RFID antenna mounting device and RFID sensing system

Abstract

The present application relates to an RFID antenna mounting device and an RFID sensing system. The RFID antenna mounting device comprises: a slide rail, an antenna fixing slider, a driving mechanism, and a PLC. The antenna fixing slider is movably arranged on the slide rail. The driving mechanism is used for driving the antenna fixing slider to move on the slide rail. The PLC is used for controlling the stroke and speed of the antenna fixing slider moving on the slide rail. By using the RFID antenna mounting device, an RFID processor antenna can move along with an antenna fixing slider fixed thereto, so as to adjust the position of the RFID processor antenna, thereby facilitating improvement of the stability of the RFID processor antenna receiving data and facilitating the supply of power to a sensor. Additionally, the number of RFID processor antennas can be reduced while ensuring the signal transceiving stability, thereby saving costs.

Description

RFID antenna assembly device and RFID sensing system TECHNICAL FIELD

[0001] The present application relates to the field of wireless sensing technology, and in particular to an RFID antenna assembly device and an RFID sensing system. BACKGROUND

[0002] In the context of sensing the related data of a device, for example, in the context of measuring the temperature of a bearing on a cold rolling production line, the related temperature data can be wirelessly collected and transmitted by a radio frequency identification (RFID) sensing system. In a conventional RFID sensing system, the RFID processor antenna is arranged at a fixed position, and the RFID processor antenna cannot be moved after installation. Since the multiple temperature test points are relatively dispersed, it is difficult to use one processor antenna to provide energy for all temperature sensors and collect temperature data, and therefore the position of the RFID processor antenna is very important for obtaining temperature data.

[0003] Due to the blocking of the peripheral components of the detection device, the wireless signals transmitted and received by the RFID processor antenna are easily subjected to multiple reflections. In addition, the detection device, such as a cold rolling production line, generates a large amount of steam during operation, and the steam can absorb electromagnetic energy, so the wireless signals transmitted and received by the RFID processor antenna are easily disturbed by the steam. On the transmission path of the wireless signals, multiple electromagnetic wave peaks and troughs exist alternately, and when the RFID processor antenna is fixed at a certain position, if the RFID processor antenna is located at a trough position, it is difficult to read the data sent by the temperature sensor.

[0004] Further, on the transmission path of the wireless signals, the positions of the electromagnetic wave peaks and troughs are not always fixed, but are easily affected by various factors and change in real time. For example, the steam in the environment where the detection device, such as a cold rolling production line, is located is dynamic, which causes the originally suitable position of the RFID processor antenna to become an unsuitable position due to the influence of the dynamic steam. In addition, in the detection device, such as a cold rolling production line, when rolling steel plates of different thicknesses, the bearing seat will jump in the axial direction, and thus the temperature sensor fixed on the bearing seat will change position with the jumping of the bearing seat, which also affects the positions of the wireless signal peaks and troughs.

[0005] As described above, the conventional RFID sensing system is difficult to stably receive data. Therefore, there is an urgent need for an RFID sensing system to solve the above problems.

[0006] SUMMARY

[0007] To overcome the problems in the related art, the present application provides an RFID antenna assembly device and an RFID sensing system.

[0008] According to the embodiment of the present application, the present application provides an RFID antenna assembling device, characterized in that comprising: a slide rail, an antenna fixing sliding block, a driving mechanism and a PLC controller. The antenna fixing sliding block is movably arranged on the slide rail; the driving mechanism is used for driving the antenna fixing sliding block to move on the slide rail; and the PLC controller is used for controlling the stroke and speed of the antenna fixing sliding block moving on the slide rail.

[0009] In some embodiments, the slide rail is movable in a direction perpendicular to the extending direction.

[0010] In some embodiments, the slide rail comprises a longitudinal slide rail and a horizontal slide rail; one of the longitudinal slide rail and the horizontal slide rail is movably arranged on the other.

[0011] In some embodiments, one of the longitudinal slide rail and the horizontal slide rail is fixed, and the other is movable along the extending direction of the fixed one; the antenna fixing sliding block is movably arranged on the movable one.

[0012] In some embodiments, a plurality of antenna fixing sliding blocks are arranged, each of which is arranged on the movable one of the longitudinal slide rail and the horizontal slide rail.

