Abstract: A grounded operations facilities management system is disclosed that can facilitate communications in grounded operations facilities. Specifically, a method is provided for managing and supervising trucks as they park in truck spots to await freight deposits. Check-in instances reflecting, among other things, the actual truck spot a fleet vehicle is parked in can be retrieved by a client from a server or database in operable communication with the client, and upon instantiation and execution of several processes, the check-in instance can be updated and retrieved/served as needed throughout the system. The system can be managed and controlled via a geofence, such that fleet vehicle operators can only check-in to particular truck spots when located within the geofence.

Abstract: A remote insect monitor and associated method include a container configured to allow an insect attractant within the container to escape into ambient air proximate a landing area. At least one detection sensor generating sensor data of insects proximate the landing area, and a control module has a processor and a memory storing machine readable instructions executable by the processor to process the sensor data and count insects proximate the landing area. The remote insect monitor and associated method may also include an analyzer for analyzing an insect of interest to determine whether the insect carries a disease, wherein the control module sends an indication of whether the insect carries the disease to the remote server.

Abstract: A fishfinder has: a transducer capable of transmitting an ultrasonic wave underwater and receiving a reflected wave of the ultrasonic wave; a display part that time-sequentially arranges a detection image based on a reception signal, caused by receiving the reflected wave with the transducer; a first depth calculation part that calculates a first depth as a depth of the bottom; a recognition part that performs recognition on an object as a fish school; a second depth calculation part that calculates a second depth as a depth of a position of the object; a distance calculation part that calculates a distance from the bottom to the position of the object; and a distance display part that displays the distance calculated with the distance calculation part, in correspondence with the position of the object in the detection image displayed on the display part, on the display part.

Abstract: Quantity analysis is disclosed. A quantity identification of an amount of content included in a container is received from a container cover of the container. The quantity identification is analyzed along with a history of past quantity identifications received from the container cover over time to determine an analysis result. An action associated with the content of the container is performed based on the analysis result.

Abstract: The present invention relates to an equipment for attracting, capturing, counting and monitoring flying insects of all species and is particularly applicable to those which cause damage to agricultural crops and are considered to be hazardous to public health and comprises a Ultra Violet lamp in the colorless plastic ring and a pheromone reservoir. The plate with the insect inlet channels houses the Infra-Red sensors and the photographic camera, which in turn is housed in a sealed housing, The upper part which fits in turn in the previously said watertight housing, houses the photovoltaic panel, the microprocessor, the Global Position System GPS receiver, the Global System for Mobile signal transmitter and receiver module, and the Wireless Fidelity—WIFI transmitter and receiver module, a rechargeable battery and a micro USB socket.

Abstract: Technologies for collaborative optimization include multiple Internet-of-Things (IoT) devices in communication over a network with an optimization server. Each IoT device selects an optimization strategy based on device context and user preferences. The optimization strategy may be full-local, full-global, or hybrid. Each IoT device receives raw device data from one or more sensors/actuators. If the full-local strategy is selected, the IoT device generates processed data based on the raw device data, generates optimization results based on the processed data, and generates device controls/settings for the sensors/actuators based on the optimization results. If the full-global strategy is selected, the optimization server performs those operations. If the hybrid strategy is selected, the IoT device generates the processed data and the device controls/settings, and the optimization server generates the optimization results.

Abstract: An automated ridesharing dispatch system includes a communications interface configured to electronically receive ride requests from a plurality of users and a memory configured to store a capacity threshold for each of a plurality of ridesharing vehicles. The system also includes at least one processor configured to process the ride requests received from the communications interface and to assign to a single ridesharing vehicle the plurality of users for pick up at a plurality of differing pick-up locations and for delivery to a plurality of differing drop-off locations, determine a route for the ridesharing vehicle, receive from at least one sensor within the ridesharing vehicle, information indicative of a current number of passengers in the ridesharing vehicle, and determine whether to assign additional users to the ridesharing vehicle based on the received information from the sensor and the capacity threshold associated with the ridesharing vehicle.

