected, and the controller 40 is configured to obtain a liquid level of the liquid to be detected according to the first level signal and the second level signal. This liquid level detection device simple to operate, use in a flexible way, be applicable to occasions such as large-scale cistern, swimming pool, reservoir, agricultural machinery equipment chemical fertilizer or fuel that the liquid level detection precision is not high, measurement of efficiency is high, and measurement process safety, risk-free.

It should be understood that the controller 40 stores in advance the actual height represented by the installation position of each sensor 30, that is, the liquid level depth corresponding to the installation position of each sensor 30, and since the sensors 30 located below the liquid level all output the first level signal and the sensors 30 located above the liquid level all output the second level signal, the controller 40 can determine that the liquid level is located between any two sensors 30 according to the first level signal or the second level signal output by each sensor 30, and then can obtain the liquid level height of the liquid to be measured according to the liquid level depth corresponding to each sensor 30 stored in advance.

In the present embodiment, the sensor 30 is a capacitive proximity sensor 30, and the capacitive proximity sensors 30 are provided at intervals in the depth direction of the container 10. When the capacitive proximity sensor 30 is below the liquid level, i.e., in a state of being submerged by the liquid, the capacitive proximity sensor 30 outputs a first level signal, i.e., a low level signal, to the controller 40; when the capacitive proximity sensor 30 is above the liquid level, i.e., not submerged, the capacitive proximity sensor 30 is in a normal state and outputs a second level signal, i.e., a high level signal, to the controller 40. Optionally, a signal line 35 is connected to each sensor 30, and an end of the signal line 35 away from the sensor 30 is connected to the controller 40, that is, the sensor 30 and the controller 40 realize signal transmission through the signal line 35. Of course, the signal transmission between the sensor 30 and the controller 40 can also be transmitted through bluetooth, a wireless network, a local area network, etc., and is not limited in this regard.

The sensor 30 in the embodiment adopts the capacitive proximity sensor 30, has the waterproof performance of IP67 level, is good in waterproof performance, has good anti-interference performance for the conditions of liquid inclination, liquid sputtering and the like which may exist, and reduces misjudgment in the measurement process. Of course, in other alternative embodiments, the sensor 30 may also adopt other switching value signal sensors 30, and is not limited in particular here.

Optionally, a plurality of sensors 30 are connected in parallel with the controller 40. By the arrangement, the sensors 30 are not interfered with each other, and the sensors 30 are arranged independently, so that the detection results of other sensors 30 are not influenced after a certain sensor 30 breaks down, the influence on the whole detection result is small, and the adaptability is higher.

Optionally, the liquid level detection apparatus further includes a fixing rod 20, a display 70 and an alarm 60, the fixing rod 20 is connected to the container 10 and connected to the bottom of the container 10, one end of the fixing rod 20 away from the bottom of the container 10 can be used to expose the liquid level of the liquid to be detected, the sensors 30 are disposed on the fixing rod 20 at intervals, and the axial direction of the fixing rod 20 is consistent with the depth direction of the liquid to be detected. The fixing rod 20 is fixedly connected to the bottom of the container 10, and the fixing rod 20 is perpendicular to the bottom of the container 10, so that the actual liquid level of the liquid to be measured can be more accurately reflected by the height corresponding to the installation position of the sensor 30. The plurality of sensors 30 may be disposed at equal intervals in the depth direction of the container 10, or may be disposed at unequal intervals according to an actual detection scene, and is not particularly limited herein.

The plurality of sensors 30 includes a first sensor 31 and a second sensor 33, the first sensor 31 is closer to the bottom of the container 10 than the second sensor 33, the second sensor 33 is disposed on a predetermined liquid level line, and the second sensor 33 is used for realizing early warning. When the liquid level of the liquid to be measured submerges the second sensor 33, the second sensor 33 outputs a first level signal, namely a low level signal, to the controller 40, and after the controller 40 receives the low level signal output by the second controller 40, the alarm 60 is controlled to send out an alarm signal, so that the high liquid level early warning function is realized, and the overflow of the water level can be effectively prevented. The alarm signal includes, but is not limited to, a voice signal, a buzzer signal, a light signal, or a warning light on signal, and the like, and is not limited in particular. It should be noted that the number of the first sensors 31 may be plural, and the number of the second sensors 33 may be one, and of course, in some cases where it is necessary to perform early warning on a plurality of preset liquid level lines, the number of the second sensors 33 may also be increased appropriately.

In other alternative embodiments, one or more sensors 30 may be selected from the plurality of first sensors 31 as the low level warning sensor 30, and since the first sensors 31 are disposed relatively close to the bottom of the container 10, if one or more first sensors 31 output a high level signal to the controller 40, it indicates that the liquid level is not submerged, that is, the liquid level of the liquid to be measured in the container 10 is lower than the water shortage warning level and is in a low level state, so as to achieve the purpose of low level warning.

In this embodiment, the controller 40 is connected to a display 70, and the display 70 is used for displaying the liquid level depth. The display 70 comprises a screen 71 and a plurality of display cells 73 arranged on the screen 71, the display cells 73 are sequentially arranged, a signal lamp is arranged in each display cell 73 and connected with the controller 40, the signal lamp is used for lighting the display cells 73, and the number of the lighted display cells 73 corresponds to the depth of the liquid to be measured. It will be appreciated that the higher the level of liquid to be measured in the container 10, the greater the number of display cells 73 that are illuminated. For example, the number of the display cells 73 is four, and the display cells are arranged in order from bottom to top on the screen 71. When the liquid level of the liquid to be measured reaches or exceeds the full liquid level preset line, all the display unit cells 73 are all lighted, and all the four display unit cells 73 are lighted, namely, the display unit cells are in a full cell state. When the liquid level of the liquid to be measured reaches the half liquid level preset line, half of the display cells 73 are lighted, and the two display cells 73 positioned below are lighted, namely, are in a half-cell state. Through setting up display unit check 73 on display 70 and the screen 71, can judge the liquid level condition of the liquid that awaits measuring directly perceivedly, convenient operation, the practicality is strong. Optionally, the liquid level height value displayed on the screen 71 is convenient for a measurer to intuitively judge the current liquid level condition.