[0013] In some embodiments, the movable one of the longitudinal slide rail and the horizontal slide rail is provided with a plurality of movable ones; a plurality of antenna fixing sliding blocks are arranged on the plurality of movable ones.

[0014] In some embodiments, the PLC controller can control each of the plurality of antenna fixing sliding blocks individually.

[0015] According to the embodiment of the present application, the present application also provides an RFID sensing system, comprising: a sensor, an RFID antenna assembly, an RFID processor and a data management system. The RFID antenna assembly is wirelessly connected in communication with the sensor; the RFID antenna assembly comprises: an RFID processor antenna and an RFID antenna assembling device as described above, wherein the RFID processor antenna is fixedly arranged on the antenna fixing sliding block; the RFID processor is electrically connected with the RFID processor antenna; and the data management system is connected in communication with the RFID processor.

[0016] In some embodiments, the sensor is a temperature sensor.

[0017] In some embodiments, the RFID processor antenna provides electric energy for the sensor.

[0018] The technical scheme provided by the embodiment of the present application can have the following beneficial effects: through the RFID antenna assembling device, the RFID processor antenna can move with the antenna fixing slider fixed thereto, so as to adjust the position of the RFID processor antenna, and the RFID processor antenna can be adjusted to a suitable signal transceiving position in real time, which is beneficial to improving the stability of the RFID processor antenna in receiving data and is beneficial to the RFID processor antenna in providing power for the sensor. Moreover, the stability of signal transceiving can be ensured, and one RFID processor antenna can stably transceive signals of multiple sensors without the need of setting more RFID processor antennas to ensure the stability of signal transceiving. In this way, the number of RFID processor antennas can be reduced, and cost can be saved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0020] FIG. 1 shows a schematic diagram of an RFID sensing system according to an embodiment of the present application;

[0021] FIG. 2 shows a structural schematic diagram of an RFID antenna assembling device according to an embodiment of the present application; and

[0022] FIG. 3 shows a structural schematic diagram of an RFID antenna assembling device according to another embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be clearly and completely described below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0024] According to an embodiment of the present application, an RFID sensing system is provided. The RFID sensing system is used to monitor various parameter data of a measured device in a running process, so as to diagnose the measured device. For example, the RFID sensing system can monitor, but is not limited to, temperature data of a bearing in a running process.

[0025] For example, in the scenario of measuring bearing temperature on a cold rolling production line, the relevant temperature data can be collected and transmitted wirelessly by the RFID sensing system. On the transmission path of the wireless signal, multiple electromagnetic wave peaks and troughs exist alternately. When the RFID processor antenna is fixed at a certain position, if the RFID processor antenna is located at a trough position, it is difficult to read the data sent by the temperature sensor. Therefore, the staff hopes that the RFID processor antenna can be kept at a peak position as much as possible to improve the stability of the transceiving signal.

[0026] However, on the transmission path of the wireless signal, the positions of the electromagnetic wave peaks and troughs are not always fixed. For example, the steam in the environment where the detected equipment such as the cold rolling production line is located is dynamic, and when rolling steel plates of different thicknesses, the bearing seat will jump in the axial direction, causing the temperature sensor fixed on the bearing seat to change position. These factors can cause the positions of the peaks and troughs on the signal transmission path to change at any time, so it is necessary to adjust the position of the RFID processor antenna in real time to keep it at a peak position as much as possible to ensure the stability of the transceiving signal.

[0027] FIG. 1 shows a schematic diagram of an RFID sensing system according to an embodiment of the present application. As shown in FIG. 1, the RFID sensing system includes sensors 10, an RFID antenna assembly 20, an RFID processor 30, and a data management system 40.

[0028] The sensors 10 are provided in multiple numbers and are arranged at multiple points of the detected equipment. For example, in the scenario of measuring bearing temperature on a cold rolling production line, the sensors 10 can be temperature sensors, and multiple temperature sensors are fixedly arranged on the bearing seat to measure the temperature of the bearings on the cold rolling production line. Of course, the sensors 10 are not limited to temperature sensors, and in other applications, they can also be pressure sensors, distance sensors, etc., which are not limited herein.

