Passive motion sensing RFID tag

Abstract

The invention discloses a passive motion sensing RFID tag, which comprises an RFID tag chip, a vibration sensor, an RFID tag antenna and tag backing paper, and is characterized in that the vibration sensor is connected with the RFID tag chip and can monitor the motion state of an object attached with the tag in real time; the RFID tag chip is used for receiving state information of the RFID tag, mapping the state information to the radio frequency port of the RFID tag through the RFID tag chip, and mapping the output signal of the vibration sensor to the radio frequency port of the RFID tag, so that the reader-writer can identify the vibration state of the tag, only the moving tag is identified, the tag in a static state can be effectively filtered, and the reliability of the reader-writer is improved. And the warehouse-in and warehouse-out identification accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency identification, and particularly to a passive motion sensing RFID tag. Background Art

[0002] In modern warehousing and logistics management, RFID tags are widely used for automatic identification and tracking of goods. However, current RFID tags have many deficiencies in practical applications. Especially during the identification process at the inbound and outbound channels, the following problems mainly exist:

[0003] I. Tag interference: Since the inbound and outbound channels are relatively close to the storage area, when the RFID reader reads tags, in addition to being able to identify the goods passing through the channel, it is also prone to misread other nearby stationary tags, resulting in data chaos and thus affecting the overall efficiency of warehousing management;

[0004] II. Tag missed reading: Based on Problem I, to avoid reading other irrelevant tags, the power of the RFID reader at the inbound and outbound channels cannot be set too high, resulting in some tags passing through the inbound and outbound channels not being able to be normally identified, presenting the phenomenon of RFID missed reading;

[0005] III. Limitations of active tags: Although using active RFID tags can reduce interference to a certain extent, their high cost and the problem of being limited by battery life pose potential risks during long-term use. Especially in a large-scale warehousing environment, the cost and complexity of maintaining and replacing batteries are particularly prominent.

[0006] Therefore, there is an urgent need for a new type of passive motion sensing RFID tag to effectively solve the above problems and achieve more efficient and accurate goods management. Summary of the Invention

[0007] To overcome the defects in the above-mentioned prior art, the present invention provides a passive motion sensing RFID tag. By connecting the RFID tag chip with a vibration sensor, it can detect the motion state of the object attached with the tag in real time and map this state information to the RF port of the RFID tag, ensuring that only the moving tags are identified, effectively filtering the stationary tags, and improving the accuracy of inbound and outbound identification.

[0008] Technical Solution

[0009] A passive motion sensing RFID tag includes an RFID tag chip, a vibration sensor, an RFID tag antenna, and a tag backing paper. The vibration sensor is connected to the RFID tag chip. The vibration sensor can monitor the motion state of the object attached with the tag in real time and map this state information to the RF port of the RFID tag through the RFID tag chip.

[0010] Further, the RFID tag chip includes a status mapping module, which can convert the motion status information from the vibration sensor into a signal that can be correctly recognized by the RFID reader and map it to a certain byte in the EPC area of the RFID tag, but not limited to the EPC area.

[0011] Further, the RFID tag chip and the RFID tag antenna form an RFID tag body. The RFID tag antenna is used to send and receive RFID signals to ensure that the tag can communicate effectively with the reader and improve the stability and accuracy of data transmission.

[0012] Further, the vibration sensor can monitor the motion status of the object to which the tag is attached in real time and convert the motion status information into an electrical signal to be provided to the RFID tag body.

[0013] Further, the vibration sensor is connected to the RFID tag chip through a connecting wire for transmitting electrical signals.

[0014] Further, the label backing paper is used to carry the RFID tag chip, the vibration sensor and the RFID tag antenna. There is also an adhesive layer attached to the label backing paper, which can adhere to an object.

[0015] Further, the vibration sensor adopts micromachining process technology.

[0016] Advantageous Effects

[0017] Compared with the prior art, the present invention has the following advantageous effects:

[0018] By mapping the output signal of the vibration sensor to the radio frequency port of the RFID tag, the reader can identify the vibration status of the tag, ensuring that only the moving tags are recognized, effectively filtering the stationary tags, and improving the accuracy of inbound and outbound identification. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a passive motion-sensing RFID tag of the present invention.

