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204results about How to "Guaranteed monitoring effect" patented technology

Event-driven coal mine underground wireless sensor network system

The invention discloses an event-driven coal mine underground wireless sensor network system which comprises a base station device and an underground node device. An underground node wireless communication module comprises a sending state, a receiving state and a hibernation state. Three working states of the underground node wireless communication module can be converted to each other. An event-driven wireless sensor network in operation determines whether to trigger an event and transmit data to a base station by monitoring and judging whether data exceed a threshold value. The system has the characteristics of high communication efficiency and low operation energy consumption. According to the invention, the system is combined with coal mine underground safety production needs; through reasonable threshold setting and an improved routing protocol, the number of times of invalid communication among nodes is remarkably reduced; the communication efficiency is improved; the energy consumption of the nodes is reduced; the service life of a network is prolonged; collected useless data are reduced; in the case of an accident or alarm, useful alarm data can be quickly extracted; the event-driven network technology is applied to coal mine underground safety monitoring; and the system is an efficient coal mine safety monitoring system.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Offshore wind power single pile foundation pile monitoring device

The invention discloses a monitoring device for offshore wind power single pile foundation piles, which includes a single pile and a monitoring device installed on the single pile. The monitoring device includes: a data acquisition device for collecting monitoring data and transmitting it to a land server The dynamic inclinometer is located at the pile top of the single pile and the top of the fan; the vibration accelerometer is located at the inner wall of the pile at the top of the single pile; the inclinometer is arranged in different places along the main wind direction The inner side of the tower tube or the pile foundation of the elevation; the earth pressure gauge and the piezometer are installed in a paired manner along the main wind direction at different elevations from the mud surface on the outer wall of the single pile. The device monitors the stress-strain characteristics of the steel pipe pile foundation, pile-soil circumferential resistance and pore water pressure, jacket steel acceleration, tower inclination, buckling deformation, and fracture, uneven foundation settlement, steel structure corrosion and other potential faults. And it can automatically warn when the above hidden dangers occur, so as to provide reliable technical support for safe operation.
Owner:HUADIAN HEAVY IND CO LTD

Third-generation (3G) network based video monitoring system bandwidth self-adaption transmission method

The invention discloses a third-generation (3G) network based video monitoring system bandwidth self-adaption transmission method applicable to a sending end and a receiving end connected through a 3G network. The 3G network based video monitoring system bandwidth self-adaption transmission method includes steps that the sending end performs compressed encoding on a real-time video to be sent, sends a video user datagram protocol (UDP) data packet through a private protocol, dynamically adjusting a sending rate according to a feedback message sent by the receiving end, and performs accumulative confirmation and retransmission on video data lost by the receiving end; the receiving end receives the video UDP data package, counts packet loss conditions, requests the sending end to perform retransmission and provides the sending end with network conditions. By means of the technology, when a bandwidth of a transmission network is low or poor in stability, the 3G network based video monitoring system bandwidth self-adaption transmission method is capable of guaranteeing high-efficiency sending of data frames to a monitoring end and guaranteeing monitoring effects without influencing real-time and complete transmission of video images.
Owner:INSPUR GROUP CO LTD

Internet-based intelligent household sound equipment

The invention discloses Internet-based intelligent household sound equipment which comprises a box body, a main control board inside the box body, a horn on the box body, and a camera arranged on the upper portion of the box body. The main control board comprises a microprocessor module, an APP module, a Wifi module, a camera adjusting module, an audio input module, a power amplifier module and a power controller, wherein the power controller supplies power to the electrical parts and the circuits of the sound equipment, the microprocessor module is respectively connected with the APP module, the Wifi module, the camera adjusting module, the audio input module and the power amplifier module, and the microprocessor module adjusts the movement of the camera through the camera adjusting module. Remote control and remote conversation are realized through the APP module and the Wifi module. The camera is intelligently controlled, automatic tracking based on infrared technology, automatically adjusting shooting direction, and horizontal and vertical shooting with no blind angle are realized, and the shooting effect and monitor effect are guaranteed. The pore structure of a speech acquisition microphone is designed in a scientific and reasonable way, and speech control signals can be effectively identified.
Owner:GUANGZHOU CITY CHUANGHONG ELECTRONICS

