CN102902995B - A kind of intelligent terminal control system - Google Patents

Abstract

Intelligent terminal control system of the present invention, its special character is: comprise radio-frequency (RF) tag, radio frequency read-write terminal control module, host computer three part, communication is carried out by radiowave between radio-frequency (RF) tag and radio frequency read-write terminal control module, also adopt wireless telecommunications between radio frequency read-write terminal control module and host computer, adopt wireless radio-frequency to solve identification, the storage of figure information and the problem such as to maintain secrecy.The invention has the beneficial effects as follows, the present invention adopts STM32 series 32 digit flash memory microcontroller Cortex-M3 kernels, reads and writes ultrahigh-frequency tag, processing speed is fast, effectively can solve the collision problem of radio frequency label, easy to carry, adopt touch-screen as man-machine interface, easy to operate.This products application, in shop equipment management, each charge station, traffic administration, can also be applied to the places such as library, tourist attractions and museum.

Description

A kind of intelligent terminal control system

Technical field

The present invention relates to a kind of intelligent terminal control system, can be used for the fast reading and writing of radio frequency label.

Background technology

Along with the development of the technology such as large scale integrated circuit, network service, information security, wireless RF label technique enters the commercial applications stage.Owing to having the features such as fast moving objects identification, multi-targets recognition and contactless identification, wireless RF label technique demonstrates huge development potentiality and application space, one of the most rising infotech being considered to for 21st century.Radio frequency read-write technology not only obtains application in multiple fields such as logistics management, public transport management, commercial production, and has come into our life gradually, allows the out and out radio frequency read-write technology of experiencing of people be that we live the benefit brought.

Based on the investigation and application of wireless radio-frequency, the mainly backwardness of bar codes technique, and radio frequency label need not manual operation, by read induction can from trend intelligent terminal control module send comprise the information of data, thus realize the robotization of information processing.Radio frequency label can automatically identifying and reading label substance, and height integrated data, thus can record more information about article.In the epoch that current Internet of Things is advanced by leaps and bounds, the intelligent terminal control module designing a kind of quick identification radio frequency label becomes inevitable.

Summary of the invention

The present invention, in order to make up the deficiencies in the prior art, provides a kind of intelligent terminal control system, overcome existing intelligent terminal control module processing speed slow, do not have modular design and can not effectively, the aspect deficiency such as quick position radio frequency label label.

The present invention is achieved through the following technical solutions:

Intelligent terminal control system of the present invention, its special character is: comprise radio-frequency (RF) tag, radio frequency read-write terminal control module, host computer three part, communication is carried out by radiowave between radio-frequency (RF) tag and radio frequency read-write terminal control module, also adopt wireless telecommunications between radio frequency read-write terminal control module and host computer, adopt wireless radio-frequency to solve identification, the storage of figure information and the problem such as to maintain secrecy.

Radio frequency read-write terminal control module comprises radio frequency module for reading and writing, input through keyboard module, display module, alarm module, memory extensive module, wireless communication module and the touch-screen driver module of distinguishing connection control device module;

Radio frequency module for reading and writing: add power amplification circuit, increases the decipherment distance of radio frequency read-write terminal control module and radio-frequency (RF) tag and the communication distance with host computer;

Display module: the relevant information of system shown, comprises label information, System menu, system time, networking situation, system running state, information, help information;

Input through keyboard module: the input realizing radio frequency read-write terminal control module related data, controls the work of radio frequency read-write terminal control module;

Alarm module: be mainly used in system malfunctions, occur error condition alarm;

Memory extensive module: for preserving user data, stores a large amount of radio frequency label information, does further data processing when being transferred to main frame by wireless communication module after data acquisition;

Wireless communication module: for communicating of radio frequency read-write terminal control module and host computer.

The controller module of radio frequency read-write terminal control module, use the Cortex-M3 processor of ARM series, monocycle Flash stores.

In radio frequency read-write terminal control module, radio frequency module for reading and writing arranges ripple in 915MHz section, and wireless communication module arranges ripple in 433MHz section.

Radio frequency read-write terminal control module collects the information of radio-frequency (RF) tag, label information is shown to user by display module, and label ID is sent to host computer by wireless communication module, after host computer retrieves details corresponding to this ID, by wireless communication module, details are returned to radio frequency read-write terminal control module again, finally shown by display module.

