CN111885505B - Positioning detection method of electronic price tag - Google Patents
Positioning detection method of electronic price tag Download PDFInfo
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- CN111885505B CN111885505B CN202011042719.3A CN202011042719A CN111885505B CN 111885505 B CN111885505 B CN 111885505B CN 202011042719 A CN202011042719 A CN 202011042719A CN 111885505 B CN111885505 B CN 111885505B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/35—Services specially adapted for particular environments, situations or purposes for the management of goods or merchandise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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Abstract
The invention provides a positioning detection method of an electronic price tag, which is applied to a server terminal of an electronic price tag system, wherein the electronic price tag system comprises a positioning anchor point with a fixed position and an electronic price tag with a movable position, and the method comprises the following steps: acquiring neighbor information of the positioning anchor point and the electronic price tag in a current detection time window; acquiring a current neighbor weight value table of the electronic price tag according to the neighbor information; comparing the current neighbor weight table with a preset neighbor weight table, and judging whether the electronic price tag has position movement; and when the position of the electronic price tag moves, carrying out position positioning on the electronic price tag. According to the invention, the position of the electronic price tag is subjected to movement detection, and the electronic price tag at the moving position is subjected to targeted relocation, so that the positioning accuracy is improved, and the positioning time is shortened; the invention can also find the position change of the electronic price tag in time, and meets the requirement of the user on the positioning timeliness of the electronic price tag system.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a positioning detection method of an electronic price tag.
Background
The position of the electronic price tag in the business-super environment is important for the efficiency of commodity management and business-super business realization. The electronic price tags are likely to move in position in a business overload environment, after the current electronic price tags move in position, the change of the positions of some electronic price tags can be found only by repositioning all the electronic price tags, and the number of the price tags which move in position in actual business overload is very limited.
Disclosure of Invention
Aiming at the defects in the prior art, the positioning detection method of the electronic price tag solves the problems of positioning error, long positioning time and high power consumption in the positioning of the position of the electronic price tag in the prior art, and the electronic price tag with the changed position is repositioned in a targeted manner, so that the positioning precision is improved, the positioning time is shortened, and the power consumption of an electronic price tag system is reduced.
The invention provides a positioning detection method of an electronic price tag, which is applied to a server terminal of an electronic price tag system, wherein the electronic price tag system comprises a positioning anchor point with a fixed position and an electronic price tag with a movable position, and the method comprises the following steps: acquiring neighbor information of the positioning anchor point and the electronic price tag in a current detection time window; acquiring a current neighbor weight value table of the electronic price tag according to the neighbor information; comparing the current neighbor weight table with a preset neighbor weight table, and judging whether the electronic price tag has position movement; and when the position of the electronic price tag moves, carrying out position positioning on the electronic price tag.
Optionally, the acquiring, within the current detection time window, neighbor information of the positioning anchor point and the electronic price tag includes: sending triggering information to the positioning anchor point and the electronic price tag, so that the positioning anchor point and the electronic price tag send own identity information for multiple times in the current detection time window, and receive identity information sent by other positioning anchor points and other electronic price tags; and receiving the positioning anchor point and the electronic price tag and sending corresponding neighbor information, wherein the neighbor information comprises the identity information, the receiving power and the receiving times of the received positioning anchor point and the electronic price tag.
Optionally, obtaining a current neighbor weight table of the electronic price tag according to the neighbor information includes: acquiring a first receiving frequency of the electronic price tag for receiving the identity information sent by the target price tag according to the identity information of the electronic price tag and the neighbor information; acquiring second receiving times of the target price tag for receiving the electronic price tag and sending the identity information according to the identity information of the target price tag and the neighbor information of the target price tag; adding the first receiving times and the second receiving times to obtain a weight of the target price tag; sorting the weights in a descending order to obtain a serial number value of the target price tag; and acquiring a current neighbor weight value table of the electronic price tag according to the identity information of the target price tag, the weight value of the target price tag and the serial number value of the target price tag.
