74 results about "Alarm Failure" patented technology

To eliminate the drawbacks of false alarm problems due to mimic flame features of sunlight or moonlight reflecting on wave or mimic flame features of fabrics, animals or stage flames and alarm failures of methanol or ethanol burning flames or flames under a high illumination background condition, a multi-wavelength video image fire detecting system is disclosed consisting of a multi-wavelength video image fire detector, which is comprised of a color and near IR dual-mode camera, a color and B / W dual-mode camera, an image capture module, a processor and controller, an I / O module, a housing and a visible light and near IR view window, an alarm and indicate equipment, a setting and debugging system, a communication equipment, an area alarm and monitor system, and a pan & title and control system.

The invention discloses an intelligent anti-lost system and method. The system comprises an anti-lost device, a Bluetooth communication module, an alarm module, a Wi-Fi module, a button battery and a central controller. The Bluetooth communication module, the alarm module, the Wi-Fi module, the button battery and the central controller are all arranged on the anti-lost device. The anti-lost device is connected and communicated with a mobile terminal through a communication protocol. In a short-distance monitoring condition, only a low-power Bluetooth working mode is started, and in a long-distance monitoring condition, the low-power Bluetooth working mode is preferentially started, and a Wi-Fi working mode is started when the Bluetooth communication range is exceeded or false alarms and alarm failure occur due to unstable signals, so that power is saved and the service life of equipment is prolonged, the effective distance of monitoring is increased, and the anti-lost device in a safe distance can be effectively and accurately monitored. In addition, when a distance between a mobile phone and the anti-lost device is beyond the safe distance, the alarming of the anti-lost device and the mobile phone end is supported at the same time, and the mentioned bidirectional alarm mechanism can comprehensively inform a user.

The invention relates to a method and device for flexibly identifying residual current-type electrical fire on line. The method comprises the following steps: arranging a residual current mutual inductor in a power transmission and supply circuit of a low-voltage power distribution system; obtaining an instantaneous value irz of lumped residual current in the circuit as well as waveform which areacquired by the mutual inductor through a power supply branch residual current and other signal detection unit; and according to the characteristics such as abrupt change, discontinuity and nonlinearity of a spot-heat agglomeration residual current instantaneous value ird, separating and extracting ird from irz by adopting a modern information processing technology, and calculating an effective value Ird of ird so as to identify whether potential electrical fire danger exists according to the size of Ird. The on-line identification device consists of three parts such as a residual current signal processing unit, the power supply branch residual current and other signal detection unit and an output execution unit. By adopting the residual current-type flexible on-line electrical fire identification method and device, the features of the potential electrical fire danger caused by electric arc grounding faults can be accurately extracted, normal residual current and abnormal residual current can be correctly identified, and alarm failure and false alarm can be avoided.

To eliminate the drawbacks of false alarm problems due to mimic flame features of sunlight or moonlight reflecting on wave or mimic flame features of fabrics, animals or stage flames and alarm failures of methanol or ethanol burning flames or flames under a high illumination background condition, a multi-wavelength video image fire detecting system is disclosed consisting of a multi-wavelength video image fire detector, which is comprised of a color and near IR dual-mode camera, a color and B / W dual-mode camera, an image capture module, a processor and controller, an I / O module, a housing and a visible light and near IR view window, an alarm and indicate equipment, a setting and debugging system, a communication equipment, an area alarm and monitor system, and a pan & title and control system.

The invention relates to an alarm threshold value adaptive method for a distributed optical fiber temperature sensor, and belongs to the technical field of optical fiber sensing. The method includes: utilizing a DTS (digital transmission system) mainframe to control a light source to send out periodic light pulse to enter a sensing optical fiber, collecting Stokes signals and anti-Stokes signals of backward Raman scattering, calculating temperature distribution of the sensing optical fiber according to temperature of a reference optical fiber ring inside the mainframe, and calculating an alarm threshold value according to ambient temperature curve function. The alarm threshold value is automatically adjusted according to temperature of external environment, so that problems of false alarm and alarm failure of conventional single threshold value are solved, system adaptability is improved, and system reliability is improved.

The invention discloses a method for detecting leakage of a pipeline of a tank farm by combining the statistical hypothesis testing technology and the pattern recognition technology. The method comprises the steps that measuring meter data and actuator state feedback information of a working site are acquired through a tank farm monitoring system, an oil transportation path is determined, and Kalman filtering is carried out on pressure measuring meter data to generate pressure information; whether the pressure of the pipeline exceeds a limit is detected according to the multi-sequential probability ratio test, and if yes, an over-limit pressure sequence and the multidimensional time domain features of the over-limit pressure sequence are extracted; recognition of leakage of the pipeline and adjustment of working conditions are carried out based on an established neural network leakage recognition model. By means of the method, a small change of the pressure of the pipeline can be detected in the least time within a regulated false alarm rate and a regulated alarm failure rate, and then whether leakage of the pipeline occurs can be determined.

The invention discloses a rapid nondestructive charging method of a power-driven light automobile and a charger, and belongs to the technical field of power-driven automobile charging. The rapid nondestructive charging method is characterized by comprising the following steps: step 1001, starting; step 1002, initializing hardware; step 1003, detecting whether a battery pack and the charger are matched; step 1004, alarming failure; step 1005, detecting whether a quick charging mode is carried out; step 1006, charging not quickly; step 1007, charging quickly; and step 1008, charging completely. The charger comprises a soft start protective module, an input rectification filtration module, an auxiliary power supply module, an insulation driving module, a charge control module, a power output module, an output rectification filtration module, an output opposite connection protection module and an output parameter sampling module. According to the invention, based on a slow impulse nondestructive quick charging technique, quick charging is realized, meanwhile the battery pack is nondestructive, and the service life of the storage battery pack is prolonged.

The invention relates to a wind pipe smoke-sensing fire detector, belonging to the technical field of fire detection. The detector structurally comprises a shell, an airflow sampling pipe, a an airflow discharging pipe, a smoke optical detecting room, an infrared photoelectricity detecting circuit, a low-resistance signal sampling amplifying circuit, a signal processing circuit, a time delay trouble signal output circuit, a signal output and display circuit and an electric source conversation circuit. The detector can improve the distinguishing and identifying capability of interference signals, thereby correspondingly reducing the false alarm rate and avoiding the alarm failure of fire information, guaranteeing the flowability of the airflow in an airflow detecting cavity and reducing the influence of a circulation region, and leading the flow field near the smoke optical detecting room to be uniform.

The invention discloses an electroencephalogram-based wearable anti-fatigue intelligent monitoring and pre-warning system for a driver. The electroencephalogram-based wearable anti-fatigue intelligent monitoring and pre-warning system is characterized in that when a driver drives, self-developed wearable electroencephalogram detecting equipment is used to detect the electroencephalogram features of the driver, a specific fatigue algorithm is provided, whether the driver is in a fatigue state or not or has a fatigue trend or not is monitored precisely in real time, timely pre-warning can be performed, and traffic accidents caused by fatigue driving can be prevented effectively. The system has the advantages that the system is high in precision, good in timeliness, capable of effectively preventing the traffic accidents caused by the fatigue driving, high in practicality and promising in prospect; the used wearable cap structure is small in size, easy to wear and free of influence on the daily driving operation of the driver; the used electrode structure does not need to use the earlobe as the reference voltage, the driver does not need to wear an ear clip on the ear, and discomfort is avoided; false alarm and alarm failure are reduced effectively by the specific fatigue algorithm.

The invention discloses an automatic alarm method and device and a mobile terminal, and belongs to the technical field of computers. The automatic alarm method comprises the steps that sound signals are acquired via a microphone; whether the contents of the sound signals include key information corresponding to abnormal sound signals is detected; and if the detection result shows that the contents of the sound signals include the key information corresponding to the abnormal sound signals, alarm information is directly pushed, and the alarm information includes the contents of the sound signals. The alarm information is directly pushed when the detection shows that the contents of the sound signals acquired by the microphone include the key information corresponding to the abnormal sound signals so that problems in the related technologies that alarm failure is liable to be generated in manual dialing of users when alarming is performed by using the mobile terminal can be solved, and the effect of automatic alarm can be realized without user operation.

The invention provides an on-line state monitoring and failure diagnosing method of a wind turbine generator set. The on-line state monitoring and failure diagnosing method comprises the following steps: adopting an unscented Kalman method for processing SCADA data serving as the state variables, input quantity and measuring quantity to acquire the current predicted value of the state variables; calculating the difference value between the current predicted value of the state variables and the measured value of the state variables in the SCADA data to serve as a first difference value; and when the first difference value exceeds the threshold value, judging that the current alarm failure needs to be handled. According to the on-line state monitoring and failure diagnosing method of the wind turbine generator set, the data collection quantity is small, failures of the wind turbine generator set can be detected on line and in real time, the reliability is high, and the operating cost is low.

The invention provides an alarm management method and system for a content distribution network. The method comprises the steps of acquiring the access log of each node server operating in the content distribution network; extracting alarm records from the content of the access logs, and representing the alarm records as one or more character fields and character field information corresponding to the character fields to serve as alarm feature information; establishing a screening condition related to the alarm feature information and storing the screening condition, wherein the screening condition comprises one or more preset fields used for being compared with the one or more character fields and the character field information corresponding to the character fields, and preset field information corresponding to the preset fields. By the adoption of the method and system, a large number of alarm records can be processed automatically, useful alarms are screened out in a targeted mode, and alarm failure checking difficulty is reduced.

The invention discloses a system and a method for monitoring outdoor power equipment in real time. The system comprises field monitoring equipment, a micro controller, an alarm module, a remote wireless GPRS module, a monitoring center and a GSM module. According to the system and the method, the power equipment can be detected in a full-coverage and partitioning way, preventive measures are taken, and the loss caused by a fault is effectively reduced; video image detection and partial discharge detection can be combined, visualization and intelligence are achieved, the position and the reason of the fault can be found in time, the power equipment can be remotely monitored, and special requirements on state monitoring and equipment maintenance of the power equipment are met; when the fault occurs, an alarm can be automatically given, staff can be informed in time through short messages, false alarm and alarm failure are avoided, and the effects of great convenience and quickness are achieved.

A physiological parameter processing method includes acquiring a main physiological signal, and analyzing the main physiological signal to acquire the signal quality indexes of the main physiological signal; acquiring auxiliary physiological signals, and analyzing the auxiliary physiological signals to acquire the signal quality indexes of the auxiliary physiological signals; controlling the physiological parameter acquiring process by processing the main physiological signal according to the signal quality indexes of the main physiological signal and the signal quality indexes of the auxiliary physiological signals; outputting the physiological parameters. The physiological parameter processing method has the advantages that the auxiliary physiological signals are utilized to assist with main physiological signal processing, the information source is expanded as compared with that of a processing manner relying on one single physiological signal, especially when the signal quality of the single physiological signal is poor, and the false alarms and alarm failures can be avoided by the aid of the auxiliary physiological signals; in addition, the invention further provides a physiological parameter processing system and monitoring equipment adopting the physiological parameter processing method and system.

The invention relates to the field of biological signal monitoring, and provides an alarm management method, an alarm management device and a supervision device. The alarm management method comprises the following steps of: 1, establishing an alarm pool comprising a plurality of nodes, wherein each node comprises a storage part for storing alarm information and a pointer part for storing an address; 2, setting an alarm chain for mounting the nodes storing the alarm information, wherein the alarm chain comprises a first pointer for storing the address of a first mounted node; and 3, when alarm information is received, selecting a node from the alarm pool by using the processor, storing the alarm information into the storage part of the node, and mounting the node in the alarm chain. According to the alarm management method, the limitation of subdivision is avoided, and the alarm chain can be randomly allocated to the nodes in the alarm pool according to needs, so that alarm failure risks when the alarm information is generated in a centralized way are greatly reduced.

The invention discloses an alarm method for a power grid system. The alarm method comprises the steps: obtaining operation security type data, operation economic type data, operation quality type data and operation environment-protection type data in operation data of the power grid system; calculating security type monitoring indexes, economic type monitoring indexes, quality type monitoring indexes and environment-protection type monitoring indexes of the power grid system; and comparing all the monitoring indexes with corresponding preset thresholds respectively, and for the monitoring indexes which exceed the corresponding thresholds, giving out corresponding alarm signals. In addition, the invention discloses an alarm device for the power grid system. The alarm signals can comprise a pre-warning signal and an alert signal. An index system for monitoring the power grid system by using an alarm mode is established, so the power grid system can be monitored completely and systematically in the aspects of security, economic performance, quality and environment protection. The alarm paths are clear, and false alarm and alarm failure cannot occur.

