I. Introduction
The GAM system is launched on the basis of the intelligent weighing management system, covering the entire process of enterprise procurement, production and sales
The automation system of the project. It has achieved unmanned operation of on-site weighing instruments and centralized process monitoring, and has been applied to the enterprise's logistics and production processes
The automatic collection, processing and handling of measurement data during the process provide enterprises with a stable, reliable and accurate data foundation.
Decision-making basis and information technology guarantee. Domestic enterprises such as Laiwu Steel and Tangsteel have begun to pay attention to unmanned operation and conduct discussions and research on it.
Depending on the on-site conditions and user requirements, GAM systems can be classified into small-scale systems (GAM-I) and large-scale systems
(GAM- II) and distributed Systems (GAM- III). This article will focus on introducing large-scale GAM systems. Nanjing Iron and Steel, etc.
Many domestic steel, coal and Sinograin enterprises have successfully applied the GAM system to achieve unmanned operation of weighing systems
Information-based management of data.
Ii. GAM System Architecture
The architecture of the GAM system is shown in Figure 1. The entire system adopts a design pattern of centralized management and distributed monitoring, and all
The business data (including data, voice, images, control signals, etc.) is processed through the GAM intelligent terminal software system
The ground is processed and interacts with the control center through a dedicated optical fiber network for metering. The system design adopts a three-tier architecture: the data base
The information and data exchange among the three layers of data - the foundation layer, the data management layer, and the business application layer - is carried out through a dedicated optical fiber network for metering
At the same time, network redundancy design is carried out for the metering private network.
The basic data of each metering station in the data foundation layer is read from the instrument data and recorded by the camera through the GAM machine
Frequency, infrared detection and collection, voice intercom interaction, IC/RFID card information collection, instrument status command control, etc., basic
The data layer, serving as the data support for system operation, adopts a mode design that combines local and remote control to enhance system operation
Reliability.
The server cluster of the data management layer metering monitoring center is the core hub of the entire system, responsible for the entire metering system
Management, operation, control and interaction with ERP and other business systems.
The metrologists in the remote monitoring center of the business application layer can achieve remote metrology by authorizing the use of the business application system
Business operation and remote metering monitoring.
Iii. Composition of the GAM System
The entire GAM system consists of hardware and software. The hardware includes GAM terminals, anti-cheating systems, remote control centers, and video surveillance systems. The software includes system Settings module, image capture module, electronic tag module, sales management module, statistical query module, procurement management module, IC card management module, logistics dispatching module, information fitting module, fingerprint recognition module, etc. The GAM terminal process: The driver holds the card and drives the vehicle onto the scale. When the vehicle stops at a suitable position, the driver gets off and swips the card
The vehicle information is read by the card or IC card, and the vehicle information is verified by the ID card at the same time, which is determined through the system's GAM mainboard
Check whether the information in the IC and ID cards is consistent to effectively reduce cheating, and at the same time, cooperate with the interaction of the voice module and the weighing instrument
Display control is carried out. The LED display screen shows the corresponding information, the printing module prints the measurement receipts, and the information is uploaded to the company's accounting department
The dedicated database for measurement is completed. The anti-cheating system for vehicle underloading identifies the vehicle's position through infrared limit switches to prevent vehicle damage
Edge pressing and out-of-bounds; Compare whether the vehicle information in the electronic tag and the IC card is consistent to prevent drivers from cheating when changing vehicles or cards.
During the weighing process, there is a comparison of the vehicle's tare weight and monitoring of the weighing slope, effectively preventing remote control cheating through the weighing sensor.
The remote control center is connected through database servers, streaming media servers, application servers, task servers, and storage
The server, in conjunction with the switch, optical transceiver and monitoring computer, realizes the tasks of data integration, computing, storage and metering
A reasonable distribution.