Rain test chamber for radio frequency tags

Abstract

The utility model discloses a kind of rain test box for radio frequency label, belong to radio frequency label production technical field, including test box, the bottom in the test box is provided with water-collecting cavity, the top in the test box is provided with temperature control box, the lower part of test box inner wall is provided with flow guide seat, the upper portion of flow guide seat is provided with placing table, driving piece for driving placing table rotation and angle adjustment is arranged between the placing table and flow guide seat, heat conduction elbow pipe is provided in the temperature control box, the water outlet end of heat conduction elbow pipe is provided with water outlet tray, the lower surface of water outlet tray is provided with multiple spray heads, the top of temperature control box inner wall is provided with temperature control unit. Rotating and angle adjustment can be carried out to placing table by setting driving piece, the temperature of temperature control box is adjusted by temperature control unit, so that the influence of rainwater of different temperature and different falling direction on radio frequency label can be simulated, and the accuracy of test is improved.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency tag production technology, specifically to a rain test chamber for radio frequency tags. Background Technology

[0002] Radio Frequency Identification (RFID) is a type of automatic identification technology that uses wireless radio frequency for non-contact, two-way data communication. It reads and writes data to a recording medium (electronic tag or RFID card) using radio frequency to achieve target identification and data exchange. It is considered one of the most promising information technologies of the 21st century. After RFID tags are manufactured, they undergo various tests, such as rain testing for outdoor use, to understand the impact of rain on the tags.

[0003] For example, Chinese utility model patent CN220751469U discloses a device for rain testing of electrical cabinets, including a rain chamber, spray pipes, drainage pipes, a trolley, a sump, a water tank, and a filter. The rain chamber is a closed box structure. The spray pipes are arranged on the top and around the rain chamber, and several nozzles are connected to the spray pipes. The nozzles can conduct rain tests on the electrical cabinet placed in the middle of the rain chamber. A drainage pipe is provided at the bottom of the rain chamber, and the sump is connected to the drainage pipe. A track is fixed in the rain chamber, and the trolley can move on the track. The water in the sump is pumped to the water tank by a water pump, and the filter is connected to the water tank. The outlet of the filter is connected to the spray pipes.

[0004] The above solution has the following shortcomings in practical use:

[0005] The proposed solution involves arranging spray pipes in a closed rain chamber to spray the top and sides of the electrical cabinet, simulating a natural rainfall environment to test the cabinet's sealing performance. However, in actual use, rainwater typically hits the surface of the RFID tag at an angle, and the temperature of the rainwater varies with the season, making the proposed solution unable to simulate this. Utility Model Content

[0006] The purpose of this invention is to provide a rain test chamber for radio frequency tags to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rain test chamber for radio frequency tags, comprising a test chamber body, a water collection chamber at the bottom of the test chamber body, a temperature control chamber at the top of the test chamber body, a flow guide seat at the lower part of the inner wall of the test chamber body, a placement platform above the flow guide seat, a driving component for rotating and adjusting the angle of the placement platform between the placement platform and the flow guide seat, a heat-conducting bend tube inside the temperature control chamber, a water outlet plate at the water outlet end of the heat-conducting bend tube, multiple spray heads on the lower surface of the water outlet plate, and a temperature control unit at the top of the inner wall of the temperature control chamber.

[0008] Preferably, the front side of the test chamber is connected to a visible door via a hinge, and the lower surface of the test chamber is provided with multiple support legs.

[0009] Preferably, the driving component includes a mounting platform, which is connected to the flow guide seat via multiple brackets. The upper surface of the mounting platform is provided with two fixing plates, and each fixing plate is rotatably connected to a sleeve and a connecting shaft. A motor is provided at the end of both the sleeve and the connecting shaft, and an adjustment seat is provided on the sleeve.

[0010] Preferably, a drive shaft is rotatably connected to the adjusting seat, a bevel gear one is provided at the bottom end of the drive shaft, a bevel gear two is meshed with one side of the bevel gear one, the bevel gear two is connected to the connecting shaft, and the top end of the drive shaft is connected to the placement platform.

[0011] Preferably, a pump body is provided on the rear side of the test chamber. The water inlet end of the pump body is connected to the water collection chamber through a water inlet pipe, and the water outlet end of the pump body is provided with a water outlet pipe. The end of the water outlet pipe extends into the interior of the temperature control box and is connected to the heat-conducting bend pipe.

[0012] Preferably, the heat-conducting bend is provided with heat-conducting fins.

[0013] Preferably, a filter plate is inserted into the front side of the test chamber, and the filter plate is located below the flow guide seat.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By setting up a driving component to rotate and adjust the angle of the placement platform, the position and angle of the RFID tag can be adjusted as needed, thereby simulating the environment of rainwater hitting the surface of the RFID tag at an angle.

