37results about How to "Fault detection" patented technology

The invention discloses an electric power circuit fault detecting system which is used for detecting electric power circuit faults and conducting remote alarming. The electric power circuit fault detecting system comprises a digital fault indicator, a data collector and a main controller. The digital fault indicator is used for detecting real-time data of the electric power circuit and outputting state information of the electric power circuit according to the real-time data. The data collector and the digital fault indicator form a communication network through short-distance wireless modulation, and the data collector is used for collecting the state information sent by the digital fault indicator and turning the state information into a data packet. The main controller is used for receiving the data packet sent by the data collector and judging fault points and types according to information in the data packet. The electric power circuit fault detecting system can achieve remote alarming of the electric power circuit faults and detecting of various electric power circuit faults.

The invention provides a fault detection technology of a Solaris system, and a Solaris operating system fault is rapidly processed and a fault point is rapidly positioned through mandatory access control by the technology. Compared with a traditional minimum authority model safety measure, the technology for detecting the system fault by utilizing the mandatory access control rapidly detects and positions the fault caused by an attack for the Solaris system, including a known or unknown virus program, an ROOTKIT-level backdoor Trojan horse and the like. The mandatory access control (MAC) is divided into two parts: one part is the access control for a document on the basis of a user, the other part is the access control for the document on the basis of a process, and the user is bound when the process operates, so that the process per se is also a subject, and when an object is protected by a safety mark, even a root user can not access the object unless having the authority of the MAC.

The invention discloses a traffic light fault intelligent detection device and a detection method thereof. The device comprises a crossroad detection terminal and a fault detection alarm server, the fault detection alarm server is used for receiving information of the crossroad detection terminal, the crossroad detection terminal comprises a traffic signal detection module, a voltage sensor, a current sensor, a signal machine state detection module, a controller and a communication module, an input end of the traffic signal detection module is connected with a traffic signal control system anda crossroad traffic signal machine, an output end of the traffic signal detection module is connected with a crossroad traffic light, the voltage sensor is used for detecting system voltage, the current sensor is used for detecting system current, the signal machine state detection module is used for detecting a signal machine state, the controller is used for receiving and processing informationof the traffic signal detection module, the voltage sensor, the current sensor and the signal machine state detection module, the communication module is used for transmitting processed information to the server, the fault detection alarm server comprises an information notification module and a client, the client is used for receiving information notifications, the detection device is comprehensive in detection, multifaceted personnel monitoring is facilitated, detection accuracy is ensured by the detection method, and false alarm rate and missing report rate are further reduced.

The invention relates to an electric kettle for heating water whereby the kettle has an electric heating element with an electronic regulator which detects the temperature and the duration of heating via sensors. The kettle comprises a non volatile electronic memory wherein predefined characteristic data is stored for verifying the sensor information. The invention also relates to a method for regulating a heating process for a kettle of said type, comprising the following steps: switching on a heating element; measuring the increase in temperature DELTA T at a predetermined time interval ttot-to; switching off the heating element if the measured temperature increase DELTA T is less than or equal to Tmin; measuring the temperature T at the time tmax; switching off the heating element if the measured temperature Ttmax is greater than the stored temperature Tmax; regular completion of the heating process. The invention enables a simple and secure detection of and response to an error function occurring in the heating element or the electronic regulator in the electric kettle.

The invention provides a carbon dioxide laser power supply which comprises a power supply unit for transforming power distribution of a factory so as to supply power to a carbon dioxide laser, a laser fault detecting unit for detecting faults of the carbon dioxide laser and a control processing unit. When the laser fault detecting unit detects the faults of the carbon dioxide laser, output of the carbon dioxide laser power supply is cut off according to a detecting result of the laser fault detecting unit.

The invention provides a refrigerating equipment defrosting control method and a device and refrigerating equipment with the device. The method comprises the following steps: an acquiring step: evaporator images are acquired under illuminating conditions; a judging step: the evaporator frost quantity is judged according to the acquired evaporator images; and a defrosting step: a defrosting heater is controlled to start or stop defrosting according to the evaporator frost quantity. On the basis of accurately judging the evaporator frost quantity, the accurate defrosting of an evaporator is realized, and the cost is low; and in addition, when the refrigerating equipment is primarily electrified, the evaporator faults can be detected.

