CN205861194U - Intelligent tracing electronic scale - Google Patents

Abstract

nullThis utility model intelligent tracing electronic scale belongs to meat、Fresh、Fruit and vegerable、Various household supplies eat articles for use weigh transaction and measurement instrument field，Intelligent tracing electronic scale is by CPU processor circuit、Pressure transducer A/D convertor circuit、WIFI module、RFID radio frequency identification module interface、Thermal printer interface、Keyboard interface、LCD shows interface、USB interface、RJ45 network interface、RS232 interface、Power circuit forms，This utility model each functional circuit simple in construction，Stable performance，Install and observation is convenient，Use high-performance ARM9 architecture processor，Powerful linux operating system，Collection is weighed、Display、Networking、Real-name authentication、Pay by mails、Data upload function is in one，Food information typing can be realized、Transmission、Record food security information、Transaction Information，And send electronic transaction information and print quality to consumer and trace to the source voucher，Inquiry terminal machine can be passed through by this card consumer、The Internet、Mobile phone short messages，Inquire about oneself bought food quality the most qualified，Can be widely applied to business surpass、The market of farm produce、Fruit and vegerable market、Seafood marine industry.

Description

Intelligent tracing electronic scale

Technical field

This utility model intelligent tracing electronic scale belongs to meat, fresh, the edible use of fruit and vegerable, various household supplies Product are weighed and are concluded the business and measurement instrument field.

Background technology

In recent years, China's food safety affair happens occasionally, and has caused consumers in general's Generally worry and the extensive concern of various circles of society.Each province and city, each ministries and commissions, each manufacturing enterprise are being supported Grow, plant, produce, circulate, the link such as sale sets up food and agricultural product quality and safety is reviewed System.Intelligent tracing electronic scale becomes key one ring that the circulation of meat dish is reviewed in system, intelligence Review electronic scale collection to weigh, show, network, real-name authentication, E-Payment, pass on Gong in data Can in one terminal unit, by docking with technology of Internet of things, can realize food information typing, Transmission, record food security information, Transaction Information, and send electronic transaction information to consumer Trace to the source voucher with print quality, by this card consumer can pass through inquiry terminal machine, the Internet, Mobile phone short messages, inquires about oneself bought food quality the most qualified, can be widely applied to business Super, the market of farm produce, fruit and vegerable market, seafood marine industry.

Summary of the invention

The purpose of this utility model is to avoid the deficiencies in the prior art, and provides a kind of circuit knot Structure is simple, stable performance, have weighing, show, network, real-name authentication, E-Payment, The intelligent tracing electronic scale of data upload function one.

The purpose of this utility model is reached by following measures, and intelligent tracing electronic scale is By CPU processor circuit, pressure transducer A/D convertor circuit, WIFI module circuit, RFID Radio frequency identification module interface, thermal printer interface, keyboard interface, LCD show interface, USB Interface, RJ45 network interface, RS232 interface composition, power circuit provide the burning voltage needed, Collect the weight of testee by pressure transducer and be converted to the signal of telecommunication, then via A/d converter is converted into digital signal and is input in CPU processor process, CPU processor After process, digital signal is transported on LCD display show measurement result, thermal printer Being connected with the serial ports of CPU processor by interface, CPU processor is by controlling thermal printer Print transaction information, CPU processor is entered with server end by RJ45 network interface or WIFI module Row communication carries out uploading transaction data and downloading merchandise news, and keyboard control module is connect by keyboard Mouth is connected with CPU processor GPIO foot and receives Keyboard Control information, RFID RF identification mould Block is connected with the serial ports of CPU processor by interface, and CPU processor is receiving RF identification Signal is uploaded onto the server end, USB interface and RS232 by RJ45 network interface or WIFI module Interface can carry out Peripheral extension.

CPU processor circuit of the present utility model is by CPU processor, protection circuit, SDRAM Circuit, FLASH program storing circuit, crystal oscillating circuit, crystal oscillating circuit connects CPU processor, Produce impulse waveform accurately and make the orderly work of program, FLASH to be supplied to CPU processor Program storing circuit connects CPU processor, and CPU processor calls FLASH program storage electricity Program in road makes system start working according to the requirement of program, at CPU in SDRAM circuit Reason device can export a signal allows CPU processor quit work to open protection circuit.

Pressure transducer A/D convertor circuit is to be inserted by AD conversion integrated package, resistance capacitance, interface Seat composition, pressure transducer A/D convertor circuit connects CPU processor, pressure transducer collection To the weight of testee and be converted to the signal of telecommunication and be connected with AD conversion integrated package by interface Connect.Function of weighing of the present utility model passes through in CPU processor after system electrification is stable Put system program and call function and AD conversion integrated package communicates, be placed on pressure when there being object After on force transducer, pressure transducer collects the weight of testee and is converted to analog telecommunications Number being transported on AD conversion integrated package, then AD conversion integrated package is converted into digital signal handle Digital signal is transported to CPU processor, and CPU processor is by defeated after built-in system routine processes Deliver to LCD display show, be transported to thermal printer and carry out print transaction information, defeated Deliver to WIFI module or RJ45 network interface is uploaded onto the server end.

WIFI module circuit is made up of WIFI integrated package, resistance capacitance, and WIFI module exports Signal be input in CPU processor communicate with server end.Of the present utility model wireless Communication function is by the built-in system routine call of CPU processor after system electrification is stable Function is that the integrated package of wireless communication function carries out initialization program, and user can pass through management field Face selects and arranges wireless communication function, to facilitate intelligent tracing electronic scale to carry out with server end Communication.

RFID radio frequency identification module interface is to be protected integrated package by resistance capacitance, ESD, and interface is inserted Seat composition, RFID radio frequency identification module is connected with the serial ports of CPU processor by interface socket. Real-name authentication function of the present utility model passes through CPU processor after system electrification is stable Built-in system routine call function and RFID video identification module communicate, and penetrate when there being RFID Frequently, time in card is in antenna range, RFID video identification module just arrives the information conveyance received CPU processor, CPU processor passes through RJ45 receiving after information in radio frequency processes Network interface or WIFI module end of uploading onto the server is identified and stores.

Thermal printer interface is made up of resistance capacitance, ESD protection integrated package, interface socket, Thermal printer is connected with the serial ports of CPU processor by interface.Of the present utility model printing is handed over Easily informational function is to be adjusted by the built-in system program of CPU processor after system electrification is stable Communicating with function and thermal printer, CPU processor is by controlling thermal-sensitive printer printing Transaction Information.

Keyboard interface is made up of integrated package, resistance capacitance, interface socket, keyboard control module Send push button signalling by keyboard interface and output a signal to CPU process again to shaping integrated package Device.Keypress function of the present utility model passes through in CPU processor after system electrification is stable Put system program and call function and keyboard control module communicates, the keyboard when there being button to press Control module conveying push button signalling, to shaping integrated package, is transported to after push button signalling is carried out shaping CPU processor, CPU processor performs corresponding dynamic after being processed by built-in system program Make.

LCD display interface is made up of resistance capacitance, interface socket.LCD of the present utility model Display function is by the built-in system routine call of CPU processor after system electrification is stable Function and LCD display module communicate, and CPU processor is by after built-in system routine processes The information needing display is sent in LCD display module control LCD by interface socket show Display screen shows information.

USB interface is to be protected integrated package, resistance capacitance, USB-A by power management integrated package, ESD Type socket forms, and power management integrated package supports that USB device prevents power supply from falling when warm swap Falling, can well power for USB device, be also equipped with overcurrent protection function, ESD protects collection In bulk prevents electrostatic from damaging CPU processor by transmission line.USB interface of the present utility model electricity Road is to call a function to realize management, because of CPU by the system program that CPU processor is built-in Processor is integrated with the function of USB interface, supports USB2.0 communication protocol.CPU processor Built-in system program can manage all ancillary equipment meeting USB communication protocol.Such as USB Mouse, USB keyboard, USB hard disk, USB rfid interrogator.

RJ45 network interface is made up of PHY layer integrated package, resistance capacitance, net mouth transformer socket, CPU processor calls function transfer to PHY layer integrated package through system program, is then communicated to net On mouth transformer outlet, realize the mutual of data.RJ45 network interface of the present utility model is logical Cross CPU and process built-in system program realization management, because CPU processor is integrated with RJ45 The function of network interface, it is possible to achieve meet the communication function of ICP/IP protocol.CPU processor Network interface pin is connected on external physical layer integrated package, is then realized electrically by net mouth transformer Isolation, is transferred to after preventing electromagnetic interference on RJ45 network interface realize and external equipment interactive information.

