CN103793825A - Electronic label host, electronic label slave machine and electronic label system for supermarket - Google Patents
Electronic label host, electronic label slave machine and electronic label system for supermarket Download PDFInfo
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- CN103793825A CN103793825A CN201410024023.6A CN201410024023A CN103793825A CN 103793825 A CN103793825 A CN 103793825A CN 201410024023 A CN201410024023 A CN 201410024023A CN 103793825 A CN103793825 A CN 103793825A
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Abstract
The invention discloses an electronic label host which comprises a controller, a Zigbee communication module, a WiFi communication module, a liquid crystal module, an EEPROM module, a FLASH module, an SD_CARD module and a USB serial port converting module. The modules are connected with the controller. The WiFi communication module and the Zigbee communication module are used for transmitting wireless information. The liquid crystal module is used for displaying information. The problems that a paper label is used for one time, errors can easily happen during replacing, displayed information is single, and losing can happen easily are solved. Meanwhile, the WiFi communication module and the Zigbee communication module are combined, and the manufacturing cost of the electronic label host is effectively controlled. The invention further provides an electronic label slave machine which is matched with the electronic label host for use and an electronic label system which comprises the electronic label host and the electronic label slave machine and is used for a supermarket.
Description
Technical field
The present invention relates to Wireless Telecom Equipment technical field, relate in particular to a kind of based on the Zigbee electronics price tag technology of communicating by letter with WiFi of communicating by letter.
Background technology
Merchandise news (price, the place of production, goods number etc.) in supermarket mostly adopts paper card to show.The display mode of this paper card is disposable use, all can relate to a large amount of replacings, and easily lose and misplace position when each merchandise news variation, produces unnecessary misunderstanding between businessman and client.Sometimes, while needing Discount Promotion, can not well embody.
Change in order to solve papery price tag the technical matters that numerous and diverse inconvenience is easily made mistakes when merchandise news, in industry, have people to propose electronic price tag label system.The Chinese patent that is CN202331560U as one piece of publication number discloses a kind of electronic price tag system for supermarkets, comprise: terminal control system, price tag display system, described terminal control system comprises Database Systems, for sending the wireless transmission system of marked price data, described price tag display system comprises and receives the wireless receiving system, the control module being connected with wireless receiving system output terminal of the marked price data that wireless transmission system sends, the electronic price tag label display screen of the demonstration marked price data that are connected with control module output terminal.Although this system can be reused, and has saved paper; But it is the concrete structure of unexposed terminal control system, price tag display system also, show that quantity is inadequate and adopt some conventional terminal control systems, price tag display system or exist, or have the high problem of price.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide a kind of cost low, merchandise news energy wireless transmission, colour show, and facilitate the supermarket electronics price tag system of unified management.
The present invention also provides electronics price tag main frame and the electronics price tag slave structure of above-mentioned supermarket electronics price tag system.
For reaching above object, the present invention adopts following technical scheme.
Electronics price tag main frame, is characterized in that, comprising: controller, the Zigbee communication module being connected with controller, WiFi communication module, Liquid Crystal Module, EEPROM module, FLASH module;
Described controller is the microcontroller with at least three interfaces, to meet and the communicating by letter and controller itself and extraneous communicating by letter of WiFi communication module and Zigbee communication module;
Described Zigbee communication module comprises: Zigbee download circuit and Zigbee operating circuit, be used for setting up Zigbee network;
Described WiFi communication module is used for setting up WiFi network;
Described Liquid Crystal Module is used for demonstration information the typing of receiving information;
Described EEPROM module comprises electrically-erasable chip, is used for title, the place of production, price, the number information of storing commodity;
Described FLASH module is used for carrying out the storage of character library and picture.
Improve as the one of above-mentioned electronics price tag main frame, described touch-screen is liquid crystal display touch screen, is connected with USB serial ports modular converter on controller, and this USB serial ports modular converter is used for realizing communicating by letter of controller and external data; On controller, be also connected with SD_CARD module, be used for increasing the memory capacity of electronics price tag main frame.
One as above-mentioned electronics price tag main frame is improved, controller, Zigbee communication module, WiFi communication module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter are all integrated on a circuit board and form lower floor, Liquid Crystal Module forms separately upper strata, uses 2 × 17 2.54mm arrange pin and arrange female connection between levels.
One as above-mentioned electronics price tag main frame is improved, and is provided with three LED light that are connected with controller, Zigbee communication module and WiFi communication module respectively on circuit board.