Abstract: The present invention relates to a medical device, in particular to a blood treatment apparatus, having a control and processing unit, having at least one structure-borne sound emitter and having at least one structure-borne sound sensor, each configured for coupling to coupling points of a medical tubing kit which can be coupled to the medical device, wherein the filling level of a bubble chamber arranged in the tubing kit can be determined at the tubing kit via the control and processing unit based on the measurement of the structure-borne sound.

Abstract: A programmable retail building kit comprising a controller unit to control a set of accessory article members is provided to enable a user to design, build and program a article. This retail building kit is also provided with a remote controller having a visual display unit and a sound transducer for the user to interface with the controller unit.

Abstract: A controller for use in a power converter includes a comparator that receives an output signal representative of an output voltage of the power converter. The comparator generates a constant voltage signal in response to a comparison of the output signal and a reference signal. A switch request circuit receives the constant voltage signal and a fault signal. The switch request circuit generates a request signal in response to the constant voltage signal and the fault signal to control switching of a power switch of the power converter to control a transfer of energy from an input of the power converter to the output of the power converter. A power limit fault circuit receives the request signal. The power limit fault circuit generates the fault signal to indicate a fault existence in the power converter in response to a rate of consecutive request pulses greater than a threshold.

Abstract: A method for identifying a loading bay at a facility to which a vehicle is reversing, the method including determining, at a sensor apparatus connected with the vehicle, that the vehicle is reversing; capturing an image of the loading bay; and determining, from the image, the loading bay at the facility to which the vehicle is reversing.

Abstract: An ultrasonic sensor (10) includes a transmission and reception unit (11) for transmitting and receiving an ultrasonic wave, a holder (12) and an attachment (13) for fixing the transmission and reception unit (11) to the bumper (1) of a vehicle, and light source units (14a, 14b) mounted in a back side of the bumper (1). The holder (12) is shaped so as to be exposed on a surface of the bumper (1), and guides light beams emitted by the light source units (14a, 14b) to the surface of the bumper (1), to project the light beams from a light projecting surface (12a) to the outside of the vehicle.

Abstract: Technologies for collaborative optimization include multiple Internet-of-Things (IoT) devices in communication over a network with an optimization server. Each IoT device selects an optimization strategy based on device context and user preferences. The optimization strategy may be full-local, full-global, or hybrid. Each IoT device receives raw device data from one or more sensors/actuators. If the full-local strategy is selected, the IoT device generates processed data based on the raw device data, generates optimization results based on the processed data, and generates device controls/settings for the sensors/actuators based on the optimization results. If the full-global strategy is selected, the optimization server performs those operations. If the hybrid strategy is selected, the IoT device generates the processed data and the device controls/settings, and the optimization server generates the optimization results.

Abstract: An in-vehicle lighting device for alerting a driver driving a vehicle to an obstacle present in a vicinity of the vehicle, which obstructs driving of the vehicle. The in-vehicle lighting device includes: a light emitter that is installed in an interior side of a pillar in a front part of the vehicle and that emits light of different chromatic colors; a controller connected to the light emitter; and a detector that is connected to the controller and detects the obstacle present in the vicinity of the vehicle. When the detector detects the obstacle present in the vicinity of the vehicle, the controller causes the light emitter to emit light having a color according to a characteristic of the obstacle detected.

Abstract: Systems and methods are disclosed for truck load fulfillment by tracking geographical location of a device of a truck driver relative to a point of interest for each truck load; matching the geographical location of the device to a category of interest associated with the truck driver; sending a notification to the device of a nearby position of the load, the nearby position of the load related to the category of interest, the notification sent in response to proximity of the geographical location of the device relative to the position of the load.

