275 results about "Cardiac rate" patented technology

An abnormally rapid ventricular cardiac rate that results from atrial fibrillation can be reduced by stimulating a vagal nerve of the heart. An apparatus for such stimulation includes a power transmitter that emits a radio frequency signal. A stimulator, implanted in a blood vessel adjacent the vagal nerve, has a pair of electrodes and an electrical circuit thereon. The electrical circuit receives the radio frequency signal and derives an electrical voltage from the energy of that signal. The electrical voltage is applied in the form of pulses to the pair of electrodes, thereby stimulating the vagal nerve. The pattern of that stimulating pulses can be varied in response to characteristics of the atrial fibrillation or the ventricular contractions.

Pacing systems are disclosed including detectors for detecting the presence of electromagnetic interference and setting an interference state pacing mode and pacing rate. The interference state pacing mode and pacing rate are altered as a function of patient pacemaker dependency and the prevailing mean heart rate. When pacemaker dependency exists, the pacing rate is maintained and even increased from the prevailing mean heart for the duration of the interference state. When the patient is determined to not be pacemaker dependent, pacing is inhibited or suspended for the duration of the interference state.

A system and method are disclosed for identifying monitoring and evaluating hazardous or potentially hazardous conditions. The system-may-be worn-by safety personnel to detect equipment conditions such as low power supply, environmental conditions such as ambient temperature and / or physiological conditions such as heart rate of a wearer. The system may further include a control unit having electronics operable to communicate signals associated with equipment, environmental and physiological conditions.

A system and method for calculating an engagement value by quantifying an amount that a user is acting without thinking considering brainwaves and a heart rate can be used to compare media based on an individual or a group of individuals. Events of the media can be contrasted and compared by the engagement value as well. Statistical measurements may be taken to improve media.

A system and method for detecting and classifying cardiac arrhythmias based on cardiac pressure signals or the combination of cardiac electrical and cardiac pressure signals. A cardiac electrogram signal is sensed to derive a cardiac rate from which an arrhythmia detection is made when the cardiac rate meets arrhythmia detection criteria. An intracardiac pressure signal is sensed to derive an indicator of tachycardia based on an analysis of the pressure signal in either the time domain or frequency domain. The detected arrhythmia is classified as tachycardia or fibrillation based on the tachycardia indicator wherein the tachycardia indicator is compared to tachycardia detection criteria and the arrhythmia is classified as tachycardia if tachycardia detection criteria are met and the arrhythmia is classified as fibrillation if the tachycardia detection criteria are not met.

A system (10) for achieving a desired cardiac rate and cardiac rhythm in response to atrial fibrillation in a heart includes an atrial fibrillation (AF) detector (40) for detecting AF. The system also includes an atrioventricular node vagal stimulator (AVN-VS) (30) for stimulating vagal nerves associated with an atrioventricular (AV) node of the heart. The system further includes an on-demand pace maker (40) for providing ventricular pacing stimulation to the heart. A control unit (20) is operatively connected with the AF detection device, the AVN-VS device, and the on-demand pacing device. The control unit is responsive to AF detection by the AF detector to cause the AVN-VS to stimulate the vagal nerves to help reduce the ventricular rate of the heart. The control unit is further responsive to AF detection by the AF detector to cause the on-demand pace maker to help regulate the ventricular rate of the heart.

An improved sensor (102) for hydration monitoring in mobile devices, wearables, security, illumination, photography, and other devices and systems uses an optional phosphor-coated broadband white LED (103) to produce broadband light (114), which is then transmitted along with any ambient light to target (125) such as the ear, face, or wrist of a living subject. Some of the scattered light returning from the target to detector (141) is passed through a narrowband spectral filter set (155) to produce multiple detector regions, each sensitive to a different waveband wavelength range, and the detected light is spectrally analyzed to determine a measure of hydration, such as fluid losses, fluid ingested, fluid balance, or rate of fluid loss, in part based on a noninvasive measure of components of the bloodstream. In one example, variations in components of the bloodstream over time such as hemoglobin and water are determined based on the detected light, and the measure of hydration is then determined based on the in components of the bloodstream over time. In the absence of the LED light, ambient light may be sufficient illumination for analysis. The same sensor can provide identifying features of type or status of a tissue target, such as heart rate or heart rate variability, respiratory status, or even confirmation that the tissue is alive. Hydration monitoring systems incorporating the sensor, as well as methods, are also disclosed.

