US4588935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling automobile device when sensor output is abnormal
Assignee: Denso Corp
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Filing: 1984-12-26
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Granted: 1986-05-13
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Expires: 2004-12-26
Abstract
Abstract A control method performed in response to the occurrence of an abnormal sensor output during the operation of monitoring the output signal of a sensor and controlling the operation of an automobile device such as a wiper. A microcomputer detects the presence or absence of an abnormal value of the sensor output signal converted to digital form so that when the abnormal value is detected, the operation of the automobile device is selectively controlled in accordance with an engine operating condition indicative signal applied to the microcomputer.
Inventors
- 👤 Toshiyuki Kaneiwa
- 👤 Mamoru Shimamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:24
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/22; F02D41/222; B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/06; B60S1/08; B60S1/0818; B60S1/0896; B60S1/0822; B60S1/0833; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40; Y10; Y10S; Y10S318/00; Y10S318/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A method of controlling the operation of an electrical device mounted on a vehicle equipped with a running condition sensor for sensing the running condition of said vehicle, said method comprising the steps of: sensing a predetermined parameter required for the control of said electrical device by means of additional sensing means mounted on said vehicle; discriminating whether said sensed predetermined parameter is within a normal range or an abnormal range; controlling said electrical device in accordance with said sensed predetermined parameter when said parameter is discriminated to be within said normal range; and controlling said electrical device in accordance with an output of said running condition sensor when said sensed predetermined parameter is discriminated to be within said abnormal range.
Claim 2
Independent Claim
121 words
A method of controlling the operation of an electrical device mounted on a vehicle equipped with a running condition sensor for sensing the running condition of said vehicle, said method comprising the steps of: sensing a predetermined parameter required for the control of said electrical device by means of additional sensing means mounted on said vehicle; discriminating whether said sensed predetermined parameter is within a normal range or an abnormal range; controlling said electrical device in accordance with said sensed predetermined parameter when said parameter is discriminated to be within said normal range; and controlling said electrical device in accordance with an output of said running condition sensor when said sensed predetermined parameter is discriminated to be within said abnormal range.
Claim 3
Dependent Claim
24 words
A method according to claim 1, wherein said electrical device is a windshield wiper and said additional sensing means is a rain drop sensor.
Claim 4
Dependent Claim
58 words
A method according to claim 2, wherein said discriminating step includes: storing an initial value of rain drops sensed by said rain drop sensor at the initiation of controlling said wiper; establishing a reference value in accordance with said stored initial value; and comparing said rain drops sensed by said rain drop sensor with said established reference value.
Claim 5
Dependent Claim
18 words
A method according to claim 3, wherein said running condition sensor senses the running speed of said vehicle.
Claim 6
Dependent Claim
74 words
A method according to claim 4, wherein the controling of the electrical device in accordance with an output of the running condition sensor includes the steps of: comparing whether said sensed running speed is above or below a predetermined value; maintaining a previous operation of said wiper when said sensed running speed is above said predetermined value; and disabling the operation of said wiper when said sensed running speed is below said predetermined value.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |