Indicator for vehicles

• US 4,307,374 A
• Filed: 06/04/1980
• Issued: 12/22/1981
• Est. Priority Date: 06/06/1979
• Status: Expired due to Term

• Current Assignee: ITT Industries Inc (ITT, Inc.)
• Original Assignee: ITT Industries Inc (ITT, Inc.)
• Inventors: Prohaska, Hans, Bode, Manfred, Knab, Rolf-Dieter
• Primary Examiner(s): Waring, Alvin H.
• Application Number:
  US06/156,470
• Time in Patent Office: 566 Days
• Field of Search: 340/52 F, 340/52 R, 340/52 E, 340/517, 340/518, 340/519, 340/521
• US Class Current: 340/462
• CPC Class Codes: B60C 23/0401 characterised by the type of alarm
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/20 Devices for measuring or signalling tyre temperature only
• CPC Class Codes: F16D 66/022 indicating that a lining is worn to minimum allowable thickness
• CPC Class Codes: G01D 7/08 using a common indicating element for two or more variables
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: H02J 7/14 for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle

Abstract

An electronic display indicator system for automotive vehicles wherein a single visual display unit is utilized to display the outputs of a plurality of sensing devices. The indicator system is manually activated to display the outputs of the sensor devices in sequence. Any given sensor device output is automatically displayed when the output thereof exceeds a predetermined value.

Claims

1. An indicating system for presenting a plurality of parameters relating to motor vehicle operation, comprising:

first means having at least two signal generators each providing a signal derived from a corresponding sensor responsive to a discrete physical condition relating to said motor vehicle operation;

second means comprising a display capable of indicating the values of said parameters;

third means for controlling said second means to present said parameters seriatim in a predetermined order in response to at least one initiating signal;

fourth means responsive to the values of said parameters from said first means for initiating a cycle of said third means whenever a predetermined amount of change in value of any of said parameters occurs, said fourth means also including means for manual initiation of a cycle of said third means;

and fifth means comprising circuits for recognizing a value of at least one of said parameters which is outside of a predetermined range indicating a fault and for correspondingly initiating a priority presentation of said parameter corresponding to said fault.

2. Apparatus according to claim 1 in which said fourth means in responsive to closure of the ignition switch of said vehicle and comprises circuits permitting said manual initiation only during said ignition switch closure.

3. Apparatus according to claim 1 in which said fourth means further provides automatic initiation of said cycle upon closure of said ignition switch.

4. Apparatus according to claim 1 in which said third means comprises at least one electronic gate in series with the path between each of said first means signals and said display and a counter controlled by a clock pulse generator, said counter providing a discrete output for controlling each of said gates seriatim.

5. Apparatus according to claim 1 in which sixth means are provided and are associated with said first means, for inhibiting the presentation of at least one of said parameters until expiration of a predetermined delay, thereby to avoid presentation of initially false indications from parameters which subsequently stabilize.

6. Apparatus according to claim 1 in which seventh means associated with said third means are included for establishing said predetermined order of presentation of said parameters according to priority significance of each of the output signals of said first means.

7. Apparatus according to claim 1 in which eighth means are included associated with said fifth means for applying said order of presentation to a plurality of said parameters corresponding to faults in their respective vehicle functions.

8. Apparatus according to claim 4 further including means for blocking said clock pulse signal from said counter during said fault indicating parameter to provide continuous presentation of said fault parameter until said cycle is intentionally re-initiated.

9. Apparatus according to claim 1 in which said first means signals are digitized for digital processing on said display, said display being of the multi-digit, seven bar, LED type.

10. Apparatus according to claim 4 in which said first means signals are digitized for digital processing on said display, said display being of the multi-digit, seven bar, LED type.