The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2014
Filed:
Apr. 11, 2012
Toshiya Matsuoka, Kaizu, JP;
Masayuki Motomura, Komaki, JP;
Takeshi Sugiyama, Gifu, JP;
Keisuke Tashima, Kasugai, JP;
Hitoshi Yokoi, Ama, JP;
Toshiya Matsuoka, Kaizu, JP;
Masayuki Motomura, Komaki, JP;
Takeshi Sugiyama, Gifu, JP;
Keisuke Tashima, Kasugai, JP;
Hitoshi Yokoi, Ama, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
There is provided a fine particle detection system with a fine particle sensor, a cable and a sensor drive control device. The fine particle sensor has an ion source unit with first and second electrodes, a particle charging unit and inner and outer sensor casings. The cable has a power supply wiring line connected to the second electrode, an inner shield line electrically continuous with the inner sensor casing and an outer shield line electrically continuous with the outer sensor casing. The sensor drive control device has an ion-source power supply circuit, a signal current detection circuit, an inner circuit casing electrically continuous with a first output terminal of the ion-source power supply circuit and surrounding the ion-source power supply circuit and an outer circuit casing connected to the ground potential and shielding the ion-source power supply circuit, the signal current detection circuit and the inner circuit casing.