166results about How to "High monitoring sensitivity" patented technology

The invention provides an automatic inspection type layered settlement instrument. A conduit connection ring is arranged out of a conduit joint, and a conduit sealing head is mounted at the bottom end of a conduit; a settlement ring is arranged out of the conduit, a magnet ring is mounted in the settlement ring, and folding and unfolding anchoring iron sheets are installed out of the settlement ring; the upper end of the conduit is provided with a measuring box, a magnetic induction measuring probe is mounted in the conduit and is connected with a fine cable, the upper end of the fine cable is connected with an electric settlement amount measuring apparatus which is connected with a measurement and control and wireless transmission apparatus, and the measurement and control and wireless transmission apparatus is connected with a radio transmit-receive antenna and further connected with a hand-held monitoring apparatus located out of the measuring box through a signal cable. The automatic inspection type layered settlement instrument is used for long-term monitoring of layered settlement of a soft soil foundation on the land and has the advantages of easy and convenient installation, low cost, high monitoring precision and sensitivity and capacity of automatically monitoring settlement amount of each soil layer to be measured; automatic unmanned monitoring and data acquisition are realized because of automatic wireless transmission of monitoring data to a remote receiver, and the hand-held monitoring apparatus can also be used on site for reception of the monitoring data and real time detection.

The invention relates to an oil production well productivity tracking and evaluating method. The method comprises the following steps of 1) during a fracture construction process, adding liquid indicator agent into a blending truck when preparing prepad fluid and carrying fluid; 2) during the fracture fluid recovery process, performing continuous tracking, monitoring, sampling and measuring; 3) during a pumping overlayer production process, performing sampling at the mouth of a well or a measuring station, obtaining the amount of tracked pumped fluid during normal operation, wherein sampling includes different requirements on different wells; 4) respectively measuring the concentration of liquid indicator agent and the illumination intensity of every preprocessed sample through analyzing instruments to calculate out contribution rate, recovery rate, recovery amount and the like. According to the oil production well productivity tracking and evaluating method, by means of classification, analysis, processing and study of the liquid indicator agent, relevant information such as production liquid component status, productivity (contribution rate), fracture effects and the like.

The invention discloses a vehicle operation monitoring, parameter measuring and calculating, overload monitoring method and system. The vehicle operation monitoring, parameter measuring and calculating, overload monitoring method is a monitoring method when a vehicle is controlled to operate by using a power device; and the power device is a motor. The vehicle operation monitoring, parameter measuring and calculating, overload monitoring method is characterized by comprising the following steps of obtaining a combined calculation value of measuring and calculating objects of the vehicle; judging whether the power transmission status of the vehicle is abnormal or not according to the obtained combined calculation value and a reference value of the measuring and calculating objects, wherein the measuring and calculating object is any one or more of vehicle mass, a source power parameter and a system operation parameter of the vehicle; and the combined calculation value is figured out with vehicle motion balance as principle; and the source power parameters comprise any one or both of a motor driving parameter and rear-end electric power parameter; and if the judging result is that the power transmission status of the vehicle is abnormal, starting a set power transmission abnormality processing mechanism.

The invention discloses a distributed optical fiber fence intrusion detection and location method based on a phi-OTDR (Optical Time Domain Reflectometer), and the method comprises the following steps of: firstly, subtracting an acquired ith signal by an acquired (i-1)th signal to obtain a preprocessing monitoring signal; secondly, carrying out at least four-layer wavelet decomposition on the preprocessing monitoring signal by adopting a plurality of wavelet functions; thirdly, judging whether actual intrusion exists according to the consistency of distribution positions of maximum-wavelet mode maximums in all scale signals; fourthly, judging that the actual intrusion exists if the distribution positions of the maximum-wavelet mode maximums in at least three scale signals are consistent; fifthly, corresponding multiplying the scale signals in which the intrusion exists and the distribution positions of the maximum-wavelet mode maximums are consistent to obtain a composite signal of which pseudo maximums are inhibited and mode maximums at a catastrophe point are enhanced, using a position corresponding to the maximum-mode maximum in the composite signal as a position of the determined intrusion point, determining the intrusion generation and the intrusion position by combining various composite signal judgment results of wavelet multi-scale analysis according to the majority voting criterion.

