WO2021163983A1

WO2021163983A1 - Electronic price tag positioning apparatus, system and method, and computer readable storage medium

Info

Publication number: WO2021163983A1
Application number: PCT/CN2020/076107
Authority: WO
Inventors: 侯世国; 赵建国; 张东浩; 梁敏
Original assignee: 汉朔科技股份有限公司
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2021-08-26

Abstract

An electronic price tag positioning apparatus, system and method, and a computer readable storage medium. The apparatus comprises: a fixing device (102) on which multiple contact positions are provided, an electronic price tag being fixed at each contact position, and the electronic price tag fixed at each contact position communicating with a controller (104) by means of a communication cable; a resistor band (1021) in the fixing device (102), the resistor band (1021) comprising multiple resistors having equal values and connected in series, each resistor corresponding to a relative position on the fixing device (102), the resistors and the contact positions corresponding to each other having the same positions on the fixing device (102), the electronic price tag fixed at each contact position being connected to the resistor corresponding to the contact position, and a voltage value of the resistor corresponding to the contact position being obtained; and the controller (104) receiving, by means of the communication cable, information sent by the electronic price tag fixed at each contact position, determining, according to the voltage value in the information, the resistor to which the voltage value belongs, and positioning, according to the determined relative position corresponding to the resistor, the electronic price tag sending the information.

Description

Positioning device, system, method and computer readable storage medium of electronic price tag

Technical field

The present invention relates to the technical field of indoor positioning, in particular to an electronic price tag positioning device, system, method and computer readable storage medium.

Background technique

Traditional indoor positioning methods include WiFi (i.e. mobile hotspot), BLE (Bluetooth Low Energy), UWB (Ultra Wideband, which is a non-carrier communication technology), RFID (Radio Frequency Identification, radio frequency identification), Infrared indoor positioning technology, etc.

Among them, Bluetooth indoor positioning technology locates by measuring signal strength. This is a short-distance low-power wireless transmission technology. Install appropriate Bluetooth LAN access points indoors, configure the network to be a multi-user-based basic network connection mode, and ensure that the Bluetooth LAN access point is always this piconet (piconet) master device, you can get the user's location information. Bluetooth indoor positioning technology is mainly used in small-scale positioning, such as single-story halls or warehouses.

The biggest advantage of Bluetooth indoor positioning technology is that the device is small in size and easy to integrate in PDAs, PCs and mobile phones, so it is easy to popularize. Theoretically, for a user who has a mobile terminal device with integrated Bluetooth function, as long as the device's Bluetooth function is turned on, the Bluetooth indoor positioning system can judge its location. When this technology is used for indoor short-distance positioning, it is easy to find the equipment and the signal transmission is not affected by the line-of-sight.

The disadvantage is that the price of Bluetooth devices and equipment is relatively expensive, and for the complex space environment, the stability of the Bluetooth system is slightly worse, and it is greatly interfered by noise signals.

The positioning accuracy of WiFi and BLE positioning schemes is low, generally 8-15m, and the coverage is 75-150m. The positioning accuracy of UWB and RFID is less than 10CM, the coverage of RFID is 1-5 meters, and the coverage of UWB is 150 meters. WiFi, BLE, UWB, and RFID are all implemented based on radio waves, and the characteristics of radio waves themselves are high environmental requirements, complex construction, and poor stability, making these positioning solutions have high costs and low positioning accuracy Defects.

In addition, the principle of infrared indoor positioning technology positioning is that infrared IR marks emit modulated infrared rays, which are received by optical sensors installed indoors for positioning.

Although infrared rays have relatively high indoor positioning accuracy, because light cannot pass through obstacles, infrared rays can only travel through the line of sight. The two major shortcomings of straight line of sight and short transmission distance make the indoor positioning effect very poor. When the logo is placed in a pocket or there is a wall or other shielding, it will not work properly. It is necessary to install a receiving antenna in each room and corridor, which is expensive. Therefore, infrared rays are only suitable for short-distance transmission, and are easily interfered by fluorescent lights or lights in the room, and have limitations in precise positioning.

Summary of the invention

The embodiment of the present invention provides a positioning device for an electronic price tag to solve the technical problem of high cost or low accuracy in indoor positioning in the prior art. The device includes:

A fixing device for fixing an electronic price tag, wherein a plurality of contact positions are provided on the fixing device, the electronic price tag is fixed at each contact position, and the electronic price tag fixed at each contact position passes The communication cable communicates with the controller;

The resistance band is arranged in the fixing device, the resistance band includes a plurality of resistors of equal value and connected in series, and each resistance corresponds to a relative position on the fixing device, and the resistance corresponds to the contact position one by one , The resistance corresponding to each other is the same as the position of the contact position on the fixing device, the electronic price tag fixed at each contact position is connected to the resistance corresponding to the contact position, and the resistance corresponding to the contact position is obtained The voltage value;

The controller receives the information sent by the electronic price tag fixed at each contact position through the communication cable, determines the resistance to which the voltage value belongs according to the voltage value in the information, and according to the determined resistance The relative position corresponding to the resistance locates the electronic price tag that sends the information.

The embodiment of the present invention also provides an electronic price tag positioning system to solve the technical problem of high cost or low accuracy in indoor positioning in the prior art. The system includes:

A server and any of the above-mentioned positioning devices for electronic price tags, wherein:

The controller reports the location information of each electronic price tag fixed on the fixing device to the server.

The embodiment of the present invention also provides a positioning method of an electronic price tag to solve the technical problem of high cost or low accuracy in indoor positioning in the prior art. The method includes:

Record the one-to-one correspondence between the resistance on the resistance band and the contact position on the fixing device, and record the relative position of each resistance on the resistance band on the fixing device, wherein the fixing device is provided with more An electronic price tag is fixed at each contact position, and the electronic price tag fixed at each contact position communicates with the controller through a communication cable, and the resistance band includes a plurality of equal value and connected in series The resistance corresponding to each other is the same as the position of the contact position on the fixing device, the electronic price tag fixed at each contact position is connected to the resistance corresponding to the contact position, and the corresponding contact position is obtained The voltage value of the resistance;

The controller uses the communication cable to receive the information sent by the electronic price tag fixed at each contact position, determine the resistor to which the voltage value belongs based on the voltage value in the information, and determine the value of the resistor based on the determined value. The corresponding relative position locates the electronic price tag that sends the information.

The embodiment of the present invention also provides a computer-readable storage medium that stores a computer program that executes any of the above-mentioned electronic price tag positioning methods, so as to solve the high cost or high cost of indoor positioning in the prior art. Technical problems with low accuracy.

In the embodiment of the present invention, it is proposed to set a plurality of contact positions on the fixing device to fix the electronic price tag, and set a resistance band. The resistance band includes a plurality of resistors of equal value and connected in series. The relative position on the fixing device, the resistance corresponds to the contact position one-to-one, the corresponding resistance and the contact position are the same as the position on the fixing device, and the fixed electronic price tag at each contact position corresponds to the contact position Corresponding resistance connection, obtain the voltage value of the resistance corresponding to the contact position, the electronic price tag fixed at each contact position communicates with the controller through the communication cable, and the controller receives the electronic price tag fixed at each contact position to send According to the voltage value in the received information, the resistance to which the voltage value belongs can be determined, and the information sent by the electronic price tag at the contact position corresponding to which resistance can be determined, and then the determined resistance corresponding to the The relative position can locate the position of the electronic price tag that sends the information, so the position of the electronic price tag that sends the information on the fixed device is obtained. It realizes the position of the electronic price tag on the fixed device through the line communication combined with the resistance divider value. Due to the strong anti-interference ability of the line communication, easy construction, and the voltage on the resistance band also has strong anti-interference ability and stability Excellent characteristics, compared with the prior art WiFi, BLE, UWB, RFID, infrared indoor positioning technology, etc., this application can avoid the problems of noise signal interference, complex construction, poor stability, and high cost. It is beneficial to reduce costs, improve positioning accuracy, improve anti-interference ability, and facilitate construction and implementation.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the attached picture:

Figure 1 is a structural block diagram of an electronic price tag positioning device provided by an embodiment of the present invention;

2 is a schematic diagram of a fixing device provided by an embodiment of the present invention;

3 is a schematic circuit diagram of an electronic price tag positioning device provided by an embodiment of the present invention;

4 is a working flow chart of an electronic price tag positioning device provided by an embodiment of the present invention;

Fig. 5 is a flowchart of a method for locating an electronic price tag according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following further describes the embodiments of the present invention in detail with reference to the accompanying drawings. Here, the exemplary embodiments of the present invention and the description thereof are used to explain the present invention, but not as a limitation to the present invention.

Fig. 1 is a structural block diagram of an electronic price tag positioning device in an embodiment of the present invention. As shown in Figure 1, the device may include:

The fixing device 102 is used to fix an electronic price tag, wherein a plurality of contact positions are provided on the fixing device, the electronic price tag is fixed at each contact position, and the electronic price tag is fixed at each contact position Communicate with the controller through a communication cable;

The resistance band 1021 is arranged in the fixing device, and the resistance band includes a plurality of resistors of equal value and connected in series, and each resistance corresponds to a relative position on the fixing device, and the resistance and the contact position are one by one Correspondingly, the resistance corresponding to each other is the same as the position of the contact position on the fixing device, the electronic price tag fixed at each contact position is connected to the resistance corresponding to the contact position, and the corresponding resistance of the contact position is obtained. The voltage value of the resistance;

The controller 104 receives the information sent by the electronic price tag fixed at each contact position through the communication cable, determines the resistance to which the voltage value belongs according to the voltage value in the information, and determines the resistance to which the voltage value belongs according to the determined value. The relative position corresponding to the resistance locates the electronic price tag that sends the information.

As shown in FIG. 1, in the embodiment of the present invention, it is proposed to provide a plurality of contact positions on the fixing device to fix the electronic price tag, and to set a resistance band, and the resistance band includes a plurality of resistors of equal value and connected in series. Each resistance corresponds to a relative position on the fixing device, and the resistance corresponds to the contact position one-to-one. The corresponding resistance and the contact position are the same as the position on the fixing device. Each contact position is fixed electronically. The price tag is connected to the resistance corresponding to the contact position, and the voltage value of the resistance corresponding to the contact position is obtained. The electronic price tag fixed at each contact position communicates with the controller through the communication cable, and the controller receives the position of each contact According to the information sent by the fixed electronic price tag, the resistance to which the voltage value belongs can be determined according to the voltage value in the received information, and the information sent by the electronic price tag at the contact position corresponding to which resistance can be determined, and then according to the determination The relative position corresponding to the output resistance can locate the position of the electronic price tag that sends the information, and therefore, the position of the electronic price tag that sends the information on the fixed device is obtained. It realizes the position of the electronic price tag on the fixed device through the line communication combined with the resistance divider value. Due to the strong anti-interference ability of the line communication, easy construction, and the voltage on the resistance band also has strong anti-interference ability and stability Excellent characteristics, compared with the prior art WiFi, BLE, UWB, RFID, infrared indoor positioning technology, etc., this application can avoid the problems of noise signal interference, complex construction, poor stability, and high cost. It is beneficial to reduce costs, improve positioning accuracy, improve anti-interference ability, and facilitate construction and implementation.

In specific implementation, this application does not limit the specific structure of the fixing device, as long as multiple contact positions can be set to fix the electronic price tag, and a contact position is a certain position on the fixing device. For example, as shown in FIG. 2, the above-mentioned fixing device may be in the form of an extruded strip, and a plurality of contact positions can be provided on the extruded strip, and each contact position communicates with the controller through a communication cable.

During specific implementation, the above-mentioned controller 104 may adopt any chip or processor with data processing capability.

In a specific implementation, the above-mentioned controller 104 may be arranged inside the fixing device 102 or outside the fixing device 102.

In specific implementation, this application uses the line communication combined with the resistance divider value to locate the electronic price tag. Because the line communication and the voltage on the resistance band have relatively strong anti-interference ability and strong stability, it can relatively improve the accuracy of positioning. In order to further improve the positioning accuracy, in this embodiment, the electronic price tag can be located in the following ways:

The controller 104 is specifically configured to determine the voltage according to the voltage value in the information when the resistors on the resistor band are arranged at equal intervals and the relative position corresponding to each resistor is the distance between two adjacent resistors. The serial number on the resistance band of the resistor to which the value belongs, multiply the serial number of the determined resistor on the resistance band by the distance between two adjacent resistors, and use the product as the position of the electronic price tag that sends the information; Alternatively, when the relative position corresponding to each resistor is the specific position of the resistor on the fixing device, the relative position corresponding to the determined resistor is used as the position of the electronic price tag that sends the information.

Specifically, since the resistors on the resistance band are of equal value and are connected in series, the voltage value in the information can be used to determine which resistance the voltage value belongs to, that is, the serial number of the resistance on the resistance band is determined, and the resistance on the resistance band When the resistors are set at equal intervals, as long as the distance between two adjacent resistors is known, the position of the electronic price tag sending the information on the fixed device can be determined. For example, the multiple contact positions on the fixture and the multiple resistors on the resistance band are in a certain order (for example, from the ground point of the resistance band to the power supply, from the left end to the right end of the fixture or from the right end to the left end) Number, the serial numbers of the contact positions and resistors are 1, 2, 3...N. Multiple resistors are arranged at equal intervals. The relative position of each resistor is M. The distance between two adjacent resistors is M, and the resistance value is known. When the controller receives the information sent by an electronic price tag with a fixed contact position, it can calculate the serial number of the resistor to which the voltage value belongs based on the voltage value in the information, for example, determine the serial number of the resistor to which the voltage value belongs If it is 3, the result of multiplying 3 by M is used as the position of the electronic price tag that sends the information on the fixed device.

Specifically, when the relative position corresponding to each resistor is the specific position of the resistor on the fixing device, that is, the relative position of each resistor is the specific position value of the resistor on the fixing device, for example, when the resistor is fixed On the device at S meters with a certain end as the starting point, the relative position corresponding to the determined resistance can be directly used as the position of the electronic price tag for sending information on the fixed device.

In specific implementation, in order to facilitate the insertion and removal of the electronic price tag at the contact position and realize cable communication, in this embodiment, each contact position is provided with a first metal contact and a second metal contact, each The electronic price tag fixed at the contact position is respectively connected with the first metal contact and the second metal contact, the first metal contact at each contact position is connected with the communication cable, and the first metal contact at each contact position is connected to the communication cable. The two metal contacts are connected with the resistance on the resistance band.

In specific implementation, in order to realize the common ground between the electronic price tag and the controller at each contact position, in this embodiment, it also includes: a common ground cable, and the third metal contact at each contact position is connected to the The common ground cable is connected, the electronic price tag fixed at each contact position is connected with a third metal contact, and the common ground cable is connected with the controller.

For example, as shown in Figure 3, ESL1, ESL2, and ESL3 respectively represent three electronic price tags fixed at the three contact positions on the fixing device, namely, electronic price tag 1, electronic price tag 2, electronic price tag 3, Master On behalf of the controller, the electronic price tag at each contact position is connected to the controller through the first metal contact using a communication cable A, and the electronic price tag at each contact position is connected to the controller through the second metal contact. The corresponding resistance on the resistance band C is connected, the second metal contact and the resistance are connected through the AD line to collect the voltage value of the resistance, and the electronic price tag at each contact position is connected to the controller through the third metal contact On a common ground cable B.

