Abstract: A control system for blending a rich stream with a diluting stream to obtain a blended stream comprises obtaining values for specific gravities of the rich and diluted streams, a ratio of densities of primary and secondary components in the rich stream and value corresponding to the concentration of primary component in the rich and the blended streams. Additional elements are utilized to obtain actual volumetric flow rates for the rich stream as well as the specific gravity of water in the rich stream and the diluting stream. An algorithm is utilized to manipulate the foregoing values and obtain a desired value for the diluting stream volumetric flow rate and control the flow rate accordingly.

Abstract: Primary and secondary controllers both receive independent digital representations of shaft speed. Only one of the outputs of the two controllers is used. In order to detect a fault and isolate it to one of the two controllers, comparison is performed on the response of each controller with the response of the other controller. In addition, the response of each controller is compared with a system mathematical model which predicts the response which each controller should provide to a given set of inputs. If the first comparison indicates that one of the controllers is bad, the comparison with the system mathematical model identifies the faulty controller and provides a signal which removes it from operation and enables the good controller to begin providing control signals.

Abstract: A medical timing system has a programmed computer controlled display and audible buzzer, with inputs from a timing switch and a readout button which are connected together so that pregnancy labor pains may be timed, contraction patterns may be rehearsed by an expectant mother, and fetus movements may be counted. The medical timing system is preferably hand-held and compact so that the timing switch and readout button may be easily actuated and so that accurate and reliable timing measurements may be made and recorded through use of the system.

Abstract: A particle size distribution analyzer includes a detector adapted to detect particles by electrical or optical differences from a medium containing the particles in dispersion and generate signals proportionally to the sizes of the detected particles, a threshold circuit adapted to remove noises or fragmental signals from the detected signals so as to obtain pulse widths at a constant position, a gate circuit adapted to decide the passage or non-passage of the particles through the threshold circuit, a counter circuit adapted to count the number of the particles fed from the gate circuit, a memory connected to the counter circuit, an arithmetic circuit connected to the memory and the detector, a controller circuit connected to the gate circuit, the memory and the counter circuit, and means for displaying or recording the data stored in the memory.

Abstract: A method and apparatus for extracting information from an object within a large interrogation zone by utilizing a retroreflective backing to define the location of the object and/or information on the object, and an apparatus designed to eliminate from consideration all specularly and diffusely reflected light otherwise present within the zone and thereby isolate the retroreflective backing within the zone. The apparatus then extracts the information which was defined by the retroreflective backing.

Abstract: A depth monitoring system includes a pair of inclinometer sensors mounted on the boom and on the dipper stick of a digging machine to measure electrically the angle of inclination of the boom and the dipper stick relative to the horizontal. Employing these two sensors, the position of the bucket connected pivotally to the free end of the dipper stick can be calculated by means of a simple geometric equation in which each trigonometric function is based on a single angle only. Additionally, preset and zero reference capabilities are provided.

Abstract: A door control system, particularly suited for multiple door rapid transit vehicles wherein car operating parameters including car speed sensing (5), traction propulsion sensing (7), and other indications of internal circuitry establish and continuously test for predetermined conditions under which a power operated door can be opened. A low speed detector (1) incorporates a micro-processor (8) and a no motion relay (3) to evaluate car and circuit operating conditions, providing control of all transit car doors. The micro-processor and associated control equipment also recognize predetermined failure modes. Occurrence of predetermined failure modes results in the overall system (1) reverting to a more conservative state. Coded indication (2) of failure modes is provided for easy indentification and corrective action by train operating crews.

Abstract: This is a display and control system which includes a computer and peripheral hardware for displaying deck board position data and deck board width data on both the upper and lower sides of a pallet. The system includes a row of light emitting diode cells for displaying deck board position and width for each side of a pallet and a manually controllable cursor cell which can be set at a selected deck board position along a row. Data entry controls are provided for supplying data to the computer for energizing display cells adjacent the cursor cell to represent both pallet deck board width and board position in each row and the computer stores the data to control a pallet nailing machine.

Abstract: An article sensor which defines an opening through which articles to be measured are propelled in a non-supported condition. Bounding the opening are at least two mutually perpendicular arrays of light sources and of photodetectors. The photodetectors constitute the inputs to a microprocessor controlled circuit so that the number and identity of photodetectors that are obscured by a passing article can be determined rapidly thereby enabling plural measurements of articles dimensions to be made during traversal of a single article. The microprocessor can be programmed to compute the volume of an article, the weight of an article or virtually any other characteristic of an article.A container filling machine which is controlled by the abovementioned microprocessor so that the aggregate weight applied to each container can be carefully measured and controlled, thereby assuring compliance with relevant fair packaging and labeling regulations without the waste attending overfilling of such containers.

Abstract: An apparatus for controlling and programming welding guns, constituted by a set of electronic component circuit boards enclosed in a casing provided with a keyboard and a programming and control display unit which are connected electrically together so as to enable various functions to be performed on the static switches of the welding gun to which the apparatus is connected, namely: a first so-called basic function, i.e.

Abstract: This invention relates to methods and apparatus for medical decision making. In particular, this invention coordinates the actions of two or more medical teams who are working toward a common goal. The apparatus used to achieve this objective consists of a control unit especially adapted for instructing, through algorithms, two or more teams of personnel to make observations and measurements, to answer questions, and to perform procedures independently and frequently simultaneously in a coordinated manner to achieve a common goal. The control unit interfaces with each medical team through an information display screen and data entry panel (I/O station).

Abstract: The subject device control system provides a new method of determining when resource consuming loads are to be disabled to prevent the total resource consumption from exceeding a predetermined threshold. This system bases the decision making process on past consumption, past load shedding activity and predicted future load activity. The controlling algorithm is applied to the present resource consuming situation for a plurality of different time interval configurations and the worst case result of these computations is used to control the load shedding.

Abstract: Apparatus and method for making and photographing computer graphic colored images by defining each computer graphic colored image as a plurality of constant color pixel groups, assigning one of a preselected number of colors to each constant color pixel group, assigning one of a preselected number of foreground/background numbers to each constant color pixel group so as to designate its location with respect to the other constant color pixel groups, and exposing a photosensitive material to each constant color pixel group displayed in a predetermined ordered sequence and color so as to maintain the predetermined ordered foreground to background relationship between the constant color pixel groups in the exposure of the photosensitive material to the overlapping areas between the constant color pixel groups.

Abstract: A particle size distribution analyzer comprising a particle detector adapted to produce signals in response to the sizes of particles by electrical or optical differences between a liquid and the particles dispersed therein, a plurality of comparators connected in parallel to said particle detector for producing pulses in correspondence with said signals, counters connected to each of said comparators for counting said pulses, a data input/output unit connected to each individual counter, whereby said input/output circuit receives signals sent in parallel from said counters, a keyboard unit connected to said input/output circuit operative to enable various conditions to be input from the outside, a central processing unit circuit, a read only memory and, a random access memory connected to said later input/output unit for statistically processing the pulse received, and a data output unit connected to said data input/output unit, said data output unit including at least a recorder.

Abstract: An instrument for monitoring the build-up of fouling deposits on the liquid-handling surfaces of cooling towers, heat exchangers and other apparatus, subject to liquid fouling, is disclosed in this application. The build-up is monitored by sensing the increasing drag on a rotor immersed in the liquid, as the rotor and adjacent stationary surfaces become fouled. The drag is measured by a torque transducer, which is connected to read-out devices by means of a computer. The instrument may be used as an integral part of a feedback control system, or for evaluating fouling control strategies. The computer enables the instrument to operate in different modes, as desired.

Abstract: A system and data network for a fluid register system used for the delivery of fluid commodities to customers at various delivery sites features a portable data capsule containing pricing information; an electrical fluid delivery volume measurement device; and a vehicular mounted calculator for retrieving the pricing data from said data capsule and calculating a billing amount for each fluid delivery with respect to a fluid delivery volume measurement.

Abstract: An apparatus for detection of flaws in currency having multiple misregistered images. Optical means scan a test note to provide a plurality of outputs each representative of a particular patch value of a particular scan line of the test note. Generating means provide a plurality of outputs each representative of a particular patch value of a particular scan line of a reference note which is generated in real time as the test note is scanned. The generating means includes means to insure that each generated reference patch value is provided for comparison with the corresponding patch value of the test note. Each reference patch value is generated for any value of misregistration between the multiple images within a predetermined tolerance.

Abstract: Containers pass through a radiation beam projected from a beam source to a detector. The detector output pulse rates at points where the container has passed partially into the beam and partially out of the beam are detected. Pulse rates during a measuring interval which lies between these points are divided by time units from a clock pulse generator to produce a signal representative of the average pulse rate during the interval. This signal is compared to a selectable reference signal. If a comparison is made, the comparator yields a signal indicative of whether or not material in the container was at a high enough level to attenuate the beam.

Abstract: This disclosure is concerned with a novel technique for automatically fitting the output response characteristic curve of a measurement sensor to that of an ideal or reference sensor through determination of output variations in response to the same input stimulus near one end or point of the curve, storing the differences for automatic correction of the measurement sensor output by effectively superimposing the curves at such end, determination of output variations at another end or point of the curve, and effectively relatively pivoting the measurement sensor output curve about the said one end to cause substantial superposition of the other end or point of the curve and the span therebetween, thereby to provide stored signals for automatically correcting the output response of the measurement sensor, when in subsequent measurement use, over the complete characteristic response curve between its ends or selected points.

Abstract: There is provided a method for measuring a parameter whose value is calculable as an integral with time of a function of at least one variable so as to make possible the use of a microprocessor when measurements of such variables are desired. The variable is sampled periodically at a frequency asynchronous with the wave form which the variable follows and then there is periodically calculated the value of the function by summing the values for the function determined by the samples taken during the time between the calculations, thus determining the desired integral.