Nitrogen gas heater has been used in propylene refine to heat the regeneration nitrogen gas

aimed with network of LonWorks FCS technique

adopting PID algorithm of feedfront control and by cycle adjust to control heat power of electricity heat tube to ensure that continuous output high temperature nitrogen of constant temperature in set time. The kernel technigue of control network is neuron chip

intelligent net node and LonTalk communication protocol. In this paper we introduce LonWorks technigue

total project of control system of nitrogen gas heater

design of network structure design and configure of node model

design of control circuit and control algorithm and software programme.