The invention has the beneficial effects as follows, the present invention adopts the Cortex-M3 processor using ARM series, processing speed is obviously accelerated, effectively can solve the collision problem of radio frequency label, read and write radio frequency label easily, it has high-performance, low-power consumption, in real time application, cost are low, and simple to operate, operability is strengthened, and is convenient to large-scale promotion.Based on Cortex-M3 microprocessor, can the ultrahigh-frequency tag that frequency in certain area is 915MHz be read and write, easy to carry, adopt touch-screen as man-machine interface, easy to operate.Intelligent terminal control system not only can apply manage with shop equipment, each charge station, traffic administration, help to increase work efficiency, the places such as library, tourist attractions and museum can also be applied to, for people's life provides convenient.

Accompanying drawing explanation

Accompanying drawing is structural representation of the present invention.

Fig. 1 intelligent terminal control system composition schematic diagram.The each block diagram of Fig. 2 radio frequency read-write terminal control module.Fig. 3 radio frequency module for reading and writing part and main control chip schematic diagram.Fig. 4 LCD display module part.Fig. 5 input through keyboard module section.Fig. 6 alarm module section.Fig. 7 radio frequency read-write terminal control module work flow diagram.Fig. 8 data encoding is schemed with modulation.Fig. 9 is radio frequency read-write terminal control module and radio-frequency (RF) tag.

Embodiment

Accompanying drawing is a kind of specific embodiment of the present invention.

Intelligent terminal control system of the present invention, comprise radio frequency label (TAG), radio frequency read-write terminal control module, host computer three part, contactless communication is realized by radiowave between radio-frequency (RF) tag and radio frequency read-write terminal control module, also adopt wireless telecommunications between radio frequency read-write terminal control module and host computer, adopt wireless radio-frequency to solve identification, the storage of figure information and the problem such as to maintain secrecy.This intelligent terminal control system composition schematic diagram as indicated with 1.

Radio frequency read-write terminal control module comprises radio frequency module for reading and writing, input through keyboard module, LCD display module, alarm module, memory extensive module, wireless communication module and the touch-screen driver module of distinguishing connection control device module.Ingredient as shown in Figure 2.

(a) control module part

The STM series microprocessor that this intelligent wireless radio frequency read-write terminal control module adopts modular design, main control chip adopts STMicw Electronics (ST) company, solves the deficiency that the processing speed solving the existence of existing reader is slow, do not have modular design.STM32 series 32 digit flash memory microcontrollers use has breakthrough Cortex-M3 kernel from ARM company, and monocycle Flash stores, and speed is up to 50MHz, and low power dissipation design, output power is adjustable, and stable performance, antijamming capability are strong.This kernel meets collection high-performance, low-power consumption, in real time application, price lower than the requirement of the built-in field of one.Adopt advanced Cortex-M3 microprocessor, complete radio frequency read-write terminal control module to the control of the functional modules such as display, input through keyboard, audio alarm.Its CPU schematic diagram as shown in Figure 3.

Cortex-M3 is a kind of up-to-date ARM embedded mmdb based on ARMv7-M framework, it adopts Harvard structure, use the instruction and data bus be separated, Harvard structure is more complicated physically, but processing speed is obviously accelerated, effectively can solve the collision problem of radio frequency label, read and write radio frequency label easily.

(b) radio frequency module for reading and writing part

Ripple is set between radio frequency module for reading and writing and radio-frequency (RF) tag in 915MHz section.Radio frequency module for reading and writing can directly be connected with master chip.Its schematic diagram as shown in Figure 4.

In the low power radio frequency read/write circuit of the hardware components of radio frequency module for reading and writing, by increasing power amplification circuit, increase the decipherment distance of radio frequency read-write terminal control module and radio-frequency (RF) tag and the communication distance with host computer.

(c) LCD display module part

The relevant information of system shows by LCD display module, comprises label information, System menu, system time, networking situation, system running state, information, help information etc.Its schematic diagram as shown in Figure 5.

(d) input through keyboard module section

Input through keyboard module realizes the input of radio frequency read-write terminal control module related data, and controlling the work of radio frequency read-write terminal control module, is the major way of man-machine interaction.Its schematic diagram as shown in Figure 6.

(e) alarm module section

Alarm module is mainly used in system malfunctions, occurs error condition alarm etc.Its schematic diagram as shown in Figure 7.

(f) memory extensive module part

Memory extensive module part, being the important module that radio frequency read-write terminal control module preserves user data, in order to store a large amount of radio frequency label information, doing further data processing when being transferred to main frame by wireless communication module after data acquisition.

