Event detector used vehicle control apparatus

• US 5,305,216 A
• Filed: 10/31/1991
• Issued: 04/19/1994
• Est. Priority Date: 11/01/1990
• Status: Expired due to Fees

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Okura, Kazuma, Yamamoto, Akito
• Primary Examiner(s): Black, Thomas G.
• Assistant Examiner(s): LOUIS JACQUES, JACQUES H
• Application Number:
  US07/784,937
• Time in Patent Office: 901 Days
• Field of Search: 364/424.01, 364/550, 364/431.04, 364/431.12, 364/424.03, 123/357, 123/352, 123/358, 123/359, 123/492, 123/480, 123/493
• US Class Current: 701/35
• CPC Class Codes: F02D 41/26 using computer, e.g. microprocessor
• CPC Class Codes: F02D 41/28 Interface circuits

Abstract

A vehicle control apparatus comprises various sensors sensitive to vehicle operating parameters for producing signals having values sensed for the respective vehicle operating parameters. The vehicle control apparatus also comprises a transition detector. The transition detector includes a memory for storing threshold values specified for the respective vehicle operating parameters, and a comparator for comparing the sensed values with the respective threshold values in a predetermined sequence to sense a transition in one of the vehicle operating parameters when the value sensed for the one vehicle operating parameter is in a range defined by the threshold value specified for the one vehicle operating parameter. The transition detector is coupled to a control unit for controlling the automotive vehicle for the sensed transition.

Claims

1. An apparatus for controlling an automative vehicle, comprising:

first means sensitive to vehicle operating parameters for producing signals having values sensed for the respective vehicle operating parameters;

a transition detector, coupled to said first means, including a first memory for storing predetermined threshold values specified for the respective vehicle operating parameters, and means for comparing the sensed values with the respective threshold values in a predetermined sequence to provide at least one signal indicative of a sensed transition in one of the vehicle operating parameters when the value sensed for the one vehicle operating parameter is in a range defined by a threshold value specified for the one vehicle operating parameter;

an event detector coupled to the transition detector for detecting a specified at least one of said sensed transitions to produce an event signal indicative of a sensed event; and

control means responsive to the event signal for controlling the automotive vehicle in response to the sensed event.

2. The vehicle control apparatus as claimed in claim 1, wherein the event detector includes means for producing the event signal when a plurality of specified transitions are sensed in a predetermined sequence.

3. The vehicle control apparatus as claimed in claim 1, wherein the transition detector includes means for producing a command signal specifying an address selected for the one vehicle operating parameter, means responsive to the command signal for reading the threshold value stored at the specified address of the first memory, and means for comparing the value sensed for the one vehicle operating parameter with the read threshold value to provide the transition indicative signal when the sensed value is in a range defined by the read threshold value.

4. The vehicle control apparatus as claimed in claim 3, wherein the transition detector includes a second memory for storing the values sensed for the respective vehicle operating parameters, means responsive to the command signal for writing the value sensed for the one vehicle operating parameter into the specified address of the second memory.

5. The vehicle control apparatus as claimed in claim 1, wherein the comparator including means for sensing the transition when the sensed value is equal to or greater than the threshold value.

6. The vehicle control apparatus as claimed in claim 1, wherein the first memory stores sign values specified for the respective vehicle operating parameters, and wherein the transition detector includes means for producing a command signal specifying an address selected for the one vehicle operating parameter, means responsive to the command signal for reading the threshold value stored at the specified address of the first memory and a sign value stored at the specified address of the first memory, and means for producing the transition indicative signal in response to the sensed value being equal to or greater than the read threshold value when the read sign value has a first level or in response to the sensed value being less than the read threshold value when the read sign has a second level.

7. The vehicle control apparatus as claimed in claim 6, wherein the first memory stores action codes specified for the respective vehicle operating parameters, and wherein the transition detector includes means responsive to the command signal for reading an action code stored in the specified address of the first memory, and means responsive to the transition indicative signal for performing an action indicated by the read action code.