[0020] Reference Numerals in the Drawings

[0021] Label backing paper 1, RFID tag chip 2, RFID tag chip 3, vibration sensor 4. Detailed Embodiments

[0022] To better illustrate and explain the content of the present invention, the following is an expansion based on the drawings and embodiments:

[0023] There is Figure 1As shown in the figure, the present invention discloses a passive motion sensing RFID tag, which includes an RFID tag chip 3, a vibration sensor 4, an RFID tag antenna 2 and a tag backing paper 1. The vibration sensor 4 is connected to the RFID tag chip 3. The vibration sensor 4 can monitor the motion state of the object with the tag in real time, and map the state information to the RF port of the RFID tag through the RFID tag chip 3.

[0024] Further, the RFID tag chip 3 includes a state mapping module. The state mapping module can convert the motion state information from the vibration sensor 4 into a signal that can be correctly recognized by an RFID reader, and map it to a certain byte in the EPC area of the RFID tag, but not limited to the EPC area.

[0025] Further, the RFID tag chip 3 and the RFID tag antenna 2 form an RFID tag body. The RFID tag antenna 2 is used to send and receive RFID signals, ensuring that the tag can communicate effectively with the reader, and improving the stability and accuracy of data transmission.

[0026] Further, the vibration sensor 4 can monitor the motion state of the object attached with the tag in real time, and convert the motion state information into an electrical signal and provide it to the RFID tag body.

[0027] Further, the vibration sensor 4 and the RFID tag chip 3 are connected by a connecting wire for transmitting electrical signals.

[0028] Further, the tag backing paper 1 is used to carry the RFID tag chip 3, the vibration sensor 4 and the RFID tag antenna 2. There is also an adhesive layer attached to the tag backing paper 1, which can adhere to an object.

[0029] Further, the vibration sensor 4 adopts micro-machining process technology.

[0030] Specifically, in the access and exit channels of radio frequency identification, the reader can accurately distinguish the RFID tags that are entering and exiting, and filter out the tags in a stationary state. This design effectively removes abnormal tags, thereby improving the accuracy of material access and exit, reducing the possibility of data chaos, and thus optimizing the warehousing management process. On the other hand, since the reader can filter other stationary tags, the reader can operate at full power to avoid the problem of some tags being missed;

[0031] By combining advanced motion detection technology, many deficiencies of traditional RFID tags in warehousing and logistics applications have been successfully solved, which has broad application prospects and market value. With the continuous growth of the logistics industry's demand for intelligence and automation, this technology is expected to play an important role in future warehouse management, bringing higher efficiency and lower operating costs to enterprises;

[0032] The tag can work stably under different temperature and humidity conditions and is suitable for a variety of warehousing environments. The design of the tag complies with international standards and can be used in compatibility with RFID readers of multiple brands and models.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the technical solutions of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A passive motion sensing RFID tag, characterized in that: It includes an RFID tag chip (3), a vibration sensor (4), an RFID tag antenna (2) and a label backing paper (1). The vibration sensor (4) is connected to the RFID tag chip (3). The vibration sensor (4) can monitor the motion state of the object with the tag in real time, and map the state information to the RF port of the RFID tag through the RFID tag chip (3).

2. The passive motion sensing RFID tag according to claim 1, characterized in that: The RFID tag chip (3) contains a state mapping module. The state mapping module can convert the motion state information from the vibration sensor (4) into a signal that can be correctly recognized by an RFID reader, and map it to a certain byte in the EPC area of the RFID tag, but not limited to the EPC area.

3. A passive motion sensing RFID tag according to claim 1, characterized in that: The RFID tag chip (3) and the RFID tag antenna (2) form an RFID tag body. The RFID tag antenna (2) is used to send and receive RFID signals, ensuring that the tag can communicate effectively with the reader, and improving the stability and accuracy of data transmission.

4. The passive motion sensing RFID tag according to claim 3, characterized in that: The vibration sensor (4) can monitor the motion state of the object attached with the tag in real time, and convert the motion state information into an electrical signal and provide it to the RFID tag body.

5. A passive motion sensing RFID tag according to claim 1, characterized in that: The vibration sensor (4) and the RFID tag chip (3) are connected by a connecting wire for transmitting electrical signals.

6. A passive motion sensing RFID tag according to any one of claims 1-5, characterized in that: The label backing paper (1) is used to carry the RFID tag chip (3), the vibration sensor (4) and the RFID tag antenna (2). There is also an adhesive layer attached to the label backing paper (1), which can adhere to an object.

7. A passive motion sensing RFID tag according to claim 1, characterized in that: The vibration sensor (4) adopts micromachining technology.

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