An improved pacemaker has a hysteresis feature that activates accelerated pacing during periods of sinus arrest and / or extreme bradycardia. When the patient's intrinsic heart rate drops below a hysteresis rate, the pacemaker reverts to a programmable accelerated rate or to the average cardiac rate. Accelerated pacing is delivered for a programmable period of time, after which the pacing rate is gradually reduced toward a lower rate. If a desirable intrinsic rate is not attained after the pacing rate is reduced to the lower rate, the intervention cycle repeats.

The invention provides an electricity-saving control method of a wearable intelligent device. The method includes the following steps that the wearable intelligent device is set to be in a real-time mode when a service App is started and a foreground works; the wearable intelligent device is set to be in a normal mode when the service App is stopped and a background works; in the real-time mode or the normal mode, the wearable intelligent device acquires current time and position information, and whether heart rate data are found or not is detected; when it is judged that the current time is in the preset sleeping time segment, the position information does not change and the received heart rate data are normal, the wearable intelligent device is automatically switched into a sleep electricity-saving mode; when it is judged that the current time is not in the preset sleeping time segment or the position information changes, the wearable intelligent device is automatically switched into the normal mode from the sleep electricity-saving mode. The invention further provides the wearable intelligent device. Through the method, the power consumption of the wearable intelligent device can be reduced, and the stand-by time can be effectively prolonged.

The invention discloses a multi-life monitoring system based on FMCW (frequency modulated continuous wave) wideband radar. The multi-life monitoring system comprises a transmitting unit, a receiving unit, a signal processing unit and a wireless signal transmitting unit; an FMCW signal is transmitted from the FMCW wideband radar to no less than one human object by virtue of the transmitting unit; a reflected echo signal is received by virtue of the receiving unit; the echo signal, which carries vital sign signals, is processed by virtue of the signal processing unit; the vital sign signals are demodulated and separated from the echo signal; and the vital sign signals are transmitted to a computer terminal by virtue of the wireless signal transmitting unit, so that respiration and heartbeat signals of detected persons are monitored under the condition of avoiding contact with the bodies of the detected persons. With the implementation of the multi-life monitoring system disclosed by the invention, under the circumstance of avoiding the contact of any electrodes and sensors with patients, the respiration and heart rates of the plurality of patients can be simultaneously monitored by a long time at a relatively long distance, so that the detected persons can feel more easily and comfortably; the multi-life monitoring system can be widely applied to clinical dynamic monitoring and sleep quality monitoring of patients with severe burn and the like; and meanwhile, the multi-life monitoring system can be also applied to researches in the field of psychology.

A system and apparatus implementing a graphical user interface for displaying heart rate information is provided. The graphical user interface displays, in a first viewing window, a first tracing indicative of a heart rate signal. The graphical user interface displays a control allowing a user to select a portion of the first tracing. In a second viewing window displayed simultaneously with the first viewing window, the graphical user interface displays a second tracing which is a zoomed in view of the selected portion of the first tracing. In a specific implementation, the control includes a selection box having a transparent portion superposed upon the first viewing window. The portion of the first tracing viewable through the transparent portion corresponds to the second tracing. The control allows the user to displace and modify the size of the selection box to select a portion of the first tracing.

The invention provides an intelligent terminal communication reminding method and an intelligent terminal communication reminding device. The intelligent terminal communication reminding method comprises the following steps: acquiring state data of a user through a wearable device, wherein the state data comprises heart rate information of the user and / or body movement state information of the user; according to the heart rate information of the user and / or the body movement state information of the user, judging whether the user is in a sleep state; according to the result of judging whether the user is in the sleep state, correspondingly controlling an intelligent terminal to perform communication reminding. Through control over a communication reminding way by detecting whether the user is in the sleep state, switching of a reminding state can be performed more timely and effectively, unnecessary disturbances are removed better, and missing of telephone answering or information reception is avoided.

A bi-point detection type heart-rate monitor is constructed to include two electrically conductive contact terminals for the touching of the two hands or feet of a person, an amplifier-filter circuit adapted to sample impedance signal between the contact terminals, to amplify the impulse of the sampled impedance signal, and to remove noises from the sampled impedance signal, a waveform converter adapted to rectify outputted waveform from the amplifier-filter circuit into a square wave, and a processing and output circuit adapted to receive and process the square wave signal outputted by the wave form converter, to obtain the mean frequency of peaks of the received square wave signal by means of a computing process, and to output the frequency value thus obtained to a display unit for display.

The invention relates to a remote health monitoring system based on a portable monitoring terminal with the wireless communication function, which consists of three parts: a portable monitoring terminal, a remote health monitoring website and a health consultant or a health expert, wherein the three parts form a complete personnel health remote monitoring information system through the Internet, the portable monitoring terminal is provided with health monitoring control program, a temperature sensor, a humidity sensor and an atmospheric pressure sensor are arranged in the portable monitoring terminal, the somatic sensing environment parameters beside personnel users are monitored at any time in any place and are uploaded to a remote health monitoring website database, the terminal is provided with an external miniature physiological data detector for detecting the blood oxygen, the cardiac rate and the body temperature, and the measuring results are uploaded to the website database to be used as the basis for the system to give health tips and proposals. The website receives the stores the somatic sensing data and the physiological measuring parameters updated by the user terminal, and gives the health instructions for terminal users, so people can conveniently obtain the systemic and continuous health monitoring.

Conventionally, when a biological information collecting device is used for measurement, an electrode is directly attached to a human body, accurate information cannot be collected and measurement through a lead wire is performed, for long time constraining the human body because of the lead wire. A device proposed to solve the problem comprises a capacitive sensor used for detecting a signal from the human body, and therefore the temperature characteristics are not good, bringing out a drawback that the signal varies in a low-frequency range. A biological information collecting device according to the invention comprises a closed pneumatic sound sensor having a gas-tight air bag made of soft rubber, plastic, or cloth or a cabinet made of metal, rubber, plastic, or wood. Biological information about the respiration, the cardiac rate (cardiac cycle), and the body movement due to, e.g. a cough or a snore is collected by a microphone of a pressure sensor to perform measurement without constraining the human body, thereby solving the problem of the conventional devices.

The invention discloses a BCG signal heart rate calculating method and system based on a dynamic second difference threshold. The method comprises the following steps of performing collecting to obtain BCG signals; according to a preset rule, performing filtering pretreatment on BCG signals to obtain filtered BCG signals; according to a dynamic second difference threshold algorithm, treating the filtered BCG signals, and determining the position of J wave peaks in each signal period to obtain the sequence of J wave peaks; according to the position of the each J wave peak in the sequence of theJ wave peaks, calculating the average length of BCG signal dominant waves; and according to the average length and the sampling rate, calculating the heart rate. The method and the system are high inalgorithm adaptability, and have good noise removing effects on different signals. The method and the system are simple in parameter structure, and low in calculation complexity, the problems that aconventional BCG signal extracting method is long in calculation time and large in delayed time, are solved, and the BCG signal heart rate calculating method and system have high calculation accuracyand are suitable for real-time monitoring of the heart rate.

A system (10) for achieving a desired cardiac rate and cardiac rhythm in response to atrial fibrillation in a heart includes an atrial fibrillation (AF) detector (40) for detecting AF. The system also includes an atrioventricular node vagal stimulator (AVN-VS) (30) for stimulating vagal nerves associated with an atrioventricular (AV) node of the heart. The system further includes an on-demand pace maker (40) for providing ventricular pacing stimulation to the heart. A control unit (20) is operatively connected with the AF detection device, the AVN-VS device, and the on-demand pacing device. The control unit is responsive to AF detection by the AF detector to cause the AVN-VS to stimulate the vagal nerves to help reduce the ventricular rate of the heart. The control unit is further responsive to AF detection by the AF detector to cause the on-demand pace maker to help regulate the ventricular rate of the heart.

