CN116506890A - Data transmission method and system based on electronic price tag, price tag and base station - Google Patents

Data transmission method and system based on electronic price tag, price tag and base station Download PDF

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Publication number
CN116506890A
CN116506890A CN202310467174.8A CN202310467174A CN116506890A CN 116506890 A CN116506890 A CN 116506890A CN 202310467174 A CN202310467174 A CN 202310467174A CN 116506890 A CN116506890 A CN 116506890A
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China
Prior art keywords
rate
price tag
base station
electronic price
frequency
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CN202310467174.8A
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Chinese (zh)
Inventor
董晶
徐道琦
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Zhejiang Baozi Technology Co ltd
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Zhejiang Baozi Technology Co ltd
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Priority to CN202310467174.8A priority Critical patent/CN116506890A/en
Publication of CN116506890A publication Critical patent/CN116506890A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a data transmission method, a system, a price tag and a base station based on an electronic price tag, wherein the method comprises the following steps of S01: the electronic price tag broadcasts a heartbeat data packet to at least one corresponding base station at a frequency-rate; s02: at least one channel receives the heartbeat data packet at the first frequency rate and replies a response packet, and at least one other channel is selected to send the commodity data packet to be updated at the second frequency rate; s03: the electronic price tag receives a response packet, if the task is switched to the second frequency rate, the commodity packet to be updated is received, and step S04 is executed; if no task enters dormancy, wake up after the scheduled time and return to step S01; s04: after analyzing the received commodity package and displaying commodity information, the electronic price tag switches to a frequency-rate-one-time transmission notification task to send the received heartbeat package to the wireless base station, enters dormancy, and executes step S01 after the next awakening in the appointed time. The method not only gives consideration to the signal coverage of the wireless base station, but also balances the electronic price tag to realize the update of data under low power consumption.

