Fruit and vegetable logistics fresh-keeping transportation control system

[0023] The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings:

[0024] A kind of fruit and vegetable logistics preservation and transportation control system, such as figure 1 As shown, it includes a node controller, a main controller, and a fruit and vegetable preservation and transportation monitoring server. The main controller is connected to several node controllers through a wireless sensor network, and the main controller is connected to a fruit and vegetable preservation and transportation monitoring server through a mobile communication network. Together. The node controller collects the temperature, humidity, oxygen, ethylene, carbon dioxide and other data in the fruit and vegetable preservation transportation vehicle through a variety of sensors and transmits the above data to the main controller and the main controller transmits the data to the fruit and vegetable preservation and transportation monitoring server, and the fruit and vegetable preservation and transportation The monitoring server receives various information uploaded by the main controller and sends corresponding control commands to the main controller after analysis and processing, and the main controller performs corresponding temperature and humidity control operations. The main controller of the control system can be made into a vehicle-mounted embedded terminal and installed on the fruit and vegetable preservation transport vehicle. The node controller can be used as a packing box module for data collection such as temperature, humidity, and gas content. The fruit and vegetable preservation and transport monitoring server is installed in Inside the Fruit and Vegetable Logistics Monitoring Center. The three components of the system are described below:

[0025] Such as figure 2 As shown, the node controller includes a microprocessor, temperature sensor, humidity sensor, oxygen sensor, ethylene sensor, carbon dioxide sensor and wireless module. 2 The C interface is connected to the temperature sensor, the humidity sensor, the oxygen sensor, the ethylene sensor, and the carbon dioxide sensor are connected through the A/D conversion interface, and the wireless module is connected through the SPI interface. The wireless module is connected to the main controller through the wireless sensor network Connected. In this embodiment, the microprocessor adopts ATMEGA16 single-chip microcomputer; the temperature sensor adopts DS18B20 digital temperature sensor produced by Dallas Semiconductor Company. The temperature sensor adopts single-bus interface technology, that is, one wire is used for data transmission, which can directly read the data. Measure the temperature value of the object, and provide power for the device through the line; the humidity sensor adopts the HIH4000-003 humidity sensor produced by Honeywell, which has the characteristics of simple interface and high accuracy; the oxygen sensor adopts the electrochemical oxygen sensor 70X -V; ethylene sensor adopts ethylene sensor module 4P-50; carbon dioxide sensor adopts E2V-IR11BD sensor; wireless module adopts CRM2400ANC, which adopts a completely transparent transmission protocol, and has a high cost performance in short-distance wireless transmission. This wireless module Responsible for transmitting the information collected by various sensors to the main controller.

[0026] The working process of the node controller is: the microprocessor joins the wireless sensor network through the wireless module, and waits for the acquisition instruction of the main controller. When receiving the instruction, collects the temperature, humidity, oxygen, ethylene, carbon dioxide data and passes the wireless module Send sensor data to the main controller.

[0027] Such as image 3 As shown, the main controller includes ARM embedded microcontroller, wireless module, RFID reader, GPS module, temperature/humidity control module, SMS communication module, Internet connection module, electronic door lock, camera, memory card, LCD display , Navigator, ARM embedded microcontroller is connected with wireless module through SPI interface, ARM embedded microcontroller is connected with RFID reader, GPS module, SMS communication module, Internet connection module, electronic door lock through RS232 interface, ARM The embedded microcontroller is connected to the navigator through the UART interface. The ARM embedded microcontroller is connected to the temperature/humidity control module and the LCD display through the I/O interface. The ARM embedded microcontroller is connected to the camera through the USB interface. The embedded microcontroller is connected to the SD memory card through the SPI interface. In this embodiment, the ARM embedded microcontroller uses the AT91SAM9263 chip; the wireless module uses CRM2400ANC, which uses a completely transparent transmission protocol, and has a high cost performance in short-distance wireless transmission. The wireless module receives the data transmitted by the node controller. Various information of the fruit and vegetable preservation truck; the RFID module uses the ZLG500B14 reader, which supports Mifare1 S50/S70, Mifare0 ultralight, Mifare Pro, Mifare desfire and other types of radio frequency cards; the ZLG500B14 reader uses The RFID card uses Mifare radio frequency card Mifare1 S50. The EEPROM in the card stores the goods information such as the item number and destination of fruits and vegetables; the GPS module uses the G-MOUSE receiver, which sends the GPS receiver to the ARM system board via the serial port every fixed time. The location information of the vehicle; the SMS communication module adopts the dual-band GSM/GPRS module Q2403A produced by French WAVECOM company. This module can directly use the SIM card issued by the mobile communication company. The SIM card number can be used as the sender address or the destination address, and the short Information is stored in the SIM card; the Internet connection module adopts GPRS/3G module, which is used to connect with the fruit and vegetable preservation and transportation monitoring server for data communication; the LCD display can display the menu and various information on the main controller; the navigator is used as The vehicle navigation equipment is the navigation of the fruit and vegetable preservation transportation vehicle; the electronic door lock and the camera record and monitor the opening of the door; the memory card saves the video data.

[0028] The working principle of the main controller is: with the ARM embedded microprocessor as the core, the RFID reader is used to read the RFID card on the packing box during the loading and unloading of fruits and vegetables to obtain the batch, type, origin, and destination of the fruits and vegetables. And other information; obtain the environmental information in the refrigerated truck fruit and vegetable logistics through the wireless sensor network; obtain the position information of the fruit and vegetable refrigerated and fresh-keeping transport vehicle through the GPS module; the main controller sends the fruit and vegetable fresh-keeping transport monitoring server through the SMS communication module or the Internet connection module (backstage Fruit and vegetable logistics center) send the environmental information in the refrigerated truck fruit and vegetable logistics or the location information of the fruit and vegetable refrigerated and fresh-keeping transport vehicle; receive the instructions sent by the fruit and vegetable fresh-keeping transportation monitoring server through the SMS communication module or the Internet connection module, and control the fruits and vegetables through the temperature/humidity control module The temperature and humidity of the fresh-keeping transport vehicle; the opening of the door is monitored and recorded by the electronic door lock and camera. The main controller uses ARM embedded microprocessor as the core to monitor and transmit environmental information, cargo information, and vehicle location information in refrigerated truck fruit and vegetable logistics, and realize wireless sensor data reception, fruit and vegetable refrigerated and fresh-keeping transport truck positioning, GSM alarm and Receiving commands, reading and displaying RFID cards of fruit and vegetable packaging boxes, recording relevant data on the car, and recording the opening of the door.

[0029] Such as Figure 4 As shown, the fruit and vegetable preservation and transportation monitoring server is composed of a computer, a short message communication module, and an Internet connection module. The fruit and vegetable preservation and transportation monitoring server is installed in the fruit and vegetable logistics monitoring center. The monitoring center is connected to the main controller through a mobile communication network and communicates through short messages. The module or the Internet connection module receives the data sent by the main controller, and can perform scientific scheduling based on the fruit and vegetable preservation environment information, vehicle location information and cargo information, and send the scheduling instructions to the main controller through the SMS communication module or the Internet connection module.

[0030] The specific functions and data processing process of the fruit and vegetable preservation transportation monitoring server, such as Figure 5 Shown. The fruit and vegetable preservation environment information (temperature, humidity, oxygen, ethylene, carbon dioxide), vehicle location information (GPS) and cargo information data transmitted to the fruit and vegetable preservation transportation monitoring server, through the fruit and vegetable quality evaluation model, can obtain the current quality status of the fruit and vegetable; The fruit and vegetable quality prediction model can predict the shelf life of fruits and vegetables. According to the obtained fruit and vegetable quality status and shelf life, it can be used to assist in the decision of whether to adjust the storage environment or adjust the transportation route. If you need to adjust the storage environment, send control signals to adjust the temperature and humidity; if you need to adjust the path, the fruit and vegetable preservation transportation monitoring server will send the new path information to the LCD on the refrigerated truck according to the GPS signal transmitted and combined with the GIS system Screen and navigator. In addition, the central fruit and vegetable preservation and transportation monitoring server can also display the location of the refrigerated truck in real time based on the GPS signal transmitted and combined with the GIS system.

[0031] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manners. Anyone skilled in the art will use the technical solutions of the present invention. Other obtained implementation manners also belong to the protection scope of the present invention.