1133 results about "Heartbeat" patented technology

A method, system and program code for implementing distributed locks to be maintained through the use of on disk heartbeats. An instance of a node need only maintain a single heartbeat for all locks associated with the node and all of its processes. The node updates its heartbeat by accessing common storage, either virtual or physical, and updating a timestamp value in its heartbeat within a predetermined time interval, otherwise the heartbeat becomes stale. Expired heartbeats can be cleared or broken to allow redistribution of any locks associated therewith. The inventive technique may be implemented in a traditional computer environment or in a fully or partially virtualized environment and requires no use of an IP network or a separate network based lock manager.

To satisfy host requests, two competing processors self-manage access to a shared resource. Each processor maintains a lock table listing that processor's access state regarding the shared resource. Each processor repeatedly sends the other processor a state announcement message representing the processor's state. These include birth cry, heartbeat, or death knell messages. Whenever certain join-entry conditions apply to a processor, the processor performs a JOIN operation to evaluate and attempt to synchronize its lock table with the other processor's lock table. If data is needed from the other processor's lock table, the processor changes its state announcement message to birth cry. If the processor successfully synchronizes its lock table with the other processor, the JOIN operation dictates DUAL mode for that processor. If the synchronization attempt fails, SOLO results. When JOIN completes, the processor operates in its chosen mode. In DUAL, the processor's state announcement message is heartbeat, signifying healthy operation. In DUAL, the processors cooperatively establish temporary single-processor locks on the shared resource to satisfy host requests. In SOLO, a processor sets its state announcement message to death knell, advising the other processor not to access the shared resource. Also in SOLO, the processor attempts to "acquire" the shared resource by storing a predetermined identifier thereon. In SOLO, a processor refrains from accessing the shared resource unless it has acquired it.

The present invention provides an FMCW broadband life detection radar breathing and heartbeat signal extraction algorithm. Compared with the prior art, the algorithm has the advantages that breathing and heartbeat signals of multiple persons can be obtained simultaneously, the boundaries and energy of reconstructed breathing signals can be very well kept by using Coiflets wavelets compared with traditional frequency-domain filtering, especially processing conducted on short-time signals is obvious, higher harmonics of the breathing signals are filtered out by adopting a double-coefficient based LMS self-adaptive filtering algorithm, and the self-adaptive filtering algorithm does not need additional reference signals. Due to the fact that a degressive search step size coefficient is adopted in the algorithm, the heartbeat signals can be better retained while breathing signal harmonics are filtered out, the heartbeat signals can be rapidly converged by selecting the appropriate search step size coefficient and adopting the double-coefficient based LMS self-adaptive filtering algorithm, and smaller stable imbalance is kept in longer time, so that finally separated heartbeat signals are more accurate in frequency component within a long time.

Methods for re-configuring a cluster computer system of multiple or more nodes when the cluster experiences communications failure. First and second nodes of the cluster have respective channel controllers. A SCSI channel and the controllers communicatively connect the multiple nodes. When a node becomes aware of a possible communications failure, the node attempts to determine the authenticity the failure and responds according to the determined authenticity. According to one method, a first node detects heartbeat node-to-node communications failure on the channel and then tests a physical drive on the channel. If the testing is successful, the node kills the other node. If the testing is unsuccessful, the first node commits suicide. In one embodiment, the coupling includes multiple channels communicatively coupling the first and second nodes and the first node selecting one of the channels for node-to-node communications. In this environment, choosing a physical drive involves testing node-to-node communications on another of the channels if no physical drive is online on the channel (and terminating the re-configuring method). If a drive is available, the first node uses the first physical drive online on the channel for testing. In another method, the second node initially detects communications failure and communicates that by attempting to negotiate wih the first node for a new configuration of the computer system. The first node tests a physical drive in response and negotiates with the second node if the testing was successful. If the testing was unsuccessful, the first node commits suicide.

A method, article, and system for the dynamic determination of an optimal interval for the generation of a heartbeat signal by a device employed in a system with a dynamic timeout interval.

The present invention is directed to a heartbeat apparatus via a remote mirroring link for a multi-site and a method for using the heartbeat apparatus. Information is registered in a configuration table, wherein the configuration table stores host ID information and volume ID information. The configuration table is configured, access requests from a host are verified, host activity is recorded, and additional records are created in the configuration table when a match is found between the access records and the registered information. In a multi-site having two, three or more sites in a multi-hoop configuration, a failover process with remote mirroring pairs is performed by configuring a correlation between a remote mirroring pair group, an activity monitor function and an alert function, wherein the alert function is performed by a host sending status information regarding activity monitoring in a storage system and retrieving the notification information via a plurality of data links, and creating a status manage table using the notification information.

The invention relates to a dynamic networking method and a communication method based on RS-485. The dynamic networking method comprises the following steps: step S1, sending a query frame to all slave machines through an RS-485 bus at every a heartbeat time interval by a host machine; step S2, sending query response frames to the host machine by all the slave machines on the RS-485 bus after receiving the query frame; step S3, judging whether the slave machines of which the addresses are not within an effective addressing range exit by the host machine, and if the addresses of the slave machines are not within an effective addressing range, identifying the slave machines as to-be-addressed equipment; step S4, broadcasting an addressing frame by the host machine through the RS-485 bus; and step S5, receiving the addressing frame corresponding to an ID of the slave machine by each slave machine and changing the current slave machine address into a new slave machine address. According to the method disclosed by the invention, the host machine is used for periodically querying address information of the slave machines and identifying new equipment in a network by comparing the current address information of the slave machine with the effective addressing range so that each piece of new equipment has an effective address, and thus the problem of inconvenience caused in dynamic addition and deletion of nodes because the R-485 bus adopts a master-slave type communication method is solved.

An embodiment of the invention discloses application heartbeat cycle adjusting method and device, and a terminal. The application heartbeat cycle adjusting method includes steps of determining that an application is in a heartbeat adjusting blacklist according to identification of the application; and adjusting the first heartbeat cycle of the application into the second heartbeat cycle according to the preset heartbeat trigger cycle, wherein the heartbeat adjusting blacklist contains the identification of the application subjected to heartbeat cycle adjustment, the first heartbeat cycle of the application is an original heartbeat cycle of the application, the second heartbeat cycle is the heartbeat cycle of the application after being adjusted according to the preset heartbeat trigger cycle, the preset heartbeat trigger cycle is an adjusting cycle obtained by adjusting the first heartbeat cycle, so that the second heartbeat cycle of the application and the heartbeat trigger cycle are superposed. Accordingly, originally disordered heartbeat cycle time sequence in the terminal is adjusted into order heartbeat trigger cycle time sequence, times for waking up the terminal can be reduced, and standby power consumption of the terminal is decreased.

A user of a computing device can be authenticated using image information captured by at least one camera of the computing device. In addition to analyzing the image information using a facial recognition algorithm, for example, variations in color of a portion of the captured image information corresponding to a user's face can be monitored over a period of time. The variations can be analyzed to determine whether the captured image information likely corresponds to an actual human user instead of a representation (e.g., photo) of a human user, such as where the chroma variations in at least a red channel occur with an oscillation frequency and amplitude consistent with changes due to a pulse or heartbeat.

An electronic device may include a processor and a network interface that may include a first radio and a second radio. The processor may be configured to perform wireless communication jamming attack detection by occasionally performing clear channel verification utilizing the network interface to determine whether a threshold number of devices' channels are incapacitated in a wireless network within a threshold amount of time and / or by sending a heartbeat signal from the first radio and determining whether the second radio received the heartbeat signal.

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.

The invention relates to a wearable flexible stress sensor and a preparation method and application thereof. Firstly, functional ink suitable for screen printing is prepared, and is printed on a wearable substrate through a screen printing method, and the stress sensor of a desired specification is produced. The stress sensor is used for monitoring physical deformation of stretching, bending, touching and the like from small ranges to large ranges, and has multiple application in the electronic skin fields and the biomedical application fields of human skins, expressions, pulses, heartbeats and the like, the human-computer interaction fields and the fields of virtual reality, entertainment technology and the like. The flexible stress sensor of the invention has the following advantages that the sensor has excellent stretching elasticity, and stretching strain can reach 100%; sensitivity is extremely high, and a sensitivity parameter (Gauge Factor) can be up to 8000 or more; linear relationships of working curves are excellent, stretching repeatability is good, and a stretching cycle lag is small; and a preparation process is simple, costs are low, massive integrated-device preparation is suitable, and application prospects are wide.