Description

Data transmission method and system based on electronic price tag, price tag and base station
Technical Field
The present invention relates to the field of electronic price tags, and in particular, to a data transmission system, a data transmission method and a wireless base station based on an electronic price tag.
Background
The electronic price tag is also called an electronic shelf tag, is an electronic display device with an information receiving and transmitting function, is mainly applied to electronic tags which display price information in supermarkets, convenience stores, pharmacies and the like, is placed on a shelf, can replace the electronic display device of the traditional paper price tag, is connected with a computer database of a market through a wired or wireless network, and displays the latest commodity information through a screen on the electronic shelf tag.
Because of the specificity of the application scene of the electronic price tag, the data volume issued to the price tag by the base station is generally larger, such as picture data, a few K, a plurality of hundreds of K, even M data volume, and the data volume required to be transmitted to the base station by the price tag is generally smaller, such as ID, task state, current voltage, signal value and the like.
The existing base station transmission characteristics are that on the premise of the same frequency and the same transmitting power, the low-rate transmission distance is long, the transmission data amount in unit time is small, the high-rate transmission distance is short, the transmission data amount in unit time is large, so that when the data is transmitted in a long distance, the accuracy of the transmission data is ensured, the low-rate transmission is often adopted, and otherwise, the risk of information loss exists.
Disclosure of Invention
Aiming at the problems that an electronic price tag system in the prior art cannot simultaneously reduce the risk of information loss and the transmission distance is far, the invention provides a data transmission system, a data transmission method and a wireless base station based on the electronic price tag.
The specific contents include:
the data transmission method of the electronic price tag comprises the following steps:
s01: the electronic price tag broadcasts a heartbeat data packet inquiring whether a task exists or not to at least one corresponding base station at a frequency-rate;
s02: the base station is provided with a plurality of channels corresponding to a plurality of frequencies, wherein at least one channel receives the heartbeat data packet at the first frequency rate and replies a response packet, and at least one other channel is selected to send commodity data packets to be updated at the second frequency rate;
s03: the electronic price tag receives the response packet, if the electronic price tag has a task, the electronic price tag is switched to the frequency two-rate two to receive the commodity packet to be updated, and step S04 is executed; if no task exists, the electronic price tag enters dormancy, wakes up and returns to the step S01 after a preset time;
s04: and after analyzing the received commodity package and displaying commodity information, the electronic price tag is switched to the frequency-rate-one-time transmission notification task-received heartbeat package to the wireless base station, then enters dormancy, and after waking up next time according to the appointed time, the step S01 is executed.
Preferably, the method further comprises: in the step S02, the wireless base station uploads the received heartbeat packet inquiring whether there is a task to a server;
and the server returns a response packet informing whether the task exists or not to the wireless base station, wherein when the response packet is the task, the commodity data packet to be updated is synchronously issued to the wireless base station.
Preferably, the method further comprises: s05: the wireless base station receives the heartbeat packets sent by all the electronic price tags at the frequency-rate one;
or the electronic price tag still does not receive the commodity data packet to be updated beyond the broadcasting time appointed by the task, and the commodity data packet to be updated is stopped from being sent;
s06, the wireless base station uploads the received heartbeat packet and the task completion condition to a server.
Preferably, the first rate is less than the second rate.
The invention also includes an electronic price tag, comprising:
the first data transmitting module is used for broadcasting heartbeat data packets for inquiring whether tasks exist to at least one corresponding base station by adopting a frequency one rate, the base station is provided with a plurality of channels, the channels correspond to the frequencies, at least one channel receives the heartbeat data packets at the frequency one rate one and replies response packets, and at least one other channel is selected to transmit commodity data packets to be updated at the frequency two rate two;
the first data receiving module is used for receiving the response packet at the first frequency-rate;
the variable frequency speed change module is used for judging whether a task exists or not according to the received response packet, if yes, the electronic price tag is switched to the frequency two-rate two-receiving commodity packet to be updated, if no, the electronic price tag enters dormancy and wakes up after a preset time; and
after analyzing the received commodity packet and displaying commodity information, switching to the frequency-rate-one-transmission notification task received heartbeat packet to the wireless base station, and then entering into dormancy, and waking up next time according to the appointed time.
And the display module is used for displaying the data of the commodity package to be updated.
Preferably, the electronic price tag is an active device.
Preferably, the first rate is less than the second rate in the electronic price tag.
The present invention also includes a wireless base station, including:
the second data receiving module is used for selecting at least one channel to receive the heartbeat data packet at the first rate of the frequency and replying a response packet, wherein the base station is provided with a plurality of channels, and the channels correspond to a plurality of frequencies;
the frequency rate selection module is used for selecting at least one other channel to send commodity data packets to be updated at a frequency two rate two;
and the second data transmitting module is used for transmitting the commodity data packet to be updated to the electronic price tag through the second frequency rate.
Preferably, the first rate is smaller than the second rate in the radio base station.
The invention also comprises a data transmission system based on the electronic price tag, which comprises:
the electronic price tag comprises an electronic price tag and a wireless base station connected with the electronic price tag, and a server connected with the wireless base station, wherein the electronic price tag is the electronic price tag; the radio base station is the above-mentioned radio base station.
