CARL S WRIGHT
Accountancy in Tucson, AZ
License number
New Jersey 20CC02747700
Issued Date
Oct 28, 1999
Expiration Date
Dec 31, 2005
Category
Accountancy
Type
Certified Public Accountant
Address
Address
Tucson, AZ
Professional information
Method And Apparatus For Detecting Failure In Vibrating Sensors
US Patent:
5652374, Jul 29, 1997
Filed:
Jul 10, 1995
Appl. No.:
8/500217
Inventors:
Michael Ik-Ming Chia - Kokomo IN
Jack Daniel Johnson - Rossville IN
Carl David Wright - Tucson AZ
Jack Daniel Johnson - Rossville IN
Carl David Wright - Tucson AZ
Assignee:
Delco Electronics Corp. - Kokomo IN
International Classification:
G01P 2100
US Classification:
73 138
Abstract:
A yaw sensor for automotive controls has a microstructure vibrating ring excited by a driving circuit. The driving circuit comprises an amplitude control loop which delivers voltage pulses at the resonant frequency of the ring. A compensation signal is derived from a comparison of a sensed vibration amplitude to a desired vibration amplitude. Failure of vibration is detected by comparing the compensation signal to a threshold which is higher than a normal compensation signal. Alternatively, vibration failure is detected by comparing the sensed vibration to a threshold lower than the desired vibration amplitude. Upon such failure, the yaw output signal is replaced by ground potential.
Method And Apparatus For Detecting Failure In Vibrating Sensors
US Patent:
5866796, Feb 2, 1999
Filed:
Jan 27, 1997
Appl. No.:
8/789696
Inventors:
Michael Ik-Ming Chia - Kokomo IN
Jack Daniel Johnson - Rossville IN
Carl David Wright - Tucson AZ
Jack Daniel Johnson - Rossville IN
Carl David Wright - Tucson AZ
Assignee:
Delco Electronics Corporation - Kokomo IN
International Classification:
G01P 2100, G01C 2500
US Classification:
73 175
Abstract:
A yaw sensor for automotive controls has a microstructure vibrating ring excited by a driving circuit. The driving circuit comprises an amplitude control loop which delivers voltage pulses at the resonant frequency of the ring. A compensation signal is derived from a comparison of a sensed vibration amplitude to a desired vibration amplitude. Failure of vibration is detected by comparing the compensation signal to a threshold which is higher than a normal compensation signal. Alternatively, vibration failure is detected by comparing the sensed vibration to a threshold lower than the desired vibration amplitude. Upon such failure, the yaw output signal is replaced by ground potential.