Magnetic-suspension wave detector

The invention provides a magnetic-suspension wave detector. The magnetic-suspension wave detector comprises a shell, a fixed permanent magnet, a first diamagnetic body, a coil, a second diamagnetic body and a suspension permanent magnet, wherein the fixed permanent magnet, the first diamagnetic body, the coil and the second diamagnetic body are sequentially arranged at the inner part of the shell from top to bottom, the suspension permanent magnet is positioned in the coil, and the magnetic pole magnetisms of the fixed permanent magnet and the suspension permanent magnet facing each other are different. According to the magnetic-suspension wave detector provided by the invention, the gravity born by the suspension permanent magnet can be offset through an attraction force from the fixed permanent magnet to the suspension permanent magnet, and the suspension permanent magnet is guaranteed to be in a stable state through the diamagnetic bodies which are positioned at the upper part and the lower part of the suspension permanent magnet; and when the suspension permanent magnet shifts to optional one direction, a component force of a horizontal direction or a vertical direction of a resulting force born by the suspension permanent magnet is opposite to a shifting direction, thus the suspension permanent magnet can be quickly and accurately attracted to return to a balance position, and the sensitivity and the accuracy of monitoring are increased.
Owner:丹东大东线圈工程有限公司

Casing perforation horizontal well liquid-producing profile testing device and testing method and production test integrated pipe column

The invention belongs to the technical field of a casing perforation horizontal well liquid-producing profile test and particularly relates to a casing perforation horizontal well liquid-producing profile testing device and testing method and a production test integrated pipe column. The middle part of a base pipe of the device is provided with first liquid inlet holes, and a protection pipe sleeves the base pipe. Plug heads and oil and water absorbing swelling rubber ring sleeves are distributed on two ends of the protection pipe. Release cavities are between the protection pipe and the basepipe, two ends of the release cavities are provided with oil-soluble tracer carriers and water-soluble tracer carriers. Two ends of the protection pipe are provided with channels for a reservoir fluidto enter the release cavities. According to the invention, the disadvantages of the need of tripping pipe string, high requirements of high temperature and corrosion resistance of equipment, difficult entering, too high test cost, short test period and high requirement for a well type of the existing horizontal well liquid-producing profile testing technology of a casing perforation complete wellcan be solved, and the long-term economic and effective long-term test for a horizontal well liquid-producing profile can be carried out without affecting normal production.
Owner:XI'AN PETROLEUM UNIVERSITY

Method for installing acoustic emission sensor on mine

The invention discloses a method for installing an acoustic emission sensor on a mine, and belongs to the technical field of acoustic emission monitoring of a mine coal-rock mass. The method for installing the acoustic emission sensor on the mine comprises the following steps of (1) carrying out drilling on a mine coal-rock stratum according to the requirement of the design and construction; (2) conveying the sensor to the bottom of a hole through a conveying pipe to enable the acoustic emission sensor and the hole wall of the drilled hole to be in tight coupling contact, wherein the acoustic emission sensor comprises a signal line, an outer shell, an acoustic emission signal receiver and clamping jaws; (3) pulling the conveying pipe out, enabling the clamping jaws of the acoustic emission sensor to clamp the hole wall of the drilled hole so that the acoustic emission sensor cannot slide off, and arranging a signal circuit of the acoustic emission sensor; (4) using mining hole sealing agents to block the hole opening of the drilled hole to isolate interference noise of the outside world. According to the method for installing the acoustic emission sensor on the mine, due to the fact that the acoustic emission sensor is embedded into the rock mass in a drilling mode, interference caused by the noise of the outside world on real-time monitoring is avoided, and monitoring precision is improved; due to the fact that the clamping jaws are fixedly arranged in the drilled hole, the acoustic emission sensor and the rock mass of the mine are tightly coupled, and the problems that grouting is tedious and whether grouting is in place or not cannot be easily judged are effectively solved.
Owner:CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD

Intelligent inclination measuring system and monitoring method thereof

The invention provides an intelligent inclination measuring system and a monitoring thereof method. The intelligent inclination measuring system comprises an automatic inclination measuring machine, adata acquisition terminal, a cloud monitoring management system and a power supply system. The automatic inclination measuring machine comprises a machine frame, an unwinding device, a cable arranging device, a meter counting device, a reversing device, a correcting device, an in-place detecting device, an electric control system, a gripping device and a trial winding device; the intelligent inclination measuring system is simple in structure and convenient to maintain, assemble and disassemble, and does not have a safety hazard; an inclination measuring pipe is detected by simulating automatic trial winding of an inclination measuring device; the damage of an inclination measuring sensor, inaccurate data and the like are avoided; the operating state of equipment can be monitored in realtime by arranging a tension sensor; automatic measurement is realized in the overall process; measuring point data are automatically acquired through the data acquisition terminal and are transmittedto the cloud monitoring management system in real time; event information in the operating process of the equipment is displayed through the cloud monitoring management system; the intelligent inclination measuring system processes and gives an alarm when an abnormity appears; the measurement precision is high; and the equipment is stable and reliable, and can be applied to deformation monitoringon a sliding surface in a soil body of a landslide mass, dangerous rock, high side slope and the like.
Owner:广州日昇岩土科技有限公司
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