| 摘要 |
PURPOSE:To obtain a network of multi-lines with long distance communication and high noise proofing property even if power consumption is low by constituting a wireless communication network utilizing a spread spectrum communication repeater station. CONSTITUTION:Terminal equipments 9a-9c are connected to a spread spectrum communication repeater station equipment 8d, and a mobile object 10 is connected to a spread spectrum communication repeater station equipment 8e. The repeater station equipments 8d, 8e are connected to a site computer 3a via a repeater station equipment 8a. In this case, the factory or the plant is managed finally by a host computer 1 and it is connected to the terminal equipment 9 via a production management computer 2 and the site computer 3. The connection between the site computer 3 and the terminal equipment 9, the mobile object 10 is implemented by the spread spectrum communication employing a microwave or the like. Furthermore, the repeater station equipment 8 revises the spread code used for the spread spectrum communication to relay between a host equipment and a subordinate equipment and prevents crosstalk from other repeater station equipment by revising the spread code. |
