CN209149340U

CN209149340U - A kind of adaptability wider array of electronics price tag base station

Info

Publication number: CN209149340U
Application number: CN201920133441.7U
Authority: CN
Inventors: 冯智焘; 陈锦成; 杨华伟; 伍平亮
Original assignee: Yaliang Business Intelligence Technology (guangzhou) Co Ltd
Current assignee: Yaliang Business Intelligence Technology (guangzhou) Co Ltd
Priority date: 2019-01-25
Filing date: 2019-01-25
Publication date: 2019-07-23
Anticipated expiration: 2029-01-25

Abstract

The utility model discloses a kind of adaptability wider array of electronics price tag base stations, it include controller, power supply module and communication part, communication part includes ethernet module, 2.0 module of USB and USART module, ethernet module is docked with server, and 2.0 module of USB and USART module are docked with node price tag respectively；The chip U10 model USB2514B of 2.0 module of interface chip U7 model RTL8211E, USB of ethernet module.The novel ethernet module of the utility model is communicated by http protocol and server, is docked by serial ports with radio-frequency module and is realized master data forwarding capability, increased equipment plug-and-play feature, improve the convenience that user uses；By provide general-purpose interface may be implemented in backplane hardware design it is constant on the basis of, replace corresponding module according to the following different demands and be adapted to, while software heat more new interface and debugging interface being provided and realize that the long-range of base station program updates and positioning problems function.

Description

A kind of adaptability wider array of electronics price tag base station

Technical field

The utility model relates to the base stations in electronics price tag systems technology field more particularly to electronics price tag system.

Background technique

Electronics price tag system is a kind of environmentally friendly, efficient price display systems, it is by node, base station and the big portion of server three It is grouped as.Node, that is, display terminal, is generally made of ink screen and communication controller, and each node physically forms self-enclosed Structure, node have low energy consumption, the requirement of high flexibility, determine that it can only generally be powered using independent battery, and therefore, node needs It to rely on and be deployed in the extension that local base station carries out data transmission.The base station processor collocation corresponding communication slightly strong by performance On the one hand module composition, base station form low-speed local area network with one or more nodes in particular range, on the other hand pass through net Line or other physical connection modes access stable, high speed communication network, carry out data exchange with server, it can be seen that such System needs to be arranged networking transfer of the base station as LAN node in which all not can avoid.

For different system architectures, base station end has different hardware and Technology Selection, as used in price tag node Low speed radio-frequency communication mode BLE, Zigbee, LoRa etc. are generally realized that base station end is necessarily required to assist using with it by certain chip It discusses matched chip and makees transceiver, after master controller only needs the data packet uploaded to node to handle, forwarded by wide area network To server, and the response data packet returned to server carries out processing and is issued to node.Data processing and occur in application layer, Chip chamber is carried out data transmission by Peripheral Interface, and master control load less, is realized for cost consideration part and uses system resource Limited main control chip.However such chip is generally directed to fixed framework and agreement, when system needs to add specific function When, it can not be extended and update in the case where being changed without hardware.

In face of different demands, agreement selected by bottom may need to be adjusted, but the interface of chip chamber develops Speed relatively more slowly, thus base station design when general-purpose interface is only provided, according to different application scene select disparate modules It is accessed, can be matched in the case where not influencing its integrated circuit layout.

For Intelligent hardware, the heat of system and application software, which updates, to be particularly important.In face of growing soft Part demand, software is carried on hardware can not can be carried out that BUG is repaired or characteristic is introduced without iteration update, optionally in factory journey Sequence reserves more new interface and provides possibility for remote upgrade function.Simultaneously, it is necessary to effective problem feedback and debugging mechanism are established, Problem can be quickly located in the case where program goes wrong, and repaired and updated in time.Base station, which networks, need to only guarantee net Line connection is normal, and base station automatically configures related network information, while providing the interface of manual configuration, to meet advanced level user Configuration mode.However, the base station of electronics price tag system is clearly to compare shortage in terms of above-mentioned function at present.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of conveniences that user can be improved and use, can be according to future Different demands replacement corresponding module is adapted to, is able to achieve the wider array of electronics price tag base of the adaptability remotely updated of base station program It stands.

