60 results about "Alarm indication signal" patented technology

Connectivity fault notification is provided by generating an alarm indication signal at a device that is logically adjacent to the fault, and forwarding the alarm indication signal upward through various levels to at least one client level entity. The alarm indication signal may be suppressed at any level for a service instance if service is restored at that level, or if a protection path prevents disruption of the service instance at that level, or auto-suppressed at an originating node based on number of times transmitted or elapsed time. The alarm indication signal may include a point of failure indicator such as the MAC address of the device that generates the alarm indication signal, or a failed resource identity such as an IEEE 802.1AB LLDP MAC Service Access Point (“MSAP”). Further, the alarm indication signal may be employed to trigger use of the protection path.

The invention provides a vehicle control method and device based on a BSG motor and belongs to the field of automobile electronic control. The vehicle control method and device based on the BSG motoris used in an engine controller. The vehicle control method based on the BSG motor comprises the steps of receiving current vehicle information collected in real time, wherein the current vehicle information comprises a current engine state, a current gear, a current vehicle speed, a current first battery capacity, a current second battery capacity, a current BSG motor mode, a current acceleratorpedal opening, a current brake pedal opening and a current coolant temperature; according to the current vehicle information, determining a control strategy; according to the control strategy, transmitting a corresponding control signal; according to the current vehicle information, the control strategy and the corresponding control signal, judging the current fault mode; and according to the current fault mode, transmitting a corresponding alarm indication signal to an instrument panel. Therefore, the vehicle control strategy with 48-volt weak mixing system is integrated in the engine controller so that the vehicle is controlled by at a low cost on the basis of the BSG motor.

Provided is a method for propagating a maintenance signal that can notify an Ethernet layer as well as a VPWS, which is a multi-protocol label switching (MPLS) layer, that a defect has occurred when the defect occurs in a virtual private wire service (VPWS) network using synchronous digital hierarchy (SDH)/synchronous optical network (SONET) as a physical layer. The method includes the steps of: when a physical defect signal is detected from a physical layer, generating a physical layer alarm indication signal (AIS) and a physical layer remote defect indication (RDI) signal, and transmitting the physical layer RDI signal to a neighbor node in the backward direction of traffic; when the physical layer AIS is detected, generating and transmitting, at an MPLS layer, an MPLS backward defect indication (BDI) signal indicating a backward defect to an ingress node, and generating and transmitting, at an Ethernet layer, an Ethernet AIS to an Ethernet subscriber device connected to an egress node; and generating and transmitting, at the Ethernet subscriber device receiving the Ethernet AIS, an RDI signal indicating a backward Ethernet flow defect to an Ethernet subscriber device connected to the ingress node.

The embodiment of the invention discloses a protecting method for service transmission, comprising the following steps: alarm indication signals containing protective indicating identification is obtained and the protective indicating identification shows the protective state of a channel; the protective state of the channel in which faults occur is determined according to the obtained protectiveindicating identification; and if the protective state of the channel is determined to be that protection is not available, protection switching is carried out. The embodiment of the invention provides network equipment, which comprises an obtaining unit, an identification unit and a first processing unit; the obtaining unit is used for obtaining alarm indication signals containing protective indicating identification and the protective indicating identification shows the protective state of a channel; the identification unit is used for determining the protective state of the channel in which faults occur according to the obtained protective indicating identification; and the first processing unit is used for carrying out protection switching when the identification unit determines that the protective state of the channel is no available protection. The technical proposal of the embodiment of the invention can reduce service loss in the protection switching.

In an OTN (Optical Transport Network), an OTN interface of a network element may receive a BDI (Backwards Defect Indicator) signal from a far end network element to which OTN frames are being transmitted. A BDI signal indicates the occurrence of a unidirectional failure in the transmission of OTN frames to which the far end network element responds by switching its routing to the network element. The OTN interface generates an AIS (Alarm Indication Signal) for its network element so that the network element switches network communication channels to the far end network element to ensure bidirectional switching upon a unidirectional failure.

A method of detecting signal degrade in an ATM network, and a network element using such method are disclosed. Signal degrade at the ATM layer of the network is detected by monitoring signal degrade at the physical layer of the network. In response, ATM cells indicative of the signal degrade may be generated at the ATM layer, and protection switching may be effected. Preferably, signal degrade at the physical layer may be monitored by determining a bit-error-rate at the physical layer. ATM alarm indication signal (“AIS”) cells or ATM protection switching coordination protocol (“CP”) cells may be generated to effect the protection switching.

