CN111612116B - Ultrahigh frequency RFID electronic tag, read-write device, cloud end and cloud management system - Google Patents

Abstract

The application provides an ultrahigh frequency RFID electronic tag, a read-write device, a cloud end and a cloud management system. The method comprises the steps that tag information containing management information corresponding to fixed assets is formed by means of ultra-high frequency RFID electronic tags attached to different fixed assets according to preset encoding rules; the ultrahigh frequency RFID read-write device is used for transmitting an ultrahigh frequency signal, receiving the ultrahigh frequency signal reflected by the ultrahigh frequency RFID electronic tag, demodulating the ultrahigh frequency signal to obtain tag information corresponding to the ultrahigh frequency RFID electronic tag and containing management information corresponding to the fixed asset, and sending the tag information to a cloud end for fixed asset management, wherein the cloud end is used for obtaining the tag information, and decoding the tag information through the preset coding rule to obtain the management information contained in the tag information for management. The application can remotely grasp the state of the fixed asset in real time, improves asset management and inventory efficiency, reduces wiring difficulty and cost of the ultrahigh frequency RFID reader-writer, and enhances environmental adaptability.

Description

Ultrahigh frequency RFID electronic tag, read-write device, cloud end and cloud management system

Technical Field

The application relates to the technical field of radio frequency identification read-write, in particular to an ultrahigh frequency RFID electronic tag, a read-write device, a cloud end and a cloud management system.

Background

With the development of technology, more and more devices are required to be managed by scientific research institutions, enterprises, and the like, and the burden on the management of these devices or other fixed assets is also increasing. If a manufacturing enterprise usually has more production devices or office devices, it is necessary to check whether these devices are moving or lack them, and many devices are time-consuming and laborious to count one by one. If enterprises have branch companies in several provinces, the unified management of equipment is difficult, and the information lag is obvious. And if a plurality of devices in the building are arranged on different floors, the devices need to run through the different floors one by one after counting.

At present, when checking goods or fixed assets, a two-dimensional code recognition technology is generally adopted, and each goods or fixed asset is scanned and checked through a handheld code scanning gun, but the efficiency of the mode is slower, and the tag recognition code is easy to obtain maliciously, poor in safety and easy to pollute and damage. In addition, the tag data is acquired through an ultrahigh frequency RFID reader-writer, but the tag data and the like are always returned in the form of a USB serial port line or a network cable, so that the tag data cannot be re-wired or the wiring is complex and high in cost due to environmental limitation, and the data is stored in a local computer, so that remote management is difficult, and the reliability of the data is low.

Therefore, a need exists for an efficient, automated solution for inventory of fixed assets and for remote transmission and management of data.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present application is to provide an ultrahigh frequency RFID electronic tag, a read-write device, a cloud end, and a cloud management system, which are used for solving the problems of low efficiency, difficulty in remote management of data, etc. existing in the process of checking fixed assets by using ultrahigh equipment radio frequency in the prior art.

To achieve the above and other related objects, the present application provides an ultra-high frequency RFID tag attached to one or more fixed assets, the ultra-high frequency RFID tag comprising: the storage is used for storing management information of the attached fixed asset and a tag identification code which is formed by encoding according to a preset encoding rule and contains the management information; and the antenna unit is used for transmitting the ultrahigh frequency signal with the ultrahigh frequency RFID reader-writer so as to perform wireless communication.

In an embodiment of the present application, the working frequency of the ultrahigh frequency RFID electronic tag is ultrahigh frequency, and the tag identification code is a unique electronic code or serial number corresponding to each fixed asset.

To achieve the above and other related objects, the present application provides an ultra-high frequency RFID read-write device comprising: the system comprises an ultrahigh frequency RFID transceiver module, a microcontroller module and a communication module; the ultrahigh frequency RFID transceiver module is used for transmitting ultrahigh frequency signals according to the control instruction of the microcontroller module and receiving the ultrahigh frequency signals reflected by the ultrahigh frequency RFID electronic tags for identifying different fixed assets; the microcontroller module is in communication connection with the ultrahigh frequency RFID receiving and transmitting module, and is used for generating a control instruction and sending the control instruction to the ultrahigh frequency RFID receiving and transmitting module so as to enable the control instruction to transmit radio frequency signals, demodulating the control instruction after receiving the ultrahigh frequency signals reflected by the ultrahigh frequency RFID electronic tag so as to obtain a tag identification code which is formed by encoding according to a preset encoding rule and contains management information corresponding to a fixed asset, and sending the tag identification code to the cloud; the mobile communication module is in communication connection with the microcontroller module and is used for sending the tag identification code to the cloud end so that the cloud end can decode the management information contained in the mobile communication module according to a preset coding rule.

