CN201725338U - A wireless self-service ordering system - Google Patents

Abstract

A wireless self-service ordering system, comprising: a cash register computer equipped with order management accounting statistics software, a wireless self-service order machine distributed on each dining table, a single-chip microcomputer of a kitchen terminal, a touch screen display module and a touch screen control module; A computer and the bridge connected to it, the coordinator distributed in the restaurant, the router, and the wireless self-service ordering machine distributed in each table form a wireless data mesh network. RS-485 bus connection. The utility model applies advanced electronic information communication technology to quickly, safely, efficiently and stably manage the daily operation of the restaurant, the data transmission is accurate, timely and fast, the display is intuitive, the labor cost is saved, and the service quality and management level are improved.

Description

A wireless self-service ordering system

technical field

The utility model relates to the technical field of information systems, in particular to a wireless self-service ordering system.

Background technique

With the growth of catering business volume, the traditional ordering operation process can no longer meet the existing needs in large catering enterprises. The traditional way of ordering food basically relies on manual operation, which has the following disadvantages:

1. During the peak dining period, the waiters cannot grasp the status of the table at any time, so that they cannot serve customers quickly;

2. During the dining process of customers, manual transmission of documents wastes time, reduces work efficiency, and increases labor intensity of employees;

3. When operating a large-scale cuisine, there are many documents and a large amount of information, and the links such as order distribution and dish delivery are complicated. The more people pass by, the more likely problems will occur, resulting in misoperation, which directly affects the service quality;

4. The entire process of ordering food is restricted by the implementation of each link, and ordering food cannot achieve efficient information synchronization with the kitchen and front desk;

5. The traditional working mode of the cash register is to manually add up or input the total consumption of all items in the cash register in the quadruple bill opened by the waiter. This part of the work is not only slow, but also very prone to errors. Due to the manual checkout and cashier mode, this determines that the cashier cannot provide the manager with the business data information needed for operation management in a timely manner, such as: per capita consumption, turnover rate, and what are the most popular dishes? , the dietary preferences of each member customer, the monthly work performance of each waiter and other report data. Without such real-time information, it is impossible to adjust the direction and thinking of operations in a timely manner, leaving management in a state of lag, thereby affecting and restricting the long-term development of the enterprise.

Contents of the invention

The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned prior art, and to provide a wireless self-service ordering system, which uses advanced electronic information communication technology to manage the daily operation of the restaurant quickly, safely, efficiently and stably , accurate, timely and rapid data transmission, intuitive display, saving labor costs, improving service quality and management level, enhancing brand image and core competitiveness of the industry.

The technical solution adopted by the utility model is: the wireless self-service ordering system, including: a cash register computer equipped with order management account statistics software, a wireless self-service ordering machine distributed on each dining table, a single-chip microcomputer of a kitchen terminal, The touch screen display module and touch screen control module; the cash register computer and the bridge connected to it, the coordinator distributed in the restaurant, the router, and the wireless self-service ordering machine distributed in each table together form a wireless data mesh network. The single-chip microcomputer of the terminal is connected with the computer serial port of the cash register by RS-485 bus.

In the above-mentioned technical scheme, the wireless self-service ordering machine distributed at each dining table includes: a liquid crystal display screen, a single-chip microcomputer, a wireless transceiver module, an operation keyboard or a touch screen control, and a display module; the single-chip microcomputer is used as the core for connection.

In the above technical solution, the wireless transceiver module is a zigbee wireless transceiver module.

The technical effect of the utility model lies in: it can manage the daily operation of the restaurant stably, safely and effectively, such as ordering and cashiering, discount promotion, member management, payment after work, report query, etc.; it can realize background monitoring and remote monitoring of management personnel The query function; it can realize the function of splitting orders in the kitchen, saving labor costs and improving delivery efficiency; saving material costs and improving order efficiency. The service and management of the catering industry have been substantially improved, and at the same time, the brand image and the core competitiveness of the industry have been improved.

Description of drawings

Fig. 1 is a schematic diagram of the system structure of the present utility model;

Fig. 2 is the wireless transceiver circuit diagram of the present utility model;

Fig. 3 is the microprocessor interface circuit diagram of the present utility model;

Fig. 4 is the keyboard interface circuit diagram of the present utility model;

Fig. 5 is the circuit diagram of the kitchen touch display screen of the present utility model;

Detailed ways:

Referring to Figure 1, this wireless self-service ordering system includes: a cash register computer equipped with order management and account statistics software, a wireless self-service ordering machine distributed on each table, a single-chip computer in the kitchen terminal, a touch-screen display module and a touch-screen Control module; the computer at the cash register and the bridge connected to it, the coordinator distributed in the restaurant, the router, and the wireless self-service ordering machine distributed at each table form a wireless data mesh network. The single-chip computer of the kitchen terminal and the cash register The computer serial port is connected by RS-485 bus. The wireless self-service ordering machine distributed at each table includes a liquid crystal display, a single-chip microcomputer, a wireless transceiver module, an operation keyboard or a touch screen control, and a display module; the single-chip microcomputer is used as the core for connection. Described wireless transceiver module is zigbee wireless transceiver module.

The coordinator is the core of the network, which can be connected to the router or directly to the ordering machine;

The router establishes the data communication between the order machine and the coordinator. In the indoor environment, due to factors such as building blockages, when the communication distance of a PC-side coordinator cannot cover the entire application site, it should be configured at an appropriate location according to actual needs.

The bridge is a special node, which establishes the data communication between the network and the cashier management system, and the bridge establishes the data communication between the coordinator and the cashier computer, and it is connected to the serial port of the cashier computer through the serial port;

See Figure 2, the ZigBee transceiver uses the CC2430 chip, which has excellent wireless receiving sensitivity and strong anti-interference. The CC2430 integrates a ZigBee radio frequency (RF) front end, memory and microcontroller on a single chip. It uses a 8051 microcontroller core with high performance and low power consumption, with 128KB programmable flash memory and 8KB RAM.

The circuit uses an unbalanced antenna, connecting an unbalanced transformer can make the antenna perform better. The unbalanced transformer in the circuit is composed of capacitor C4, inductors L3, L2, L1 and a PCB microwave transmission line. The whole structure meets the requirement of RF input/output matching resistance (50Ω). R1 and R2 are bias resistors, and R1 is mainly used to provide a suitable working current for the 32MHz crystal oscillator. A 32MHz crystal oscillator circuit is formed with a 32MHz quartz resonator and capacitors C1 and C2. A 32.768kHz crystal oscillator circuit is formed with a 32.768kHz quartz resonator and capacitors C6 and C7. Capacitors C3 and C5 are decoupling capacitors, which are used to filter the power supply to improve the stability of the chip. This design can either use a PCB antenna to save volume, or use an external omnidirectional antenna to increase the communication distance. CC2430 is responsible for wireless receiving and sending, it communicates with ATmega128 microcontroller through the serial port, and communicates with the bridge on the service desk PC through the RF wireless transceiver.

Referring to Figure 3, the high-end 8-bit AVR microcontroller ATmega128L is the core, responsible for keyboard processing, display control and serial communication with CC2430.

ATmega128L is an 8-bit microcontroller based on AVR RISC structure produced by ATMEL in 2001 using low-power CMOS technology. It is currently the most powerful MCU in the AVR series. ATmega128L adopts Harvard structure inside, and its speed can reach 16MIPS when using 16M clock.

ATmega128L has abundant resources and extremely low energy consumption. It has 128KB program memory (Flash) and 4KB data memory (SRAM) on-chip. It can be expanded to 64KB and 4KB E ² PROM.

The liquid crystal display adopts a 3510i color liquid crystal display with a controller S1D15G14. The S1D15G14 is attached with an LCD driver with an LCD power supply drive circuit, which can realize color display on a single chip, can display 4096 colors, and has a resolution of 98×67. It is connected with the microcontroller ATmega128 by serial port. The reset pin RESET, chip select pin CS, data transmission pin SDATA and clock SCLK of the liquid crystal display are respectively connected with PA4, PA3, PA2, and PA1 of the single-chip microcomputer.

Referring to Figure 4, PC0-PC3 of the ATmega128 single-chip microcomputer is used as the row line, PC4-PC7 is used as the column line, and the determinant keys are used, and there are 16 keys in total. Wherein there are ten number keys 0-9, which are used to input menu codes, four cursor keys up, down, left and right, an "OK" key and a delete key.

