CN110763405A - Water leakage detection device - Google Patents
Water leakage detection device Download PDFInfo
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- CN110763405A CN110763405A CN201911236557.4A CN201911236557A CN110763405A CN 110763405 A CN110763405 A CN 110763405A CN 201911236557 A CN201911236557 A CN 201911236557A CN 110763405 A CN110763405 A CN 110763405A
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
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Abstract
The embodiment of the invention provides a water leakage detection device, which mainly comprises: the device comprises a first conductive unit, a second conductive unit, an ADC (analog to digital converter) sampling circuit and a singlechip; the first conductive unit and the second conductive unit are arranged on the inner wall of the sealed tank body in a non-connected mode; the ADC sampling circuit is connected with the first conductive unit and used for collecting voltage at the connection position of the first conductive unit and the ADC sampling circuit; the single chip microcomputer is connected with the ADC sampling circuit and used for detecting the change of the voltage to judge whether water leakage exists. When the sealed tank body intakes water, can pass through first electrically conductive unit and the electrically conductive unit of second in order to make first electrically conductive unit and the electrically conductive unit of second switch on and form first resistance, thereby lead to the change of voltage through detecting whether the change of voltage can detect sealed tank body leaks, has realized the real-time detection of leaking of sealed tank body, in time avoids because of leaking the internal installation that causes impaired.
Description
Technical Field
The embodiment of the invention relates to a detection device, in particular to a water leakage detection device.
Background
With the more and more deep underwater research of people, underwater equipment is widely applied to daily life, scientific research and industrial exploration of people. Generally, in order to prevent the electric devices from being damaged by water, a power supply system, an electric line, and the like are generally placed in a sealed tank body. However, due to the existence of water pressure, the more deep the underwater equipment is in the water, the higher the water pressure is, once the sealed tank body is deformed or leaked, water enters the tank body, and a power supply system, an electric circuit and electric equipment are seriously damaged, so that very serious property loss is caused.
In order to detect the water leakage phenomenon in time, reduce the potential safety hazard, avoid the loss of property, the detection device that leaks at present mainly sets up a plurality of check points, inserts a resistance and parallelly connected power, judges the condition of leaking through the change of the partial pressure value after the check point switches on, but the check point can not detect the phenomenon of intaking in all directions comprehensively, very easily takes place because of can not detect the circuit damage and the loss of property that the phenomenon of leaking leads to in time.
Disclosure of Invention
In view of this, the present invention provides a water leakage detection device to detect whether water leakage occurs in a sealed tank in real time.
The water leakage detection device provided by the embodiment of the invention comprises: the device comprises a first conductive unit, a second conductive unit, an ADC (analog to digital converter) sampling circuit and a singlechip;
the first conductive unit and the second conductive unit are arranged on the inner wall of the sealed tank body in a non-connected mode;
the ADC sampling circuit is connected with the first conductive unit and used for collecting voltage at the connection position of the first conductive unit and the ADC sampling circuit;
the single chip microcomputer is connected with the ADC sampling circuit and used for detecting the change of the voltage to judge whether water leakage exists.
Preferably, the first conductive unit and the second conductive unit are both arranged on a flexible circuit board, and the flexible circuit board is attached to the inner wall of the sealed tank body.
Furthermore, the flexible circuit board is attached to the inner wall of the sealed tank body in a circle along the circumferential direction of the inner wall to form a ring.
Further, the first conductive unit is a first conductive metal wire deposited on the flexible circuit board;
the second conductive unit is a second conductive metal wire deposited on the flexible circuit board;
when water flows through or floods, the first conductive unit and the second conductive unit are conducted to form a first resistor.
Further, the first/second conductive metal lines are copper or nickel.
Preferably, the ADC sampling circuit includes: the power supply, the second resistor, the third resistor and the analog-to-digital converter;
the power supply is connected with one end of the second resistor;
the other end of the second resistor is connected with the first conductive unit, the analog-to-digital converter and one end of the third resistor;
the other end of the third resistor is grounded.
Further, the second conductive element is grounded.
Preferably, the ADC sampling circuit further includes a capacitor, one end of the capacitor is connected to the analog-to-digital converter, and the other end of the capacitor is grounded.
Preferably, the single chip microcomputer is connected with the analog-to-digital converter and used for reading the analog voltage acquired by the analog-to-digital converter and converting the analog voltage into a numerical voltage so as to detect the change of the voltage.
Preferably, the first conductive unit and the second conductive unit are provided with water absorption devices.
According to the water leakage detection device provided by the embodiment of the invention, when water enters the sealed tank body, the first conductive unit and the second conductive unit are conducted through the first conductive unit and the second conductive unit to form the first resistor, so that the voltage at the connection part of the first conductive unit and the ADC sampling circuit is changed, whether water leaks from the sealed tank body can be detected by detecting the change of the voltage value, the real-time water leakage detection of the sealed tank body is realized, and the damage of an internal device caused by water leakage is avoided in time.
Drawings
Fig. 1 is a schematic structural diagram of a water leakage detection device according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a water leakage detection device according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a sealed can according to a second embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a sealed can according to a second embodiment of the present invention;
FIG. 5 is a schematic view of a water leakage detection device according to an alternative embodiment of the present invention;
fig. 6 is a schematic structural diagram of a water leakage detection device according to another alternative embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It is also to be noted that, 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. And in order to avoid obscuring the invention with unnecessary detail, only the structures and/or process steps that are germane to the scheme according to the present invention are shown in the drawings, while other details that are not germane to the present invention are omitted.
Furthermore, the terms "first," "second," and the like may be used herein to describe various orientations, actions, steps, elements, or the like, but the orientations, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step or element from another direction, action, step or element. For example, without departing. With the scope of the present invention, the first conductive element may be referred to as a second conductive element, and similarly, the second conductive element may be referred to as a first conductive element. The first conductive element and the second conductive element are both conductive elements, but are not the same conductive element. The terms "first", "second", etc. 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, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Example one
Fig. 1 is a schematic structural diagram of a water leakage detection device according to an embodiment of the present invention, which is applicable to water leakage detection of a sealed tank body. The water leakage detection device provided by the embodiment of the invention comprises: the device comprises a first conductive unit 100, a second conductive unit 200, an ADC sampling circuit 300 and a single chip microcomputer 400.
Specifically, the first conductive unit 100 and the second conductive unit 200 are not connected to each other and disposed on the inner wall of the sealed tank.
Further, the ADC sampling circuit 300 is connected to the first conductive unit 100, and is configured to collect a voltage at a connection point of the first conductive unit 100 and the ADC sampling circuit 300.
Preferably, the ADC sampling circuit 300 includes: a power supply 301, a second resistor 302, a third resistor 303, and an Analog to Digital Converter (ADC) 304.
A power supply 301 is connected with one end of the second resistor 302; the other end of the second resistor 302 is connected to one end of the first conductive unit 100, the analog-to-digital converter 304 and the third resistor 303; the other end of the third resistor 303 is grounded.
Further, the second conductive element 200 is grounded.
The analog-to-digital converter 304 is connected to the first conductive element 100, and can detect an analog voltage at the connection of the first conductive element 100 and the ADC sampling circuit 300.
Further, the single chip 400 is connected to the ADC sampling circuit 300, and is configured to detect a change in the voltage to determine whether water leaks. The single chip 400 is connected to the analog-to-digital converter 304 in the ADC sampling circuit 300, and is configured to receive the analog voltage detected by the analog-to-digital converter 304 and convert the analog voltage into a digital voltage.
When the water leakage phenomenon does not occur in the sealed tank body and the interior of the tank body is kept dry, the first conductive unit 100 and the second conductive unit 200 are not conducted, and the power supply 301 only supplies power to the second resistor 302 and the third resistor 303 and analog-to-digital converter 304. Preferably, the power supply 301 is a 5V power supply, such as a storage battery, or an electric device connected to the sealed tank body through a power conversion module, and shares the same power supply with the electric device. The second resistor 302 and the third resistor 303 both have a resistance of 106Ohm, then the voltage value at the connection of the first conductive element 100 and the ADC sampling circuit 300, which is collected by the analog-to-digital converter 304, is about 2.5V.
When water leaks from the sealed can, water may flow through or flood the first conductive unit 100 and the second conductive unit 200. When water flows through or floods the first conductive unit 100 and the second conductive unit 200, the two are conducted to form a first resistor, which is equivalent to the first resistor being connected in parallel with the third resistor 303, so that the voltage division between the first resistor and the third resistor 303 is reduced, and therefore, the voltage at the connection point of the first conductive unit 100 and the ADC sampling circuit 300 is increased. Therefore, the voltage change can be detected by the single chip microcomputer 400 to judge whether the sealed tank body leaks water.
According to the water leakage detection device provided by the embodiment of the invention, when water enters the sealed tank body, the first conductive unit and the second conductive unit are conducted through the first conductive unit and the second conductive unit to form the first resistor, so that the voltage at the joint of the first conductive unit and the ADC sampling circuit is changed, whether water leaks from the sealed tank body can be detected by detecting the change of the voltage, the real-time water leakage detection of the sealed tank body is realized, and the damage of an internal device caused by water leakage is avoided in time.
Example two
Fig. 2 is a schematic structural diagram of a water leakage detection device according to a second embodiment of the present invention, which is suitable for detecting water leakage of a sealed tank. The water leakage detection device provided by the embodiment of the invention comprises: the device comprises a first conductive unit 100, a second conductive unit 200, an ADC sampling circuit 300 and a single chip microcomputer 400.
Specifically, as shown in fig. 3, the first conductive unit 100 and the second conductive unit 200 are not connected to each other and are disposed on the inner wall of the sealed tank. The sealed tank body comprises a tank body 1 and a tank cover 2, wherein the tank body 1 can be made of stainless steel, aluminum alloy or acrylic materials so as to avoid rusting after being placed in water for a long time; the tank cover 2 is provided with a sealing ring to be better fixed on the tank body 1 and prevent water from entering the tank cover 2.
In order to comprehensively detect whether the sealed tank body leaks water, the water leakage detection devices in the embodiment of the invention are arranged near the openings at the two sides of the sealed tank body, and the two water leakage detection devices can share one single chip microcomputer 400 or share one set of ADC sampling circuit 300 and the single chip microcomputer 400. The ADC sampling circuit 300 and the single chip microcomputer 400 are arranged in a sealing box 3 in the sealed tank body.
Preferably, the ADC sampling circuit 300 and the single chip 400 may also be suspended in the sealed tank.
Preferably, the first conductive unit 100 and the second conductive unit 200 are both disposed on the flexible circuit board 10, and the flexible circuit board 10 is attached to the inner wall of the sealed tank.
Further, in order to detect water leakage more comprehensively and timely, the flexible circuit board 10 is attached to the inner wall of the sealed tank body in a circle in the circumferential direction to ensure that water entering along the opening of the tank body 1 passes through the flexible circuit board 10. Preferably, the flexible circuit board 10 is disposed in parallel with the opening of the can body 1.
Preferably, as shown in fig. 4, the flexible circuit board 10 may also be attached along the inner wall of the sealed tank in a spiral shape, so that the water leakage detection may be performed more comprehensively and timely.
The Flexible Printed Circuit board 10 (FPC) is a Flexible Printed Circuit board made of polyimide or polyester film and has high reliability and excellent flexibility, and has the characteristics of high wiring density, light weight, thin thickness and good bending property.
Further, the first conductive unit 100 is a first conductive metal line deposited on the flexible circuit board 10; the second conductive unit 200 is a second conductive metal line deposited on the flexible circuit board 10. When water flows or overflows, the first conductive unit 100 and the second conductive unit 200 are conducted to form a first resistor.
Specifically, the first/second conductive metal lines are formed by electrically depositing conductive metal on the flexible circuit board 10. Preferably, the material of the first/second conductive metal lines in the embodiment of the present invention is copper or nickel.
The ADC sampling circuit 300 is connected to the first conductive unit 100, and is configured to collect a voltage at a connection point of the first conductive unit 100 and the ADC sampling circuit 300.
Specifically, the ADC sampling circuit 300 includes: a power supply 301, a second resistor 302, a third resistor 303 and an analog-to-digital converter 304.
A power supply 301 is connected with one end of the second resistor 302; the other end of the second resistor 302 is connected to one end of the first conductive unit 100, the analog-to-digital converter 304 and the third resistor 303; the other end of the third resistor 303 is grounded.
Further, the second conductive element 200 is grounded.
When the water leakage phenomenon does not occur in the sealed tank body and the interior of the tank body is kept dry, the first conducting unit 100 and the second conducting unit 200 are not conducted, and the power supply 301 only supplies power to the second resistor 302, the third resistor 303 and the analog-to-digital converter 304. Preferably, the power supply 301 is a 5V power supply. The second resistor 302 and the third resistor 303 both have a resistance of 106Ohm, then the voltage at the connection of the first conductive element 100 and the ADC sampling circuit 300, which can be collected by the analog-to-digital converter 304, is about 2.5V.
When water leaks from the sealed can, water may flow through or flood the first conductive unit 100 and the second conductive unit 200. When water flows through or floods the first conductive unit 100 and the second conductive unit 200, the two are conducted to form a first resistor, which is equivalent to the first resistor being connected in parallel with the third resistor 303, so that the voltage division between the first resistor and the third resistor 303 is reduced, and therefore, the voltage at the connection point of the first conductive unit 100 and the ADC sampling circuit 300 is increased. Therefore, whether the sealed tank body leaks water can be judged by detecting the change of the voltage.
Further, the single chip 400 is connected to the ADC sampling circuit 300, and is configured to detect a change in the voltage to determine whether water leaks. The single chip microcomputer 400 is connected to the analog-to-digital converter 304 in the ADC sampling circuit 300, and is configured to read an analog voltage acquired by the analog-to-digital converter 304, and convert the analog voltage into a digital voltage to detect a change in the voltage. According to the analysis, when the voltage is detected to be obviously increased, the water leakage phenomenon of the sealed tank body can be judged.
Preferably, the first conductive unit 100 and the second conductive unit 200 are provided with water absorption devices. For example, when water flows through or floods the absorbent cotton, the water can be retained on the first conductive unit 100 and the second conductive unit 200 to maintain the conduction state therebetween, which is beneficial to the stability of detection.
According to the water leakage detection device provided by the embodiment of the invention, when water enters the sealed tank body, the first conductive unit and the second conductive unit are conducted through the first conductive unit and the second conductive unit to form the first resistor, so that the voltage at the joint of the first conductive unit and the ADC sampling circuit is changed, whether water leaks from the sealed tank body can be detected by detecting the change of the voltage through the single chip microcomputer, the conduction state of the first conductive unit and the second conductive unit is kept through the water absorption device, the detection stability is facilitated, the real-time water leakage detection of the sealed tank body is realized, and the damage of an internal device caused by water leakage is avoided in time.
In an alternative embodiment, as shown in fig. 5, which is a schematic structural diagram of an ADC sampling circuit in an alternative embodiment, the ADC sampling circuit 300 further includes a capacitor 305, where one end of the capacitor 305 is connected to the analog-to-digital converter 304, and the other end is grounded, so as to reduce a detection error of the analog-to-digital converter 304.
In another alternative embodiment, the water leakage detection device further comprises an alarm module, such as a buzzer, the alarm module is connected with the single chip microcomputer 400, and when the single chip microcomputer 400 detects that the voltage is obviously increased, an alarm signal is generated to make the buzzer sound so as to alarm.
Further, the water leakage detection device can further comprise a communication module, the communication module can be one or more of a 3G/4G/5G network transmission module and a WiFi network transmission module, the communication module is connected with the single chip microcomputer 400, and when the single chip microcomputer 400 detects that the voltage is obviously increased, the communication module is controlled to send alarm information to the server side so as to remind people of water leakage of the sealed tank body. Is favorable for reminding people of water leakage in time.
In another alternative embodiment, the single chip microcomputer itself includes an analog-to-digital converter, and has an analog-to-digital conversion function, as shown in fig. 6, the structural schematic diagram of the water leakage detection device in the another alternative embodiment is shown, the single chip microcomputer 500 in the present alternative embodiment may be a 32-bit ARM microcontroller of the model STM32F103, the single chip microcomputer 500 is internally provided with an analog-to-digital converter, and is connected to the first conductive unit 100 through an ADC interface, and is configured to collect an analog voltage at a connection point between the first conductive unit 100 and the ADC sampling circuit 300, convert the analog voltage into a numerical voltage, and detect a change in the numerical voltage to determine whether water leakage occurs. The ADC sampling circuit 300 includes a power supply 301, a second resistor 302, and a third resistor 303, which are used to provide a voltage at a connection point of the first conductive unit 100 and the ADC sampling circuit 300.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A water leakage detection device, comprising: the device comprises a first conductive unit, a second conductive unit, an ADC (analog to digital converter) sampling circuit and a singlechip;
the first conductive unit and the second conductive unit are arranged on the inner wall of the sealed tank body in a non-connected mode;
the ADC sampling circuit is connected with the first conductive unit and used for collecting voltage at the connection position of the first conductive unit and the ADC sampling circuit;
the single chip microcomputer is connected with the ADC sampling circuit and used for detecting the change of the voltage to judge whether water leakage exists.
2. The water leakage detection device of claim 1, wherein the first conductive unit and the second conductive unit are both disposed on a flexible circuit board, and the flexible circuit board is attached to an inner wall of the sealed tank body.
3. The water leakage detecting device of claim 2, wherein the flexible printed circuit is attached to the inner wall of the sealed tank in a ring shape along a circumferential direction of the inner wall.
4. The water leak detection apparatus according to claim 3,
the first conductive unit is a first conductive metal wire deposited on the flexible circuit board;
the second conductive unit is a second conductive metal wire deposited on the flexible circuit board;
when water flows through or floods, the first conductive unit and the second conductive unit are conducted to form a first resistor.
5. The water leakage detecting device of claim 4, wherein the first/second conductive wires are made of copper or nickel.
6. The water leak detection device according to claim 1, wherein the ADC sampling circuit comprises: the power supply, the second resistor, the third resistor and the analog-to-digital converter;
the power supply is connected with one end of the second resistor;
the other end of the second resistor is connected with the first conductive unit, the analog-to-digital converter and one end of the third resistor;
the other end of the third resistor is grounded.
7. The water leak detection device according to claim 6, wherein the second conductive unit is grounded.
8. The water leak detection device of claim 6, wherein the ADC sampling circuit further comprises a capacitor, one end of the capacitor is connected to the analog-to-digital converter, and the other end of the capacitor is grounded.
9. The water leakage detection device of claim 6, wherein the single chip is connected to the analog-to-digital converter, and configured to read an analog voltage collected by the analog-to-digital converter and convert the analog voltage into a digital voltage to detect a change in the voltage.
10. The water leak detection device of claim 1, wherein a water absorption device is provided on the first conductive unit and the second conductive unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911236557.4A CN110763405A (en) | 2019-12-05 | 2019-12-05 | Water leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911236557.4A CN110763405A (en) | 2019-12-05 | 2019-12-05 | Water leakage detection device |
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| CN110763405A true CN110763405A (en) | 2020-02-07 |
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| CN201911236557.4A Pending CN110763405A (en) | 2019-12-05 | 2019-12-05 | Water leakage detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432800A (en) * | 2021-06-25 | 2021-09-24 | 温尚熙 | Flexible water droplet detection device of intelligence of flexible multi-application scene |
| CN113551844A (en) * | 2021-06-21 | 2021-10-26 | 青岛海尔电冰箱有限公司 | Refrigeration device |
| CN114577404A (en) * | 2020-11-30 | 2022-06-03 | 中国科学院沈阳自动化研究所 | Flexible laminating distributing type of withstand voltage cabin under water detection system that leaks |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202158936U (en) * | 2011-06-29 | 2012-03-07 | 浙江达峰科技有限公司 | Water leakage detection device |
| WO2015184514A1 (en) * | 2014-06-05 | 2015-12-10 | D & D Isoltechnics Nv | Device and method for measuring condensation and/or advance of corrosion |
| CN205333261U (en) * | 2015-12-31 | 2016-06-22 | 惠州市亿能电子有限公司 | Weeping detection circuitry |
| CN206740327U (en) * | 2017-04-07 | 2017-12-12 | 江苏小牛电动科技有限公司 | A kind of water inlet detecting device |
-
2019
- 2019-12-05 CN CN201911236557.4A patent/CN110763405A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202158936U (en) * | 2011-06-29 | 2012-03-07 | 浙江达峰科技有限公司 | Water leakage detection device |
| WO2015184514A1 (en) * | 2014-06-05 | 2015-12-10 | D & D Isoltechnics Nv | Device and method for measuring condensation and/or advance of corrosion |
| CN205333261U (en) * | 2015-12-31 | 2016-06-22 | 惠州市亿能电子有限公司 | Weeping detection circuitry |
| CN206740327U (en) * | 2017-04-07 | 2017-12-12 | 江苏小牛电动科技有限公司 | A kind of water inlet detecting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114577404A (en) * | 2020-11-30 | 2022-06-03 | 中国科学院沈阳自动化研究所 | Flexible laminating distributing type of withstand voltage cabin under water detection system that leaks |
| CN114577404B (en) * | 2020-11-30 | 2022-12-06 | 中国科学院沈阳自动化研究所 | Flexible laminating distributing type of withstand voltage cabin under water detection system that leaks |
| CN113551844A (en) * | 2021-06-21 | 2021-10-26 | 青岛海尔电冰箱有限公司 | Refrigeration device |
| CN113432800A (en) * | 2021-06-25 | 2021-09-24 | 温尚熙 | Flexible water droplet detection device of intelligence of flexible multi-application scene |
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Application publication date: 20200207 |