In an embodiment of the present application, the microcontroller module automatically generates and transmits the control command to the ultrahigh frequency RFID transceiver module according to a preset fixed period; or, manually enabling the microcontroller module to generate and send the control instruction to the ultrahigh frequency RFID transceiver module.

In an embodiment of the present application, the ultra-high frequency RFID transceiver module includes: the device comprises a frequency synthesis circuit, a radio frequency power amplification circuit, an antenna switching circuit, a low noise amplification circuit, a down-mixing circuit, an intermediate frequency amplification circuit and an intermediate frequency filtering shaping circuit.

In an embodiment of the present application, the mobile communication module includes: a four-frequency GSM communication unit or a four-frequency GPRS communication unit, an antenna unit, a DCDC power supply circuit and a SIM card seat circuit.

In an embodiment of the application, the ultrahigh frequency RFID read-write device further includes: the power management module is used for supplying power to each module; and the LED indicator lamp module is in communication connection with the microcontroller module and is used for indicating the running states of the ultrahigh frequency RFID transceiver module, the microcontroller module and the communication module.

To achieve the above and other related objects, the present application provides a cloud end for fixed asset management, the cloud end comprising: the communicator is used for being in communication connection with the ultrahigh frequency RFID read-write device so as to acquire a tag identification code which is formed by encoding according to a preset encoding rule and contains the management information; the processor is used for encoding the formed tag identification code containing the management information corresponding to the fixed asset according to a preset encoding rule so as to write or modify the management information corresponding to the tag identification code; forming visual data in a report form or a graphic form according to the management information; and the memory is used for storing the management information.

To achieve the above and other related objects, the present application provides a fixed asset cloud management system based on ultra-high frequency RFID, the system comprising: one or more ultra-high frequency RFID electronic tags as described above, each attached to a different fixed asset; each ultrahigh frequency RFID electronic tag is encoded according to a preset encoding rule to form tag information containing management information corresponding to the fixed asset; the ultrahigh frequency RFID read-write device is used for transmitting an ultrahigh frequency signal, receiving the ultrahigh frequency signal reflected by the ultrahigh frequency RFID electronic tag, demodulating the ultrahigh frequency signal to obtain tag information corresponding to the ultrahigh frequency RFID electronic tag and containing management information corresponding to the fixed asset, and sending the tag information to the cloud; the cloud end for fixed asset management is used for acquiring the tag information, decoding the tag information through the preset encoding rule to acquire management information, contained in the tag information, corresponding to the fixed asset, for management.

In an embodiment of the present application, the management information includes: the fixed asset name, fixed asset model, fixed asset geographic location, fixed asset job number, factory information, purchasers, fixed asset price, purchase time, age, maintenance record, in-use information, and in-use case any one or more combinations.

As described above, the ultrahigh frequency RFID electronic tag, the read-write device, the cloud end and the cloud management system provided by the application.

The following beneficial effects are achieved:

the state of the fixed asset can be mastered remotely in real time, the asset management and inventory efficiency is improved, the wiring difficulty and cost of the ultrahigh frequency RFID reader-writer are reduced, and the environmental adaptability is enhanced.

Drawings

Fig. 1 is a schematic view of a fixed asset cloud management system based on ultra-high frequency RFID according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an ultrahigh frequency RFID tag according to an embodiment of the application.

Fig. 3 is a schematic structural diagram of an ultrahigh frequency RFID read-write device according to an embodiment of the application.

Fig. 4 is a schematic diagram of a cloud end for fixed asset management according to an embodiment of the application.

Fig. 5 is a schematic structural diagram of a fixed asset cloud management system based on ultra-high frequency RFID according to an embodiment of the present application.

