1892 results about "Signal monitoring" patented technology

Preferred embodiments of the invention employ a portable and wearable EEG monitoring device having a patient-worn amplifier releasably coupled to a host computer for transmitting EEG signals. When patient disconnection from the host computer is desired, a portable operations device (POD) can be connected to the amplifier. Preferably upon detecting disconnection, a controller causes new EEG signals to be routed to a removable memory or transmitter peripheral card, enabling seamless data acquisition. Upon detecting reconnection between the amplifier and the host computer, the controller causes new EEG signals to be routed to the host computer. The controller also preferably transmits EEG signals stored on the peripheral memory card (if used) to the host computer. Preferred embodiments include a handheld display apparatus for viewing EEG signals and electrode information. Also, preferred embodiments reduce patient tethers by connecting multiple amplifiers in a daisy-chain format (most preferably on a PAN bus).

Hat, helmet, and other headgear apparatus includes dry electrophysiological electrodes and, optionally, other physiological and / or environmental sensors to measure signals such as ECG from the head of a subject. Methods of use of such apparatus to provide fitness, health, or other measured or derived, estimated, or predicted metrics are also disclosed.

The invention discloses a wrist-type vital sign monitoring device and a monitoring method thereof. A central processing unit, a human-computer interaction module, a communication module, a positioning module, a signal processing module and a vital sign collecting detector set are integrated in a wrist-type watch, and the wrist-type watch is worn on a wrist through a watchband. The vital sign collecting detector set comprises a plurality of physiological index sensors, and each physiological index sensor is arranged in the wrist-type watch in an integrated or detachably replaced mode. The portable device which has a positioning function and can monitor the physiological signal monitoring value of a user in real time is contrasted with pre-stored normal index parameters aiming at the user, and when a disease sign is found, the device sends out a prompt for the user and meanwhile sends the current related physiological signal monitoring values of the user, the physiological signal monitoring values in the recent period and the current geographical location information of the user to a service center, so that the precious time is earned for the user obtaining the timely salvation.

A disk drive is disclosed comprising a disk having top and bottom surfaces, and top and bottom heads actuated over the top and bottom surfaces, respectively. Control circuitry detects a warping of the disk by writing a first test pattern to the top surface, reading the first test pattern to generate a first read signal, monitoring a first read signal value proportional to an amplitude of the first read signal, writing a second test pattern to the bottom surface, reading the second test pattern to generate a second read signal, monitoring a second read signal value proportional to an amplitude of the second read signal, and processing the first and second read signal values to detect a negative correlation between the amplitudes of the first and second read signals.

An apparatus for monitoring speaker cone displacement in an audio speaker includes: (a) an electromagnetic coil structure; (b) a ferrous core structure; the ferrous core structure and the electromagnetic coil structure being mounted with the speaker to effect variable electromagnetic coupling between the ferrous core structure and the electromagnetic coil structure as the speaker cone moves; (c) a signal injecting circuit coupled with the electromagnetic coil structure for injecting a predetermined input signal into the electromagnetic coil structure; and (d) a signal monitoring circuit coupled with the electromagnetic coil structure; the signal monitoring circuit receiving an output signal from the electromagnetic coil structure and generating an indicating signal based upon the output signal; at least one signal characteristic of the indicating signal being related with the cone displacement.

A mobile communication device includes, in part, a cellular communication module, a first antenna adapted to receive and transmit data between the mobile communication module and a cellular network, a Wireless Fidelity (Wi-Fi) communication module, a second antenna adapted to receive and transmit data between the Wi-Fi communication module and a VoIP network, a signal monitoring circuit, and a switching circuit adapted to switch an existing communication from the cellular communication module to the Wi-Fi communication module or vice versa.

In a signal receiving apparatus as, for example, that used in the monitoring in a stolen vehicle transceiver of the presence of sequential transmitted signals specifically requesting that transceiver to respond to enable tracking the vehicle, wherein the receiver is powered by a consumable energy source of predetermined budgeted lifetime and adapted to operate between quiescent energy-saving and energized energy-consuming states for performing such sequential signal monitoring, desired signal identifying and related functions, a method of and apparatus for insuring the availability of energy to be able to perform such functions within said predetermined budgeted life time, that comprises, allocating budget time intervals for periodically operating the receiver intermittently in energized state to enable the performing of such functions as monitoring for such signals; and, in the event of inordinate energy consumption during such operation, that, if continued, would render the operation out of overall allocated time budget, adaptively skipping time intervals with the receiver quiescent, sufficiently to get the operation back on overall time budget.

