CN117650855A

CN117650855A - Passive Internet of things excitation power scheduling method, system, equipment and storage medium

Info

Publication number: CN117650855A
Application number: CN202311619540.3A
Authority: CN
Inventors: 王瑞; 吴晓; 吕严; 顾珺菲; 陈菲雨; 赵玉婷; 龚淑蕾; 杨博涵
Original assignee: China Mobile Zijin Jiangsu Innovation Research Institute Co ltd; China Mobile Communications Group Co Ltd; China Mobile Group Jiangsu Co Ltd
Current assignee: China Mobile Zijin Jiangsu Innovation Research Institute Co ltd; China Mobile Communications Group Co Ltd; China Mobile Group Jiangsu Co Ltd
Priority date: 2023-11-29
Filing date: 2023-11-29
Publication date: 2024-03-05

Abstract

The application provides a passive Internet of things excitation power scheduling method, a system, equipment and a storage medium, which relate to the technical field of radio frequency communication, and adopt a central node, a distributed node and a passive RFID tag to form a transceiver separation reader-writer, wherein the passive Internet of things excitation power scheduling method comprises the following steps: the control center node issues control instructions to each distributed node; controlling each distributed node to transmit a first excitation signal to each passive RFID tag corresponding to each distributed node according to the control instruction; receiving, by the central node, a first reflected signal reflected by each passive RFID tag in response to the first excitation signal; and generating excitation power scheduling information of each distributed node by the central node according to the received signal strength of each first reflected signal, and scheduling the excitation power of each distributed node by the central node according to the excitation power scheduling information. By adopting the method and the device, energy can be saved under the condition that the operation efficiency of the system is not affected.

Description

Passive Internet of things excitation power scheduling method, system, equipment and storage medium

Technical Field

The present disclosure relates to the field of radio frequency communications technologies, and in particular, to a method, a system, an apparatus, and a storage medium for passive internet of things excitation power scheduling.

Background

The product forms of the passive internet of things are divided into a handheld integrated reader-writer, a fixed integrated reader-writer and a transceiver separation reader-writer, the receiving sensitivity of the passive internet of things is different from the influence of the product performance, the excitation power is in a fixed range of 0-33dBm, and the emission power in the excitation process is a fixed value during the working period.

The conventional power adjustment scheme takes energy conservation of an RFID (radio frequency identification) system as a guide, and the direction of an active RFID tag and the distance value from the active RFID tag to a reader-writer are measured through a preset camera device and a laser ranging device to obtain the transmitting power of the corresponding reader-writer, and then a reading instruction is sent to the electronic tag according to the direction of the electronic tag and the transmitting power of the corresponding RFID reader, so that the transmitting power of the RFID system is saved, and the effect of reducing electromagnetic radiation to the environment is achieved.

However, the scheme is designed only for reducing the emission power of the reader-writer, the tag activation efficiency is reduced due to the demanding power saving, the whole tag reading capability of the system is restricted, the system structure is more complex due to the additional camera and the laser ranging device, and the resource scheduling load of the reader-writer is increased, so that the operation efficiency of the system is affected.

Disclosure of Invention

The main purpose of the application is to provide a passive internet of things excitation power scheduling method, a system, equipment and a storage medium, which aim to solve the technical problem that a conventional power adjustment scheme can influence the operation efficiency of a system.

In order to achieve the above objective, the present application provides a passive internet of things excitation power scheduling method, where the passive internet of things excitation power scheduling method is applied to a passive internet of things excitation power scheduling system, and the passive internet of things excitation power scheduling system includes: a transceiver separation reader-writer; the transceiver separation reader/writer includes: the system comprises a central node, a plurality of distributed nodes corresponding to the central node and a plurality of passive RFID tags corresponding to the distributed nodes respectively;

the passive internet of things excitation power scheduling method comprises the following steps:

issuing a control instruction to each distributed node through the central node;

transmitting a first excitation signal to each passive RFID tag corresponding to each distributed node through each distributed node according to the control instruction;

receiving, by the central node, a first reflected signal from each of the passive RFID tags in response to the first excitation signal;

And generating excitation power scheduling information of each distributed node by the central node according to the received signal strength of each first reflected signal, and scheduling the excitation power of each distributed node by the central node according to the excitation power scheduling information.

Optionally, in a possible embodiment, the step of transmitting, by each of the distributed nodes, a first excitation signal to each of the passive RFID tags corresponding to each of the distributed nodes according to the control instruction includes:

setting the respective initialization excitation power of each distributed node according to the preset excitation power through the central node;

after detecting that each distributed node receives the control instruction, transmitting a first excitation signal to each passive RFID tag corresponding to each distributed node by each distributed node at an initialization excitation power.

Optionally, in a possible embodiment, the step of generating, by the central node, excitation power scheduling information of each distributed node according to an acceptable signal strength of each first reflected signal includes:

respectively calculating the average received signal strength of the first reflected signals corresponding to each distributed node through the central node;

And generating excitation power scheduling information of each distributed node according to each average received signal strength through the central node.