The invention discloses an optical signal to noise ratio (OSNR) monitoring device and monitoring method, comprising an optical amplifier (1), a first polarization control element (2), a circulator (3), a coupler (4), a nonlinear optical element (5), an attenuator (6), a second polarization control element (7), a first power meter (8) and a second power meter (9). The invention further discloses an OSNR monitoring method using the device, comprising the following steps: optimizing the polarization control elements to obtain working conditions of the linear area of the device; describing the power transmittance ratio of a transmission end to a reflection end of the monitoring device; fitting the relation between an OSNR and an output power by using a least square method; and back-calculating the OSNR by the output power according to the relation. The device and method disclosed by the invention are suitable for high-speed optical communication system. The device and method are compared with the prior scheme, the flexibility and monitoring range are improved obviously.

The invention discloses a manufacturing technology of a glass fiber/epoxy resin composite material substrate type fiber bragg grating sensor. The manufacturing technology comprises the steps that glass fiber/epoxy resin prepreg is procured to prepare a glass fiber/epoxy resin composite material substrate; a fiber bragg grating is fixed to the glass fiber/epoxy resin composite material substrate; the glass fiber/epoxy resin composite material substrate fixed with the fiber bragg grating is covered with a dry-state glass fiber cloth, vacuum aided filling of liquid epoxy resin is performed, and secondary curing molding is performed. The manufacturing technology adopts the secondary curing molding in the packaging process, the interlayer interface strength is remarkably improved, accordingly the testing precision and stability of the fiber bragg grating sensor are improved, batch production of the fiber bragg grating sensor can be achieved, and the manufacturing technology has wide market prospect and huge economic benefit.

The invention discloses a method and system for vehicle operation monitoring, parameter measurement and calculation and overload monitoring. A monitoring method used when a vehicle is controlled by a power device to run is characterized by comprising the following steps of obtaining the joint operation values of a measurement and calculation object of the vehicle; judging whether the power transmitting condition of the vehicle is abnormal or not according to the obtained joint operation values and reference values of the measurement and calculation object, wherein the measurement and calculation object is any parameter selected from the vehicle mass of the vehicle, a source dynamic parameter and a system running parameter, and the joint operation values are obtained through calculation by using vehicle motion balance as a principle; and if the judging result is that the power transmitting condition of the vehicle is abnormal, starting a set power transmitting exception handling mechanism.

The invention discloses a click chemistry-based tumor marker probe, a preparation method and application. The tumor marker probe comprising a click reaction module with a tumor-specific factor and a click reaction module with a fluorescent marker is designed using reaction characteristics of click chemistry, such as high selectivity, high efficiency and high speed, and the two click reaction modules may be combined quickly through click reaction. The tumor marker probe is efficient in quickly combining to tumor tissues or cells, the life of the probe in viable tumor tissues and its detection time are effectively prolonged, the problem that an existing probe has poor specificity is effectively solved, and a new direction is provided for the in-vivo optical molecular imaging and live cell imaging of tumors as well as further targeted diagnosis and biological study of tumors.

A space-borne ionospheric scintillation monitoring device utilizing GPS signal phase changes, including navigation and positioning channels, ionospheric monitoring channels, navigation and positioning data processors, ionospheric monitoring data processors and high-stable crystal oscillators, positioning receiving antennas and ionospheric Antennas for satellite positioning and ionospheric scintillation monitoring, data processing of navigation signals received by GPS satellite navigation receivers to obtain ionospheric scintillation detection parameters, obtain ionospheric distribution, and improve ionospheric scintillation and disturbance detection levels. The device can make full use of the global coverage and continuous uninterrupted characteristics of GPS satellite navigation signals to improve the monitoring ability of the atmospheric ionosphere. Atmospheric ionospheric scintillation monitoring real-time and global coverage.

