Abstract: A system, and a corresponding method, for measuring a chemical concentration of a gas exhausted from exhaust ports (409, 413) of a multi-cylinder internal combustion engine (401) includes a gas sensing device. This device (419) is preferably a UEGO (Universal Exhaust Gas Oxygen) sensor. The gas exhausted is present in a substantially stable chemical concentration (706, 718) at a collection point (420) during intervals (738, 742) of engine angular rotation corresponding to the exhaust cycles. The UEGO sensor (419) measures the gas exhausted from the exhaust ports (409, 413) and provides a sensory output signal (743) that, during the intervals (738, 742) of engine angular rotation corresponding to each of the exhaust cycles, approaches (737, 741) a substantially stable value representative of the chemical concentration of the gas (706, 718) exhausted during the associated exhaust cycle.

Abstract: A serial scan test architecture can perform testing of an electrical circuit without cycling through multiple data register shift operations required by conventional test architectures by permitting test signals to be transferred bidirectionally between serial scanning circuitry and functional circuitry while serial data is being transferred in a continuous serial data stream between the test controller and the serial scanning circuitry.

Abstract: A modular circuit interrupter is arranged for interrupting current in a three-phase circuit path providing current from a three-phase source to a three-phase motor. The interrupter includes a contactor unit arranged to interrupt the circuit path in response to a trip command; a current inducer circuit for providing a current signal having a magnitude corresponding to the current in the circuit path; a fault detection circuit responsive to the current signal, for detecting and communicating power faults in the circuit path; and start and stop motor modules. Respective housings are provided for each of the contactor unit, the fault detection circuit, the start motor module and the stop motor module. A data/power communication bus provides a data communication link between each of the contactor unit, the fault detection circuit, the start motor module and the stop motor module.

Abstract: A printing press monitoring and advising system is shown utilizing an inference engine to analyze the operation of the press intelligently. The system analyzes detected press and paper characteristics in accordance with a symptom table, conclusion table, and symptom/conclusion table to advise the operator as to press operation settings, such as tension settings, prior to the start of press operations; possible problems during press operations, and the type and/or the cause of defects as such defects are detected by the system.

Abstract: A computer-based deep level transient spectroscopy (DLTS) system (10) efficiently digitizes and analyzes capacitance and conductance transients acquired from a test material (13) by conventional DLTS methods as well as by several transient methods, including a covariance method of linear predictive modeling. A unique pseudo-logarithmic data storage scheme allows each transient to be tested at more than eleven different rates, permitting three to five decades of time constants .tau. to be observed during each thermal scan, thereby allowing high resolution of closely spaced defect energy levels.

Abstract: In order to provide an apparatus for chemical analysis capable of eliminating time consuming changing connections of flow paths and analytical elements, and of operating for analysis without any special knowledge, the apparatus for chemical analysis comprises a main body of analytical apparatus provided with sampling device for sucking sample, liquid controller for transferring the sucked sample and reagents, and detector for measuring the sample, and analytical unit provided with a liquid connector and a signal connector for connecting to the main body of analytical apparatus, and memory storing at least analytical method, and analysis of the sample is performed by attaching and fixing the analytical unit to said main body of analytical apparatus, transferring at least analytical method stored in the memory to the main body of analytical apparatus, and analyzing the sample in accordance the said analytical method.

Abstract: A method for automated control of a steam turbine during cyclic operation includes the steps of comparing current turbine loading with an anticipated load profile to generate a load error signal. Anticipated electrical load profiles correspond to the time of day, day of the week, month of the year, and historical data; operator input can vary such historical profiles as appropriate for unusual situations. The predicted load profile is categorized with respect to selected composite electrical load cycle profiles; weighted operating constraints are generated by means of a fuzzy inference calculation using electrical cycle profiles selected to correspond to the anticipated electrical load profile.

Abstract: Methods and systems for determining the identity and flow rate of a fluid are provided. Linearized output signals are provided. To determine fluid flow, a test fluid is passed through a conduit. A heater associated with the conduit is maintained a temperature greater than the temperature of the conduit in the presence of the test fluid. A measuring voltage is generated, wherein the measuring voltage is indicative of the voltage required to maintain the heater at the specified temperature. A data set is provided to a computer, which compares the measuring voltage with a reference voltage and determines the identity of the test fluid. Further, a flow function is applied to the data set and the fluid flow rate is calculated.

Abstract: In a process for determining the percentage of combustible gases in air by means of a detection element catalytically supporting the combustion, this detection element is heated with an excitation function according to a predeterminable current-voltage pattern, and the response function resulting from this is investigated with respect to the position of its maximum (differentiation). If a time interval limit (3) is exceeded by the maximum, a first gas type factor is sent to the evaluating circuit, and if the maximum does not reach the interval limit (3), a second gas type factor is determined and is evaluated as a calibrating value and for the classification of the combustible gases to be investigated.

Abstract: A boundary scan bus error reporting circuitry loads an unused sentinel bit pattern into the boundary scan instruction register in a conventional error reporting boundary scan test system. The unused sentinel bit pattern signifies that a fault exists somewhere upstream of the instruction register in the boundary scan circuitry associated with a specific integrated circuit. The special sentinel pattern is loaded into the instruction register in response to an illegal instruction control signal generated by an instruction decoder coupled to the instruction latch in the boundary scan architecture.

Abstract: A method for a sender to automatically distribute information to a receiver on a network using devices (such as printers and facsimile machines) and communication channels (such as electronic mail) defined in a receiver profile. The receiver profile establishes the properties and mode for receipt of information for receivers on the network and the profile is published in a network repository for all network users or is accessible by selected groups or individuals on the network. Receivers have additional control over network senders by defining an information filter which further controls sender channel access (to a receiver) by defining some channels as having priority of access such as direct or delayed access, as well as selectively permitting senders to override the receiver profile. Consequently, receiver profiles provide a variable receiver definable link to senders using multiple forms of media as well as multiple hardware platforms and network configurations.

Abstract: A diagnostic method in which data obtained from a real-time sensor are stored during the operation of a robot for later diagnosis of the operation state of the sensor. This method includes the steps of scanning an object by using a laser sensor, thereby obtaining sectional data; detecting a weld line position on the basis of the sectional data; storing in a memory the weld line position along with robot positions corresponding to the time of detection; and storing in the memory the sectional data when a predetermined robot position is reached with a conditional value set to "1", when the weld line position has first failed to be detected with the conditional value set to "2", or when the variation of the weld line position is larger than a predetermined value. The operation state of the sensor is traced on the basis of the weld line position and the sectional data stored in the memory, and various parameters for detection are set so that an optimum state for detection can be established.

Abstract: Apparatus and method are provided for intelligently controlling an electrical power distributor for a personal computer, its peripherals, and other devices. The apparatus includes a parallel interface; single-chip microcomputer; plurality of relays; power source connector; and plurality of electrical outlets. The parallel interface can be removably connected through a parallel cable to a parallel port of a personal computer. The single-chip microcomputer has a clock to keep time independent of the personal computer. In response to programming instructions from the personal computer, the single-chip microcomputer controls the relays to selectively connect and disconnect the power lead connector to the electrical outlets of the distributor. Communicating with the distributor is made user friendly by including a software prorgram for the personal computer that translates simple commands from the user into commands sent through the parallel port of the personal computer to the distributor.

Abstract: A voltage regulator controller including three types of data logs which are operator selectable and configurable. An operator can enable data logging to occur at specific times and intervals. The voltage regulator controller includes a real time clock/calendar and interval timer to support this function. In a preferred embodiment, the controller includes an event log, a snapshot interval log and a minimum/maximum metered parameter log. Advantageously, the event log can be programmed to monitor configuration changes made from the voltage regulator controller's front panel or from a remote device. The voltage regulator controller also includes a memory card interface which enables the log contents to be uploaded to a removable PCMCIA standard memory card.

Abstract: An apparatus for testing an electronic device, in particular an integrated circuit tester and specifically designed for testing memories or logic/memory combinations, provides a multiplicity of pin channels. Each pin channel includes a sequence controller communicating with a decompression control unit. This combination is extremely fast and allows to designate the respective pin channels to an address or a data pin of a memory or to a logic pin of a device under test. A central controller provides the necessary control instructions to instruction memories of the sequence controllers. All sequence controllers assigned to a logic pin execute basically the same program, wherein pin adaptation is performed by a vector memory. In contrast, sequencers assigned to an address pin execute different, pin-specific instructions. The architecture may be easily adapted to varying pin definitions and is based on the "per pin resource" approach. It may also be applied to board testers and other electronic testing devices.

Abstract: A method for computing the conformation and location that a protein fragment will obtain in binding to the active site of a receptor is provided. The invention relates to both the computation of conformation and location of natural ligands within an active site and the design of artificial ligands with useful binding characteristics.

Abstract: A dynamic realtime, inband routing mechanism is disclosed for a data communications network, which provides an Event Driven Interface to perform realtime, inband directed routing for load distribution and load balancing of data frames over one of a plurality of destination paths. The Event Driven Interface is programmed with control vectors to identify load balancing and load distribution bit patterns in the data frames on the data communications network. Enabling signals produced by the Event Driven Interface are applied to the control input of a multiplexer whose data input is connected to the data communications network. The multiplexer will steer the data frames from the data communications network to one of a plurality of output alternative routing paths, in response to the enabling signals it receives from the Event Driven Interface.

Abstract: An ultrasonic tracking system embodying the invention has an array of plural ultrasonic detectors at discrete locations, the plural detectors being responsive to an ultrasonic signal of frequency f emanating from a single remote transmitter to produce respective plural electronic signals corresponding to the ultrasonic signal as received at respective ones of the plural detectors, and a processor for determining from the plural electronic signals a direction of travel of the ultrasonic signal relative to the array of ultrasonic detectors. In order to provide range, a phase shift key encoder connected to the transmitter encodes every N cycles of the ultrasonic signal with one of a succession of encoder counts, while a phase shift key decoder coupled to receive an electronic signal from one of the plural detectors produces a new decoder count every N cycles of the electronic signal that are decodable.

Abstract: A computer controlled apparatus, such as a missile (10), has its various operational characteristics precisely measured at a test station (16), for example. The apparatus data processor software (14) is then modified so as to enable accessing process correction or compensation data and the apparatus program memory is reprogrammed with personalized operational characteristics for the given apparatus. In use, the software (14) compensates to achieve operation based upon actual apparatus characteristics rather than unassumed values averaged from manufacturing tolerances.

Abstract: A system and method for digitally detecting the presence of analyte particles within a sample is disclosed herein. Each analyte particle is disposed to emit an optical response upon illumination in a known manner. The digital analyte detection system includes optical apparatus for illuminating a multiplicity of distinct pixel regions within the sample so as to induce each of the analyte particles included therein to emit at least one optical response. The pixel regions are dimensioned such that the number of analyte particles included within each region is less than a maximum detection threshold proportional to variability of the optical responses.The digital detection system further includes apparatus for measuring the emitted signal emitted from each pixel region. A data processing network receives the measurements of the emitted signals and, based on the measurements, counts the number of analyte particles within each pixel region so as to determine the number of analyte particles within the sample.