[0029] The RFID antenna assembly 20 includes an RFID processor antenna 20a and an RFID antenna assembly device 20b, and the RFID processor antenna 20a is arranged on the RFID antenna assembly device 20b. For example, in the scenario of measuring bearing temperature on a cold rolling production line, the RFID antenna assembly 20 is located near the bearing seat to facilitate transceiving signals with the sensors 10. Each RFID processor antenna 20a can transceive signals with multiple sensors 10. The multiple sensors 10 can send the data (such as temperature data) collected by them to the RFID processor antenna 20a. Since the sensors 10 require less power to work, the RFID processor antenna 20a can also send electromagnetic waves such as 915 MHz electromagnetic waves to the sensors 10 to provide power to the sensors 10 in a wireless transmission manner.

[0030] In addition, the RFID processor 30 is electrically connected with the RFID processor antenna 20a to process the data received by the RFID processor antenna 20a, and the data processed by the RFID processor 30 is transmitted to the data management system 40 to diagnose the detected equipment.

[0031] The present application provides an RFID antenna assembling device 20b, which can control the real-time adjustment of the position of the RFID processor antenna 20a disposed thereon according to the strength of the transceiving signal, so that the RFID processor antenna 20a is located at the position of the signal peak as much as possible, thereby improving the stability of the signal transceiving of the RFID processor antenna 20a.

[0032] FIG. 2 shows a structural schematic diagram of the RFID antenna assembling device according to an embodiment of the present application. As shown in FIG. 2, in some embodiments, the RFID antenna assembling device provided by the present application comprises a slide rail 21, at least one antenna fixing sliding block 22, a driving mechanism 23, and a PLC controller 24. The antenna fixing sliding block 22 is movably disposed on the slide rail 21; the driving mechanism 23 is used to drive the antenna fixing sliding block 22 to move on the slide rail 21; and the PLC controller 24 is used to control the stroke and speed of the movement of the antenna fixing sliding block 22 on the slide rail 21.

[0033] Specifically, as shown in FIG. 2, the extension direction of the slide rail 21 can be the longitudinal direction Y, the antenna fixing sliding block 22 can move along the longitudinal direction Y, the driving mechanism 23 can be a motor to drive the movement of the antenna fixing sliding block 22, and the stroke and speed of the movement of the antenna fixing sliding block 22 are controlled by the PLC controller 24. When the antenna fixing sliding block 22 moves to the position meeting the requirement of the transceiving signal strength, the movement of the antenna fixing sliding block 22 is stopped.

[0034] Alternatively, the extension direction of the slide rail 21 can also be the horizontal direction X, and the antenna fixing sliding block 22 can move along the horizontal direction X.

[0035] Since the environment of the detected equipment can change from time to time, for example, the RFID sensing system is easily disturbed by dynamic steam, it is necessary to adjust the position of the RFID processor antenna 20a in real time. It can be designed that when the transceiving signal strength between the RFID processor antenna 20a and the sensor 10 is lower than a preset threshold, the PLC controller 24 controls the movement of the antenna fixing sliding block 22 through the driving mechanism 23, so that the RFID processor antenna 20a reaches a new position meeting the requirement of the transceiving signal strength.

[0036] In some embodiments, as shown in FIG. 2, the antenna fixing sliders 22 can be provided in plurality, accordingly, the driving mechanism 23 can also include a plurality of motors to drive the plurality of antenna fixing sliders 22 respectively, the PLC controller 24 can control each of the plurality of antenna fixing sliders 22 individually through the plurality of motors, so that the plurality of antenna fixing sliders 22 can reach the positions that meet the strength requirements of the signals received and transmitted by the sensors 10 corresponding to the antenna fixing sliders 22 respectively.

[0037] In some alternative embodiments, the slide rail 21 is movable in the direction perpendicular to the extending direction.

[0038] As shown in FIG. 2, the extending direction of the slide rail 21 can be the longitudinal direction Y, and the slide rail 21 as a whole can further be movable in the horizontal direction X perpendicular to the longitudinal direction Y. So that the antenna fixing sliders 22 can not only adjust the positions in the longitudinal direction Y along the extending direction of the slide rail 21, but also adjust the positions in the horizontal direction X along with the slide rail 21, so that the antenna fixing sliders 22 can move to the positions that meet the strength requirements of the signals received and transmitted.