An angular-displacement underwater settlement gauge comprises a piston-type displacement transmission device; a lower casing pipe and an upper casing pipe are disposed on the piston-type displacement transmission device; an extension rod is connected with the lower part of the piston-type displacement transmission device; the lower end of the extension rod is an anchoring point; a measuring box is connected with above the piston-type displacement transmission device; a settlement amount electric measurement device and an A/D switch device are disposed in the measuring box; a steel pipe is connected with the upper end of the measuring box; a settlement broad is connected with the top end of the steel pipe; a transmission belt is disposed in the piston-type displacement transmission device; the settlement amount electric measurement device is connected with the upper end of the transmission belt; the settlement amount electric measurement device is connected with the A/D switch device; the A/D switch device is connected with a monitoring instrument through cables, wherein the monitoring instrument is disposed above far away from the settlement gauge. The settlement gauge has a simple structure, and can convert linear displacement into angular displacement to improve measurement precision and accuracy. The angular-displacement underwater settlement gauge has wide application scope, high monitoring precision and sensitivity, strong interference immunity for transmission signals, and high stability, can realize real-time visual display of the settlement values, and is simple in installation, and low in cost.

the invention provides a railway safety monitoring system and monitoring method. The system comprises one and more phase-sensitive optical time-domain reflectometers arranged along a railway, corresponding data processing units, coaxial cables, a first network photoelectric transceiver, a communication optical cable along the railway, a second network photoelectric transceiver, and a server. According to the system and method, the railway safety is monitored by employing the conventional communication optical cable, the cost is low, passive distributed detection is realized, electromagnetic interference resistance is achieved, the development of the field of the railway optical cable safety monitoring system is greatly promoted, and good guarantee is provided for monitoring of railway train operation, infrastructure safety, and illegal authorization construction.

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.

The invention relates to a monitoring method for a vehicle and a vehicle so that a problem that the state of operating the steering wheel by the hands of the driver can not be determined accurately based on the existing monitoring scheme can be solved. The monitoring method comprises: acquiring a real-time torque value of a steering wheel of a vehicle; acquiring a real-time angular velocity valueof the steering wheel of the vehicle; and determining a driver confidence level of the vehicle based on the real-time torque value and the real-time angular velocity value and thus determining whetherthe drive is in a hand-off driving state based on the driver confidence level. According to the invention, the driver confidence level can be determined comprehensively based on the real-time torquevalue and the real-time angular velocity value; and thus the acting force on the steering wheel by the drive is used as a determination base and the angular velocity parameter capable of reflecting the rotating state of the steering wheel is also combined for determination. Therefore, whether the drive is in a hand-off driving state is determined accurately; and the effectiveness of monitoring isimproved and the error rate of monitoring is reduced.

The invention discloses a method for detecting etching insufficiency of through holes. The method comprises the steps that a plurality of test modules are built on a semiconductor substrate, each test module simulates an SRAM device structure and comprises two simulation transmission gate transistors, two simulation pull-up transistors and two simulation pull-down transistors, the simulation transmission gate transistors, the simulation pull-up transistors and the simulation pull-down transistors are PMOS devices in an N well, and no grid electrode is formed on active areas of the simulation transmission gate transistors; a plurality of contacting holes are formed in each test module and filled with metal, and the contacting holes are at least connected with positions, corresponding to grid electrodes, in the active areas of the simulation transmission gate transistors; a metal interconnection line and a conduction through hole are formed on each contacting hole; the test modules are scanned through an electron beam defect scanner under a positive potential condition, and the etching insufficiency defects of the through holes of the test modules are detected according to the image feature pictures obtained through scanning. The method for detecting etching insufficiency of the through holes can effectively improve the capturing efficiency of the etching insufficiency defects.