The invention discloses an intelligent information fusion image type fire hazard detector comprising an outer shield, an optical lens and imaging assembly, and a video image and information fusion assembly; the optical lens and imaging assembly is connected with the video image and information fusion assembly, and both are arranged in the outer shield; the optical lens and imaging assembly sends shot image information to the video image and information fusion assembly so as to carry out information fusion calculation, thereby outputting detection results. The invention also discloses a detection information fusion method of the image type fire hazard detector; the image type fire hazard detector has high sensitivity, can realize early detection of the fire hazard, is excellent in accuracy, very low in false alarm rate, good in environment adaptability, and can stably and reliably operate; the detection information fusion method of the fire hazard detector is based on the intelligent information fusion method, can maximumly reduce false alarms and alarm failure phenomenon, thereby effectively improving accuracy and reliability of the image type fire hazard detector.

The invention discloses a testing device applied to the fields of the reliability of numerically-controlled machine tool chip removing devices and relates to a reliability testing table for multistage tandem chip removing devices. The reliability testing table is mainly composed of a circulating chip removing mechanism, a state detection alarm mechanism and a speed changing automatic control mechanism. The circulating chip removing mechanism is composed of a supporting frame fixed on horizontal iron, more than two chip removing devices fixed on the horizontal iron or the supporting frame, and a chip collecting device fixed on the supporting frame. The state detection alarm mechanism is composed of a light curtain sensor, a vibration sensor, an A / D card and a signal amplifier. The speed changing automatic control mechanism is composed of an upper industrial control computer, a lower programmable logic controller (PLC), a frequency changer, a control cabinet and a control panel arranged in the control cabinet. The reliability testing table for the multistage tandem chip removing devices can simulate different working conditions, is capable of alarming failures, can conduct reliability loading tests on chip removing devices different in model and number as long as an installing part is adjusted, and has flexibility and universality.

The invention relates to a pulse electronic fence contact alarm system and a detection method. The alarm system comprises a host control module, a contact alarm device, a contact alarm detection device, a high-voltage pulse emission device and a high-voltage pulse detection device. The host control module controls net contact alarm signals generated by the contact alarm device and high-voltage pulse signals generated by the high-voltage pulse emission device and the host control module analyzes and judges the net contact alarm signals and the high-voltage pulse signals, wherein the signals are transmitted through a pulse electronic fence and detected by the detection device. The method includes the steps that high-voltage signals and the net contact alarm signals of the electronic fence are detected so as to be acquired through the detection device; output high voltage signals and net contact voltage signals are amplified; the amplified high voltage signals and the amplified net contact voltage signals are converted into digital signals for analysis and judgment. According to the system and method, the net contact alarm signals and the high-voltage pulse signals are combined, so that the technical problems of alarm failure of single line contact, bridging and the bypass in a pulse electronic fence system are solved.

The invention discloses a liquid level display and automatic oil supply device for an elevated oil tank. The liquid level display and automatic oil supply device comprises a floor oil tank and the elevated oil tank. Both the floor oil tank and the elevated oil tank are electrically connected with a control system used for controlling the floor oil tank to inject oil into the elevated oil tank at the same time. The control system comprises a manual operation part and an automatic operation part, and the two parts can work simultaneously. When alarm failures happen to the automatic operation part and repair cannot be realized, the manual operation part can be used for control. According to the liquid level display and automatic oil supply device, automatic oil supply can be achieved through the automatic operation part of the control system. By means of the device, the labor intensity of workers in a machine room is relieved, hidden dangers caused by an upper elevated tank and a lower elevated tank are eliminated, reliability and stability of oil supply are improved, and normal operation of a diesel engine and normal production are guaranteed.

The invention provides a real-time early warning system for internal environment of high-voltage cable branch boxes. An inducting energy obtaining power source, a smell sensor, a smoke sensor and a monitoring device are arranged in each branch box, wherein the inducting energy obtaining power source, the smell sensor and the smoke sensor are connected with monitoring devices, and the monitoring devices are connected with an upper computer or mobile monitoring equipment by means of wireless communication. According to the early warning system, the smell sensors and the smoke sensors are adopted for monitoring the internal environment of the high-voltage cable branch boxes in real time, concentration of smells and smoke serves as a criterion for early warning of cable connector faults in the branch boxes, equipment cost is low, installing and using are convenient, a threshold value can be adjusted according to actual conditions, false alarms and alarm failure can be avoided by means of double monitoring over the smells and the smoke, and the system is suitable for power supply and distribution networks in large and medium cities, and particularly suitable for real-time early warning of the high-voltage cable branch boxes in the complex environment with heavy external smoke, or varied external smells or haze.

