52results about How to "Prevent false alarms" patented technology

A system comprising an antenna module and a processor sub-module. The antenna module is configured to connect and send data to a network through a wireless connection. The network is configured to (A) connect to web services in a first mode and (B) integrate with user devices in a second mode. The processor sub-module is configured to provide a physical connection to (i) the antenna module, (ii) a plurality of output devices, and (iii) a plurality of sensors. The plurality of output devices are configured to implement a virtual receptionist. The plurality of sensors send data to the network.

The invention provides a system and a method for detecting leakage of a high-temperature gas in a high-temperature high-pressure guide pipe of an airplane, and belongs to the field of high-temperature high-pressure gas leakage detection. The method is characterized by comprising the following processes that: (1) when the high-temperature gas is leaked from the guide pipe, the ambient temperature around the guide pipe is raised quickly; and due to the heating action of the gas, the resistance value of a thermistor is changed rapidly along the raising of the temperature so as to judge whether the gas is leaked; and (2) according to the theory, the variations of the resistance values of the ends AB, AD, CB, CD, AC and BD are detected at the same time; and if the resistance values of three ormore paths are different from the rated values, the gas in the area is leaked. Compared with other detection systems, the system has the advantages of simple structure, high reliability and the like,and can synchronously realize leakage judgment and position location of the high-temperature gas guide pipe of the air plane of other high-temperature gas pipelines. The leakage detection system has great significance for guaranteeing the flying safety and improving the running dispatch rate of the air plane.

The invention provides a fire early warning device for an aircraft engine. A redundancy voltage comparing and detecting technology, an outputting closed loop detecting technology and a crosslinking communication monitoring technology are used for detecting fire of the aircraft engine. The fire early warning device for the aircraft engine comprises an electrical bridge circuit, a logic control unit, a signal outputting circuit, a crosslinking outputting line and a crosslinking inputting line, wherein the electrical bridge circuit is provided with a thermal inductance resistance sensor; variations of resistance values of the thermal inductance resistance sensor are compared and judged by the logic control unit; fire warning and line faults can be detected in time; an outputting port is subjected to read-in comparison when equipment is electrified and runs; the outputting state is detected in real time so as to find out faults of a detecting box in time; and a crosslinking monitoring circuit monitors states of adjacent fire early warning devices in real time and transmits a device fault signal when the adjacent fire early warning devices fail.

A seismic-detection sensor device includes two accelerometers having different sensitivities. The seismic-detection sensor device provides excellent precision and operability monitoring.

An installation for the detection of projecting material defects in a paper web or corrugated cardboard web moved in a feed direction. The device comprises a sensor device comprising a first sensor unit with a first emitter for emitting first sensor beams and a second emitter for emitting second sensor beams and with a second receiver, wherein the first sensor beams run parallel to the material surface to be monitored of the paper web or corrugated cardboard web and travel along a first signal path S1 in-between. The sensor device further has a second sensor unit comprising a second emitter for emitting second sensor beams and a second receiver, wherein the second sensor beams run parallel to the material surface and travel along a second signal path S2 in-between. The first and second sensor units are oriented in such a way that the distance between the first and second sensor beams relative to the feed direction changes along their signal paths S1, S2.

Embodiments provide a method and apparatus for indicating aircraft height relative to an obstruction in a terrain awareness warning system. The method includes receiving data indicative of geographic features of an obstruction, lateral distance of the geographic features from an aircraft, height and flight path of the aircraft, calculating a projected height of the aircraft at the location of the obstruction using the data, generating a result signal, and displaying a colored indication on a display screen based on the result signal. The apparatus includes inputs for signals from instruments measuring height, flight path, and location of an aircraft, as well as an input for an instrument providing information about geographic features of terrain surrounding the aircraft.

The invention relates to an on-line timing method of mash gas sensor of safety monitoring system for mining, which includes three modes: 1) doing on site alignment calibration of mash gas sensor, that is controlling the mash gas sensor and sending the alignment calibration status messages to the monitoring branch station and the monitoring server out of mine; the monitoring server out of mine displays the mash gas sensor is in alignment calibration condition; then doing on site ventilation alignment calibration and service interruption functional test of the corresponding mash gas sensor, at last ending the alignment calibration condition; setting a mash gas sensor in a alignment calibration condition by the monitoring branch station, then doing on site ventilation alignment calibration and service interruption functional test of the corresponding mash gas sensor, at last ending the alignment calibration condition; setting a mash gas sensor in a alignment calibration condition by the monitoring server out of mine, then doing on site ventilation alignment calibration and service interruption functional test of the corresponding mash gas sensor, at last ending the alignment calibration condition. The invention can shorten the blind zone in monitoring time, in order to improve downhole operation safety and reduce mis-alarming.

The present invention relates to a device, system and method for determining at least one vital sign of a subject. The device (130) comprises an input interface (131) configured to obtain at least three detection signals (210) derived from detected electromagnetic radiation transmitted through or reflected from a skin region of a subject, wherein each detection signal comprises wavelength-dependent reflection or transmission information in a different wavelength channel, a vital sign extraction unit (132) configured to extract multiple candidate vital signs (232) of the same type of vital signfrom said at least three detection signals, wherein each candidate vital sign is extracted from a different detection signal or a different combination of at least two detection signals, a vital signdetermination unit (133) configured to determine a final vital sign (233) from said multiple candidate vital signs, and a reliability information unit (134) configured to provide reliability information (234a) indicating the reliability of said final vital sign and / or one or more of said candidate vital signs and to provide unreliability source information (234b) indicating the source of unreliability of said final vital sign and / or one or more of said candidate vital signs.