Optionally, in a possible embodiment, the step of generating, by the central node, excitation power scheduling information of each distributed node according to each average received signal strength includes:

comparing each average received signal strength with a preset reference received signal strength interval through the central node;

if the first target average received signal strength greater than the upper threshold of the reference received signal strength interval exists in each average received signal strength, reducing the excitation power of a first target distributed node corresponding to the first target average received signal strength according to a preset regulation rule through the central node;

if the second target average received signal strength smaller than the lower threshold of the reference received signal strength interval exists in each average received signal strength, increasing the excitation power of a second target distributed node corresponding to the second target average received signal strength according to the adjustment rule through the central node;

Outputting a first excitation signal to each passive RFID tag corresponding to each distributed node by each distributed node according to each new excitation power of each distributed node, and returning to execute the step of receiving the first reflection signal reflected by each passive RFID tag in response to the first excitation signal by the central node until each average received intensity is within the reference received signal intensity interval, and storing the current excitation power of each distributed node into excitation power scheduling information by the central node according to a preset format to generate excitation power scheduling information.

Optionally, in a possible embodiment, after the step of scheduling, by the central node, the excitation power of each of the distributed nodes according to the excitation power scheduling information, the method further includes:

issuing an excitation power configuration instruction and the excitation power scheduling information to each distributed node through the central node;

acquiring respective target excitation power of each distributed node in the excitation power scheduling information according to the excitation power configuration instruction through each distributed node;

Outputting a second excitation signal to each passive RFID tag corresponding to each distributed node through each distributed node according to each target excitation power;

receiving, by the central node, a second reflected signal from each of the passive RFID tags in response to the second excitation signal;

and analyzing each second reflection signal through the central node to obtain tag information of each passive RFID tag.

Optionally, in a possible embodiment, the method further includes:

in the running process, the excitation power scheduling information is adaptively adjusted by the central node based on the current second reflected signal;

and/or that the number of the groups of groups,

and adjusting the excitation power scheduling information according to the acquired influence factors by the central node, wherein the influence factors comprise: environmental conditions, tag size, tag mobility, and job requirements.

Optionally, in a possible embodiment, the passive internet of things excitation power scheduling system further includes: a management platform;

after the step of parsing each of the second reflected signals by the central node to obtain tag information of each of the passive RFID tags, the method further includes:

Outputting each piece of label information to the management platform through the central node, and inputting each piece of label information into a preset data analysis template through the management platform to obtain a data analysis result and a visual report of each piece of label information;

and when the data analysis result is inconsistent with the preset normal data, generating and outputting alarm information through the management platform.

In addition, in order to achieve the above objective, the present application further provides a passive internet of things excitation power dispatching system, where the passive internet of things excitation power dispatching system is a virtual device, and the passive internet of things excitation power dispatching system includes: a transceiver separation reader-writer; the transceiver separation reader/writer includes: the system comprises a central node, a plurality of distributed nodes corresponding to the central node and a plurality of passive RFID tags corresponding to the distributed nodes respectively;

the passive internet of things excitation power scheduling system further comprises:

the instruction issuing module is used for issuing control instructions to the distributed nodes through the central node;

the excitation module is used for transmitting a first excitation signal to each passive RFID tag corresponding to each distributed node through each distributed node according to the control instruction;

A reflection module for receiving, by the central node, a first reflected signal reflected by each of the passive RFID tags in response to the first excitation signal;

the scheduling module is used for generating excitation power scheduling information of each distributed node according to the received signal strength of each first reflected signal through the central node, and scheduling the excitation power of each distributed node according to the excitation power scheduling information through the central node.

In addition, in order to achieve the above object, the present application further provides a passive internet of things excitation power scheduling device, where the passive internet of things excitation power scheduling device includes: the system comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the computer program is executed by the processor to realize the steps of the passive internet of things excitation power scheduling method.

The application further provides a storage medium, which is a computer readable storage medium, and the storage medium stores a computer program, and the computer program realizes the steps of the passive internet of things excitation power scheduling method when being executed by a processor.

The application provides a passive internet of things excitation power dispatching method, a system, equipment and a storage medium, wherein the passive internet of things excitation power dispatching method is applied to a passive internet of things excitation power dispatching system, and the passive internet of things excitation power dispatching system comprises the following steps: a transceiver separation reader-writer; the transceiver separation reader/writer includes: the system comprises a central node, a plurality of distributed nodes corresponding to the central node and a plurality of passive RFID tags corresponding to the distributed nodes respectively; the passive internet of things excitation power scheduling method comprises the following steps: issuing a control instruction to each distributed node through the central node; transmitting a first excitation signal to each passive RFID tag corresponding to each distributed node through each distributed node according to the control instruction; receiving, by the central node, a first reflected signal from each of the passive RFID tags in response to the first excitation signal; and generating excitation power scheduling information of each distributed node by the central node according to the received signal strength of each first reflected signal, and scheduling the excitation power of each distributed node by the central node according to the excitation power scheduling information.

Compared with the conventional technical means of calculating the transmitting power of the reader-writer through the direction of the active RFID tag and the distance value from the reader-writer, the passive Internet of things exciting power scheduling method adopts the central node, the distributed nodes and the passive RFID tag to form the transmitting-receiving separation reader-writer, the central node and the distributed nodes can be deployed in a one-to-many networking mode, the distributed nodes and the passive RFID tag are deployed in a one-to-many mode, a control instruction is issued to each distributed node through the central node, each distributed node transmits an exciting signal to each passive RFID tag with default exciting power, the central node receives first reflecting signals reflected by the passive RFID tag, the central node can judge whether the exciting power of each distributed node is larger or smaller according to each first reflecting signal corresponding to each distributed node, and then the exciting power of each distributed node is adjusted according to a judging result.