Referring to Figure 5, the kitchen terminal is composed of AT89C51 single-chip microcomputer, RA8835 touch screen display module, and ADS7846 touch screen control module.

The AT89C51 single-chip microcomputer is connected with the serial port of the service desk PC through the serial port (P3.0--RXD, P3.1--TXD) using the RS-485 bus;

RA8835 is a new version of LCD control chip launched by Taiwan Ruiyou Technology Co., Ltd., which contains a powerful I/O buffer. RA8835 supports mixed display of text and graphics.

AD0～AD7 are the three-state data bus of RA8835 directly connected to the P0 port of 8051; CS is the chip select signal, RD pin is the read operation signal, WR pin is the write operation signal, A0 is the I/O buffer selection signal, when A0 When it is 0, write data parameters and read busy flag; when A0 is 1, write instruction code and read data; these 4 pins are respectively connected to P1.0, P1.1, P1.2 and P1.3 of the microcontroller .

ADS7846 is a four-wire touch screen controller produced by BB Company, which can be widely used in resistive touch screen systems. The core of ADS7846 is a 12-bit successive approximation A/D converter with sampling and holding functions, its conversion rate can reach 125kHz, and the resolution can be programmed as 8 or 12 bits. The device not only has X and Y coordinate measurement functions, but also has four measurement functions of battery voltage, chip temperature, touch pressure and external analog. In addition, the ADS7846 also integrates a touch recognition circuit. When a touch is detected, the circuit will output a low level signal on the PENIRQ (pen interrupt) pin, and use this signal to propose an interrupt for measuring the contact coordinates to the microcontroller. ask.

TX+, TX-, 1Y+, TY- of ADS7846 are position input terminals, which respectively correspond to the four-wire interface of the four-wire resistive touch screen; BUSY is the busy signal indication. The high-level state that can last for one clock cycle during data conversion, when TCS is high, BUSY is in a high-impedance state; TCS is a chip select input, only when TCS is low, serial data can be read from DIN;

DIN is the serial data input, and the data is read in at the rising edge of DCLK;

DOUT is serial data output, which is used to output the converted touch point position data. In 12-bit working mode, the maximum value is 4095, and the data can be output on the falling edge of DCLK. When TCS is high, DOUT is in a high-impedance state;

DCLK is an external clock input pin, and the frequency of its input clock signal determines the conversion speed of the circuit;

PENIRQ is the pen interrupt pin, when a touch event occurs, it can apply for interrupt service to the microcontroller;

DCLK, TCS, DOUT, DIN, and PENIRQ are respectively connected to P2.0, P2.1, P2.2, P2.3, and P3.2 of the microcontroller.

System workflow:

The customer orders food on the seat, and the waiter standing aside enters the dish name number and quantity through the handheld self-service ordering machine to process the customer's order, and sends the menu after the order is completed. Customer menus are automatically uploaded to the cashier and kitchen through the ZigBee network in the lobby. The printer at the cash register will print out the consumption list immediately, and the waiter will send the consumption list to the guest's table for preparing dishes, thus completing the entire ordering process. At the same time, the data is written into the database for use at the checkout counter at the cash register.

Claims (3)

1. A wireless self-service ordering system is characterized in that comprising: a cash register computer, a wireless self-service order machine distributed at each dining table, a single-chip microcomputer, a touch screen display module and a touch screen control module of a kitchen terminal; the cash register computer and the The connected bridge, the coordinator distributed in the restaurant, the router, and the wireless self-service ordering machine distributed in each table together form a wireless data mesh structure network. The single-chip computer of the kitchen terminal and the computer serial port of the cash register adopt RS-485 bus connect. 2. The wireless self-service ordering system according to claim 1, wherein the wireless self-service ordering machine distributed on each dining table comprises: a liquid crystal display, a single-chip microcomputer, a wireless transceiver module, an operation keyboard or a touch screen control, and a display module; Connect with the single-chip microcomputer as the core. 3. The wireless self-service ordering system according to claim 2, characterized in that said wireless transceiver module is a zigbee wireless transceiver module. the

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