Preferably, the server is configured to update or backup the commodity information of the electronic price tag, or the server is configured to perform a configuration operation on the wireless base station.
Preferably, the server establishes connection with the wireless base station in a wireless or wired manner.
The technical scheme has the following advantages or beneficial effects:
1. the electronic price tag is switched between the first frequency rate and the second frequency rate, and data is transmitted or received through different transmission rates, so that the signal coverage range of the wireless base station is considered, and the electronic price tag can be balanced to realize data updating under low power consumption;
2. the system can not only simultaneously meet the requirement of reducing the risk of information loss through switching matching between frequency rates, but also give consideration to the technical problem of long transmission distance, and corresponds to data with large data volume at high rate and data with small data volume at low rate.
Drawings
Embodiments of the present invention will now be described more fully with reference to the accompanying drawings. The drawings, however, are for illustration and description only and are not intended as a definition of the limits of the invention.
FIG. 1 is a flow chart of a data transmission method in the present invention;
FIG. 2 is a flow chart of another embodiment of the data transmission method of the present invention;
FIG. 3 is a schematic diagram of a connection structure of a data transmission system according to the present invention;
FIG. 4 is a schematic diagram of an electronic price tag according to the present invention;
fig. 5 is a schematic diagram of a radio base station according to the present invention.
Legend description:
1. a wireless base station; 11. a second data receiving module; 12. a frequency rate selection module; 13. a second data transmission module; 2. an electronic price tag; 21. a first data transmission module; 22. a variable frequency and variable speed module; 23. a first data receiving module; 24. a display module; 3. and a server.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
Referring to fig. 1, an embodiment of a data transmission method of an electronic price tag includes:
s01: the electronic price tag 2 broadcasts a heartbeat data packet inquiring whether a task exists or not to at least one corresponding base station at a frequency-rate; s02: the corresponding base station is provided with a plurality of channels, the channels correspond to a plurality of frequencies, wherein at least one channel receives the heartbeat data packet at a first frequency rate and replies a response packet, and at least one other channel is selected to send the commodity data packet to be updated at a second frequency rate; s03: the electronic price tag 2 receives the response packet, if the task exists, the electronic price tag 2 is switched to the second frequency rate to receive the commodity packet to be updated, and the step S04 is executed; if no task exists, the electronic price tag 2 enters dormancy, wakes up after a preset time and returns to the step S01; s04: after analyzing the received commodity packet and displaying commodity information, the electronic price tag 2 switches to a frequency-rate-one-time transmission notification task received heartbeat packet to the wireless base station 1, then enters dormancy, and performs step S01 after waking up next time according to the appointed time.
In this embodiment, the base station uses four antennas as an example, where the 4 antennas correspond to 4 channels, i.e. 4 frequencies A, B, C, D; rates of at least 2M and N; when the A/C frequency is used, the M rate is adopted, and when the B/D frequency is used, the N rate is adopted; price tag is equipped with 1 antenna, and can switch 4 frequencies A, B, C, D; at least 2 kinds of M and N can be regulated; when using a/C frequency, using M rate, and when using B/D frequency, using N rate, the above frequency can be a frequency band in a frequency band, for example, 2.4GHz is a frequency band, the inside contains several frequencies, 2402MHZ-2485MHZ frequency, A, B, C, D is the frequency therein.
In the specific embodiment, we will assume that electronic price tag 2 selects frequency one to correspond to frequency a, frequency M, frequency two to correspond to frequency B, and frequency N as an example, and frequency one is smaller than frequency two:
the electronic price tag 2 adopts the frequency A rate M to broadcast heartbeat data packets with tasks to the base station, wherein the tasks specifically refer to commodity packets to be updated of the electronic price tag 2, the base station can select the frequency A rate M to receive the heartbeat data packets and reply response packets in order to cover more electronic price tags 2, and meanwhile, in order to achieve the high efficiency of data transmission, the wireless base station 1 selects the frequency B rate N to transmit the commodity data packets to be updated, wherein the frequency B rate N is a high transmission rate, and the frequency A rate M is a low transmission rate.
Further, after the electronic price tag 2 adopts the frequency a rate M (low rate) to send heartbeat packet data and receives response packets, the electronic price tag 2 enters the frequency B rate N (high rate) to receive commodity packets to be updated sent by the wireless base station 1, the electronic price tag 2 is usually powered by a button cell mode, the existing control mode adopts the high rate to send and receive data, the power consumption is larger, the method of controlling the power consumption adopts the low rate, the problem of unstable or lost data transmission is easily caused, and due to the unstable signals, longer transmission time is needed instead, and the overall power consumption is higher instead.
Preferably, frequency a=2402 MHZ to 2485MHZ, frequency b=2402 MHZ to 2485MHZ, frequency a and frequency B are unequal, low rate m=100 to 250kb/s, high rate n=500 to 1200kb/s, and high rate N is 2 to 6 times the low rate M. Example a=2412 MHZ, b=2410 MHZ. The technical scheme of the invention gives consideration to the signal coverage of the base station, and simultaneously can reduce the power consumption of the electronic price tag 2 on the basis of improving the data transmission accuracy.
Specifically, as the wireless base station 1 adopts active power supply in design, the transmission power is relatively large, and at least 2 channels are provided, one channel is in a low transmission rate receiving silence state at ordinary times, waits for receiving the heartbeat data of the electronic price tag, and adopts a high transmission rate transmission state when the task data needs to be transmitted in the other channel, and transmits the task data. The high transmission rate can be 5 times to 6 times of the low transmission rate, so that task data which is originally required to be transmitted for tens of seconds at the low transmission rate is instantaneously shortened to a few seconds or even shorter, the electronic price tag 2 can be shortened to a few seconds from receiving the task receipt for tens of seconds, and the loss of the electric quantity of the electronic price tag 2 is greatly optimized.
