Electronic tag for storing dangerous chemicals
By designing isolation support components and fixed brackets, the problems of electronic tag signal attenuation and unstable installation are solved, achieving stable signal transmission and wide applicability in the storage of hazardous chemicals, and providing environmental monitoring functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI REETENG INSTR EQUIP
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-07
AI Technical Summary
Existing electronic tags suffer from severe signal attenuation in hazardous chemical scenarios and have limited applicability. They cannot be stably installed on containers of different shapes and sizes and are prone to falling off.
The design employs an isolation support assembly and a fixed bracket, maintaining an air gap of 3mm to 10mm between the electronic tag circuit board and the bottom surface of the lower shell. The support column is made of insulating material, and the fixed bracket has an arc-shaped fitting surface and an elastic handle hose clamp to adapt to containers of different diameters.
It reduces the reflection and absorption of RFID signals by metal surfaces, ensuring signal stability, has a wide range of applications, is securely installed to prevent falling off, supports long-distance reading and writing, and has environmental sensing capabilities.
Smart Images
Figure CN224472039U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hazardous chemical management, specifically to electronic tags for the storage of hazardous chemicals. Background Technology
[0002] In the management of hazardous chemical storage, the accuracy and durability of labeling directly affect storage safety and management efficiency. Currently, traditional hazardous chemical labeling methods mostly use paper labels. These labels are prone to failure due to environmental factors such as moisture, corrosion, and wear, leading to blurred or lost information. Furthermore, updating information requires manual label replacement, which is cumbersome and error-prone. With the development of Internet of Things (IoT) technology, electronic tags (such as RFID tags) are gradually replacing traditional paper labels due to their large information storage capacity and rewritable nature.
[0003] However, the applicability of existing electronic tags in hazardous chemical scenarios still has some shortcomings: the circuit boards of existing electronic tags are mostly directly attached to the surface of metal containers or fixed by metal brackets. The metal surface is prone to strong reflection and absorption of RFID signals, resulting in signal attenuation, shortened reading and writing distance or even failure, affecting its performance stability. At the same time, most electronic tags are fixed by pasting or clipping, which cannot be adapted to hazardous chemical containers of different shapes and sizes such as cylindrical bottles and pipes. They are prone to falling off and are difficult to adjust after installation.
[0004] Therefore, it is necessary to invent electronic tags for the storage of hazardous chemicals to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide an electronic tag for the storage of hazardous chemicals. By using an isolation support component in conjunction with a fixed bracket, it can solve the problems of signal attenuation and limited applicable scenarios of electronic tags in the prior art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an electronic tag for hazardous chemical storage, comprising an upper shell, a lower shell, an electronic tag circuit board, a fixing bracket, and an isolation support assembly for supporting the electronic tag circuit board. The upper shell and the lower shell are connected by a detachable fastening method to form a closed outer shell. The electronic tag circuit board is disposed within the accommodating cavity formed by the upper shell and the lower shell. The fixing bracket is integrally formed at the bottom of the lower shell. The electronic tag circuit board is installed inside the lower shell through the isolation support assembly. A vertical air isolation gap of 3mm to 10mm is provided between the electronic tag circuit board and the inner bottom surface of the lower shell to reduce the risk of electromagnetic interference or leakage that may be caused by external metal surfaces.
[0007] Preferably, the isolation support assembly includes multiple support columns made of insulating material, with the lower end of each support column abutting against the inner bottom surface of the lower shell. The electronic tag circuit board has mounting holes corresponding to the positions of each support column, and the top of each support column has an internal threaded hole. The electronic tag circuit board is locked to the support column by bolts, which pass through the mounting holes. The electronic tag circuit board is suspended and fixed inside the lower shell and remains in a non-contact state with the inner bottom surface of the lower shell.
[0008] Preferably, there are four support columns, located at the four corners of the electronic tag circuit board. The inner bottom surface of the lower shell has an upwardly protruding columnar positioning boss at the corresponding position. The bottom end of the support column has an inner hole that matches the positioning boss. The diameter of the inner hole is slightly smaller than the outer diameter of the positioning boss, so that the support column is press-fitted onto the positioning boss by interference fit, thereby achieving radial limiting and axial fixation.
[0009] Preferably, the bottom surface of the fixed bracket that contacts the outer wall of the hazardous chemical container or pipeline has an arc-shaped contact surface, and elastic handle hose clamps extend from both ends of the fixed bracket. The surface of the handle hose clamp is provided with multiple holes, which are arranged along the length direction of the handle hose clamp.
[0010] Preferably, an annular sealing groove is provided at the circumferential joint of the upper shell and the lower shell. The annular sealing groove is opened on the top end face of the lower shell. An O-ring is embedded in the annular sealing groove. The circumferential edge of the upper shell is provided with a downwardly extending buckle. The top of the lower shell is provided with a stepped portion that cooperates with the buckle. The upper shell and the lower shell are detachably snapped together by the cooperation of the buckle and the stepped portion.
[0011] Preferably, the inner bottom surface of the lower shell is provided with a plurality of reinforcing ribs, which are arranged in a crisscrossing grid structure and distributed in the area between adjacent support columns.
[0012] Preferably, the edge of the electronic tag circuit board is provided with an annular groove, the depth of which is less than the thickness of the electronic tag circuit board, and the inner top surface of the upper shell is provided with a downwardly protruding annular limiting rib at the corresponding position.
[0013] Preferably, the bottom of the lower shell also integrates an environmental sensor module, which includes a temperature sensor and a gas concentration sensor.
[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0015] This utility model features an isolation support component that maintains an air gap of 3mm to 10mm between the electronic tag circuit board and the bottom surface of the lower shell. The support column is made of insulating material, which reduces the reflection and absorption of RFID signals by the metal surface and avoids the risk of electrical conductivity between the circuit and the container, thus solving the signal attenuation problem caused by metal contact in existing tags. Through the cooperation of the arc-shaped fitting surface of the fixed bracket and the elastic handle hose clamp, it can be adapted to the stable installation of cylindrical bottles or pipes of different diameters. Compared with traditional adhesive or fixed size buckles, it has a wider range of applications and can be repeatedly disassembled and adjusted. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0017] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;
[0018] Figure 2 This is a three-dimensional structural diagram of the upper shell, lower shell, and electronic tag circuit board in this utility model.
[0019] Figure 3 This is a three-dimensional structural diagram of the upper and lower shells in this utility model.
[0020] Figure 4 This is a three-dimensional structural disassembly diagram of the lower shell, electronic tag circuit board, and isolation support assembly of this utility model;
[0021] Figure 5 This is a three-dimensional sectional view of the lower shell, isolation support assembly, O-ring seal, and limiting rib of this utility model.
[0022] Legend:
[0023] 1. Enclosed outer shell; 11. Upper shell; 12. Lower shell; 13. Receiving cavity; 21. Electronic tag circuit board; 3. Fixing bracket; 31. Arc-shaped mating surface; 32. Handle hose clamp; 33. Hole; 4. Isolation support assembly; 41. Support column; 42. Mounting hole; 43. Bolt; 44. Positioning boss; 51. O-ring seal; 52. Annular sealing groove; 61. Edge; 62. Stepped part; 7. Reinforcing rib; 81. Annular groove; 82. Limiting rib. Detailed Implementation
[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0025] This utility model provides, for example Figure 1 - Figure 5 The illustrated electronic tag for hazardous chemical storage includes an upper shell 11, a lower shell 12, an electronic tag circuit board 21, a fixing bracket 3, and an isolation support assembly 4 for supporting the electronic tag circuit board 21. The upper shell 11 and the lower shell 12 are connected by a detachable fastening method to form a closed outer shell 1. The electronic tag circuit board 21 is disposed within the accommodating cavity 13 formed by the upper shell 11 and the lower shell 12. The electronic tag circuit board 21 integrates a passive RFID tag module and an information storage block. The passive RFID tag module is model MFRC522, which supports wireless reading and writing in the 13.56MHz or 915MHz frequency band. It does not require an internal power supply and can obtain energy and activate its operation through the radio frequency signal emitted by an external RFID reader / writer, enabling wireless data interaction with the reader / writer. The information storage module uses an EEPROM chip, model AT24C02, which can store core management information such as the type, batch, storage period, hazard level, emergency handling measures, and storage location of hazardous chemicals, and supports external RFID readers / writers via wireless 13.56MHz. The frequency band signal enables data reading and information updating. The fixed bracket 3 is integrally formed at the bottom of the lower shell 12. The electronic tag circuit board 21 is installed inside the lower shell 12 through the isolation support component 4. There is a vertical air isolation gap between the electronic tag circuit board 21 and the inner bottom surface of the lower shell 12. The air isolation gap is 3mm to 10mm to reduce the electromagnetic interference or leakage risk that may be caused by the external metal surface, and to ensure the normal operation of the electronic tag circuit board 21. After testing, when the gap is less than 3mm, the metal surface significantly interferes with the RFID signal, and when the gap is greater than 10mm, it results in an excessively large structural volume.