A standard 3-lead electrcardiographic (ECG) monitoring system which is based on a wireless sensor network, comprising a management center, a patient monitor node, a sensor network node which is composed of a patient monitoring node and a collective node, and a digital processing terminal, wherein, the patient monitoring node communicates with the collective node; all the collective nodes communicate with each other; the collective node, the digital processing terminal and the management center communicate with each other. The patient monitoring node comprises a sensor input unit, a data processing unit, a data transmission unit and a power unit which are connected with each other in sequence; the data processing unit, the data transmission unit and the power unit are connected with the collective node. The invention combines the wireless sensor network and the ECG monitoring digitization, the disease rate can be predicted effectively by only carrying one monitoring patient node, which provides an important objective base for clinical analysis. The system achieves the combination of the standard 3-lead synchronous ECG, and variability of cardiac rate, etc., and can display a complete figure on which an identical cardiac cycle is on different orientations and different leads.

The invention discloses a real-time video emotion analysis method and system based on deep learning. The analysis method comprises the following steps of S1, obtaining a training data set; S2, recognizing microexpressions of the training data set through an algorithm based on a deep neural network, performing screening, and outputting 8 kinds of expression predicating values, wherein 8 kinds of expressions comprise a gentle expression, a happy expression, an amazed expression, a sad expression, an angry expression, a disgusted expression, a fear expression and a despised expression; S3, predicating shot human expressions through a heart rate algorithm, and obtaining corresponding heart rate values; and S4, comparing the heart rate values obtained in the step S3 with the expression predicating values obtained in the step S2, and outputting the expressions the same as the heart rate values obtained in the step S3. According to the real-time video emotion analysis method and system basedon deep learning disclosed by the invention, human face recognition in machine vision and an image classification algorithm are applied to detection of microexpressions and the heart rate, recognitionof the microexpressions is realized through the deep learning algorithm, and the real-time video emotion analysis method and system based on deep learning can be applied to the clinical field, the juridical field and the security field.

A fetal heart rate monitor (FHRM) (100) useful for locating fetal heartbeat (FHB) and monitoring the fetal heart rate, the FHRM comprising: at least one Doppler transducer (101); at least one processor (102); and, at least one communication module (103); the FHRM is operative in a method of (400): obtaining an FHRM comprising at least one Doppler transducer; at least one Doppler transducer comprises a high frequency mode and a low frequency mode (401); placing the Doppler transducer around the abdomen of an expectant mother (402); setting the Doppler transducer to the low frequency mode; the low frequency mode has a wide beam that facilitates the location of said FHB (403); moving the Doppler transducer past the abdomen until a location where said FHB signal is found (404); switching the Doppler transducer to the high frequency mode whilst keeping the Doppler transducer in the location for receiving an FHB signal; the high frequency has a narrow beam adapted for concentrating and receiving accurate fetal heart rate (FHR) readings resulting in improved signal to noise ratio (405); and detecting by means of said FHRM said FHB signals (406).

The invention discloses a village group epidemic prevention integrated platform based on an Internet-of-things architecture, which is characterized in that a gateway coordination node can receive state data acquired by terminal equipment and send the state data to a server, and the server can acquire real-time body temperature, heart rate, real-time position data and emergency distress signals ofeach village, judges whether the corresponding villager is abnormal according to the real-time temperature and heart rate, judging whether the corresponding villager is located in the village group management range according to the real-time position data, judging whether an emergency distress signal exists, and labeling the villager who is abnormal, is located outside the village group managementrange and / or generates the emergency distress signal; generating a village group epidemic situation epidemic prevention and control map containing the real-time state information of each village citizen; in this way, the client can remotely access the server through the browser to obtain the village group epidemic prevention and control map and perform remote parameter setting on the gateway coordination node so as to realize automatic acquisition, wireless transmission and remote monitoring of village group epidemic prevention and control information.

The invention discloses an LoRa wristband-based student campus positioning system, and belongs to the technical field of remote monitoring. The LoRa wristband-based student campus positioning system comprises a card reader, LoRa wristbands, an LoRa gateway, a cloud server, and a monitoring platform. The card reader senses and reads LoRa wristband information by emitting low-frequency radio waves.The LoRa wristbands collect students' characteristics of body temperature, life, and movement. The LoRa gateway is connected with a plurality of LoRa wristbands based on an LoRaWAN network and sends students entry and exit records, positioning information, heart rate, temperature, and movement data to the cloud server. The monitoring platform is connected with the cloud server through a data access layer and displays abnormal wristband information, such as students' high fever, lack of attendance and the like. A school manager sends a short message or email to corresponding students' head teachers based on the promotions and receives feedback from the students' head teachers. The LoRa wristband-based student campus positioning system solves problems of high power consumption, small monitoring range and single function of a traditional campus positioning system.

