Sensor control apparatus and gas detection system
US-2016169137-A1 · Jun 16, 2016 · US
Anomaly determination apparatus and control system
US2018306136A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018306136-A1 |
| Application number | US-201815956430-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 18, 2018 |
| Priority date | Apr 24, 2017 |
| Publication date | Oct 25, 2018 |
| Grant date | — |
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Abstract
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An anomaly determination apparatus determines an anomaly of a current control apparatus which supplies a control current to a control target and includes a current anomaly determination section. The current anomaly determination section is configured to compare a normal numerical range within which a state quantity changing with the control current falls in a particular state with a particular state quantity which is the state quantity corresponding to the control current generated by the control current generation section in the particular state, and determine that at least one of the reference resistor, the reference current generation section, and the control current generation section is in an anomalous state in the case where the particular state quantity has deviated from the normal numerical range. By using the current anomaly determination section, the anomaly determination apparatus can determine an anomaly of the current control apparatus.
First claim
Opening claim text (preview).
1 . An anomaly determination apparatus for determining an anomaly of a current control apparatus which supplies a control current to a control target, said current control apparatus including a reference current generation section that generates a reference current by using a reference resistor, and a control current generation section that generates a control current having a predetermined current value while using a current value of the reference current as a reference and supplies the control current to the control target, the anomaly determination apparatus comprising: a current anomaly determination section that compares a normal numerical range within which a state quantity changing with the control current falls in a particular state with a particular state quantity, which is the state quantity corresponding to the control current generated by the control current generation section in the particular state and determines that at least one of the reference resistor, the reference current generation section, and the control current generation section is in an anomalous state in the case where the particular state quantity has deviated from the normal numerical range. 2 . The anomaly determination apparatus according to claim 1 , further comprising a range setting section that sets the normal numerical range based on an operation state of an internal combustion engine, wherein the control target of the current control apparatus is a sensor provided for the internal combustion engine. 3 . The anomaly determination apparatus according to claim 1 , wherein the anomaly determination apparatus is integrated with the current control apparatus. 4 . The anomaly determination apparatus according to claim 1 , wherein the anomaly determination apparatus is provided separately from the current control apparatus and includes an information receiving section which receives information regarding the particular state quantity from the current control apparatus, and the current anomaly determination section performs a determination based on the information received by the information receiving section. 5 . A control system comprising: a current control apparatus including a reference current generation section which generates a reference current by using a reference resistor, and a control current generation section which generates a control current having a predetermined current value while using a current value of the reference current as a reference and supplies the control current to the control target; and the anomaly determination apparatus according to claim 1 .
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Classifications
Circuits (measuring resistance per se G01R27/00, e.g. G01R27/22) · CPC title
between sensors and control unit · CPC title
Control unit therefor · CPC title
Circuit arrangements specially adapted therefor · CPC title
specially adapted to detect a particular component (physical analysis of gaseous biological material G01N33/497) · CPC title
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- What does patent US2018306136A1 cover?
- An anomaly determination apparatus determines an anomaly of a current control apparatus which supplies a control current to a control target and includes a current anomaly determination section. The current anomaly determination section is configured to compare a normal numerical range within which a state quantity changing with the control current falls in a particular state with a particular …
- Who is the assignee on this patent?
- Ngk Spark Plug Co
- What technology area does this patent fall under?
- Primary CPC classification F02D41/1495. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Oct 25 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).