The invention provides an imaging case chip, an imaging case, and an alarming treatment method of recording material remaining quantity. The imaging case chip includes an information storage unit, a delay alarming unit and a simulation sensor, wherein the information storage unit is used for sending an alarming indication signal to the delay alarming unit when the recording material remaining quantity is lower than a pre-arranged threshold value; the delay alarming unit is used for prolonging the effective time of the alarming indication signal, and the effective time of the alarming indication signal is longer than the power supply interval time of the imaging device to the information storage unit and the simulation sensor; and the simulation sensor is used for issuing alarming information when the alarming indication signal kept on the delay alarming unit is detected, or issuing recording material sufficient information when the alarming indication signal kept on the delay alarming unit is not detected. The invention can solve the problem that as the power supply time of the imaging device to the information storage unit and the simulation sensor of the imaging case chip is asynchronous, the imaging case chip cannot provide alarming information accurately.

An embodiment of the invention discloses a controlling method for a WiFi protected setup and equipment thereof, which are used for ensuring high safety in accessing the WPS. The controlling method for the WiFi protected setup according to an embodiment of the invention comprises the steps of: acquiring a WPS accessing request of first user equipment, wherein the WPS accessing request carries a personal identification number PIN; according to the WPS accessing request, outputting an alarm indication signal to second user equipment so that the second user equipment transmits a first instruction or a second instruction according to the alarm indication signal; if the first instruction which is transmitted by the second user equipment is acquired, receiving the WPS accessing request and stopping the alarm indication signal; and if the second instruction which is transmitted by the second user equipment is acquired, refusing the WPS accessing request and stopping the alarm indication signal.

The invention provides a three-phase alternating voltage phase sequence monitoring system, including: a step-down filtering and shaping circuit; a comparator circuit which compares a three-phase alternating voltage processed by the step-down filtering and shaping circuit with a reference voltage and outputs a three-channel comparison result; a logic circuit which detects a phase sequence of the three-phase alternating voltage according to the three-channel comparison result and outputs a judgment signal; a driving protection circuit which drives a relay according to the judgment signal; and a relay which generates an indication signal according to an output signal of the driving protection circuit, outputs a phase sequence correct indication signal when the phase sequence of the three-phase alternating voltage is correct, and outputs an alarm indication signal when the phase sequence of the three-phase alternating voltage is in disorder or a phase loss occurs. The three-phase alternating voltage phase sequence monitoring system provided by the invention detects the phase sequence of the three-phase alternating voltage, thereby driving the relay, and protecting safety of electric equipment, and effectively avoiding unnecessary loss brought by the problems of phase sequence disorder and phase loss; and at the same time, since the three-phase alternating voltage phase sequence monitoring system is integrated in a circuit module of a chip, the system is small in size, and the system is convenient to operate and high in detection precision.

The invention provides a thermocouple welding detection device which comprises a signal selection circuit, a first comparison circuit, a second comparison circuit, a switching circuit and an alarm indication circuit. The signal selection circuit is electrically connected with a thermocouple. The signal selection circuit receives a selection signal and outputs a first direct current voltage to the first comparison circuit or outputs a second direct current voltage to the second comparison circuit according to the selection signal. The first comparison circuit compares the first direct current voltage with a first reference voltage and then outputs a first control signal. The second comparison circuit compares the second direct current voltage with a second reference voltage and then outputs a second control signal. The switching circuit receives the first control signal and the second control signal and outputs an alarm indication signal according to the first control signal and the second control signal. The alarm indication circuit receives the alarm indication signal and indicates the welding conditions of thermocouple wires of the thermocouple according to the alarm indication signal.

The invention relates to a channel protection method of a looped network system with IP RAN (Internet Protocol-Radio Access Network) forward compatible with MSTP (Multi-Service Transport Platform). If a fault occurs in an IP RAN network, the bidirectional forwarding detection conversation of an IP RAN equipment host node stays in a failure state, IP RAN equipment compatible with MSTP businesses converts the failure state of the PW (Pseudo-Wire) layer bidirectional forwarding detection conversation into a channel alarm indication signal of MSTP at a butting position, and MSTP equipment carries out concurrent transmitting and selective receiving protection switch on channels. If the fault occurs in an MSTP network, the MSTP equipment at both ends of a fault point respectively insert the channel alarm indication signal to the downstream till the butting position between the MSTP network and the IP RAN network; and at the butting position, the IP RAN equipment compatible with the MSTP businesses stops sending pseudo-wire bidirectional forwarding detection conversation frames, and the IP RAN equipment host node carries out the concurrent transmitting and selective receiving protection switch on the channels. The invention realizes the channel protection of the looped network system with IP RAN forward compatible with MSTP.