RS232 interface includes integrated package, resistance capacitance, audion, and socket forms, at CPU Reason device calls function transfer to integrated package through system program, then is transferred to insert by integrated package Seat, realizes the mutual of data, and audion can well protect CPU processor from electrostatic Damage.RS232 serial ports of the present utility model is to be come by the system program that CPU processor is built-in Realize management.On CPU processor, UART foot transmits the information on RS232 integrated package real It is transferred on socket just to realize and meet after now meeting the voltage signal of RS232 communication The equipment of RS232 communication protocol realizes communication.

This utility model each functional circuit simple in construction, stable performance, install and observe conveniently, Use high-performance ARM9 architecture processor, powerful linux operating system, collection weigh, Display, networking, real-name authentication, E-Payment, data upload function in one terminal unit, Can be widely applied to that business is super, the market of farm produce, fruit and vegerable market, seafood marine industry.

Accompanying drawing explanation

Accompanying drawing 1 is intelligent tracing electronic scale block architecture diagram schematic diagram.

Accompanying drawing 2 is CPU processor circuit theory schematic diagram.

Accompanying drawing 3 is pressure transducer A/D convertor circuit principle schematic.

Accompanying drawing 4 is WIFI module circuit theory schematic diagram.

Accompanying drawing 5 be RFID radio frequency identification module interface, thermal printer interface, keyboard interface, LCD display interface circuit principle schematic.

Accompanying drawing 6 is usb circuit principle schematic.

Accompanying drawing 7 is RJ45 network port circuit principle schematic.

Accompanying drawing 8 is RS232 interface circuit principle schematic.

Detailed description of the invention

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, this utility model is by being by CPU processor circuit, pressure Sensors A D change-over circuit, WIFI module circuit, RFID radio frequency identification module interface, temperature-sensitive Printer interface, keyboard interface, LCD show interface, USB interface, RJ45 network interface, RS232 Interface composition, power circuit provide the stable electricity needed.This utility model is applied to that business is super, agriculture Trade market, fruit and vegerable market, seafood marine industry, connect 220V alternating current and turn on the power switch Stable voltage the most just can be provided.Intelligent tracing electronic scale powers on after stablizing by CPU process It is that AD conversion integrated package, LCD display, temperature-sensitive are beaten that the built-in system program of device calls function Print machine, keyboard, WIFI module, RJ45 network interface integrated package, USB interface integrated package, RS232 Integrated package initializes program, and weight analog electrical signal starts after being input to integrated package according to configuration journey Sequence work also shows, at LCD display, the information of starting purchasing seasonal commodities, by keyboard configuration intelligent tracing electricity Son claims with the functional requirement meeting user.When placing articles on the scale pan of intelligent tracing electronic scale Time, by the pressure transducer in intelligent tracing electronic scale, weight is converted to analog electrical signal defeated Delivering on AD conversion integrated package, then AD conversion integrated package is converted into digital signal and numeral Signal is transported to CPU processor, and CPU processor is transported to by after built-in system routine processes LCD display shows, is transported to thermal printer and carries out print transaction information, is transported to WIFI module or RJ45 network interface are uploaded onto the server end.The signal of WIFI module output passes through Socket is input in CPU processor, by the built-in system routine call function of CPU processor Integrated package for wireless communication function carries out initialization program, and user can be selected by administration interface Select and wireless communication function is set, thus can communicate with server end.RFID penetrates Frequently identification module is connected with the serial ports of CPU processor, by CPU process by interface socket Built-in system routine call function and the RFID video identification module of device communicate, when having When RFID radio-frequency card is in antenna range, RFID video identification module is just the information received Being transported to CPU processor, CPU processor is logical receiving after information in radio frequency processes Cross RJ45 network interface or WIFI module end of uploading onto the server is identified and stores.Thermal printing Machine is connected with the serial ports of CPU processor, by the built-in system of CPU processor by interface Routine call function and thermal printer communicate, and CPU processor is by controlling thermal printing Machine print transaction information.Keyboard control module sends push button signalling to shaping collection by keyboard interface In bulk outputs a signal to CPU processor again, is adjusted by the built-in system program of CPU processor Communicate with function and keyboard control module, the keyboard control module conveying when there being button to press Push button signalling, to shaping integrated package, is transported to CPU processor after push button signalling is carried out shaping, CPU processor performs corresponding action by built-in system program after being processed.LCD shows Interface is led to by built-in system routine call function and the LCD display module of CPU processor Letter, CPU processor is by passing through interface the information needing display after built-in system routine processes Socket is sent in LCD display module control LCD display to show information.USB interface Circuit is to call a function to realize management by the system program that CPU processor is built-in, because of CPU processor is integrated with the function of USB interface, supports USB2.0 communication protocol.RJ45 net Mouthful call function transfer to PHY layer integrated package by CPU processor through system program, then pass It is passed on net mouth transformer socket, realizes the mutual of data.RS232 interface by CPU at Reason device calls function transfer to integrated package through system program, then is transferred to insert by integrated package Seat, realizes the mutual of data, and audion can well protect CPU processor from electrostatic Damage.