It is understood that the controller 40 may be a general-purpose Processor, including but not limited to a Central Processing Unit (CPU), a Network Processor (NP), etc.; the device may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, and the like. Of course, the controller 40 may also be integrated into the PLC controller 40, a single chip, or the like, and is not limited herein.

The liquid level detection device provided by the embodiment of the utility model has the following working principle:

vertically installing a fixing rod 20 in the container 10, wherein one end of the fixing rod 20 is connected with the bottom of the container 10, and the other end of the fixing rod 20 is used for exposing the liquid level of the liquid to be detected; the sensors 30 are provided on the fixing rod 20 at intervals in the depth direction of the container 10, and output a low level signal to the controller 40 if the sensors 30 are submerged in the liquid, and output a high level signal to the controller 40 if the sensors 30 are not submerged in the liquid, actual height values represented by the respective sensors 30 are stored in the controller 40 in advance, and the controller 40 can acquire the position of the liquid level, that is, the liquid level height, based on the received high level signal and low level signal of the respective sensors 30. It will be appreciated that the uppermost one of the submerged sensors 30 (i.e., the sensor 30 that emits a low level signal) corresponds to the height of the liquid to be measured. The liquid level height of the liquid to be measured is displayed on the screen 71 of the display 70, and the liquid level state is visually judged by the lighting number of the display unit cells 73. In addition, if the second sensor 33 arranged on the preset liquid level line is submerged, the liquid level overflow alarm function is also realized, and the practicability is high.

If the detection precision of the liquid level detection device needs to be improved, only more sensors 30 need to be installed on the fixing rod 20, and the smaller the distance between two adjacent sensors 30 in the depth direction of the container 10 is, the higher the liquid level detection precision is. The more sensors 30, the more conditions that different depths can be detected, the more corresponding sensors 30 need to be replaced during maintenance, and the operation is convenient and the maintenance and the replacement are easy.

The liquid level detection device provided by the embodiment of the utility model has the following beneficial effects:

the liquid level detection device provided by the embodiment of the utility model is convenient to install, flexible to use, easy to operate, safe in measurement process and free of risk. The sensor 30 adopts the capacitive proximity sensor 30, and has good waterproof performance, strong anti-interference capability to liquid stuck on the surface of the sensor 30 and low misjudgment rate. Each sensor 30 is independent, does not influence each other, and the reliability is high, and the maintenance is changed conveniently. Different numbers of sensors 30 are arranged according to different application scenarios to adapt to testing accuracy of different requirements. The measurement result can be visually displayed through the display 70, so that visual measurement is realized, and the state of the current liquid level can be conveniently judged. The liquid level detection device is suitable for occasions with low requirements on related liquid level detection precision, such as large-scale reservoirs, swimming pools, reservoirs, chemical fertilizers of agricultural machinery equipment or fuel oil and the like, is high in detection efficiency, and further has a full liquid level early warning function.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a liquid level detection device, its characterized in that includes container, power, controller and a plurality of sensor, the container is used for holding the liquid that awaits measuring, the controller respectively with the power with the sensor is connected, the sensor according to the depth direction interval of container sets up, every the sensor respectively with the container is connected, every the sensor is used for quilt the state of awaiting measuring liquid submergence down to the controller output first level signal, the sensor is used for exposing under the state of the liquid that awaits measuring to controller output second level signal, the controller is used for the basis first level signal with the second level signal acquires the liquid level height of the liquid that awaits measuring.

2. The fluid level detection apparatus of claim 1, wherein the sensor is a capacitive proximity sensor.

3. The apparatus of claim 1, wherein a signal line is connected to each sensor, and an end of the signal line remote from the sensor is connected to the controller.

4. The fluid level sensing apparatus of claim 1, wherein a plurality of said sensors are connected in parallel with said controller.

5. The fluid level detecting apparatus of claim 1, further comprising a fixed rod connected to the container, wherein the sensor is spaced apart from the fixed rod.

6. The apparatus as claimed in claim 5, wherein the fixing rod is connected to the bottom of the container, and an axial direction of the fixing rod coincides with a depth direction of the container.

7. The apparatus of claim 6, wherein the plurality of sensors includes a first sensor and a second sensor, the first sensor being closer to the bottom of the container than the second sensor, the second sensor being positioned on a predetermined fluid level line.

8. The apparatus of claim 7, further comprising an alarm connected to the controller, wherein the controller controls the alarm to emit an alarm signal in a state where the second sensor outputs a first level signal to the controller.

9. The apparatus of any one of claims 1 to 8, further comprising a display, wherein the controller is connected to the display, and the display is configured to display a liquid level depth.

10. The liquid level detecting device according to claim 9, wherein the display comprises a screen and a plurality of display cells arranged on the screen, each display cell is provided with a signal lamp therein, the signal lamp is connected with the controller, the signal lamp is used for lighting the display cells, and the number of the lighted display cells corresponds to the depth of the liquid to be detected.