7results about How to "Reliable alarm" patented technology

The invention discloses a bracelet tumble detection system and detection method based on a magnetic attraction split type framework, and belongs to the technical field of intelligent wearing. The system comprises an upper watch body and a lower watch body which can be separated, and the lower watch body continuously monitors the connection state of an acceleration sensor and a magnetic attraction contact. When a user falls down, a transient signal interaction change of a contact can be caused by a violent impact force, and a specific electric signal characteristic is generated. According to the invention, through fusion analysis of the acceleration sensor threshold and the contact transient signal, high-precision and low-false-alarm identification of the fall event is realized. Meanwhile, the split type design is matched with a double-battery management strategy, so that the problem of monitoring interruption during the charging period is solved. The system also has a multi-level alarm link guarantee, and ensures reliable transmission of help-seeking information. According to the invention, the safety monitoring capability of wearable equipment of high-risk crowds such as old people is effectively improved.

This invention discloses a stream-based real-time log analysis and alerting method, apparatus, and related equipment. The method includes: collecting log data generated by different security devices; adding a flag field to each collected log data; formatting the log data according to the flag field; normalizing the formatted log data using a streaming processing framework; caching the normalized log data according to a preset matching scheme; determining whether the number of cached logs of the same statistical dimension reaches a preset threshold; if so, determining whether the generation time of all log data reaching the preset threshold exceeds a preset observation time range; and generating an alert if so. This method can solve the problem of log consumption capacity being less than log generation speed, significantly improving the analysis efficiency of attack log data and achieving more efficient log processing and alerting.

The application discloses a current sharing monitoring system of a direct-current controllable energy dissipation device and a voltage limiter column grouping method thereof, wherein the grouping method considers the number of voltage limiter columns of the direct-current controllable energy dissipation device, the current flowing through the voltage limiter when the protected equipment is overvoltage, and a current distribution coefficient, a single valve piece breakdown short circuit scenario of a voltage limiter column is simulated by using an electromagnetic transient simulation model, the voltage limiter column is grouped according to the current distribution under the scenario and the current distribution coefficient setting value, or the final grouping scheme is obtained by continuing to adjust and check through iteration, and then a current measuring device is configured for each group of voltage limiter columns according to the grouping scheme, so that current sharing monitoring calculation and logical judgment are realized. The application can reduce the cost of the current sharing monitoring system of the direct-current controllable energy dissipation device, and can reliably output an alarm signal when the current distribution coefficient is abnormal.

The invention discloses a dry denitration method and device for low-flue-gas-flow high-concentration NOx flue gas, and the method comprises the following steps: introducing flue gas into a pipeline, arranging a reserved catalyst layer at the initial end of the pipeline, arranging multiple stages of catalyst layers in the pipeline at the rear end of the reserved catalyst layer, arranging ammonia spraying grids on the reserved catalyst layer and the multiple stages of catalyst layers, and spraying ammonia on the ammonia spraying grids. Heat exchangers are arranged at the rear ends of other catalyst layers except the last stage; when the flue gas enters the pipeline, the flue gas is heated to a reaction temperature at the inlet of the pipeline, ammonia gas is sprayed out through the ammonia spraying grid, so that the flue gas and the ammonia gas are subjected to a multi-stage reaction under the action of a catalyst when passing through the reserved catalyst layer and the multi-stage catalyst layer, and during the period, the heat exchanger is used for heat exchange and temperature control to maintain each stage of reaction temperature at the reaction temperature, so that denitration is realized. The method has the characteristics of high denitration efficiency, low ammonia consumption, simple equipment, controllable system temperature, no wastewater generation and the like.

The thoracic cavity decompression device comprises a thoracic cavity inner catheter (1), a thoracic cavity outer catheter (2), a thoracic cavity inner fixing air bag (3), a decompression alarm mechanism (4) and a bacteria filtering mechanism (5). The intrathoracic catheter (1) is communicated with the extrathoracic catheter (2), an intrathoracic fixing air bag (3) is arranged on the intrathoracic catheter (1), a decompression alarm mechanism (4) and a bacteria filtering mechanism (5) are arranged on the extrathoracic catheter (2), and the bacteria filtering mechanism (5) is arranged on the side, away from the intrathoracic catheter (1), of the decompression alarm mechanism (4). Compared with the prior art, the device has the advantages that one-way decompression of the long-term indwelling thoracic cavity can be achieved, meanwhile, the pressure change in the thoracic cavity is effectively detected, and re-pneumothorax is prompted in time.

The invention provides an alarm processing method and device for a surgical robot and electronic equipment, and the method comprises the steps: obtaining a current motor coding value and a previous motor coding value in a previous task cycle according to position alarm information, and determining a difference absolute value between the current motor coding value and the previous motor coding value; if the absolute value of the difference value is smaller than the preset motor speed, it is determined that the motor is blocked, the blocking frequency is recorded, and when the blocking frequency is larger than a preset blocking frequency threshold value, the motor is restarted, and the motor movement speed is increased; according to the pose alarm information, when the surgical arm attitude angle of the surgical robot exceeds a preset target attitude angle, a target surgical arm angle exceeding a limit is prompted to a user; and when the motor position of the surgical robot exceeds the preset target limit, prompting a user that the motor exceeds the limit. The abnormal condition that the motor cannot reach the target position within the set time can be effectively recognized, and a reliable alarm and prompt mechanism is provided when the motor is blocked or the attitude angle exceeds the limit, so that safe operation of the surgical robot is ensured.

The present invention discloses a smoke concentration detection system for a cargo hold of a civil aircraft based on polarized light. It includes an adjustable light emitting module, an adjustable polarized light receiving module, and a logic control and data processing module; the adjustable light emitting module is used to output infrared or blue light signals with variable intensity, which enter the adjustable polarized light receiving module after being scattered by smoke particles; the adjustable polarized light receiving module is used to convert the light signal into an electrical signal and then input it into the logic control and data processing module; the input logic control and data processing module is used to perform data processing on the electrical signal to judge smoke and interference, and at the same time adjust the amplification factor according to the signal intensity of the adjustable polarized light receiving module. The present invention has a wide detection concentration range, good detection concentration continuity, high adjustment accuracy, and reliable alarm.