In specific implementation, the above-mentioned resistance band may be a circuit in which multiple resistors of equal value are connected in series between the power supply and the ground, and the number of resistors may be one more than the number of contact positions.

During specific implementation, in order to determine which electronic price tag is located, in this embodiment, the information sent by the electronic price tag may include the unique identifier of the electronic price tag, for example, the ID of the electronic price tag . That is, after the electronic price tag sends information to the controller, the controller can determine which electronic price tag sent the information according to the unique identifier in the information, and the controller can also determine the resistance serial number according to the voltage value in the information, and then determine according to the The relative position corresponding to the resistor can locate the position of the electronic price tag that sends the information, and finally, the relationship between the unique identifier of the electronic price tag and the position can be determined, and which electronic price tag is located on the fixed device can be located. superior.

In specific implementation, the electronic price tag and the controller can communicate through the one-wire communication protocol. Within a certain area, the electronic price tag on multiple fixed devices can communicate through a router.

In specific implementation, as shown in FIG. 4, the working process of the positioning device for the above electronic price tag may include the following steps:

The electronic price tag and controller equipment of each fixed device under the same AP (router) are synchronized by the wireless communication system and wake up at the same time. When the electronic price tag wakes up, the electronic price tag collects the voltage value of the resistance corresponding to the contact position and assigns its own address through the preset threshold. When the controller wakes up, the controller starts from address 0 and sends the electronics through the communication bus. Price tag information query command to query equipment information on N addresses.

When the electronic price tag receives an information query request whose address matches its own address, the electronic price tag responds to the controller's own information through the communication bus (information includes ID serial number, voltage value, etc.), when the electronic price tag receives the same address as its own When the addresses do not match, the electronic price tag does not respond to the request; the controller judges whether the electronic price tag responds, if it is, the controller records the electronic price tag address and device information; if not, the controller determines whether the address traversal is complete, if yes, control The device sends the device information to the server, otherwise, the address is incremented and continues to inquire about the device information at the next address.

During specific implementation, in this embodiment, an electronic price tag positioning system is also provided. The system includes: a server and any of the above-mentioned electronic price tag positioning devices, wherein:

The controller reports the location information of each electronic price tag fixed on the fixing device to the server. The controller can also receive positioning scheduling information sent by the server.

Based on the same inventive concept, an embodiment of the present invention also provides a method for locating an electronic price tag, as described in the following embodiment. Since the principle of the electronic price tag positioning method to solve the problem is similar to that of the electronic price tag positioning device, the implementation of the electronic price tag positioning method can refer to the implementation of the electronic price tag positioning device, and the repetition will not be repeated.

Fig. 5 is a flow chart of a method for locating an electronic price tag according to an embodiment of the present invention. As shown in Fig. 5, the method includes:

Step 502: Record the one-to-one correspondence between the resistance on the resistance band and the contact position on the fixing device, and record the relative position of each resistance on the resistance band on the fixing device, wherein the fixing device A plurality of contact positions are set on the upper part, and an electronic price tag is fixed at each contact position, and the electronic price tag fixed at each contact position communicates with the controller through a communication cable, and the resistance band includes a plurality of equivalent And for the resistors connected in series, the corresponding resistance is the same as the position of the contact position on the fixing device, the electronic price tag fixed at each contact position is connected with the resistance corresponding to the contact position, and the contact position is obtained. The voltage value of the resistor corresponding to the point position;

Step 504: The controller uses the communication cable to receive the information sent by the electronic price tag fixed at each contact position, and determine the resistance to which the voltage value belongs according to the voltage value in the information, and according to the determined value The relative position corresponding to the resistance locates the electronic price tag that sends the information.

In one embodiment, determining the resistor to which the voltage value belongs according to the voltage value in the information, and locating the electronic price tag that sends the information according to the relative position corresponding to the determined resistor includes;

When the resistors on the resistance band are arranged at equal intervals and the relative position corresponding to each resistance is the distance between two adjacent resistors, it is determined according to the voltage value in the information that the resistor to which the voltage value belongs is in the resistance band Multiply the sequence number of the determined resistance on the resistance band by the distance between two adjacent resistances, and use the product as the position of the electronic price tag that sends the information; or, in the relative position of each resistance When the position is the specific position of the resistor on the fixing device, the relative position corresponding to the determined resistor is used as the position of the electronic price tag that sends the information.

In one embodiment, a first metal contact and a second metal contact are provided at each contact position, and the electronic price tag fixed at each contact position is respectively connected to the first metal contact and the second metal contact , The first metal contact at each contact position is connected with the communication cable, and the second metal contact at each contact position is connected with the resistor on the resistance band.

In one embodiment, the third metal contact of each contact position is connected to a common ground cable, the electronic price tag fixed at each contact position is connected to the third metal contact, and the common ground wire The cable is connected to the controller.

In one embodiment, the information sent by the electronic price tag includes a unique identifier of the electronic price tag.

In this embodiment, a computer-readable storage medium is provided, and the computer-readable storage medium stores a computer program that executes any of the above-mentioned methods for locating an electronic price tag.

Specifically, computer-readable storage media includes permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer-readable storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only Memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage , Magnetic cassette tape, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable storage media does not include transitory media, such as modulated data signals and carrier waves.

The embodiment of the present invention achieves the following technical effects: It is proposed that a plurality of contact positions are arranged on the fixing device to fix the electronic price tag, and a resistance band is arranged. The resistance band includes a plurality of resistors of equal value and connected in series, and each resistor Corresponding to a relative position on the fixing device, the resistance corresponds to the contact position one-to-one, the corresponding resistance and the contact position are the same on the fixing device, and the electronic price tag fixed at each contact position corresponds to the The resistance corresponding to the contact position is connected, and the voltage value of the resistance corresponding to the contact position is obtained. The electronic price tag fixed at each contact position communicates with the controller through the communication cable, and the controller receives the electronic fixed at each contact position. According to the information sent by the price tag, the resistor to which the voltage value belongs can be determined according to the voltage value in the received information, and the information sent by the electronic price tag at the contact position corresponding to which resistor can be determined, and then corresponding to the determined resistance The relative position of, can locate the position of the electronic price tag that sends the information, so the position of the electronic price tag that sends the information on the fixed device is obtained. It realizes the position of the electronic price tag on the fixed device through the line communication combined with the resistance divider value. Due to the strong anti-interference ability of the line communication, easy construction, and the voltage on the resistance band also has strong anti-interference ability and stability Excellent characteristics, compared with the prior art WiFi, BLE, UWB, RFID, infrared indoor positioning technology, etc., this application can avoid the problems of noise signal interference, complex construction, poor stability, and high cost. It is beneficial to reduce costs, improve positioning accuracy, improve anti-interference ability, and facilitate construction and implementation.

Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

The present invention is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment can be used to generate It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in further detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection, any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention shall be included in the scope of protection of the present invention.

Claims

An electronic price tag positioning device, which is characterized in that it comprises:

A fixing device for fixing an electronic price tag, wherein a plurality of contact positions are provided on the fixing device, the electronic price tag is fixed at each contact position, and the electronic price tag fixed at each contact position passes The communication cable communicates with the controller;

The resistance band is arranged in the fixing device, the resistance band includes a plurality of resistors of equal value and connected in series, and each resistance corresponds to a relative position on the fixing device, and the resistance corresponds to the contact position one by one , The resistance corresponding to each other is the same as the position of the contact position on the fixing device, the electronic price tag fixed at each contact position is connected to the resistance corresponding to the contact position, and the resistance corresponding to the contact position is obtained The voltage value;

The controller receives the information sent by the electronic price tag fixed at each contact position through the communication cable, determines the resistance to which the voltage value belongs according to the voltage value in the information, and according to the determined resistance The relative position corresponding to the resistance locates the electronic price tag that sends the information.
The positioning device of an electronic price tag according to claim 1, wherein the controller is specifically configured to arrange the resistors on the resistance band at equal intervals and the relative position of each resistor is two adjacent ones. When determining the distance between the resistors, the serial number of the resistor on the resistance band to which the voltage value belongs is determined according to the voltage value in the information, and the serial number of the determined resistor on the resistance band is multiplied by two adjacent resistors Use the product as the position of the electronic price tag that sends the information; or, when the relative position corresponding to each resistance is the specific position of the resistance on the fixing device, the determined resistance corresponds to the The relative position is used as the position of the electronic price tag that sends the information.
The positioning device of an electronic price tag according to claim 1, wherein each contact position is provided with a first metal contact and a second metal contact, and the electronic price tag fixed at each contact position is respectively connected to The first metal contact is connected to the second metal contact, the first metal contact at each contact position is connected to the communication cable, and the second metal contact at each contact position is connected to the resistance strip Resistance connection.
The positioning device for an electronic price tag according to claim 1, wherein:

Common ground cable, the third metal contact at each contact position is connected with the common ground cable, the electronic price tag fixed at each contact position is connected with the third metal contact, the common ground The cable is connected to the controller.
The positioning device for an electronic price tag according to any one of claims 1 to 4, wherein the information sent by the electronic price tag includes a unique identifier of the electronic price tag.
An electronic price tag positioning system, characterized by comprising: a server and the electronic price tag positioning device according to any one of claims 1 to 5, wherein:

The controller reports the location information of each electronic price tag fixed on the fixing device to the server.
An electronic price tag positioning method, which is characterized in that it comprises:

Record the one-to-one correspondence between the resistance on the resistance band and the contact position on the fixing device, and record the relative position of each resistance on the resistance band on the fixing device, wherein the fixing device is provided with more An electronic price tag is fixed at each contact position, and the electronic price tag fixed at each contact position communicates with the controller through a communication cable, and the resistance band includes a plurality of equal value and connected in series The resistance corresponding to each other is the same as the position of the contact position on the fixing device, the electronic price tag fixed at each contact position is connected to the resistance corresponding to the contact position, and the corresponding contact position is obtained The voltage value of the resistance;

The controller uses the communication cable to receive the information sent by the electronic price tag fixed at each contact position, determine the resistor to which the voltage value belongs based on the voltage value in the information, and determine the value of the resistor based on the determined value. The corresponding relative position locates the electronic price tag that sends the information.
The method for locating an electronic price tag according to claim 7, wherein the resistor to which the voltage value belongs is determined according to the voltage value in the information, and the relative position corresponding to the determined resistor is located and sent. The electronic price tag of the information includes;

When the resistors on the resistance band are arranged at equal intervals and the relative position corresponding to each resistance is the distance between two adjacent resistors, it is determined according to the voltage value in the information that the resistor to which the voltage value belongs is in the resistance band Multiply the sequence number of the determined resistance on the resistance band by the distance between two adjacent resistances, and use the product as the position of the electronic price tag that sends the information; or, in the relative position of each resistance When the position is the specific position of the resistor on the fixing device, the relative position corresponding to the determined resistor is used as the position of the electronic price tag that sends the information.
The positioning method of an electronic price tag according to claim 7, wherein a first metal contact and a second metal contact are arranged at each contact position, and the electronic price tag fixed at each contact position is respectively connected to The first metal contact is connected to the second metal contact, the first metal contact at each contact position is connected to the communication cable, and the second metal contact at each contact position is connected to the resistance strip Resistance connection.
The method for positioning an electronic price tag according to claim 7, wherein the third metal contact at each contact position is connected to a common ground cable, and the electronic price tag fixed at each contact position is connected to the first Three metal contacts are connected, and the common ground cable is connected to the controller.
The method for locating an electronic price tag according to any one of claims 7 to 10, wherein the information sent by the electronic price tag includes a unique identifier of the electronic price tag.
A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the method for positioning an electronic price tag according to any one of claims 7 to 11.