Detailed Description

Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

The ultrahigh frequency RFID (Radio Frequency Identification) system has the advantages of long reading distance, high communication speed, low cost, small size, strong penetrability, diversified shape, strong anti-pollution capability, repeated use, batch processing, high reliability and service life, large memory capacity of data, encryption and the like, and is a non-contact automatic identification technology for realizing identification targets and acquiring target data by utilizing the space coupling of radio frequency signals (coupling refers to the phenomenon that two or more circuit elements or electric networks and the like have close matching and mutual influence between input and output and transmitting energy from one side to the other side through interaction). In addition, the ultra-high frequency RFID (the working frequency band of 860-960MHz is regulated by the international standard ISO 18000-6C) has shorter working wavelength compared with the working wavelength of 13.56MHz and 125KHz of low frequency, and the antenna has small and flexible size and flexible application, so the ultra-high frequency passive tag and reader become the key direction of the development of the field of the Internet of things in recent years, and are also the main technology based on the application.

Referring to fig. 1, a schematic view of a fixed asset cloud management system based on ultra-high frequency RFID according to an embodiment of the present application is shown. As shown, in this scenario, it includes: the system comprises an ultrahigh frequency RFID electronic tag 101, an ultrahigh frequency RFID read-write device 102 and a cloud end 103 for fixed asset management.

In fig. 1, the fixed assets are exemplified by: a calculator, a server, a central controller and other common office equipment.

Each fixed asset is attached with an ultrahigh frequency RFID electronic tag 101, and the ultrahigh frequency RFID electronic tag is attached to each fixed asset in a manner of being pasted or hung and the like. The uhf RFID tag 101 stores management information of the attached fixed asset and a tag identification code including the management information, which is encoded according to a preset encoding rule.

The ultrahigh frequency RFID read-write device 102 performs wireless communication with the ultrahigh frequency RFID electronic tags 101 on the fixed assets by transmitting ultrahigh frequency signals and receiving the ultrahigh frequency signals reflected back by the ultrahigh frequency RFID electronic tags 101 for identifying different fixed assets. And demodulating to obtain a tag identification code which is formed by encoding according to a preset encoding rule and contains the management information corresponding to the fixed asset.

The cloud 103 for managing the fixed asset encodes a formed tag identification code containing the management information corresponding to the fixed asset according to a preset encoding rule so as to write or modify the management information corresponding to the tag identification code; and forming visual data in the form of a report or a graph according to the management information.

In the above scenario, the ultrahigh frequency RFID read-write device 102 may be configured to automatically generate and send the control instruction according to a fixed period to transmit an ultrahigh frequency signal to the ultrahigh frequency RFID electronic tag 101, and automatically demodulate the reflected ultrahigh frequency signal to obtain a tag identification code, upload the tag identification code to the cloud 103 for fixed asset management, and then decode the tag identification code by the cloud 103 for fixed asset management to obtain management information contained in the tag identification code, thereby implementing unmanned asset information management.

For example, the fixed asset is automatically checked at 7 pm every day, and at the time of 7 pm every day, the ultrahigh frequency RFID read-write device 102 automatically transmits an ultrahigh frequency signal to obtain a tag identification code corresponding to the ultrahigh frequency RFID electronic tag 101; or the cloud 103 managed by the fixed asset sends a control instruction to the ultrahigh frequency RFID read-write device 102 at the time of 7 pm every day, so that the ultrahigh frequency RFID read-write device 102 automatically transmits an ultrahigh frequency signal.

In general, an electronic tag is also called a radio frequency tag, a transponder and a data carrier, and the electronic tag and a reader realize space (non-contact) coupling of radio frequency signals through a coupling element; and in the coupling channel, energy transmission and data exchange are realized according to the time sequence relation.

As shown in fig. 2, a schematic structural diagram of an ultra-high frequency RFID tag according to an embodiment of the present application is shown. As shown, the uhf RFID tag 200 is attached to one or more fixed assets, and the uhf RFID tag 200 includes:

The memory 201 is used for storing management information of the attached fixed asset and a tag identification code containing the management information, which is formed by encoding according to a preset encoding rule.

In this embodiment, the attachment manner of the uhf RFID tag 200 to one or more fixed assets includes, but is not limited to, adhesive attachment, suspension, clamping slot attachment, screw attachment, etc.

In this embodiment, the preset encoding rule is converted into a certain regular encoding image or sequence combination according to some common management information of the fixed asset, so that the security of the management information is greatly increased.

In this embodiment, the management information includes: the fixed asset name, fixed asset model, fixed asset geographic location, fixed asset job number, factory information, purchasers, fixed asset price, purchase time, age, maintenance record, in-use information, and in-use case any one or more combinations.

In an embodiment of the present application, the working frequency of the ultrahigh frequency RFID electronic tag is ultrahigh frequency (300 MHz-3000 MHz), and the tag identification code is a unique electronic code or serial number corresponding to each fixed asset.