The invention discloses an effective grounding three-phase insulated electrical fire online prevention and control device and method. The prevention and control device of the invention includes a DSPunit, a single chip microcomputer module, a photoelectric coupler module, an alarm unit, a control output unit, an Ethernet communication unit, a reset circuit module, a residual current signal detection module, a residual current signal conditioning circuit module, a voltage signal detection module and a voltage signal conditioning circuit module. According to the prevention and control method ofthe invention, the prevention and control device is used to decompose and restore the lumped residual current of the power supply circuit of an effective grounding three-phase AC distribution systemto all the phases, extract the resistive residual current component of each phase which truly characterizes the insulation characteristic and further calculate the resistive insulation resistance of each phase to ground. Thus, the insulation performance and potential electrical fire danger of the power supply circuit of the effective grounding three-phase AC distribution system are monitored online, and grounding short circuit faults and electrical fire accidents are prevented. The method of the invention can overcome the defects of conventional methods, such as false alarm, alarm failure andincapability of online detection.

The invention discloses an intelligent multi-parameter remote emergency call monitoring system, which comprises a wireless emergency call button, a sensor module, a linkage module and a call center module, wherein the wireless emergency call button comprises an internet-of-things system which comprises an intelligent analytical algorithm module, and the intelligent analytical algorithm module is connected with a multi-parameter sensor access module, a telephone module, a wire or wireless broadband module, a 2G or 3G module, an alarm lamp and horn module, a lithium module and a wireless receiving module; the sensor module is connected with the multi-parameter sensor access module; and the call center module is connected with the telephone module, the wire or wireless broadband module, the 2G or 3G module and the linkage module respectively. The monitoring system of the invention can provide a reliable uploading communication link for data about illness states, warning signals, fires and the like and reduce misinformation, misstatement and alarm failure of the data about the illness states, warning signals, fires and the like as much as possible at the same time.

The invention discloses a server box opening / closing alarm device, system and method, and relates to the field of server safety, the device comprises a light touch micro switch and an abutting member,the light touch micro switch is installed on a backboard, and the pressing direction of an arm rod of the light touch micro switch is a horizontal direction; The abutting member is mounted below an upper cover of a case of the server; The system comprises a backboard controller, a box opening alarm device and a baseboard management controller (BMC); when an upper cover of a case of a server is closed, the abutting member presses an arm rod, a slight touch switch is switched on, and an input / output end of the backboard controller detects a low level and reports the low level to the BMC; When the upper cover of the case of the server is opened, the abutting member leaves the arm rod, the switch is slightly triggered to be switched off, and the input / output end detects a high level and reports the high level to the BMC; And when the level of the BMC changes, a server box opening / closing alarm is generated. According to the invention, the light touch microswitch is prevented from being damaged by stress in the horizontal direction, the risk of server box opening / closing alarm failure is reduced, and the reliability of server box opening / closing alarm is improved.

The invention discloses a real-time monitoring and automatic regulating system of automotive brake clearance, comprising a brake clearance sensor, a brake system working condition sensor, a brake system working condition sensor, an electrical control unit (ECU), a terminal display device, an electric adjusting arm, wherein, the brake clearance sensor is arranged on a brake shoe component of a drum-type cam brake; the brake system working condition sensor is arranged on an air braking main valve; the ECU is used for collecting and processing brake clearance of each brake; the terminal display device is used for displaying brake clearance value in real time and setting preset clearance and alarming failure; the electric adjusting arm is used for automatically adjusting the execution mechanism of brake clearance; and a signal transmission line of the ECU is used for connection. The system of the invention real-time monitors and intensively displays the brake clearance of each brake in the traveling process of the automobile, can realize feedback bidirectional regulation and failure alarm of the brake clearance, and timely find and reduce potential safety hazard caused by unreasonable brake clearance; and the preset clearance of each brake is set by terminal display equipment, thus the operation is more convenient. The system of the invention has simple structure, small volume and lower cost and is more reliable.

