2251results about How to "Reduce failure rate" patented technology

The present invention relates to a method of balancing a load and method of setting up a call using the load balancing method in a General Packet Radio Service (GPRS) network, which prevents a load from concentrating on a specific Gateway GPRS Supporting Node (GGSN) in the GPRS network, thus reducing a probability of failure in session establishment due to increased traffic. In the load balancing method, when a Service GPRS Supporting Node (SGSN) connected to a mobile node establishes a session, it selects a GGSN having a smallest number of established sessions among a plurality of GGSNs corresponding to an Access Point Name (APN) included in an Activate PDP Context Request message received from the mobile node and requests the selected GGSN to establish a session, thus solving a problem in which a load concentrates on a specific GGSN.

System and method for enabling the coexistence of multiple wireless communications on a single unit. A preferred embodiment comprises receiving a schedule of reserved message transfer times from a coexistence unit of a first wireless network in a mobile unit at a coexistence unit of a second wireless network in the mobile unit, selecting an operating mode for the coexistence unit based on the schedule, and transferring messages on the first wireless network and the second wireless network based on the schedule. The first wireless network is restricted to being able to transfer messages only during scheduled times. The sharing of the schedule of reserved message transfer times can enable the transfer of messages in the second wireless network to occur in between the reserved message transfer times, thereby reducing message collisions that can negatively impact data transfer performance of both wireless networks.

The invention relates to a photovoltaic array fault diagnosis and early warning method comprising the following steps: combining an Elman nerve network optimized by a non-linear least square method and a decision tree with experience knowledge so as to form a fault diagnosis model; collecting present photovoltaic array operation data and meteorology data, and computing errors when compared with historical normal state data; using the fault diagnosis model to obtain the corresponding fault type and credibility when the error is bigger than a threshold; finally integrally evaluating so as to obtain the final fault type credibility, and selectively carrying out fault early warning according to the credibility values; updating a fault knowledge base according to the field actual measurement conditions. The method combines the LM-Elman nerve network and the decision tree with experience knowledge so as to built the fault diagnosis model, thus improving the history data sensitivity, providing better prediction effect when compared with a BP network, and improving the network convergence speed and training precision; the experience knowledge is supplemented, thus providing stronger robustness; the method can timely detect and diagnose, thus reducing fault incidence rate, and ensuring the photovoltaic power station to stably work.

The invention discloses an electric pressure cooker based on an internet of things technology. The electric pressure cooker comprises an electric pressure cooker and strong algorithm software, wherein the electric pressure cooker serves as a thin client for running a weak algorithm, and controls strong algorithm of the electric pressure cooker to be arranged on the strong algorithm software; the strong algorithm software can be downloaded to a central control system of an intelligent housing system; the central control system and the electric pressure cooker perform communication based on Internet of things, and are connected with each other through a wireless communication mode or a wire communication mode. By the external strong algorithm, a user can look up data of all sensors in the electric pressure cooker on the central control system or a terminal device to change algorithm strategies according to the requirements, conveniently perform accurate control according to practical situations or use requirements, and relatively flexibly and individually use the electric pressure cooker.

Submount substrates are connected to both sides of a laser diode via hard solders. The lower submount substrate and a heat sink are connected together by a soft solder. The heat sink and a presser electrode are fixed with a predetermined gap therebetween via an insulating spacer. A coil electrode is fitted in a V-shaped groove of the presser electrode. As the coil electrode is deformed slightly elastically, the coil electrode is pressed against the upper submount substrate.

A wind power installation having external and/or internal redundancy derived by multiple, independent power generating systems arranged in parallel, but switchably interconnected to allow substantial continued operation in the event of a critical component failure.