The invention discloses an oil trace moisture on-line monitoring sensor. The oil trace moisture on-line monitoring sensor comprises a high polymer thin-film capacitor, a temperature sensor, a signal processing circuit board and a mechanical seal structure, wherein the high polymer thin-film capacitor and the temperature sensor are used for measuring the content and the temperature of oil trace moisture respectively, the signal processing circuit board is used for detecting and processing output signals of the high polymer thin-film capacitor and the temperature sensor and converting the output signals into content and temperature values of oil moisture, and the mechanical seal structure comprises a protection sleeve, a mechanical shell, a gold-plating wire, a connector member, a fixation screw, an end cover and the like and is used for supporting and protecting an inside structure and preventing pollution caused by entry of oil. According to the oil trace moisture on-line monitoring sensor, the purpose of real-timely monitoring aviation oil moisture is achieved, and the oil trace moisture on-line monitoring sensor has the advantages of being small in size, light, simple in operation, and the like.

The embodiment of the invention provides a method and a device for monitoring polarization mode dispersion, an electronic device and a storage medium, applied to a receiving terminal of an optical fiber communication system. The method comprises the steps of generating pumping signal light with narrow bandwidth and low power consumption and auxiliary signal light based on the frequency of target signal light when the receiving terminal of the optical fiber communication device receives the target signal light; then coupling the pumping signal light and the auxiliary signal light to obtain detecting signal light; generating idle frequency signal light by utilizing the target signal light and the detecting signal light; and calculating a target power differential value between the power of the target signal light and the power of the idle frequency signal light so as to obtain a polarization mode dispersion value of the wireless optical fiber communication system. Through the scheme, the utilization rate and practicability of the optical fiber communication system are not only improved, but also the monitoring sensitivity and precision of the polarization mode dispersion are improved under the precondition of monitoring the polarization mode dispersion efficiently.

The invention discloses a drainage liquid rapid monitoring system special for thyroid and mammary gland surgical postoperation.By using a gas pressure sensor, the monitoring flexibility is high, the size is small, installation and debugging are convenient, and liquid in a drainage ball can be monitored in real time; operation is simple, and gas pressure monitoring of the negative drainage ball can be completed without changing an existing negative pressure drainage ball structure; intelligent monitoring of the drainage technology is achieved, the drainage situation can be monitored in real time, the current drainage amount in the drainage ball is calculated, nurses are helped to efficiently complete the work such as observation and measurement of drainage liquid, and the nursing workloads are greatly reduced; calculation is conducted for abnormal drainage of drainage liquid and falling, bending or blocking of a drainage pipe, effective and continuous monitoring is achieved, real-time alarming and reminding are achieved, it is ensured that medical workers find drainage liquid abnormity of patients in time, intervene processing is conducted as soon as possible, and at the current stage at which the nursing manpower resource is tight, the system can effectively assist medical workers in working, improve the medical care quality and achieve the aim of postoperative safety of patients.

The invention relates to a tool status online monitoring method and management system. The monitoring method comprises a damage monitoring method and a wear monitoring method, wherein the damage monitoring method mainly aims at monitoring tool damage conditions, and an improved multi-characteristic time series dynamic matching algorithm is adopted for monitoring; the wear monitoring method mainlyaims at monitoring tool wear conditions, an improved Laser-cyclic neural network model is adopted for monitoring; and the management system comprises a basic information module, a tool acquisition module, a tool purchase module, a tool use module, a tool return module, a tool monitoring and warning module, a tool figuring module, a laser signal processing module and a sensor signal processing module. The monitoring method and management system can effectively solve the problems of the lack of real-time capability, precision and comprehensiveness of traditional tool status monitoring, and effectively improve production efficiency and product quality of the manufacturing industry.