The invention relates to an electrocardiosignal-based sleep quality detection equipment and service thereof. The electrocardiosignal-based sleep quality detection equipment comprises an electrocardiosignal detection instrument, a control hoist machine and a display instrument which are electrically connected with one another, wherein a single-lead electrocardiosignal detection instrument is adopted as the electrocardiosignal detection instrument and is provided with a detection electrode which is arranged on a thoracic cavity of a target object; the display instrument is composed of four display panels which are independent from one another. According to the technical scheme adopted by the electrocardiosignal-based sleep quality detection equipment and the service thereof, by virtue of combination of a normal heart beat interval time sequence and a breathing information time sequence, typical noises in the breathing information are eliminated under the influence of a normal heart beat interval signal in a clinical process, so that relevant information between synchronous heart rate and pneodynamics can be effectively acquired by the normal heart beat interval time sequence and the breathing information time sequence, excessive detection indexes for patients are effectively reduced and inconvenience possibly brought to the patients in a detection process is effectively avoided.

The invention discloses an IPPG-based human body vital sign perception system, belonging to the technical field of physiological parameter detection. The objective of the invention is to solve the problems that conventional physiological parameter detection means need to be in direct contact with the skin of a detected person, are not applicable to burned and scalded patients or newborns, easily cause discomfort of subjects after long-time use, can aggravate the illness risk of detection personnel when the patients are in contact with infectious diseases, etc. According to the invention, a face video is processed through an image preprocessing module, and an ROI area of each frame of a picture of the video is obtained by extraction; RGB channel separation is carried out on the ROI area ofeach frame of the picture through an IPPG signal acquisition module, and the gray average of the ROI areas of three separated color space sequence pictures is calculated to obtain three IPPG curves ofRGB three-color channels; the three IPPG curves are processed through an IPPG signal processing module to obtain an improved IPPG signal; and the physiological parameter calculation module calculatesa heart rate and a respiration rate according to the IPPG signal improved by a green channel, and a oxyhemoglobin saturation value is calculated according to the IPPG signal improved by red and bluechannels.

A pulmonary artery blood oxygen saturation monitoring device based on an optical fiber sensor is disclosed, wherein an input end of a driving circuit is connected with a computer, and the output end of the same is connected with two LED light sources, light signal is incident into a focusing lens; a probe system comprises two routes of optical fiber sensing lines, one end of a first route of optical fiber is connected with a gem crystal probe, and the other end is connected with the focusing lens; one end of a second route of optical fiber is connected with the gem crystal probe, and the other end is connected with a photoelectric converter via light signal; the two routes are staggered back and forth, the energy of the first route LED light source of optical fiber is transmitted to the surface of an air path via optical fiber and the gem crystal probe, enters pulmonary artery through the air path, returns to the internal side of the air path after being subjected to the diffuse reflection of the photon acted with blood, and is absorbed by the second gem crystal probe of the second route, light signal after optical fiber transmissison is absorbed by the photoelectric converter, enters a computer after amplified shaping circuit and data acquisition, and gives out parameters such as pulmonary artery blood oxygen saturation, cardiac rate and the like by software processing. The invention can realize high-precise real time monitoring without trauma.

The invention discloses an intelligent mattress and system for infant monitoring and a remote automatic adjustment method. A giant-piezoelectricity zinc oxide nanoarray with high sensitivity and measuring precision is used for measuring the heart rate value and the body motion, a capacitive film array of the mattress can measure the human body stress distribution, and if an infant sleeps beyond a safe area, the system can give an alarm. The mattress is further provided with a radiation-proof heating part. The intelligent mattress system has the advantages of adjusting the sleep environment by itself and adjusting the sleep environment by an APP. Sleep analysis can be carried out through the APP, and when the human body is uncomfortable and the environment exceeds a set range, the APP gives an alarm; the APP can issue instruction information through WIFI and transmit feedback information to an MCU, and the MCU controls a control device to work or not by controlling on / off of a relay. A guardian using the mattress can carry out remote monitoring and adjustment; besides, a remote video function can be started to relieve the pressure of the guardian.