Electronics price tag slave, is characterized in that, comprising: controller, the Zigbee communication module being connected with controller, Liquid Crystal Module, EEPROM module, FLASH module and USB serial ports modular converter;
Described controller is microcontroller;
Described Zigbee communication module comprises: Zigbee download circuit and Zigbee operating circuit, be used for setting up Zigbee network;
Described Liquid Crystal Module is used for demonstration information the typing of receiving information;
Described EEPROM module comprises electrically-erasable chip, is used for title, the place of production, price, the number information of storing commodity;
Described FLASH module is used for carrying out the storage of character library and picture.
One as above-mentioned electronics price tag slave is improved, described touch-screen is that liquid crystal resistance shows touch-screen, on controller, be also connected with SD_CARD module, described controller, Zigbee communication module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter are all integrated on a circuit board and form lower floor, Liquid Crystal Module forms separately upper strata, uses 2 × 17 2.54mm arrange pin and arrange female connection between levels.
Electronics price tag system for supermarket, is characterized in that, comprising: upper computer, and at least one the electronics price tag main frame being connected with upper computer, is connected with multiple electronics price tag slaves on each electronics price tag main frame;
Described electronics price tag main frame comprises: controller and the Zigbee communication module being connected with controller, WiFi communication module, Liquid Crystal Module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter;
Described electronics price tag slave comprises: controller, the Zigbee communication module being connected with controller, Liquid Crystal Module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter.
Improve by the one of electronics price tag system as above-mentioned supermarket, the working method of described WiFi communication module is:
First,, to the initialization of WiFi communication module network configuration information, obtain network configuration information;
Then, enter mode of operation, carry out when socket is connected judging and responding with port numbers when there being upper computer expert to cross IP address;
In the time having the data of upper computer to arrive, be decrypted and unpack, and data retransmission after deciphering is unpacked is to controller;
In the time that controller has data to arrive, give upper computer according to IPV4 packet and encrypted transmission.
Improve by the one of electronics price tag system as above-mentioned supermarket, the working method of described Zigbee communication module is:
In the time that electronics price tag main frame need to send to certain electronics price tag slave data by Zigbee communication module, first Frame is write to UART3, at this time the CC2530 SOC (system on a chip) on electronics price tag main frame is carried out the data that receive the frame packing of Zstack protocol stack, then sends to electronics price tag slave;
In the time that the Zigbee communication module of electronics price tag main frame receives the Zigbee data that electronics price tag slave sends out, can decipher, separate frame, verification, then correct data are sent to controller processing by UART3.
Improve by the one of electronics price tag system as above-mentioned supermarket, the working method of described controller comprises:
1) Chinese character loads, and the character library of FLASH module loading is shown to Liquid Crystal Module;
2) reading out data, reads title, price, numbering, the place of production information of commodity in EEPROM module, then corresponding information is updated in Liquid Crystal Module, completes the complete demonstration of merchandise news;
3) monitoring of data interaction, it is mutual whether monitoring Zigbee communication module has data to need, and whether whether it is mutual whether monitoring WiFi communication module has data to need, have data need to write in EEPROM module and go, have data to carry out alternately with FLASH module.
A kind of electronics price tag main frame provided by the invention, adopt WiFi communication module and Zigbee communication module to carry out the transmission of wireless messages, adopt Liquid Crystal Module to carry out information demonstration, the disposable use of solution paper labels, replacing easily make mistakes, demonstration information is single, the problems such as easy loss; Meanwhile, the combination of WiFi communication module and Zigbee communication module, effectively controls the manufacturing cost of electronics price tag main frame.
A kind of electronics price tag slave provided by the invention, adopts Zigbee communication module to realize and the communicating by letter of electronics price tag main frame, have simple in structure, the advantage of low cost of manufacture.
A kind of supermarket provided by the invention has following beneficial effect by electronics price tag system:
One, between electronics price tag main frame and electronics price tag slave, use Zigbee communication, between electronics price tag main frame and upper computer, use WiFi to carry out the wireless transmission of merchandise news, and carry out display of commodity information with Liquid Crystal Module, the disposable use of solution paper labels, replacing easily make mistakes, demonstration information is single, the problems such as easy loss.
Two, Zigbee communication is the New-type radio communication technology based on 2.4G, has the advantages such as low rate, low-power consumption, low cost, MANET, encrypted transmission, transmission be reliable; Meanwhile, the address assignment in Zigbee protocol stack can reach 65535 to add that exclusive communication channel divides be to meet supermarket demand completely.
