发明名称 Sensor controller
摘要 A sensor controller for a particulate matter detection sensor includes a heater configured to heat an attachment portion so as to burn and remove particulate matter attached to the attachment portion, a learning portion for obtaining a sensor detection value immediately after burning and removing the particulate matter due to heating of the heater. The leaning portion calculates a sensor standard value based on the obtained sensor detection value in a state where the particulate matter is removed, and stores the sensor standard value as a learning value. Furthermore, a correcting portion corrects the sensor detection value based on the sensor standard value stored by the learning portion.
申请公布号 US9316574(B2) 申请公布日期 2016.04.19
申请号 US201113183585 申请日期 2011.07.15
申请人 DENSO CORPORATION 发明人 Sakamoto Yuuki;Matsuoka Mikiyasu;Matsumoto Yuuzou
分类号 F23N5/00;G01N15/06 主分类号 F23N5/00
代理机构 Nixon & Vanderhye P.C. 代理人 Nixon & Vanderhye P.C.
主权项 1. A sensor controller system configured to control the operation of an engine, the sensor controller system comprising: a particulate matter detection sensor; and a sensor controller comprising: a heater connected to the particulate matter detection sensor, the particulate matter detection sensor including an attachment portion to which conductive particulate matter contained in gas is attached, and a pair of opposed electrodes spaced from each other at the attachment portion, the heater heating, via the pair of opposed electrodes, the attachment portion so as to burn and remove the particulate matter attached to the attachment portion; and a computer processor connected to the particular matter detection sensor and the engine, the computer processor performing at least obtaining a sensor detection value, corresponding to a resistance between the pair of opposed electrodes, outputted from the particulate matter detection sensor immediately after the burning and removing the particulate matter due to heating of the heater, calculating a first sensor standard value based on the obtained sensor detection value in a state where the particulate matter is removed from the attachment portion, storing the first sensor standard value as a first learning value correcting a sensor detection value outputted from the particulate matter detection sensor based on the stored first sensor standard value, calculating an amount of attached particulate matter based on the corrected sensor detection value, outputting a control signal to the engine based on the calculated amount of attached particulate matter, and controlling the operation of the engine.
地址 Kariya JP