Customs cargo immersion intelligent detection system based on wireless sensing technology

Abstract

The utility model provides a customs cargo immersion intelligent detection system based on a wireless sensing technology, and relates to the technical field of wireless radio frequency identification sensing, the system comprises a plurality of RFID tags deployed in a container, each RFID tag comprises an antenna, a radio frequency module and a hydrogel immersion sensitive material, and is used for sensing moisture change; the conductive path is composed of copper foils connected between the RFID tags, the copper foils are arranged above the hydrogel immersion sensitive material, and when the hydrogel immersion sensitive material absorbs water and expands, the copper foils are broken or damaged to indicate the cargo immersion state; the RFID reader is in communication connection with the RFID tag and is used for reading state information of the RFID tag and judging whether the goods are soaked in water or not according to the integrity of the conductive path; and the display module is in communication connection with the RFID reader and is used for displaying a detection result and specific position information of cargo water immersion. According to the utility model, the limitation in the traditional method is effectively overcome, and an intelligent and efficient solution is provided for customs cargo safety management.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency identification (RFID) sensing technology, and in particular to a customs cargo water immersion intelligent detection system based on wireless sensing technology. Background Technology

[0002] In today's increasingly globalized trade, international container shipping has become a vital link connecting the economies of various countries. However, this mode of transport also faces numerous challenges, among which the problems of containers falling into the water and cargo getting damp are among the key issues that urgently need to be addressed. Severe weather conditions, such as strong winds and high waves, often cause containers on deck to accidentally fall into the water, or, in the event of a maritime disaster, the containers may be damaged and flooded, directly threatening the safety and quality of the cargo. Furthermore, during long-distance ocean transport and long-term storage, cargo must also cope with condensation caused by extreme temperature changes, the so-called "container rain," which further increases the risk of cargo getting damp.

[0003] To address these issues, traditional practices include rigorously checking the dryness of goods and the environment before loading, strengthening waterproof packaging measures, and appropriately placing desiccants inside containers. Meanwhile, monitoring whether goods have been submerged in water is also crucial; however, traditional methods such as manual inspections or reliance on wired systems for real-time monitoring are not only inefficient and costly, but also fail to achieve comprehensive and accurate monitoring.

[0004] In the field of customs cargo water immersion inspection, although existing technologies have been developed, such as instrumental testing and X-ray inspection, which can quickly determine whether the cargo currently contains water without opening the container, their limitations cannot be ignored. These technologies often only capture the state at the moment of inspection and cannot trace whether the cargo has been water-immersed during transportation. In other words, they cannot effectively identify situations where the cargo may dry out due to environmental changes after being water-immersed, thus limiting the comprehensiveness and accuracy of the inspection results.

[0005] Furthermore, existing wireless sensing technologies often face the problem of excessive power consumption when handling immersion detection. Due to the need for long-term, uninterrupted monitoring and data transmission, traditional wireless communication methods often result in high power consumption of sensor devices, requiring reliance on external power supplies. This not only increases the complexity and cost of the system but also limits its application in long-distance, power-free environments.

[0006] In view of the aforementioned technical background and challenges, this utility model is dedicated to developing a customs cargo water immersion intelligent detection system based on wireless sensing technology. This system aims to monitor and accurately determine the water immersion status of goods throughout the entire transportation process through innovative wireless communication technology and intelligent sensing elements, while effectively reducing energy consumption, improving detection efficiency and accuracy, and providing a safer and more reliable guarantee for international container transportation. Utility Model Content

[0007] Therefore, the technical problem to be solved by this utility model is to overcome the limitations and high energy consumption of existing technologies in cargo water immersion detection, and to achieve accurate cargo water immersion monitoring through innovative wireless sensing technology.

[0008] To address the aforementioned technical problems, this utility model provides a customs cargo water immersion intelligent detection system based on wireless sensing technology. The system includes:

[0009] Multiple RFID tags are deployed inside the container. Each RFID tag includes an antenna, a radio frequency module, and a hydrogel water-sensitive material to sense changes in moisture.

[0010] The conductive path consists of copper foil connected between RFID tags. The copper foil is placed above the hydrogel water-sensitive material. When the hydrogel water-sensitive material absorbs water and expands, the copper foil breaks or breaks to indicate the water immersion status of the goods.