In this embodiment, each ultrahigh frequency RFID electronic tag has a unique electronic code, and the high-capacity electronic tag has a storage space that can be written by a user, and is attached to an object to identify a target object.

Specifically, the tag identification code is a unique electronic code or serial number corresponding to each fixed asset.

And the antenna unit 202 is used for transmitting an ultrahigh frequency signal with the ultrahigh frequency RFID reader-writer to perform wireless communication.

In this embodiment, the antenna unit 202 is not powered, so it can only be excited by the rf signal sent by the uhf RFID reader or reader, and cannot actively transmit the rf signal.

Fig. 3 is a schematic structural diagram of an ultrahigh frequency RFID read-write device according to an embodiment of the application. As shown, the ultra-high frequency RFID read/write device 300 includes: an ultrahigh frequency RFID transceiver module 301, a microcontroller module 302, and a communication module 303.

In an embodiment of the present application, the uhf RFID transceiver module 301 is configured to transmit an uhf signal according to a control instruction of the micro-controller module 302, and receive the uhf signal reflected by the uhf RFID tag 200 shown in fig. 2 for identifying different fixed assets.

The ultra-high frequency RFID transceiver module 301 includes: the device comprises a frequency synthesis circuit, a radio frequency power amplification circuit, an antenna switching circuit, a low noise amplification circuit, a down-mixing circuit, an intermediate frequency amplification circuit and an intermediate frequency filtering shaping circuit.

In this embodiment, each circuit in the uhf RFID transceiver module 301 is mainly used for processing radio frequency signals. Such as radio frequency power amplifiers (english names), abbreviated as "power amplifiers", are an important component of various wireless transmitters. The main technical indexes of the radio frequency power amplifier are output power and efficiency. In addition, the harmonic components in the output should be as small as possible to avoid interference with other channels. In the front-stage circuit of the transmitter, the power of the radio frequency signal generated by the modulation oscillation circuit is very small, and the radio frequency signal can be fed to an antenna to radiate after a series of amplifying-buffering stages, an intermediate amplifying stage and a final power amplifier are needed to obtain enough radio frequency power. In order to obtain a sufficiently large rf output power, an rf power amplifier must be employed.

In this embodiment, the antenna switching circuit is configured to transmit a radio frequency signal (ultrahigh frequency signal) with the ultrahigh frequency RFID electronic tag 200 shown in fig. 2, so as to perform wireless communication, and can implement reading or writing operation of the tag identification code and the memory data.

In an embodiment of the present application, the micro-controller module 302 is communicatively connected to the uhf RFID transceiver module 301, and is configured to generate a control instruction and send the control instruction to the uhf RFID transceiver module 301 to enable the control instruction to transmit a radio frequency signal, and demodulate after receiving the uhf signal reflected by the uhf RFID tag 200 shown in fig. 2 to obtain a tag identification code including the management information corresponding to the fixed asset and formed by encoding according to a preset encoding rule, so as to send the tag identification code to the cloud.

The microcontroller module 302 automatically generates and transmits the control command to the ultrahigh frequency RFID transceiver module 301 according to a preset fixed period; or, the microcontroller module 302 is manually caused to generate and send the control command to the ultra-high frequency RFID transceiver module 301.

In particular, after the reflected uhf signal is obtained, the signal needs to be demodulated to obtain the tag identification code.

In this embodiment, the predetermined fixed period may be once a day, once a week, or the like.

In an embodiment of the present application, the mobile communication module 303 is communicatively connected to the micro-controller module 302, and is configured to send the tag identification code to the cloud end, so that the cloud end decodes the management information included in the tag identification code according to a preset encoding rule.

In this embodiment, the micro-controller module 302 may be a high-performance, low-cost and low-power ARM, which controls each module of the ultra-high frequency RFID reader to work, and the micro-controller module implements a communication interface protocol of a cloud technology platform

In this embodiment, the micro-controller module 302 may be a micro-control unit (Microcontroller Unit; MCU), or a single-chip Microcomputer (SINGLE CHIP Microcomputer) or a single-chip Microcomputer, or may be a single-core microprocessor or a multi-core microprocessor. The microcontroller module 302 may also be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but may also be a digital signal processor (DIGITAL SIGNAL Processing, DSP), application Specific Integrated Circuit (ASIC), field-Programmable gate array (FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components.

