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>From: "B MORTIMER" <bmort@norton.ctech.ac.za> >Organization: Cape Technikon, South Africa >To: sowacs@aqua.ccwr.ac.za >Date: Wed, 11 Sep 1996 11:03:43 GMT+2 >Subject: introduction >Reply-To: bmort@norton.ctech.ac.za >Priority: normal >Sender: owner-sowacs@aqua.ccwr.ac.za > >Hi all who might be on this list. > >One of my research assistants found the SOWACS list by accident. So >here we are.. > >Our interest in soil moisture measurement over the last two years has >resulted in several projects which may be of interest to you. We have >been looking at dielectric based measurement sensors. So far we have >had success with capacitive sensors for oil quality assessment (for >refineries). The soild moisture problem is a much more difficult >problem, but we are trying some novel techniques. > >The lab is called : Centre for Instrumentation Research and is part >of the School of Electrical Engineering at the Cape Technikon. >Research leaders are myself (Bruce Mortimer), Jon Tapson and Q Smit. >You can see some of the work on the www - >http://www.ctech.ac.za/ElecEng/CIR/ > >I have come across a rather unusual approach by Dr Jim Sabbatier >(JASA) that could possibly be used in moisture measurement; he uses >an acoustic source and two microphones (one is a geophone) to capture >the surface and ground wave in the soil. Using clever acoustics and >DSP you can apparently discriminate between dry and wet soil, root >health etc. My understanding of the papers though leads me to >conclude that this technique is a long way from production. > >I would be very interested to hear what aspects of moisture >measurement members of this discussion group are busy with. > >Regards > >Bruce Mortimer > >(Senior Lecturer) >School of Elec Eng >Cape Technikon >BMORT@norton.ctech.ac.za > > Visit our WEB site (www.SmartRain.com) and all your problems may be solved. Romain Gagnon eng President & C.E.O. Smart Rain Corporation inc 1505, Place de l'Hotel de Ville, suite 102 St-Bruno, Quebec, Canada --- J3V-5Y6 E-mail: RGagnon@SmartRain.com Phone: 1-514-441-4289 FAX: 1-514-441-2147 Cell: 1-514-893-6506 WEB: http://www.SmartRain.com Romain Gagnon eng President & C.E.O. Smart Rain Corporation inc 1505, Place de l'Hotel de Ville, suite 102 St-Bruno, Quebec, Canada --- J3V-5Y6 E-mail: RGagnon@SmartRain.com Phone: 1-514-441-4289 FAX: 1-514-441-2147 Cell: 1-514-893-6506 WEB: http://www.SmartRain.com