Method and apparatus for detecting possible interference in a neurological signal received from a monitoring element of a medical device system. The monitoring element monitors a condition or a symptom of a nervous system disorder being treated and provides a neurological signal to the medical device system for purposes of providing closed-loop feedback control. The system analyzes various parameters of the received signal by taking instantaneous measurements of data points in moving window and thereby determining whether the signal is of poor quality. If the signal is of determined poor quality, it is removed from consideration in the closed-loop feedback control system until it is determined that the signal quality has sufficiently been restored.

A wireless modular, multi-modal, multi-node patch platform is described. The platform preferably comprises low-cost semi-disposable patch design aiming at unobtrusive ambulatory monitoring of multiple physiological parameters. Owing to its modular design it can be interfaced with various low-power RF communication and data storage technologies, while the data fusion of multi-modal and multi-node features facilitates measurement of several bio-signals from multiple on-body locations for robust feature extraction. Exemplary results of the patch platform are presented which illustrate the capability to extract respiration rate from three different independent metrics, which combined together can give a more robust estimate of the actual respiratory rate.

A system for monitoring reverse paths of a bi-directional cable communication network such as a CATV network, to detect and analyze ingress signals entering a reverse path and ending at a network sub-headend or headend through a corresponding one of communication lines, comprises a plurality of radio frequency signal detectors connected thereto. The radio frequency signal detectors are provided with bandpass filter for receiving a radio frequency signal within the frequency band used, to generate corresponding output signals indicative of the strength of the received radio frequency signal. The output signal generated by the frequency signal detector which is coupled to the communication line corresponding to the ingress signal carrying path is indicative of the strength of the received ingress signal with received reverse signals. The system further comprises a signal processor for analyzing the detector output signals through comparison with one or more predetermined ingress thresholds to generate an alarm signal whenever the ingress signal is detected. The system further comprises a control computer receiving the alarm signal to generate monitoring sequence control data indicative of the communication line corresponding to the ingress signal carrying path to be monitored. The system also comprises a selector switch having a plurality of inputs being connected to the communication lines and being responsive to the monitoring sequence control data to select the input connected to the communication line to be monitored, and signal monitoring instrumentation such as a spectrum analyzer and a broadband analyzer coupled to an output of the switching device and being responsive to the monitoring sequence control data for analyzing the ingress signal and generating alarm message data accordingly. The control computer receives the alarm message data to further generate diagnostic sequence control data for the monitoring instrumentation also used to determine source characteristics of the ingress signal.

A system and method are disclosed for utilizing a single integrated EP / ablation catheter to treat cardiac arrhythmias. The disclosed catheter combines the EP signal monitoring of a traditional EP diagnostic catheter, and optical energy for the ablation therapy, which is expected to provide a more efficient, accurate and reliable method of cardiac ablation than current RF techniques since it is based on real-time EP signal mapping, with precise pathological tissue localization, cardiac arrhythmia severity characterization and delivers predictable energy doses with continuous safety monitoring of the intracardiac signals.

The invention discloses a human body information monitoring and processing system and a human body information monitoring and processing method. The system comprises a human body information monitor, a cloud computing data interaction center, a motion wristwatch and a user terminal, wherein the human body information monitor is used for monitoring physiological and unphysiological signals of moving human bodies in real time in a multi-mode and multi-channel mode and transmitting signal data to the cloud computing data interaction center; the cloud computing data interaction center is used for analyzing the received signal data and transmitting the analyzed result data to the motion wristwatch and the user terminal respectively; the motion wristwatch is used for making a motion plan according to the received result data and performing warning prompt or adjusting the made motion plan in real time; and the user terminal is used for displaying the received result data so as to realize human-machine interaction. By the system and the method, the comfort degree of motion signal monitoring equipment and the accuracy of monitoring are improved, the motion plan is made for the human bodies through the monitored physiological and unphysiological signals and network on-line expert consultation is provided for the human bodies to trace body health conditions.

An electronic control unit has a microcomputer and a signal monitoring circuit. When a brake pedal is pressed down and an analog signal from a brake pedal sensor is changed in a low power consumption operation mode of the microcomputer, the signal monitoring circuit operates cyclically, When the signal monitoring circuit starts the operation, a capacitor is charged with a constant current for only a charging time stored in a memory. When a comparator detects that the analog signal is lower than the charge voltage of the capacitor, a wakeup signal is output from the comparator to the microcomputer to cause the microcomputer to operate in the normal operation mode. The charging time is pre-stored in a memory of the microcomputer.

