CN201383167Y - ZigBee-network-based handheld touch self-serving dish-order instrument for restaurants - Google Patents

Abstract

Disclosed is a zigBee-network-based handheld touch mode self-serving dish-order instrument for restaurants. A communication module of the instrument adopts a ZigBee wireless transmission network system, and the module is combined with an embedded touch system to realize a novel restaurant touch dish-order instrument with low cost, high reliability and strong practicability. The instrument comprises a touch embedded system based on a Samsung S3C2440 chip, a ZigBee communication module, an LCD display and a touch screen. An embedded Linux system is operated on the S3C2440 chip, and data are exchanged through a UART and the ZigBee communication module. Dish-order information is sent to the ZigBee module by the touch screen, and then is transmitted to a center server computer through the ZigBee network, or controlling information is received from the ZigBee module, and then is analyzed and displayed on an LCD according to preset standards. The self-serving dish-order instrument has the advantages of modulated devices, low power consumption, low cost, simple maintenance, easy installation and arrangement, strong network expansibility, high practicability, easy popularization and the like.

Description

Hand-held touch type restaurant self-service dish ordering instrument based on the ZigBee network

[technical field]:

The dining room self-service formula that the utility model relates to ZigBee radio communication and embedded system, built-in Linux, touch the ruton letter instrument of ordering dishes.

[background technology]:

Wireless electronic ordering system in the past mostly adopts as infrared mode, IC-card mode (comprising contact and noncontact dual mode), bluetooth approach etc., these modes are subjected to restrictions such as message transmission rate and transmission range, can not accomplish to lack processing capacities such as real-time query transmission such as dish, total price, the detail of ordering dishes, and based on the wireless local area network (WLAN) system of 802.11b owing to reasons such as Costco Wholesale and coverage distances, be difficult to realize the large-scale application of hotels again.

ZigBee is that a kind of low cost, low-power consumption, short-range radio sensing network are touched fields such as control system.Be that a kind of use ZigBee agreement is carried out Netcom's beacon standard, low cost makes that ZigBee can be by subordinate widely in the application of controlled in wireless and monitoring, and low power consumption makes it use littler battery, and longer life cycle can be arranged.The mesh network (mesh networking) that ZigBee uses has ensured reliability of applying and coverage.Therefore the ZigBee technology is in various fields extensive application prospects such as family expenses automation equipment and Industry Control.Wireless sensor network relates to numerous subjects, becomes one of research focus in the IT field.Wireless sensor network has been expanded people's information obtaining ability, the physical message of objective world is transmitted network together link together, and will provide direct, effective, the most real information for people in the Next Generation Internet network.Wireless sensor network can obtain objective physical message, and intrinsic very wide application prospect can be applied to numerous areas such as military and national defense, industrial or agricultural control, city management, biologic medical, environmental monitoring, rescue and relief work, hazardous location Long-distance Control.

ARM (Advanced RISC Machines) is the common name to a class microprocessor, also is a kind of name of technology.At present, oneself spreads all over various product markets such as Industry Control, consumer electronics product, communication system, network system, wireless system the ARM microprocessor, microprocessor applications based on the ARM technology has occupied the market share of 32 risc microcontrollers more than 75% approximately, and the ARM technology is progressively penetrating into the various aspects of our life.Adopt the ARM microprocessor of RISC framework generally to have following characteristics: volume is little, low-power consumption, low cost, high-performance: (32 two instruction set can well compatible 8/16 devices to support Thumb (16)/ARM; A large amount of registers that use, instruction execution speed is faster; Most of data manipulations are all finished in register; Addressing mode is simple flexibly, carries out the efficient height; Instruction length is fixing or the like.At industrial control field, not only occupied most of market share in high-end microcontroller market based on the microcontroller chip of ARM nuclear, also expand to low side microcontroller application gradually simultaneously, the low-power consumption of ARM microcontroller, high performance-price ratio, to 8/16 traditional 8-digit microcontrollers challenge has been proposed, and at present existing 85% the wireless telecommunications system of surpassing also adopted the ARM technology, and ARM consolidates in the status in this field day by day with its high-performance and low cost.

The ARM framework, (Advanced RISC Machine, more early be called: AcornRISC Machine), be one 32 reduced instruction set computers (RISC) processor architectures, it uses widely in many Embedded System Design to be called into rank reduced instruction set computer machine in the past.Because energy-conservation, arm processor is highly suitable for the Mobile Communications field, the characteristic that to meet its main design object be low power consumption.

Along with the raising of people's living standard and the transformation of life style, some variations have also taken place in the mode of ordering dishes of catering trade.Wireless electron is ordered and is come into people's life gradually, utilizes technology such as advanced communication and embedded database, moves towards total digitalization for catering trade comprehensively the solution of finishing is provided.Can simplify the financial accounting cost of food and beverage enterprise, the reception personnel is served in saving, improving the human resources utilization leads, significantly shortened the average latency, improve the work efficiency and the service quality of catering trade, alleviate cashier's workload, when accelerating checkout speed, make the mistake of cash register checkout be reduced to zero substantially.Improve and manage class, make catering trade really accomplish the comprehensive IT application management.

[utility model content]:

The utility model purpose is to overcome the deficiency that existing formula order dishes system exists, and a kind of hand-held touch type restaurant self-service dish ordering instrument based on the ZigBee network is provided.

The touch type restaurant self-service dish ordering instrument based on the ZigBee network that the utility model provides comprises:

Embedded system based on the S3C2440 chip: in this system embedded Linux system is housed, main operation order dishes software and demonstration and the control touch system and send dishes ordering information be responsible for to serial ports;

FLASH storer: be connected by DCB with the S3C2440 chip,, deposit embedded Linux kernel and its file system as the primary memory of embedded system;

LCD display and NEC3.5 cun touch-screen: be connected with embedded system, import dishes ordering information by NEC3.5 cun touch-screen, and show by LCD display;

ZigBee wireless communication module based on the CC2430 chip: this module is connected with embedded system by the serial ports between communication module, is responsible for the transmission of embedded system and ZigBee data between nodes.

Advantage of the present utility model and good effect:

The utility model adopt have super low-power consumption, the network-adaptive ability is strong, network capacity the is big new network based on the ZigBee wireless communication protocol realizes the network architecture in dining room.On the basis of this network, realized that on terminal the order perfection of software of ZigBee wireless network and built-in touch is connected collaborative work.

The utility model combines the radio sensing network technology with the ARM handheld device, utilize the ARM9 chip to make up an embedded system handheld terminal of supporting touch-screen, and developed self-service meal ordering system thereon with good human-computer interaction interface, ZigBee radio sensing network module that terminal is integrated, make that the operation to menu can feed back to server management system timely on handheld terminal, realize the intelligent scheduling and the management in dining room.It is low to have cost, the reliability height, low in energy consumption, multiple functional, extensibility is strong, support software upgrading, safeguard simple, be easy to install and dispose and characteristics such as practical.

[description of drawings]:

Fig. 1 is the system chart of the utility model handset;

Fig. 2 is the block diagram of communication interface between embedded system and the ZigBee;

Fig. 3 is the peripheral circuit schematic diagram of the used S3C2440 chip of embedded system in the utility model;

Fig. 4 is to use the peripheral circuit schematic diagram of the ZigBee communication node of CC2430 chip;

Fig. 5 is the serial port circuit of embedded system.

[embodiment]:

Embodiment 1:

As shown in Figure 1, the touch type restaurant self-service dish ordering instrument that the utility model provides based on the ZigBee network, be that technical grade S3C2440 embedded microprocessor with Samsung is that embedded product platform constitutes embedded system, the ZigBee wireless communication module is connected on the embedded system by serial ports, on embedded system, move built-in Linux operating system, user operation carried out can going up by the very color LCD of 3.5 cun TFT (touch-screen) on the embedded platform after the analyzing and processing show output, and under Linux, software programmed and make 2440 platforms transmit data by serial ports to the ZigBee communication module from program.

As shown in Figure 2, embedded system and the ZigBee intermodule block diagram of communicating by letter by 3 UART data lines (COM3).The information of ordering all is transferred to the ZigBee module by COM3, and the ZigBee module is carried out simple verification to Frame then, by the ZigBee network of having set up the information of ordering dishes is sent to the Control Server end at center at last.

The concrete grammar of realizing dining room self-service dish-ordering with this instrument is:

The first, open this instrument of ordering dishes, power supply is given all module for power supply, and embedded system enters BIOS from NOR, starts the embedded Linux system that is installed in wherein from the FLASH storer then, when system start-up finishes, the self-service dish-ordering software that is embedded in system loads automatically and brings into operation;

The second, ZigBee radio communication mold initialization block: begin to seek the ZigBee network that pre-defines, behind the ZigBee of instrument wireless communication module success access network, led2 lamp on the ZigBee wireless communication module lights, enter the transmission standby condition, wait for that the data stream of embedded system arrives constantly;

Three, order dishes with touch manner by touch-screen by the user, the information of ordering dishes was advanced the processing of software, data frame format by appointment is transferred to the ZigBee wireless communication module by serial ports, the ZigBee wireless communication module is after receiving the next dishes ordering information of serial ports transmission, pass through contrast with the frame format of arranging, after confirming that data layout is errorless, Frame is arrived the ZigBee Centroid by the ZigBee network delivery, when transmission is finished, the ZigBee wireless communication module enters the transmission idle condition, waits for that the data stream of embedded system arrives constantly;