[0026] like Figure 4 and Figure 5 As shown, the isolation support assembly 4 includes multiple support columns 41 made of insulating material. The lower end of each support column 41 abuts against the inner bottom surface of the lower shell 12. The electronic tag circuit board 21 has mounting holes 42 that correspond one-to-one with the positions of each support column 41. The top of the support column 41 has an internal threaded hole. The electronic tag circuit board 21 is locked to the support column 41 by bolts 43. The bolts 43 pass through the inside of the mounting holes 42. The electronic tag circuit board 21 is suspended and fixed inside the lower shell 12, maintaining an air isolation distance of 3mm to 10mm from the inner bottom surface of the lower shell 12, preferably 5mm. Tests have shown that the RFID signal attenuation rate is no more than 15% under this distance, and the reading and writing distance can reach more than 3m. It also maintains a non-contact state with the inner bottom surface of the lower shell 12, which reduces the reflection and absorption of RFID signals by external metal surfaces and avoids the risk of electrical conductivity between the circuit and the container through insulating material, thus ensuring the stability of information transmission.
[0027] like Figure 3- Figure 5 As shown, there are four support columns 41, located at the four corners of the electronic tag circuit board 21. The inner bottom surface of the lower shell 12 has corresponding upward-protruding columnar positioning bosses 44. The bottom end of the support column 41 has an inner hole that matches the positioning boss 44. The diameter of the inner hole is slightly smaller than the outer diameter of the positioning boss 44, so that the support column 41 is press-fitted onto the positioning boss 44 through an interference fit, achieving radial limiting and axial fixation. The support column 41 is precisely installed and fixed through the positioning boss 44, ensuring the stability of the structure.
[0028] like Figure 1 - Figure 3 As shown, the bottom of the fixing bracket 3 has an arc-shaped contact surface 31 for contacting the outer wall of the hazardous chemical container or pipeline. The radius of curvature of the arc-shaped contact surface 31 ranges from 50mm to 200mm, which is suitable for cylindrical containers or pipelines with diameters from 100mm to 400mm. Both ends of the fixing bracket 3 extend into elastic handle hose clamps 32. The handle hose clamps 32 are made of 304 stainless steel strip and consist of a clamp, a clamp head, and a screw. The clamp is tightened by rotating the hose clamp screw. The surface of the handle hose clamp 32 has multiple holes 33 arranged along the length of the handle hose clamp 32. During installation, the arc-shaped contact surface 31 fits tightly against the outer wall of the container or pipeline. By adjusting the elastic contraction of the handle hose clamp 32 and the position of the holes 33, it is possible to clamp and fix cylindrical objects of different diameters, ensuring the stable installation of electronic tags on containers or pipelines and providing a reliable installation foundation for information collection.
[0029] like Figure 3 - Figure 5 As shown, an annular sealing groove 52 is provided at the circumferential joint of the upper shell 11 and the lower shell 12. The annular sealing groove 52 is opened at the top end face of the lower shell 12. An O-ring 51 is embedded in the annular sealing groove 52. The circumferential edge of the upper shell 11 is provided with a downwardly extending retaining edge 61. The top of the lower shell 12 is provided with a stepped portion 62 that cooperates with the retaining edge 61. The upper shell 11 and the lower shell 12 are detachably snapped together through the cooperation of the retaining edge 61 and the stepped portion 62. The upper shell 11 and the lower shell 12 form an interference fit through the retaining edge 61 and the stepped portion 62. The O-ring 51 is squeezed to achieve the sealing and detachable connection of the closed shell 1. At the same time, the O-ring 51 is squeezed to form a seal to prevent hazardous chemical volatiles, dust and water vapor from entering the accommodating cavity 13 and damaging the electronic tag circuit board 21, and to ensure the long-term stability of the function.