Monitoring an optical signal comprises sampling the optical signal from two or more distinct tap points to retrieve a sample set. Multiple such sample sets are obtained over time. A joint probability distribution or phase portrait of the sample sets is assessed for indications of optical signal quality. The tap distinction can be polarisation, for example to determine OSNR, or frequency. The tap distinction can be a time delay, which can enable diagnostic differentiation between multiple impairments, such as OSNR, dispersion, PMD, jitter, Q, and the like. Machine learning algorithms are particularly suitable for such diagnosis, particularly when provided a two dimensional histogram of sample density in the phase portrait.

A skew correction system incorporated into a transmitter forwarding a differential signal on a differential lane monitors returning signal reflections when the receiving end of the differential lane is appropriately terminated. Based on an analysis of the reflections, the skew correction system adjusts the relative timing of complementary edges of the differential signal departing the transmitter so as to substantially eliminate skew at the receiving end of the differential lane.

The present invention provides an optical networking device for re-amplifying, re-shaping, and re-timing an optical signal, as well as providing distortion compensation and performance monitoring of the optical signal. The optical networking device includes an all-optical regenerator device for one or more of re-amplifying, re-shaping, and re-timing the optical signal; a distortion compensator device for compensating for distortion associated with the optical signal; and a quality-of-signal monitoring device for measuring the quality of the optical signal. Preferably, the all-optical regenerator device, the distortion compensator device, and the quality-of-signal monitoring device are disposed within a single module. The quality-of-signal monitoring device measures the optical signal subsequent to distortion compensation. Alternatively, the quality-of-signal monitoring device measures the optical signal subsequent to distortion compensation and all-optical regeneration. In various embodiments, the quality-of-signal monitoring device provides feedback to the distortion compensator device, a distortion compensator device disposed along a line system, one or more of an optical amplifier and a distortion compensator device disposed along the line system, and a transmitter device disposed along the line system.

The invention relates to an emotion regulating device and a method thereof. The device comprises a physiological signal acquisition module, a physiological signal processing module, a central processing module, a music playing module and the like, wherein, the physiological signal acquisition module is used for acquiring a physiological signal and transmitting the physiological signal to the physiological signal processing module to be processed; the physiological signal processing module transmits a processing result to the central processing module to be analyzed and calculated; and the central processing module mobilizes the music playing module to play corresponding music according to an analysis result. The emotion regulating device effectively and reasonably combines physiological signal monitoring of human body with musicotherapy, calculates to obtain physiological parameters so as to determine an emotion regulating scheme by collecting the physiological signal of the human body, and selects a specific music file to play so that a user can regulate self emotion by listening music. The emotion regulating device stores and records the collected physiological signal and the physiological parameters of the human body and can monitor the physiological parameters of the human body of the user for a long term.

The present invention relates to a method for on-line monitoring the vibration and noise of the alternating-current power transformer which is affected by the direct-current magnetic biasing, and the method belongs to the electric power safety monitoring technique in the electric field, and the method comprises the following steps: when the direct-current magnetic biasing does not exist collecting the noise acoustic pressure signal of the noise sound pressure meter at the transformer position to confirm the vibration signal monitoring point, and recording the principal character data of vibration of transformer body when no direct-current magnetic biasing exists at the monitoring point; when the direct-current magnetic biasing state appears executing on-line monitoring according to the sampling interval, sampling frequency and monitoring period, and setting the monitoring threshold value of the maximum vibration amplitude; after each monitoring period analyzing the preserved raw data, when the early warning state appears steadily for more than one day continuously, the transformer body is needed to be further detected, otherwise, the operation state of the transformer is taken for excellent; the invention can realize the judgment to the vibration state of the transformer at the state of direct-current magnetic biasing and guarantee the safe and stable operation of the power transformer through long-period on-line monitoring.

The present invention relates to a device and a method for extracting physiological information from remotely detected electromagnetic radiation emitted or reflected by a subject. A data stream derivable from electromagnetic radiation emitted or reflected by a subject is received. The data stream comprises a sequence of signal samples indicative of desired subject motion and of disturbing motion. The signal samples represent at least one region of interest exhibiting an at least partially periodic indicative motion pattern attributable to at least one physiological parameter, and a non-indicative motion region. The sequence of signal samples is processed, comprising deriving a sequence of derivative motion compensated samples at least partially compensated for undesired overall motion; detecting an evaluation parameter representative of motion compensation accuracy; and deriving at least one characteristic signal at least partially indicative of the at least partially periodic indicative motion pattern from the sequence of motion compensated samples, wherein deriving the characteristic signal is performed depending on the detected evaluation parameter.

