Ngk Spark Plug Company, Limited

Toshio Nakanishi

Katsunori Yazawa

Kaoru Hisada

Hiroshi Inagaki

Yoshinori Inoue

Yuichi Goto

Wenjing Ma

A measurement apparatus includes a plurality of modules and a main unit for collecting measurement data output from the modules. The housing of the main unit can be carried by a user of the measurement apparatus, and the plurality of modules are removably accommodated in the housing. A controller area network interface circuit of the main unit collects the measurement data output from the modules accommodated in the housing. A main CPU of the main unit outputs the collected measurement data to, for example, a personal computer connected to the main unit. An internal memory and a USB memory connected to a USB memory module store the collected measurement data.

Modular measurement apparatus

A particulate measurement apparatus controls a particulate sensor which includes an ion generation section (), an exhaust gas electrification section (), an ion trapping section (), and a second electrode (). The second electrode () is maintained at a potential repulses the ions to assist the trapping of the ions at the ion trapping section (). The particulate measurement apparatus includes a second isolation transformer (b) and an auxiliary electrode current measurement circuit (). The second isolation transformer (b) applies a voltage to the second electrode () through a second wiring line (). The auxiliary electrode current measurement circuit () detects an auxiliary electrode current Iflowing to the second wiring line (). The particulate measurement apparatus determines at least one of the state of the particulate sensor and the state of the second wiring line () based on the auxiliary electrode current I.

Particulate measurement apparatus and particulate measurement system

Growing community of inventors

Niwa-gun, Japan

Toshio Nakanishi