The electronic price tag 2 is just opposite, and is in regular dormancy in most time at ordinary times, and when dormancy is finished, is in the state that the heartbeat data packet is sent to low transmission rate, and after the completion of sending, if the wireless base station 1 end has the task to send the demand this moment, electronic price tag 2 gets into high transmission rate receiving state immediately, and then electronic price tag 2 just can receive picture task data. In a preferred embodiment, the method further comprises: in step S02, the radio base station 1 uploads the received heartbeat packet inquiring whether or not there is a task to the server 3; the server 3 returns a response packet informing whether there is a task to the wireless base station 1, wherein, when the response packet is a task, the commodity data packet to be updated is synchronously issued to the wireless base station 1. In this embodiment, the server 3 is configured to update or backup the commodity information of the electronic price tag 2, or the server 3 is configured to perform configuration operation on the wireless base station 1. The server 3 is connected with the wireless base station 1 by a wired or wireless mode (such as WiFi).
Referring to fig. 2, in a preferred embodiment, the method further comprises: s05: the wireless base station 1 receives the heartbeat packets sent by all the electronic price tags 2 at the frequency-rate-one; or the electronic price tag 2 still does not receive the commodity data packet to be updated beyond the broadcasting time appointed by the task, and the commodity data packet to be updated is stopped from being sent; s06, the wireless base station 1 uploads the received heartbeat packet and the task completion condition to the server 3.
Referring to fig. 4, the technical solution of the present invention further includes an embodiment of an electronic price tag, including:
a first data transmitting module 21, configured to broadcast a heartbeat packet for inquiring whether a task exists to at least one corresponding base station by using a frequency one rate, where the base station has a plurality of channels, and the plurality of channels correspond to the plurality of frequencies, and at least one channel receives the heartbeat packet at the frequency one rate and replies a response packet, and selects at least one other channel to transmit a commodity packet to be updated at the frequency two rate; a first data receiving module 23, configured to receive the response packet using the frequency-rate-one; the variable frequency speed change module 22 is configured to determine whether there is a task according to the received response packet, if yes, the electronic price tag 2 switches to the second frequency rate to receive the commodity packet to be updated, if no, the electronic price tag 2 goes to sleep, and wakes up after a predetermined time; and after analyzing the received commodity packet and displaying commodity information, switching to a frequency-rate-one-transmission notification task-received heartbeat packet to the wireless base station 1, and then entering into dormancy, and waking up next time according to the appointed time. And the display module is used for displaying the data of the commodity package to be updated. In this embodiment, the electronic price tag 2 is an active device, and the power supply is usually a battery, preferably a button battery, and the number of the electronic price tag can be 1 or 2; the display module 24 may be an electronic display screen, and may display updated information of commodity price, production place, etc., where the first rate is less than the second rate, specifically, the second rate is 2-6 times the first rate. The method comprises the steps of carrying out a first treatment on the surface of the The electronic price tag 2 is switched from low transmission rate data transmission to high transmission rate data reception, and the data is transmitted and received through different transmission rates, so that the transmission efficiency is improved, and meanwhile, the low power consumption of the electronic price tag 2 is considered.
Referring to fig. 5, the technical solution of the present invention further includes an embodiment of a wireless base station, including:
a second data receiving module 11, configured to select at least one channel to receive the heartbeat data packet at a frequency-rate-one and reply a response packet, where the base station has a plurality of channels, and the plurality of channels correspond to a plurality of frequencies; a frequency rate selection module 12 for selecting at least one other channel to transmit the commodity data packet to be updated at a frequency two rate two; the second data transmitting module 13 is configured to send the commodity data packet to be updated to the electronic price tag through a second rate, preferably, the first rate is smaller than the second rate, specifically, the second rate is 2-6 times the first rate. In this embodiment, since the wireless base station 1 is actively powered and is equipped with a power amplifier, the own transmitting power can already achieve a far coverage, under the premise that the far price tag can receive the picture data sent by the base station by improving the transmitting rate, the electronic price tag 2 has the advantages of small data volume to be sent, low-rate transmission and self-transmission for distance exchange, and when the wireless base station 1 is switched to a high-rate receiving state, the wireless base station can receive the picture data sent by the wireless base station 1, so that the double optimization of the distance between the base station and the price tag and the power consumption is achieved.
Referring to fig. 3, the technical scheme of the present invention further includes an embodiment of a data transmission system based on electronic price tags, including:
the electronic price tag 2 and the wireless base station 1 connected to the electronic price tag 2, and the server 3 connected to the wireless base station 1 are applied to the electronic price tag 2 and the wireless base station 1.
In this embodiment, the electronic price tag 2 and the wireless base station 1 are connected in a bidirectional peer-to-peer manner through a 2.4Ghz wireless private communication protocol, so that the connection efficiency is higher, and a wireless communication protocol of 5Ghz and above can be adopted between the electronic price tag 2 and the wireless base station 1.
In this embodiment, the server 3 is configured to update or backup the commodity information of the electronic price tag 2, or the server 3 is configured to perform configuration operation on the wireless base station 1; the server 3 establishes a connection with the wireless base station 1 in a wireless or wired manner.
In this embodiment, the server 3 is configured to store corresponding commodity information data, and send data to be updated to the electronic price tag 2 through the wireless base station 1 to update the commodity data.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included within the scope of the present invention.