The advantages such as three, WiFi communication is also the wireless communication technique based on 2.4G, has transfer rate high, and transmitted data amount is large, transmission quality is reliable; Meanwhile, the IPV4 protocol stack using in WiFi chip can directly be connected with internet, and IP address and subnet mask can well be divided network by section.
Accompanying drawing explanation
Figure 1 shows that electronics price tag main machine structure schematic diagram provided by the invention;
Figure 2 shows that electronics price tag slave structural representation provided by the invention;
Figure 3 shows that supermarket provided by the invention electronics price tag system architecture schematic diagram;
Figure 4 shows that supermarket provided by the invention electronics price tag working-flow figure.
Description of reference numerals:
1, upper computer, 2, electronics price tag main frame, 3, electronics price tag slave.
Embodiment
Understand better essence of the present invention for convenience of those of ordinary skills, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Electronics price tag host implementation example
As shown in Figure 1, a kind of electronics price tag main frame comprises: controller and the Zigbee communication module being connected with controller, WiFi communication module, Liquid Crystal Module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter.
Wherein, what described controller adopted is 32 chips of STM32F103RBT6, and this chip has the advantages such as performance is good, price is low, applied widely.This chip has 3 road serial ports and can meet and WiFi communication module, Zigbee communication module and chip itself and extraneous communicating by letter simultaneously.The external low speed crystal oscillator of this chip and high speed crystal oscillator, so just can produce low-speed clock and high-frequency clock simultaneously, meets according to actual needs the balance of power consumption and performance.This chip comes and SD_CARD module and FLASH module interactive information by SPI sequential interface and different chip selection signals, can provide as required different storage spaces to meet the storage to some fonts, image etc.The IIC communication of this chip can be carried out information interaction with EEPROM module well, reads as required and revise the specifying information of commodity.This chip operates LCD MODULE by SPI sequential interface and 16 position datawires, and obtains on screen, whether there is input information by read signal simultaneously.Each IO pin of this chip can be served as interruption simultaneously, can respond well like this information processing of peripheral hardware.
Described Zigbee communication module comprises: CC2530 SOC (system on a chip), Zigbee download circuit and Zigbee operating circuit.Zigbee download circuit is connected with CC2530 chip by CC_Debug interface, and both adopt SPI sequential to carry out information interaction, facilitate download and the debugging of program.Zigbee operating circuit and controller chip STM32F103RBT6 carry out data interaction.CC2530 SOC (system on a chip) and controller chip STM32F103RBT6 interactive mode are UART communication.
Described WiFi communication module is HLK_RM04 module, this HLK_RM04 module has low-power consumption, the advantages such as transmission range is good, price material benefit, and can by the browser of PC be configured to as required AP, client, server, etc. facilitate networking and be connected to internet.In the time that WiFi communication module is arranged to ap mode, he can create a WiFi LAN (Local Area Network), allows other network equipments to add to come in, by ICP/IP protocol communication.After being each WiFi devices allocation good IP address and port numbers, upper computer just can carry out data interaction according to IP address and port numbers, receive the TCP/IP packet from host computer, then unpack verification, finally correct data are sent to STM32 by UART2, then STM32 makes corresponding processing according to instruction.
Described Liquid Crystal Module is that 2.8 cun of TFT liquid crystal resistance show touch-screens, not only can show information but also can receive the input of screen, information is passed to controller chip STM32F103RBT6 and process.2.8 cun of TFT liquid crystal resistance show touch-screen and controller chip STM32F103RBT6 information interaction use be 16 position datawires and SPI sequential.On 2.8 cun of TFT liquid crystal resistance demonstration touch screen circuitry plates, adopted XPT2046 chip, this chip is mainly X-direction and the Y direction of controlling screen coordinate system, then coordinates with 16 position datawires and carries out the control of colored point and obtaining of touch point.In other embodiments, 2.8 cun of TFT liquid crystal resistance show that touch-screen adopts other liquid crystal displays with hand-write input function to substitute, and is not limited to the present embodiment.
What described EEPROM module adopted is the electrically-erasable chip of AT24C02.This chip-stored size is 256KB, is mainly used in these information such as storing commodity title, the commodity place of production, commodity price, goods number.Between this chip and controller chip STM32F103RBT6, carry out communication by IIC, wherein IIC_SCL be responsible for both clock control and IIC_SDA for the transmission of data.