Some embodiments provide a method for detecting a failure of a layer 2 (L2) bump-in-the-wire service at a device. In some embodiments, the device sends heartbeat signals to a second device connected to L2 service nodes in order to detect failure of the L2 service (e.g., a failure of all the service nodes). In some embodiments, the heartbeat signals are unidirectional heartbeat signals (e.g., a unidirectional bidirectional-forwarding-detection (BFD) session) sent from each device to the other. The heartbeat signals, in some embodiments, use a broadcast MAC address in order to reach the current active L2 service node in the case of a failover (i.e., an active service node failing and a standby service node becoming the new active service node). The unidirectional heartbeat signals are also used, in some embodiments, to decrease the time between a failover and data messages being forwarded to the new active service node.

A cluster computing system, comprises: a production host group; a standby host group coupled to the production host group by a network; and a remote mirror coupled between the production host group and the standby host group, the remote mirror including a production site heartbeat storage volume (heartbeat PVOL) and a standby site heartbeat storage volume (heartbeat SVOL) coupled by a remote link to the heartbeat PVOL, with the production host group configured to selectively send a heartbeat signal to the standby host group by use of at least one of the network and the remote link. A method of checking for failure in a cluster computing system, comprises: generating a heartbeat signal from a production host group; selectively sending the heartbeat signal to the standby host group from the production host group by use of at least one of a network and a remote link; and enabling the standby host group to manage operations of the cluster computing system if an invalid heartbeat signal is received by the standby host group from the production host group.

The invention provides a network human face recognition system with an intelligent management system, the system comprises a system management module and a plurality of recognition modules which are respectively in network connection with the system management module, wherein the system management module comprises a network data server and a management terminal which is in circuit connection withthe network data server; and the recognition modules comprise recognition control terminals and a plurality of electric control door locks, a plurality of acquisition modules and clients which are respectively in circuit connection with the recognition control terminals; and the clients comprise the functions of access control, attendance management and intelligent monitoring. The system management module can be connected with the plurality of the recognition modules and simultaneously control the plurality of the electric control door locks and the acquisition modules, thereby improving the scalability; the clients are arranged in the recognition modules, thereby proving more functional modules and improving the scalability of the system; and the recognition control terminals adopt the heartbeat mechanism, thereby realizing the periodic synchronous information interaction between the system management module and the recognition modules and ensuring the stability of the operation of the system.

The invention discloses a method for achieving high reliability of key equipment. The method comprises the following steps: deploying a first server and a second server; appointing an IP address, namely a floating IP shared by the two servers; mutually monitoring states of the two servers through heartbeat, and performing real-time data synchronization; when the first server is abnormal, updating the floating IP to the second server from the first server, and taking over the service of the first server from the second server through the floating IP.

The invention discloses a connection keeping method, a device of an application program client and an applicable server and a method which comprises a mobile terminal and a mobile communication network of the device for transmitting data to a mobile terminal. The data transmitting method comprises that the mobile terminal obtains a reference value of a heartbeat period from the mobile communication network; the mobile terminal determines an actual value of the heartbeat period based on the reference value of the heartbeat period; and the mobile terminal triggers a registered application program client to send heartbeat data packages to the corresponding applicable server based on the actual value of the heartbeat period. According to the invention, a plurality of application program clients resided on the mobile terminal are triggered uniformly and dispatches the heartbeat through the mobile terminal. The heartbeat data packages are sent to the respective applicable server at the same time and in the same time intervals, so that the energy consumption of the mobile terminal and the consumption of the occupancy of wireless source caused by frequent asynchronous sending of heartbeat packages by the plurality of application program clients are effectively reduced.

PCT No. PCT / GB96 / 00908 Sec. 371 Date Jan. 2, 1998 Sec. 102(e) Date Jan. 2, 1998 PCT Filed Apr. 15, 1996 PCT Pub. No. WO96 / 32158 PCT Pub. Date Oct. 17, 1996An electric or electromagnetic field generator for therapeutic use. A heartbeat signal produced by a user is monitored to derive a signal indicative of the frequency of the user's heartbeat. A generator creates an electric or electromagnetic field based on a combined signal derived from a first signal dependent on the determined heartbeat frequency, and a second signal stimulating the brain activity of the user. The device may be worn by the user, on an ongoing basis. The second signal may be modified to provide a train of pulses having a width substantially equal to a neuron depolarization pulse to improve the user's response to the signal.