Claims (10)

1. A method for transmitting data of an electronic price tag, comprising:
s01: the electronic price tag broadcasts a heartbeat data packet inquiring whether a task exists or not to at least one corresponding base station at a frequency-rate;
s02: the base station is provided with a plurality of channels corresponding to a plurality of frequencies, wherein at least one channel receives the heartbeat data packet at the first frequency rate and replies a response packet, and at least one other channel is selected to send commodity data packets to be updated at the second frequency rate;
s03: the electronic price tag receives the response packet, if the electronic price tag has a task, the electronic price tag is switched to the frequency two-rate two to receive the commodity packet to be updated, and step S04 is executed; if no task exists, the electronic price tag enters dormancy, wakes up and returns to the step S01 after a preset time;
s04: and after analyzing the received commodity package and displaying commodity information, the electronic price tag is switched to the frequency-rate-one-time transmission notification task-received heartbeat package to the wireless base station, then enters dormancy, and after waking up next time according to the appointed time, the step S01 is executed.
2. The method as recited in claim 1, further comprising: in the step S02, the wireless base station uploads the received heartbeat packet inquiring whether there is a task to a server;
and the server returns a response packet informing whether the task exists or not to the wireless base station, wherein when the response packet is the task, the commodity data packet to be updated is synchronously issued to the wireless base station.
3. The method as recited in claim 1, further comprising:
s05: the wireless base station receives the heartbeat packets sent by all the electronic price tags at the frequency-rate one;
or the electronic price tag still does not receive the commodity data packet to be updated beyond the broadcasting time appointed by the task, and the commodity data packet to be updated is stopped from being sent;
s06, the wireless base station uploads the received heartbeat packet and the task completion condition to a server.
4. The method as recited in claim 1, further comprising: the first rate is smaller than the second rate.
5. An electronic price tag, comprising:
the first data transmitting module is used for broadcasting heartbeat data packets for inquiring whether tasks exist to at least one corresponding base station by adopting a frequency one rate, the base station is provided with a plurality of channels, the channels correspond to the frequencies, at least one channel receives the heartbeat data packets at the frequency one rate one and replies response packets, and at least one other channel is selected to transmit commodity data packets to be updated at the frequency two rate two;
the first data receiving module is used for receiving the response packet at the first frequency-rate;
the variable frequency speed change module is used for judging whether a task exists or not according to the received response packet, if yes, the electronic price tag is switched to the frequency two-rate two-receiving commodity packet to be updated, if no, the electronic price tag enters dormancy and wakes up after a preset time; and
after analyzing the received commodity packet and displaying commodity information, switching to the first frequency and the first rate, sending a heartbeat packet informing that a task is received to a wireless base station, then entering into dormancy, and waking up next time according to the appointed time, wherein the first rate is smaller than the second rate;
and the display module is used for displaying the data of the commodity package to be updated.
6. The electronic price tag of claim 4 wherein the electronic price tag is an active device.
7. A wireless base station, comprising:
the second data receiving module is used for selecting at least one channel to receive the heartbeat data packet at the first rate of the frequency and replying a response packet, wherein the base station is provided with a plurality of channels, and the channels correspond to a plurality of frequencies;
the frequency rate selection module is used for selecting at least one other channel to send commodity data packets to be updated at a frequency two rate two;
and the second data transmitting module is used for transmitting the commodity data packet to be updated to the electronic price tag through the second frequency rate.
8. The wireless base station of claim 6 wherein said first rate is less than said second rate.
9. A data transmission system based on electronic price tags, comprising:
an electronic price tag and a wireless base station connected with the electronic price tag, and a server connected with the wireless base station, wherein the electronic price tag is the electronic price tag according to any one of claims 5-6; the radio base station is the radio base station according to claims 6-8.
10. The data transmission system according to claim 9, wherein the server is configured to update or back up commodity information of the electronic price tag, or the server is configured to perform a configuration operation on the wireless base station.
CN202310467174.8A 2023-04-25 2023-04-25 Data transmission method and system based on electronic price tag, price tag and base station Pending CN116506890A (en)

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CN202310467174.8A CN116506890A (en) 2023-04-25 2023-04-25 Data transmission method and system based on electronic price tag, price tag and base station

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Application Number Priority Date Filing Date Title
CN202310467174.8A CN116506890A (en) 2023-04-25 2023-04-25 Data transmission method and system based on electronic price tag, price tag and base station

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Publication Number Publication Date
CN116506890A true CN116506890A (en) 2023-07-28

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