摘要:
A bourdon tube for gas and liquid-filled thermometers and pressure gauges constructed by edge welding two strips of isoelastic nickel alloy to form a wall to wall low volume bourdon tube that exhibits a low ambient temperature effect and improved rangeability over all existing bourdon tubes used for temperature and pressure measurement and control.
摘要:
A digital thermometer, having a sensing tip that is integral with a heater, a display, and a microcontroller which samples for rise time and proportionally operates the heater to increase the temperature of the sensing tip in an alternating control sequence that includes a post-heating delay and, thus, the sensing tip quickly arrives at a stable temperature when no further heating is required.
摘要:
An automatic thermostat which automatically reprograms itself after a power outage without the need of a backup battery or other storage device includes a temperature sensor, a set temperature potentiometer, a setback temperature potentiometer and an ambient light sensor. The thermostat also includes a microprocessor which is responsive to signals from the temperature sensor, the set and setback temperature potentiometers and the ambient light sensor. The microprocessor controls a display which displays the set temperature, the setback temperature and the actual temperature. A power outage detector detects when there is a power outage and triggers the microprocessor to reprogram itself by rereading the signals from set temperature potentiometer and the setback temperature potentiometer. A relay is controlled by the microprocessor to selectively provide power to a heating or air conditioning unit.
摘要:
Heating pads using positive temperature coefficient (PTC) resistance material are subject to fire risk if one of the conductor wires between which the PTC material extends should break and produce an electric arc. Protection by fuse and a fuse-blowing circuit responsive to fire detection must allow for an immense inrush of current when the cold pad is turned on. A heat setting control using a microprocessor can reduce the fuse rating by chopping the a.c. heating current for a short start-up period following with full-on feed until the heat setting is reached. The presence of a microprocessor allows response to a safety circuit that detects a break in a heater feed or return conductor before much excess heat develops, so that the microprocessor can turn off the heater switch. That response is so quick that it can be confirmed by repeated detection after very short pauses before the heater switch (a triac) is turned off. The safety circuit producing the fault detection signal may be external to the microprocessor chip, or most of it can be built into the microprocessor chip, which then receives two inputs from a smaller circuit connected to the heating pad. A second triac can be used to shut off the heater if the heater switch malfunctions by locking in its "on" position.
摘要:
Temperature-indicting system including a mechanical temperature-indicating system including a bourdon tube for directly driving an indicating pointer, and an electrical temperature-indicating system including an electronic sensor, a transmitter and one or more electrical switches. The transmitter is modular and easily replaceable. Output of the pointer and the transmitter is synchronized relative to accuracy so that comparison of switch points of the switches that correlate temperature determined by the mechanical system and temperature determined by the electronic system enables detection of a failure or inaccuracy in one or both systems.
摘要:
An apparatus and methods for processing video data are described. The invention provides a representation of video data that can be used to assess agreement between the data and a fitting model for a particular parameterization of the data. This allows the comparison of different parameterization techniques and the selection of the optimum one for continued video processing of the particular data. The representation can be utilized in intermediate form as part of a larger process or as a feedback mechanism for processing video data. When utilized in its intermediate form, the invention can be used in processes for storage, enhancement, refinement, feature extraction, compression, coding, and transmission of video data. The invention serves to extract salient information in a robust and efficient manner while addressing the problems typically associated with video data sources
摘要:
A system and method for advising consumers how much to pay for goods and services by matching consumers' specific objective needs for product or service characteristics as well as subjective needs, such as certainty, closure, security, style or brand. The system and method provides an interactive method of providing this advice, information, referral and transaction capability in a step-by-step intuitive manner over an on-line network.
摘要:
Heating pads using positive temperature coefficient (PTC) resistance material are subject to fire risk if one of the conductor wires between which the PTC material extends should break and produce an electric arc. Protection by fuse and a fuse-blowing circuit responsive to fire detection must allow for an immense inrush of current when the cold pad is turned on. A heat setting control using a microprocessor can reduce the fuse rating by chopping the a.c. heating current for a short start-up period following with full-on feed until the heat setting is reached. The presence of a microprocessor allows response to a safety circuit that detects a break in a heater feed or return conductor before much excess heat develops, so that the microprocessor can turn off the heater switch. That response is so quick that it can be confirmed by repeated detection after very short pauses before the heater switch (a triac) is turned off. The safety circuit producing the fault detection signal may be external to the microprocessor chip, or most of it can be built into the microprocessor chip, which then receives two inputs from a smaller circuit connected to the heating pad. A second triac can be used to shut off the heater if the heater switch malfunctions by locking in its "on" position.
摘要:
An apparatus for exercise has a frame structure for hand holding standing up on a restrained universal mount fixed on a platform. A coil spring in compression and a stretched elastic cord laced around in tension restrains the universal mount providing adequate force for restoring the frame structure to its normal vertical position except as the user of the device deflected from that position. A two-axis sensor at the pivot center within the universal mount provides electrical inputs to a computer game programmed for video display. The position of the structure determines the direction of activity and the deflection specifies the amount of exertion input within the framework of a computer program for simulation of any of a variety of existing and new sports. The characteristics of the universal mount offer the player a challenge in terms of muscular strength, coordination and body balance.