46results about How to "Reduce the chance of false alarms" patented technology

The invention discloses an acceleration-detection-based calling alarm method and an acceleration-detection-based calling alarm system, and calling alarm equipment. The method comprises the following steps that: the calling alarm equipment detects a first acceleration of falling, and detects whether a user moves in first movement time when the first acceleration reaches a predetermined acceleration threshold; when detecting that the user does not move in the first movement time, the calling alarm equipment plays an interaction voice, and waits for response of the user to the interaction voice; and when the user does not respond to the interaction voice, the calling alarm equipment re-detects whether the user moves in second movement time, and sends an alarm signal to a predetermined alarm number when detecting that the user does not move in the second movement time. By the invention, the problem of high false alarm probability of the conventional calling alarm equipment is solved, the practical situation when an emergency occurs can be accurately judged, the accuracy of calling alarm is improved, and the probability of false alarm is greatly reduced.

The present disclosure relates to a vehicle impact mitigation system. The impact mitigation system can be configured to mitigate front impact situations. A main rail and an extendable rail-configured to move with respect to the main rail-are provided. A front module is attached to the extendable rail and attachable to the main rail. A spring is positioned between the front module and main rail, the spring is configured to apply a force to the front module when the front module is detached from the main rail. An actuator is configured to control attachment of the front module to the main rail.

The invention discloses a spaceflight transmission mechanism analysis method based on fault data, and the method comprises the following steps: S1, collecting data, collecting the rotating speeds of an inner rotor and an outer rotor of an aero-engine, generating two key phase signals, and triggering the sampling of corresponding vibration point measurement points; S2, performing data storage: during online monitoring, dividing the set databases into a configuration database and a unit database, wherein each transmission mechanism corresponds to one unit database, and the configuration databasestores related configuration information; S3, monitoring and analyzing: comprehensively monitoring and analyzing the vibration signal of the transmission mechanism in two modes of real-time monitoring and historical query; S4, performing fault diagnosis, including a, detecting and analyzing data feature extraction; b, establishing a database; c, layering the new data set; d, obtaining a new datafault diagnosis result; S5, performing the fault management: after a diagnosis result is obtained, giving the reasons and solutions of all faults, and giving the corresponding maintenance suggestionsaccording to the fault types. The system is reasonable in method and high in reliability.

The invention discloses a product promotion channel supervision method and system. The method comprises the following steps of: establishing a channel standard portrait according to data, collected ina first set time period, of each channel; establishing a portrait of a to-be-detected channel according to data, collected in a second set time period, of the to-be-detected channel; and comparing the portrait of the to-be-detected channel with the channel standard portrait, and when the comparison result indicates that the difference is greater than a set first threshold value or the similarityis lower than a set second threshold value, determining the to-be-detected channel as a problem channel. According to the method and system, the efficiency of distinguishing problem channels can be enhanced and the false alarm probability can be reduced.

The invention provides an intelligent lead switching method and device based on respiration parameters. The intelligent lead switching method comprises the following steps: S1, acquiring a respiration signal according to an acquired physiologic signal; S2, judging whether the quality of a signal corresponding to the respiration signal meets the lead switching condition, if yes, turning to S3 and if no, turning to S4; S3, triggering a lead switching command; and S4, keeping the present lead, wherein in S1, an electrocardio lead line acquires the respiration signal by one channel at the same moment. The intelligent lead switching method and device based on respiration parameters can effectively improve the respiratory coefficient calculation accuracy, and meanwhile, can reduce respiration-related false alarms, and ensure that the overall performance of a monitor which utilizes the impedance method to measure the respiration parameters is effectively improved.

The embodiment of the invention relates to the field of power batteries, in particular to a power battery temperature monitoring method and device, a vehicle and a storage medium, and the method comprises the steps: obtaining a difference value delta(T) between the highest battery cell temperature Tmax and the lowest battery cell temperature Tmin in a power battery system according to a preset period; judging whether the difference value delta(T) meets a difference value alarm condition or not; when the difference value delta(T) meets a difference value alarm condition, obtaining a temperaturerise value Tu of the Tmax; judging whether a temperature rise value alarm condition is met or not according to the temperature rise value Tu and a preset temperature rise value threshold T2; when thetemperature rise value alarm condition is met, carrying out the temperature rise value condition alarm. According to the power battery temperature monitoring method provided by the embodiment of theinvention, whether the temperature of the power battery is abnormal or not can be judged in advance by continuously monitoring the temperature of the power battery, and various damages caused by abnormal judgment only when the temperature is too high are prevented. Through the two-stage judgment mode, the judgment result can be more accurate, the probability of false alarm is reduced, and the alarm accuracy is improved.

The invention provides a poisonous gas alarm. The alarm includes a sensor sensing content of poisonous gas, a timing module for timing, a microprocessor having least square method predication function, and a vision alarm module and an auditory alarm module sending alarm to operators according to indexes such as poisonous gas content change values, out-of-limit time points and the like. The invention solves a problem of time lag of a prior alarm. The alarm response speed and risk vigilance of people can be improved substantially. Human health damage is also reduced greatly by the early alarm function. Besides, due to the application of the least square method, error alarm possibility is reduced since the alarm has the predication function, so that the predication accuracy of the alarm is improved greatly.

The invention relates to a vibration reduction type new energy battery with a leakage alarm function. The vibration reduction type new energy battery comprises a main body, and further comprises an alarm mechanism and a vibration reduction mechanism, wherein the alarm mechanism comprises a detection tube, a piston block, a fixed rod, a supporting sleeve, a transmission rod, a second spring, a first contact, a second contact and a time delay assembly; the vibration reduction mechanism comprises a mounting plate and at least two buffering assemblies, wherein each buffering assembly comprises a supporting rod, a lifting sleeve and two first springs; and the time delay assembly comprises an oil cylinder, an oil conveying pipe, a one-way valve, a piston plate and an oil conveying hole. According to the vibration reduction type new energy battery with the leakage alarm function, the leakage state of a fuel cell can be detected through the alarm mechanism, and then an alarm signal is sent toan operator, so that the operator can carry out treatment in time, and the probability of major accidents is lowered; and by means of the vibration reduction mechanism, the impact force borne by the fuel cell in the running process of a vehicle is reduced, and the probability that the fuel cell is damaged is lowered.

The invention discloses a device for monitoring the leakage of an underground gas pipeline, which comprises: a gas pipeline monitoring pipe arranged above the pipeline to be monitored; side plates respectively arranged on both sides of the monitoring pipe; a valve arranged at the right end of the monitoring pipe; The gas monitor at the left end of the monitoring pipe; the suction pump arranged at the left end of the gas monitor; the pipelines arranged at both ends of the monitoring tube, which are used to connect the valve, the monitoring tube, the gas monitor and the suction pump into one Gas circuit; it has an information processing module that controls monitors, suction pumps and valves, and the information processing module includes a signal transmitter and a processor. The invention solves the technical problem that the gas pipeline monitoring device in the prior art has low precision, large error and cannot accurately reflect the leakage situation of the pipeline.

The invention discloses a vibration monitoring device of a wind turbine generator and a control method, and is characterized in that the vibration monitoring device comprises a vibration detection module, a vibration monitoring module and an upper computer; the vibration detection module is composed of an LPC2119 microcontroller, a power supply module, a first CAN interface module, a storage module and an MEMS acceleration sensor; and the vibration monitoring module is composed of a second CAN interface module, an MC9S12DT64 microcontroller, a Flash memory, a relay module, an LCD liquid crystal display screen and a GPRS communication module. According to the invention, modular design is adopted, expansion is easy, online monitoring data is used for control, offline analysis data is used for analysis and real-time separation, the integrity of data analysis is ensured, three-axis vibration data is measured, the alarm weight and the alarm frequency band of each axis can be conveniently set, and great convenience is brought to remote monitoring by adopting a wireless communication technology.

The invention provides a page script monitoring method and device, and relates to the technical field of communication. The method comprises: receiving the page state message in the page execution process sent by the client, the page state message comprising the script execution state information, and determining the page stability parameter according to the page state message belonging to the same page; in a page execution process, the received page state message comprising script execution state information; when a script error occurs, recording script error state information; when no scripterror occurs, recording the normal state information of one script, so that the reported page state information is equivalent to the user reporting the script execution state information, the page script stability parameter is determined according to the script execution state information, the accuracy is higher and more objective, and the probability of false alarm can be reduced.

The invention discloses a COD (chemical oxygen demand) electrochemical rapid online monitoring system, and particularly relates to the technical field of COD detection. The COD electrochemical rapid online monitoring system is provided with a plurality of sampling modules, a position information integration module, a networking module, a judgment module and an alarm module. The judgment module can judge whether the COD data is abnormal or not by combining the change of the detection data, obtained by the data analysis module, of each monitoring point at different time points, the change of the detection data, obtained by the data analysis module, of the multiple monitoring points at the same time and historical detection data logs in a database, and meanwhile, the networking module collects weather information of an area where data abnormity occurs, judges whether data abnormity changes are caused by raining or not, and can judge an approximate monitoring area where the data abnormity occurs according to the position information of all the monitoring points and a layout diagram of all the monitoring points, so that accurate judgment of the data abnormity situation is guaranteed, the probability of false alarm due to rainy weather is reduced to a certain extent, an abnormal area with an abnormal condition can be quickly and accurately judged, and an accurate position can be timely found out for checking and overhauling.

The invention discloses a system and method for evaluating real-time consistency of programs at multiple monitoring points in a broadcast link, and the system comprises a program collection module, aprogram consistency evaluation module, a program abnormity analysis module, and an alarm logic processing module. The method comprises the steps: carrying out the coding of program signals of at leasttwo monitoring points on the broadcast link, and outputting program coding data; performing real-time consistency evaluation on the same program on different playing links to obtain a program consistency quantitative evaluation result of each monitoring point; performing frame-by-frame real-time heteromorphism analysis and detection on the program to obtain a program frame-by-frame heteromorphismassessment result; and according to the consistency quantitative evaluation result and the real-time abnormal state evaluation result, carrying out comprehensive judgment, analyzing whether a programabnormal state is really generated or not, and carrying out corresponding actions. According to the invention, real-time consistency evaluation and frame-by-frame abnormal degree evaluation results are integrated to determine whether abnormal states exist or not, so that the probability of false alarm is reduced, and the alarm accuracy and timeliness are improved.

The invention discloses an automobile blind area detection alarm method and system. The method comprises steps of S1, judging an automobile driving mode according to the speed Vo, steering wheel angleand yaw velocity of an automobile, and then executing S2; S2, determining an alarm area according to the vehicle driving mode and the vehicle driving speed Vo, and then executing S3; S3, judging whether a target enters an alarm area or not, if so, executing the step S4, and otherwise, ending; S4, judging whether the target has a historical tracking track or not, if so, executing the step S6, andotherwise, executing the step S5; S5, judging whether the target meets a secondary screening condition or not, if so, executing the step S6, and otherwise, returning to execute the step S3; S6, judging whether the duration time of the target in the alarm area exceeds a preset first time threshold value or not, if so, performing target alarm, and then ending, otherwise, returning to execute S3. According to the method, the false alarm rate under the environment where false alarm is easy to occur, such as static guardrails and enclosing walls, can be reduced.

The invention relates to the field of monitoring protection systems, in particular to an area monitoring method and device, electronic equipment and a readable storage medium. The method comprises the steps: obtaining a plurality of to-be-processed images, wherein the to-be-processed images area images collected by monitoring equipment in a corresponding protection area; carrying out target detection on each to-be-processed image, obtaining the target category and the target number in each to-be-processed image, wherein the target category and the target number in each to-be-processed image are in one-to-one correspondence; if a human body target exists in the to-be-processed image, judging whether the human body target in the to-be-processed image is located in a preset warning area or not; if the human body target in the to-be-processed image is located in a preset warning area, obtaining early warning position information, the early warning position information being position information of a protection area corresponding to the to-be-processed image in which the human body target exists in the image; and generating early warning information to be received by background personnel. According to the invention, the probability of false alarm is reduced.

The invention relates to the technical field of dam bank dangerous case monitoring, in particular to a dam bank dangerous case video detection method and system based on real-time image edge enhancement, and the method comprises the steps: obtaining N monitoring images for monitoring a dam bank, carrying out the graying processing of each monitoring image, and obtaining the gray image of each monitoring image; respectively carrying out geometric transformation and difference filling processing on each gray level image to obtain each corrected gray level image; carrying out edge enhancement processing on each corrected grayscale image to obtain each edge feature enhanced image; performing fusion processing on each edge feature enhanced image to obtain a multi-scale fusion image; and matching the multi-scale fusion image with a historical image stored in a database, and determining a dangerous case level of the monitored dam bank according to a matching result. According to the method, the dangerous situation of the dam bank can be accurately identified, the probability of misinformation of the dangerous situation is effectively reduced, and the dam bank dangerous situation inspection reliability is improved.

The invention discloses a high-recognition safe type centrifugal fan intelligent control system. The high-recognition safe type centrifugal fan intelligent control system comprises a centrifugal fan, a frequency converter connected with the centrifugal fan, a programmable controller connected with the frequency converter, a display and control touch screen, a temperature monitoring structure, a pressure monitoring structure and a remote alarm structure, wherein the display and control touch screen, the temperature monitoring structure, the pressure monitoring structure and the remote alarm structure are connected to the programmable controller. A power supply is further connected to the programmable controller and the frequency converter at the same time. The remote alarm structure comprises a signal emitter connected to the programmable controller, a signal receiving circuit connected with the signal emitter through a wireless network, a remote alarm connected to the signal receiving circuit, and a storage battery connected with the remote alarm and supplying power to the remote alarm. By means of the high-recognition safe type centrifugal fan intelligent control system, the system use safety is greatly improved, the product energy consumption is lowered, products are simplified, and meanwhile the use effect of the products is improved.