CN215767272U - Liquid level measurement device in water tank and sweeping robot - Google Patents
Liquid level measurement device in water tank and sweeping robot Download PDFInfo
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- CN215767272U CN215767272U CN202121459733.3U CN202121459733U CN215767272U CN 215767272 U CN215767272 U CN 215767272U CN 202121459733 U CN202121459733 U CN 202121459733U CN 215767272 U CN215767272 U CN 215767272U
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Abstract
The utility model discloses a liquid level measuring device in a water tank, which comprises: the side wall of the water tank is provided with a mounting hole; the sensor is hermetically installed inside the water tank through the installation hole, and the detection end of the sensor is arranged in the water tank and used for measuring the height of the liquid level in the water tank. The plate electrode is in the tubular structure installation cavity, and open from top to bottom of installation cavity has the inlet opening, when the water tank rocked, because the business turn over water volume of installation cavity received the restriction, the water level variation volume in the installation cavity can reduce or slow down to reach more stable and accurate water level information.
Description
Technical Field
The utility model relates to the technical field of sweeping robots, in particular to a liquid level measuring device in a water tank and a sweeping robot.
Background
The floor sweeping robot is also called a lazy floor sweeping machine, and is an intelligent household appliance capable of automatically absorbing dust on the ground. Because it can detect factors such as room size, furniture are put, ground cleanliness to rely on built-in procedure, formulate reasonable clean route, possess certain intelligent effect. The current robot of sweeping the floor is equipped with the water tank in order to have better dust removal and clean the effect, but the current robot of sweeping the floor can't measure the height of water level in the water tank, needs the manual work to look over, if the manual work is looked over untimely, will lead to the lack of water, and then can further influence and clean the effect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a liquid level measuring device in a water tank and a sweeping robot, aiming at solving the problems in the background technology.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an in-tank liquid level measuring device comprising:
the side wall of the water tank is provided with a mounting hole;
the sensor is hermetically installed inside the water tank through the installation hole, and the detection end of the sensor is arranged in the water tank and used for measuring the height of the liquid level in the water tank.
In some embodiments, the sensor comprises: plate electrode and sensor housing, sensor housing include the front panel and the back shroud of mutual lock, and it has the installation cavity of inlet opening to open from top to bottom to form behind front panel and the back shroud lock, the plate electrode is installed in the installation cavity, be equipped with the control circuit who is used for control electrode board in the front panel, be equipped with on the front panel with the metal contact that control circuit connects.
In some embodiments, the side wall of the water tank is provided with a mounting opening, the front panel is provided with an open circular boss, a metal contact is arranged in the circular boss, and when the front panel is mounted on the water tank, the circular boss penetrates out of the mounting opening.
In some embodiments, the front panel and the mounting opening and the mounting hole of the water tank are sealed by waterproof rubber rings.
The utility model also provides a sweeping robot which comprises any one of the liquid level measuring devices in the water tank.
Drawings
FIG. 1 is a detail view of a liquid level measurement device within a tank according to some embodiments of the present application;
FIG. 2 is a schematic view of an in-tank level measurement device according to some embodiments of the present application;
the labels in the figure are: 1-electrode plate, 2-back cover plate, 3-front panel, 4-water tank, 5-mounting hole, 6-mounting hole and 7-water inlet hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
On the contrary, this application is intended to cover any alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the application as defined by the appended claims. Furthermore, in the following detailed description of the present application, certain specific details are set forth in order to provide a better understanding of the present application. It will be apparent to one skilled in the art that the present application may be practiced without these specific details.
FIG. 1 is a detail view of a liquid level measurement device within a tank according to some embodiments of the present application; FIG. 2 is a schematic view of an in-tank level measurement device according to some embodiments of the present application; the body of the liquid level measuring device in the water tank according to the embodiment of the present application will be described in detail with reference to fig. 1. It should be noted that the following examples are only for explaining the present application and do not constitute a limitation to the present application.
In the embodiment of the present application, as shown in fig. 1-2, the liquid level measuring device in the water tank 4 comprises: the side wall of the water tank 4 is provided with a mounting hole 5; and the sensor is hermetically arranged in the water tank 4 through the mounting hole 5, and the detection end of the sensor is arranged in the water tank 4 and used for measuring the height of the liquid level in the water tank 4. The sensor includes: electrode plate 1 and sensor housing, sensor housing include front panel 3 and back shroud 2 of mutual lock, and it has the installation cavity of inlet opening 7 to open from top to bottom to form behind front panel 3 and the 2 locks of back shroud, electrode plate 1 is installed in the installation cavity, be equipped with the control circuit who is used for control electrode plate 1 in the front panel 3, be equipped with on the front panel 3 with the metal contact that control circuit connects. The front panel 3 and the electrode plate 1 are waterproof by sealant, and the rear cover plate 2 and the front panel 3 are fixed by a buckle type structure.