The storage chip of described FLASH module is W25X16, and this FLASH storage chip size is 2MB, can meet the picture that the storage of GBK character library and needs show and also can leave in this chip block.This storage chip is connected with controller chip STM32F103RBT6 by SPI sequential, and controller chip STM32F103RBT6 just can carry out the read-write operation to this FLASH by the chip selection signal of FLASH and the SPI sequential between them like this.Be limited because this FLASH only has 2M size canned data, in the time of the more things of needs storage, we just can realize with external SD card.
Described SD_CARD module refers to SD card storage area, and we reserve this part is SD cutting ferrule, can be equipped with as required the SD storage cards of different sizes.Between SD card and controller chip STM32F103RBT6, be also to carry out communication by SPI sequential.In the time that the chip selection signal of controller chip STM32F103RBT6 is selected SD card, just can read according to SPI sequential the information of SD card the inside.This SD card can use as required, and in the time that needs show a lot of different big or small fonts and plurality of pictures, the FLASH of 2M deposits and fails to lay down, and at this time must use external SD card and realize.
What described USB serial ports modular converter adopted is that PL2303 serial ports turns USB chip, is mainly used for controller chip STM32F103RBT6 and computer and carries out download and the communication of data by serial ports, and coordinate automatic download circuit to realize a key download.In the time that needs download controller chip STM32F103RBT6, USB mouth and USB downloading wire are coupled together like this, the executable program that the download software that coordinates upper computer can be just " .hex " by suffix downloads in STM32F103RBT6.
Need for attractive in appearance and practical, in the time of actual design, controller, Zigbee communication module, WiFi communication module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter are all integrated on a circuit board and form lower floor, Liquid Crystal Module forms separately upper strata, uses 2 × 17 2.54mm arrange pin and arrange female connection between levels.
Understand for the convenience of the user the duty of electronics price tag main frame, on circuit board, be also provided with three LED light that are connected with controller, Zigbee communication module and WiFi communication module respectively, be used to refer to respectively power supply status, the Zigbee communication transmission state signal of mould and the transmission state signal of WiFi communication module.
Electronics price tag slave embodiment
A kind of electronics price tag slave comprises: controller, the Zigbee communication module being connected with controller, Liquid Crystal Module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter.
A kind of electronics price tag slave that the present embodiment provides, the structure of itself and electronics price tag main frame is basically identical, difference is: electronics price tag slave has been removed WiFi communication module, and not with compunlcation, only by Zigbee communication module and electronics price tag main-machine communication.
Be subject to the control of IP address and cost and considering of transmission information amount, between electronics price tag main frame and electronics price tag slave, adopt Zigbee communication module to carry out the wireless transmission of information.This transmission is equally also based on 2.4G frequency range, anti-interference better, adopts 802.15.4 agreement can guarantee the quality of data transmission and the convenience of networking simultaneously.Because Zigbee network can not be mutual with internet, we are by the convergence of slave to main frame like this, and main frame re-uses WiFi and our internet is mutual, so just makes us can carry out data interaction with our host computer by each slave.
In the time that electronics price tag slave need to send data, data are write UART3 by controller chip STM32F103RBT6, at this time Zigbee, by data through verification, adds that then check code is transmitted to electronics price tag main frame according to the Zigbee agreement of oneself through electromagnetic oscillation circuit.After the CC2530 SOC (system on a chip) of electronics price tag main frame receives data, after process solution frame and data check are correct, then the controller chip STM32F103RBT6 that sends to electronics price tag main frame by UART3, then make corresponding processing according to command frame.
Electronics price tag system embodiment for supermarket
As shown in Figure 3, electronics price tag system for a kind of supermarket, comprising: upper computer 1, with at least one electronics price tag main frame 2 that upper computer 1 communicates to connect, on each electronics price tag main frame 2, communication link is connected to multiple electronics price tag slaves 3.
Wherein, the structure of described electronics price tag main frame 2 is consistent with the structure of describing in above-mentioned electronics price tag host implementation example, comprise: controller and the Zigbee communication module being connected with controller, WiFi communication module, Liquid Crystal Module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter.
The structure of described electronics price tag slave 3 is consistent with the structure of describing in above-mentioned electronics price tag slave embodiment, comprise: controller, the Zigbee communication module being connected with controller, Liquid Crystal Module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter.
As shown in Figure 4, when real work, the WiFi communication module of motor price tag main frame, Zigbee communication module and controller workflow are as follows:
First WiFi communication module carries out initialization after starting, and this initialization section is most important is the initialization to this WiFi communication module network configuration information.Say that being this WiFi communication module can carry out detailed configuration as required by browser above, after configuring, after each WiFi chip power, will remove to read this configuration information, then according to the corresponding equipment of this configuration information initialization, can work normally according to user's configuration information.After completing, initialization will obtain network configuration information.The network configuration information in this time refers to which network segment is this WiFi communication module need to connect as, and IP address in this network segment, subnet mask, DNS etc. are how many.If the network configuration information that this WiFi communication module is obtained correctly so this WiFi communication module will enter mode of operation.In mode of operation, this WiFi communication module mainly completes reception and the transmission of WiFi data.Carry out when socket is connected judging in time and responding with port numbers when there being upper computer expert to cross IP address; In the time having upper computer data to arrive, to decipher and unpack in time, and be transmitted to controller chip processing; In the time that controller chip has data to arrive again according to IPV4 packet and encrypted transmission to upper computer.
After powering on, Zigbee communication module first the chip of CC2530 SOC (system on a chip) is carried out to radio frequency initialization.This partially-initialized is mainly Physical layer to 802.15.4 agreement and the initialization of MAC layer, such as MAC Address, radio transmitted power etc.After completing, this partially-initialized will enter the configuration of network layer.This part is mainly obtaining and broadcasting of Zigbee network numbering, and allows other Zigbee terminal nodes to add to have come in the networking of Zigbee network.If CC2530 SOC (system on a chip) will enter mode of operation after getting network numbering success.It in this mode of operation, is mainly the transmitting-receiving of carrying out Zigbee data.In the time that electronics price tag main frame need to send to certain electronics price tag slave data by Zigbee communication module, first Frame is write to UART3, at this time CC2530 SOC (system on a chip) is packed the data that receive through the frame of Zstack protocol stack, after then encrypting as required, sends to electronics price tag slave.In the time that Zigbee communication module receives the Zigbee data that electronics price tag slave sends out, can decipher, separate frame, verification, then correct data are sent to controller processing by UART3.
After controller chip STM32F103RBT6 powers on, first this chip and relevant peripheral hardware are carried out to initialization, this initialization is mainly concerned with the selection of crystal oscillator frequency, the output of IO pin clock, interrupt map etc.After controller chip initialization completes, just can go FLASH module loading character library, select according to demand corresponding Chinese character to prepare to write 2.8 cun of TFT and show in liquid crystal chip, show.After having loaded, the Chinese character of FLASH module just LCDs is carried out to initialization.LCDs is being carried out to initial phase, relating generally to liquid crystal backlight lighteness, touch screen calibration etc.Complete after LCDs initialization, the character library of FLASH module loading is shown to LCD screen.And then controller chip reads the configuration informations such as the title, price, numbering, the place of production of commodity in EEPROM module, then by configuration information update in LCDs, complete the complete demonstration of merchandise news.Whether finally, controller chip enters monitoring mode, and whether monitoring Zigbee communication module has data, and whether whether WiFi communication module has data, have data need to write in EEPROM module and go, have data to carry out mutual etc. with FLASH module.
And the workflow of electronics price tag slave and electronics price tag main frame are basically identical, difference is:
One, because electronics price tag slave does not have WiFi communication module, so can not relate to the workflow of WiFi communication module.
What two, in the CC2530 chip in Zigbee communication module, download is Zigbee terminal node program, therefore can only obtain the network numbering that the Zigbee communication module of electronics price tag main frame sends out, to oneself join in this network, obtain the network address, can carry out Zigbee communication by this network address.
Above embodiment has been described in detail essence of the present invention, but can not limit protection scope of the present invention with this.Apparently, under the enlightenment of essence of the present invention, the art those of ordinary skill also can carry out many improvement and modification, within it should be noted that these improvement and modification all drop on claim protection domain of the present invention.
Claims (10)
1. electronics price tag main frame, is characterized in that, comprising: controller, the Zigbee communication module being connected with controller, WiFi communication module, Liquid Crystal Module, EEPROM module, FLASH module;
Described controller is the microcontroller with at least three interfaces, to meet and the communicating by letter and controller itself and extraneous communicating by letter of WiFi communication module and Zigbee communication module;
Described Zigbee communication module comprises: Zigbee download circuit and Zigbee operating circuit, be used for setting up Zigbee network;
Described WiFi communication module is used for setting up WiFi network;
Described Liquid Crystal Module is used for demonstration information the typing of receiving information;
Described EEPROM module comprises electrically-erasable chip, is used for title, the place of production, price, the number information of storing commodity;
Described FLASH module is used for carrying out the storage of character library and picture.