In order to solve the above technical problems, the utility model adopts the following technical solution: a kind of wider array of electrovalence of adaptability Base station is signed, includes controller, power supply module and communication part, power supply module access controller is to provide electric energy, communication part It is connect with controller；It is characterized by: communication part includes ethernet module, 2.0 module of USB and USART module, ether Net module is docked with server, and 2.0 module of USB and USART module are docked with node price tag respectively；The interface of ethernet module Chip U7 model RTL8211E, chip U7 are connected with RJ45 interface by the GMAC_TRX signal wire of four groups of difference, with control It is connected between device MAC by two group interface GMAC_TX and GMAX_RX, VCC3P3_PHY pin is provided by peripheral hardware power supply module Power supply, and its VCC1P05_PHY pin is exported through REGOUT_PHY by chip interior voltage transformation module and provides power supply；USB Chip U10 the model USB2514B, chip U10 of 2.0 modules are connected between controller by one group of differential lines USB_HOST_D It connects, the data from controller is forwarded to corresponding price tag node, USBHUB_RST pin by four groups of differential lines D1-D4 The USB reset pin for connecting controller is initialized for USB；The pressure stabilizing of the VCC3P3 pin and peripheral hardware power supply module of chip U10 Output connects, and provides the operating voltage of chip U10.

The work clock of chip U7 is made of external 24MHz crystal oscillator and matching load capacitance and load resistance, core Piece operating mode is configured by three pins, i.e. pin SELREV, pin AIN0 and pin AIN1, and mode is chosen to be GMII/RGMII auto-negotiation operating mode.

The work clock of chip U10 is provided by external 24MHz crystal oscillator, load resistance and load capacitance, passes through chip U10's CRFLT pin and the external filter capacitor of PLLFLT pin are to guarantee the stability of internal circuit.

The power supply module includes main power supply Voltage stabilizing module and main supply voltage conversion module, main power supply Voltage stabilizing module Input terminal is connected with adapter or PoE power supply output, and self-recovery fuse F1 forms overcurrent protection structure, zener diode D3 Form 5V structure of voltage regulation；The model FDS4435 of element U1 manages for P-channel MOSFET, forms with triode Q1 main for electricity output Control, when main supply voltage is excessively high, triode Q1 is pulled to low level and open-minded by resistance R4, makes collector and emitter phase Logical, the source electrode and grid voltage difference of MOSFET pipe U1 is less than conducting voltage, and drain electrode output shutdown protects subsequent conditioning circuit not to be damaged； When main supply voltage is normal, triode Q1 is turned off, and the source and drain interpolar normally of MOSFET pipe U1 is main normal for electricity output.

The main supply voltage conversion module is divided into processor core power supply module and peripheral hardware power supply module, core power supply mould Block is formed by synchronizing transformation converter U5 and feed circuit；Model TPS5432, the VIN pin of synchronous transformation converter U5 The out-put supply of main power supply Voltage stabilizing module is connect, EN pin is that chip enables pin, the output after voltage output VBAT+ is converted Synchronous transformation is fed back to by VSENSE pin through divider resistance R14, divider resistance R40, divider resistance R41 and capacitor C130 to convert Device U5 forms stable voltage output, provides core power supply for processor.

Peripheral hardware power supply module uses AMS1117 low dropout regulator for ethernet module interface chip U7 and USB2.0 module Chip U10 provides power supply, and the output end that VIN pin connects main power supply Voltage stabilizing module provides power input, and ADJ pin passes through electricity Resistance R141 and R142 divides to form feedback regulation, by select resistance value appropriate make low dropout regulator VOUT pin stablize it is defeated 3.3V voltage out.

Controller has linux system as general bottom most software, support USART, USB, TCP/IP using deployment customized The multi-core processor in library is communicated, S5P4418 can be selected in model.

Base station enters Booting sequence after powering on, and successively opens by Bootloader, linux system initialization and main program It is in running order after dynamic three steps.Wherein the initialization of ethernet module, USB module and USART interface module occurs System initialisation phase, when cable normal ON, system automatically configures the relevant network information by built-in script, into work The serial ports for making AM access module after state is kept open the data packet for preparing processing node request.

When patching radio-frequency module onboard and receiving from the legal data packet of price tag node, data packet is solved Analysis.When main program receives the request for updating display information, the display of corresponding price tag is requested to server by http protocol Information, when there is information to be refreshed, main program is sent to price tag node in the inside of base station memory buffer information The notice for having information to need to refresh, price tag successively show the subpackage of information to base station requests.

Price tag receives all display information, refreshes after completing and sends the notice for refreshing and completing to base station, base station receives After be forwarded to server, display information that mark this time updates successfully refreshes, that is, completes one and show the process issued.

When multiple price tags request to update display information simultaneously, base station end can be according to the upper of respective modules channel and data packet Context information issues correct data packet, realizes multiple price tag nodes while updating.