[0016] The temperature of the temperature control chamber is adjusted by the temperature control unit, which can cool or heat the liquid in the heat-conducting bend, thereby simulating the effect of rainwater at different temperatures on RFID tags and improving the accuracy of the test. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is an exploded view of the drive component of this utility model;

[0020] Figure 4 This is an exploded view of the structure of the heat-conducting bend of this utility model.

[0021] In the picture:

[0022] 1. Test chamber; 2. Visual door; 3. Support legs; 4. Water collection chamber; 5. Temperature control chamber; 6. Flow guide seat; 7. Filter plate; 8. Bracket; 9. Mounting platform; 10. Fixing plate; 11. Sleeve; 12. Connecting shaft; 13. Motor; 14. Adjustment seat; 15. Drive shaft; 16. Bevel gear one; 17. Bevel gear two; 18. Placement platform; 19. Pump body; 20. Inlet pipe; 21. Outlet pipe; 22. Heat-conducting bend; 23. Heat-conducting fins; 24. Temperature control unit; 25. Water outlet tray; 26. Spray head. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution:

[0025] like Figure 1 - Figure 2As shown, a rain test chamber for RFID tags includes a test chamber 1. A water collection chamber 4 is located at the bottom of the test chamber 1. A temperature control chamber 5 is located at the top of the test chamber 1. A flow guide seat 6 is located on the lower part of the inner wall of the test chamber 1. A filter plate 7 is inserted into the front of the test chamber 1, located below the flow guide seat 6. A placement platform 18 is located above the flow guide seat 6. A drive component for rotating and adjusting the angle of the placement platform 18 is located between the placement platform 18 and the flow guide seat 6. A heat-conducting bend 22 is installed inside the temperature control chamber 5, with the outlet end of the heat-conducting bend 22 extending through the temperature control chamber 5 into the test chamber. The body 1 is equipped with a water outlet tray 25, and multiple spray nozzles 26 are provided on the lower surface of the water outlet tray 25. A temperature control unit 24 is provided on the top of the inner wall of the temperature control chamber 5. By setting a driving component, the placement platform 18 can be rotated and its angle adjusted, thereby adjusting the position and angle of the RFID tag as needed. This can simulate the environment of rainwater hitting the surface of the RFID tag at an angle. The temperature control unit 24 adjusts the temperature of the temperature control chamber 5, thereby cooling or heating the liquid in the heat-conducting bend 22, thus simulating the effect of rainwater at different temperatures on the RFID tag and improving the accuracy of the test.

[0026] Furthermore, to improve the accuracy of the test, a sensor is installed on the sprinkler head 26 to detect the water output of the sprinkler head 26. In some implementations, the sensor is installed inside the drip nozzles of the sprinkler head 26. The sprinkler head 26 has multiple drip nozzles, and the simultaneous spraying of water from multiple drip nozzles can create a rain effect. One sensor can be installed in each drip nozzle, or sensors can be installed in some of the drip nozzles.

[0027] Optionally, the sensor can be a flow sensor, a velocity sensor, or other sensors that can be used to measure the amount of water flowing out.

[0028] In some implementations, a pressure sensor is also installed inside the sprinkler head 26 to detect the water spray pressure of the sprinkler head 26. The water spray pressure determines the impact force on the RFID tag when water is sprayed onto it, so pressure monitoring of the sprinkler head 26 is also necessary.

[0029] In some implementations, a sensor is placed inside the water collection chamber 4 to detect the rate of decrease in the total water volume of the water collection chamber 4, and the rate of decrease in the total water volume is used to determine the water output of the spray head 26.

[0030] Furthermore, a viewing door 2 is rotatably connected to the front of the test chamber 1 via a hinge, and multiple support legs 3 are provided on the lower surface of the test chamber 1.

[0031] The temperature control unit 24 includes a heating unit and a cooling unit. The heating unit generates heat by passing electricity through a resistance wire, and the temperature control is relatively precise, which can meet different needs. The cooling unit consists of a compressor, condenser, evaporator and throttling device, etc., and achieves the cooling function through the circulation of refrigerant.

[0032] like Figure 3 As shown, the driving component includes a mounting platform 9, which is connected to the guide seat 6 via multiple brackets 8. Two fixing plates 10 are provided on the upper surface of the mounting platform 9. Sleeves 11 and connecting shafts 12 are rotatably connected to the fixing plates 10 respectively. Sleeves 11 and connecting shafts 12 are sleeved together. Motors 13 are provided at the ends of both sleeves 11 and connecting shafts 12, and the motors 13 are connected to the mounting platform 9. An adjusting seat 14 is provided on the sleeves 11.

