Liquid leakage detection system

Abstract

The utility model provides a liquid leakage detection system comprising a plurality of liquid leakage sensing units, each liquid leakage sensing unit comprises a humidity-dependent sensor, and each liquid leakage sensing unit is arranged on the outer surface of a container to be detected; and the signal processing unit is used for outputting a warning signal after the change of the liquid leakage signal output by the liquid leakage sensing unit exceeds a first range. According to the liquid leakage detection system provided by the utility model, liquid leakage detection is performed on the outer surface of the container to be detected through the humidity-dependent sensor, and a liquid leakage signal is output to the signal processing unit. The signal processing unit judges whether the to-be-detected container leaks liquid or not according to whether the change of the liquid leakage signal exceeds a first range or not. Due to the fact that the humidity-dependent sensor has the excellent performance of being high in response speed, high in sensitivity, low in detection lower limit and the like, efficient and accurate liquid leakage detection is achieved.

Description

Technical Field

[0001] The utility model relates to the field of liquid leakage detection, in particular to a liquid leakage detection system. Background Art

[0002] In industrial production, during the process of covering and sealing containers, it often occurs that the sealing is not tight, resulting in liquid leakage. Therefore, after the production process of covering and sealing containers, liquid leakage detection is required. For example, the electrolyte of power batteries is sealed with a cover plate, and the internal liquid of wine and beverage bottles is sealed with a bottle stopper.

[0003] However, the prior art usually uses manual visual inspection to identify liquid leakage. This method not only has low efficiency, but also after long-term observation by operators, it is easy to cause missed detection or misdetection due to eye fatigue.

[0004] Therefore, providing an efficient and accurate liquid leakage detection system has become a technical problem that the industry urgently needs to solve. Summary of the Utility Model

[0005] The technical problem solved by the utility model is to provide a liquid leakage detection system for efficient and accurate liquid leakage detection.

[0006] To solve the above technical problem, an embodiment of the utility model provides a liquid leakage detection system, including:

[0007] A plurality of liquid leakage sensing units, each of the liquid leakage sensing units includes a humidity sensor, and each of the liquid leakage sensing units is arranged on the outer surface of the container to be detected;

[0008] A signal processing unit, configured to output a warning signal after the change of the liquid leakage signal output by the liquid leakage sensing unit exceeds a first range.

[0009] Optionally, each of the liquid leakage sensing units is specifically arranged at the sealing position on the outer surface of the container to be detected.

[0010] Optionally, the humidity sensor includes a substrate, a collection electrode located on the substrate, and a humidity-sensitive material layer located on the surface of the substrate and the surface of the collection electrode.

[0011] Optionally, the substrate includes at least any one of a glass substrate, a ceramic substrate, and a polymer substrate.

[0012] Optionally, the collection electrode includes at least one or a combination of two of an interdigital electrode and a parallel electrode.

[0013] Optionally, the humidity-sensitive material layer includes at least any one of a two-dimensional material layer, a humidity-sensitive polymer layer, a humidity-sensitive polyelectrolyte layer, and a ceramic material layer.

[0014] Optionally, the two-dimensional material layer includes at least any one of a two-dimensional titanium carbide layer, a graphene layer, and a graphene oxide layer.

[0015] Optionally, the liquid leakage signal is a capacitance signal.

[0016] Optionally, the liquid leakage signal is a resistance signal.

[0017] Optionally, it further includes an alarm unit for alarming according to the warning signal.

[0018] Optionally, the alarm unit includes at least any one or a combination of a horn, a display, and an alarm lamp.

[0019] Optionally, at least one of the liquid leakage sensing units is disposed on the outer surface of each container to be detected.

[0020] Optionally, the signal processing unit is configured to obtain a liquid leakage signal output by at least one liquid leakage sensing unit on the outer surface of the container to be detected.

[0021] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0022] In the liquid leakage detection system of the technical solution of the present invention, the outer surface of the container to be detected is detected for liquid leakage by a humidity sensor, and a liquid leakage signal is output to the signal processing unit. The signal processing unit determines whether the container to be detected leaks according to whether the change of the liquid leakage signal exceeds a first range. Since the humidity sensor has excellent performance such as a fast response speed, high sensitivity, and a low detection lower limit, efficient and accurate liquid leakage detection is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural diagram of a liquid leakage detection system provided by an embodiment of the present invention;

[0024] FIG. 2(a) is a structural diagram of a humidity sensor provided by an embodiment of the present invention;

[0025] FIG. 2(b) is a structural diagram of a humidity sensor provided by an embodiment of the present invention;

[0026] Figure 3 is a structural diagram of a liquid leakage detection system provided by an embodiment of the present invention.