In some embodiments, the side wall of the water tank 4 is provided with a mounting opening 6, the front panel 3 is provided with an open circular boss, a metal contact is arranged in the circular boss, and when the front panel 3 is mounted on the water tank 4, the circular boss penetrates out of the mounting opening 6. The front panel 3 and the mounting opening 6 and the mounting hole 5 of the water tank 4 are sealed by waterproof rubber rings.
The water level is obtained by detecting the resistance change between the electrodes through a control circuit by utilizing the conductivity of water (except purified water). The change in resistance between the electrodes is converted into a change in current between the electrodes or a change in voltage across the electrodes. A voltage balance electrode with a large area is arranged at the lowest end of the sensor, so that the potential of the whole water is in a relatively stable state.
The detection electrodes are uniformly or regularly arranged above the voltage balance electrode and are connected to the control circuit through a high-resistance state. When the water amount is small, only the voltage balance electrodes are in the water, and the voltages on all the detection electrodes are in an unstable or set value. When the amount of water increases, the detection electrode near the voltage balance electrode is preferentially contacted with the water, and the voltage on the detection electrode is biased toward the voltage of the voltage balance electrode. The control circuit judges whether the detection electrode is submerged or contacted by water by detecting the change of the voltage value on the detection electrode or the change of the current between the detection electrode and the voltage balance electrode. The water level or the amount of water can be obtained by determining the position of the detection electrode in advance.
In the application, an analog signal output scheme of an operational amplifier is adopted, a voltage balance electrode is connected with a positive power supply or a negative power supply, a detection electrode is connected with the in-phase end of the operational amplifier, and the inverting end of the operational amplifier is connected with 1/2 power supply voltage or other voltage values as comparison references. When the voltage balance electrode is connected with the power supply, the operational amplifier outputs positive voltage of the power supply after the detection pin is contacted with water; when the voltage balance electrode is connected with the power supply for negative voltage, the operational amplifier outputs the power supply negative voltage after the detection pin is contacted with water. Each detection electrode is used as a channel, and the output pins of the operational amplifier of each channel are connected in parallel through the same resistor. Different water levels correspond to different quantities of operational amplifier output power supply voltages, and the output voltages connected in parallel through the same resistor correspond to the height of the water level. The control system calculates the water level height by detecting the output voltage value. The output voltage value is in linear relation with the water level height.
The utility model also provides a sweeping robot which comprises any one of the liquid level measuring devices in the water tank.
The beneficial effects that liquid level measurement device, robot of sweeping floor in the water tank that this application disclosed probably brought include but are not limited to: 1. the plate electrode is in the tubular structure installation cavity, and open from top to bottom of installation cavity has the inlet opening, when the water tank rocked, because the business turn over water volume of installation cavity received the restriction, the water level variation volume in the installation cavity can reduce or slow down to reach more stable and accurate water level information.
2. The whole control circuit is sealed in the sensor shell, and only the detection electrode is reserved to be in contact with water in the water tank, so that the aim of preventing water is fulfilled.
3. The sensor is embedded into the water tank, so that the floor sweeping robot can adapt to narrow space, and the requirement for installing the sensor cannot be met outside the water tank.
4. The sensor and the control system of the floor sweeping robot are in contact by metal contacts, so that the use is simplified, and a connector lug is not required to be plugged or pulled out when water is changed in the water tank.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. An in-tank liquid level measuring device, comprising:
the side wall of the water tank is provided with a mounting hole;
the sensor is hermetically installed inside the water tank through the installation hole, and the detection end of the sensor is arranged in the water tank and used for measuring the height of the liquid level in the water tank.
2. An in-tank liquid level measuring device according to claim 1, wherein the sensor comprises: plate electrode and sensor housing, sensor housing include the front panel and the back shroud of mutual lock, and it has the installation cavity of inlet opening to open from top to bottom to form behind front panel and the back shroud lock, the plate electrode is installed in the installation cavity, be equipped with the control circuit who is used for control electrode board in the front panel, be equipped with on the front panel with the metal contact that control circuit connects.
3. The device for measuring the liquid level in the water tank according to claim 2, wherein the side wall of the water tank is provided with a mounting opening, the front panel is provided with an open circular boss, a metal contact is arranged in the circular boss, and when the front panel is mounted on the water tank, the circular boss penetrates out of the mounting opening.
4. The device for measuring the liquid level in the water tank as claimed in claim 2, wherein the front panel and the mounting opening and the mounting hole of the water tank are sealed by waterproof rubber rings.
5. A sweeping robot, characterized by comprising the liquid level measuring device in the water tank of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121459733.3U CN215767272U (en) | 2021-06-29 | 2021-06-29 | Liquid level measurement device in water tank and sweeping robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121459733.3U CN215767272U (en) | 2021-06-29 | 2021-06-29 | Liquid level measurement device in water tank and sweeping robot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215767272U true CN215767272U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121459733.3U Active CN215767272U (en) | 2021-06-29 | 2021-06-29 | Liquid level measurement device in water tank and sweeping robot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215767272U (en) |
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2021
- 2021-06-29 CN CN202121459733.3U patent/CN215767272U/en active Active
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