[0033] Furthermore, a drive shaft 15 is rotatably connected to the adjusting seat 14. A bevel gear 16 is provided at the bottom end of the drive shaft 15. A bevel gear 17 is meshed with one side of the bevel gear 16. The bevel gear 17 is connected to the connecting shaft 12. The top end of the drive shaft 15 is connected to the placement platform 18. In use, by controlling one of the motors 13 to work, the sleeve 11 drives the adjusting seat 14, the drive shaft 15 and the placement platform 18 to start rotating around the central axis of the sleeve 11. By controlling the other motor 13 to work, the connecting shaft 12 starts to rotate. Under the transmission of the bevel gear 16 and the bevel gear 17, the drive shaft 15 drives the placement platform 18 to start rotating around the central axis of the drive shaft 15, thereby realizing the adjustment of the various installation directions of the RFID tag.

[0034] like Figure 4 As shown, a pump body 19 is provided on the rear side of the test chamber 1. The water inlet end of the pump body 19 is connected to the water collection chamber 4 through the water inlet pipe 20. The water outlet end of the pump body 19 is provided with a water outlet pipe 21. The end of the water outlet pipe 21 extends into the interior of the temperature control box 5 and is connected to the heat conduction bend pipe 22.

[0035] Furthermore, heat-conducting fins 23 are provided on the heat-conducting bend 22.

[0036] By controlling the operation of the pump body 19, the water inlet pipe 20 draws water out of the water collection chamber 4 and injects the water into the water outlet pipe 21, the heat conduction bend 22, the water outlet pan 25 and the spray head 26 for rain testing, thereby forming a cycle and saving water resources.

[0037] The workflow of this embodiment is as follows: The operator opens the visual box door 2 and attaches the RFID tag to the mounting platform 9 and closes the visual box door 2. The driver adjusts the placement platform 18 and the RFID tag to a suitable angle. Then, the temperature control unit 24 adjusts the liquid in the heat-conducting bend 22 to a preset temperature. The pump body 19 is then controlled to operate so that the water inlet pipe 20 draws water out of the water collection chamber 4 and injects the water into the water outlet pipe 21, the heat-conducting bend 22, the water outlet tray 25, and the spray head 26 for rain testing.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rain test chamber for radio frequency tags, comprising a test chamber body (1), characterized in that, The bottom of the test chamber (1) is provided with a water collection chamber (4), the top of the test chamber (1) is provided with a temperature control box (5), the lower part of the inner wall of the test chamber (1) is provided with a flow guide seat (6), the upper part of the flow guide seat (6) is provided with a placement platform (18), the placement platform (18) and the flow guide seat (6) are provided with a driving component for rotating the placement platform (18) and adjusting the angle, the temperature control box (5) is provided with a heat conduction bend (22), the water outlet end of the heat conduction bend (22) is provided with a water outlet plate (25), the lower surface of the water outlet plate (25) is provided with multiple spray heads (26), and the top of the inner wall of the temperature control box (5) is provided with a temperature control unit (24).

2. The rain test chamber for RFID tags according to claim 1, characterized in that, The front side of the test chamber (1) is connected to a visible door (2) by a hinge, and the lower surface of the test chamber (1) is provided with multiple support legs (3).

3. The rain test chamber for RFID tags according to claim 1, characterized in that, The driving component includes a mounting platform (9), which is connected to the guide seat (6) via multiple brackets (8). The upper surface of the mounting platform (9) is provided with two fixing plates (10). The fixing plates (10) are rotatably connected to a sleeve (11) and a connecting shaft (12). The ends of the sleeve (11) and the connecting shaft (12) are each provided with a motor (13). An adjusting seat (14) is provided on the sleeve (11).

4. The rain test chamber for RFID tags according to claim 3, characterized in that, The adjustment seat (14) is rotatably connected to a drive shaft (15). A bevel gear one (16) is provided at the bottom end of the drive shaft (15). A bevel gear two (17) is meshed on one side of the bevel gear one (16). The bevel gear two (17) is connected to the connecting shaft (12). The top end of the drive shaft (15) is connected to the placement platform (18).

5. A rain test chamber for RFID tags according to claim 1, characterized in that, A pump body (19) is provided on the rear side of the test chamber (1). The water inlet end of the pump body (19) is connected to the water collection chamber (4) through the water inlet pipe (20). The water outlet end of the pump body (19) is provided with a water outlet pipe (21). The end of the water outlet pipe (21) extends into the interior of the temperature control box (5) and is connected to the heat-conducting bend pipe (22).

6. The rain test chamber for RFID tags according to claim 1, characterized in that, The heat-conducting bend (22) is provided with heat-conducting fins (23).

7. A rain test chamber for RFID tags according to claim 1, characterized in that, A filter plate (7) is inserted into the front side of the test chamber (1), and the filter plate (7) is located below the flow guide seat (6).

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