[0027] Reference Signs:

[0028] 10 - Liquid leakage sensing unit;

[0029] 11 - Substrate;

[0030] 12 - Acquisition electrode;

[0031] 13 - Humidity - sensitive material layer;

[0032] 20 - Signal processing unit;

[0033] 30 - Alarm unit;

[0034] V1 - Leakage signal;

[0035] V2 - Warning signal. Detailed implementation manners

[0036] As described in the background art, the existing leakage detection means have the problems of low efficiency and low accuracy. The specific reasons are as follows:

[0037] The prior art usually uses the manual visual inspection method for leakage detection. On the one hand, this method has low efficiency and is difficult to meet the requirements of industrial production. On the other hand, after long - time observation, the operator is prone to miss - detection or mis - detection due to eye fatigue, resulting in a significant reduction in detection accuracy, especially for the detection of leakage of trace colorless liquids.

[0038] Based on the above - determined reasons, the inventor of the present utility model proposed a new leakage detection system.

[0039] Figure 1 The following is the structural diagram of the leakage detection system provided by the embodiment of the present utility model. The leakage detection system provided by the present utility model will be described below with reference to the accompanying drawings:

[0040] Please refer to Figure 1 , the leakage detection system provided by the embodiment of the present utility model includes:

[0041] A plurality of leakage sensing units 10, the leakage sensing unit 10 includes a humidity - sensitive sensor, and each leakage sensing unit 10 is arranged on the outer surface of the container to be detected;

[0042] A signal processing unit 20, configured to output a warning signal V2 after the change of the leakage signal V1 output by the leakage sensing unit 10 exceeds a first range.

[0043] Through the above - mentioned technical solutions, the embodiment of the present utility model can achieve efficient and accurate leakage detection. The specific reasons are as follows:

[0044] Since the liquid leakage sensor is disposed on the outer surface of the container to be detected, once liquid leakage occurs in the container to be detected, a large number of water molecules in the leaked liquid will act on the liquid leakage sensing unit 10. After the liquid leakage sensing unit 10 comes into contact with a large number of water molecules, the conduction circuit inside the device will change, resulting in a change in the liquid leakage signal V1 output by itself. The signal processing unit 20 is configured to receive and detect the liquid leakage signal V1 output by the liquid leakage sensing unit 10. If the change in the liquid leakage signal V1 exceeds the first range, it indicates that a large number of water molecules are in contact with the liquid leakage sensing unit 10, that is, liquid leakage has occurred in the container to be detected.

[0045] It should be noted that the liquid leakage detection of the container to be detected all occurs in actual industrial production, that is, the liquid leakage detection is carried out in a professional production workshop, excluding other factors that may cause a change in the liquid leakage signal V1. Therefore, if the change in the liquid leakage signal V1 output by the liquid leakage sensing unit 10 exceeds the first range, it can prove that liquid leakage has occurred in the container to be detected. Among them, the scenarios that require liquid leakage detection at least include: detecting electrolyte leakage in the power battery cover plate, detecting beverage leakage in the wine and beverage bottle with a bottle stopper, etc.

[0046] Furthermore, the liquid leakage sensing unit 10 includes a humidity sensor. Therefore, due to the excellent performance of the humidity sensor such as fast response speed, high sensitivity, and low detection limit, even if only a small amount of liquid leaks from the container to be detected, it will react violently with the humidity-sensitive material in the humidity sensor, causing the change in the liquid leakage signal V1 to exceed the first range. Finally, the warning signal V2 is output through the signal processing unit 20 to detect the liquid leakage phenomenon of the container to be detected, realizing efficient and accurate liquid leakage detection of the container to be detected.

[0047] To make the above objects, features, and beneficial effects of the present invention more obvious and understandable, the following detailed description will be given to the specific embodiments of the present invention with reference to the accompanying drawings.

[0048] As a specific implementation manner, each liquid leakage sensing unit 10 is disposed at the sealing position on the outer surface of the container to be detected. When there is a liquid leakage phenomenon in the container to be detected, the liquid leakage can be detected faster and more accurately, further improving the efficiency and accuracy of the liquid leakage detection of the container to be detected.