[0039] Similarly, the extending direction of the slide rail 21 can also be the horizontal direction X, and the slide rail 21 as a whole can further be movable in the longitudinal direction Y perpendicular to the horizontal direction X.

[0040] Any structure that can make the slide rail 21 movable in the direction perpendicular to the extending direction can be adopted. In some alternative embodiments, as shown in FIG. 2, the slide rail 21 includes a longitudinal slide rail 211 and a horizontal slide rail 212; one of the longitudinal slide rail 211 and the horizontal slide rail 212 is movably arranged on the other.

[0041] Further, one of the longitudinal slide rail 211 and the horizontal slide rail 212 is fixed, and the other is movable along the extending direction of the fixed one; the antenna fixing sliders 22 are movably arranged on the movable one. Wherein, the movable slide rail can be driven by the driving mechanism 23 to move on the fixed slide rail; the PLC controller 24 can control the stroke and speed of the movable slide rail moving through the driving mechanism 23, so that the antenna fixing sliders 22 on the movable slide rail can reach the positions that meet the strength requirements of the signals received and transmitted in the extending direction of the fixed slide rail, and then the antenna fixing sliders 22 can reach the positions that meet the strength requirements of the signals received and transmitted in the extending direction of the movable slide rail, so as to reach the positions that meet the strength requirements of the signals received and transmitted in the two-dimensional plane marked by the horizontal direction X and the longitudinal direction Y.

[0042] As shown in FIG. 2, alternatively, the horizontal slide rail 212 is fixed, the longitudinal slide rail 211 is movable along the extension direction of the horizontal slide rail 212, and the antenna fixing slide block 22 is movably arranged on the longitudinal slide rail 211, so that the antenna fixing slide block 22 can adjust the position in the horizontal direction X and the longitudinal direction Y.

[0043] In other embodiments, the longitudinal slide rail 211 can also be designed as a movable slide rail, the horizontal slide rail 212 is movable along the extension direction of the longitudinal slide rail 211, and the antenna fixing slide block 22 is movably arranged on the horizontal slide rail 212.

[0044] Further, in some optional embodiments, the antenna fixing slide block 22 is provided in plurality, and each is arranged on the movable slide rail in the longitudinal slide rail 211 and the horizontal slide rail 212, so that each of the antenna fixing slide blocks 22 can adjust the position in the horizontal direction X and the longitudinal direction Y.

[0045] In some optional embodiments, FIG. 3 shows a structural schematic diagram of an RFID antenna assembly device according to another embodiment of the present application. As shown in FIG. 3, the movable slide rails in the longitudinal slide rail 211 and the horizontal slide rail 212 are provided in plurality, and a plurality of the antenna fixing slide blocks 22 are arranged on the movable slide rails. In this way, the positions of the plurality of antenna fixing slide blocks 22 distributed in the two-dimensional plane indicated by the horizontal direction X and the longitudinal direction Y can have more choices, so that the distribution of the antenna fixing slide blocks 22 is more reasonable, and each can be adjusted to a position corresponding to the respective different sensor and meeting the requirements of the signal receiving and transmitting strength.

[0046] In other embodiments, the longitudinal slide rail 211 and the horizontal slide rail 212 can also be designed as movable slide rails, and each of the longitudinal slide rail 211 and the horizontal slide rail 212 can be one or more, and a plurality of the antenna fixing slide blocks 22 are arranged on the longitudinal slide rail 211 and / or the horizontal slide rail 212.

[0047] The present application further provides an RFID sensing system. As shown in FIG. 1, the RFID sensing system comprises a sensor 10, an RFID antenna assembly 20, an RFID processor 30, and a data management system 40. The RFID antenna assembly 20 is wirelessly connected in communication with the sensor 10. The RFID antenna assembly 20 comprises an RFID processor antenna 20a and an RFID antenna assembly device 20b as described in any one of the above embodiments, wherein the RFID processor antenna 20a is fixedly arranged on the antenna fixing slide block 22. The RFID processor 30 is electrically connected with the RFID processor antenna 20a. The data management system 40 is connected in communication with the RFID processor 30.