The novel ethernet module of the present invention is communicated by http protocol and server, is docked by serial ports with radio-frequency module It realizes master data forwarding capability, increases equipment plug-and-play feature, improve the convenience that user uses；It is logical by providing With interface may be implemented in backplane hardware design it is constant on the basis of, according to the following different demands replace corresponding module be adapted to, Software heat more new interface is provided simultaneously and debugging interface realizes the long-range update and positioning problems function of base station program, to also mention The high adaptability of base station.

Detailed description of the invention

Fig. 1 is the utility model functional block diagram；

Power supply Voltage stabilizing module circuit diagram based on Fig. 2；

Fig. 3 is processor core power supply module circuit diagram；

Fig. 4 is peripheral hardware power supply module circuit diagram；

Fig. 5 is Ethernet chip circuit diagram；

Fig. 6 is Ethernet chip work clock circuit；

Fig. 7 is 2.0 chip circuit figure of USB；

Fig. 8 is 2.0 chip operation clock circuit of USB.

Specific embodiment

It include control referring to Fig.1, Fig. 5 and Fig. 7, adaptability wider array of electronics price tag base station in the present embodiment Device, power supply module and communication part, to provide electric energy, communication part is connect power supply module access controller with controller；It is special Sign is: communication part includes ethernet module, 2.0 module of USB and USART module, ethernet module and server pair It connects, 2.0 module of USB and USART module are docked with node price tag respectively；The interface chip U7 model of ethernet module RTL8211E, chip U7 are connected with RJ45 interface by the GMAC_TRX signal wire of four groups of difference, are passed through between controller MAC Two group interface GMAC_TX and GMAX_RX be connected, VCC3P3_PHY pin by peripheral hardware power supply module provide power supply, and its VCC1P05_PHY pin is exported through REGOUT_PHY by chip interior voltage transformation module and provides power supply；The core of 2.0 module of USB Piece U10 model USB2514B, chip U10 are connected between controller by one group of differential lines USB_HOST_D, automatic control in future The data of device processed are forwarded to corresponding price tag node by four groups of differential lines D1-D4, and USBHUB_RST pin connects controller USB reset pin, for USB initialize；The VCC3P3 pin of chip U10 connects with the pressure stabilizing of peripheral hardware power supply module output, The operating voltage of chip U10 is provided.

Referring to Fig. 6, the work clock of chip U7 is by external 24MHz crystal oscillator and matching load capacitance and load resistance Composition, chip operation mode are configured by three pins, i.e. pin SELREV, pin AIN0 and pin AIN1, mode choosing It is set to GMII/RGMII auto-negotiation operating mode.

Referring to Fig. 8, the work clock of chip U10 is provided by external 24MHz crystal oscillator, load resistance and load capacitance, is passed through The CRFLT pin and the external filter capacitor of PLLFLT pin of chip U10 is to guarantee the stability of internal circuit.

Referring to Fig. 2, the power supply module includes main power supply Voltage stabilizing module and main supply voltage conversion module, and main power supply is steady The input terminal of die block is connected with adapter or PoE power supply output, and self-recovery fuse F1 forms overcurrent protection structure, pressure stabilizing Diode D3 forms 5V structure of voltage regulation；The model FDS4435 of element U1 manages for P-channel MOSFET, forms and leads with triode Q1 It is controlled for electricity output, when main supply voltage is excessively high, triode Q1 is pulled to low level and open-minded by resistance R4, makes collector and hair Emitter-base bandgap grading communicates, and the source electrode and grid voltage difference of MOSFET pipe U1 is less than conducting voltage, and drain electrode output shutdown protects subsequent conditioning circuit not It is impaired；When main supply voltage is normal, triode Q1 is turned off, and the source and drain interpolar normally of MOSFET pipe U1 is main for electricity output Normally.

Referring to Fig. 3 and Fig. 4, the main supply voltage conversion module is divided into processor core power supply module and peripheral hardware power supply mould Block, core power supply module are formed by synchronizing transformation converter U5 and feed circuit；The model of synchronous transformation converter U5 TPS5432, VIN pin connect the out-put supply of main power supply Voltage stabilizing module, and EN pin is that chip enables pin, voltage output Output after VBAT+ is converted is drawn through divider resistance R14, divider resistance R40, divider resistance R41 and capacitor C130 by VSENSE Foot feeds back to synchronous transformation converter U5 and forms stable voltage output, provides core power supply for processor.