Therefore, the method for realizing dynamic excitation power scheduling of the distributed node based on the transceiver separation reader-writer formed by the central node, the distributed node and the passive RFID tag is compared with the traditional mode of calculating the transmission power of the reader-writer through the direction of the active RFID tag and the distance value from the reader-writer, and the passive-linked excitation power scheduling method can reduce the overall excitation power under the condition of ensuring the efficiency of a labeler without setting additional hardware devices, so that energy is saved under the condition of not influencing the operation efficiency of a system.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a passive internet of things excitation power scheduling device in a device hardware operating environment according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an implementation flow of a first embodiment of a passive Internet of things excitation power scheduling method according to the present application;

FIG. 3 is a system architecture interaction diagram of a transceiver-separation reader-writer according to an embodiment of the passive Internet of things excitation power scheduling method of the present application;

FIG. 4 is a business flow diagram of an embodiment of a passive Internet of things excitation power scheduling method of the present application;

FIG. 5 is a diagram of an implementation scenario of an embodiment of a passive Internet of things excitation power scheduling method of the present application;

fig. 6 is a schematic diagram of functional modules of a passive-coupled-thing excitation power dispatching system according to an embodiment of the present application.

The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

The passive internet of things product is divided into a handheld integrated reader-writer, a fixed integrated reader-writer and a transceiver separation reader-writer, the receiving sensitivity of the passive internet of things product is different under the influence of the product performance, the excitation power is in a fixed range of 0-33dBm, and the emission power in the excitation process is a fixed value during the working period.

The conventional power adjustment scheme takes energy conservation of an RFID system as a guide, and the direction of an active RFID tag and the distance value from the active RFID tag to a reader-writer are measured through a preset camera device and a laser ranging device to obtain the transmitting power of the corresponding reader-writer, and then a reading instruction is sent to the electronic tag according to the direction of the electronic tag and the transmitting power of the corresponding RFID reader-writer, so that the transmitting power of the RFID system is saved, and the effect of reducing electromagnetic radiation to the environment is achieved.

In view of the above problems, the present application provides a passive internet of things excitation power scheduling method, a system, a device and a storage medium, where the passive internet of things excitation power scheduling method is applied to a passive internet of things excitation power scheduling system, and the passive internet of things excitation power scheduling system includes: a transceiver separation reader-writer; the transceiver separation reader/writer includes: the system comprises a central node, a plurality of distributed nodes corresponding to the central node and a plurality of passive RFID tags corresponding to the distributed nodes respectively; the passive internet of things excitation power scheduling method comprises the following steps: issuing a control instruction to each distributed node through the central node; transmitting a first excitation signal to each passive RFID tag corresponding to each distributed node through each distributed node according to the control instruction; receiving, by the central node, a first reflected signal from each of the passive RFID tags in response to the first excitation signal; and generating excitation power scheduling information of each distributed node by the central node according to the received signal strength of each first reflected signal, and scheduling the excitation power of each distributed node by the central node according to the excitation power scheduling information.

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a passive-linked excitation power scheduling device in a device hardware operating environment according to an embodiment of the present application.

It should be noted that, the terminal device related to the embodiment of the present invention may be a data storage control terminal in a passive internet of things excitation power scheduling system that executes the passive internet of things excitation power scheduling method of the present application.

As shown in fig. 1, the passive thing excitation power scheduling device may include: a processor 1001, such as a CPU, memory 1005, and a communication bus 1002. Wherein a communication bus 1002 is used to enable connected communication between the processor 1001 and a memory 1005. The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.

Optionally, the passive internet of things excitation power dispatching device may further include a user interface 1003, a network interface 1004, a camera, RF (radio frequency) circuitry, sensors, audio circuitry, wiFi modules, and the like. The user interface may comprise a Display, an input sub-module such as a Keyboard (Keyboard), and optionally may comprise a standard wired interface, a wireless interface. The network interface may optionally include a standard wired interface, a wireless interface (e.g., WIFI interface).

Those skilled in the art will appreciate that the passive thing excitation power dispatching device structure shown in fig. 1 does not constitute a limitation of the passive thing excitation power dispatching device, and may include more or fewer components than shown, or may combine certain components, or may be a different arrangement of components.

As shown in fig. 1, an operating system, a network communication module, a user interface module, and a computer program may be included in the memory 1005, which is a type of computer-readable storage medium. The operating system is a program that manages and controls the hardware and software resources of the passive Internet of things excitation power scheduling device, supporting the execution of computer programs and other software and/or programs. The network communication module is used for realizing communication among components in the memory 1005 and other hardware and software in the passive internet of things excitation power dispatching system.

In the passive thing excitation power scheduling device shown in fig. 1, the processor 1001 is configured to execute a computer program stored in the memory 1005, and perform the following operations:

Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:

and/or that the number of the groups of groups,

Based on the above structure, various embodiments of a passive internet of things excitation power scheduling method are presented.

In a first embodiment of the passive-internet-of-things excitation power scheduling method of the present application, please refer to fig. 2, fig. 2 is a flow chart of the first embodiment of the passive-internet-of-things excitation power scheduling method of the present application.