A method and apparatus for health risk assessment by means of measuring and evaluating the functional state of the mechanisms of physiological adaptation of human organism comprises recording analog signals of heartbeat intervals, filtering the analog signals of heartbeat intervals, converting the analog signals to digital signals of heartbeat intervals, transmitting the digital signals of heartbeat intervals to a central processing unit, detecting R-peaks from the digital signals of heartbeat intervals, measuring time intervals between two consecutive said R-peaks, calculating heartbeat variability parameters from said heartbeat intervals, calculating degree of tension (DT) of regulatory mechanisms and their functional reserve (FR) based on said heartbeat variability parameters, calculating plurality of functional states based on the DT and FR, and calculating posteriori probabilities based on plurality of functional states, wherein probabilities of health risk is determined based on values of DT, FR, at least one functional state and the posteriori probabilities.

The invention discloses a method, a system and an apparatus for realizing always-online internet application. According to the method, terminal application clients are in long connection with a terminal application server through an always-online client and an always-online server; when application push notifications are generated by third party applications, after being processed by the always-online server, the push notifications are pushed to the always-online client and then distributed to the terminal application clients through the always-online client; the always-online client receives heartbeat connection from each terminal application client, converges the heartbeat connections of all the terminal application clients and transmits to the always-online server; and correspondingly, the always-online server distributes the received heartbeat connections to the corresponding terminal application servers. Therefore, channel occupancy is reduced and energy consumption of the terminal is lowered.

A method for monitoring heartbeat of network based on UDP protocol includes collecting state information and carrying out compression and package on collected information then sending it to conversion server of network address by network terminal unit at a fixed interval time, sending information to central heartbeat server for making decompression .

The invention provides a redundant heartbeat link and opposite-end restarting link based double-controller storage system and belongs to the technical field of computer storage. Processors are connected through NTP (non-transparent bridge) and serial-port links, so that data mirroring and cache mirroring are realized and operating states of the processors can be mutually monitored in real time. When one of mainboards breaks down, another mainboard is capable of automatically repairing by restarting an opposite-end mainboard via a restarting link, even if one of the mainboards fails to self-repair, another mainboard also can completely take over all operations of the failed mainboard, and high reliability and stability of storage products are guaranteed.

The invention relates to a method for monitoring a working state of an antenna of a 4G (Fourth-Generation) base station in real time. Intelligent monitoring equipment is additionally arranged at the position of a transmitting antenna; when the antenna normally works, a sensor is adopted to acquire corresponding antenna working state data information, the antenna working state data information is transmitted to a data processing part of the intelligent monitoring equipment to be subjected to necessary filtering shaping and then is converted into digital information, judgment is made after the data is analyzed, and whether the antenna normally works is detected; if the antenna is normal, the intelligent monitoring equipment does not respond, and until a timer T arrives, the intelligent monitoring equipment automatically sends a heartbeat packet to a maintenance terminal to prove that the intelligent monitoring equipment works on line normally; and if the antenna is abnormal, the intelligent monitoring equipment immediately transmits parameters of the antenna abnormity and a geographic position of the antenna of the base station to the maintenance terminal and finds out the abnormal base station and the reasons that the abnormal base station possibly generates abnormity. According to the invention, the working condition of the antenna of the base station can be monitored by adopting a more automatic mode, and intelligent monitoring on the working condition of the antenna is implemented.

The invention provides a control method of stream media forwarding servers. The control method comprises the following steps: 1) the load index of each forwarding server is calculated, wherein the load index is calculated in the following manner: the load index is equal to the sum of a CPU occupancy rate, a memory occupancy rate and a network duplex flow / basic network bandwidth; load indexes are arrayed according to size from small to large, namely the loads of the forwarding servers are from small to large; 2) the IP address and the port of the server of which the index is minimum are selected and provided to a device when the device accesses to a network, and the device sends a media stream to the specified address and the port; 3) the forwarding server sends heartbeat packets to a control server according to a set time interval, wherein the heartbeat packets comprise the load parameter information of the transmission server; 4) when the load index value of the forwarding server of which the load index is minimum reaches a 'warning' grade, an idle standby forwarding server is started to use. For the control method disclosed by the invention, based on original hardware conditions, the capacity is increased, and the cost is reduced.