[0049] As a specific implementation manner, at least one humidity sensor is disposed at the sealing position of each container to be detected. Specifically, only one humidity sensor can be disposed at the sealing position of each container to be detected, or multiple humidity sensors can be disposed. The number of humidity sensors disposed at the sealing position of each container to be detected can be set according to requirements and will not be limited herein.

[0050] As a specific implementation, the signal processing unit 20 is configured to obtain a leakage signal V1 output by the humidity sensor at the sealing position of at least one container to be tested. Specifically, one signal processing unit 20 only obtains a leakage signal V1 output by the humidity sensor at the sealing position of one container to be tested, or one signal processing unit 20 can obtain leakage signals V1 output by humidity sensors at the sealing positions of multiple containers to be tested. The number of leakage signals V1 output by the humidity sensor obtained by each signal processing unit 20 can be set according to requirements and is not limited herein. Among them, the signal processing unit 20 includes any one of a single-chip microcomputer, a data processing chip, or a system-on-chip, and can be specifically selected according to requirements and is not limited herein.

[0051] Fig. 2(a) is a structural diagram of the humidity sensor provided by the embodiment of the present invention.

[0052] Fig. 2(b) is a structural diagram of the humidity sensor provided by the embodiment of the present invention.

[0053] Please refer to Fig. 2(a) and Fig. 2(b). As a specific implementation, the humidity sensor includes a substrate 11, a collection electrode 12 located on the substrate 11, and a humidity-sensitive material layer 13 located on the surfaces of the substrate 11 and the collection electrode 12. The specific working principle of the humidity sensor is as follows: The collection electrode 12 includes two contact terminals to be respectively connected to the ground terminal and the signal receiving end of the signal processing unit 20. The humidity sensor outputs the leakage signal V1 through the two contact terminals of the collection electrode 12. When the humidity-sensitive material layer 13 contacts water molecules, it will change the conductive path inside the sensor, thereby changing the leakage signal V1 output by the collection electrode 12.

[0054] Specifically: The substrate 11 includes at least any one of a glass substrate 11, a ceramic substrate 11, and a polymer substrate 11. The collection electrode 12 includes at least one or a combination of two of interdigital electrodes and parallel electrodes. The humidity-sensitive material layer 13 includes at least any one of a two-dimensional material layer, a humidity-sensitive polymer layer, a humidity-sensitive polyelectrolyte layer, and a ceramic material layer. Of course, the humidity-sensitive material layer 13 can also include other materials that can react with water molecules and is not limited herein.

[0055] Among them, the two-dimensional material layer includes at least any one of a two-dimensional titanium carbide layer, a graphene layer, and a graphene oxide layer; the humidity-sensitive polymer layer includes at least any one of a polyvinyl alcohol layer and polyethylene glycol; the humidity-sensitive polyelectrolyte includes at least any one of lithium chloride and potassium chloride; the ceramic material includes at least any one of iron oxide and alumina.

[0056] In addition to setting a single two-dimensional material layer, a humidity-sensitive polymer layer, a humidity-sensitive polyelectrolyte layer, or a ceramic material layer for the humidity-sensitive material layer 13, different materials can also be compounded to form a composite humidity-sensitive material. For example, a two-dimensional titanium carbideene / polydopamine composite humidity-sensitive material obtained by compounding two-dimensional titanium carbideene and polydopamine. Of course, in addition to the above composite humidity-sensitive materials, composite humidity-sensitive materials obtained by compounding other materials can also be included. The specific materials can be selected according to requirements and are not limited here.

[0057] As a specific embodiment, the leakage signal V1 output by the humidity sensor is specifically a capacitance signal. When water molecules act on the humidity-sensitive material of the humidity sensor, it will change the magnitude of the capacitance signal output by the humidity sensor. When the change in the capacitance signal output by the humidity sensor exceeds the first range, it indicates that the container to be detected has liquid leakage.

[0058] As a specific embodiment, the leakage signal V1 output by the humidity sensor can also be specifically a resistance signal. When water molecules act on the humidity-sensitive material of the humidity sensor, it will change the magnitude of the resistance signal output by the humidity sensor. When the change in the resistance signal output by the humidity sensor exceeds the first range, it indicates that the container to be detected has liquid leakage.