Embodiments of the present invention provide embodiments of passive-internet-of-things excitation power scheduling methods, it being noted that although a logic sequence is shown in the flow diagrams, in some cases the steps shown or described may be performed in a different order than that shown or described herein. In this embodiment, the execution body of the passive internet of things excitation power scheduling method is a passive internet of things excitation power scheduling system, and for convenience of description, the execution body is omitted from explanation of each embodiment. In this embodiment, the passive internet of things excitation power scheduling method is applied to a passive internet of things excitation power scheduling system, where the passive internet of things excitation power scheduling system includes: a transceiver separation reader-writer; the transceiver separation reader/writer includes: the system comprises a central node, a plurality of distributed nodes corresponding to the central node and a plurality of passive RFID tags corresponding to the distributed nodes respectively;

step S10, issuing a control instruction to each distributed node through the central node;

in this embodiment, the central node, the distributed nodes and the passive RFID tag form a transceiver-separated reader-writer, the central node and the distributed nodes are deployed in a one-to-many networking manner, and the distributed nodes and the passive RFID tag are deployed in a one-to-many manner.

In this embodiment, when a user schedules a service by using passive internet of things excitation power, the user needs to normalize the excitation power of each distributed node, and when the excitation power of the distributed node is normalized, the user activates the initialization tag inventory service first, and then the central node issues a control instruction to each distributed node to control each distributed node to execute a distributed node excitation power normalization program.

Step S20, transmitting a first excitation signal to each passive RFID tag corresponding to each distributed node through each distributed node according to the control instruction;

it should be noted that, in this embodiment, for convenience of subsequent description, each passive RFID tag is grouped according to a corresponding distributed node, for example, a passive RFID tag responsible for activation by a first distributed node is tag a, tag b, tag c, and tag d, and then tag a, tag b, tag c, and tag d belong to the first group.

In this embodiment, each distributed node, upon receiving a control command, transmits an excitation signal to all passive RFID tags within the respective group at a default excitation power in response to the control command to activate all passive RFID tags.

Specifically, in one possible embodiment, the step S20 of transmitting, by each of the distributed nodes, the first excitation signal to each of the passive RFID tags corresponding to each of the distributed nodes according to the control instruction includes:

step S201, setting the respective initialization excitation power of each distributed node according to the preset excitation power through the central node;

step S202, after detecting that each distributed node receives the control instruction, transmitting, by each distributed node, a first excitation signal to each passive RFID tag corresponding to each distributed node with an initialization excitation power.

In this embodiment, the user needs to set an initialized excitation power P before performing power adjustment on the transceiver-splitting reader-writer _init ，P _init The setting may be performed empirically by the user, and is not limited herein.

In this embodiment, after outputting a control instruction to each distributed node, the central node sets the initialization excitation power of each distributed node, and sets the initialization excitation power of each distributed node to P _init And then, after receiving the control instruction, each distributed node outputs an excitation signal to each passive RFID tag in the coverage area of the distributed node by using the initialized excitation power to perform subsequent excitation power adjustment, and performs subsequent adjustment on the basis of the initialized excitation power.

Step S30, receiving, by the central node, a first reflected signal reflected by each of the passive RFID tags in response to the first excitation signal;

it should be noted that, in this embodiment, after the passive RFID tag receives the microwave signal, a part of the microwave energy may be converted into direct current to perform its operation, so the passive RFID tag may be excited by transmitting an electromagnetic wave signal to the passive RFID tag, and after the passive RFID tag is activated, the passive RFID tag may output data in an RFID chip in the passive RFID tag for other receiving devices to detect.

In this embodiment, after receiving the excitation signal transmitted by the distributed node, each passive RFID tag is activated by the excitation signal, and transmits the data signal of its own chip outwards, i.e. each first reflection signal center node continuously receives each first reflection signal.

Step S40, generating excitation power scheduling information of each distributed node according to the received signal strength of each first reflected signal by the central node, and scheduling the excitation power of each distributed node according to the excitation power scheduling information by the central node.

In this embodiment, the excitation power scheduling information is used to store the excitation power adjusted by each distributed node and each distributed node, and the format of the excitation power scheduling information may be various, and in this embodiment, the excitation power scheduling information may be, for example, an excitation power schedule.

In this embodiment, after receiving each first reflected signal, the central node groups each first reflected signal according to a corresponding distributed node, calculates an average value of received signal intensities of each received first reflected signal, adjusts excitation power of each distributed node according to each average value, stores the adjusted excitation power of each distributed node and the distributed node in excitation power scheduling information correspondingly, and sets excitation power of each distributed node according to the excitation power scheduling information when a passive internet of things excitation power scheduling service is subsequently passed.

An exemplary passive-internet-of-things excitation power scheduling system includes a transceiver-separation reader-writer, please refer to fig. 3, fig. 3 is a system architecture interaction diagram of the transceiver-separation reader-writer according to an embodiment of the passive-internet-of-things excitation power scheduling method of the present application, as shown in fig. 3, a central node, i.e., a receiver, abbreviated as an R node, a distributed node, i.e., an exciter, abbreviated as a Q node, and each of the distributed nodes is respectively referred to as a Q node ₁ To Q _N Each Q node is corresponding to a plurality of passive tags, when the Q node excitation power is standardized and the excitation power scheduling service is carried out through the passive Internet of things, the R node transmits excitation signaling to each Q node, each Q node responds to the excitation signaling and transmits excitation signals to each passive tag, then the R node reads the information and the signal strength of each passive tag, and when the Q node excitation power is standardized, the R node transmits excitation signals to each passive tagAnd adjusting the excitation intensity of each Q node according to the signal intensity of each group of labels, and correspondingly storing the adjusted excitation intensity of each Q node and the Q node in excitation power scheduling information so as to call each adjusted excitation intensity when carrying out passive Internet of things excitation power scheduling service.