The embodiment of the invention discloses an insulated gate bipolar transistor-driven protective circuit which comprises a signal transmission circuit, a gate pole driving circuit, a voltage detecting circuit and a blocking time setting circuit, wherein the signal transmission circuit is used for transmitting a driving signal to the gate pole driving circuit; the gate pole driving circuit is used for amplifying the driving signal from the signal transmission circuit, and then driving an insulated gate bipolar transistor to act through the amplified driving signal; the voltage detecting circuit is used for transmitting a fault indicator signal to the blocking time setting circuit once the voltage between a collecting electrode and an emitting electrode of the insulated gate bipolar transistor is detected over a set voltage threshold, wherein the voltage threshold is more than the driving voltage of the insulated gate bipolar transistor; the blocking time setting circuit is used for transmitting a locking signal to the signal transmission circuit after receiving the fault indicator signal from the voltage detecting circuit; and the signal transmission circuit also can be used for blocking and outputting the driving signal to the gate pole driving circuit after receiving the locking signal from the blocking time setting circuit. With adoption of the insulated gate bipolar transistor-driven protective circuit, misinformation of a short circuit fault can be avoided.

A wind power installation having external and/or internal redundancy derived by multiple, independent power generating systems arranged in parallel, but switchably interconnected to allow substantial continued operation in the event of a critical component failure.

The invention discloses a running state monitoring and failure diagnosis method for a tobacco logistics system. The method comprises the following steps: (1) acquiring the whole running state information of the logistics system in real time on line through a data acquisition system; (2) remotely monitoring the state of common logistics system equipment in real time, and performing failure diagnosis; (3) firstly, determining various combination modes of the failure reasons of each key logistics equipment, and secondly, inputting a diagnosis rule into an SQL (Structured Query Language) database of a failure diagnosis server, wherein the diagnosis rule serves as the source of a failure experience knowledge base; (4) storing failure result information which is obtained by automatic diagnosis through the failure diagnosis server and serves as alarm information into a failure alarm record base, triggering a wireless alarm module, and informing an on-duty equipment maintainer of failure information immediately in a short message mode. According to the method, the failure burst rate of the tobacco logistics system is effectively reduced, the failure maintenance efficiency is improved, and the equipment maintenance cost is reduced.

The invention relates to a method for carrying out online monitoring on an operating state of a transformer OLTC (on-load tap-changer) and belongs to the field of signal monitoring. The method comprises the following steps of: acquiring a mechanical vibrating signal of a box wall of a transformer in real time; carrying out phase space reconstruction on the vibrating signal x(t) by using a delay coordinate method; determining a designated area V of a reconstructed phase space; calculating density distribution of space phase points; calculating a correlation coefficient rho of a space density curve before and after the OLTC actuates; if the correlation coefficient rho is more than 0.8, judging that the operating state of the OLTC is normal; and if the correlation coefficient rho is less than 0.8, judging that the operating state of the OLTC is abnormal. By carrying out real-time monitoring on the vibrating signal in the actuating process of the OLTC, efficient and accurate judgment on the working state of the transformer OLTC can be implemented. The method can be widely used for the field of online monitoring and fault diagnosis of various transformer OLTCs.

The invention provides a method, device and system for processing a fiber channel identity, and network equipment. The method comprises the following steps of: receiving a first fabric login (FLOGI) or a first fabric discovery (FDISC) sent by host equipment, wherein the first FLOGI or the first FDISC comprises an equipment identifier of an N port of the host equipment; selecting a FC ID (Fiber Channel Identity) from pre-applied non-distributed FC IDs according to the first FLOGI or the first FDISC; and encapsulating the selected FC ID into a first LS_ACC (Link Service Accept) and sending the first LS_ACC to the host equipment. In the technical scheme disclosed by the invention, by pre-applying the FC ID, when the host equipment applies for the FC ID, the FC ID can be directly distributed to the host equipment from the pre-applied FC IDs; therefore, an interaction link is omitted when the host equipment applies for the FC ID; and the problem of FLOGI or FDISC failure of the host equipment caused by delayed FC ID distribution is solved.

The embodiment of the invention discloses a method and a device for compiling a control program. The method comprises the steps of: compiling and linking a source program to generate an intermediate language program with limited variable features; mapping the intermediate language program with the limited variable features into a target command based on a mapping relationship between the intermediate language program with the limited variable features and the target command which can be directly carried out by a target processor. Through the embodiment of the invention, demands of the system on reliability and safety can be satisfied.