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This paper describes the development and system integration of a non-cooled industrial thermal imaging system (ITIS) based on an uncooled linear array 1 X 128 pyroelectric detectors and internal scanner and the concept of multisensor industrial thermal imaging system for inspection/monitoring thermal processes or hazardous environments. In previous time, as first step, was developed a thermal imaging system in which was a two dimensional capability is reached with mounting of the camera on the precise programmable positional unit that exhibits positioning capability in 2 D.o.F. (degree of freedom). As a second stage of a developing an industrial thermal imaging system was mechanical design and construction of an internal scanner for linear array. Internal scanner has ability to create two-dimensional frame with selectable numbers of rows (from 1 to 128). Frame rate is depending on a numbers of rows in a frame (from 128 Hz to 1 Hz) and software averaging. The measured NETD of a thermal imaging system, without frame averaging, is better than 0.5 degrees Celsius (for lens with F equals 0.7 at 300 K). The digital part of a camera is equipped with 32 bit floating point digital signal processor (SHARC, Analog Devices), fieldbus controller (COM20020, SMCS, with implemented low-level protocol ARCNET ANSI ATA 878.1 with data rate 5 Mbit per second) and fieldbus interfaces (for twisted pair and coaxial cable). The positional unit was also attached with fieldbus controller. This paper also deals with a conceptual design of a multi- sensor and multi-actuator system based on a ARCNET Local Area Networks (LAN) with set of nodes like thermal or visible cameras, positional units and other necessary nodes.

Manufacturers need to improve their operating methods and increase their productivity so they can compete successfully in the marketplace. This goal can be achieved through factory automation, and the key to this automation is successful data base management and factory integration. However, large scale factory automation and integration requires effective communications, and this has given rise to an interest in various Local Area Networks or LANs. In a completely integrated and automated factory, the entire organization must have access to the data base, and all departments and functions must be able to communicate with each other. Traditionally, these departments and functions use incompatible equipment, and the ability to make such equipment communicate presents numerous problems. ARCNET, a token-passing LAN which has a significant presence in the office environment today, coupled with fiber optic cable, the cable of the future, provide an effective, low-cost solution to a number of these problems.

SUMMARY OF INFORMATION DESCRIBING LAN NETWORKSNetworkAccess ProtocolLine RateMaximum No. StationsMaximum Network SizeOptical Line Coding802.3 (Ethernet)802.4802.5 ARCNET PC Net FDDICSMA/CDToken Bus Token Ring Token Bus CSMA/CD Token Ring10 MHZ10 MHZ 4/16 MHZ 2.5 MHZ 10 MHZ 125 MHZ1024260/segment255 1000500 4.5km6.4km 4.8km 100kmManchester ManchesterMillerManchester 4B/5B TABLE IV Similar considerations apply to 802.3, 802.4, 802.5, Arcnet and PC NET systems. All of these networks optimally make use of IED emitter technology. Flux budget and therefore fiber attenuation is the limiting factor on distance.Different considerations apply to using PDF in FDDI networks. This proposed standard 3 uses 1300 nm LEDs and PIN detectors in the Physical layer specification. Distances limited by dispersion of up to 2 km between nodes can be supported within the draft FMD document.However, many FDDI nodes will be within a radius of 100 meters from a concentrater. Such work station hookups could be implemented with PDF (although this is not part of the present draft FMD standard).System design might be the following