Further, based on the first embodiment of the passive internet of things excitation power scheduling method, a second embodiment of the passive internet of things excitation power scheduling method is provided.

In a second embodiment of the passive-internet-of-things excitation power scheduling method of the present application, in the step S40, the step of generating, by the central node, excitation power scheduling information of each of the distributed nodes according to the received signal strength of each of the first reflected signals includes:

step S401, respectively calculating average received signal strength of first reflected signals corresponding to each distributed node through the central node;

step S402, generating, by the central node, excitation power scheduling information of each distributed node according to each average received signal strength.

In this embodiment, after receiving each first reflected signal, the central node reads the received signal strength of each first reflected signal, then calculates the average received signal strength of all the first reflected signals in each group according to the tag packet, so as to obtain the average received signal strength corresponding to each Q node, and then adjusts the excitation power of each Q node according to the average received signal strength corresponding to each Q node, so that excitation power scheduling information is generated according to the adjusted excitation power of each Q node.

Further, in a possible embodiment, the step S402, generating, by the central node, excitation power scheduling information of each distributed node according to each average received signal strength includes:

step S4021, comparing, by the central node, each of the average received signal strengths with a preset reference received signal strength interval, respectively;

in this embodiment, when the user performs Q-node excitation power normalization, the reference received signal strength interval rstsi needs to be predefined _ref ＝[a,b]dBm, the setting of the upper limit and the lower limit of the reference received signal intensity interval can prevent the intensity of the received signal from being too large or too small, so that the problem of reduced label analysis efficiency caused by too large or too small intensity of the received signal is avoided.

In this embodiment, after the average received signal strength of each group is calculated, the average received signal strength of each group is compared with the reference received signal strength interval, and whether the average received signal strength of each group meets the reference received signal strength interval is determined.

Step S4022, if there is a first target average received signal strength greater than the upper threshold of the reference received signal strength interval in each average received signal strength, reducing, by the central node, excitation power of a first target distributed node corresponding to the first target average received signal strength according to a preset adjustment rule;

In the present embodiment, if there are one or more first target average received signal strength RSSIs in each average received signal strength ₁ (received signal strength), RSSI ₁ If the value of (a) is greater than b, then the RSSI is determined ₁ Corresponding one or more first target distributed nodes, and reducing one or more first targets according to a preset regulation ruleAnd the excitation power configuration parameters of the distributed nodes complete the excitation power scheduling of one or more first target distributed nodes.

It should be noted that, in this embodiment, the adjustment rule may adopt a step-type, linear-type or exponential-type function method, and the change rate parameters of the functions are defined as α, β, γ, that is, the change granularity of the power parameter configured by the R node each time, and the Q is configured by the R node to ensure the activation efficiency of the tag _i The node power uses a low rate of change parameter, which is not defined quantitatively herein.

In addition, when the excitation power configuration parameters of one or more first target distributed nodes are reduced, it is required to ensure that after the excitation power is reduced, the first reflection signals of the labels corresponding to the first target distributed nodes can still be normally received by the central node, so that the condition that the first reflection signals of part of labels cannot be received by the central node after the reduction and missed detection is avoided.

Step S4023, if there is a second target average received signal strength smaller than the lower threshold of the reference received signal strength interval in each of the average received signal strengths, increasing, by the central node, excitation power of a second target distributed node corresponding to the second target average received signal strength according to the adjustment rule;

in the present embodiment, if there are one or more first target average received signal strength RSSIs in each average received signal strength ₂ ，RSSI ₂ If the value of (a) is smaller than a, then the RSSI is determined ₂ And adding excitation power configuration parameters of the one or more second target distributed nodes according to a preset regulation rule by the corresponding one or more second target distributed nodes to complete excitation power scheduling of the one or more second target distributed nodes.

In addition, when the excitation power of one or more second target distributed nodes is increased, the increased excitation power must not be greater than the maximum power that can be achieved by the distributed nodes.

Step S4024, outputting, by each of the distributed nodes, a first excitation signal to each of the passive RFID tags corresponding to each of the distributed nodes with each of the new excitation powers of each of the distributed nodes, and returning to the step of executing the step of receiving, by the central node, the first reflection signal reflected by each of the passive RFID tags in response to the first excitation signal until each of the average reception intensities is within the reference reception signal intensity interval, and storing, by the central node, each of the current excitation powers of each of the distributed nodes in the excitation power scheduling information according to a preset format, so as to generate excitation power scheduling information.

In this embodiment, the first excitation signal refers to a test excitation signal output from the Q node when the Q node excitation power is normalized, and the excitation power of the first excitation signal changes with the change of the excitation power of the Q node. The preset format needs to be able to correspond the distributed nodes to the excitation power and be able to be read and invoked by the distributed nodes.

In this embodiment, after the judgment and standardization of all the distributed nodes are completed, each distributed node is controlled to output a first excitation signal to the passive RFID tag in each area with the new excitation power after each standardization, the standardization process for the excitation power of the Q node is repeated until the average received signal strength of the tag in the packet corresponding to each Q node received by the central node is within the reference signal received strength, the standardization process is stopped, and the excitation power configuration parameters of each Q node at present and each distributed node are stored in one excitation power scheduling information for the identification and the calling of the distributed node, so as to generate new excitation power scheduling information.

For example, referring to fig. 4, fig. 4 is a service flow chart of an embodiment of a passive internet of things excitation power scheduling method of the present application, as shown in fig. 4, after the system starts to respond, the R node initializes the excitation power of the Q node, i.e. sets the Q node initialization excitation power P _init The R node re-activates the initialization tag inventory service, advanced Q node excitation power standardization is not needed before the inventory service starts, and when the Q node excitation power standardization is carried out, the Q node receives the excitation power set by the R nodeRate and label inventory instructions, P _init In order to excite power to transmit a tag activation signal, an R node receives tag reflection signals in excitation areas of all Q nodes, the R node groups passive RFID tags carrying different Q node information, and calculates average received signal intensity of N Q node tags, wherein a calculation formula is as follows:in formula 1, K represents Q _i The label number of node groups, x represents the label number of label rssi abnormally small values in the groups, and Q can be caused by removing the abnormally small value labels _i Node->The calculation is more accurate and reasonable, thereby improving Q _i The node excites the power normalization effect. User-defined reference received signal strength interval Rssi _ref ＝[a,b]dBm, R node judges whether the average received signal strength of each group of nodes is in a preset reference received signal strength interval, if so, the inventory service can be started directly with the current excitation power, if not, the self-adaptive grouping label Q node excitation power dispatching is executed, and R node judges Q _i Whether the average received signal strength of the node tag is higher than the upper limit threshold of the reference interval or not, if so, the R node reduces Q _i Exciting power and reducing power can adopt a step-type, linear-type and exponential-type function method; r node judges Q _i Whether the average received signal strength of the node tag is lower than the lower limit threshold of the reference interval or not, if yes, the R node increases Q _i The excitation power can be increased by adopting a step-type, linear-type and exponential-type function method, and the power increase is not higher than the highest excitation power. After the power standardization of the Q node is completed, the R node repeatedly transmits new excitation power scheduling, activates inventory service, and returns to execute the step of the power standardization of the Q node until the average received signal strength of the nodes of each group is within a preset reference received signal strength interval, and then the label inventory service is started. The R node generates a Q according to the current excitation power configuration _i And (5) excitation power scheduling information, and recording the excitation power configuration of the hanging Q node.

Therefore, the whole excitation power can be reduced under the condition of ensuring the efficiency of the labelling machine without arranging an additional hardware device, and the energy is saved under the condition of not influencing the running efficiency of the system.

Further, based on the first embodiment and the second embodiment of the passive internet of things excitation power scheduling method, a third embodiment of the passive internet of things excitation power scheduling method is provided.

In a third embodiment of the passive-internet-of-things excitation power scheduling method, in the step S40, after the step of scheduling, by the central node, the excitation power of each of the distributed nodes according to the excitation power scheduling information, the method further includes:

a10, transmitting an excitation power configuration instruction and the excitation power scheduling information to each distributed node through the central node;

in this embodiment, after the standardization of the excitation power of the Q node is completed and the inventory service begins, the R node first issues excitation power configuration instructions to each Q node, the Q node analyzes the excitation power configuration instructions, writes the own power configuration, continuously monitors R node control signaling, and begins or ends label activation in the inventory period.

Step A20, obtaining respective target excitation power of each distributed node in the excitation power scheduling information through each distributed node according to the excitation power configuration instruction;

In this embodiment, after the excitation power scheduling information is acquired by each Q node, the target excitation power corresponding to each of the excitation power scheduling information is read from the excitation power scheduling information.

Step A30, outputting a second excitation signal to each passive RFID tag corresponding to each distributed node through each distributed node according to each target excitation power;

in this embodiment, after acquiring the respective target excitation power, the Q node transmits an excitation signal to each passive RFID tag corresponding to the Q node at the target excitation power to activate each passive RFID tag.

Step a40 of receiving, by the central node, a second reflected signal reflected by each of the passive RFID tags in response to the second excitation signal;

and step A50, analyzing each second reflection signal through the central node to obtain the tag information of each passive RFID tag.

In this embodiment, after each passive RFID tag is activated by the excitation signal, the second reflection signal of the passive RFID tag is transmitted to the outside, and the R node receives the second reflection signal of each passive RFID tag in the service operation area and gathers the tag information obtained by analysis to the management platform, so as to facilitate the user to view and manage.

Further, in a possible embodiment, the passive thing excitation power scheduling system further includes: a management platform; after the step of analyzing, by the central node, the second reflection signals to obtain the tag information of the passive RFID tags in the step a50, the method further includes:

step B10, outputting the tag information to the management platform through the central node, and inputting the tag information to a preset data analysis template through the management platform to obtain a data analysis result and a visual report of the tag information;

it should be noted that, the preset data analysis template may be a template for summarizing, analyzing, counting and generating a visual chart according to the existing data, or may be a data analysis template set by the user, which is not limited herein.

In this embodiment, after obtaining each piece of tag information, the central node outputs each piece of tag information to the management platform, after collecting each piece of tag information to the management platform, the management platform inputs the collected tag information to a data analysis template preset by a user, so as to obtain a data analysis result and a visual report output by the data analysis template, wherein the visual report can include a statistical chart of each piece of data in the tag information, and contents such as a data statistical chart of each piece of tag.

And step B20, generating and outputting alarm information through the management platform when the data analysis result is not consistent with the preset normal data.

It should be noted that, the user may set normal data for determining whether the label data is normal according to experience, history data or parameters of each label and node, and the normal data may be a threshold or an interval, which is not limited herein.

