Diagnostic reporting for sensor integrated circuits
First Claim
1. A sensor integrated circuit, the sensor integrated circuit comprising a controller and a diagnostic module in communication with the controller,the controller being configured for providing a diagnostic reporting signal, the diagnostic reporting signal being a periodic superposition signal on a sensing output of the sensor integrated circuit and/or on a supply current of the sensor integrated circuit, wherein the periodic superposition signal has periodic pulses with a predetermined fixed pulse duration and a predetermined periodicity,the controller furthermore being configured for altering the predetermined periodicity or predetermined fixed pulse duration of the periodic superposition signal upon a fault detection in the diagnostic module communicated to the controller;
- wherein the predetermined fixed pulse duration and/or the predetermined periodicity corresponds with the operating period of a micro-power sensor using Active/Standby cycling for power saving, and/or the predetermined fixed pulse duration and/or the predetermined periodicity corresponds with the measurement cycle in the sensor.
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Accused Products
Abstract
A sensor integrated circuit comprising a controller and a diagnostic module in communication with the controller. The controller is configured for providing a diagnostic reporting signal being a periodic superposition signal on a sensing output of the sensor integrated circuit and/or on a supply current of the sensor integrated circuit. The periodic superposition signal has periodic pulses with a predetermined fixed pulse duration and a predetermined periodicity. The controller furthermore is configured for altering the predetermined periodicity or predetermined fixed pulse duration of the periodic superposition signal upon a fault detection in the diagnostic module communicated to the controller.
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Citations
14 Claims
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1. A sensor integrated circuit, the sensor integrated circuit comprising a controller and a diagnostic module in communication with the controller,
the controller being configured for providing a diagnostic reporting signal, the diagnostic reporting signal being a periodic superposition signal on a sensing output of the sensor integrated circuit and/or on a supply current of the sensor integrated circuit, wherein the periodic superposition signal has periodic pulses with a predetermined fixed pulse duration and a predetermined periodicity, the controller furthermore being configured for altering the predetermined periodicity or predetermined fixed pulse duration of the periodic superposition signal upon a fault detection in the diagnostic module communicated to the controller; wherein the predetermined fixed pulse duration and/or the predetermined periodicity corresponds with the operating period of a micro-power sensor using Active/Standby cycling for power saving, and/or the predetermined fixed pulse duration and/or the predetermined periodicity corresponds with the measurement cycle in the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A controller for use in a sensor integrated circuit, the controller being configured for communicating with a diagnostic module and for providing a diagnostic reporting signal,
the diagnostic reporting signal being a periodic superposition signal on a sensing output of the sensor integrated circuit and/or on a supply current of the sensor integrated circuit, wherein the periodic superposition signal has periodic pulses with a predetermined fixed pulse duration and a predetermined periodicity, the controller furthermore being configured for altering the predetermined periodicity or predetermined fixed pulse duration of the periodic superposition signal upon a fault detection in the diagnostic module communicated to the controller; wherein the predetermined fixed pulse duration and/or the predetermined periodicity corresponds with the operating period of a micro-power sensor using Active/Standby cycling for power saving, and/or the predetermined fixed pulse duration and/or the predetermined periodicity corresponds with the measurement cycle in the sensor.
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14. A method for diagnostic reporting, the method comprising
providing a diagnostic reporting signal, the diagnostic reporting signal being a periodic superposition signal on a sensing output of the sensor integrated circuit and/or on a supply current of the sensor integrated circuit, wherein the periodic superposition signal has periodic pulses with a predetermined fixed pulse duration and a predetermined periodicity, and altering the predetermined periodicity or predetermined fixed pulse duration of the periodic superposition signal upon a fault detection in the diagnostic module communicated to the controller; wherein the predetermined fixed pulse duration and/or the predetermined periodicity corresponds with the operating period of a micro-power sensor using Active/Standby cycling for power saving, and/or the predetermined fixed pulse duration and/or the predetermined periodicity corresponds with the measurement cycle in the sensor.
Specification