Optionally, comparing the current neighbor weight table with a preset neighbor weight table, and determining whether the electronic price tag has a position movement, including: acquiring a first comparison price tag table with the sequence number value smaller than or equal to a first preset value from the current neighbor weight value table; acquiring a second comparison price tag table with the serial number value smaller than or equal to a second preset value from the preset neighbor weight value table; acquiring a first number of the same price tags in the first price tag table and the second price tag table according to the first price tag table and the second price tag table; judging whether the first number is smaller than a first threshold value; determining that the electronic price tag has a location movement when the first number is less than the first threshold value.
Optionally, when the first number is greater than or equal to the first threshold value, the method further includes: acquiring a first positioning anchor point table with the sequence number value smaller than or equal to a third preset value according to the current neighbor weight value table; acquiring a second positioning anchor point table with the sequence number value smaller than or equal to a fourth preset value according to the preset neighbor weight value table, wherein the first positioning anchor point table and the second positioning anchor point table have only positioning anchor points; acquiring a second number of the same positioning anchors in the first positioning anchor table and the second positioning anchor table according to the first positioning anchor table and the second positioning anchor table; judging whether the second number is smaller than a second threshold value; determining that the electronic price tag has a positional movement when the second number is less than the second threshold value.
Optionally, the method further comprises: determining that there is no positional movement of the electronic price tag when the first number is greater than or equal to the first threshold value and when the second number is greater than or equal to the second threshold value.
Optionally, before acquiring the neighbor information of the positioning anchor point and the electronic price tag within the current detection time window, the method further includes: acquiring a plurality of neighbor weight value tables of the electronic price tags in a plurality of preset detection time windows; and combining the plurality of neighbor weight value tables of the electronic price tag to obtain a preset neighbor weight value table of the electronic price tag.
Optionally, when the first number is smaller than the first threshold value, after determining that there is a position movement for the electronic price tag, the method further includes: and taking the current neighbor weight value table as a preset neighbor weight value table after the electronic price tag is updated.
Optionally, after determining that there is no position movement for the electronic price tag when the first number is greater than or equal to the first threshold value and when the second number is greater than or equal to the second threshold value, the method further comprises: and merging the current neighbor weight table and the preset neighbor weight table to serve as the updated preset neighbor weight table of the electronic price tag.
Optionally, when there is a position movement on the electronic price tag, performing position location on the electronic price tag includes: acquiring a positioning anchor point closest to the electronic price tag according to the weight of the current neighbor weight value table; acquiring a plurality of target electronic price tags adjacent to the electronic price tags according to the strength information of the received power in the neighbor information; establishing a plane coordinate system by taking the position of the positioning anchor point as an origin; converting the position relation of the target electronic price tags and the positioning anchor points in a preset map into the plane coordinate system; according to the position coordinates of the multiple target price tags in the plane coordinate system, first position information of the electronic price tags in the plane coordinate system is obtained; and acquiring second position information of the electronic price tag in the preset map according to the first position information.
The technical principle of the invention is as follows:
the method for positioning and detecting the electronic price tags comprises the steps of sending trigger information to positioning anchor points and the electronic price tags at regular time, enabling the electronic price tags to send own identity information in a detection time window and receive identity information from other positioning anchor points or the electronic price tags to obtain neighbor relation information of the electronic price tags, calculating to obtain a current neighbor weight table of each electronic price tag by a server according to the neighbor relation information, comparing the current neighbor weight table with a preset neighbor weight table of the electronic price tags, obtaining whether the electronic price tags have position movement according to a movement judgment algorithm, repositioning the positions of the electronic price tags when judging that the electronic price tags have the position movement, and not processing the positions of the electronic price tags when judging that the positions of the electronic price tags do not have the movement.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, whether the position of the electronic price tag moves is detected, and then the electronic price tag at the moving position is repositioned in a targeted manner, so that all electronic price tags in the quotient exceeds are not required to be repositioned, the positioning precision is improved, and the positioning time is shortened; the invention can also find the position change of the electronic price tag in time and update the position change in time, thereby meeting the requirement of the user on the positioning timeliness of the electronic price tag system.
Drawings
Fig. 1 is a schematic flow chart illustrating a method for positioning and detecting an electronic price tag according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electronic price tag system according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating the step S102 in FIG. 1 according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a neighbor relation in an electronic price tag system according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating the step S103 in FIG. 1 according to an embodiment of the present invention;
fig. 6 is a schematic flowchart illustrating a specific process of step S104 in fig. 1 according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic flow chart of a positioning detection method for an electronic price tag according to an embodiment of the present invention, and as shown in fig. 1, the positioning detection method is applied to a server side of an electronic price tag system, where the electronic price tag system includes a fixed-position positioning anchor point and a movable-position electronic price tag, and the positioning detection method for the electronic price tag specifically includes the following steps:
and S101, acquiring the neighbor information of the positioning anchor point and the electronic price tag in the current detection time window.
Further, in the current detection time window, acquiring the neighbor information of the positioning anchor point and the electronic price tag specifically includes: sending triggering information to the positioning anchor point and the electronic price tag, so that the positioning anchor point and the electronic price tag send own identity information for multiple times in the current detection time window, and receive identity information sent by other positioning anchor points and other electronic price tags; and receiving the positioning anchor point and the electronic price tag and sending corresponding neighbor information, wherein the neighbor information comprises the identity information, the receiving power and the receiving times of the received positioning anchor point and the electronic price tag.
It should be noted that, the electronic price tag system in this embodiment includes a server, a base station, a positioning anchor point and a movable electronic price tag, as shown in fig. 2, the server sends trigger information or control instructions to the positioning anchor point and the electronic price tag through the base station, and the positioning anchor point and the electronic price tag send neighbor relation information to the server through the base station, in this embodiment, the fixedly set positioning anchor point is referred to as an a-type price tag, and the movably set electronic price tag is referred to as a B-type price tag, where the a-type price tag is mainly used to locate the position of the B-type price tag, and an a-type price tag may be set in a shelf or a certain range, and the B-type price tag is mainly used to display the name and price of a product, and is also used to track and locate the position of the product, so that a product corresponds to a B-type price tag, and after the product moves, the electronic price tag bound to the product moves, the location of the electronic price tag is therefore actually the location of the item.
In this embodiment, the server controls the price tag to enter a detection mode through the base station, and configures a corresponding detection time window, the class a and class B price tags transmit their own identity information in a time-slotted staggered manner according to the control information, and the time slots of the price tag outside the transmitted identity information in the detection time window are all used for receiving the identity information transmitted by other positioning anchors and other electronic price tags, and recording the received neighbor information, which includes the price tag ID, the receiving power, and the receiving times. And after the detection time window is finished, the A-type price tags and the B-type price tags report the neighbor information to a server through the base station.
The detection time window can be set according to the actual requirements of the customer, and can be set at the time when the customer arranges the commercial and super goods, such as the time when the customer goes off duty at night, the time when the customer goes on duty at morning or at noon, so that the position change of the price tag can be found in time; the set time of the detection time window is about 20s generally, and the normal work of the electronic price tag system cannot be influenced due to short time.
And step S102, acquiring the current neighbor weight value table of the electronic price tag according to the neighbor information.
In the embodiment of the present invention, as shown in fig. 3, the obtaining of the current neighbor weight table of the electronic price tag according to the neighbor information specifically includes the following steps:
step S201, acquiring a first receiving frequency of the electronic price tag for receiving the identity information sent by a target price tag according to the identity information of the electronic price tag and the neighbor information;
step S202, acquiring a second receiving frequency of the target price tag for receiving the electronic price tag and sending the identity information according to the identity information of the target price tag and the neighbor information of the target price tag;
step S203, adding the first receiving times and the second receiving times to obtain a weight of the target price tag;
step S204, sorting the weights in a descending order to obtain a serial number value of the target price tag;
step S205, acquiring a current neighbor weight value table of the electronic price tag according to the identity information of the target price tag, the weight value of the target price tag and the serial number value of the target price tag.
Specifically, the target price tag comprises the positioning anchor point and the electronic price tag; the server calculates the bidirectional neighbor weight of each B-type price tag according to neighbor information (price tag ID, receiving power and receiving times) reported by the A-type and B-type price tags, and keeps the ID and weight of the first M (for example, M = 30) price tags with the largest weight as a neighbor weight table of the price tag. Fig. 4 is a schematic diagram of a neighbor relation in the electronic price tag system of this embodiment, as shown in fig. 4, taking price tag B-1 as an example, a neighbor that can be received is price tag a-1, where the calculation of the weight may be selected from any one of the following two algorithms: 1. the price tag A-1 receiving times received by the price tag B-1 plus the price tag B-1 receiving times received by the price tag A-1; 2. the price tag A-1 received power at price tag B-1 + the price tag B-1 received power at price tag A-1.
Assuming that all neighbors of the price tag B-1 are the price tag A-1, the price tag A-2, the price tag B-2 and the price tag B-3, and the current neighbor weight value table of the price tag B-1 is as follows:
| price tag ID | Weight value | Ranking |
| Price tag A-1 | Weight A-1 | 1 |
| Price tag A-2 | Weight A-2 | 2 |
| Price tag B-2 | Weight B-2 | 3 |
| Price tag B-3 | Weight B-3 | 4 |
And S103, comparing the current neighbor weight table with a preset neighbor weight table, and judging whether the electronic price tag has position movement.
In this embodiment, a specific implementation process of step S103 is shown in fig. 5, and specifically includes the following steps:
step S301, acquiring a first comparison price tag table with the serial number value smaller than or equal to a first preset value from the current neighbor weight value table;
step S302, a second comparison price tag table with the serial number value smaller than or equal to a second preset value is obtained from the preset neighbor weight value table;
step S303, acquiring a first number of the same price tags in the first price tag and the second price tag according to the first price tag and the second price tag;
step S304, determining whether the first number is smaller than a first threshold, executing step S305 when the first number is smaller than the first threshold, and executing step S306 when the first number is greater than or equal to the first threshold;
step S305, determining that the electronic price tag has position movement;
step S306, according to the current neighbor weight value table, acquiring a first positioning anchor point table with a sequence number value smaller than or equal to a third preset value, and according to the preset neighbor weight value table, acquiring a second positioning anchor point table with a sequence number value smaller than or equal to a fourth preset value;
step S307, acquiring a second number of the same positioning anchors in the first positioning anchor table and the second positioning anchor table according to the first positioning anchor table and the second positioning anchor table;
step S308, determining whether the second number is smaller than a second threshold, executing step S305 when the second number is smaller than the second threshold, and executing step S309 when the second number is greater than or equal to the second threshold;
step S309, determining that there is no position movement of the electronic price tag.
Specifically, assuming that the first preset value is 8, the first comparison price tag table includes a price tag 8 before the weight in the current neighbor weight table, the target price tag includes the above-mentioned a-type price tag and B-type price tag, and similarly, the second preset value is 10, the second comparison price tag table includes a price tag 10 before the weight in the preset neighbor weight table, the number of the price tag in the first comparison price tag table appearing in the second comparison price tag table is taken as the first number, the first number is compared with the preset first threshold value, assuming that the first threshold value is set to be 4, if the same number of the price tags in the first comparison price tag table and the second comparison price tag table is 2, it is considered that the position of the B-type price tag corresponding to the current neighbor weight table has movement.
If the price tag in the last step is not judged to be moving, the next judgment is needed, and the specific judgment process is as follows: extracting all A-class price tags in the current neighbor weight value table, sorting according to the descending order of the weight values, forming a first positioning anchor point table by using the price tags with the sequence numbers smaller than a third preset value, assuming that the third preset value is 4, the first positioning anchor point table comprises 4A-class price tags, and similarly, assuming that the fourth preset value is 5, 5A-class price tags extracted from a preset neighbor weight value table are included in a second positioning anchor point table, obtaining the number of the same A-class price tags in the first positioning anchor point table and the second positioning anchor point table, taking the number as a second number, comparing the second number with a preset second limit value, and in the same comparison principle, no redundancy is provided here, when the second number is smaller than the second limit value, considering that the electronic price tags have position movement, when the second number is larger than or equal to the second limit value, the electronic price tag is deemed to have no positional movement.
It should be noted that, in the electronic price tag system of this embodiment, each class B price tag has corresponding neighbor relation information, a corresponding current neighbor weight table, and a corresponding preset neighbor weight table, so that the server needs to perform position movement judgment on the corresponding class B price tag according to the current neighbor weight table of each class B price tag; in this embodiment, the judgment basis is according to the number of the same price tags in the first comparison price tag and the second comparison price tag, or according to the percentage of the target price tag in the first comparison price tag appearing in the second comparison price tag, the judgment principle is the same, and details are not described here.
And step S104, when the position of the electronic price tag moves, positioning the electronic price tag.
Specifically, in the embodiment, the B-class price tags with moving positions are positioned, and the non-moving B-class price tags are not processed, so that the original positions are kept, accurate positioning is realized, and power consumption of the server is reduced.
Compared with the prior art, the invention has the following beneficial effects:
the method for positioning and detecting the electronic price tags ensures that the electronic price tags send own identity information in a detection time window and receive identity information from other positioning anchors or the electronic price tags by regularly sending trigger information to the positioning anchors and the electronic price tags to obtain neighbor relation information of the electronic price tags, a server calculates and obtains a current neighbor weight table of each electronic price tag according to the neighbor relation information and compares the current neighbor weight table with a preset neighbor weight table of the electronic price tags, obtaining whether the electronic price tag has position movement according to a movement judgment algorithm, repositioning the position of the electronic price tag when the electronic price tag is judged to have the position movement, and when judging that the position of the electronic price tag does not move, not processing the position of the electronic price tag and keeping the original position. According to the invention, whether the position of the electronic price tag moves is detected, and then the electronic price tag at the moving position is repositioned in a targeted manner, so that all electronic price tags in the quotient exceeds are not required to be repositioned, the positioning precision is improved, and the positioning time is shortened; the invention can also find the position change of the electronic price tag in time and update the position in time, thereby meeting the requirement of the user on the positioning timeliness of the electronic price tag system.
In another embodiment of the present invention, before the acquiring the neighbor information of the positioning anchor point and the electronic price tag within the current detection time window, the method further includes: acquiring a plurality of neighbor weight value tables of the electronic price tags in a plurality of preset detection time windows; and combining the plurality of neighbor weight value tables of the electronic price tag to obtain a preset neighbor weight value table of the electronic price tag.
It should be noted that, in this embodiment, the price label is only performed once after the initial installation, and after the initial installation of the quotient over price label, the control center controls the price label to perform N (e.g., N = 3) times of neighbor detection, merges neighbor weight tables obtained by the N times of neighbor detection, and reserves the top M (e.g., M = 30) with the largest weight as the neighbor weight table of the price label. The merging is calculated according to the weight accumulation, for example: assuming that N =2, all neighbors obtained by the price tag B-1 for the second time are the price tag A-1, the price tag A-2, the price tag B-2 and the price tag B-4, and the following table is a preset neighbor weight table after the price tag B-1 is combined.
| Price tag ID | Weight value | Ranking |
| Price tag A-1 | The sum of the two obtained weights A-1 | 1 |
| Price tag A-2 | The sum of the two obtained weights A-2 | 2 |
| Price tag B-2 | The sum of the two obtained weights B-2 | 3 |
| Price tag B-3 | The weight B-3 obtained for the first time | 4 |
| Price tag B-4 | The weight B-4 obtained for the second time | 5 |
In another embodiment of the present invention, after determining that there is a position shift in the electronic price tag when the first number is less than the first threshold value, the method further comprises: and taking the current neighbor weight value table as a preset neighbor weight value table after the electronic price tag is updated.
In another embodiment of the present invention, after determining that there is no position movement for the electronic price tag when the first number is greater than or equal to the first threshold value and when the second number is greater than or equal to the second threshold value, the method further comprises: and merging the current neighbor weight table and the preset neighbor weight table to serve as the updated preset neighbor weight table of the electronic price tag.
It should be noted that, after the position movement determination of the class B price tag is performed in each detection time window, when the position of the class B price tag is determined to be moving, the current neighbor weight table acquired in the current detection time window is used as the preset neighbor weight table of the next detection time window in place of the current preset neighbor weight table; and when the position of the B-type price tag is judged to be not moved, combining the current neighbor weight value table acquired in the current detection time window with the current preset neighbor weight value table, and taking the combined neighbor weight value table as the preset neighbor weight value table of the next detection time window.
Fig. 6 is a schematic specific flowchart illustrating the step S104 in fig. 1 according to an embodiment of the present invention, in which the positioning the electronic price tag includes the following steps:
step S401, according to the weight of the current neighbor weight value table, obtaining a positioning anchor point closest to the electronic price tag;
step S402, according to the intensity information of the received power in the neighbor information, a plurality of target electronic price tags adjacent to the electronic price tags are obtained;
step S403, establishing a plane coordinate system by taking the position of the positioning anchor point as an origin;
step S404, converting the position relation of the target electronic price tags and the positioning anchor points in a preset map into the plane coordinate system;
step S405, acquiring first position information of the electronic price tags in the plane coordinate system according to the position coordinates of the plurality of target price tags in the plane coordinate system;
step S406, according to the first position information, second position information of the electronic price tag in the preset map is obtained.
Specifically, in this embodiment, four B-class price tags adjacent to each other before, after, left, and right of the B-class price tag of the mobile position and the nearest a-class price tag are obtained through the strength information of the received power in the current neighbor weight table, a plane coordinate system is established with the a-class price tag as an origin, the position of the unknown B-class price tag can be calculated according to the known positions of 4B-class price tags and the a-class price tag, and then the position of the B-class price tag in the plane coordinate system is converted into a preset map of a business surpass, so as to obtain the position information of the B-class price tag in the preset map, and realize the positioning of the B-class price tag.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A positioning detection method of an electronic price tag is applied to a server side of an electronic price tag system, the electronic price tag system comprises a positioning anchor point with a fixed position and an electronic price tag with a movable position, and the method comprises the following steps:
acquiring neighbor information of the positioning anchor point and the electronic price tag in a current detection time window;
acquiring a current neighbor weight value table of the electronic price tag according to the neighbor information;
comparing the current neighbor weight table with a preset neighbor weight table, and judging whether the electronic price tag has position movement;
when the position of the electronic price tag moves, carrying out position positioning on the electronic price tag;
wherein, in the current detection time window, acquiring the neighbor information of the positioning anchor point and the electronic price tag comprises:
sending triggering information to the positioning anchor point and the electronic price tag, so that the positioning anchor point and the electronic price tag send own identity information for multiple times in the current detection time window, and receive identity information sent by other positioning anchor points and other electronic price tags;
receiving the positioning anchor point and the electronic price tag and sending corresponding neighbor information, wherein the neighbor information comprises the identity information, the receiving power and the receiving times of the received positioning anchor point and the electronic price tag;
wherein, according to the neighbor information, obtaining the current neighbor weight table of the electronic price tag comprises:
acquiring a first receiving frequency of the electronic price tag for receiving the identity information sent by the target price tag according to the identity information of the electronic price tag and the neighbor information;
acquiring second receiving times of the target price tag for receiving the electronic price tag and sending the identity information according to the identity information of the target price tag and the neighbor information of the target price tag;
adding the first receiving times and the second receiving times to obtain a weight of the target price tag;
sorting the weights in a descending order to obtain a serial number value of the target price tag;
and acquiring a current neighbor weight value table of the electronic price tag according to the identity information of the target price tag, the weight value of the target price tag and the serial number value of the target price tag.