[0048] In some optional embodiments, the sensor 10 is a temperature sensor. Of course, the sensor 10 can also be a pressure sensor, a distance sensor, etc., which can be set as needed, and is not limited herein.

[0049] In some optional embodiments, the RFID processor antenna 20a provides power for the sensor 10.

[0050] Through the RFID antenna assembly device 20b and the RFID sensing system of the present application, the RFID processor antenna 20a can move with the antenna fixing slider 22 fixed thereto, so as to adjust the position of the RFID processor antenna 20a, so that the RFID processor antenna 20a is adjusted to a suitable signal transceiving position in real time, which is conducive to improving the stability of the RFID processor antenna 20a in receiving data, and is conducive to the RFID processor antenna 20a providing power for the sensor 10. Moreover, the stability of signal transceiving can be ensured, and one RFID processor antenna 20a can stably transceive signals with multiple sensors 10, without the need to set more RFID processor antennas 20a to ensure the stability of signal transceiving. In this way, the number of RFID processor antennas 20a can be reduced, and costs can be saved.

[0051] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the present application cover any and all variations of the application that come within the scope of the claims and their equivalents. It is intended that the specification and examples be considered exemplary only, with the true scope and spirit of the application indicated by the following claims.

[0052] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the claims that follow.

[0053] Legend 10. Sensor; 20. RFID antenna assembly; 20a. RFID processor antenna; 20b. RFID antenna assembly device; 21. Slide rail; 211. Longitudinal slide rail; 212. Horizontal slide rail; 22. Antenna fixing slider; 23. Driving mechanism; 24. PLC controller; 30. RFID processor; 40. Data management system; X. Horizontal direction; Y. Longitudinal direction.

Claims

1. An RFID antenna assembly apparatus, characterized by, Comprising: a slide rail (21); an antenna fixing slide block (22) movably arranged on the slide rail (21); a driving mechanism (23) for driving the antenna fixing slide block (22) to move on the slide rail (21); and a PLC controller (24) for controlling the stroke and speed of the antenna fixing slide block (22) moving on the slide rail (21). The slide rail (21) is movable in a direction perpendicular to the extending direction.

2. The RFID antenna assembly apparatus of claim 1, wherein, The slide rail (21) comprises a longitudinal slide rail (211) and a horizontal slide rail (212); one of the longitudinal slide rail (211) and the horizontal slide rail (212) is movably arranged on the other.

3. The RFID antenna assembly apparatus of claim 2, wherein, One of the longitudinal slide rail (211) and the horizontal slide rail (212) is fixed, and the other is movable along the extending direction of the fixed one; the antenna fixing slide block (22) is movably arranged on the movable one.

4. The RFID antenna assembly apparatus of claim 3, wherein, The antenna fixing slide block (22) is provided in multiple, each of which is arranged on the movable one of the longitudinal slide rail (211) and the horizontal slide rail (212).

5. The RFID antenna assembly apparatus of claim 4, wherein, The movable one of the longitudinal slide rail (211) and the horizontal slide rail (212) is provided in multiple; multiple antenna fixing slide blocks (22) are arranged on multiple movable ones.

6. The RFID antenna assembly apparatus of claim 5, wherein, The PLC controller (24) can control each of multiple antenna fixing slide blocks (22) individually.

7. The RFID antenna assembly apparatus of claim 5, wherein, Comprising:

8. An RFID sensing system characterized in that, a sensor (10); an RFID antenna assembly (20) wirelessly connected in communication with the sensor (10); The The RFID antenna assembly (20) comprises: an RFID processor antenna (20a) and an RFID antenna assembly device (20b) as claimed in any one of claims 1 to 7, wherein the RFID processor antenna (20a) is fixedly arranged on the antenna fixing slide block (22); an RFID processor (30) electrically connected with the RFID processor antenna (20a); and a data management system (40) in communication with the RFID processor (30). The sensor (10) is a temperature sensor.

9. The RFID sensing system of claim 8, wherein, The RFID processor antenna (20a) provides electrical energy for the sensor (10).

10. The RFID sensing system of claim 8, wherein, ​

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