In the traditional packaging testing methods, it is impossible to realize real-time, on-line and non-contact testing to control the production process and improve the production efficiency and the qualified rate of products.  But the emergence of information intelligent packaging test technology can change the situation, USES the automatic and intelligent, identification and control by computer, minimal human intervention measurement process can be completed, this technology has the non-contact, measuring speed, high degree of automation, high precision, very suitable for the requirement of highly automated now.  

    Intelligent packaging technology is mainly to add bar codes, two-dimensional codes, RFID tags, sensors, etc., outside or on the surface of the packaging, display, display and convey the relevant packaging information through information and communication technology, and with the help of the packaging information data management system to achieve product storage, transportation, sales, recycling and other process management.  It can be applied in each production link of the packaging industry, from the material processing process, the first packaging, secondary packaging, final packaging, etc., the whole process provides many sensors for a variety of detection.  Key technologies for intelligent packaging:  

（一） PROFIBUS

    Fieldbus technology is a kind of data bus which can realize communication between intelligent devices in different fields of automation.  Packaging machinery enterprises can use THE ERP system as an auxiliary, combining the field bus technology with the latest bus technology, to understand the production of packaging in real time, and monitor the production of workshop in real time. 

（二） Switch automation control technology

    In packaging machinery, switch control is a common procedure, through positioning, reset, positioning process to achieve effective control of electrical appliances.  Switch control is an indispensable part of electrical automation system.  The use of automation technology in switching control can improve the stability of packaging machinery operation and reduce the impact of random factors.  At the same time, the power supply can be cut off immediately when an emergency occurs to reduce the occurrence of dangerous situations.  Only when automation technology is widely used in switch control, can precise and effective control of packaging machinery be achieved, emergency response be timely, effective response, orderly response and timely response be achieved.  In the actual operation process, the operator of packaging machinery only needs to input the corresponding data into the system, and achieve the purpose of precise execution of instructions through the sensor equipment of automation technology. If the packaging machinery wants to operate safely and stably, automation technology needs to provide support and help.  Only in this way can effectively improve the safety and stability of packaging machinery.  

（三） Closed-loop automatic control technology

    There are many different kinds of operation modes of packaging machinery in our country, such as control start in the field, automatic start and manual start beside the machine.  But if the automation technology is applied in the electrical automation control system, it can directly hit the purpose of automatic start next to the machine.  If this technology can be further promoted, the safety of packaging machinery can be improved, the stability of operation can be improved, the reliability of packaging machinery can be improved to a certain extent, the operation process can be optimized, and the automatic operation efficiency of packaging machinery can be improved to a higher level.