[0030] like Figure 2 - Figure 4As shown, the edge of the electronic tag circuit board 21 is provided with an annular groove 81. The depth of the annular groove 81 is less than the thickness of the electronic tag circuit board 21. The inner top surface of the upper shell 11 is provided with a downward protruding annular limiting rib 82. When the upper shell 11 and the lower shell 12 are assembled, the limiting rib 82 is embedded in the annular groove 81, forming a circumferential limit on the electronic tag circuit board 21, restricting its lateral displacement relative to the lower shell 12, avoiding the RFID antenna position shift caused by displacement and affecting signal transmission, and further ensuring the stability of information interaction.
[0031] like Figure 5 As shown, the inner bottom surface of the lower shell 12 is also provided with multiple reinforcing ribs 7. The reinforcing ribs 7 are arranged in a crisscrossing grid structure and distributed in the area between adjacent support columns 41 to enhance the bending stiffness and impact resistance of the lower shell 12, while avoiding obstruction of the air isolation space below the electronic tag circuit board 21. The bottom of the lower shell 12 also integrates an environmental sensor module, which includes a digital temperature sensor and an electrochemical gas concentration sensor. Preferably, a DS18B20 digital temperature sensor and an MQ-137 ammonia concentration sensor are used. The temperature sensor is used to monitor the ambient temperature, with a measurement range of -40℃ to 85℃. The gas concentration sensor is used to detect toxic or flammable gases produced by the volatilization of hazardous chemicals. The detection targets include one or more of ammonia, hydrogen sulfide, or volatile organic compounds. The environmental sensor module is connected to the electronic tag circuit board 21 through an I²C communication interface. The collected environmental data is encoded and stored in an EEPROM chip, and is uploaded wirelessly to an external reading and writing device along with the RFID tag information to realize active monitoring and early warning of the storage status of hazardous chemicals.
[0032] The working principle of this utility model is as follows: When in use, the label is first firmly installed on the surface of the hazardous chemical container or pipe using the fixing bracket 3. Since the bottom of the fixing bracket 3 has an arc-shaped contact surface 31, the contraction of the clamp is controlled by rotating the hose clamp screw rod to clamp the container. It can be adapted to quick clamping and stable installation on cylindrical pipes or containers of different diameters, such as the installation of a 150mm diameter liquid ammonia cylinder container, to avoid falling off due to vibration, collision or chemical corrosion.
[0033] The electronic tag circuit board 21 is suspended inside the lower shell 12 by insulating support columns 41, maintaining an air gap of 3mm to 10mm between it and the inner bottom surface of the metal lower shell 12. This reduces the reflection and interference of the container's metal surface on the RFID signal, preventing signal attenuation or reading failure. The electronic tag circuit board 21 is locked to the support columns 41 by bolts 43. The four support columns 41 are stably fixed by the interference fit of the positioning bosses 44. At the same time, the limiting ribs 82 on the inner top surface of the upper shell 11 are embedded in the annular grooves 81 on the edge of the circuit board, forming a double fixation of upper and lower clamping and circumferential limiting, restricting the lateral displacement of the electronic tag circuit board 21, ensuring its positional stability in vibration or collision environments, and ensuring the working angle and signal transmission stability of the RFID antenna.
[0034] The electronic tag circuit board 21 is a passive RFID module that supports long-distance wireless reading and writing. During daily inspections of hazardous chemical storage management, managers can use a handheld RFID reader to approach the electronic tag circuit board 21 to read hazardous chemical information. If it is necessary to update information such as storage period or storage location, an update command can be sent through the reader. After receiving the command, the tag will automatically overwrite the original information. Hazardous chemical information storage and interaction can be achieved without power supply, simplifying the installation and maintenance process. If the signal attenuation of the electronic tag circuit board 21 is too large due to electromagnetic interference, the reader will trigger an early warning prompt, and staff can check the installation position of the electronic tag circuit board 21 or adjust the isolation distance in time.
[0035] This electronic tag not only has basic information identification functions, but also enables real-time monitoring of the storage status of hazardous chemicals through miniature environmental sensors. For example, in high-temperature flammable chemical storage scenarios, the tag's built-in digital temperature sensor can periodically collect ambient temperature and write the data to the local storage area. When the temperature is detected to be continuously higher than 40°C or the gas concentration exceeds the preset safety threshold, the tag sets an abnormal status flag in the response data packet, triggering an alarm in the background management system.