Described data layout (embedded system-＞ZigBee module) is an example with 40 bytes (Bytes), data frame format such as table 1

Table 1 data frame format

1	2	3	4----5	6	7----39	40
							FF	The number of being ordered dishes	For order dishes (00) still moves back dish (01) frame	Keep	The table number	The dish numbering	FE

Wherein, begin with first byte FF; Second to the 6th byte is as control byte, wherein: the value representation of second byte is the length of Frame, i.e. number of being ordered dishes, the 3rd byte is for ordering dishes or moving back the dish control byte, and its value is then represented normally to order dishes for 0x00, and its value is moved back dish for 0x01 then is expressed as, thereafter data are the numbering of the dish that need return, the the 4th to the 5th byte is reserve bytes, for function expansion is later on prepared, and the 6th byte representation table number; The numbering of the 7th to the 3rd each dish of nineteen byte representation, byte of each dish, vacant position inserts 00; Last byte FE represents to finish.

S3C2440 is a 32 digit RISC micro controllers based on the ARM920T kernel that Samsung releases, and the arithmetic speed that it is operated under the 400MHz frequency reaches as high as the instruction of per second 40M bar; Integrated abundant peripheral functional modules on S3C2440 designs at the application of system's control, communication field specially; Embedded platform integrated multiple peripheral interface, comprise USB interface, serial ports, CAN interface, AD/DA interface, 485 bus interface, audio interface, SD/MMC card reader, JTAG/ICE, DEBUG debugging interface, LCD display interface etc.

Fig. 4 constitutes the connected mode of the application peripheral circuit of ZigBee module for the CC2430 chip.The CC2430 chip needs peripheral components seldom to cooperate the transmission-receiving function that just can realize signal.

Circuit uses a unbalanced antennas, connects balun transformer and can make antenna performance better.Balun transformer in the circuit is made up of capacitor C 341 and inductance L 341, L321, L331 and a PCB microwave transmission line, and total satisfies the requirement of RF I/O build-out resistor (50 Ω).Inner T/R switched circuit is finished the exchange between LNA and the PA.R221 and R261 are biasing resistor, and resistance R 221 is mainly used to provide a suitable working current for the crystal oscillator of 32MHz.With the quartz resonator (XTAL1) of 1 32MHz and the crystal oscillating circuit of a 32MHz of 2 electric capacity (C191 and C211) formation.With the quartz resonator (XTAL2) of 1 32.768kHz and the crystal oscillating circuit of a 32.768kHz of 2 electric capacity (C441 and C431) formation.Voltage regulator is pin and the internal electric source power supply that all require 1.8V voltage, and C241 and C421 electric capacity are decoupling capacitances, is used for power filter, to improve the stability of chip operation.

Wherein the details of each device see Table 2.

Table 2 device details

Device	Details
		C191、C211	22pF
C241、C421	220nF
		C341	5.6pF
C431、C441	15pF
		L321	8.2nH
L331	22nH
		L341	1.8nH
R221	56K
		R261	42K
XTAL1	32Mhz
		XTAL2	32.768KHz

Fig. 5 is the employed serial port circuit of embedded system, and present embodiment has been realized the level conversion of UART by the MAX3232 chip.Max3232 powers by 3.3V, adds illustrated few several resistance capacitances, has realized the conversion between Transistor-Transistor Logic level and the RS-232 level.Make PC pass through the working condition that RS-232 interface can be monitored embedded system very easily, also can allow the data of embedded system directly be transferred to the PC end by RS232.Present embodiment has been reserved three UART mouths, as the COM1 among the figure, and COM2, COM3, wherein COM1 and RS-232 are the different expression forms of same group of serial ports.

Claims (1)

1, a kind of hand-held touch type restaurant self-service dish ordering instrument based on the ZigBee network is characterized in that this instrument comprises:

Embedded system based on the S3C2440 chip: in this system embedded Linux system is housed, main operation order dishes software and demonstration and the control touch system and send dishes ordering information be responsible for to serial ports;

FLASH storer: be connected by DCB with the S3C2440 chip,, deposit embedded Linux kernel and its file system as the primary memory of embedded system;

LCD display and NEC3.5 cun touch-screen: be connected with embedded system, import dishes ordering information by NEC3.5 cun touch-screen, and show by LCD display;

ZigBee wireless communication module based on the CC2430 chip: this module is connected with embedded system by the serial ports between communication module, is responsible for the transmission of embedded system and ZigBee data between nodes.

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