Abstract: A system method to enhance vehicle-environment perception are provided. The system includes a memory comprising one or more executable instructions, a controller configured to read and execute the one or more executable instructions, a camera configured to view or capture or view and capture an image of a selected portion of the vehicle environment, a display configured to exhibit information, a user input configured to allow one or more commands to be provided to the system. The executable instructions moreover enable the controller to operate the camera based on the one or more commands, retrieve information of the selected portion of the vehicle environment, generate perception information from the retrieved information, and exhibit the perception information.

Abstract: A navigational aid system for fishermen comprises a computer that is connected to the Internet. The computer accesses a high resolution map in the vicinity of a fishing boat. The map depicts the ocean temperature and depth profile in relation to marked latitude and longitudinal indicators. A specialized GPS system in communication with the computer depicts the latitudinal and longitudinal position of the fisherman's boat. The computer executes a separate program that has a transparent window overlaying the map. A user selects two points, one point at a time, on the map and enters corresponding latitude and longitude bearings consistent with those shown on the map. The separate program receives the GPS data and plots the boat position in an orthogonal coordinate system based on the two points selected and their corresponding coordinates. The map is optionally provided with data concerning weather and buoy or wreck hazards in the vicinity of the boat, together with details concerning the coastline.

Abstract: A feature extracting unit obtains sensor data from a plurality of sensors to calculate each feature. When an event determining unit determines the occurrence of an event based on each feature, a display data constructor generates remote-controller display data for displaying the event, and controls a remote-controller display device to display the remote-controller display data. When a user decision is input from a user input IF based on this display, a control unit controls the sensors to be turned ON or OFF. When an infrared sensor detects an abnormality, a microwave sensor whose power consumption is small after the infrared sensor is turned ON. When the microwave sensor detects an abnormality, a video camera and a microphone are turned ON, and the microwave sensor is turned OFF. A communication unit wirelessly transmits an image signal captured by the video camera and an audio signal processed by the microphone.

Abstract: A depth display device for use with a flasher type fish finder system including a primary unit and a transducer assembly. The depth display device includes an enclosure, a microcontroller, a display panel, a transducer port, and an interface cable. The transducer port is configured for connection with the transducer assembly cable. The interface cable terminates at a connector configured for connection with a receptacle of the primary unit. During use, the display device establishes an electrical connection between the primary unit and the transducer cable such that drive signals generated by the primary unit are delivered to the transducer assembly, and return signals generated by the transducer are delivered to the primary unit. The microcontroller samples the transmitter and return signals to determine a depth of a body of water, and operates the display panel to display the determined depth.

Abstract: A measurement system for determining a liquid fill level of a tank, including a floating sensor configured to float on the surface of a liquid contained in the tank, at least three reference sensors mounted at a hull of the tank in a spatially fixed arrangement, and a control device to control the floating sensor and the reference sensors, wherein at least one of the floating sensor and the reference sensors can emit an acoustic signal to the remaining sensors, wherein the remaining sensors can receive the emitted acoustic signal, and wherein the control device is configured to determine signal travelling times of the acoustic signal from the emitting sensor to the receiving sensor, to compute a spatial position of the floating sensor with respect to the reference sensors from the signal travelling times, and to determine the liquid fill level using the computed spatial position of the floating sensor.

Abstract: A touch panel device (display device) acquires a first sensor image, a second sensor image, and a third sensor image. The touch panel device displays acquired images in respective divided areas of a display screen. The touch panel device detects a predetermined touch gesture and detects an operated location of the touch gesture. The touch panel device identifies which image the operated location indicates. The touch panel device performing processing corresponding to the identified touch gesture (scrolling or zooming of a display image), and changes a direction or a motion range of the processing according to the identified sensor image.

