40results about How to "Reliable early warning" patented technology

The invention belongs to the technical field of medical appliances, and relates to an ultrasonic puncturing navigation method, particularly to an ultrasonic puncturing navigation method based on electromagnetic location. The navigation method orderly comprises the following steps: A, tracking and collecting position information of a probe and a puncturing needle through a puncturing location system under the control of a navigation software subsystem, wherein the puncturing location system refers to an electromagnetic puncturing location system; B, transmitting the collected information to an ARM (Advanced RISC Machines) processor in the navigation software subsystem through the electromagnetic puncturing location system, and performing data correction and post treatment; and C, transmitting the information after being corrected and post-processed to an ultrasonic imaging equipment through the navigation software subsystem to realize visual display. The ultrasonic puncturing navigation method based on the electromagnetic location has the advantages of exact location, small volume and light weight; the method is nonradiative and is slightly affected by environmental factor; the puncturing needle path is displayed in real time; and the needle tip position can be clearly observed at random angle, the puncturing accuracy is improved, the hemorrhagic complication is reduced, and the safety is improved.

A pre-warning method and mechanism for opening the door of car features that before the door is going to be opened, the side lamp is flushing and the pre-warning sound is generated from the horn of car, and when the openness of door reaches 2/5-3/5 of the most openness, the flash light and pre-warning sound is stopped. Its control switch can be arranged on the handle of door.

The invention relates to the technical field of intelligent control and provides a monocular-vision-based anti-collision early warning system for rail transit, which comprises an image pick-up device, a controller and an alarm; the image pick-up device is mounted at the front end of a vehicle; the signal output end of the image pick-up device is electrically connected with the signal input end of the controller; and the signal output end of the controller is electrically connected with the signal input end of an alarm device. According to the monocular-vision-based anti-collision early warning system for rail transit, analysis and early warning can be performed to rail transit through machine vision, so that the stability is high, and the system can serve as an auxiliary system for the conventional anti-collision early warning system for rail transit; and in the further technical scheme, an ultrasonic range finder is used, so that early warning of the system can be more accurate and more reliable.

The invention relates to a fine automatic prediction method and a system for atmospheric horizontal visibility with a high spatial resolution. The fine automatic prediction method comprises steps of comprehensively analyzing and processing atmospheric numerical model data and observation data at an automatic meteorological station, establishing a large data set with the principle of minimum spatial horizontal distance; inputting the data set into a deep neural network framework, processing with a plurality of hidden layers to obtain a nonlinear relationship between a predictor and a tag , continuously adjusting a weight by feedback learning of a deep neural network neuron to train a visibility model that can distinguish overall characteristics of the predictor; and then cooperating with aninterpolation method to obtain a fine prediction of visibility with a high spatial resolution. The fine automatic prediction method effectively solves the problem of poor accuracy of predicting the visibility, lower spatial resolution and lower automation level in the prior art, thus provides a reliable warning for local low-visibility disasters occurred at sea, inland, and ports, and is expectedto become a powerful tool for visibility prediction in the meteorological station.

The invention provides a hydraulic turbine governor servomotor action rate deviation degree early warning method and system. The hydraulic turbine governor servomotor action rate deviation degree early warning method comprises the steps of collecting the early data of an governor in a healthy state, obtaining the travel of a servomotor through conversion according to the guide vane opening degree,and obtaining action rate data of the servomotor ; establishing a servomotor action rate standard model based on a deep artificial neural network through servomotor action rates under different guidevane opening degrees, different pressures of a pressure oil tank, different positions of a pressure distributing valve and different upstream and downstream water levels; substituting the acquired working condition data into the servomotor action rate standard model to obtain a standard value of the action rate under the working condition; obtaining the servomotor rate deviation degree through the ratio of the standard value to the actually measured servomotor rate; and conducting prediction on the obtained servomotor action rate deviation degree sequence to obtain a future change trend, andgenerating early warning if the future deviation degree exceeds a set threshold value. The precision of the action rate deviation degree prediction result is high, and reliable early warning can be provided.

The invention relates to an online water quality monitoring device and method. The device comprises an integrated water quality detector which is provided with a water inlet pipe and a water outlet pipe; the water inlet pipe is divided into three branches, namely a municipal water source inlet pipe, a water tank water source inlet pipe and a standard water source inlet pipe; electromagnetic valvesare arranged on the municipal water source inlet pipe, the water tank water source inlet pipe and the standard water source inlet pipe; and the electromagnetic valves on the municipal water source inlet pipe, the water tank water source inlet pipe and the standard water source inlet pipe are electrically connected to a controller through wires. The device and the method are flexible, timely and effective; the turbidity of a water source of a water tank is monitored in real time, and comprehensive water quality parameter detection analysis is started once when turbidity early warning exists; and even if there is no turbidity early warning, comprehensive water quality parameter detection can be carried out periodically. The controller provided by the invention regularly performs online calibration on a water quality detection instrument, so that the accuracy and reliability of data acquisition, comparative analysis and early warning alarm are ensured.

A method for detecting an activity of an object disposed within a medium at a depth ranging from about 0 to about 100 cm using a radar system, the method including establishing a baseline radar power level of the object in the medium; and detecting one or more radar data anomalies in radar data received of the medium with respect to the baseline radar power level, wherein a presence of the one or more anomalies indicates a presence of the activity of the object.

The invention discloses a comprehensive online monitoring device and method for a switch cabinet. The switch cabinet comprehensive online monitoring device comprises an intelligent early warning mechanism, wherein a base is fixedly installed at the bottom part of the intelligent early warning mechanism, a top plate is fixedly installed at the top part of the base through an installation column, and the front end face of the intelligent early warning mechanism is provided with a traveling wave signal collector, a fault point range finder and a partial discharge signal collector. According to the comprehensive online monitoring device and the method, when in use, a fastener between mounting piece on the outer surface walls of a plate IV and a plate I is loosened, and the operation of a maininterface of the intelligent early warning mechanism can be carried out; and a plate II, a plate III and the plate IV can be wrenched in sequence from the left side to separate cards on the inner surface walls from the installation column, at the moment, a cover closing mechanism composed of the plate I, the plate II, the plate III and the plate IV can be separated from the intelligent early warning mechanism and integrated with the intelligent early warning mechanism, an operator can operate and overhaul the device from a proper position, and therefore the using effect of the comprehensive online monitoring device for the switch cabinet is improved.

The invention provides a safety signal valve automatically discharging dust for a dust remover dust hopper in a severe dust accumulation state. The safety signal valve is installed on a dust discharging pipeline. The dust discharging pipeline is provided with a dust inlet pipe stretching in a hopper body and a dust discharging pipe stretching out of the hopper body. The hopper body is provided with a design bearing material level and a high-material-level warning material level, wherein the dust inlet pipe is located between the design bearing material level and the high-material-level warning material level. The safety signal valve comprises a detection opening flange fixedly arranged at a pipe opening of the dust discharging pipe, an elastic pressure applying assembly fixedly connected with the detection opening flange, and a door rod, wherein one end of the door rod is connected with a valve deck used for sealing the pipe opening, and the other end of the door rod is connected with the elastic pressure applying assembly. The safety signal valve can be matched with the dust discharging pipe to conveniently judge whether the dust remover dust hopper is in a normal state or an abnormal state; and in addition, automatic dust discharging can be conducted after the design dust storing bearing capability of the dust remover is exceeded, and meanwhile, sound-light alarming of the dust remover in the accidental dust accumulation state is achieved.