2. The method of claim 1, wherein comparing the current neighbor weight table with a preset neighbor weight table to determine whether the electronic price tag has a position shift comprises:
acquiring a first comparison price tag table with the sequence number value smaller than or equal to a first preset value from the current neighbor weight value table;
acquiring a second comparison price tag table with the serial number value smaller than or equal to a second preset value from the preset neighbor weight value table;
acquiring a first number of the same price tags in the first comparison price tag and the second comparison price tag according to the first comparison price tag and the second comparison price tag;
judging whether the first number is smaller than a first threshold value;
determining that the electronic price tag has a location movement when the first number is less than the first threshold value.
3. The method for location detection of an electronic price tag of claim 2, wherein when said first number is greater than or equal to said first threshold value, said method further comprises:
acquiring a first positioning anchor point table with the sequence number value smaller than or equal to a third preset value according to the current neighbor weight value table;
acquiring a second positioning anchor point table with the sequence number value smaller than or equal to a fourth preset value according to the preset neighbor weight value table;
acquiring a second number of the same positioning anchors in the first positioning anchor table and the second positioning anchor table according to the first positioning anchor table and the second positioning anchor table;
judging whether the second number is smaller than a second threshold value;
determining that the electronic price tag has a positional movement when the second number is less than the second threshold value;
wherein there is and only the positioning anchor in the first and second positioning anchor tables.
4. The method for location detection of an electronic price tag of claim 3, further comprising:
determining that there is no positional movement of the electronic price tag when the first number is greater than or equal to the first threshold value and when the second number is greater than or equal to the second threshold value.
5. The method for location detection of an electronic price tag of claim 1, wherein before the acquiring the neighbor information of the electronic price tag and the location anchor within the current detection time window, the method further comprises:
acquiring a plurality of neighbor weight value tables of the electronic price tags in a plurality of preset detection time windows;
and combining the plurality of neighbor weight value tables of the electronic price tag to obtain a preset neighbor weight value table of the electronic price tag.
6. The method of claim 3, wherein when the first number is less than the first threshold value, after determining that the electronic price tag has a position movement, the method further comprises:
and taking the current neighbor weight value table as a preset neighbor weight value table after the electronic price tag is updated.
7. The method of claim 4, wherein after determining that there is no positional movement for the electronic price tag when the first number is greater than or equal to the first threshold value and when the second number is greater than or equal to the second threshold value, the method further comprises:
and merging the current neighbor weight table and the preset neighbor weight table to serve as the updated preset neighbor weight table of the electronic price tag.
8. The method of claim 1, wherein locating the electronic price tag when there is a positional movement of the electronic price tag comprises:
acquiring a positioning anchor point closest to the electronic price tag according to the weight of the current neighbor weight value table;
acquiring a plurality of target electronic price tags adjacent to the electronic price tags according to the strength information of the received power in the neighbor information;
establishing a plane coordinate system by taking the position of the positioning anchor point as an origin;
converting the position relation of the target electronic price tags and the positioning anchor points in a preset map into the plane coordinate system;
according to the position coordinates of the target electronic price tags in the plane coordinate system, first position information of the electronic price tags in the plane coordinate system is obtained;
and acquiring second position information of the electronic price tag in the preset map according to the first position information.
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