GOOD CHECKING FOR VEHICLE LONGITUDINAL ACCELERATION SENSOR
First Claim
1. A controller for indicating whether a previously-detected, acceleration-sensor malfunction no longer exists, the controller comprising:
- an electronic memory; and
an electronic processing unit connected to the electronic memory, the electronic processing module including,a malfunction monitoring module configured to monitor the operation of an acceleration sensor and generate a fault signal when the acceleration sensor malfunctions, the fault signal containing fault information and causing at least one of a tell-tale indicator to be activated or a vehicle control module to modify its operation from a first operating state to a second operating state,a failure handling module configured to cause drive cycle information and the fault information to be stored in the electronic memory, anda signal checking module configured to perform a signal check after the malfunction monitoring module generates the fault signal, the signal check includingretrieving drive cycle information from the electronic memory,determining whether to execute a signal check function based on the drive cycle information,executing the signal check function with a longitudinal acceleration signal,determining whether the longitudinal acceleration signal passes the signal check function,generating a reset signal when the longitudinal acceleration signal passes the signal check function, the reset signal causing at least one of the tell-tale indicator to be deactivated and the vehicle control module to resume operation in the first operating state.
2 Assignments
0 Petitions
Accused Products
Abstract
A controller for indicating whether a previously-detected, acceleration-sensor malfunction no longer exists. The controller includes an electronic memory and an electronic processing unit connected to the electronic memory. The electronic processing module includes a malfunction monitoring module, a failure handling module, and a signal checking module. The signal checking module performs a signal check after the malfunction monitoring module generates the fault signal. The signal check includes executing a signal check function with a longitudinal acceleration signal. Also disclosed is a vehicle including the controller, and a method executed by the controller.
-
Citations
20 Claims
-
1. A controller for indicating whether a previously-detected, acceleration-sensor malfunction no longer exists, the controller comprising:
-
an electronic memory; and an electronic processing unit connected to the electronic memory, the electronic processing module including, a malfunction monitoring module configured to monitor the operation of an acceleration sensor and generate a fault signal when the acceleration sensor malfunctions, the fault signal containing fault information and causing at least one of a tell-tale indicator to be activated or a vehicle control module to modify its operation from a first operating state to a second operating state, a failure handling module configured to cause drive cycle information and the fault information to be stored in the electronic memory, and a signal checking module configured to perform a signal check after the malfunction monitoring module generates the fault signal, the signal check including retrieving drive cycle information from the electronic memory, determining whether to execute a signal check function based on the drive cycle information, executing the signal check function with a longitudinal acceleration signal, determining whether the longitudinal acceleration signal passes the signal check function, generating a reset signal when the longitudinal acceleration signal passes the signal check function, the reset signal causing at least one of the tell-tale indicator to be deactivated and the vehicle control module to resume operation in the first operating state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method executed by a controller, including an electronic processing unit and an electronic memory, for determining whether a previously-detected, acceleration-sensor malfunction no longer exists, the method comprising
monitoring the operation of an acceleration sensor with a malfunction monitoring module executed by the electronic processing unit; -
generating a fault signal containing fault information with the malfunction monitoring module when the acceleration sensor malfunctions; causing, at least partially in response to the fault signal, at least one of a tell-tale indicator to be activated or a vehicle control module to modify its operation from a first operating state to a second operating state; storing drive cycle information and the fault information in the electronic memory with a failure handling module executed by the electronic processing unit; and performing a signal check after generating the fault signal with a signal checking module executed by the electronic processing unit, including retrieving drive cycle information from the electronic memory, determining whether to execute a signal check function based on the drive cycle information, executing the signal check function with a longitudinal acceleration signal, determining whether the longitudinal acceleration signal passes the signal check function, generating a reset signal when the longitudinal acceleration signal passes the signal check, the reset signal causing at least one of the tell-tale indicator to be deactivated and a vehicle control module to resume operation in the first operating state. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification