Abstract: A detecting device for a vehicle and method thereof is provided. The device includes a first infrared detector, a second infared detector, and a controller. The first infrared detector is configured to repeatedly measure a temperature of a first target area by receiving infrared radiation of the first target area over a sampling period. The second infrared detector is configured to repeatedly measure a temperature of a second target area by receiving infrared radiation of the second target area over the sampling period. The controller is configured to receive and store the plurality of first and second signals, wherein the controller repeatedly compares a plurality of correlation values to a predetermined tolerance range above a minimum threshold value, wherein the correlation values are determined by repeatedly comparing a plurality of time delayed signals of the second plurality of signals to a real time signal of the plurality of first signals.

Abstract: A diagnostic method for a blind-zone sensing system including leading and trailing passive IR sensors periodically determines a separation distance between coverage areas of the leading and trailing sensors to diagnose sensor alignment. Signals produced by the leading and trailing sensors are sampled and stored over a defined interval of time for processing. A condition in which the sensor coverage areas abruptly encounter a stationary region of cooler temperature is detected when corresponding signal deflections are identified. The elapsed time between the identified signal deflections is measured and used along with an accurate measure of the vehicle speed to compute the separation distance between coverage areas of the leading and trailing sensors.

Abstract: A detecting device for a vehicle, the detecting device comprising: a first infrared detector configured to repeatedly measure a temperature of a first target area by receiving infrared radiation of the first target area, the first infrared detector being configured to provide a plurality of first signals each corresponding to a measured temperature of the first target area over a sampling period; a second infrared detector configured to repeatedly measure a temperature of a second target area by receiving infrared radiation of the second target area, the second infrared detector being configured to provide a plurality of second signals each corresponding to a measured temperature of the second target area over the sampling period, the second target area being different from the first target area; and a controller configured to receive and store the plurality of first signals and the plurality of second signals in a storage medium, wherein the controller repeatedly compares a plurality of correlation values to

Abstract: A multi-processor AC motor control system having a timer processor which generates multiple synchronized PWM waveforms while minimizing software latency effects. The timer processor generates a 50% PWM duty cycle sync signal at the PWM frequency, creating a logic level transition (leading edge) in each PWM period. At each such transition, the timer processor interrupts the host processor for the purpose of updating a multi-byte timer data register with PWM on-time data stored in nonvolatile memory as a function of machine position and requested current. A separate timer channel is provided for each PWM waveform to be generated, and the timer processor sets off-to-on and on-to-off transitions of each waveform in accordance with the updated PWM on-time data such that respective off-to-on and on-to-off transitions in each waveform are centered about the leading edges of the sync signal.

Abstract: An improved digital PWM closed-loop current control for a multiple phase winding AC machine which requires only a single sensor for monitoring the current in one of the phase windings of the machine. The PWM on-time values for the various phase windings of the machine are stored in a single look-up table as a function of stator position and requested current amplitude, and the on-times used to schedule phase winding energization are periodically updated using a two-part look-up procedure. Initially, the stored on-time value for a single phase winding is retrieved from the table as a function of stator position and the requested current amplitude. The retrieved value is then compared with a measure of the actual current in the respective phase winding to form an error signal, which is used to adjust the requested current amplitude.