[0059] Among them, the specific value of the first range can be adjusted according to the specific material of the humidity-sensitive material layer 13. For example, when the humidity-sensitive material layer 13 of the humidity sensor uses a two-dimensional titanium carbideene layer, the resistance signal will increase from 1500Ω to 2000Ω after the two-dimensional titanium carbideene layer contacts water molecules; when the humidity-sensitive material layer 13 of the humidity sensor uses a polydopamine / two-dimensional titanium carbideene composite material layer, the resistance signal will decrease from 10 9 Ω to 10 7 Ω - 10 6 Ω.

[0060] Figure 3 It is a structural diagram of the liquid leakage detection system provided by the embodiment of the present invention.

[0061] Please refer to Figure 3, As a specific embodiment, the liquid leakage detection system further includes an alarm unit 30. The alarm unit 30 is configured to give an alarm according to the warning signal V2. The alarm unit 30 includes at least any one or a combination of a horn, a display, and an alarm light. For example, the alarm unit 30 may only include a horn, a display, or an alarm light. The alarm unit 30 may also include a horn and a display, or a horn and an alarm light, or a display and an alarm light, or a horn, a display, and an alarm light. When the horn receives the warning signal V2, it will automatically play a pre-set voice to inform the staff that a liquid leakage has occurred. When the display receives the warning signal V2, it will automatically display a warning message to remind the staff that a liquid leakage has occurred. When the alarm light receives the warning signal V2, it will blink intermittently to warn the staff that a liquid leakage has occurred.

[0062] Of course, in addition to the above-mentioned alarm devices, the alarm unit 30 may also include other types of alarm devices, and the specific devices can be selected according to requirements and are not limited herein.

[0063] In summary, the liquid leakage detection system provided by the embodiment of the present invention uses a humidity sensor to detect liquid leakage on the outer surface of the container to be detected and outputs a liquid leakage signal to the signal processing unit. The signal processing unit determines whether the container to be detected leaks by judging whether the change of the liquid leakage signal exceeds the first range. Due to the excellent performance of the humidity sensor, such as fast response speed, high sensitivity, and low detection limit, efficient and accurate liquid leakage detection is achieved.

[0064] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A liquid leakage detection system, characterized in that: include: A plurality of liquid leakage sensing units, each of which comprises a moisture-sensitive sensor, and each of which is arranged on the outer surface of a container to be detected; The signal processing unit is used to output a warning signal after the change of the leakage signal output by the leakage sensor unit exceeds a first range.

2. The liquid leakage detection system according to claim 1, characterized in that: Each of the liquid leakage sensing units is specifically arranged at the sealing portion of the outer surface of the container to be detected.

3. The liquid leakage detection system according to claim 1, characterized in that: The humidity sensor comprises a substrate, a collection electrode located on the substrate, and a humidity sensitive material layer located on the surface of the substrate and the surface of the collection electrode.

4. The liquid leakage detection system according to claim 3, characterized in that: The substrate includes at least one of a glass substrate, a ceramic substrate and a high molecular polymer substrate.

5. The liquid leakage detection system according to claim 3, characterized in that: The collection electrodes include at least one of interdigital electrodes and parallel electrodes or a combination of both.

6. The liquid leakage detection system according to claim 3, characterized in that: The humidity sensitive material layer at least includes any one of a two-dimensional material layer, a humidity sensitive high molecular polymer layer, a humidity sensitive polyelectrolyte layer and a ceramic material layer.

7. The liquid leakage detection system according to claim 6, characterized in that: The two-dimensional material layer includes at least any one of a two-dimensional titanium carbonene layer, a graphene layer and a graphene oxide layer.

8. The liquid leakage detection system according to claim 1, characterized in that: The liquid leakage signal is a capacitance signal.

9. The liquid leakage detection system according to claim 1, characterized in that: The liquid leakage signal is a resistance signal.

10. The liquid leakage detection system according to claim 1, characterized in that: Also includes: An alarm unit is used to issue an alarm according to the alarm signal.

11. The liquid leakage detection system according to claim 10, characterized in that: The alarm unit at least includes: any one or more combinations of a speaker, a display and an alarm light.

12. The liquid leakage detection system according to claim 1, characterized in that: At least one leakage sensor unit is arranged on the outer surface of each container to be detected.

13. The liquid leakage detection system according to claim 1, characterized in that: The signal processing unit is used to obtain a leakage signal output by a leakage sensor unit on the outer surface of at least one container to be detected.

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