Abstract: A device positioning method and system by using signal direction, and the method includes: sending, by a device to be located, an angle-measurable signal to a base station, and the angle-measurable signal includes heartbeat data having an ID of the device to be located, and a sine wave of a preset duration or a modulated wave of a known digital sequence preset duration; calculating, by the base station, an angle of arrival based on the angle-measurable signal, and sending the angle of arrival to a location server, and the base station includes an angle of arrival (AOA) calculation module and an antenna array required for an AOA measurement; and calculating, by the positioning server, a position of the device to be located based on the angle of arrival.

Abstract: The present disclosure provides a locating method and a locating system for a smart shopping cart, a computer device and a storage medium. The method includes: constructing a locating fingerprint database of an smart shopping cart based on commodity attributes collected by an intelligent device and shelf label heartbeat signals received by a communication module; when a motion sensor obtains the motion data of the shopping cart body, the communication module sends all shelf label heartbeat signals received within a second preset time window to a server; the server matches all the shelf label heartbeat signals received within the second preset time window with the locating fingerprint database to obtain locating information of the smart shopping cart.

Abstract: Disclosed are a control method for electronic price tags, an electronic price tag and an electronic price tag system. The control method comprises: receiving at least one first service instruction by a wireless communication module, and receiving at least one second service instruction by a short-distance communication module; and performing, by a fusion processing module, fusion processing on the at least one first service instruction and the at least one second service instruction, which are of a same service type and have an effective duration overlap therebetween, to enable a response module to respond synchronously according to control parameters obtained after fusion processing.

Abstract: A method for generating display information of an electronic price tag includes: comparing supported colors of the electronic price tag with a display color of each pixel in each to-be-displayed region, and dividing the each to-be-displayed region into a to-be-adjusted display region and a normal display region according to a comparison result; determining a target color of each pixel from the supported colors of the electronic price tag according to a display color of the each pixel in the to-be-adjusted display region; generating a rendering result of to-be-displayed information according to the target color of the each pixel in the to-be-adjusted display region and a display color of each pixel in the normal display region, and sending the rendering result of the to-be-displayed information to the electronic price tag so that the electronic price tag displays the rendering result of the to-be-displayed information.

Abstract: A method for generating display information of an electronic price tag includes: comparing supported colors of the electronic price tag with a display color of each pixel in each to-be-displayed region, and dividing the each to-be-displayed region into a to-be-adjusted display region and a normal display region according to a comparison result; determining a target color of each pixel from the supported colors of the electronic price tag according to a display color of the each pixel in the to-be-adjusted display region; generating a rendering result of to-be-displayed information according to the target color of the each pixel in the to-be-adjusted display region and a display color of each pixel in the normal display region, and sending the rendering result of the to-be-displayed information to the electronic price tag so that the electronic price tag displays the rendering result of the to-be-displayed information.

Abstract: The present disclosure provides a locating method and a locating system for a smart shopping cart, a computer device and a storage medium. The method includes: constructing a locating fingerprint database of an smart shopping cart based on commodity attributes collected by an intelligent device and shelf label heartbeat signals received by a communication module; when a motion sensor obtains the motion data of the shopping cart body, the communication module sends all shelf label heartbeat signals received within a second preset time window to a server; the server matches all the shelf label heartbeat signals received within the second preset time window with the locating fingerprint database to obtain locating information of the smart shopping cart.

Abstract: The present disclosure provides a communication method of an electronic shelf label system, a system, a computer device and a storage medium. The method includes: configuring, by a server, an offset of each of base stations in a corresponding synchronization sub-network based on neighboring relationships between all the base stations in each of the synchronization sub-networks, so that each of the base stations calculates synchronization frame transmission time in a predetermined signal transmission cycle based on the offset; calculating, by each of the base stations, idle time in a synchronization channel based on the synchronization frame transmission time, so that each of the base stations receives a target synchronization frame sent by a superior base station in the idle time of the synchronization channel. According to the present disclosure, the synchronization frames sent by all the base stations has central and adjacent feature in time.

Abstract: This disclosure provides a method of dynamically adjusting timing between adjacent networks in a synchronous network and an electronic shelf label system. The method includes: determining, by a server, a timing adjustment direction and a timing adjustment value of a current network based on an interference timing relationship diagram; generating, by the server, a corresponding adjustment task form the timing adjustment direction and the timing adjustment value of the current network, and sending the adjustment task to a master base station in the current network in the processing of each of the current networks, such that the master base station and a secondary base station dynamically adjust timing based on the adjustment task.

Abstract: The present disclosure provides a map information acquisition method and a map acquisition apparatus and a non-transitory computer-readable storage medium. The method comprises: acquiring and constructing, by a map acquisition apparatus, map data, and acquiring, by the map acquisition apparatus, shelf identity information of each of shelves, wherein the shelf identity information is in one-to-one correspondence with the shelves, wherein the map acquisition apparatus comprises: a shopping cart component provided with a map construction system and a radio frequency identification reader; and marking, by the map acquisition apparatus, the map data according to each of the shelf identity information, and generating, by the map acquisition apparatus, map information marked with multiple pieces of shelf identity information.

Abstract: The present disclosure provides a locating method and a locating system for a smart shopping cart, a computer device and a storage medium. The method includes: constructing a locating fingerprint database of an smart shopping cart based on commodity attributes collected by an intelligent device and shelf label heartbeat signals received by a communication module; when a motion sensor obtains the motion data of the shopping cart body, the communication module sends all shelf label heartbeat signals received within a second preset time window to a server; the server matches all the shelf label heartbeat signals received within the second preset time window with the locating fingerprint database to obtain locating information of the smart shopping cart.

Abstract: A positioning method for an electrical shelf label, a computer device, and a non-transitory computer readable storage medium. The method includes: obtaining, by a server, a candidate electronic shelf label with a fuzzy positioning result; sequentially executing, by each of the candidate-matching shelf label pairs, a distance measurement task according to the distance measurement instruction to obtain a measured distance between the candidate electronic shelf label and each of the matching electronic shelf labels; revising, by the server, the fuzzy positioning result of the candidate electronic shelf label based on all the measured distances to determine an actual positioning result for the candidate electronic shelf label.

Abstract: The present disclosure provides a communication method of an electronic shelf label system, a system, a computer device and a storage medium. The method includes: configuring, by a server, an offset of each of base stations in a corresponding synchronization sub-network based on neighboring relationships between all the base stations in each of the synchronization sub-networks, so that each of the base stations calculates synchronization frame transmission time in a predetermined signal transmission cycle based on the offset; calculating, by each of the base stations, idle time in a synchronization channel based on the synchronization frame transmission time, so that each of the base stations receives a target synchronization frame sent by a superior base station in the idle time of the synchronization channel. According to the present disclosure, the synchronization frames sent by all the base stations has central and adjacent feature in time.

Abstract: The present disclosure provides a communication method of an electronic shelf label system, a system, and a computer device. The method includes: repeatedly sending, by each of the plurality of base stations, a synchronization frame, wherein the synchronization frame includes a packet sequence number, and each of the synchronization frames includes a different packet sequence number; receiving, by the electronic shelf label, the synchronization frame at a receiving time point scheduled to wake up; determining whether the packet sequence number of the synchronization frame is the same as a packet sequence number corresponding to the receiving time point; and adjusting, if both are the same, by the electronic shelf label, a duration of the next sleep to compensate for the time difference, so as the next reception of a synchronization frame includes a packet sequence number corresponding to the receiving time point.

Abstract: A shelf label communication method based on a synchronous network, a shelf label system and a computer device are provided. The synchronous network includes a base station topological structure, including a master base station, a first-level secondary base station directly connected to the master base station, and a (i+1)th-level secondary base station directly connected to an ith-level secondary base station, and each base station being connected to only one superior base station. The first-level secondary base station obtains a first synchronization signal from the master base station, so the first-level secondary base station starts to operate according to system time of the master base station. Further, the (i+1)th-level secondary base station obtains a second synchronization signal from the ith-level secondary base station, so that the (i+1)th-level secondary base station starts to operate according to local system time of the ith-level secondary base station.

Abstract: A sensing system is provided that includes a first sub-sensing system having a first azimuth plane. The first sub-sensing system includes a Gradient-index lens, and a first plurality of antenna elements arranged adjacent to the Gradient-index lens and configured to receive a first signal emanating from a first field of view. The sensing system also includes a second sub-sensing system having a second azimuth plane oriented at an angle with respect to the first azimuth plane and a second plurality of antenna elements configured to receive a second signal emanating from a second field of view.

Abstract: A method and a system for electronic shelf label network access and roaming communication are disclosed in the present disclosure. The present disclosure greatly improves the success rate of a background server in selecting an optimal base station to timely communicate with an electronic shelf label that has newly entered a coverage area of an electronic shelf label system or moved, and ensures the reliability and stability of the communication between the background server and the electronic shelf label.

Abstract: The present disclosure discloses a method and system for querying and responding to grouped electronic shelf labels, which simplify a large number of query instructions into one query instruction, so that a transmission data volume for querying a large number of electronic shelf labels is greatly saved, the overhead caused by queries on the system is reduced, and the system service throughput is improved.

Abstract: A method and a system for electronic shelf label network access and roaming communication are disclosed in the present disclosure. The present disclosure greatly improves the success rate of a background server in selecting an optimal base station to timely communicate with an electronic shelf label that has newly entered a coverage area of an electronic shelf label system or moved, and ensures the reliability and stability of the communication between the background server and the electronic shelf label.

Abstract: The disclosure provides a shelf label communication method based on a synchronous network, a shelf label system and a computer device. In the method, an electronic shelf label establishes a first timing task of a timer when receiving a timing service instruction; determines a timing duration of the first timing task based on a time difference between current local system time when the timing service instruction is received and the instruction execution system time, and starts the first timing task; the electronic shelf label cyclically calibrates a current timing duration in the first timing task based on the periodically received base-station system time, to obtain the calibrated current timing duration.

Abstract: Methods, systems and computer devices are provided for adjusting a frame-listening cycle. The method includes: configuring, by a server, a fixed frame-listening cycle of an electronic shelf label according to a time period; and sending, by the server, a second frame-listening cycle modification command through a base station when the server is to issue the fast response service during the low power consumption time period, so that the electronic shelf label modifies the current frame-listening cycle to a fast frame-listening cycle according to the second frame-listening cycle modification command. According to the present disclosure, the electronic shelf label can not only respond to the fast response service in real time, but also keep the low power consumption of a long frame-listening cycle, thereby simultaneously satisfying the requirements of high real-time performance and low power consumption of the electronic shelf label.