The utility model is described in detail above, it is described above, only the preferred embodiment of the utility model and , when the utility model practical range cannot be limited, i.e., all according to the made equivalent changes and modifications of the application range, it should still belong to this In utility model covering scope.

Claims

1. a kind of adaptability wider array of electronics price tag base station, includes controller, power supply module and communication part, power supply module connects Enter controller to provide electric energy, communication part is connect with controller；It is characterized by: communication part include ethernet module, 2.0 module of USB and USART module, ethernet module are docked with server, 2.0 module of USB and USART module respectively with section Point price tag docking；Interface chip U7 the model RTL8211E, chip U7 and RJ45 interface of ethernet module pass through four groups of difference GMAC_TRX signal wire be connected, be connected between controller MAC by two group interface GMAC_TX and GMAX_RX, VCC3P3_PHY pin provides power supply by peripheral hardware power supply module, and its VCC1P05_PHY pin is by chip interior voltage modulus of conversion Block exports through REGOUT_PHY and provides power supply；Chip U10 the model USB2514B, chip U10 and controller of 2.0 module of USB Between be connected by one group of differential lines USB_HOST_D, the data from controller are forwarded to by four groups of differential lines D1-D4 Corresponding price tag node, USBHUB_RST pin connect the USB reset pin of controller, initialize for USB；Chip U10 The pressure stabilizing output of VCC3P3 pin and peripheral hardware power supply module connect, the operating voltage of chip U10 is provided.

2. the wider array of electronics price tag of adaptability according to claim 1 base station, it is characterised in that: the work clock of chip U7 It is made of external 24MHz crystal oscillator and matching load capacitance and load resistance, chip operation mode is by three pins, i.e., Pin SELREV, pin AIN0 and pin AIN1 are configured, and mode is chosen to be GMII/RGMII auto-negotiation operating mode.

3. the wider array of electronics price tag of adaptability according to claim 1 base station, it is characterised in that: when the work of chip U10 Clock by external 24MHz crystal oscillator, load resistance and load capacitance provide, by the CRFLT pin and PLLFLT pin of chip U10 outside Filter capacitor is connect to guarantee the stability of internal circuit.

4. the wider array of electronics price tag of adaptability according to claim 1 base station, it is characterised in that: the power supply module includes There are main power supply Voltage stabilizing module and main supply voltage conversion module, the input terminal and adapter or PoE of main power supply Voltage stabilizing module are powered Output is connected, and self-recovery fuse F1 forms overcurrent protection structure, and zener diode D3 forms 5V structure of voltage regulation；Element U1's Model FDS4435 manages for P-channel MOSFET, main for electricity output control with triode Q1 composition, when main supply voltage is excessively high When, triode Q1 is pulled to low level and open-minded by resistance R4, communicates collector with emitter, the source electrode and grid of MOSFET pipe U1 Pole tension difference is less than conducting voltage, and drain electrode output shutdown protects subsequent conditioning circuit not to be damaged；When main supply voltage is normal, three poles Pipe Q1 shutdown, the source and drain interpolar normally of MOSFET pipe U1 are main normal for electricity output.

5. the wider array of electronics price tag of adaptability according to claim 4 base station, it is characterised in that: the main supply voltage turns Mold changing block is divided into processor core power supply module and peripheral hardware power supply module, and core power supply module is by synchronizing transformation converter U5 and anti- Current feed circuit composition；Model TPS5432, the VIN pin of synchronous transformation converter U5 connects the output electricity of main power supply Voltage stabilizing module Source, EN pin are that chip enables pin, and the output after voltage output VBAT+ is converted is through divider resistance R14, divider resistance R40, divider resistance R41 and capacitor C130 by VSENSE pin feed back to synchronous transformation converter U5, and to form stable voltage defeated Out, core power supply is provided for processor.

6. the wider array of electronics price tag of adaptability according to claim 5 base station, it is characterised in that: peripheral hardware power supply module uses AMS1117 low dropout regulator provides power supply for 2.0 module chip U10 of ethernet module interface chip U7 and USB, and VIN draws The output end that foot connects main power supply Voltage stabilizing module provides power input, and ADJ pin divides to be formed instead by resistance R141 and R142 Feedback is adjusted, and stablizes output 3.3V voltage by the VOUT pin for selecting resistance value appropriate to make low dropout regulator.

7. the wider array of electronics price tag of adaptability according to claim 1 base station, it is characterised in that: controller is fixed using deployment Linux system is formed with as general bottom most software, the multi-core processor in support USART, USB, TCP/IP communication library, model For S5P4418.