Technical textiles are used primarily for their technical functionality in many different industries. For monitoring the functionality of textiles it is possible to integrate sensors into the textile. Since textiles are made of fibres, yarns, two-or three dimensional structures the sensor systems should accordingly be designed as a part of them. Smart textiles are concerned with textile based sensors integrated mechanically and structurally to a textile. The state of the art in developing textile based sensors extends from sensor fibres to over coated yarns and textiles but without using standardized tools. The development of a textile sensor and its interpretation on a specific application has been associated with many investigations into combination of different conductive materials, what is a lengthy and costly developing process. Knowledge has already been generated on textile sensors, which now requires an appropriate classification and structure. A classified catalogue which allows a direct selection of textile based sensor modules on the basis of measured values. The catalogue´s structure follows, apart from the VDI- guideline 2222, of which complex coherences can be arranged and a clear representation can be found. Setting standards in the field of smart textiles helps companies to produce more smart products.