Abstract: A depth display device for use with a flasher type fish finder system including a primary unit and a transducer assembly. The depth display device includes an enclosure, a microcontroller, a display panel, a transducer port, and an interface cable. The transducer port is configured for connection with the transducer assembly cable. The interface cable terminates at a connector configured for connection with a receptacle of the primary unit. During use, the display device establishes an electrical connection between the primary unit and the transducer cable such that drive signals generated by the primary unit are delivered to the transducer assembly, and return signals generated by the transducer are delivered to the primary unit. The microcontroller samples the transmitter and return signals to determine a depth of a body of water, and operates the display panel to display the determined depth.

Abstract: A plotting system and method for plotting radar and/or sonar signals on a bump map, with a simulated height of each data point representing a corresponding signal strength. The plotting system may comprise a processing device for associating particular signal strengths with normal vectors. The normal vectors may be used to determine the simulated heights to be illustrated on the bump map. The plotting system may also comprise a display for graphically displaying the bump map. Furthermore, the processing device may also associate particular signal strengths with particular colors, such that both color and simulated height may illustrate the strength of the plotted signals.

Abstract: A system and method are provided for automatically tracking the movements of an acoustic source relative to two or more microphones possibly mounted in a portable device. The microphones are mounted so that they may be separated from an acoustic source that can be more than three inches from the portable device. By automatically tracking the location of a portable device, a directional response of unidirectional microphones in a far field setting can be steered so that the radial axis of the directional response aligns with the path in which the acoustic wave travels from the source to the microphones. By tracking the source and steering the directional response of the microphones, the system can thereby properly delay and filter electrical signals added to the outputs from corresponding microphones to maximize the signal-to-noise ratio of the ensuing signal.

Abstract: A method for measuring a distance of an object with a distance measuring unit, the method including: sending a first signal from the distance measuring unit toward the object; receiving a second signal from the object; and measuring the second signal via the distance measuring unit; wherein the distance measuring unit is enclosed within an electronic meter that is attachable to a fuel heating tank, the electronic meter used for tracking, verifying, and recording one or more variables.

Abstract: The invention is a portable human height measuring device. The device consists of an ultrasonic distance sensor, a controller and several output units. The ultrasonic distance sensor measures a person's height. The control unit converts the electronic signals from the ultrasonic sensor to proper measuring standards. The measurement output units displays, announces, or/and prints the measurement. The device is integrated onto a baseball like cap. The ultrasonic sensor is mounted on the sun visor of the cap. The control and output units are mounted on the crown of the cap. A switch is mounted on the top of the inner cap. When the head of the person wearing the cap touches the switch, it triggers the ultrasonic sensor to start measuring. The person's height is then converted to the proper measuring unit, and communicated to the person via output units.

Abstract: A distance measuring and monitoring device equipped automobile reverse radar comprises: a photocoupler camera with a wide-angle lens installed at an automobile rear end for taking pictures of possible obstacles behind the automobile body; a distance measuring inductor for calculation of lateral distance between two lateral corners of the automobile body and an obstacle; and a power supply for supplying power to the photocoupler camera, the distance measuring inductor, and the display. The image of the obstacle is mirror-image processed, then forwarded to an image synthesizer for image synthesization, and transferred to a video processor and shown in a display. A reverse gear signal is the effective signal for triggering the power supply.

Abstract: A compact self contained portable, buoyant, water depth and temperature recording device. Allowing the user to gather depth recordings for safety and sporting situations. With it's simplicity of use, portability, and minimal storability factors , makes the units capabilities of use extend beyond the present large and permanent mounted counterparts.

Abstract: A device for determining the distance between the rear of a trailer and a loading dock is disclosed which assists a driver backing the trailer up to the loading dock by visually and continuously letting the driver know how close the rear of the trailer is to the loading dock, thereby providing information to prevent the rear of the trailer from colliding with the loading dock. The distance between the back of the trailer and the loading dock is determined by an ultrasonic transducer which is mounted onto the side of the loading dock toward which the rear of the trailer will be backed. A display module mounted on the loading dock provides a numeric indication of the distance between the rear of the trailer and the loading dock.

