Cold chain transportation vehicle monitoring terminal system structure

Jiu Tong Tonglian has been in the cold chain transportation monitoring industry for 12 years. It has now become the world's leading provider of mobile asset monitoring and management solutions. Many small partners are not very familiar with the structure of the monitoring system of cold chain transport vehicles. They do not know what features they have. Today, Longtong Wulian Xiaobian will give you a detailed explanation on the structure of the cold chain transport vehicle monitoring terminal system.

This product uses the Internet of Things technology to monitor the operating status of cold chain trucks throughout the entire process, all-weather, real-time, and wireless monitoring status. It is a demonstration project for new national GMPs and completely meets regulatory requirements of regulatory agencies to address cold chain truck transportation. The hidden danger of the goods, the system has the following functions: video monitoring module, compartment temperature monitoring module, door status monitoring module, fuel monitoring module, GPS positioning module and RFID item monitoring module. The use of modular ideas to develop to achieve the function of each module to facilitate the subsequent improvement and maintenance.

First, GPS positioning module

The GPS navigation function is implemented by porting open source software code or installing navigation software. GPS positioning information is uploaded to the server after being received, and is also stored on the hard disk so that other modules of the terminal can read and use it.

Second, the oil monitoring module

The oil quantity monitoring is mainly used for the server's post-processing and oil stealing. The current oil quantity is read by the vehicle's own oil dipstick (oil quantity sensor), the oil quantity data is uploaded and saved, and compared with the data measured last time. Whether it is abnormal, such as the reduction in fuel consumption is much faster than the fuel consumption when the vehicle is traveling, or the amount of oil when the vehicle is stopped. If the alarm is issued abnormally, "Please note that the amount of oil is abnormal, please check it!" At the same time, the video monitoring of the fuel tank is automatically opened.

Third, the door state monitoring module

It is used to detect the door switch status. The vehicle terminal displays the status of the door switch in real time to prevent accidental opening of the door and loss of goods. When the door is opened abnormally, an alarm message is generated to achieve active alarm for server-side monitoring and timely handling by the driver. .

As shown in FIG. 6 , the door state monitoring module judges the opening and closing of the door with the opening and closing of the limit switch. When the door is opened, it is judged whether it is abnormally opened, that is, it is determined based on the GPS information and the cargo information whether the pickup and unloading locations are. If it is abnormally open, it will record and issue an alarm and upload the server.

Fourth, temperature monitoring module

A plurality of temperature acquisition nodes are arranged in the vehicle compartment as required to collect the temperatures of different carriage positions of the carriages, and the collected temperature is transmitted to the on-board terminal, and at the same time, save, upload, display and abnormality judgment, if the temperature exceeds the set temperature range, The alarm prompts the driver to adjust the temperature. Temperature display through the temperature acquisition module to collect temperature information, the vehicle terminal to display the line chart help the driver to master the temperature changes in the compartment; temperature control is divided into manual control and automatic control, according to user needs to choose, manual control requires the driver according to the vehicle terminal The displayed temperature regulates the air-conditioning compressor; the automatic control controls the air-conditioning compressor through the on-board terminal.

Temperature monitoring module specific process shown in Figure 3. Every 1 minute (time can be freely set) Collect temperature once, record the collected data on the hard disk, and upload it to the server and the temperature line graph displayed on the main interface of the terminal, and at the same time, save the data with the saved temperature range. For comparison, if the set temperature range is exceeded, the alarm “Please note that the cabin temperature is abnormal!” Then the driver automatically or manually adjusts the cold press to control the cabin temperature.

V. RFID Item Monitoring Module

RFID specifically implements the following operations: 1 Entry of goods information in a tag. Cargo information is recorded when the goods are packaged or when the goods are loaded. The cargo information includes the loading location and the unloading location of the goods, the type, weight, number of the goods, the code of the goods information input operator, and so on. 2 label installation. After the tag information is collected, RFID tags are installed on the goods and registered when the goods enter or leave the car. The record information will be uploaded to the server and can be dispatched and commanded by the server. 3 Reader reads tag information. When the goods are on and off the vehicle, the tag information is read, stored and displayed on the vehicle terminal to remind the driver of the destination of loading and unloading, and uploading the server.

The RFID item monitoring module process is shown in Figure 5. Before the door is closed, the cargo information is read and recorded. When the door is closed, combined with the server instructions and GPS navigation information, the goods on the vehicle are classified and analyzed, and the contents of the goods carried on the vehicle and the delivered goods are obtained. Sorting for navigation, then uploading information and displaying it on the main interface of the terminal, while setting the temperature range according to the cargo information.

VI. Video Monitoring Module

The on-vehicle camera collects the image data of the doorway, the fuel tanks, and the driver according to actual needs and processes it. Image data collection and compression includes jpg format image acquisition and H264 format video capture; image data transmission using 3G network transmission; video data display, video display on the vehicle terminal can be selected by a camera Full-screen display; image data is saved in addition to the hard disk storage on the vehicle's terminal and uploaded to the server for storage.

The specific process of the video monitoring module is shown in Figure 2. The terminal judges whether the door is open or closed through the limit switch. When the door is opened, the camera mounted on the roof of the rear door of the refrigerated vehicle is used for video capture. Otherwise, the camera is closed. The speed obtained by GPS determines whether the vehicle state is running or stopped. When the vehicle is traveling, the camera that monitors the fuel tank and the door is turned off, the camera of the shooting driver is turned on to collect the photos and videos, and when the vehicle stops, the camera of the driver is turned off. , Open the camera monitoring video capture video. Collect data while processing, all videos are saved and uploaded, and the driver's photos are taken for image processing. Through the extraction of key features, it is judged whether or not it is fatigue driving. At the same time, it is combined with driving time. If it is, a prompt sound is played. Fatigue, please stop and rest!" and do a good job in history. When the driver invokes the video interface, the terminal also displays on the terminal's display screen in addition to uploading the video data.

Well, the structure of the monitoring terminal system for cold chain transport vehicles is introduced today. Cold chain logistics transport generally refers to the production, storage, transportation, and sales of chilled and frozen products. A systematic project to ensure the quality and performance of goods in the environment.

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