发明授权
- 专利标题： MESURE DE TEMPERATURE A L'INTERIEUR D'ENVELOPPES DE MATERIELS ELECTRIQUES SOUS TENSION.
- 专利标题（英）： Measuring the temperature inside housings of powered electric equipment
- 专利标题（中）： 温度变化温度电气温度。
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申请号： EP09745838.4申请日： 2009-05-15
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公开(公告)号： EP2283553B1公开(公告)日： 2011-11-02
- 发明人: JUGE, Patrice , FOURNET, Claude
- 申请人： AREVA T&D SAS
- 申请人地址： Tour Areva 1, place Jean Millier 92084 Paris La Défense Cedex FR
- 专利权人： AREVA T&D SAS
- 当前专利权人： AREVA T&D SAS
- 当前专利权人地址： Tour Areva 1, place Jean Millier 92084 Paris La Défense Cedex FR
- 代理机构： Ilgart, Jean-Christophe
- 优先权： FR0853184 20080516
- 国际公布： WO2009138506 20091119
- 主分类号： H02B13/00
- IPC分类号： H02B13/00 ; G01K11/26 ; H03H9/02
摘要：
The invention relates to SAW (acoustic wave reflection) sensors for measuring the temperature or other physical parameters in high-voltage electric equipment. One of the advantages of the sensors is that the same can be directly arranged on the part to be measured (2), wherein the heating occurs regardless of the electric current. The sensors are made of lithium tantalate with an X cross-section and orientations of Y + 112° and Y + 130° for the two resonators thereof. A differential measure is made for cancelling time variations due to the substrate ageing.
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