The mobile communication module 303 includes: a four-frequency GSM communication unit or a four-frequency GPRS communication unit, an antenna unit, a DCDC power supply circuit and a SIM card seat circuit.

It should be noted that the present application is not limited to the four-frequency GSM communication unit or the four-frequency GPRS communication unit, and may also include, for example, a WIFI communication unit, a 4G communication unit, and the like.

In this embodiment, the micro-controller module 302 can control (3GPP TS 27.007,27.005 and SIMCOM to add AT command sets) the mobile communication module to operate and wirelessly transmit data.

In an embodiment of the present application, the ultra-high frequency RFID read/write device 300 further includes: the power management module is used for supplying power to each module; and the LED indicator lamp module is in communication connection with the microcontroller module and is used for indicating the running states of the ultrahigh frequency RFID transceiver module, the microcontroller module and the communication module.

For example, the LED indicator module indicates the operation state of the corresponding uhf RFID transceiver module according to the control command sent by the microcontroller module 302 to the uhf RFID transceiver module 301.

In this embodiment, the ultrahigh frequency RFID read/write device 300 is stationary. Of course, the ultra-high frequency RFID reader 300 may also be a mobile handset.

When the uhf RFID reader 300 is mobile, the micro controller module 302 may further encode and decode the tag identification code according to a preset encoding rule, thereby obtaining the management information contained therein, and adding or modifying the management information. And the management information of the fixed asset can be manually checked or modified on site.

For example, if a condition occurs in a fixed asset on site, such as damage, the management information needs to be updated on site in time, so that the status of the fixed asset can be mastered remotely in real time, and the asset management and inventory efficiency is improved.

Fig. 4 is a schematic diagram of a cloud end for fixed asset management according to an embodiment of the application. As shown, the cloud 400 includes:

A communicator 401 for communicating with the ultra-high frequency RFID read/write device 300 shown in fig. 3 to obtain a tag identification code containing the management information encoded according to a preset encoding rule. The specific communication manner corresponds to the mobile communication module 303 of the ultra-high frequency RFID read/write device 300 shown in fig. 3.

In this embodiment, the communicator 401 is configured to implement communication connection between other devices (such as a client, a controller, a read-write library, and a read-only library). Which may include one or more sets of modules of different communication means. The communication connection may be one or more wired/wireless communication means and combinations thereof. The communication mode comprises the following steps: any one or more of the internet, CAN, intranet, wide Area Network (WAN), local Area Network (LAN), wireless network, digital Subscriber Line (DSL) network, frame relay network, asynchronous Transfer Mode (ATM) network, virtual Private Network (VPN), and/or any other suitable communication network. For example: any one or more of WIFI, bluetooth, NFC, GPRS, GSM, and ethernet.

A processor 402, configured to encode a formed tag identification code containing the management information corresponding to the fixed asset according to a preset encoding rule, so as to write or modify the management information corresponding to the tag identification code; and forming visual data in the form of a report or a graph according to the management information.

In this embodiment, the processor 402 decodes the tag identifier according to a predetermined encoding rule to obtain the management information corresponding to the fixed asset.

In this embodiment, visual data in the form of a report or a graph may also be automatically generated according to the management information, so as to intuitively and conveniently understand the inventory condition of the fixed asset, and improve asset management efficiency.

In this embodiment, the processor 402 may be a general-purpose processor, including a central processing unit (Central Processing Unit, abbreviated as CPU), a network processor (Network Processor, abbreviated as NP), etc.; but may also be a digital signal processor (DIGITAL SIGNAL Processing, DSP), application Specific Integrated Circuit (ASIC), field-Programmable gate array (FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components.

And a memory 403 for storing the management information.

In this embodiment, the memory 403 stores management information of each inventory, and stores the management information according to each acquired data classification.

In this embodiment, the memory 403 may include a random access memory (Random Access Memory, abbreviated as RAM), and may further include a non-volatile memory (non-volatile memory), such as at least one disk memory.

In this embodiment, the cloud end 400 for fixed asset management is preferably built in a constant temperature and humidity environment, and is kept in a startup running state for 24 hours.

Referring to fig. 5, a schematic structural diagram of a fixed asset cloud management system based on ultra-high frequency RFID according to an embodiment of the present application is shown. As shown, the system 500 includes:

One or more ultra-high frequency RFID electronic tags 501 as shown in fig. 2, each attached to a different fixed asset; each of the uhf RFID tags 501 is encoded according to a preset encoding rule to form tag information including management information corresponding to the fixed asset.

The uhf RFID read/write device 502 shown in fig. 3 is configured to transmit an uhf signal, receive the uhf signal reflected by the uhf RFID electronic tag 501, demodulate the uhf signal to obtain tag information corresponding to the uhf RFID electronic tag 501 and including management information corresponding to the fixed asset, and send the tag information to the cloud end 504;

The cloud 503 for fixed asset management as shown in fig. 4 is configured to obtain the tag information, and decode the tag information according to the preset encoding rule to obtain management information corresponding to the fixed asset contained in the tag information for management.

In this embodiment, the ultra-high frequency RFID electronic tag 501, the ultra-high frequency RFID read-write device 502, and the cloud 503 for fixed asset management are used to form the ultra-high frequency RFID-based fixed asset cloud management system 500, and the application scenario thereof may refer to the scenario diagram shown in fig. 1.

In summary, the ultrahigh frequency RFID electronic tag, the read-write device, the cloud end and the cloud management system are provided. Each ultrahigh frequency RFID electronic tag is encoded according to a preset encoding rule to form tag information containing management information corresponding to the fixed asset through one or more ultrahigh frequency RFID electronic tags attached to different fixed assets; the ultrahigh frequency RFID read-write device is used for transmitting an ultrahigh frequency signal, receiving the ultrahigh frequency signal reflected by the ultrahigh frequency RFID electronic tag, demodulating the ultrahigh frequency signal to obtain tag information corresponding to the ultrahigh frequency RFID electronic tag and containing management information corresponding to the fixed asset, and sending the tag information to the cloud; and the cloud end is used for acquiring the tag information, decoding the tag information through the preset coding rule to acquire management information, which is contained in the tag information and corresponds to the fixed asset, for management.

The application effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present application and its effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all equivalent modifications and variations of the application be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (9)

1. An ultra-high frequency RFID tag attached to one or more fixed assets, the ultra-high frequency RFID tag comprising:

the storage is used for storing management information of the attached fixed asset and a tag identification code which is formed by encoding according to a preset encoding rule and contains the management information;

the antenna unit is used for transmitting an ultrahigh frequency signal with the ultrahigh frequency RFID reader-writer to perform wireless communication, and after receiving a control instruction sent by the ultrahigh frequency RFID reader-writer, the antenna unit reflects the ultrahigh frequency signal containing the tag identification code back to the ultrahigh frequency RFID reader-writer; the control instruction is automatically generated by the ultrahigh frequency RFID reader-writer according to a fixed period and is sent to the antenna unit so as to assist in realizing unmanned asset information management;

The management information includes: any one or more of a fixed asset name, a fixed asset model, a fixed asset work number, factory information, a purchaser, a fixed asset price, a purchase time, a service life, a maintenance record, in-user information, and in-use conditions.

2. The ultra-high frequency RFID electronic tag of claim 1, wherein the operating frequency of the ultra-high frequency RFID electronic tag is ultra-high frequency (300 MHz-3000 MHz), and the tag identification code is a unique electronic code or serial number corresponding to each fixed asset.

3. An ultrahigh frequency RFID read-write device, characterized in that the ultrahigh frequency RFID read-write device comprises: the system comprises an ultrahigh frequency RFID transceiver module, a microcontroller module and a communication module;

The ultrahigh frequency RFID transceiver module is used for transmitting ultrahigh frequency signals according to the control instruction of the microcontroller module and receiving the ultrahigh frequency signals reflected by the ultrahigh frequency RFID electronic tags for identifying different fixed assets;

The microcontroller module is in communication connection with the ultrahigh frequency RFID transceiver module, and is used for generating a control instruction and sending the control instruction to the ultrahigh frequency RFID transceiver module so as to enable the ultrahigh frequency RFID transceiver module to transmit a radio frequency signal, demodulating the ultrahigh frequency signal after receiving the ultrahigh frequency signal reflected by the ultrahigh frequency RFID electronic tag so as to acquire a tag identification code which is formed by encoding according to a preset encoding rule and contains management information corresponding to a fixed asset, and sending the tag identification code to the cloud, wherein the microcontroller module automatically generates and sends the control instruction to the ultrahigh frequency RFID transceiver module according to a preset fixed period so as to enable the cloud to write or modify the management information corresponding to the tag identification code; forming visual data in a report form or a graphic form according to the management information so as to assist in realizing unmanned asset information management;

The communication module is in communication connection with the microcontroller module and is used for sending the tag identification code to the cloud end so that the cloud end can decode the management information contained in the tag identification code according to a preset coding rule;

The management information includes: any one or more of a fixed asset name, a fixed asset model, a fixed asset work number, factory information, a purchaser, a fixed asset price, a purchase time, a service life, a maintenance record, in-user information, and in-use conditions.