The invention relates to a satellite universal automatic testing platform and a data interaction method thereof, aims to solve the technical problem that existing satellite test equipment has poor universality and a low automation degree, and belongs to the technical field of satellite testing. The satellite universal automatic testing platform provided by the invention consists of a peripheral equipment layer, an intermediate service layer and a user terminal layer, wherein the peripheral equipment layer comprises measurement and control system automatic testing equipment, control system automatic testing equipment, CAN (Controller Area Network) monitoring equipment, plug-failure signal monitoring equipment and solar cell array simulating equipment, and is used for making a response to aremote control command of a comprehensive testing server, uploading the remote control command to a satellite, finishing signal collection of the satellite data simultaneously, transmitting a collected signal to the comprehensive testing server to perform signal processing and data storage. According to the testing platform and a data interaction way thereof, the rapid testing demand at each stageof the satellite is met; a system of satellite distribution test control and comprehensive integration management is formed, and universal and automatic satellite testing is realized. The satellite universal automatic testing platform has the advantages of high universality and high automation degree.

A remote medical device programming system and method are provided for monitoring a communication signal during a remote programming procedure and generating a communication status signal for presentation on a display. The communication signal monitoring may include monitoring a communication link bandwidth on a communication network linking a remote programmer to a central programmer. The communication signal monitoring may also include monitoring a telemetry signal strength between the remote programmer and the medical device being programmed. The system and method further provide a fail-safe response to a communication status signal that does not meet predetermined safety criteria.

A remote medical device programming system and method are provided for monitoring a communication signal during a remote programming procedure and generating a communication status signal for presentation on a display. The communication signal monitoring may include monitoring a communication link bandwidth on a communication network linking a remote programmer to a central programmer. The communication signal monitoring may also include monitoring a telemetry signal strength between the remote programmer and the medical device being programmed. The system and method further provide a fail-safe response to a communication status signal that does not meet predetermined safety criteria.

Embodiments connect a call in which at least one party is a VoIP call party and monitoring resulting VoIP signals for unauthorized call activity, such as three-way call activity. The monitoring may include monitoring the call for suspend and / or resume events to detect the unauthorized call activity, the suspend and resume events may be generated by a telephone system and passed into a VoIP system associated with the VoIP call party. The monitoring may be carried out by an agent disposed between a VoIP gateway and the VoIP call party or by the VoIP gateway itself.

The invention discloses a mining analyzing and fault diagnosis system of rail transit monitoring data, and relates to the technical field of railway signals. The system comprises a signal monitoring system data processing unit, a data analyzing unit, a knowledge base unit and a fault diagnosis unit, wherein the signal monitoring system data processing unit is used for acquiring history railway signal monitoring data and real-time railway signal monitoring data from an on-site centralized signaling monitoring (CSM) device in each electric service workshop or work area. The data analyzing unit is used for analyzing the history railway signal monitoring data acquired by the signal monitoring system data processing unit, and generating fault diagnosis rules. The knowledge base unit is used for storing judging standards, and storing the fault diagnosis rules of the data analyzing unit, wherein the judging standards are formulated according to the work principle of each railway signal device and national and industry standards and specifications in the railway signal field and are used for fault diagnosis. The fault diagnosis unit is used for generating fault diagnosis results according to the fault diagnosis rules and the judging standards as for the real-time railway signal monitoring data acquired by the signal monitoring system data processing unit.

The invention discloses a stand-by safety chain monitoring and protecting device for a wind power generation control system, comprising a power supply, a cable-twisting switch, an engine-room vibration protection switch, a grid protection switch, a converter protection switch, an engine room and tower support emergent stop button, a distributed heartbeat signal monitoring switch, a rotary speed protection switch and a safety chain relay, wherein the power supply generates power signals and is respectively connected in series with the cable-twisting switch, the engine-room vibration protection switch, the grid protection switch, the converter protection switch, the engine room and the tower support emergent stop button, the distributed heartbeat signal monitoring switch, the rotary speed protection switch and the safety chain relay. The monitoring and protecting device adopts an active safety design, runs independent of a PLC system and monitors relevant signals at real time; and when incidents endangering the safety of a machine set occur, the monitoring and protecting device actively controls a pitch system to realize full feathering, thereby achieving the safe shut-down of the machine set.

A portable wireless transceiver (104) includes a receiver (206) for monitoring transmissions from neighboring transceivers (106A and 106B) to select a transceiver to use for communications. The portable wireless transceiver (104) further has a motion detector (204) for determining whether or not the portable wireless transceiver (104) is moving. If the portable wireless transceiver (104) is determined to not be moving, a processor (202) alters a schedule for monitoring of neighboring transceivers (106A and 106B) so that the monitoring is performed less frequently, thereby reducing power consumption by the portable wireless transceiver (104).