As shown in Figure 2, CPU processor circuit of the present utility model is by CPU integrated package U1 (S3C2440), protection integrated package U9 (MAX811), SDRAM integrated package U6 And U7 (HY57V561620BT), NAND FLASH integrated package U2 (HY57V561620BT) (K9F1208), NOR FLASH integrated package U10 (SST39VF1601), crystal oscillator X2, resistance Electric capacity forms.Protection integrated package mainly has a voltage monitoring, program fleet, hand-reset function, Protection system worked well can well be played.SDRAM integrated package is mainly for system program Program and data are deposited performing when.FLASH integrated package mainly provides storage for system Program and the function of data.Crystal oscillator can be CPU provide high-precision pulse, allow CPU according to Certain sequential working.

As shown in Figure 3, pressure transducer A/D convertor circuit of the present utility model is by CPU Processor U1 (S3C2440), AD conversion integrated package U26 (ADS1232), resistance capacitance, Interface socket J4 forms.Pressure transducer collects the weight of testee and is converted to telecommunications Number it is transferred to AD conversion integrated package U26 by interface socket J4.Lead to after system electrification is stable The built-in system routine call function crossing CPU processor initializes AD conversion integrated package U26. Then AD conversion integrated package U26 conversion digital signal is transported to CPU processor and processes.

As shown in Figure 4, WIFI module circuit of the present utility model is by CPU processor U1 (S3C2440), integrated package U19 (SKW17), resistance capacitance composition.When system electrification is stable Integrated package U19 is initialized afterwards by CPU processor U1.Then by CPU processor U1 The system program put calls function makes integrated package U19 be operated according to system program.

As shown in Figure 5, this utility model RFID radio frequency identification module interface circuit is by CPU Processor U1 (S3C2440), electrostatic protection integrated package U21 (PLR0502), interface socket CON2, resistance capacitance form.Thermal printer interface circuit is by CPU processor U1 (S3C2440), electrostatic protection integrated package U22 (PLR0502), interface socket CON3, electricity Resistance electric capacity composition.Keyboard interface circuit is by CPU processor U1 (S3C2440), integrated package U23 (74LVC4245APW), terminal fitting CON4, resistance capacitance composition.LCD display interface electricity Route CPU processor U1 (S3C2440), terminal fitting J2, resistance capacitance composition.RFID Radio frequency identification module interface socket is connected on TXD1 and the RXD1 pin of CPU processor U1, Electrostatic protection integrated package U21 can protect CPU processor from the damage of electrostatic high-pressure, when being System powers on after stablizing and is initialized by CPU processor U1 calling system program and managed. Thermal printer interface socket is connected on TXD2 and the RXD2 pin of CPU processor U1, quiet Electric protection integrated package U22 can protect CPU processor from the damage of electrostatic high-pressure, works as system Power on and initialize by CPU processor U1 calling system program and manage after stablizing.Key Dish interface socket J2 receives on integrated package U23 pin, and integrated package U23 receives the GPIO of CPU On pin, at the beginning of being carried out by CPU processor U1 calling system program after system electrification is stable Beginningization also manages.CPU processor U1 is integrated with LCD and shows interface function, works as system electrification Initialize LCD display by CPU processor U1 after Wen Ding, then pass through CPU processor System program built-in for U1 calls function makes LCD display show information.

As shown in Figure 6, usb circuit of the present utility model is by CPU processor U1 (S3C2440), power management integrated package U24 (MIC2505), ESD protection is integrated U25 (PLR0502), resistance capacitance, USB-A type socket J3 form.CPU processor U1 collection Having become the function of USB interface, these functions are come by system program built-in for CPU processor U1 Complete management.

As shown in Figure 7, RJ45 network port circuit of the present utility model is by integrated package U18 (DM9000), RJ45 socket J4, resistance capacitance composition.By CPU processor built-in be System program management network port so that it is communication meets ICP/IP protocol.CPU processor U1 is integrated with Network interface, the signal of U1 output is after the data that integrated package U18 conversion meets ICP/IP protocol Signal is transferred to RJ45 network interface socket J4 and is integrated with net mouth transformer, net mouth transformer rise isolation, Prevent the function of electromagnetic interference, realize logical through RJ45 network interface socket J4 and the outside network equipment Letter.