(g) wireless communication module part

Wireless communication module, by being used for communicating of radio frequency read-write terminal control module and host computer, mainly uses bluetooth communication, makes system more freely, flexibly, wireless communication module arranges ripple in 433MHz section.

(3) radio frequency read-write terminal control module Software Module Design

(a) radio frequency read-write terminal control module workflow diagram

When after radio frequency read-write terminal control module successful acquisition to the information of radio-frequency (RF) tag, application program is by label information (comprising label ID, tag state etc.), user is shown to by LCD, and label ID is sent to database server by wireless data transfer module, after database server retrieves to details corresponding to this ID, by wireless data transfer module, details are returned to radio frequency read-write terminal control module again, finally show on LCD.Its process flow diagram as shown in Figure 8

(b) wireless data transfer module process flow diagram

In order to ensure the correctness of data rate and data, deblocking can be transmitted.When data are transmitted, according to the feature of data stream, in the data of piecemeal, add block check, mistake can be found timely like this, and feedback error information.Read write line receives the data of piecemeal and after calculation check, by deposit data in radio frequency read-write terminal control module, and judges whether data receive.In order to improve radio frequency read-write terminal control module work efficiency, the data instant playback that can will verify, and need not wait until that data all receive.

(c) touch-screen driver module process flow diagram

Put up the external circuit of chip according to touch-screen control chip ADS7843 structure, ADS7843 has difference and single-ended two kinds of mode of operations.Be compared to single-ended mode, difference modes has a lot of advantage:

The first, can with very long setup times process touch-screen under the condition not expanding converter acquisition time, namely touch-screen voltage can have time enough to settle out.

The second, ADS7843 can enter low-power consumption mode by quick clock, thus can save the energy content of battery.Thus difference mode of operation is selected.。

D () data encoding and modulation module design

In radio frequency label multiple electronic label environment-identification, between label, conflict is the key factor affecting radio frequency label system label reading rate.Gen-2 standard have employed based on probability, and point groove anti-collision algorithms, has powerful label measuring ability, solve radio frequency read-write terminal control module collision problem.Assigned frequency is to radio frequency read-write terminal control module in time, makes the minimum interference between them.Its process flow diagram as shown in Figure 9.

The major function of this intelligent terminal control module is that the information acquisition of radio frequency label communicates with host computer.Its adopts wireless radio-frequency to solve identification, the storage of figure information and the problem such as to maintain secrecy.Wireless radio-frequency is tether-free technologies, read convenient and swift, recognition speed is fast, penetrability is strong, read distance large, store that data capacity is large, long service life, label data dynamic change with encryption, security is good, dynamic realtime communicates, various shapes, can freely change storage information.

Claims (1)

1. an intelligent terminal control system, it is characterized in that: comprise radio-frequency (RF) tag, radio frequency read-write terminal control module, host computer three part, communication is carried out by radiowave between radio-frequency (RF) tag and radio frequency read-write terminal control module, also adopt wireless telecommunications between radio frequency read-write terminal control module and host computer, adopt the identification of wireless radio-frequency solution figure information, storage and privacy problem;

Radio frequency read-write terminal control module comprises radio frequency module for reading and writing, input through keyboard module, display module, alarm module, memory extensive module, wireless communication module and the touch-screen driver module of distinguishing connection control device module;

Radio frequency module for reading and writing: add power amplification circuit, increases the decipherment distance of radio frequency read-write terminal control module and radio-frequency (RF) tag and the communication distance with host computer;

Display module: the relevant information of system shown, comprises label information, System menu, system time, networking situation, system running state, information, help information;

Input through keyboard module: the input realizing radio frequency read-write terminal control module related data, controls the work of radio frequency read-write terminal control module;

Alarm module: be mainly used in system malfunctions, occur error condition alarm;

Memory extensive module: for preserving user data, stores a large amount of radio frequency label information, does further data processing when being transferred to main frame by wireless communication module after data acquisition;

Wireless communication module: for communicating of radio frequency read-write terminal control module and host computer;

wherein,the controller module of radio frequency read-write terminal control module, use the Cortex-M3 processor of ARM series, monocycle Flash stores;

In radio frequency read-write terminal control module, radio frequency module for reading and writing arranges ripple in 915MHz section, and wireless communication module arranges ripple in 433MHz section;

Radio frequency read-write terminal control module collects the information of radio-frequency (RF) tag, label information is shown to user by display module, and label ID is sent to host computer by wireless communication module, after host computer retrieves details corresponding to this ID, by wireless communication module, details are returned to radio frequency read-write terminal control module again, finally shown by display module.