2. electronics price tag main frame according to claim 1, is characterized in that, is connected with USB serial ports modular converter on controller, and this USB serial ports modular converter is used for realizing communicating by letter of controller and external data; On controller, be also connected with SD_CARD module, be used for increasing the memory capacity of electronics price tag main frame.
3. electronics price tag main frame according to claim 2, it is characterized in that, controller, Zigbee communication module, WiFi communication module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter are all integrated on a circuit board and form lower floor, Liquid Crystal Module forms separately upper strata, uses 2 × 17 2.54mm arrange pin and arrange female connection between levels.
4. electronics price tag main frame according to claim 3, is characterized in that, is provided with three LED light that are connected with controller, Zigbee communication module and WiFi communication module respectively on circuit board.
5. electronics price tag slave, is characterized in that, comprising: controller, the Zigbee communication module being connected with controller, Liquid Crystal Module, EEPROM module, FLASH module and USB serial ports modular converter;
Described controller is microcontroller;
Described Zigbee communication module comprises: Zigbee download circuit and Zigbee operating circuit, be used for setting up Zigbee network;
Described Liquid Crystal Module is used for demonstration information the typing of receiving information;
Described EEPROM module comprises electrically-erasable chip, is used for title, the place of production, price, the number information of storing commodity;
Described FLASH module is used for carrying out the storage of character library and picture.
6. electronics price tag slave according to claim 5, it is characterized in that, described touch-screen is liquid crystal display touch screen, on controller, be also connected with SD_CARD module, described controller, Zigbee communication module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter are all integrated on a circuit board and form lower floor, Liquid Crystal Module forms separately upper strata, uses 2 × 17 2.54mm arrange pin and arrange female connection between levels.
7. electronics price tag system for supermarket, is characterized in that, comprising: upper computer, and at least one the electronics price tag main frame being connected with upper computer, is connected with multiple electronics price tag slaves on each electronics price tag main frame;
Described electronics price tag main frame comprises: controller and the Zigbee communication module being connected with controller, WiFi communication module, Liquid Crystal Module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter;
Described electronics price tag slave comprises: controller, the Zigbee communication module being connected with controller, Liquid Crystal Module, EEPROM module, FLASH module, SD_CARD module and USB serial ports modular converter.
8. electronics price tag system for supermarket according to claim 7, is characterized in that, the working method of described WiFi communication module is:
First,, to the initialization of WiFi communication module network configuration information, obtain network configuration information;
Then, enter mode of operation, carry out when socket is connected judging and responding with port numbers when there being upper computer expert to cross IP address;
In the time having the data of upper computer to arrive, be decrypted and unpack, and data retransmission after deciphering is unpacked is to controller;
In the time that controller has data to arrive, give upper computer according to IPV4 packet and encrypted transmission.
9. electronics price tag system for supermarket according to claim 7, is characterized in that, the working method of described Zigbee communication module is:
In the time that electronics price tag main frame need to send to certain electronics price tag slave data by Zigbee communication module, first Frame is write to UART3, at this time the CC2530 SOC (system on a chip) on electronics price tag main frame is carried out the data that receive the frame packing of Zstack protocol stack, then sends to electronics price tag slave;
In the time that the Zigbee communication module of electronics price tag main frame receives the Zigbee data that electronics price tag slave sends out, can decipher, separate frame, verification, then correct data are sent to controller processing by UART3.
10. electronics price tag system for supermarket according to claim 7, is characterized in that, the working method of described controller comprises:
1) Chinese character loads, and the character library of FLASH module loading is shown to Liquid Crystal Module;
2) reading out data, reads title, price, numbering, the place of production information of commodity in EEPROM module, then corresponding information is updated in Liquid Crystal Module, completes the complete demonstration of merchandise news;
3) monitoring of data interaction, it is mutual whether monitoring Zigbee communication module has data to need, and whether whether it is mutual whether monitoring WiFi communication module has data to need, have data need to write in EEPROM module and go, have data to carry out alternately with FLASH module.
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| CN201410024023.6A CN103793825A (en) | 2014-01-18 | 2014-01-18 | Electronic label host, electronic label slave machine and electronic label system for supermarket |
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| CN201410024023.6A CN103793825A (en) | 2014-01-18 | 2014-01-18 | Electronic label host, electronic label slave machine and electronic label system for supermarket |
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