A diagnostic system for a hybrid electric vehicle is provided. The system includes a vehicle controller, a battery management controller, a monitoring circuit, a transistor, a voltage sensor, and an analog-to-digital converter. The vehicle controller sends a first message to the battery management controller indicating an engine crank occurred. The battery management controller sends a second message to the monitoring circuit, and the monitoring circuit induces a transistor to de-energize an electrical relay. The voltage sensor outputs a voltage signal indicative of a voltage being output by the transistor. The analog-to-digital converter outputs a voltage value indicative of the voltage. The battery management controller sets a diagnostic flag to a first non-fault value if the voltage value is less than a threshold voltage value.

A diagnostic system for a hybrid electric vehicle is provided. The system includes a vehicle controller, a battery management controller, a monitoring circuit, a transistor, a voltage sensor, and an analog-to-digital converter. The vehicle controller sends a first message to the battery management controller indicating an engine crank occurred. The battery management controller sends a second message to the monitoring circuit, and the monitoring circuit induces a transistor to de-energize an electrical relay. The voltage sensor outputs a voltage signal indicative of a voltage being output by the transistor. The analog-to-digital converter outputs a voltage value indicative of the voltage. The battery management controller sets a diagnostic flag to a first non-fault value if the voltage value is less than a threshold voltage value.

An electronic device includes a ramp generator configured to generate a ramp signal used to detect data, the ramp signal increasing or decreasing with a certain slope; a main circuit configured to perform at least one predefined function by detecting the data based on the ramp signal; a monitoring circuit configured to output a verify signal indicating whether the ramp signal is faulty; and a controller configured to control execution of the at least one predefined function based on the verify signal.

In a solid state imaging device as an embodiment, an analog-to-digital converter unit converts, in a first period, a first pixel signal into a digital signal, performs, in a determination period after the first period, the comparison of a second pixel signal with the reference signal set to a predetermined threshold, and converts, in a second period after the determination period, the second pixel signal at a gain in accordance with a result of the comparison performed in the determination period into a digital signal. Until the reference signal reaches the threshold from the first period, the reference signal generation unit changes the reference signal without changing a direction of change of the reference signal with respect to the lapse of time.

Systems and methods that facilitate identifying and controlling the systems and subsystems in a vehicle to enable autonomous operation of the vehicle are disclosed. An autonomous vehicle interface (AVI) (the “AVI control system”) can interface with and control the system of the vehicle, thereby enabling control of the vehicle as a whole. Electronic control units may be associated with each of the systems and subsystems in the vehicle, and the AVI may interface with and control these electronic control units over a shared data bus. In order to control particular electronic control units, the systems and methods provide for sampling data packets transmitted by the electronic control units on the shared data bus, measuring the impedance of the shared data bus when data packets are being transmitted, and identifying particular electronic control units based on the measured impedance.

Systems and methods that facilitate identifying and controlling the systems and subsystems in a vehicle to enable autonomous operation of the vehicle are disclosed. An autonomous vehicle interface (AVI) (the “AVI control system”) can interface with and control the system of the vehicle, thereby enabling control of the vehicle as a whole. Electronic control units may be associated with each of the systems and subsystems in the vehicle, and the AVI may interface with and control these electronic control units over a shared data bus. In order to control particular electronic control units, the systems and methods provide for sampling data packets transmitted by the electronic control units on the shared data bus, measuring the impedance of the shared data bus when data packets are being transmitted, and identifying particular electronic control units based on the measured impedance.

Systems and methods that facilitate identifying and controlling the systems and subsystems in a vehicle to enable autonomous operation of the vehicle are disclosed. An autonomous vehicle interface (AVI) (the AVI control system) can interface with and control the system of the vehicle, thereby enabling control of the vehicle as a whole. Electronic control units may be associated with each of the systems and subsystems in the vehicle, and the AVI may interface with and control these electronic control units over a shared data bus. In order to control particular electronic control units, the systems and methods provide for sampling data packets transmitted by the electronic control units on the shared data bus, measuring the impedance of the shared data bus when data packets are being transmitted, and identifying particular electronic control units based on the measured impedance.

In a solid state imaging device as an embodiment, an analog-to-digital converter unit converts, in a first period, a first pixel signal into a digital signal, performs, in a determination period after the first period, the comparison of a second pixel signal with the reference signal set to a predetermined threshold, and converts, in a second period after the determination period, the second pixel signal at a gain in accordance with a result of the comparison performed in the determination period into a digital signal. Until the reference signal reaches the threshold from the first period, the reference signal generation unit changes the reference signal without changing a direction of change of the reference signal with respect to the lapse of time.

Embodiments relate to systems and methods for self-diagnostics and/or error detection using multiple signal paths in sensor and other systems. In an embodiment, a sensor system comprises at least two sensors, such as magnetic field sensors, and separate signal paths associated with each of the sensors. A first signal path can be coupled to a first sensor and a first digital signal processor (DSP), and a second signal path can be coupled to a second sensor and a second DSP. A signal from the first DSP can be compared with a signal from the second DSP, either on-chip or off, to detect faults, errors, or other information related to the operation of the sensor system. Embodiments of these systems and/or methods can be configured to meet or exceed relevant safety or other industry standards, such as safety integrity level (SIL) standards.

An electronic device includes a ramp generator configured to generate a ramp signal used to detect data, the ramp signal increasing or decreasing with a certain slope; a main circuit configured to perform at least one predefined function by detecting the data based on the ramp signal; a monitoring circuit configured to output a verify signal indicating whether the ramp signal is faulty; and a controller configured to control execution of the at least one predefined function based on the verify signal.