4. The uhf RFID read-write device of claim 3, wherein the microcontroller module is manually caused to generate and send the control command to the uhf RFID transceiver module.

5. The uhf RFID read-write device according to claim 3, wherein the uhf RFID transceiver module comprises: the device comprises a frequency synthesis circuit, a radio frequency power amplification circuit, an antenna switching circuit, a low noise amplification circuit, a down-mixing circuit, an intermediate frequency amplification circuit and an intermediate frequency filtering shaping circuit.

6. The ultra-high frequency RFID read-write device according to claim 3, wherein the communication module includes: a four-frequency GSM communication unit or a four-frequency GPRS communication unit, an antenna unit, a DCDC power supply circuit and a SIM card seat circuit.

7. The ultra-high frequency RFID read-write device according to claim 3, further comprising:

the power management module is used for supplying power to each module;

and the LED indicator lamp module is in communication connection with the microcontroller module and is used for indicating the running states of the ultrahigh frequency RFID transceiver module, the microcontroller module and the communication module.

8. A cloud for fixed asset management, the cloud comprising:

the communicator is used for communication connection to acquire a tag identification code which is formed by encoding according to a preset encoding rule and contains management information;

The processor is used for encoding the formed tag identification code containing the management information corresponding to a fixed asset according to a preset encoding rule so as to write or modify the management information corresponding to the tag identification code; forming visual data in a report form or a graphic form according to the management information;

A memory for storing the management information;

The ultrahigh frequency RFID read-write device automatically generates and sends a control command to the ultrahigh frequency RFID electronic tag according to a fixed period to transmit an ultrahigh frequency signal to the ultrahigh frequency RFID electronic tag, automatically demodulates the reflected ultrahigh frequency signal to obtain a tag identification code, then uploads the tag identification code to the cloud end of the fixed asset management through the communicator, decodes the tag identification code by the processor of the cloud end of the fixed asset management to obtain management information contained in the tag identification code, stores the management information into the memory, and forms visual data in a report form or a graphic form according to the management information so as to assist in realizing unmanned asset information management;

The management information includes: any one or more of a fixed asset name, a fixed asset model, a fixed asset work number, factory information, a purchaser, a fixed asset price, a purchase time, a service life, a maintenance record, in-user information, and in-use conditions.

9. A fixed asset cloud management system based on ultra-high frequency RFID, the system comprising:

One or more ultra-high frequency RFID electronic tags according to any one of claims 1-2, each attached to a different fixed asset; each ultrahigh frequency RFID electronic tag is encoded according to a preset encoding rule to form tag information containing management information corresponding to the fixed asset;

The ultrahigh frequency RFID read-write device according to any one of claims 3 to 7, which is configured to transmit an ultrahigh frequency signal, receive the ultrahigh frequency signal reflected by the ultrahigh frequency RFID electronic tag, obtain tag information corresponding to the ultrahigh frequency RFID electronic tag and including management information corresponding to the fixed asset through demodulation, and send the tag information to a cloud;

the cloud end for fixed asset management according to claim 8, wherein the cloud end is configured to obtain the tag information, and decode the tag information according to the preset encoding rule to obtain management information corresponding to the fixed asset contained in the tag information for management;

the ultrahigh frequency RFID read-write device automatically generates and sends the control instruction according to a fixed period to emit an ultrahigh frequency signal to the ultrahigh frequency RFID electronic tag, automatically demodulates the reflected ultrahigh frequency signal to obtain a tag identification code, then uploads the tag identification code to a cloud for fixed asset management, decodes the tag identification code by the cloud for fixed asset management to obtain management information contained in the tag identification code, writes or modifies the management information corresponding to the tag identification code, and forms visual data in a report form or a graphic form according to the management information so as to realize unmanned asset information management;

The management information includes: any one or more of a fixed asset name, a fixed asset model, a fixed asset work number, factory information, a purchaser, a fixed asset price, a purchase time, a service life, a maintenance record, in-user information, and in-use conditions.