摘要:
In a method and apparatus for measuring an original key, a line of the light is focused onto the key surface in a direction perpendicular to the key surface. A camera, or other type of detector is disposed to receive light deflected by the key at an oblique angle. The keyway and keycode of the key can be determined from the deflected pattern of light.
摘要:
An electronic piano has a keyboard and an electronic piano circuit connected to a micro-processor used to control a CRT device to provide a video note display concurrently with the depression of one or more keys. A keyboard representation located adjacent the screen of the CRT device is associated with lights used to indicate the key or keys that are played. Manually operated controls cooperate with the micro-processor to allow the back clearing of the screen one note at a time, remove all the notes, retain all the notes, indicate sharp or flat mode of each note, and indicate the duration that a key is depressed by elongating the note on the screen. A metronome unit is used with the micro-processor to provide a visual beat marker on the screen that sequentially moves across the screen. A movable frame connects the CRT device to the piano.
摘要:
An ignition control module for an internal combustion engine is incorporated directly into an existing ignition module package design and thereby preserves stock appearance, and is cooperative with stock magnetos, distributors and coils. The module incorporates both ignition pulse generation and adjustable rev limiting. A pushbutton switch allows manual selection of a preferred RPM to rev limit to, and the selection may be carried out under the hood while the engine is running. A plurality of light emitting diodes display the selected rev limit RPM by flashing a corresponding LED, and when not being used to select rev limit RPM, display the engine RPM in bar graph format. A digital flywheel is provided to reduce adverse affect of mechanical jitter in distributor mechanical parts, to improve timing of individual sparks. Dwell and timing curves are programmed into a microprocessor, and may be changed through external input.
摘要:
A method and apparatus are described for controlling demand of a fluid. The method includes measuring a fluid supply pressure in a supply pipe, determining that the fluid supply pressure is lower than a predetermined threshold supply pressure, and directing a control signal from the fluid information unit to the,one or more demand control units to reduce demand for the fluid. In addition, a method and apparatus are described for measuring density of a fluid flowing through a demand pipe. The method includes determining that fluid flow through the demand pipe is stable, measuring fluid flow rate through the demand pipe, preventing the fluid from flowing into the demand pipe for a sample period of time, measuring a drop in fluid pressure in the demand pipe during the sample period, and determining the density from the measured pressure drop. Also, a utility meter for metering a fluid flowing through a supply pipe and a demand pipe having an audible indicator to provide an audible signal to a user is described.
摘要:
In a method and apparatus for duplicating an original key, the keyway and keycode of the original key are measured and duplicated in a preform. The preform used in the duplication process need not include any keyway or keycode prior to the duplication process and, therefore, a single type of preform may be used in generating duplicates of many different types of keys. The apparatus may be automated to take the measurements of the original key and to cut the duplicate key, thus reducing the possibility of producing a nonfunctional duplicate.
摘要:
A method and apparatus are described for controlling demand of a fluid. The method includes measuring a fluid supply pressure in a supply pipe, determining that the fluid supply pressure is lower than a predetermined threshold supply pressure, and directing a control signal from the fluid information unit to the one or more demand control units to reduce demand for the fluid. In addition, a method and apparatus are described for measuring density of a fluid flowing through a demand pipe. The method includes determining that fluid flow through the demand pipe is stable, measuring fluid flow rate through the demand pipe, preventing the fluid from flowing into the demand pipe for a sample period of time, measuring a drop in fluid pressure in the demand pipe during the sample period, and determining the density from the measured pressure drop. Also, a utility meter for metering a fluid flowing through a supply pipe and a demand pipe having an audible indicator to provide an audible signal to a user is described.
摘要:
A storage lift includes two vertically extending tracks mounted to a wall surface such as a garage wall. The tracks guide associated sliding members through vertical motion up and down adjacent the wall. The sliding members are in turn hinged to a platform that serves in alternative embodiments as a storage platform base or a variable-height work surface, and which may also be folded compactly when not in use or during shipping. A full box framework is provided for most applications, and panels are slidable within framework grooves or brackets to fully enclose the platform. A cover may optionally be provided as required. In the preferred embodiment, an electric motor is provided within the storage platform base for motive power, and a key switch control is provided to safely actuate the motor. The electric motor in the preferred embodiment is attached to the tracks through a combination of cables and pulleys, though other techniques are contemplated.
摘要:
The present invention discloses a method and apparatus for electronically deterring an animal from approaching an exclusion area around an exclusion unit or from entering or leaving an area bounded by a wire. The animal is provided with a collar unit, which includes a sensor adapted to sense the strength of electromagnetic signals generated by the exclusion unit or wire and a correction unit adapted to provide correction to the animal in response to a sensor output. The portable unit reports to a central controller which selects a correction strategy, such as level of correction to be applied to the animal approaching the perimeter. The controller provides warnings to the user, including warnings for when the battery in the collar unit goes low and when the animal stays in a correction zone for too long. The controller may control a number of exclusion units and/or power units, and may select an appropriate correction for one of a plurality of animals. The apparatus, with a central controller, may also be used to contain animals within one or more containment areas.
摘要:
A method and apparatus for monitoring and digitally displaying primate heart rate and systolic blood pressure product information. The apparatus has a microprocessor programmed to respond to signals relating to heart rate and systolic blood pressure and provide a digital output of the current product information and a two minute average of the product information. Separate LED displays are used to present the current and two minute average product information. An audible alarm operates to alert the personnel caring for the patient in the event that the pulse rate and blood pressure product exceeds a selected level. Operator controls are operable to read the input values, silence the alarm, read the external preset trip point, read the internal power supply and reference voltages, and verify the operations of all segments of all digits.