In this embodiment, the management platform further includes an alarm function, and after the result of data analysis is obtained, if a certain data does not conform to the preset normal data, an alarm is given to the user, and the mode of outputting the alarm information may be displayed on the display device, or may be outputting the alarm information through the microphone device.

For example, when the power of a certain Q node is abnormal or a certain tag has no signal in the data analysis result, the condition that the tag is lost or the excitation power is too small may exist, and after the condition is detected, the management platform can immediately send out an alarm to remind a user to check and eliminate errors.

Therefore, by adopting the management platform to collect and manage the data of the receiving and transmitting separation reader-writer, the user can be helped to better understand and manage the running state of the system, and the working efficiency is improved.

Further, in a possible embodiment, the passive internet of things excitation power scheduling method further includes:

step C10, in the running process, the excitation power scheduling information is adaptively adjusted through the central node based on the current second reflection signal; and/or adjusting, by the central node, the excitation power scheduling information according to the acquired influence factors, wherein the influence factors include: environmental conditions, tag size, tag mobility, and job requirements.

In this embodiment, in the actual running process of the system, the R node monitors the average value of the signal intensities of the second reflected signals reflected by the tags in real time, and adopts each step of the Q node excitation power standardization to normalize the excitation power of each Q node in real time, and updates the excitation power scheduling information according to the normalized result. For example, if the reflected signal strength of a tag in a certain region is low, the excitation power of the corresponding Q node may need to be increased.

In addition, the system can also perform automatic excitation power adjustment in the running process, and the system can control the R node to set and automatically adjust the excitation power of the Q node according to the environmental conditions, the label scale, the label mobility and the working requirements set by the acquisition or users, for example, if the number of labels in the area covered by a certain Q node is large or the environmental noise is large, the excitation power may need to be increased to ensure that the labels can be successfully activated and read. When a new tag or tag movement occurs within the area covered by a certain Q node, a new excitation power configuration may need to be recalculated and issued. Optionally, the influencing factors may include other parameters that influence the excitation power and the reading efficiency, not limited thereto.

In addition, the R node needs to receive and process tag information reflected from the respective Q node areas. This may involve a series of signal processing operations such as signal reception, filtering, amplification, decoding, etc. More advanced hardware devices and signal processing algorithms may be considered to improve the performance and efficiency of the system.

Alternatively, in one possible embodiment, the R node may continuously monitor the operating state of each Q node and predict its future performance and lifetime based on historical data and machine learning algorithms. For example, if it is predicted that a certain Q node may fail in the near future, repair or replacement may be performed in advance.

The receiving-transmitting separation passive Internet of things product and the excitation power scheduling method in the passive Internet of things excitation power scheduling method are applicable to business scenes such as automatic inventory of group office assets, intelligent inventory of large-area logistics center assets, identification of entrance guard personnel and the like, and achieve fine management of personnel, assets and the like. The passive Internet of things excitation power scheduling method can improve the label checking efficiency and success rate of related service scenes.

Referring to fig. 5, fig. 5 is a diagram illustrating an implementation scenario of an embodiment of a passive internet of things excitation power scheduling method of the present application, where, as shown in fig. 5, in the above service scenario such as identification of an entrance guard, a receiving and transmitting separated passive internet of things product is characterized in that an R node may be accessed to a management platform such as an intelligent gateway, a server, etc. in a north direction, to provide Q node excitation power scheduling, tag reflection information receiving convergence, networking service capability, and Q node provides tag excitation and area coverage capability, so as to complete entrance guard identification, office asset automation inventory, and large area logistics center asset intelligent inventory.

In the business scene, the R node can adopt a dynamic excitation power scheduling scheme, and according to a certain time domain, the intensity of personnel and assets, the flow speed and the interference degree of the field environment, the Q node excitation power scheduling and adjustment are dynamically carried out, so that the excitation of labels in different areas of the field in an optimal working interval is met, the differential excitation capability of labels in different areas of the field is provided, and the overall label excitation and analysis efficiency of the system is improved.

The passive internet of things excitation power scheduling method is based on a receiving-transmitting separation reader-writer, and solves the problem that in the existing scheme, all Q nodes adopt uniform and fixed excitation power, the R node receives excessive or insufficient reflected signal power of passive tags in different Q node coverage areas to reduce analysis efficiency, and the tag counting capacity of the industrial field receiving-transmitting separation reader-writer is improved.

In addition, referring to fig. 6, fig. 6 is a schematic diagram of a functional module of a passive internet of things excitation power dispatching system of the present application, and the present application further provides a passive internet of things excitation power dispatching system, where the passive internet of things excitation power dispatching system includes: a transceiver separation reader-writer; the transceiver separation reader/writer includes: the system comprises a central node, a plurality of distributed nodes corresponding to the central node and a plurality of passive RFID tags corresponding to the distributed nodes respectively;

the instruction issuing module 10 is configured to issue a control instruction to each of the distributed nodes through the central node;

an excitation module 20, configured to transmit, by each of the distributed nodes, a first excitation signal to each of the passive RFID tags corresponding to each of the distributed nodes according to the control instruction;

a reflection module 30 for receiving, by the central node, a first reflected signal reflected by each of the passive RFID tags in response to the first excitation signal;

the scheduling module 40 is configured to generate, by using the central node, excitation power scheduling information of each of the distributed nodes according to the received signal strength of each of the first reflected signals, and schedule, by using the central node, excitation power of each of the distributed nodes according to the excitation power scheduling information.