As shown in Figure 8, RS232 circuit of the present utility model is by integrated package 17 (MAX3232), audion, resistance capacitance, socket COMO composition.RS232 circuit is logical Cross the built-in system program management UART foot of CPU processor U1, the signal of UART foot output Through integrated package U17 be converted into meet RS232 communication signal after right to realize through socket COMO Outer communication.

Claims (7)

1. an intelligent tracing electronic scale, is characterized in that including CPU processor circuit, pressure Sensors A D change-over circuit, WIFI module circuit, RFID radio frequency identification module interface, temperature-sensitive Printer interface, keyboard interface, LCD show interface, USB interface, RJ45 network interface, RS232 Interface composition, power circuit provide need burning voltage, by pressure transducer collect by Survey the weight of object and be converted to the signal of telecommunication, being then converted into digital signal via a/d converter It is input in CPU processor process, after CPU processor processes, digital signal is carried Showing measurement result on LCD display, thermal printer is by interface and CPU processor Serial ports is connected, and CPU processor is by controlling thermal-sensitive printer printing Transaction Information, CPU process Device is communicated by RJ45 network interface or WIFI module and server end and carries out uploading transaction data With download merchandise news, keyboard control module is by keyboard interface and CPU processor GPIO foot Being connected to receive Keyboard Control information, RFID radio frequency identification module is by interface and CPU process The serial ports of device is connected, CPU processor receive radio frequency identification signal by RJ45 network interface or Upload onto the server end, USB interface and RS232 interface of WIFI module can carry out ancillary equipment Extension.

Intelligent tracing electronic scale the most according to claim 1, is characterized in that CPU process Device circuit includes CPU processor, protection circuit, SDRAM circuit, FLASH program storage electricity Road, crystal oscillating circuit, crystal oscillating circuit connects CPU processor, produces impulse waveform accurately and carry Supply CPU processor makes the work that program is orderly, and FLASH program storing circuit connects at CPU Reason device, CPU processor one signal of output opens protection circuit allows CPU processor stop Work.

Intelligent tracing electronic scale the most according to claim 1, is characterized in that pressure sensing Device A/D convertor circuit includes AD conversion integrated package, resistance capacitance, interface socket, pressure sensing Device A/D convertor circuit connects CPU processor, and pressure transducer collects the weight of testee And be converted to the signal of telecommunication and be connected with AD conversion integrated package by interface, AD conversion integrated package handle Digital data transmission after conversion processes to CPU processor.

Intelligent tracing electronic scale the most according to claim 1, is characterized in that WIFI module Circuit includes that WIFI integrated package, resistance capacitance, the signal of WIFI module output are input to CPU Processor communicates with server end.

Intelligent tracing electronic scale the most according to claim 1, is characterized in that RFID radio frequency Identification module interface includes that resistance capacitance, ESD protect integrated package, interface socket, RFID radio frequency Identification module is connected with the serial ports of CPU processor by interface socket, and CPU processor is receiving Uploaded onto the server by RJ45 network interface or WIFI module after processing to information in radio frequency End is identified and stores.

Intelligent tracing electronic scale the most according to claim 1, is characterized in that thermal printing Machine interface includes that resistance capacitance, ESD protect integrated package, interface socket, and thermal printer passes through Interface is connected with the serial ports of CPU processor, and CPU processor is by controlling thermal-sensitive printer printing Transaction Information.

Intelligent tracing electronic scale the most according to claim 1, is characterized in that keyboard interface Including integrated package, resistance capacitance, interface socket, keyboard control module is sent by keyboard interface Push button signalling outputs a signal to perform after CPU processor processes to shaping integrated package again Corresponding action；LCD display interface includes resistance capacitance, interface socket, CPU processor handle The information needing display is sent in LCD display module control LCD by interface socket and shows Screen shows information；USB interface includes that power management integrated package, ESD protect integrated package, electricity Resistance electric capacity, USB-A type socket；RJ45 network interface includes PHY layer integrated package, resistance capacitance, net Mouth transformer outlet composition, CPU processor is transferred to PHY layer integrated package, then becomes through network interface Depressor integrated package is transferred on socket；RS232 interface includes integrated package, resistance capacitance, three poles Pipe, socket, CPU processor is transferred to integrated package, is then transferred to socket by integrated package.