Abstract: A vehicular position monitoring system includes an integral mirror video display. The display is capable of showing various fields of vision from various parts of the vehicle and can be strobed by the vehicle operator. The position monitoring system can be combined with a distance measurement system so that alpha-numeric graphics of distance between a vehicle and an object behind the vehicle can be displayed with the video image of regions seen from various points on the vehicle.

Abstract: A small, compact, easily mountable ultrasonic transducer for measuring the filling level in a container is provided, which transducer transmits virtually no oscillation energy to the container, having a can-shaped transducer housing (1), an electronics housing (2) connected to the transducer housing (1), a transducer element (4), arranged in the transducer housing (1), for the transmission and reception of ultrasonic pulses, a union ring (3) for the sound-decoupling securing of the ultrasonic transducer on the container, in which ring the transducer housing (1) is supported coaxially with respect to the union ring (3) and is fixed therein against displacement in the axial direction, and two resilient elements (7, 8) which are arranged between the transducer housing (1) and the union ring (3) and by means of which the transducer housing (1) and the union ring (3) are held spaced apart from each other in the radial direction in such a way that there is no direct mechanical coupling between them in the radial di

Abstract: A solid state depth locator comprises an LCD display having a plurality of LCD segments for providing a real time output indicative of the depth of targets in a body of water. A drive circuit drives each segment of the plurality of LCD segments. A transducer, transmitter and receiver operate together to provide a real time data signal to the drive circuit for driving each segment of the plurality of LCD segments, the real time data signal having a time period and being representative of the presence of targets in the body of water. A clock provides a clock signal to the drive circuit for clocking the real time data signal serially into the LCD drivers. The clock signal has a plurality of clock pulses within the time period of the real time data signal corresponding to the number of LCD segments. A grey scale circuit is provided for varying the intensity of each segment of the LCD display in relation to the strength of the real time data signal.

Abstract: A fishfinder having a real time or A-scope display with a numerical readout indicating the diameter of the transducer beam on the bottom of the water body. Further, an indicia indicating the position of the boat and downwardly diverging lines corresponding to the transducer beam are overlaid on the display.

Abstract: A vehicular distance measuring system includes a distance measuring device for detecting a distance to an object and, in response, supplying a distance signal. An ultrasonic transducer mounted in a vehicle taillight or running light assembly is used to ultrasonically detect and range objects in back of, and along side a vehicle in which the system is installed. A display includes (i) a vehicular mirror having an image reflecting surface with a transparent window portion located therein, and (ii) a digital display mounted on the vehicular mirror and viewable through the window portion. The digital display is responsive to the distance signal for displaying the detected distance to the object. The distance measuring device includes a comparator for comparing the distance to the object with a predetermined threshold distance and, in response, supplying a display unblank signal.

Abstract: A passage is periodically scanned by a plurality of ultrasonic transmitters/receivers (sensors) arranged on the ceiling of the passage in two lines to calculate the height of an object to be measured to each sensor and the presence or absence of the measured object(s), moving direction(s) thereof, and the number thereof are reckoned from changes in sensed height and sensing time for each sensor induced by passing an object to be measured through the passage, and the position and a change in position with time of each sensor which senses the measured object concerned to count the number of passers-by in each moving direction. The presence or absence of the object to be measured and the number to be counted are decided in accordance with changes in sensed position and sensed height and the interrelation thereof, so that the number of sensors can be reduced and the number of passers-by can be counted at a high accuracy even when a plurality of persons pass under the sensors in a group.

Abstract: A distance measuring device including a casing bearing a visual display and incorporating therein a transmitter for directing signals toward a selected surface; a receiver for detecting echoes from the selected surface; distance calculating circuitry for measuring the distance to a selected surface in accordance with the transit time of the signal; visually displaying the calculated distance; memory for storing at least two displayed distances measured in perpendicular directions; multiplication circuitry for multiplying the stored measurements; and visually displaying the product of the multiplication. The device further includes a key to effect the operation of the device whereby a distance is displayed, another key to initiate the storage of a displayed distance; and a key to initiate the multiplication of the stored distance measurements.

Abstract: A hand held electronic grading level which automatically and accurately calculates the grade of a ground plane and indicates whether said grade is level. The grading level comprises a telescopic site level and a sonar system that is coupled to a microelectronically controlled calculator and a digital read out display. The sight level permits the grading level to be aligned horizontally with a distant sight target. The sonar system then generates an acoustic pulse which is reflected off the ground plane and received at a detector. The elapsed time between the transmission and receipt of the acoustic pulse provides an indication of the vertical elevation from the gorund plane to the sonar system. This elevation is displayed and compared to the known elevation of the distant sight target. The deviation between the shot and known elevations is also displayed to indicate the actual grade of the ground plane and whether said ground plane is level.

Abstract: A loading dock range finding system is provided for permitting a driver of a vehicle backing towards a loading dock to determine a distance of the back end of the vehicle from a reference point at the loading dock. An ultrasonic transmitting and receiving transducer is positioned adjacent the loading dock for sending signals towards a back end of the truck, which are reflected and received by the transducer. A display unit is connected to the transducer and is mounted at a location adjacent the loading dock so that a visual display on the display unit can be easily viewed by a driver of the vehicle looking through his rear view mirror. A distance between the back end of the vehicle and the reference point is displayed in reversed image fashion on the visual display so that when the driver views the image through his rear view mirror, it is not a reversed image.

Abstract: A sonic distance-measuring device (10) for use in air includes three transducers (14, 16, and 18) in an array of transducers, which are driven in a predetermined phase relationship so as to achieve a beam width that is substantially less than that which can be achieved by any of the transducers individually. To enable the user to aim the device (10) effectively, a lamp (20) is provided to shine along the sonic beam and thus help the user direct the beam at a desired target. To conserve energy and increase the ability to distinguish the light beam from ambient light, the lamp (20) is pulsed rather than driven steadily.

Abstract: A system for measuring the level of a fluid in a tank comprises a plurality of reflectors positioned in the tank with the reflectors being a known distance from one another and a first reflector being an unknown distance from the top of the tank and an apparatus for producing and outputting a sonic signal and for receiving echoes from the plurality of reflectors and a surface of the fluid in the tank. The apparatus produces electrical signals representative of the received echoes. The apparatus includes a processor responsive to the electrical signals for, (i) calculating the distance between the apparatus and the first reflector, (ii) calculating the distance between a last reflector and the fluid surface, and (iii) determining the total distance from the apparatus to the fluid surface based on the distances calculated in (i), (ii), and the distance between the first and last reflectors.

Abstract: Apparatus and a method for displaying depth sounding data with nautical range are disclosed for use on vessels or the like, the device including a transceiver for transmitting an acoustic signal downwardly through surrounding water and for receiving echo signals, a motion sensor for determining nautical distance, a microprocessor for storing and conditioning the echo signals and distance signals and a display device for providing an XY display of underwater conditions represented by the echo signals. Range display means associated with or included in the display device and operated by the microprocessor display nautical range of a selected and preferably adjustable point on the X axis. The microprocessor includes a range memory stack, a stack manager and an internal register for storing bytes or distance data for successive vertical scans. The device also preferably includes a differential temperature sensor.

Abstract: Range finding equipment is employed in a nuclear reactor to monitor the spacing between structural components (22, 24) of the reactor which are under stress. A manipulator (32) carries a pair of send-receive ultrasonic transducers (30) arranged back to back so as to direct ultrasound signals towards reflectors (26, 28) associated with the structural components to be monitored. The transducers are pulsed with signals derived by gating a few cycles of a sustained reference signal of sine wave form and the resulting echo signals can be used to provide transit time and phase displacement information from which the spacing between the relectors (26, 28) can be derived with a high degree of precision.