A method for channel protection switching of an optical network device, an Optical Transport Network (OTN) device, and a Passive Optical Network (PON) device is provided. The method includes detecting, by the PON device, whether an OTN alarm indication signal is received after discovering a fault. If the OTN alarm indication signal is received, the alarm generated by the PON device is screened so that the PON device does not perform channel protection switching. The PON device detects whether an OTN alarm indication signal is received, and screens off the alarm generated by the PON device so that the PON does not generate futile alarms or lead to futile switching when the OTN fails but the PON works normally.

A bidirectional line switched ring network which enables high-speed operation with improved reliability because of a reduced software processing load is disclosed, and the network includes a plurality of optical transmission equipment sets connected in a ring form, wherein optical transmission equipment provided in a node on the transmission side performs transmission to each lower-order channel by attaching a transmission-side node ID, and, optical transmission equipment provided in a node on the reception side collates the received transmission-side node ID with an expected value of the transmission-side node ID having been set in advance, and when the collation does not match, the optical transmission equipment in the node on the reception side prevents a misconnection in the event of a failure by inserting an alarm indication signal.

The invention discloses a method and device for transferring an error code status, belonging to the field of communications. The method and the device are used for solving the problem that the realization of error code status transfer is complex. The method for transferring error code status provided by the invention comprises the following steps of: detecting a continuity check (CC)/connectivity verification (CV) message; if no CC/CV message is detected, reporting a signal fail (SF) alarm message to the network side; when the CC/CV message is detected, further detecting a forward defect indication (FDI) message or an alarm indication signal (AIS) message; and determining whether to report a signal degradation (SD) alarm message according to the detection result of the FDI message or the AIS message. The method and the device provided by the invention are applicable to the field of communications and are used for transferring the error code status.

The invention provides a method and device for transmitting messages. An aggregated link trunk is set between a first device and a second device. A state machine of a maintenance association end point(MEP) of the first device is currently located on a first single board of the first device. The level of the MEP of the first device is different from that of the MEP of the second device. The methodcomprises the steps that when the state machine of the MEP of the first device is migrated from the first single board to a second single board of the first device, the first device suppresses faultalarm and sends an alarm indication signal (AIS) to the second device according to a preset frequency; and when the state machine of the MEP of the first device is migrated completely from the first single board to the second single board of the first device, the first device recovers the fault alarm and stops sending the AIS. The false alarm resulting from state machine migration timeout is effectively suppressed through utilization of the alarm indication signal (AIS). The method and the device are simple and feasible. Interconnection is not influenced.

The invention provides an AXI streaming data frame bus combining device, which relates to the technical field of digital communication and comprises a multi-stage register, a data indicator, a preparation signal generator, a multiplexer and a data transmission indicator; the multiplexer is used for acquiring a first indication signal and to-be-transmitted data sent by any one main device, and writing the acquired indication signal and the to-be-transmitted data into the multi-level register; the multi-level register is used for storing the first indication signal and the data to be transmittedsent by any master device, and sending the first indication signal and the data to be transmitted to the slave device; the data indicator is used for generating a second indication signal; the data transmission indicator is used for generating a third indication signal; and the preparation signal generator is used for generating preparation signals of the master devices and obtaining the preparation signals sent by the slave devices. The technical problem that an existing AXI streaming data frame bus combining device is low in efficiency when a plurality of master devices transmit data to slave devices is solved.

The invention discloses a method for preventing the defect transparent transmission of a section layer of synchronous digital hierarchy equipment, which relates to the technical field of synchronous digital transmission. The method comprises the following steps of: detecting a main service data frame of a service data interface, jointed with a crossing unit, on the optical interface unit system side of the synchronous digital hierarchy (SDH) equipment in real time, and judging the main service data frame gives an out of frame (OOF) alarm or not; when the main service data frame is judged to give the OOF alarm, inserting an administrative unit-alarm indication signal (AU-AIS) in the direction of the optical interface unit line side of the SDH equipment; and when the AU-AIS passes through the optical interface unit line side of the SDH equipment, performing scrambler processing and downwards transmitting the processed AU-AIS. By the method, clock abnormities can be prevented from causing the defects of error codes, alarm and the like of the section layer comprising a regenerator section and/or a multiplexing section at each downstream site, so the security of services of sites non-adjacent to a failing site is greatly improved.