The application of Hongrun temperature controller in the air compressor scheduling management system of the power workshop of the pharmaceutical factory

1. Product introduction

Hongrun OHR-E300 artificial intelligence thermostat/regulator adopts real artificial intelligence formula, the instrument starts the self-tuning function, and can automatically find the optimal parameters according to the characteristics of the controlled object to achieve a good control effect, without manual self-tuning parameters. The temperature control accuracy is basically ±0.1°C, without overshoot and undershoot, reaching the international advanced level. It can be used with various sensors and transmitters to realize the measurement and display of physical quantities such as temperature, pressure, liquid level, capacity, force, etc., and cooperate with various actuators to PID adjustment and control, alarm control, data acquisition and other functions of electric heating equipment and electromagnetic and electric valves. It is suitable for industrial furnaces, electric furnaces, ovens, test equipment, injection molding machinery, packaging machinery, food machinery, printing machinery and other industries.

Second, the working principle and solution

In the LAN design of the pharmaceutical factory, optical fiber is used to control the operation of the two air compressors in the power workshop, and the scheduling management system is added to penetrate the Ethernet into the industrial site, so as to realize the seamless combination of office automation and industrial automation, and provide help for the dispatching room and chief engineer of the factory to make decisions at any time. Make full use of OHR series intelligent instruments to set up a fieldbus computer monitoring system, connect to the LAN and share information resources. The workshop, dispatching room, and factory-run computers form a peer-to-peer Ethernet network to realize the integration of resource sharing and control.

We decentralize the traditional server to the site as a server, install the WWW network version of the industrial control software in the computer, and the on-site instrument data is collected by the server in the form of digital signals and saved in the server.

Pressure, flow, temperature, displacement, liquid level, Traffic and other data are stored in the customer server WWW network version of the industrial control software database, on the computer according to the installation of 100M network card, connected to the optical fiber transceiver, through the four-core optical cable sent to 500 meters (up to several kilometers) at the 16 ports of 16 Gigabit adaptive hub (HUB) as the center of the enterprise LAN, so that the computer in the entire LAN becomes peer-to-peer Ethernet, and for each computer to assign an IP address, the parameters of the industrial field through the optical fiber rapid transmission of images and data, that is, to meet the actual needs and reduce the cost.

Any management machine in the enterprise network can exchange real-time process graphics data with the on-site server, and all computers become peer-to-peer Ethernet, and users can query on-site data and process parameters through the standard IE browser of their respective computers, which truly plays a role in resource sharing, simplifies complex network configurations, and saves hardware investment.

The network backbone uses optical fibers across the factory area to directly penetrate the optical cable and Ethernet technology into the workshop. The industrial site adopts a fieldbus computer monitoring system, and the smart instruments on the site are connected in parallel with super five types of shielded twisted pair cables, and 101 instruments (101 address codes) are hung on each bus, which are inserted into the serial port of the computer through the optical partition converter (RS232/RS485).

The link system of the whole network determines that the backbone line of the factory area adopts the optical cable structure, because the optical cable can eliminate the surface potential difference and other electromagnetic interference sources transmission frequency bandwidth, large amount of information, low transmission loss, long relay distance, confidentiality and reliability, light weight of optical cable, easy to construct. Multi-mode optical fiber should be used for computer LAN, when using optical fiber as the data backbone, generally use 4 cores, 6 cores, 8 cores, can be used overhead, groove trench laying, every 50CM bracket, the two ends of the optical cable welding pigtail need to be fixed in the optical fiber terminal box, to the wall according to the installation, pigtail and optical fiber transceiver joint to keep clean, so as not to affect the transmission, the hub should be installed in the center of the local area network, the subsystem using 5 types of standard unshielded twisted pair wiring. 100% compatible with mature Ethernet technology products, Ethernet application industrial site is the most ideal choice so far, can fully consider the future development needs, with high transmission rate, currently to 100Mbits/s, high transmission security and reliability, current collector technology certainty almost does not need to consider the topology of the network, transmission physical medium, twisted pair, optical fiber, coaxial cable, hub application can not consider the expansion of the network, the use of Windows98, NT, TCP/ The IP protocol forms a peer-to-peer Ethernet, which is easy to integrate with the public data network and can be used for global networking of the entire plant.

Software and hardware configuration:

On-site parameter acquisition Hongrun OHR series intelligent regulator

Fieldbus CAT5e shielded twisted pair (101 instruments on it)

Optical Partition Converter RS232/RS485 does not require initialization and is compatible with any software

Industrial computer, ordinary PC, brand machine, compatible machine

Operating platform Windows98, NT, 2000

Software WWW web version configuration software

Hubs 100 Gigabit Adaptive Hubs

Fiber Optic Transceiver 100M Multimode Fiber Optic Transceiver 2 km

Fiber optic cable G/G*TW outdoor overhead type 4 cores

Network cable: Super Category 5 twisted pair

III. Concluding remarks

In the current situation of competition in the field of fieldbus, it is a trend for fieldbus to move closer to Ethernet. It is reflected in the efficiency and benefits obtained by the enterprise, grasping the industrial site and enterprise operation status anytime and anywhere, and accurately and timely understanding the required information is the key, greatly improving work efficiency and achieving successful decision-making.　

With the rapid development of computer and network technology, most domestic production enterprises have successively established their own computer local area networks. You work in a highly automated office environment, your PC can access the Internet at any time, query and exchange information with others at any time, and on the other hand, you also need to know anytime and anywhere, in a certain workshop of the factory, there is a very advanced monitoring system, such as the fieldbus computer monitoring system formed by Hongrun OHR instrument. How to help you understand the production status of the workshop, such as the operation of the machine and the chemical reaction of the product, including the monitoring system can collect a lot of the data and information you need. If your on-site monitoring system is not connected to the network, it can only be used as an island of information that cannot be sent out smoothly.

Ethernet is currently the most widely used LAN technology in the world. With the rapid development of the Internet, Ethernet has become the de facto industry standard, and the simplicity and practicality of the TCP/IP protocol are accepted by the majority of users. With the development of communication, network technology and intelligent instruments, Ethernet technology has the ability to extend to the industrial site, that is to say, Ethernet can be built to the industrial site I/O level, so as to realize the seamless combination of office automation and industrial automation, and form a truly open and interoperable monitoring system. Due to the LAN layout generally using twisted pairs, the distance is controlled within 99 meters, and your workshop is far away from the management of several hundred meters to several kilometers, it is necessary to introduce Ethernet products, configure optical cables, optical fiber transceivers, and directly penetrate into the workshop computer to connect with the management, so that Hongrun instrument through the fieldbus to the Ethernet become a reality, play a real meaning of enterprise informatization.