摘要:
Embodiments may include systems and methods capable of processing an original signal by selecting and mirroring portions of the signal to create a new signal for further analysis. In an embodiment, the signal may be a photoplethysmograph (PPG) signal and the new signal may be further analyzed using continuous wavelet transforms. Any suitable number of reconstructed new signals may be created from the original signal and scalograms may be derived at least in part from the new signals. Ridges may be extracted from the scalograms of the new signals and secondary scalograms may be further derived from the ridges. A sum along amplitudes technique may be applied to a selected scalogram and may be plotted as a function of the scale of the scalogram. Desired information, such as respiration information within the original signal, may be identified from the plot.
摘要:
A monitoring system includes a portable alarm having a base unit with an electronic package. At least one sensor is associated with the electronics to transmit signals to the electronics in the event of a breach. The electronic package in turn signals a central monitoring station, as well as transmits a signal to an audible or visual alarm coupled with the base unit. Also, the base unit includes a device to selectively program the electronics to enable the user to utilize particular programs. A bracket, which retains and secures the base unit, may be secured to a surface to enable desirable positioning of the base unit within a structure.
摘要:
A system of cordless outdoor power tools includes a plurality of hand-held cordless outdoor power tools, with each outdoor power tool including a housing and a motor assembly with a motor. The system may include and at least one battery pack removably attachable to one or more of the outdoor power tools. The at least one battery pack, when attached to a given tool, provides a nominal output voltage of approximately 28 volts or greater to the motor of the tool. One or more of the outdoor power tools with attached battery pack has a power output to weight ratio of 70 watts per pound (W/lb) or greater.
摘要:
An illumination system including a light source, a light guide including an output surface, a first interference reflector positioned between the light source and the output surface of the light guide, and emissive material positioned between the first interference reflector and the output surface of the light guide is disclosed. The light source emits light having a first optical characteristic. The first interference reflector substantially transmits light having the first optical characteristic and substantially reflects light having a second optical characteristic. The emissive material emits light having the second optical characteristic when illuminated with light having the first optical characteristic.
摘要:
An illumination system including a light source, a light guide including an output surface, emissive material positioned to receive light from the output surface of the light guide, and a first interference reflector positioned between the output surface of the light guide and the emissive material is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The first interference reflector substantially transmits light having the first optical characteristic and substantially reflects light having the second optical characteristic.
摘要:
An illumination system including a light source, light guides coupled to the light source, each including an input surface and an output surface, emissive material positioned to receive light from at least one light guide, and a first interference reflector positioned between the emissive material and the output surfaces of the light guides is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The first interference reflector substantially transmits light having the first optical characteristic and substantially reflects light having the second optical characteristic.
摘要:
The present invention includes interactive communication systems that incorporate several beneficial embodiments including an interactive tray system, an electronic presentation messaging system, an interactive podium, and a key drive system. The interactive tray system enables a single, transferable interactive unit to be fastened to a communication medium, turning into a fully interactive medium. The electronic presentation messaging system enables the e-mailing of presentations and notes to and from components of the interactive communication system. The interactive podium increases conventional podium mobility, enabling both the presenter, and podium, to move and be moved about the room without attention to wired connections. The key drive system replaces the conventional Y-connector of the key drive technology by effectively integrating the key drive in the device, thus only having one connector, and eliminating the need to change connectors from the key drive, to the USB connector, upon software driver loading.
摘要:
A battery pack for a cordless power tool and a cordless power tool and battery pack combination includes the battery pack having a retention member that pivotally engages a retention member of the power tool and a latch system in which one of the battery pack and power tool has a ball and the other of the power tool and battery pack has a latch that engages the ball.
摘要:
A battery powered oscillator in a freely movable pointer drives a coil and a divider. A grid of spaced conductors in a base unit is inductively coupled to the coil. A conductive plate that lies parallel to the conductor grid capacitively couples the signal from the divider to a phase locked loop to provide a reference signal that has a constant phase in relation to the oscillator. Detection circuitry uses the signals induced in selected grid conductors and the phase reference signal to determine the location of the pointer relative to the conductors. As an alternative to the phase locked loop, the signal induced in an idle reference conductor can be combined with the capacitively coupled reference signal to aid in demodulating the induced signals. As an alternative to an oscillator in the pointer, the coil may be driven by a signal capacitively coupled from the base unit.
摘要:
Methods and systems are discussed for determining venous oxygen saturation by calculating a ratio of ratios from respiration-induced baseline modulations. A calculated venous ratio of ratios may be compared with a look-up table value to estimate venous oxygen saturation. A calculated venous ratio of ratios is compared with an arterial ratio of ratios to determine whether baseline modulations are the result of a subject's respiration or movement. Such a determination is also made by deriving a venous ratio of ratios using a transform technique, such as a continuous wavelet transform. Derived venous and arterial saturation values are used to non-invasively determine a cardiac output of the subject.