Abstract: A battery control system for an electric vehicle including a battery pack includes a dew point calculation module that receives at least a first signal indicative of humidity within the battery pack and a second signal indicative of temperature within the battery pack, and that calculates a dew point within the battery pack based on the humidity and the temperature. A coolant system control module receives the dew point and a requested coolant temperature, sets a desired coolant temperature based on the dew point and the requested coolant temperature, and selectively operates a coolant system of the battery pack based on the desired coolant temperature.

Abstract: A battery control system for an electric vehicle including a battery pack includes a dew point calculation module that receives at least a first signal indicative of humidity within the battery pack and a second signal indicative of temperature within the battery pack, and that calculates a dew point within the battery pack based on the humidity and the temperature. A coolant system control module receives the dew point and a requested coolant temperature, sets a desired coolant temperature based on the dew point and the requested coolant temperature, and selectively operates a coolant system of the battery pack based on the desired coolant temperature.

Abstract: A battery control module for a battery system includes a pulse-width modulation (PWM) module that generates N PWM signals. The battery control module also includes a contactor control module that consecutively applies the N PWM signals to close a contactor in order to connect a battery to a load. Application of a first one of the N PWM signals moves the contactor at a first velocity from an open position and application of a second one of the N PWM signals moves the contactor at a second velocity to a closed position. The first velocity is less than the second velocity. N is an integer greater than one.

Abstract: A battery control module for a battery system includes a pulse-width modulation (PWM) module that generates N PWM signals. The battery control module also includes a contactor control module that consecutively applies the N PWM signals to close a contactor in order to connect a battery to a load. Application of a first one of the N PWM signals moves the contactor at a first velocity from an open position and application of a second one of the N PWM signals moves the contactor at a second velocity to a closed position. The first velocity is less than the second velocity. N is an integer greater than one.

Abstract: A system for detecting wavelength error that includes one or more ordered pairs of photodetectors each of which receives an individual optical signal and is used to detect a wavelength error in that optical signal. Each individual optical signal is directed towards a corresponding pair of photodetectors. The pair of photodetectors are positioned around a region of maximum constructive interference or minimum insertion loss. A feedback circuit analyzes output signals from the photodetectors and determines wavelength error based on differences between the output signals from the photodetectors.

Abstract: An optical vestigial sideband transmitter includes first and second intensity-modulated light sources and a pair of optical splitters. A first and second wavelength combiner receives a portion of the outputs of the first and second intensity-modulated light sources. The first wavelength combiner filters the two modulated signals to generate two vestigial sideband signals and multiplexes them onto a single waveguide such as an optical fiber for output to an optical transmission medium. The second wavelength combiner operates in conjunction with the first wavelength combiner to automatically and precisely regulate the optical wavelengths of the light sources, such that the passband of the first wavelength combiner substantially suppresses the redundant sideband from each modulated signal. After transmission, a vestigial sideband receiver including a wavelength splitter and optical-to-electrical receivers extracts the multiplicity of vestigial sideband signals placing them on separate optical waveguides.

Abstract: An integrated wavelength combiner/locker is described herein that performs a multiplexing function of a wavelength combiner and a wavelength error measurement function of a wavelength locker. In the preferred embodiment, the integrated wavelength combiner/locker includes a filter (e.g., diffraction grating, glass plate) that receives multiple optical signals and outputs a multiplexed optical signal. The integrated wavelength combiner/locker also includes a partially reflective device (e.g., mirror, coupler/circulator) that directs a portion of the multiplexed optical signal back into the filter that splits the multiplexed optical signal back into individual optical signals. The integrated wavelength combiner/locker further includes one or more ordered pairs of photodetectors each of which receives one of the individual optical signals and is used to detect a wavelength error in that optical signal.

Abstract: An integrated wavelength combiner/locker is described herein that performs a multiplexing function of a wavelength combiner and a wavelength error measurement function of a wavelength locker. In the preferred embodiment, the integrated wavelength combiner/locker includes a filter (e.g., diffraction grating, glass plate) that receives multiple optical signals and outputs a multiplexed optical signal. The integrated wavelength combiner/locker also includes a partially reflective device (e.g., mirror, coupler/circulator) that directs a portion of the multiplexed optical signal back into the filter that splits the multiplexed optical signal back into individual optical signals. The integrated wavelength combiner/locker further includes one or more ordered pairs of photodetectors each of which receives one of the individual optical signals and is used to detect a wavelength error in that optical signal.

Abstract: An optical vestigial sideband transmitter includes first and second intensity-modulated light sources and a pair of optical splitters. A first and second wavelength combiner receives a portion of the outputs of the first and second intensity-modulated light sources. The first wavelength combiner filters the two modulated signals to generate two vestigial sideband signals and multiplexes them onto a single waveguide such as an optical fiber for output to an optical transmission medium. The second wavelength combiner operates in conjunction with the first wavelength combiner to automatically and precisely regulate the optical wavelengths of the light sources, such that the passband of the first wavelength combiner substantially suppresses the redundant sideband from each modulated signal. After transmission, a vestigial sideband receiver including a wavelength splitter and optical-to-electrical receivers extracts the multiplicity of vestigial sideband signals placing them on separate optical waveguides.

Abstract: A method and system are disclosed for applying frame synchronous forward error correction codes to SONET format optical data using an error correction circuit. One embodiment of the method of the present invention comprises the steps of adjusting the length of an error correction method codeword containing an error correction portion, such that a whole number of codewords fit between the A1-A2 framing bytes, and synchronizing the error correction circuit to an A1-A2 transition in the SONET frame. The step of synchronizing the error correction circuit can further comprise generating a framing pulse at a framer, and sending the framing pulse to a state machine to initialize the registers in an encoder to a start state for the encoding process, wherein the start state corresponds to an initial loaded value defined by the A1-A2 transition. The framing pulse is also sent to a decoder to locate the error correction portion of the codeword.

Abstract: A finger wash basin that can be attached to an existing toilet without major modifications. The basin consists of a container which is mounted adjacent or on the existing toilet and has a water supply pipe which is connected to the existing water supply pipe for the toilet bowl. The container also has a drain pipe which leads used water back to the toilet bowl. A gasket is attached to the top of the toilet tank and has a top surface which will securely mount the toilet tank lid. The gasket can be provided with openings that will allow the water supply pipe and the drain pipe to pass through the gasket between the top of the toilet tank and the toilet tank lid.

Abstract: A method and apparatus are provided for smoothing jitter in a smoothed clock output by routing a portion of the incoming clock signal representing phase hit information through a digital high-pass filter (12), which produces complementary output digital signals. One of the output signals includes the higher order bits of the filtered phase hit signal, and the other output signal includes the lower order bits of the filtered phase hit signal. The filtered, complementary phase hit signals are summed with the stream of clock pulses to be smoothed. Each of these summed signals is supplied to a separate phase detector circuit (120, 121). The phase detector (120) receiving the higher order bit signal generates a coarse error signal, and the phase detector (121) receiving the lower order bit signal generates a fine error signal.