In-vehicle electronic control apparatus having monitoring control circuit
First Claim
1. An in-vehicle electronic control apparatus, having a monitoring control circuit, comprising:
- a main control circuit unit including;
a nonvolatile program memory storing a control program;
a RAM memory which stores calculation processing;
a first input interface circuit to which a first input sensor group is connected;
a first output interface circuit to which a first electric load group is connected; and
a microprocessor that controls the first electric load group, in response to contents of the control program and an operation status of the first input sensor group, anda monitoring control circuit unit including;
a question information generation unit that is connected through a first serial communication circuit to the microprocessor and that sequentially and selectively transmits a plurality of question information items to the microprocessor;
a correct-solution information storage memory that stores correct-solution information items that correspond to the question information items; and
an abnormality determination unit which determines whether an abnormality in the main control circuit unit exists by comparing answer information that is received from the microprocessor and that is provided in response to the question information items with the stored correct-solution information,wherein the main control circuit unit is connected to an external control apparatus through a second communication circuit,wherein the main control circuit unit receives control signals from the external control apparatus and transmits the control signals to the external control apparatus,wherein the external control apparatus is provided with collaborating supplementary apparatuses including;
supplementary-apparatus memories, each storing a control program that generates answer information items in response to the plurality of question information items transmitted from the main control circuit unit, where said answer information is transmitted to the main control circuit unit as supplementary-apparatus answer information, andsupplementary-apparatus microprocessors that collaborate with supplementary-apparatus program memories and executes the control program stored in the supplementary-apparatus program memories,wherein, the question information generation unit generates concurrent question information items that are applied to the main control circuit unit and all the external control apparatuses or discrete question information items that are discretely applied to the main control circuit unit and the external control apparatuses;
wherein the concurrent question information or the discrete question information items are transmitted from the monitoring control circuit unit to the main control circuit unit and transmitted from the monitoring control circuit unit to the external control apparatuses via the main control circuit unit,wherein the nonvolatile program memory includes a control program which constitutes a main-machine answer generation unit that generates main-machine answer information in accordance with the concurrent question information or the discrete question information items and a control program corresponding to a transmission answer edition unit,wherein the transmission answer edition unit edits the main machine answer information and the supplementary-apparatus answer information and transmits, as answer information, synthesis correct-solution information, the main-machine answer information, or the supplementary-apparatus answer information corresponding to the synthesis correct-solution information, the main-machine answer information, or the supplementary-apparatus answer information included in the monitoring control circuit unit to the monitoring control circuit unit,wherein, in the correct-solution information storage memory, there is stored main-machine correct-solution information items with regard to main-machine answer information generated by the main control circuit unit and/or synthesis correct-solution information obtained by combining and tallying the main-machine correct-solution information and the supplementary-apparatus correct-solution information items for the supplementary-apparatus answer information items,wherein the supplementary-apparatus correct-solution information items are stored in the correct-solution information storage memory or in the nonvolatile program memory,wherein the abnormality determination unit monitors an abnormality in the main control circuit unit, based at least on concurrent question information items generated by the monitoring control circuit unit or discrete question information items, andwherein the main control circuit unit and the monitoring control circuit unit collaborate with each other so as to monitor and discriminate an abnormality in the external control apparatus.
1 Assignment
0 Petitions
Accused Products
Abstract
A main control circuit unit 20A and a monitoring control circuit unit 30A are connected in series; the main control circuit unit 20A and an external control apparatus 40 are connected in series. When the monitoring control circuit unit 30A generates concurrent question information, the main control circuit unit 20A generates main-machine answer information A1n, and the external control apparatus 40 generates supplementary-apparatus answer information. The main control circuit unit 20A combines these answer information items and transmits the combined answer information items to the monitoring control circuit unit 30A; the monitoring control circuit unit 30A compares the combined answer information items with synthesis correct-solution information items stored in a correct-solution information storage memory 35A so as to perform a total abnormality determination. The main control circuit unit 20A performs an abnormality determination on the external control apparatus 40, based on correct-solution information for the external control apparatus 40; the main control circuit unit 20A generates synthesis answer information by use of the correct-solution information.
12 Citations
15 Claims
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1. An in-vehicle electronic control apparatus, having a monitoring control circuit, comprising:
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a main control circuit unit including; a nonvolatile program memory storing a control program; a RAM memory which stores calculation processing; a first input interface circuit to which a first input sensor group is connected; a first output interface circuit to which a first electric load group is connected; and a microprocessor that controls the first electric load group, in response to contents of the control program and an operation status of the first input sensor group, and a monitoring control circuit unit including; a question information generation unit that is connected through a first serial communication circuit to the microprocessor and that sequentially and selectively transmits a plurality of question information items to the microprocessor; a correct-solution information storage memory that stores correct-solution information items that correspond to the question information items; and an abnormality determination unit which determines whether an abnormality in the main control circuit unit exists by comparing answer information that is received from the microprocessor and that is provided in response to the question information items with the stored correct-solution information, wherein the main control circuit unit is connected to an external control apparatus through a second communication circuit, wherein the main control circuit unit receives control signals from the external control apparatus and transmits the control signals to the external control apparatus, wherein the external control apparatus is provided with collaborating supplementary apparatuses including; supplementary-apparatus memories, each storing a control program that generates answer information items in response to the plurality of question information items transmitted from the main control circuit unit, where said answer information is transmitted to the main control circuit unit as supplementary-apparatus answer information, and supplementary-apparatus microprocessors that collaborate with supplementary-apparatus program memories and executes the control program stored in the supplementary-apparatus program memories, wherein, the question information generation unit generates concurrent question information items that are applied to the main control circuit unit and all the external control apparatuses or discrete question information items that are discretely applied to the main control circuit unit and the external control apparatuses; wherein the concurrent question information or the discrete question information items are transmitted from the monitoring control circuit unit to the main control circuit unit and transmitted from the monitoring control circuit unit to the external control apparatuses via the main control circuit unit, wherein the nonvolatile program memory includes a control program which constitutes a main-machine answer generation unit that generates main-machine answer information in accordance with the concurrent question information or the discrete question information items and a control program corresponding to a transmission answer edition unit, wherein the transmission answer edition unit edits the main machine answer information and the supplementary-apparatus answer information and transmits, as answer information, synthesis correct-solution information, the main-machine answer information, or the supplementary-apparatus answer information corresponding to the synthesis correct-solution information, the main-machine answer information, or the supplementary-apparatus answer information included in the monitoring control circuit unit to the monitoring control circuit unit, wherein, in the correct-solution information storage memory, there is stored main-machine correct-solution information items with regard to main-machine answer information generated by the main control circuit unit and/or synthesis correct-solution information obtained by combining and tallying the main-machine correct-solution information and the supplementary-apparatus correct-solution information items for the supplementary-apparatus answer information items, wherein the supplementary-apparatus correct-solution information items are stored in the correct-solution information storage memory or in the nonvolatile program memory, wherein the abnormality determination unit monitors an abnormality in the main control circuit unit, based at least on concurrent question information items generated by the monitoring control circuit unit or discrete question information items, and wherein the main control circuit unit and the monitoring control circuit unit collaborate with each other so as to monitor and discriminate an abnormality in the external control apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification