424results about How to "Small and portable" patented technology

A firearm laser training system of the present invention includes a target having a plurality of zones, a laser transmitter assembly for projecting a laser beam, a sensing device and a processor. The sensing device scans the target to produce target images to detect laser beam or simulated projectile impact locations. The processor receives impact location information from the sensing device and processes the received information to evaluate user performance and to display evaluation information and an image of the target including indicia corresponding to the detected impact locations.

Systems and methods are disclosed for performing hemodialysis that include fluid handling systems that provide accurate control over the type and level of hemodialysis being performed. The system includes a first pump for pumping dialysate into a dialyzer and a second pump for pumping dialysate out of the dialyzer. The system also includes a third pump that provides improved control of a level of ultrafiltration, hemodiafiltration, or both.

A system and method for producing a binaural and localized audio signal to a user is provided. A signal processing method is provided for delivering spatialized sound in various ways using highly optimized inverse filters to deliver narrow localized beams of sound from the included speaker array. The inventive method can be used to provide private listening areas in a public space and provide spatialization of source material for a single user to create a virtual surround sound effect. In a binaural mode, a speaker array provides two targeted beams aimed towards the primary user's ears—one discrete beam for the left ear and one discrete beam for the right ear. In a privacy mode, a privacy zone could be created in which a primary audio beam would deliver a signal of interest to the user while secondary beams would be aimed at different angles to provide a masking noise.

An ultrasound imaging system includes a catheter-based ultrasound transducer, an external ultrasound transducer and a compact ultrasound unit including an isolation circuit, an ultrasound signal generator, and a beam former within a single unit. The ultrasound unit may include circuitry and software to enable simultaneous imaging by both transducers. The isolation circuit may limit unintended, leakage current from the ultrasound system through the transducer array of the ultrasound system.

The presented cell phone-enabled doll companion allows a child novel ways to self-select and self-execute applications while requiring no intervention or supervision from the parent. Further, it provides learning, entertainment and safety by integrating cell phone communication, education, entertainment, alert and monitoring systems. While providing a convenient means of communication between the child and parent, the system allows surveillance of a child's real-time environment, GPS monitoring and SIDS / health monitoring. The functionality and the physical elements of the system are programmable through installation of applications downloadable from an application store. Various options for parental access to a configuration interface to modify settings and download applications are provided, including via a cell phone, a website, customer service call center and / or the doll companion touch screen.

A vacuum cleaner comprises: a housing and a motor fan assembly mounted in the housing, the motor fan assembly arranged to generate an air flow. A removable dirt container is mountable on the housing and in fluid communication with a dirty air inlet and the motor fan assembly. A moveable dirt compactor is mounted in the dirt container and moveable between a stowed position and a dirt compacting position wherein the moveable dirt compactor is closer to one end of the dirt container in the dirt compacting position than in the stowed position. Wherein the dirt container comprises a primary handle for actuating the moveable dirt compactor with a first hand and a first auxiliary handle for allowing the user to grip with a second hand.

An improved insufflation-exsufflation system with percussive assist for removal of broncho-pulmonary secretions includes a conduit for connection to a patient's airway; a pressure source for providing to the conduit alternating positive and negative pressure fluctuations at a first rate corresponding to patient insufflation-exsufflation; and a control mechanism for varying pressure during positive and negative pressure fluctuations at a second higher rate to periodically decrease the positive pressure during positive fluctuations and decrease the negative pressure during negative fluctuations to provide percussive pulses during at least one of insufflation-exsufflation to clear broncho-pulmonary secretions from the patient's airway.

The invention provides a synchronous display method and device of images. Compression treatment is carried out through periodically capturing screen contents; the transmission capability can be realized at any time; the transmission effect is improved; and the transmission time can be shortened. The captured image contents can be quickly compared according to the feature values analyzed in the image compression process; the images are judged intelligently synchronously; the images are transmitted automatically synchronously without manual operation; the screen contents are prevented from being transmitted repeatedly; the storage pressure of a student user terminal is relieved; comprehensiveness of the contents is ensured; the screen image contents are marked and judged, the review efficiency of a student is improved, when the student reviews, the student can directly view the last few pages of blackboard-writings.

The invention discloses a method for preparing synthetic gas through microwave pyrolysis and gasification of biomass. The method comprises the following steps: a biomass raw material sent to a bunker and a catalyst are introduced into a microwave pyrolysis reactor, and passes through a preheating zone, a pyrolysis zone, a gasification zone and a reforming zone in order for reactions of dehydration, cracking, gasification and reforming, the reformed product is performed with gas-solid separation, gas and a few of carried tar and coke are subjected to a cracking reaction in a gas lifting pipe again, synthetic gas is released from an outlet, and the coke and ash obtained by gas-solid separation can be discharged from a reactor. The method has the advantages of high biomass gasification rate and high carbon conversion rate, the obtained synthetic gas product has high quality, can satisfy synthesis requirement of a liquid fuel, and has good application prospect.

The dock with USB port is a compact and portable adapter. It has a substantially smaller form factor than the electronic device to be docked with it. The dock with USB port plugs into a USB port and provides an adjustable dock for an electronic device and a pass thru USB port that can be used by another electronic device. The dock with USB port comprises of a housing with a USB plug at one end and a USB port at the other end. A plug that extends from a small flange is provided in a concavity, which angles toward the USB plug, on a side of the housing. An adjustable support is provided adjacent to the concavity to support an electronic device.

The present invention is a method of and an apparatus for measuring resistances of at least one transformer winding (109) in configurations of connected transformers windings. The method is based on increasing driving power from the source of electrical energy (12, 102) until the current reaches a predetermined level, which is below the core saturation current level of the measured transformer or the measuring device current limit, and then controls the power of the source of the electrical energy to maintain predetermined current flowing through the at least one winding over a time period sufficient to cause a L di / dt contribution to a voltage drop across the at least one winding to decrease below a threshold level. The apparatus measures simultaneously the constant current flowing in the at least one winding and the voltage drop over the at least one winding after the predetermined time period has elapsed. The resistance of the at least one winding is calculated from the voltage drop over the at least one winding and the current flowing in the at least one winding.

A method and system of projecting light on a planar surface to produce an image for tracing is disclosed. The system includes a projector that has a light source and a signal conditioner that is operably connected to the projector. A computer is operably connected to the signal conditioner. A scanner is connected to the projector. A test pattern from the computer is projected from the projector through the scanners to visually align an image to a sector on a work surface. A grid is operably aligned with the work surface. A geometric pattern from the computer is then projected by the projector on the planar work surface for tracing. The method comprises the steps of creating a pattern, tracing lines along the pattern on the planar work surface, cutting the pattern along the traced lines, discarding pieces of the planar surface outside the pattern, and placing edging along an outer edge of the pattern.

The present invention relates to a broadband radar target simulation method and system, characterized in that: the received radar radiation signal enters the broadband down-converter of the simulation system through an attenuator and a low-noise amplifier to perform conversion from radio frequency to intermediate frequency, and the down-conversion output IF 70MHz band-pass signal, 70MHz IF modulation signal is low-pass filtered and then band-pass samples the input analog modulation signal, and the output digital data is digitally down-converted in the FPGA, demodulated to the digital baseband signal and delayed; the delayed The data is output to the IQ data processing circuit of the FPGA, and finally the target simulation in the microwave frequency band is radiated to the radar through the signal output by the DAC. The invention adopts space coherent reception, which can fully meet the requirements of radar far-field testing.

A device and method for raising sunken objects such as crates, small boats, vessels and ships including a platform equipped with winches to lower down a basket net and a frame supporting a cryogenic apparatus to the vicinity of the object. The cryogenic apparatus is adapted to pump surrounding water through a freezing unit to reduce its temperature to below freezing and then form a stream of overcooled water directed over the sunken object to form a layer of ice about it. The basket net contains provisions to allow its closure under the object once it is lifted off the sea floor. Once enough ice is formed, the object is lifted to the surface. On average, the capacity of the cryogenic apparatus is such that a 1 ton object can be lifted in about 3 hours. Remote monitoring and control means are provided for the operator to observe and direct the operation of the device. The device is especially advantageous in dealing with explosive objects such as old and unwanted sea mines, torpedoes and alike.

An ultrasonic inspection apparatus includes an ultrasonic probe including an ultrasonic transducer, a position detection device, a drive element selector which is connected to the plurality of piezoelectric elements of the ultrasonic transducer provided so as to select a required piezoelectric element, a signal detection circuit which allows the piezoelectric element selected by the drive element selector to transmit ultrasonic wave to an inspection object through an acoustic transmission medium, which receives reflection echo thereof, and which detects an electric signal of the reflection echo through, a signal processor which generates three-dimensional imaging data inside of the inspection object by processing the electric signal of the detected reflection echo, a position converting circuit which outputs an imaging-start trigger signal to a signal generator in response to a position detection signal, and a display device which displays an imaging result.

The invention discloses a multichannel electrical stimulation device based on myoelectricity feedback, and relates to the field of medical instruments. The device comprises a myoelectricity signal collection / electrical stimulation output instrument, an upper computer, and a signal collection / output part. The myoelectricity signal collection / electrical stimulation output instrument is in communication connection with the upper computer, and the myoelectricity signal collection / electrical stimulation output instrument and the signal collection / output part are connected with each other through a wire. The signal collection / output part is connected to a human body. The device integrates the myoelectricity diagnosis and the electrical stimulation treatment to form closed-loop control, so as to achieve the sharing of a myoelectricity diagnosis and electrical stimulation electrode in different time periods. The device is high in cooperation degree, is good in compatibility, is portable and is easy to use. The device achieves the purposes of clinical active rehabilitation, precise positioning and diagnosis and targeting simulation treatment.

The embodiment of the invention discloses a method for realizing access control, which comprises: establishing PTT connected with a terminal, receiving data packet carrying access control removal request and current geological position information of the terminal from the terminal, acquiring user identification number of the terminal, performing verification according to the user identification number to determine if the terminal is a registered terminal, resolving the data packet carrying the current geological position information of the terminal to obtain the current geological position information of the terminal, judging if the current geological position of the terminal has the right to remove the access control, and removing the access control corresponding to the current geological position for the terminal. The invention also discloses an access control device, the terminal, an assess control system. The invention has the advantages that: an assess control removal request is sent in a PTT mode; the removal of the access control is controlled according to the access control right of the terminal; users do not need to carrier extra cards; and the use by the users is convenient.

This invention relates to a compact cavity ring down spectrometer for detection and measurement of trace species in a sample gas using a tunable solid-state continuous-wave mid-infrared PPLN OPO laser or a tunable low-power solid-state continuous wave near-infrared diode laser with an algorithm for reducing the periodic noise in the voltage decay signal which subjects the data to cluster analysis or by averaging of the interquartile range of the data.

The invention discloses a simple, fast and sensitive method for detecting a plasticizer (phthalate ester) in plastic, which is based on ion mobility spectrometry and detects phthalate ester in an extracting solution using a fast ion mobility spectrometry detector in combination with a simple organic solvent extraction pretreatment method. The measurement method is simple, fast and reliable. The analysis time of the method is only 0.5min, the requirement on a sample pretreatment is low, the detection time is short, the sensitivity is high, and the detection limit can be up to 1ppb.

The invention provides a portable copper ion concentration detection method based on click chemistry and belongs to the field of analytical chemistry. Under the condition that sodium ascorbate reduces cupric into cuprous as a catalyst, a 1,3-dipole cycloaddition reaction is carried out between NDA modified with an azide group and DNA modified with an alkynyl group, so that DNA modified with cane sugar invertase is fixed on magnetic beads; The magnetic beads are separated from a solution, the cleaned magnetic beads are dissolved into a cane sugar solution to carry out enzymatic hydrolysis, and then a reaction solution after enzymatic hydrolysis is measured by adopting a blood glucose meter, so that copper ion concentration can be detected. The portable copper ion concentration detection method provided by the invention takes the blood glucose meter as a platform and can portably and quickly detect the copper ion concentration on site; and the portable copper ion concentration detection method can be applied to copper ion detection in a human body serum sample, and the portable copper ion concentration detection method has the advantages of easy operation, low cost, high sensitivity and good specificity.

The present invention relates, generally, to a portable system for UV spectroscopy capable of the detection and quantification of chemicals from either open air environments or by insertion of a sample using a sample chamber. The system is capable of simultaneously detecting and quantifying chemicals in either a gaseous or liquid form with both sharp and broad spectroscopic features. UV light is generated, collimated into a beam, and focused through a sample volume. The volume can be comprised of an open environment system, or a closed system with a sample cell. The sample cell may contain a number of mirrors which results in one or more “bounces” of light through the volume prior to being focused into a UV Spectrometer. The said light source may be supplied by a variety of sources. Said light is collected and transferred to the processor by short length optical fibers thereby minimizing the light loss in the deep UV.