An embodiment of the invention discloses a dual-computer hot redundancy back-up method and a dual-computer hot redundancy back-up system. The dual-computer hot redundancy back-up method comprises the steps: a second server defaulted as a slave device monitors the working state of dual-computer hot redundancy back up through a heartbeat package channel between the second server and a first server defaulted as a main device; and if the working state is stoppage, the second server is shifted to be the main device. The hardware configuration is simple, and the network transmission flow can be decreased only through one heartbeat package channel. In the embodiment scheme, one device is defaulted as the main device, and the other device is defaulted as the slave device. When the main device breaks down, the time interval of fault detection is short, the efficiency is high, and compared with about 10 seconds by means of the existing technical scheme, the fault detection work only needs about 3 seconds by means of the method.

The invention discloses a thread pool managing method and system. The system comprises a working thread creating unit, a detecting thread creating unit, a working thread calling unit, a heartbeat signal detecting unit and a zombie thread processing unit. The managing method includes: creating a working thread, and delivering the same into a thread pool queue; creating a detecting thread; calling the working thread in the thread pool queue to execute a task; using the detecting thread to detect whether the heartbeat signals of each working thread is received or not in a heartbeat cycle; using the detecting thread to set the working threads whose heartbeat signals are not received in the heartbeat cycle as zombie threads, releasing all the resources of the zombie threads, and notifying a user of the fault positions through a user interface. The method and system has the advantages that the working threads in the thread pool are managed through the thread pool, dependence on operating system management is avoided, zombie threads can be detected timely and accurately, and the fault positions in programs using the zombie threads to execute tasks can be found and notified to the user.

The invention discloses a physical sign non-contact intelligent monitoring system based on a millimeter-wave radar. A millimeter-wave radar front-end module transmits and receives a millimeter-wave radar signal, and the millimeter-wave radar front-end module is connected with a signal processing module; a signal processing module is connected with a communication interface module, analyzes the echo signals after sampling quantification to obtain vital sign data, including frequency parameters of respiration and heartbeat, of a tested person, and transmits a processed information result to an upper computer through the communication interface module; and the upper computer compares the received vital sign data with preset data, uploads the data and a comparison result to a background server, gives an alarm to the mobile terminal if the comparison result is abnormal, and automatically gives an alarm when the comparison result exceeds a preset maximum value. According to the invention, the real-time intelligent monitoring of vital signs of indoor old people is realized, including monitoring of breathing and heartbeat parameters, and real-time alarm is carried out in case of abnormality so as to prevent accidents.

Provided are methods and apparatuses for dynamically generating a simulated tactile heartbeat sensation. The apparatus can comprise a vibrator, a processor, and a power source. The methods can comprise providing a digital pulse signal to a vibrator, the digital pulse signal being dynamically controlled by a processor.

The invention discloses a method, a system, a client and an application server to maintain a client state, which maintains the state of the client according to a client signature information through receiving a heartbeat packet which is provided with the client signature information and sent by the client with a fixed time interval. The method, system, client and application server leads the state information of the client to be updated with a very short fixed time interval, thus further realizing the real-time maintenance of the client state.

The invention relates to an anti-detachment technology field, in particular to a method for preventing an in-car terminal from being detached. The method includes: 1) stipulating a fixed password between the in-car terminal and a vehicle ECU; 2) generating a random password R by the vehicle ECU, joining the fixed password of the vehicle ECU with the random password R, generating an MD5 encrypted value which is a dynamic password A, sending a heartbeat interactive request to the in-car terminal by the vehicle ECU through a CAN bus, wherein a frame of the heartbeat interactive request contains the random password R; 3) after a CAN transceiver of the in-car terminal receives the heartbeat interactive request of the vehicle ECU, extracting the random password R, joining the fixed password of the in-car terminal with the random password R by the in-car terminal, generating an MD5 encrypted value which is a dynamic password B, and sending the dynamic password B to the vehicle ECU through the CAN transceiver, wherein the dynamic password B is used as a heartbeat frame; 4) after the vehicle ECU receives the heartbeat frame, comparing the dynamic password A with the dynamic password B, and if the dynamic password A coincides with the dynamic password B, determining that the in-car terminal is normal, otherwise determining that the in-car terminal is detached. The method has a characteristic of high safety.