[0011] An RFID reader, which is communicatively connected to the RFID tag, is used to read the status information of the RFID tag and determine whether the goods are submerged in water based on the integrity of the conductive path.

[0012] The display module is communicatively connected to the RFID reader and is used to display the detection results and specific location information of the goods submerged in water.

[0013] In one embodiment of this utility model, the RFID tag is an RFID anti-metal tag.

[0014] In one embodiment of this utility model, the RFID tag includes an NXP U8 chip, has an antenna size of 42mm*16mm, an operating frequency range of 860MHz to 960MHz, and a reading distance between 10m and 12m.

[0015] In one embodiment of the present invention, the system further includes a reader control device for controlling the position of the RFID reader.

[0016] In one embodiment of this invention, the hydrogel water-sensitive material is disposed on the bottom or side of the RFID tag.

[0017] In one embodiment of the present invention, the conductive path further includes an insulating material layer disposed on the metal surface of the RFID tag.

[0018] In one embodiment of this utility model, the display module has a graphical interface that displays the detection results of water immersion of goods, including the specific location of the water-immersed RFID tag.

[0019] In one embodiment of this utility model, the RFID tag stores key information about the status of goods, including tag number and goods type.

[0020] In one embodiment of this utility model, the system further includes a data analysis module for analyzing and processing the data collected by the RFID reader to improve the accuracy and reliability of water immersion detection.

[0021] In one embodiment of this utility model, the system further includes an alarm module that automatically triggers an alarm signal when water immersion of goods is detected, so as to remind the operator to take remedial measures in a timely manner.

[0022] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0023] (1) Highly efficient and accurate detection capability: Through the innovative design of integrating RFID tags with hydrogel water immersion sensitive materials, the system can accurately sense and detect the water immersion status of goods inside containers. The integrity of the conductive path, as a direct indicator of water immersion detection, ensures the accuracy and reliability of the detection results, effectively overcoming the limitations and delays of traditional detection methods.

[0024] (2) Low energy consumption and long lifespan: The use of wireless communication technology eliminates the need for physical connection in data transmission between RFID tags and readers, reducing the overall energy consumption of the system.

[0025] (3) Intuitive information display and positioning: The equipped display module has a graphical interface that can intuitively display the detection results and specific location information of water-damaged goods, providing users with a convenient operating experience and efficient cargo management methods. By accurately locating water-damaged goods, users can quickly take countermeasures to reduce losses caused by water immersion and improve overall operational efficiency. Attached Figure Description

[0026] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0027] Figure 1 This is a schematic diagram of a customs cargo water immersion intelligent detection system based on wireless sensing technology provided by this utility model;

[0028] Figure 2 This is a schematic diagram showing the comparison of the hydrogel water-sensitive material encapsulated in the RFID tag before and after immersion in water (left is before immersion, right is after immersion).

[0029] Figure 3 This is a schematic diagram showing the comparison of the hydrogel water-sensitive material in this utility model before and after immersion in water (left is before immersion, right is after immersion).

[0030] Explanation of reference numerals in the accompanying drawings: 1. Container; 2. Hydrogel water-sensitive material; 2-1. Hydrogel water-sensitive material (before immersion); 2-2. Hydrogel water-sensitive material (after immersion); 3. Antenna, RF module; 4. Reader control device; 5. RFID reader; 6. Display module; 7. Graphical interface; 8. RFID tag; 9. Conductive path; 10. Copper foil. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0032] To address the limitations and high energy consumption of existing technologies in cargo immersion detection, [reference needed]. Figure 1 As shown, this utility model provides a customs cargo water immersion intelligent detection system based on wireless sensing technology. The system includes:

[0033] Multiple RFID tags 8 are deployed inside container 1. Each RFID tag 8 includes an antenna, a radio frequency module 3, and a hydrogel water-sensitive material 2 for sensing changes in moisture.

[0034] The conductive path 9 is composed of copper foil 10 connected between RFID tags 8. The copper foil 10 is placed above the hydrogel water-immersion sensitive material 2. When the hydrogel water-immersion sensitive material 2 absorbs water and expands, the copper foil 10 breaks or is damaged to indicate the water immersion status of the goods.

[0035] RFID reader 5 is connected to RFID tag 8 and is used to read the status information of RFID tag 8 and determine whether the goods are soaked in water based on the integrity of conductive path 9.

[0036] Display module 6, connected to RFID reader 5, is used to display the detection results and specific location information of goods submerged in water.

[0037] As can be seen from the above technical solution, this utility model provides a customs cargo water immersion intelligent detection system based on wireless sensing technology. By integrating multiple RFID tags and conductive paths, combined with hydrogel water immersion sensitive materials, it achieves high-precision monitoring of the water immersion status of goods. This system utilizes the non-contact reading characteristics of RFID technology, significantly reducing energy consumption and human intervention during the detection process. Simultaneously, it uses a graphical display module to intuitively display the water immersion results and location information, improving detection efficiency and accuracy. Its innovation lies in using the integrity of the conductive path as an indicator of cargo water immersion, effectively overcoming the limitations of traditional methods and providing an intelligent and efficient solution for customs cargo security management.

[0038] This system aims to achieve intelligent monitoring of the water immersion status of goods by deploying multiple RFID tags 8 inside the container 1. Each RFID tag 8 integrates an antenna, a radio frequency module 3, and a hydrogel water immersion sensitive material 2, the latter serving as the core sensing element for accurately detecting and responding to changes in moisture in the surrounding environment.

[0039] The specific design features of RFID tag 8 are as follows:

[0040] Anti-metal design: Given the prevalent metal environment inside container 1, RFID tag 8 is specially designed with an anti-metal feature (RFID tag 8 is an RFID anti-metal tag). This design aims to reduce interference from metal on radio frequency signals, ensuring that RFID tag 8 can still work stably and transmit data accurately in complex metal environments.

[0041] Hardware Specifications and Performance: The RFID tag 8 incorporates an NXP U8 chip, renowned for its high performance and reliability. The antenna size is precisely set at 42mm x 16mm to optimize signal radiation and reception efficiency. The operating frequency range is set in the ultra-high frequency band of 860MHz to 960MHz, a choice designed to achieve longer reading distances and stronger signal penetration. With this configuration, the tag's reading distance can reach 10m to 12m, meeting the needs of large-area monitoring inside containers.

[0042] As an optional implementation, RFID tags 8 store key information about the status of goods, including tag number and goods type. By storing this key information, an efficient and accurate solution for warehouse management is provided.

[0043] The core of the detection system of this utility model lies in constructing a unique conductive path 9, such as... Figure 2As shown, the conductive path 9 is composed of copper foil 10, cleverly connected between RFID tags 8, and cleverly positioned above the hydrogel water-sensitive material 2. When the hydrogel water-sensitive material 2 expands due to water absorption, the increase in its physical volume will directly cause the copper foil to break or break. This change serves as a clear signal, accurately indicating the water immersion status of the goods. Figure 3 The diagram shows a comparison of the hydrogel-sensitive material 8 before and after immersion in water.

[0044] Furthermore, to optimize system performance, another innovation of this technical solution lies in the ingenious placement of the hydrogel water-sensitive material 2 at the bottom or side of the RFID tag 8. This design choice not only ensures that the hydrogel water-sensitive material 2 can directly and effectively sense changes in moisture inside the container 1, but also improves the response speed and accuracy of the entire system.

[0045] Meanwhile, considering the potential interference of the metal surface of the RFID tag 8 to the radio frequency signal, this technical solution also introduces an insulating material layer as a key component. This insulating material layer is carefully placed on the metal surface of the RFID tag 8 to effectively reduce the interference of the metal to the radio frequency signal, thereby ensuring the stability and reliability of RFID signal transmission. This design not only improves the overall performance of the system but also enhances its applicability and reliability in complex environments.

[0046] In this embodiment, the RFID reader 5 is communicatively connected to the RFID tag 8 to read the status information of the RFID tag 8 and determine whether the goods are water-damaged based on the integrity of the conductive path 9. Specifically, the RFID reader 5 communicates wirelessly with the RFID tag 8 via radio frequency signals. When the RFID tag 8 enters the identification range of the RFID reader 5, the RFID reader 5 sends a specific radio frequency signal. After receiving the signal, the RFID tag 8 transmits its stored information back to the RFID reader 5 in the form of a radio frequency signal. After receiving the radio frequency signal from the RFID tag 8, the RFID reader 5 decodes it and extracts the goods status information stored in the RFID tag 8. This information includes, but is not limited to, the tag number, the goods type, and the water immersion status of the goods indirectly reflected by the integrity of the conductive path. After reading the status information of the RFID tag 8, the RFID reader 5 further analyzes the integrity of the conductive path 9. As mentioned above, the conductive path 8 is composed of copper foil 10 and is disposed above the hydrogel water-sensitive material 2. When the goods are not submerged in water, the conductive path 9 remains intact, and the RFID tag 8 can transmit signals normally. However, when the goods are submerged in water, the hydrogel absorbs water and expands, causing the copper foil 10 to break or become damaged, and the RFID tag 8 cannot transmit signals or the signal becomes abnormal. The RFID reader 5 can accurately determine whether the goods are submerged in water by detecting the presence or absence of signals or abnormal states.

[0047] In this embodiment, the display module 6 is communicatively connected to the RFID reader 5 and is used to display the detection results and specific location information of the goods being submerged in water. The display module 6 has a graphical interface 7, which displays the detection results of the goods being submerged in water, including the specific location of the submerged RFID tags.

[0048] Furthermore, the detection system of this utility model also includes a data analysis module for analyzing and processing the data collected by the RFID reader 5, so as to improve the accuracy and reliability of water immersion detection.

[0049] Furthermore, the detection system of this utility model also includes an alarm module, which automatically triggers an alarm signal when water immersion of goods is detected, so as to remind the operator to take remedial measures in a timely manner.

[0050] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A customs cargo water immersion intelligent detection system based on wireless sensing technology, characterized in that, include: Multiple RFID tags are deployed inside the container. Each RFID tag includes an antenna, a radio frequency module, and a hydrogel water-sensitive material to sense changes in moisture. The conductive path consists of copper foil connected between RFID tags. The copper foil is placed above the hydrogel water-sensitive material. When the hydrogel water-sensitive material absorbs water and expands, the copper foil breaks or breaks to indicate the water immersion status of the goods. An RFID reader, which is communicatively connected to the RFID tag, is used to read the status information of the RFID tag and determine whether the goods are submerged in water based on the integrity of the conductive path. The display module is communicatively connected to the RFID reader and is used to display the detection results and specific location information of the goods submerged in water.

2. The customs cargo water immersion intelligent detection system based on wireless sensing technology according to claim 1, characterized in that, The RFID tag is an RFID anti-metal tag.

3. The customs cargo water immersion intelligent detection system based on wireless sensing technology according to claim 1, characterized in that, The RFID tag contains an NXP U8 chip, has an antenna size of 42mm*16mm, operates at a frequency range of 860MHz to 960MHz, and has a reading distance of 10m to 12m.

4. The customs cargo water immersion intelligent detection system based on wireless sensing technology according to claim 1, characterized in that, The system also includes a reader control device for controlling the location of the RFID reader.

5. The customs cargo water immersion intelligent detection system based on wireless sensing technology according to claim 1, characterized in that, The hydrogel water-sensitive material is disposed on the bottom or side of the RFID tag.

6. The customs cargo water immersion intelligent detection system based on wireless sensing technology according to claim 1, characterized in that, The conductive path also includes an insulating material layer disposed on the metal surface of the RFID tag.

7. The customs cargo water immersion intelligent detection system based on wireless sensing technology according to claim 1, characterized in that, The display module has a graphical interface that displays the detection results of water immersion of goods, including the specific location of the water-immersed RFID tags.

8. The customs cargo water immersion intelligent detection system based on wireless sensing technology according to claim 1, characterized in that, The RFID tag stores key information about the status of the goods, including the tag number and the type of goods.

9. The customs cargo water immersion intelligent detection system based on wireless sensing technology according to claim 1, characterized in that, The system also includes a data analysis module for analyzing and processing the data collected by the RFID reader to improve the accuracy and reliability of water immersion detection.

10. The customs cargo water immersion intelligent detection system based on wireless sensing technology according to claim 1, characterized in that, The system also includes an alarm module that automatically triggers an alarm signal when customs detects that the goods have been submerged in water, so as to remind operators to take remedial measures in a timely manner.

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