Abstract: A depthfinder has a color LCD display without a polarizer. This permits viewing of the display in bright sunlight, such as would be ordinarily used for fishing, without washing out of the display. Additionally, the provision of a LCD display without a polarizing filter permits viewing of the display even by a fisherman wearing polarized sunglasses without rainbow effects or fringing effects. A micrprocessor is employed to drive a color LCD display, the display having two primary colors red and green, which can be combined to form a yellow color. Additionally, a fourth color exists when the overlying pixel elements are in an off state, the color being black. A program memory provides multicolor display functions including zoom, numeric indications and numeric adjustments, and a vertical line of a predetermined color to separate the halves of a split screen zoom display.

Abstract: An improved microprocessor-controlled sonar depth sounder, which is automatically operative to detect and lock to the bottom of a body of water, fill in the display below the detected bottom, change display scales in response to the detected bottom going off-scale, and reformat the entire display in response to a scale change. A memory is provided for storing target data up to the operable depth limits of the device, thereby allowing display reversing and display expansion or "zoom" of a predetermined portion of the display selected by a zoom cursor. The zoom or cursor is variably positionable at different depths. The device employs an improved variable sensitivity amplifier. Also disclosed is an improved water-resistant switch construction for marine electronic equipment.

Abstract: Apparatus for sensing distances in air by transmitting an ultrasonic pulse and measuring the time for return of an echo from a target object is characterized by ability to measure distances to multiple target objects. Preferably the apparatus defaults by displaying the distance to the nearest target but is provided with a push button which when pressed once causes display of the distance to the next target further away, when pressed again causes display of distance to a target after that and so forth. This novel function may be accomplished by discrete logic components or using a microprocessor.

Abstract: A plurality of ultrasonic transmitting elements and ultrasonic receiving elements are provided and are electrically switched in a sequential manner to change a region over which the existence of an object is to be detected, thus allowing the existence of an object to be detected over an extended range. The distance to the object and a particular region in which it is detected are displayed. The ultrasonic transmitting elements and the ultrasonic receiving elements are alternately disposed in a linear array. When switching the region over which the existence of an object is to be detected, the switching of the ultrasonic transmitting elements takes place in an alternate fashion with the switching of the ultrasonic receiving elements, thus changing the region at an interval corresponding to one pitch with which the elements are disposed in the array.

Abstract: In the fish sonar, the temperature and the hydrogen ion exponent in the sea are recorded or displayed on the recording medium or display of the recording or displaying device with digital echo signals of an ultrasonic wave corresponding to a base line, a school of fish and the bottom in the sea. The fish sonar need not have an exclusive device for measuring temperature and hydrogen ion exponent in the sea.

Abstract: This invention is of an ultrasonic proximity switch having a range selection control circuit. The range selection control circuit is in this instance separated from the sensor by being installed in a separate housing which can be mounted in the switching unit. It is equipped with a potentiometer in the form of encoding switches and an actual value display which can be designed in the form of an LCD design. In addition, various selector switches can be mounted in the housing.

Abstract: From a first aspect this invention provides a missing pulse detector for determining the true termination time of a sequence of pulses in a signal of an assumed predetermined length having a rising edge and a trailing edge which may include pulses which do not reach a predetermined threshold, the detector including a counter connected to count pulses exceeding said threshold, up to a predetermined number, an oscillator for producing pulses at twice the frequency of the pulses in the signal and an enabling circuit for allowing pulses from the oscillator to pass to the counter only after the termination of a sequence of threshold-exceeding pulses from the signal.

Abstract: A computer system is proposed for finding and displaying the depth and depth related values of an object in an aquatic environment in which and LCD display is subdivided into segments each representing a fraction of the total depth range in which the system is operating as well as a fraction of the transit time for the transmission of pulses within the depth range. Each segment is addressed and activated in response to the presence of a receiver output in the microprocessor for a given number of consecutive time-scans, thus providing a quasi-analog visual display of depth on the array of the segmented scale.