[0036] The enclosed outer shell 1 is formed by the snap-fit connection of the upper shell 11 and the lower shell 12 to create a protective space for the accommodating cavity 13. An O-ring 51 is provided at the joint, which, together with the interference fit structure of the snap-fit edge 61 and the step part 62, effectively prevents external dust, moisture and volatile hazardous chemicals from entering the accommodating cavity 13, protects the electronic tag circuit board 21 from corrosion or contamination, and ensures the stability of information interaction.
[0037] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. An electronic tag for the storage of hazardous chemicals, characterized in that, It includes an upper shell (11), a lower shell (12), an electronic tag circuit board (21), a fixing bracket (3), and an isolation support assembly (4) for supporting the electronic tag circuit board (21). The upper shell (11) and the lower shell (12) are connected by a detachable fastening method to form a closed shell (1). The electronic tag circuit board (21) is disposed in the accommodating cavity (13) formed by the upper shell (11) and the lower shell (12). The fixing bracket (3) is integrally formed at the bottom of the lower shell (12). The electronic tag circuit board (21) is installed inside the lower shell (12) through the isolation support component (4). A vertical air isolation gap is provided between the electronic tag circuit board (21) and the inner bottom surface of the lower shell (12). The air isolation gap is 3mm to 10mm to reduce the electromagnetic interference or leakage risk that may be caused by the external metal surface.
2. The electronic tag for storing hazardous chemicals according to claim 1, characterized in that: The isolation support assembly (4) includes multiple support columns (41) made of insulating material. The lower end of each support column (41) abuts against the inner bottom surface of the lower shell (12). The electronic tag circuit board (21) has mounting holes (42) that correspond one-to-one with the positions of each support column (41). The top of each support column (41) has an internal threaded hole. The electronic tag circuit board (21) is locked to the support column (41) by bolts (43). The bolts (43) pass through the inside of the mounting holes (42). The electronic tag circuit board (21) is suspended and fixed inside the lower shell (12) and remains in a non-contact state with the inner bottom surface of the lower shell (12).
3. The electronic tag for storing hazardous chemicals according to claim 2, characterized in that: There are four support columns (41), which are located at the four corners of the electronic tag circuit board (21). The inner bottom surface of the lower shell (12) is provided with an upwardly protruding columnar positioning boss (44). The bottom end of the support column (41) has an inner hole that matches the positioning boss (44). The diameter of the inner hole is slightly smaller than the outer diameter of the positioning boss (44), so that the support column (41) is pressed onto the positioning boss (44) by interference fit, thereby achieving radial limiting and axial fixing.
4. The electronic tag for storing hazardous chemicals according to claim 1, characterized in that: The bottom of the fixed bracket (3) is provided with an arc-shaped contact surface (31) for contacting the outer wall of the hazardous chemical container or pipeline. Both ends of the fixed bracket (3) extend out elastic handle hose clamps (32). The surface of the handle hose clamps (32) is provided with multiple holes (33), which are arranged along the length direction of the handle hose clamps (32).
5. The electronic tag for storing hazardous chemicals according to claim 1, characterized in that: An annular sealing groove (52) is provided at the circumferential joint of the upper shell (11) and the lower shell (12). The annular sealing groove (52) is opened on the top end face of the lower shell (12). An O-ring (51) is embedded in the annular sealing groove (52). The circumferential edge of the upper shell (11) is provided with a downwardly extending buckle (61). The top of the lower shell (12) is provided with a stepped part (62) that cooperates with the buckle (61). The upper shell (11) and the lower shell (12) are detachably snapped together by the cooperation of the buckle (61) and the stepped part (62).
6. The electronic tag for storing hazardous chemicals according to claim 1, characterized in that: The inner bottom surface of the lower shell (12) is also provided with a plurality of reinforcing ribs (7), which are arranged in a grid-like structure and distributed in the area between adjacent support columns (41).
7. The electronic tag for storing hazardous chemicals according to claim 1, characterized in that: The edge of the electronic tag circuit board (21) is provided with an annular groove (81), the depth of the annular groove (81) is less than the thickness of the electronic tag circuit board (21), and the inner top surface of the upper shell (11) is provided with a downward protruding annular limiting rib (82).
8. The electronic tag for storing hazardous chemicals according to claim 1, characterized in that: The bottom of the lower shell (12) is also integrated with an environmental sensor module, which includes a temperature sensor and a gas concentration sensor.