Optionally, the excitation module is further configured to:

setting the respective initialization excitation power of each distributed node according to the preset excitation power through the central node; after detecting that each distributed node receives the control instruction, transmitting a first excitation signal to each passive RFID tag corresponding to each distributed node by each distributed node at an initialization excitation power.

Optionally, the scheduling module is further configured to:

respectively calculating the average received signal strength of the first reflected signals corresponding to each distributed node through the central node; and generating excitation power scheduling information of each distributed node according to each average received signal strength through the central node.

Optionally, the scheduling module is further configured to:

comparing each average received signal strength with a preset reference received signal strength interval through the central node; if the first target average received signal strength greater than the upper threshold of the reference received signal strength interval exists in each average received signal strength, reducing the excitation power of a first target distributed node corresponding to the first target average received signal strength according to a preset regulation rule through the central node; if the second target average received signal strength smaller than the lower threshold of the reference received signal strength interval exists in each average received signal strength, increasing the excitation power of a second target distributed node corresponding to the second target average received signal strength according to the adjustment rule through the central node; outputting a first excitation signal to each passive RFID tag corresponding to each distributed node by each distributed node according to each new excitation power of each distributed node, and returning to execute the step of receiving the first reflection signal reflected by each passive RFID tag in response to the first excitation signal by the central node until each average received intensity is within the reference received signal intensity interval, and storing the current excitation power of each distributed node into excitation power scheduling information by the central node according to a preset format to generate excitation power scheduling information.

Optionally, the passive internet of things excitation power scheduling system further comprises:

the service operation module is used for issuing an excitation power configuration instruction and the excitation power scheduling information to each distributed node through the central node; acquiring respective target excitation power of each distributed node in the excitation power scheduling information according to the excitation power configuration instruction through each distributed node; outputting a second excitation signal to each passive RFID tag corresponding to each distributed node through each distributed node according to each target excitation power; receiving, by the central node, a second reflected signal from each of the passive RFID tags in response to the second excitation signal; and analyzing each second reflection signal through the central node to obtain tag information of each passive RFID tag, and outputting each tag information to the management platform.

the self-adaptive adjustment module is used for self-adaptively adjusting the excitation power scheduling information based on the current second reflection signal through the central node in the running process; and/or adjusting, by the central node, the excitation power scheduling information according to the acquired influence factors, wherein the influence factors include: environmental conditions, tag size, tag mobility, and job requirements.

the management module is used for inputting each piece of label information into a preset data analysis template to obtain a data analysis result and a visual report of each piece of label information; and when the data analysis result is inconsistent with the preset normal data, generating and outputting alarm information through the management platform.

The specific implementation manner of the passive internet of things excitation power dispatching system is basically the same as that of each embodiment of the passive internet of things excitation power dispatching method, and is not repeated here.

In addition, the application also provides a storage medium which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program realizes the steps of the passive internet of things excitation power scheduling method.

The specific embodiments of the storage medium in the present application are substantially the same as the embodiments of the passive-internet-of-things excitation power scheduling method described above, and are not described herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.

Claims

1. The passive internet of things excitation power scheduling method is characterized by being applied to a passive internet of things excitation power scheduling system, and the passive internet of things excitation power scheduling system comprises: a transceiver separation reader-writer; the transceiver separation reader/writer includes: the system comprises a central node, a plurality of distributed nodes corresponding to the central node and a plurality of passive RFID tags corresponding to the distributed nodes respectively;

2. The method of claim 1, wherein the step of transmitting, by each of the distributed nodes, the first excitation signal to each of the passive RFID tags corresponding to each of the distributed nodes according to the control command, comprises:

3. The method of claim 1, wherein the step of generating, by the central node, excitation power scheduling information for each of the distributed nodes based on the received signal strength of each of the first reflected signals, comprises:

calculating the average received signal strength of each first reflected signal corresponding to each distributed node through the central node;

4. A passive internet of things excitation power scheduling method according to claim 3, wherein the step of generating, by the central node, excitation power scheduling information for each of the distributed nodes from each of the average received signal strengths comprises:

5. The passive internet of things excitation power scheduling method of claim 1, wherein after the step of scheduling excitation power of each of the distributed nodes by the central node according to the excitation power scheduling information, the method further comprises:

outputting a second excitation signal to each passive RFID tag corresponding to each distributed node by each distributed node at a target excitation power corresponding to each distributed node;

6. The passive-internet of things excitation power scheduling method of claim 5, further comprising:

and/or that the number of the groups of groups,

7. The passive internet of things excitation power dispatching method of claim 5, wherein the passive internet of things excitation power dispatching system further comprises: a management platform;

8. The passive thing allies oneself with excitation power dispatch system, characterized in that, passive thing allies oneself with excitation power dispatch system includes: a transceiver separation reader-writer; the transceiver separation reader/writer includes: the system comprises a central node, a plurality of distributed nodes corresponding to the central node and a plurality of passive RFID tags corresponding to the distributed nodes respectively;

9. The passive thing allies oneself with excitation power scheduling equipment, characterized in that, passive thing allies oneself with excitation power scheduling equipment includes: a memory, a processor, wherein the memory has stored thereon a computer program which, when executed by the processor, implements the steps of the passive internet of things excitation power scheduling method of any of claims 1 to 7.

10. A storage medium, characterized in that the storage medium is a computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the steps of the passive internet of things excitation power scheduling method according to any one of claims 1 to 7.