The invention discloses a server state monitoring method and system, and the method comprises the steps: detecting the color change condition of a front panel indicating lamp of a server in a cabinetthrough a detection module; determining whether an indicating lamp with abnormal flickering exists or not according to the color change condition of a front panel indicating lamp of the server in thecabinet; if yes, determining the position of an indicating lamp with abnormal flickering and the position of a corresponding server according to preset relevant parameters of the server, wherein the relevant parameters of the server comprise the brand model of the server, the number of the servers and the arrangement position of a detection module; and determining a fault server and a fault type according to the position of the indicating lamp and the corresponding server position. The method can accurately reflect server faults in real time, can automatically inform related personnel, and hasthe advantages of high accuracy, real-time feedback and low maintenance cost.

The invention relates to an automatic monitoring and fault positioning system of a single-fiber three-way multiplexer, which comprises a first sampling circuit, a second sampling circuit, a third sampling circuit and a fourth sampling circuit, wherein the first sampling circuit is used for sampling an optical signal at the front end of the detected single-fiber three-way multiplexer, and the second sampling circuit, the third sampling circuit and the fourth sampling circuit are respectively used for sampling signals with the wavelengths of 1550nm, 1490nm and 1310nm at the rear end of the detected single-fiber three-way multiplexer; the first to the fourth sampling circuits are connected with a central controller, and the central controller is used for reading the numerical value of each sampling circuit and finishing the judging and positioning working of faults. The fault of the single-fiber three-way multiplexer can be detected in real time.

The invention provides a mutual detection positioning system, a mutual detection positioning method and a plug-in system, wherein the mutual detection positioning system comprises a stepping motor, arotary raster encoder and a controller, wherein the stepping motor is installed on a worktable, the rotary raster encoder is fixedly connected with a power output end of the stepping motor, the controller is connected with the stepping motor and the rotary raster encoder through circuits, and the controller is used for comparing the pulse number N1 of driving signals input to the stepping motor and the pulse number N2 of output signals of the rotary raster encoder and judging the working condition of the stepping motor, so as to recognize the working condition of a puller installed in the worktable through the transmission of the stepping motor. The embodiment of the invention can recognize the current state of the puller, and can also detect the faults of the system.

The invention discloses a low-voltage circuit breaker. The low-voltage circuit breaker comprises a shell, a contract system which is connected with a circuit, a tripping mechanism which drives the contact system to break the circuit and an arc-extinguishing device which conducts arc extinguishing on the contact system, the tripping mechanism comprises a circuit module which detects circuit faults and an operation module which drives the contact system to break the circuit, the operation module comprises an electromagnetic component and an action component, the electromagnetic component is connected with the circuit module in a coupled mode, and when the circuit breaker is tripped, the circuit module drives the electromagnetic component to drive the action system to make the contact system break the circuit. According to the low-voltage circuit breaker, by means of the arrangement of the circuit module, the circuit faults can be effectively detected; by means of the the arrangement of the electromagnetic component and the action component, when the circuit module detects the circuit faults, the electromagnetic component and the action component can effectively drive the contact system to break the circuit, and the influences of the environment and the temperature do not exist.

The invention relates to an elevator control system which can detect a speed monitor control device fault by an easier structure. The speed monitor control device respectively outputs a speed information signal, when an elevator speed operated by the output signal of a first speed detector reaches a first speed below a rated speed, and reaches a second speed below the rated speed and faster than the first speed. In addition, the elevator control device detects the abnormity of the first speed detector according to the speed information signal and the elevator speed operated by the elevator control device according to the output signal of the second speed detector.

The invention provides a method for evaluating path congestion of a Clos network, which accurately judges the path congestion degree by utilizing RTT and ECN signals and combining the advantages of the RTT and ECN signals. Compared with TTL, RTT, ACK or the method for judging path congestion by transformation trend thereof, the technical scheme provided by the invention reduces misjudgment and canprovide more detailed path state display. On this basis, the invention also provides a method for evaluating a path state, a method for comparing a path congestion degree and a load balancing methodbased on the above.