The invention provides a lubricating oil secondary cooling system for a wind power gear box, and relates to a cooling technology for the field of wind power generation, in particular to a cooling system for lubricating oil of a wind power gear box system. The lubricating oil secondary cooling system comprises a primary cooling system and a secondary cooling system. The secondary cooling system is a water cooling circulating system, and the secondary cooling system is connected with a water inlet and a water outlet of a plate type cooler to secondarily cool the lubricating oil. A water inlet of a natural air cooling plate of the secondary cooling system is connected with the water outlet of the plate type cooler, and a water outlet of the natural air cooling plate is connected with a suction opening of a water pump. A water outlet of the water pump is connected with the water inlet of the plate type cooler. An expansion tank is connected with an overflow opening of the water pump. A charging ball valve, a safety valve, a pressure switch II, a pressure meter II and an exhaust valve are connected with the expansion tank through valve blocks. The lubricating oil secondary cooling system has the advantages that high-temperature alarm failures, caused by blockage of oil dirt, catkins and the like, of a gear box air cooler are fundamentally solved, the structure is novel, installation and use are easy, the refrigeration effect is good, energy is saved, and the operating cost is reduced.

The invention relates to a novel intelligent quilt, which comprises a quilt body for monitoring management, a plurality of sensor groups in matrix distribution for monitoring management arranged on the quilt body for monitoring management at one side in contact with a human body, and a central processor for monitoring management connected with each sensor group for monitoring management through a wire, wherein each sensor group for monitoring management comprises an internal temperature sensor for monitoring management connected with the central processor for monitoring management, a humidity sensor for monitoring management, and a multi-axis sensor for monitoring management capable of measuring relative motion direction and motion track between the quilt body and a covered object. The sensor groups are arranged on the quilt in a matrix form; each sensor group collects temperature, humidity and position and motion track data with a certain radius range; and a plurality of sensor units can collect the whole area covered with a quilt core in general and a data collection dead angle does not exist, so that the alarm failure condition is not generated basically.

The invention relates to a method for realizing a WYSIWYG video safety guard, which is characterized by comprising the following steps: firstly, connecting a camera with a safety guard video terminal provided with an embedded microprocessor; secondly, displaying real-time pictures captured by the camera of a computer connected with the safety guard video terminal on a display of the computer; thirdly, using a mouse to set the real-time pictures displayed by the display; fourthly, brightening (Y+40), darkening (Y-40) or inversing (256-Y) local real-time image pixels which are corresponding to basic unit picture segments on the display of the computer; and fifthly, detecting set regions by the safety guard video terminal, and subtracting the gray values or the color values of pixels in the set regions of a front frame and a back frame to get the absolute accumulated sum so as to compare the absolute accumulated sum with a set threshold value for judgement. The method realizes the visualization set for a detecting region of a moving object in domestic safety guard products, can reduce false alarms or alarm failures, and has the advantages of wide application and easy implementation.

The invention relates to a high-voltage power cable fault alarm device, which includes three fault detection terminals and a fault alarm host. Detect phase-to-phase short-circuit faults; the fault alarm host is installed on the panel of the high-voltage power cable grounding box, and the three input terminals of the fault alarm host are connected to the output terminals of the three fault detection terminals to receive and display fault alarms transmitted by each fault detection terminal information. The design of the invention is reasonable, the fault detection terminal can automatically detect the phase-to-phase short circuit fault of the high-voltage power cable and realize the alarm function through the fault alarm host, and the device can be installed in each group of cross interconnection sections to accurately determine the cable fault to a certain cross In the interconnection section, it provides a reliable basis for cable fault query, improves the efficiency of fault repair, greatly shortens the power outage time, and has the characteristics of fast, accurate, safe, and convenient.

The disclosure relates to a processing method and apparatus for a clock alarm failure. The method comprises: when a clock alarm failure occurs, a preset informed contact and preset notice information that correspond to an alarm clock are obtained; and the preset informed contact is informed of the preset notice information. Therefore, the preset informed contact can obtain the preset notice information; and thus a phenomenon that a user misses an important thing like being late for work because the user does not hear warning sound for an alarm clock can be avoid.