45results about How to "Shorten the alarm time" patented technology

The invention discloses a road lamp management and taxi call automatic dispatching system based on the Internet of things. The system uses the road lamps spreading over roads in the city as the positioning and network basis and adopts the ZigBee wireless network and GPRS (General Packet Radio Service) / GSM (Global System for Mobile Communications) / 3G mobile communication network to realize two-way communication between the road lamps and a road lamp control station, between the passengers and a taxi management centre, between citizens and an alarm centre as well as between the taxi management centre and a vehicle-mounted taxi GPS terminal.

The invention relates to a method and a system for monitoring and warning the influence of a landslide on a pipeline. The monitoring is divided into two parts including monitoring of thrust of the landslide on the pipeline and pipeline strain monitoring. The method for monitoring the thrust of the landslide on the pipeline comprises the steps of: using a packaged earth pressure cell fiber Bragg grating sensor (4) fixed on the pipeline (14) to measure the pressure, wherein a sensitive surface of the earth pressure cell fiber Bragg grating sensor (4) for sensing the pressure faces toward the sliding direction of the landslide (13), so the pressure measured by the earth pressure cell fiber Bragg grating sensor (4) is the front thrust of the landslide (13) on the pipeline. The method for monitoring pipeline strain comprises the steps of: uniformly arranging pipeline (14) monitoring sections on edges on two sides of the landslide (13) and the pipeline (14) at the central position of the landslide, wherein the interval of the monitoring sections is no more than 60m; and uniformly arranging three pipe strain fiber Bragg grating sensors (3) on each pipeline (14) monitoring section of the pipeline (14) to monitor the axial strain of the pipeline (14).

The invention discloses a smart watch with an emergency calling function and a smart watch system, belongs to the field of watches and aims to solve the technical problems that an existing smart watchcannot perform emergency calling, and less information is provided for rescue teams. The smart watch structurally comprises a watch terminal, a power module, a clock module and a display screen, thepower module, the clock module and the display screen are arranged at the watch terminal, the display screen is connected with the clock module, the watch terminal is further provided with an audio and video acquisition module, a wireless communication module, a position acquisition module, an alarm module, an emergency calling key and a one-key calling APP (application), the audio and video acquisition module, the position acquisition module and the alarm module can be driven to simultaneously start by triggering the emergency calling key under calling of the one-key calling APP, and the wireless communication module can be called to transmit audio information, video information, current position information and alarm information to a remote alarm receiving center. The system comprises the remote alarm receiving center and a plurality of smart watches with the emergency calling function.

The invention discloses a method for determining the rapid air leakage of a tyre. The method comprises the following steps: 1, detecting the pressure of the tyre each 6s; 2, executing step 3 if one detected pressure value is above 0.30bar lower than a last detected pressure vale, and returning to step 1 if not; 3, detecting the pressure of the tyre at the seventh second, and determining whether the obtained seventh-second pressure value of the tyre is equal to or greater than 0.04bar lower than the sixth-second pressure value, executing step 4 if the seventh-second pressure value is equal to or greater than 0.04bar lower than the sixth-second pressure value, and returning to the step 1 if not; and 4, detecting the eight-second pressure of the tyre, determining whether the obtained eighth-second pressure value of the tyre is equal to or greater than 0.04bar lower than the seventh-second pressure value, timely alarming if the eighth-second pressure value of the tyre is equal to or greater than 0.04bar lower than the seventh-second pressure value, and returning to the step 1 if not, wherein a case that the eighth-second pressure value of the tyre is equal to or greater than 0.04bar lower than the seventh-second pressure value shows that the air leakage of the tyre is fast carried out. The method of the invention can improve the detection of the rapid air leakage of the tyre and the alarming speed of a tyre pressure monitoring system.

The invention discloses a high-usability high-reliability and high-efficiency fire evacuation indicating system and a method. The system adopts a three-layer system structure formed by an evacuation indicating control host machine, passageway evacuation indicating control sub machines and passageway detection / indicating devices, wherein the passageway evacuation indicating control sub machines are positioned at stairs of each floor, each unit of the system exchanges information through an element interconnect bus (EIB), and the passageway detection / evacuation indicating devices are directly embedded into the control sub machines. Wireless backup communication is additionally added between the host machine and the sub machines (the passageway detection / evacuation indicating devices), and the integral reliability and the usability of the system are enhanced. The secondary threshold warning strategy of a composite fire hazard detector is adopted, a corresponding information processing method is used as an auxiliary measure, in addition, evacuation paths are continuously regulated according to the real-time fire conditions, the goals of shortening the warning time and reducing the mistake warning rate are reached, and the usability of the evacuation indicating system is further improved. The space positions of the detection / indicating devices are shown according to the floors on the basis of the three-dimensional geographical characteristics of the tall building evacuation paths, the building typical evacuation structure and the Dijkstra algorithm with an improved data structure are adopted, and the route planning efficiency of the escape route is improved.

