Vehicle electronic controller

• US 20050049768A1
• Filed: 10/04/2004
• Published: 03/03/2005
• Est. Priority Date: 05/22/2002
• Status: Active Grant

• Current Assignee: Masaru Yokochi, Tanaka Yasuhiro
• Original Assignee: Masaru Yokochi, Tanaka Yasuhiro
• Inventors: Yokochi, Masaru, Yasuhiro, Tanaka
• Granted Patent: US 7,020,550 B2
• Time in Patent Office: Days
• US Class Current: 701/36
• CPC Class Codes: F02D 11/105 characterised by the function converting demand to actuation, e.g. a map indicating relations between an accelerator pedal position and throttle valve opening or target engine torque
• CPC Class Codes: G01R 31/007 using microprocessors or computers
• CPC Class Codes: G01R 31/2829 Testing of circuits in sensor or actuator systems testing of apparatus for measuring electric or magnetic variables G01R35/00; testing of indicating or recording apparatus G01D; in airbag systems B60R21/0173; checking gas analysers G01N33/007; monitoring or fail-safe circuits for electromagnets H01F7/1844
• CPC Class Codes: G05B 23/0224 Process history based detection method, e.g. whereby history implies the availability of large amounts of data

Abstract

A vehicle electronic controller for checking a control microcomputer with a common monitoring IC, which is used in different vehicles. The vehicle electronic controller includes a control microcomputer, which calculates control data to control an actuator installed in a vehicle in accordance with a driving condition of the vehicle, and a monitoring IC, which is connected to the control microcomputer and checks whether or not the control data is normal based on a determination value. The control microcomputer provides the determination value to the monitoring IC. The monitoring IC includes a memory device, which stores the determination value in a rewritable manner. The monitoring IC receives the determination value and stores the determination value in the memory device.

Claims

1. An electronic controller for a vehicle having an actuator, the electronic controller comprising:

a control microcomputer for calculating control data to control the actuator in the vehicle in accordance with a driving condition of the vehicle; and

a monitoring IC connected to the control microcomputer to check whether the control data is normal using a determination value, wherein the control microcomputer sends the determination value to the monitoring IC, and the monitoring IC includes a memory device for storing the determination value in a rewritable manner.