The invention discloses a method for detecting thermal runaway of a lithium battery based on an infrared thermal imager, which is characterized by comprising the following steps: (1) detecting an infrared ray specific wave band signal of thermal radiation of an object by using a photoelectric technology through the infrared thermal imager, and converting the signal into an image and a graph which can be visually distinguished by human beings; (2) carrying out graph preprocessing on the images, carrying out denoising by utilizing a median filtering method, and framing a candidate region; and (3) carrying out non-maximum suppression (NMS) processing on the candidate area to obtain a motion area with the highest temperature, calculating the highest temperature of the motion area, and judging whether the highest temperature exceeds a preset threshold value or not so as to judge whether to give an alarm or not. The invention has the following beneficial effects: (1) the alarm time is shortened; (2) an alarm area can be visually observed, and time is won for rescue; and (3) the invention can adapt to different lithium battery transportation and storage environments by adjusting the set alarm threshold value, and the fire monitoring efficiency is improved.

The invention discloses a road lamp management and taxi call automatic dispatching system based on the Internet of things. The system uses the road lamps spreading over roads in the city as the positioning and network basis and adopts the ZigBee wireless network and GPRS (General Packet Radio Service) / GSM (Global System for Mobile Communications) / 3G mobile communication network to realize two-waycommunication between the road lamps and a road lamp control station, between the passengers and a taxi management centre, between citizens and an alarm centre as well as between the taxi management centre and a vehicle-mounted taxi GPS terminal.

The invention relates to a method and a system for monitoring and warning a pipeline landslide based on a fiber Bragg grating and a method for constructing the system. The monitoring is performed on four parts including landslide depth displacement, landslide surface displacement, thrust of landslide on a pipeline and pipeline strain, and comprises the steps of: firstly, inserting an inclinometerpipe (1) pasted with a fiber Bragg grating sensor from the landslide (13) to all potential sliding surfaces (15); secondly, embedding a slender concrete ground beam (2) of which two ends are fixedly restrained and the axial direction of a central reinforced bar (17) is stuck to a ground beam fiber Bragg grating sensor (20) in a direction vertical to the deformation direction of the landslide (13)below the surface of the landslide (13); thirdly, measuring the thrust of the landslide (13) on the pipeline by using an earth pressure cell fiber Bragg grating sensor (4) fixed on the pipeline (14);and fourthly, arranging monitoring sections on edges on two sides and the pipeline (14) in the center of the landslide (13), and uniformly arranging three pipe strain fiber Bragg grating sensors (3) on each monitoring section to monitor the axial strain of the pipeline (14).

The invention relates to an optimized critical accident alarm method and system. The method includes: collecting detector data according to a preset collection period; accumulating the collected data in each collection period to obtain an accumulated value; when the accumulated value reaches the preset value , calculate and store the accumulated dose rate according to the accumulated value and the current accumulated time; when the preset maximum time is reached but the accumulated value fails to reach the preset value, calculate and store the accumulated dose rate according to the accumulated value and the maximum time; compare the accumulated dose rate and the alarm threshold, and decide whether to alarm according to the comparison result. The system includes: a data acquisition module, a data accumulation module, a first data calculation module, a second data calculation module and an alarm module. The beneficial effects of the present invention are as follows: the present invention adopts a data collection period much shorter than that of the conventional one for data collection, can detect critical accident states in time and give an alarm, shortens the alarm time under critical accidents, and provides more detailed and accurate data due to the short collection period .

The invention discloses a judgment method of a bonding behavior between a continuous casting slab and a crystallizer copper plate, and belongs to the technical field of metallurgical continuous casting processes. The judgment method comprises the following steps: (1) the temperature data acquisition, preprocessing and storage of thermocouples in the crystallizer copper plate are performed; (2) the temperature rise abnormity inspection of single thermocouple is performed through the temperature change speed of the thermocouples; (3) the longitudinal bonding propagation model inspection between rows of the thermocouples with temperature rise abnormity and adjacent rows is performed to calculate the total number of the thermocoupls with temperature rise abnormity and satisfying the model inspection as X; and (4) the judgment of bonding alarming or bonding warning is performed according to the total number of the thermocoupls with temperature rise abnormity and satisfying the model inspection. The judgment method realizes judging timeliness and accuracy of casting slab bonding, shortens the alarming response time as far as possible, and reduces the wrong report frequency when guaranteeing 100% of bonding report rate.

The invention discloses a flame-retardant modified graphene oxide film. The flame-retardant modified graphene oxide film is produced from, by weight, 0.1-0.6 part of ascorbic acid, 1 part of grapheneoxide and 0.1-0.5 part of a silane coupling agent. A production method of the flame-retardant modified graphene oxide film comprises the following steps: preparing an aqueous solution by using graphene oxide, adding the silane coupling agent and L-ascorbic acid, performing stirring, removing bubbles as possible, and drying the obtained solution to obtain the film. A low-temperature fire early warning device is constructed on the basis of the film. The device is formed through sequentially connecting a low-voltage safety battery, a warning lamp and the modified graphene oxide film by lead wires. Silanization treatment is adopted to realize the synergistic flame retardancy of the graphene oxide and silicone and enhancement of the thermal stability of the structure, and the addition of the L-ascorbic acid can enhance the thermal reaction of graphene oxide at a low temperature, so the silane and L-ascorbic acid synergistically-modified graphene oxide film produced in the invention reducesthe response temperature of early warning, greatly shortens the early warning time, and can maintain the skeleton at a high temperature or in a flame in order to continuously give an alarm.